CN108824382B - Overhauling method and device for tail water cooler - Google Patents
Overhauling method and device for tail water cooler Download PDFInfo
- Publication number
- CN108824382B CN108824382B CN201810587128.0A CN201810587128A CN108824382B CN 108824382 B CN108824382 B CN 108824382B CN 201810587128 A CN201810587128 A CN 201810587128A CN 108824382 B CN108824382 B CN 108824382B
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- Prior art keywords
- water
- cooler
- retaining wall
- tail water
- tail
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 186
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000012423 maintenance Methods 0.000 claims abstract description 23
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000010248 power generation Methods 0.000 claims abstract description 4
- 210000000481 breast Anatomy 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/06—Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/54—Sealings for gates
-
- 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)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Barrages (AREA)
Abstract
The invention discloses a maintenance method and device for a tail water cooler. The tail water cooler is positioned on the top surface of the upper platform, and the method is that a water blocking wall is built at the edge of the top surface of the upper platform, and the top of the water blocking wall is slightly higher than the normal tail water level or the elevation of the power generation water level of a unit; a steel pipe communicated with the gate slot hole is arranged in the water retaining wall, valves are arranged on the steel pipe, when the tail water cooler needs to be overhauled, all the valves are closed, and the water body on one side of the water retaining wall close to the tail water cooler is discharged through a temporary water pump; then overhauling the tail water cooler; after the overhauling is finished and the overhauling personnel withdraw from the upper platform, horizontal pressure is filled on one side of the tail water cooler of the water retaining wall through a temporary water pump, and all valves are opened, so that water areas on two sides of the water retaining wall are communicated to realize cooling of the tail water cooler; according to the method, the tail water cooler is not required to be lifted off the upper platform in the overhaul process, underwater operation is not required, overhaul and maintenance are very convenient, overhaul efficiency can be improved, and personal safety of overhaul personnel is ensured.
Description
Technical Field
The invention relates to a maintenance method and device for a tail water cooler, and belongs to the technical field of metal structures of hydraulic and hydroelectric engineering.
Background
For hydroelectric engineering with large sediment content and large impurity content, a circulating cooling water supply mode is generally adopted for a tail water cooler, the tail water cooler is arranged on a breast wall upper platform at the side of a tail water outlet overhaul gate unit, the cooling effect is not influenced, the whole tail water cooler is arranged at the lower part of a normal tail water level, and a diver is adopted in the prior art to install and remove the tail water cooler; the specific method comprises the following steps: when overhauling, adopt diver to dive the installation support department of cooler, hang out the tailwater cooler after demolishing connecting bolt and overhaul, finish the maintenance, put into the tailwater cooler, send diver to dive the installation support department of cooler again and connect fixedly, this has and please diver very troublesome at every turn when overhauling, then inconvenient to remote place, the tailwater cooler counterpoint under water is installed and demolishd the degree of accuracy poor, the underwater operation degree of difficulty is great and the danger is higher, therefore, the prior art still has not enough, remains to be further perfect.
Disclosure of Invention
The invention aims to provide a maintenance method and device for a tail water cooler, which are free from hanging the tail water cooler out of a platform and underwater operation of divers when the tail water cooler is maintained, so that the maintenance is very convenient, the maintenance efficiency can be improved, and the personal safety of maintenance staff is ensured, thereby overcoming the defects in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The invention relates to a maintenance method of a tail water cooler, wherein the tail water cooler is positioned on the top surface of an upper platform; the gate slot hole is separated from the tail water cooler through a water retaining wall; a group of operation chambers are arranged on one side of the water retaining wall close to the tail water cooler, steel pipes communicated with gate slots are arranged in each operation chamber, a valve is arranged on each steel pipe, a vertical hole is formed in the top of each operation chamber corresponding to the valve, an operation rod is arranged in each vertical hole, the lower end of each operation rod is connected with the corresponding valve, the upper end of each operation rod penetrates out of the top of the water retaining wall, and an operation handle is arranged at the upper end of each operation rod; when the tail water cooler needs to be overhauled, all valves are closed through an operating rod, and then the water body on one side of the water retaining wall close to the tail water cooler is discharged through a temporary water pump; then, overhauling the tail water cooler by overhauling personnel through a temporary crawling ladder to the upper platform on which the tail water cooler is arranged; after the overhauling is finished and an overhauling person withdraws from the upper platform, horizontal pressure is filled on one side of the tail water cooler of the water retaining wall through a temporary water pump, and then all valves are opened through an operating rod, so that water areas on two sides of the water retaining wall are communicated to realize cooling of the tail water cooler; according to the method, the tail water cooler is not required to be lifted off the upper platform in the overhaul process, underwater operation is not required, overhaul and maintenance are very convenient, overhaul efficiency can be improved, and personal safety of overhaul personnel is ensured.
In the overhauling method of the tail water cooler, the group of operation chambers are arranged from top to bottom according to isosceles triangles so as to adapt to the characteristics of large load of the lower water retaining wall and small load of the upper water retaining wall.
In the overhauling method of the tail water cooler, the outlet of the tail water side of the steel pipe adopts arc transition so as to optimize the hydraulic condition and reduce cavitation damage to the water retaining wall caused by the back and forth flow of water flow in the steel pipe.
The invention relates to a maintenance device for a tail water cooler, which is formed by the maintenance method for the tail water cooler, and comprises a water retaining wall positioned at the top of a side breast wall of a gate slot close to a unit; the water retaining wall is arranged on the top surface of the upper platform and is close to the edge of the gate slot hole; the water retaining wall leans on tail water cooler one side to be equipped with the control chamber that a set of layer set up, all is equipped with the steel pipe that communicates the gate slotted hole in every control chamber, installs the valve on the steel pipe, and the control chamber top that the valve corresponds is equipped with the vertical hole, is equipped with the action bars in the vertical hole, and the action bars lower extreme is connected with the valve, and the action bars upper end is worn out from the water retaining wall top, and operating handle is installed to the action bars upper end.
In the maintenance device for the tail water cooler, the top of the water retaining wall is slightly higher than the normal tail water level or the elevation of the generating water level of a unit.
In the tail water cooler maintenance device, the operation chambers which are arranged in a layered manner are arranged from top to bottom according to an isosceles triangle.
In the tail water cooler maintenance device, the outlet of the tail water side of the steel pipe is in a horn mouth shape with arc transition.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) The water retaining wall method that the valve is arranged on the upper platform of the breast wall at the side of the machine set is adopted for overhauling the tail water cooler, when the tail water cooler overhauls, the temporary water pump is adopted to remove the water at the side of the water retaining breast wall machine set after the valve is closed, overhauling staff can realize overhauling by descending to the overhauling platform at the side of the tail water cooler through the temporary ladder, after the overhauling is finished, the temporary water pump fills water to the side of the water retaining breast wall machine set and opens the valve after the water is pressed horizontally, so that the water retaining wall machine set side and the water area at the side of the tail water are communicated to realize cooling operation of the tail water cooler, underwater operation of a diver is not required, overhauling is not required to be carried out from the upper platform, overhauling maintenance is very convenient, and overhauling efficiency and personal safety of overhauling staff are greatly improved.
(2) The valves are arranged on the side of the water-retaining wall unit from top to bottom in an isosceles triangle, the distance between the valves is small, the load of the water-retaining wall at the lower part is large, the distance between the valves is far, the bending moment at the section of the operation room where the water-retaining wall is reduced is small, the thickness of the water-retaining wall is increased less, and the investment is saved.
(3) The retaining wall sets up the vertical hole, and the vertical hole is used for placing the action bars of valve, and the handle of action bars is located the retaining wall top above, the valve of being convenient for operate.
(4) An operation chamber is arranged on the water blocking wall at the valve, so that the valve is convenient to install.
(5) The top of the water retaining breast wall slightly exceeds the normal tail water level or the power generation water level of a unit, so that the fluctuation of the downstream tail water during maintenance is effectively prevented from rushing into the side of the tail water cooler, and the maintenance safety is ensured.
(6) The circular arc transition of the outlet at the tail water side of the steel pipe has good hydraulic conditions, and reduces cavitation damage to the water retaining wall caused by the back and forth flow of water flow from the steel pipe.
Drawings
FIG. 1 is a schematic diagram of the process of the present invention;
FIG. 2 is an enlarged view of a portion of the steel pipe of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 1;
fig. 4 is a B-B cross-sectional view of fig. 1.
Reference numerals illustrate: 1-upper platform, 2-retaining wall, 3-isosceles triangle, 4-valve, 5-steel pipe, 6-operating room, 7-tail water cooler, 8-vertical hole, 9-action bars, 10-handle, 11-arc transition, 12-gate slotted hole, 13-breast wall.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
According to the overhaul method of the tail water cooler, as shown in fig. 1, the tail water cooler 7 is positioned on the top surface of the upper platform 1, and a water blocking wall 2 is built at the edge of the top surface of the upper platform 1, and the top of the water blocking wall 2 is slightly higher than the elevation of a normal tail water level; the gate slot 12 is separated from the tail water cooler 7 by a water retaining wall 2; a group of operation chambers 6 are arranged on one side of the water retaining wall 2 close to the tail water cooler 7. As shown in fig. 1 and 2, a steel pipe 5 communicated with a gate slot 12 is arranged in each operation chamber 6, a valve 4 is arranged on the steel pipe 5, a vertical hole 8 is arranged at the top of the operation chamber 6 corresponding to the valve 4, an operation rod 9 is arranged in the vertical hole 8, the lower end of the operation rod 9 is connected with the valve 4, the upper end of the operation rod 9 penetrates out from the top of the water-retaining wall 2, and an operation handle 10 is arranged at the upper end of the operation rod 9. When the tail water cooler 7 needs to be overhauled, all valves 4 are closed through an operating rod 9, and then the water body on one side of the water retaining wall 2 close to the tail water cooler 7 is discharged through a temporary water pump; then, overhauling the tail water cooler 7 by an overhauling staff through a temporary ladder to the upper platform 1 provided with the tail water cooler 7; after the overhauling is finished and an overhauling person withdraws from the upper platform 1, one side of the tail water cooler 7 of the water retaining wall 2 is filled with horizontal pressure through a temporary water pump, and then all valves 4 are opened through an operating rod 9, so that water areas on two sides of the water retaining wall 2 are communicated to cool the tail water cooler 7; according to the method, the tail water cooler 7 does not need to be lifted off the upper platform 1 in the overhaul process, underwater operation is not needed, overhaul and maintenance are very convenient, overhaul efficiency can be improved, and personal safety of overhaul personnel is ensured. As shown in fig. 4, a group of operation chambers 6 are arranged from top to bottom according to isosceles triangles 3 to adapt to the characteristics of large load of the lower water-retaining wall and small load of the upper water-retaining wall. As shown in fig. 2, the outlet of the tail water side of the steel pipe 5 adopts an arc transition 11 to optimize the hydraulic condition and reduce the cavitation damage to the water-retaining wall 2 caused by the back and forth flow of water flow in the steel pipe 5.
The maintenance device for the tail water cooler, which is formed by the maintenance method for the tail water cooler, comprises a water retaining wall 2 positioned at the top of a gate slot hole 12 close to a side breast wall 13 of a unit as shown in fig. 1 and 2; the water retaining wall 2 is arranged on the top surface of the upper platform 1 and is close to the edge of the gate slot hole 12; the water retaining wall 2 is equipped with the control room 6 that a set of layer set up by tail water cooler 7 one side, all is equipped with the steel pipe 5 of intercommunication gate slotted hole 12 in every control room 6, installs valve 4 on the steel pipe 5, and the control room 6 top that valve 4 corresponds is equipped with vertical hole 8, is equipped with action bars 9 in the vertical hole 8, and action bars 9 lower extreme is connected with valve 4, and action bars 9 upper end wears out from water retaining wall 2 top, and operating handle 10 is installed to action bars 9 upper end. The top of the water retaining wall 2 is slightly higher than the elevation of the normal tail water level. A group of operating chambers 6 arranged in layers are arranged in an isosceles triangle 3 from top to bottom. The outlet of the tail water side of the steel pipe 5 is in a horn mouth shape of an arc transition 11.
Examples
In the overhaul method of the tail water cooler, as shown in fig. 1-4, a water retaining wall 2 is arranged on an upper platform 1 of a breast wall at the side of a unit, a valve 4 which is arranged in an isosceles triangle 3 is arranged at the side of the water retaining wall 2 from top to bottom, the valve 4 is communicated with the side of the tail water through a steel pipe 5, the steel pipe 5 is fixed on the water retaining wall 2, and the valve 4 is arranged in an operation room 6. The tail water cooler 7 is arranged on the upper platform 1 on the top surface of the breast wall 13 on the side of the unit; the top of the water retaining wall 2 slightly exceeds the normal tail water level, and a vertical hole 8 is arranged in the water retaining wall 2; the vertical hole 8 is used for placing an operating rod 9 connected with the valve 4; the handle 10 of the operating rod 9 is positioned above the top of the water-retaining wall 2; as shown in fig. 2, the outlet of the tail water side of the steel pipe 5 is in arc transition 11.
Claims (7)
1. A maintenance method of a tail water cooler is characterized in that: the tail water cooler is positioned on the top surface of the upper platform (1), and the method is to build a water blocking wall (2) at the edge of the top surface of the upper platform (1), wherein the top of the water blocking wall (2) is slightly higher than the normal tail water level or the elevation of the power generation water level of a unit; the gate slot hole (12) is separated from the tail water cooler (7) through the water retaining wall (2); a group of operation chambers (6) are arranged on one side of the water retaining wall (2) close to the tail water cooler (7), steel pipes (5) communicated with gate slots (12) are arranged in each operation chamber (6), valves (4) are arranged on the steel pipes (5), vertical holes (8) are formed in the tops of the operation chambers (6) corresponding to the valves (4), operation rods (9) are arranged in the vertical holes (8), the lower ends of the operation rods (9) are connected with the valves (4), the upper ends of the operation rods (9) penetrate out of the tops of the water retaining wall (2), and operation handles (10) are arranged at the upper ends of the operation rods (9); when the tail water cooler (7) needs to be overhauled, all valves (4) are closed through an operating rod (9), and then the water body on the side, close to the tail water cooler (7), of the water retaining wall (2) is discharged through a temporary water pump; then, overhauling the tail water cooler (7) by overhauling personnel through a temporary ladder to the upper platform (1) provided with the tail water cooler (7); after the overhauling is finished and an overhauling person withdraws from the upper platform (1), one side of the tail water cooler of the water retaining wall (2) is horizontally pressurized by a temporary water pump, and then all valves (4) are opened by an operating rod (9), so that water areas at two sides of the water retaining wall (2) are communicated to realize cooling of the tail water cooler (7); according to the method, the tail water cooler (7) is not required to be lifted off the upper platform (1) in the overhaul process, underwater operation is not required, overhaul and maintenance are very convenient, overhaul efficiency can be improved, and personal safety of overhaul personnel is ensured.
2. The method of servicing a tailwater cooler of claim 1, wherein: the group of operation chambers (6) are arranged from top to bottom according to isosceles triangles (3) so as to adapt to the characteristics that the load of the lower water retaining wall (2) is large and the load of the upper water retaining wall (2) is small.
3. The method of servicing a tailwater cooler of claim 1, wherein: the tail water side outlet of the steel pipe (5) adopts an arc transition (11) to optimize the hydraulic condition and reduce cavitation damage to the water retaining wall (2) caused by the back and forth flow of water flow in the steel pipe (5).
4. A tail water cooler overhaul device formed by the overhaul method of the tail water cooler according to any one of claims 1 to 3, comprising a water retaining wall (2) positioned at the top of a gate slot hole (12) close to a side breast wall (13) of a unit; the method is characterized in that: the water retaining wall (2) is arranged on the top surface of the upper platform (1) and is close to the edge of the gate slot hole (12); the water retaining wall (2) is equipped with operation room (6) that a group of layer set up by tail water cooler (7) one side, all is equipped with steel pipe (5) of intercommunication gate slotted hole (12) in every operation room (6), installs valve (4) on steel pipe (5), and operation room (6) top that valve (4) corresponds is equipped with vertical hole (8), is equipped with action bars (9) in vertical hole (8), and action bars (9) lower extreme and valve (4) are connected, and action bars (9) upper end wears out from water retaining wall (2) top, and operating handle (10) are installed to action bars (9) upper end.
5. The tailwater cooler service apparatus according to claim 4, wherein: the top of the water retaining wall (2) is slightly higher than the elevation of the normal tail water level or the power generation water level of a unit.
6. The tailwater cooler service apparatus according to claim 4, wherein: the operation chambers (6) are arranged in a layering manner from top to bottom according to isosceles triangles (3).
7. The tailwater cooler service apparatus according to claim 4, wherein: the tail water side outlet of the steel pipe (5) is in a horn mouth shape of an arc transition (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587128.0A CN108824382B (en) | 2018-06-08 | 2018-06-08 | Overhauling method and device for tail water cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587128.0A CN108824382B (en) | 2018-06-08 | 2018-06-08 | Overhauling method and device for tail water cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108824382A CN108824382A (en) | 2018-11-16 |
| CN108824382B true CN108824382B (en) | 2024-05-14 |
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ID=64144540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810587128.0A Active CN108824382B (en) | 2018-06-08 | 2018-06-08 | Overhauling method and device for tail water cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108824382B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119141B (en) * | 2020-01-17 | 2024-09-24 | 中国电建集团贵阳勘测设计研究院有限公司 | Tail water hole outlet overhaul gate water filling and draining structure |
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| CN108824382A (en) | 2018-11-16 |
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