CN219863085U - Technical water supply system with sediment filtering and backwashing functions - Google Patents
Technical water supply system with sediment filtering and backwashing functions Download PDFInfo
- Publication number
- CN219863085U CN219863085U CN202321008615.XU CN202321008615U CN219863085U CN 219863085 U CN219863085 U CN 219863085U CN 202321008615 U CN202321008615 U CN 202321008615U CN 219863085 U CN219863085 U CN 219863085U
- Authority
- CN
- China
- Prior art keywords
- pipe
- water supply
- unit
- technical
- isolation valve
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 139
- 238000001914 filtration Methods 0.000 title claims abstract description 19
- 239000013049 sediment Substances 0.000 title claims abstract description 13
- 238000011001 backwashing Methods 0.000 title abstract description 3
- 238000002955 isolation Methods 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 11
- 239000004576 sand Substances 0.000 claims description 23
- 238000005516 engineering process Methods 0.000 claims description 14
- 238000011010 flushing procedure Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000008400 supply water Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model provides a technical water supply system with sediment filtering and backwashing functions, wherein a first connecting pipe is arranged between a technical water supply pump water inlet pipe and a unit technical water supply drain pipe, and a first isolation valve is arranged on the connecting pipe; a second connecting pipe is arranged between the unit cooling unit water inlet pipe and the unit technical water supply and intake pipe, and a second isolation valve is arranged on the connecting pipe; the technical water supply pump water inlet pipe is provided with a third isolation valve, the unit cooling unit water inlet pipe is provided with a fourth isolation valve, and the unit technical water supply drain pipe is provided with a fifth isolation valve. The utility model can backwash the water intake trash rack by opening and closing the isolation valve, can reduce the occupied area of the grit chamber and the filtering equipment, reduce engineering investment and improve the operation stability of the power station.
Description
Technical Field
The utility model relates to the field of unit technology water supply systems of hydropower stations, in particular to a technology water supply system with sediment filtering and back flushing functions.
Background
The hydropower station technical water supply system provides a reliable water source for unit cooling equipment, and the unit cooling equipment mainly comprises a generator thrust bearing, an upper guide bearing, a lower guide bearing, an air cooler, a water turbine water guide bearing and the like, and has certain requirements on water quantity, water pressure, water temperature and water quality. The abnormal operation state of the technical water supply system can directly lead to the abnormal operation of key equipment of the water turbine generator set, thereby influencing the power generation benefit of the hydropower station.
In order to prevent impurities from damaging cooling equipment of a unit, a sand setting tank and water filtering equipment are often arranged to filter cooling water. At present, the hydropower station generally adopts an underground factory building structure, and the grit chamber and the water filtering equipment are required to be arranged in the factory building, so that the occupied area is large, the size of the factory building is increased, and the engineering investment is increased. In addition, because the sediment content is larger, the water intake trash rack is easy to block.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a technical water supply system with sediment filtering and back flushing functions, which can reduce the occupied area of a grit chamber and filtering equipment, reduce engineering investment and improve the operation stability of a power station. For this purpose, the utility model adopts the following technical scheme:
a technical water supply system with sediment filtering and back flushing functions is characterized in that: the technical water supply system comprises a unit technical water supply water intake pipe, a sand settling pipe, a technical water supply pump water inlet pipe, a technical water supply pump, a unit cooling unit water inlet pipe, a unit cooling unit and a unit technical water supply drain pipe; wherein, a water intake of a water supply and intake pipe of the unit technology is provided with a trash rack;
a first connecting pipe is arranged between the technical water supply pump water inlet pipe and the unit technical water supply drain pipe, and a first isolation valve is arranged on the first connecting pipe;
a second coupling pipe is arranged between the unit cooling unit water inlet pipe and the unit technical water supply and intake pipe, and a second isolation valve is arranged on the second coupling pipe;
a third isolation valve is arranged on a water inlet pipe of the technical water supply pump, a fourth isolation valve is arranged on a water inlet pipe of the unit cooling unit, and a fifth isolation valve is arranged on a technical water supply drain pipe of the unit;
the first connecting pipe is positioned between a technical water supply pump water inlet pipe at the downstream of the third isolation valve and a unit technical water supply drain pipe at the downstream of the first isolation valve; the second connecting pipe is positioned between the unit cooling unit water inlet pipe and the unit technical water supply and intake pipe at the upstream of the fourth isolation valve.
Further, the sand settling pipe is a buried pipe, and the shape is similar to a reducing joint eccentric downwards. The length of the sand settling pipe is 5-8 times of the diameter of the large end of the sand settling pipe.
Further, a unit technology water supply and intake pipe is connected with the small end of the sand settling pipe, and a unit cooling unit water inlet pipe is connected with the upper part of the large end of the sand settling pipe.
Furthermore, the back flushing of the water intake trash rack can be performed through the opening and closing of the isolation valve.
Further, 2 dirt collecting pits are arranged below the inclined surface of the sand settling pipe, a drain pipe is arranged at the bottom of the dirt collecting pits, and a normally closed electric valve is arranged on the drain pipe, so that the drain can be opened to a drainage ditch at regular time.
The technical water supply system with sediment filtering and back flushing functions can back flush the water intake trash rack through the opening and closing of the isolation valve, so that the occupied area of the grit chamber and the filtering equipment can be reduced, the engineering investment is reduced, and the running stability of a power station is improved.
Drawings
Fig. 1 is a system diagram of the present utility model.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.
As shown in fig. 1, the present embodiment is a technical water supply system applied to a pumped-storage power station. The technical water supply system is sequentially provided with: the device comprises a unit technical water supply and intake pipe 2, a sand settling pipe 3, a technical water supply pump water inlet pipe 4, a technical water supply pump 11, a unit cooling unit water inlet pipe 9, a unit cooling unit 10 and a unit technical water supply and intake drain pipe 13, wherein a water intake of the unit technical water supply and intake pipe 2 is provided with a trash rack 1, a third isolation valve 6 is arranged on the technical water supply pump water inlet pipe 4, a fourth isolation valve 8 is arranged on the unit cooling unit water inlet pipe 9, and a fifth isolation valve 12 is arranged on the unit technical water supply and intake drain pipe 13;
a first connecting pipe 14 is arranged between the technical water supply pump water inlet pipe 4 and the unit technical water supply water outlet pipe 13, and a first isolation valve 15 is arranged on the first connecting pipe 14, wherein the first connecting pipe 14 is connected with the technical water supply pump water inlet pipe 4 at the downstream of the third isolation valve 6; the unit cooling unit water inlet pipe 9 is provided with a second connecting pipe 5 between the upstream of the fourth isolation valve 8 and the unit technical water supply water intake pipe 2, and a second isolation valve 7 is arranged on the second connecting pipe 5.
The water intake of the unit technology water supply and intake pipe 2 and the water outlet of the unit technology water supply and intake pipe 13 are arranged on a tail water steel liner, the tail water steel liner is buried in a tail water tunnel, and the water intake is positioned at the upstream of the water outlet.
The bottom of the dirt collecting pit of the sand settling pipe 3 is provided with a drain pipe 17, and the drain pipe is provided with a normally closed electric valve 16 which can be opened at regular time to drain to a drainage ditch. The sand settling pipe 3 is a buried pipe, can replace a sand settling tank and filtering equipment, is buried in concrete above the tail water steel pipe, and does not need to occupy the space inside a factory building. The sand setting tank and the filtering equipment need to be arranged inside the factory building and can not be buried, so that the floor area of the factory building can be greatly reduced by using the sand setting pipe.
When the unit technical water supply system normally supplies cooling water, the isolation valves 7 and 15 are closed, the isolation valves 6, 8 and 12 are opened, and the technical water supply pump 11 normally operates. The water flow direction in the system is as follows: the device comprises a trash rack 1, a unit technology water supply and intake pipe 2, a sand settling pipe 3, a technology water supply pump water inlet pipe 4, a technology water supply pump 11, a unit cooling unit water inlet pipe 9, a unit cooling unit 10 and a unit technology water supply and exhaust pipe 13.
When the unit carries out the back flushing of the trash rack, the isolation valves 6, 8 and 12 are closed, the isolation valves 7 and 15 are opened, and the technical water supply pump 11 operates normally. The water flow direction in the system is as follows: the unit technology water supply and drainage pipe 13, the connecting pipe 14, the technical water supply pump water inlet pipe 4, the technical water supply pump 11, the unit cooling unit water inlet pipe 9, the unit technology water supply and water intake pipe 2 and the trash rack 1.
The above description is only a preferred example of the present utility model and is not intended to limit the present utility model, and various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. A technical water supply system with sediment filtering and back flushing functions is characterized in that: the technical water supply system comprises a unit technical water supply water intake pipe, a sand settling pipe, a technical water supply pump water inlet pipe, a technical water supply pump, a unit cooling unit water inlet pipe, a unit cooling unit and a unit technical water supply drain pipe; wherein, a water intake of a water supply and intake pipe of the unit technology is provided with a trash rack;
a first connecting pipe is arranged between the technical water supply pump water inlet pipe and the unit technical water supply drain pipe, and a first isolation valve is arranged on the first connecting pipe;
a second coupling pipe is arranged between the unit cooling unit water inlet pipe and the unit technical water supply and intake pipe, and a second isolation valve is arranged on the second coupling pipe;
a third isolation valve is arranged on a water inlet pipe of the technical water supply pump, a fourth isolation valve is arranged on a water inlet pipe of the unit cooling unit, and a fifth isolation valve is arranged on a technical water supply drain pipe of the unit;
the first connecting pipe is positioned between a technical water supply pump water inlet pipe at the downstream of the third isolation valve and a unit technical water supply drain pipe at the downstream of the first isolation valve; the second connecting pipe is positioned between the unit cooling unit water inlet pipe and the unit technical water supply and intake pipe at the upstream of the fourth isolation valve.
2. A technical water supply system with sediment filtration and backwash functions according to claim 1, characterized in that: the sand settling pipe is a buried pipe, the shape of the sand settling pipe is similar to a reducing joint eccentric downwards, and the length of the sand settling pipe is 5-8 times of the diameter of the large end of the sand settling pipe.
3. A technical water supply system with sediment filtration and backwash functions according to claim 1, characterized in that: the water supply and water intake pipe of the unit technology is connected with the small end of the sand settling pipe, and the water inlet pipe of the unit cooling unit is connected with the upper part of the large end of the sand settling pipe.
4. A technical water supply system with sediment filtration and backwash functions according to claim 1, characterized in that: the back flushing of the water intake trash rack can be carried out through the opening and closing of the isolation valve.
5. A technical water supply system with sediment filtration and backwash functions according to claim 1, characterized in that: 2 dirt collecting pits are arranged below the inclined surface of the sand settling pipe, a drain pipe is arranged at the bottom of the dirt collecting pits, and a normally closed electric valve is arranged on the drain pipe, so that the drain can be opened to a drainage ditch at regular time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321008615.XU CN219863085U (en) | 2023-04-26 | 2023-04-26 | Technical water supply system with sediment filtering and backwashing functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321008615.XU CN219863085U (en) | 2023-04-26 | 2023-04-26 | Technical water supply system with sediment filtering and backwashing functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219863085U true CN219863085U (en) | 2023-10-20 |
Family
ID=88331837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321008615.XU Active CN219863085U (en) | 2023-04-26 | 2023-04-26 | Technical water supply system with sediment filtering and backwashing functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219863085U (en) |
-
2023
- 2023-04-26 CN CN202321008615.XU patent/CN219863085U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219863085U (en) | Technical water supply system with sediment filtering and backwashing functions | |
| CN202290668U (en) | High-flow flushing device | |
| CN208870163U (en) | A kind of novel Inlet and outlet water mode rainfall pumping station | |
| CN206951717U (en) | A kind of drain cleaner | |
| CN215857454U (en) | Water flushing system sweeps water trap | |
| CN215352309U (en) | Horizontal backwashing device for water delivery pipeline exhaust valve | |
| CN211685016U (en) | Foundation pit underground water utilization system | |
| CN109208693B (en) | Water taking and draining device for high-dam reservoir engineering | |
| CN205276881U (en) | Cooling system of cooling water flow direction adjustable cooling device and bulky concrete | |
| CN205314233U (en) | Multi -functional sump pit structure in power station | |
| CN209828354U (en) | Sludge discharge pipeline dredging mechanism of sedimentation tank siphon system | |
| CN208395947U (en) | A kind of draining of unit maintenance and seepage from powerhouse drainage system | |
| CN110923382A (en) | Flushing method for blast furnace pure water closed circulating water system | |
| CN214497692U (en) | Silt-proof device for water storage type pump station | |
| CN217300890U (en) | External circulating water filtering and purifying device for coal mine ground gas drainage pump station | |
| CN217107533U (en) | Water system for lubricating axial flow pump | |
| CN219863072U (en) | Comprehensive technology water supply and drainage system | |
| CN220978194U (en) | Bank side type sediment flushing device for water inlet pipe of multi-water-level combined water taking pump house | |
| CN210829629U (en) | Pressure relief and water drainage device for manifold of diesel water pump unit | |
| CN216501093U (en) | A deslagging system for jiaheng method box | |
| CN218895139U (en) | Automatic discharge pipe for pressurized pipeline | |
| CN217567588U (en) | Safe piping structure of circulating water bypass filter of air cooling tower in air separation engineering | |
| CN214389023U (en) | Filter system for forced backwashing water of reservoir | |
| CN216472528U (en) | Gravity type pressure flow sewage delivery system | |
| CN210769115U (en) | Water supply system of cooling water pump of hydropower station unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |