CN201473984U - Automatic desilting system of leakage water-collecting well of hydropower station - Google Patents
Automatic desilting system of leakage water-collecting well of hydropower station Download PDFInfo
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- CN201473984U CN201473984U CN2009201558486U CN200920155848U CN201473984U CN 201473984 U CN201473984 U CN 201473984U CN 2009201558486 U CN2009201558486 U CN 2009201558486U CN 200920155848 U CN200920155848 U CN 200920155848U CN 201473984 U CN201473984 U CN 201473984U
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Abstract
The utility model discloses an automatic desilting system of a leakage water-collecting well of a hydropower station, comprising a water-discharging pump (1) as well as a sand-discharging pipeline (2) communicating the water-discharging pump (1) to tail water of a power station unit, a low-pressure air-blowing pipeline (4) provided with an electromagnetic valve (3), a water level detector and a PLC automatic control system which is connected with the water-discharging pump, the water level detector, the sand-discharging pipeline (2) and the electromagnetic valve (3); a sand-absorbing port (5) of the sand-discharging pipeline (2) is positioned at the center of the well bottom; the low-pressure air-blowing pipeline (4) encloses into a circle along the periphery of the well bottom; two ports are connected out, combined and communicated with a power station low-pressure air system; and the lower part of the pipe wall of the low-pressure air-blowing pipeline (4), embedded at the well bottom, is provided with a hole communicating the inside with the outside of the pipe. The automatic desilting system can automatically control the removal of sand accumulated in the water-collecting well, and not have influence on the environment of a factory.
Description
Technical field
The utility model relates to a kind of Hydroelectric Power Station collecting well automatic desilting system.
Background technology
The seepage collecting well is mainly collected from water-turbine top cover draining and factory building seepage draining everywhere in the power station.In many rivers, because the destruction of upstream, river basins vegetation, annual flood season in May to October, the river contained sand seriously, and was ascendant trend year by year.Unit flow passage components wearing and tearing aggravation, the seal ring gap enlarges rapidly on the runner, and the top cover upper cavity pressure significantly rises, and causes water seal wearing and tearing and water leakage significantly to increase.Flood tide comes water to bring impurity such as a large amount of quartz sands and diamond dust, and these silts deposit rapidly in collecting well on the one hand, stops up the drainage pump intake, has a strong impact on the normal operation of water pump.On the other hand, silt is evacuated to downstream tail water by drainage pump, when loseing through water pump vane, bearing and sealing etc., because quartz sand and diamond dust extreme hardness cause water pump operation to occur problems such as seal failure, pump shaft is levigate in a short time.For desilting, all have to organize regularly a large amount of manpowers that collecting well is carried out desilting annual flood season.In order to reduce water level in the well, drainage pump adopts the manual mode start and stop, and is careless slightly, just may cause the drainage pump idle running damage and burn motor during desilting.Simultaneously, artificial desilting workload is big, length consuming time, and the workman suffers untold misery.In addition, silt must pollute power house environment outside pump house is transported to factory.
The utility model content
At the problem that above-mentioned prior art exists, the utility model provides a kind of Hydroelectric Power Station collecting well automatic desilting system, can control automatically the silt that gathers in the collecting well is got rid of, and not influence power house environment.
The technical solution of the utility model is: a kind of Hydroelectric Power Station collecting well automatic desilting system, comprise drainage pump, also comprise sand discharging pump, be communicated with the row sand tube road of sand discharging pump to power station unit tail water, be provided with the low pressure gas scavenging pipeline of electromagnetic valve, level switch, and and drainage pump, level switch, the PLC automatic control system that sand discharging pump is connected with electromagnetic valve, the husky mouth of the suction of sand discharging pump is positioned at the center, shaft bottom, the low pressure gas scavenging pipeline forms a circle all around along the shaft bottom, converge after two-port picks out and with power station low pressure gas system connectivity, and the hole inside and outside the tube wall bottom that the low pressure gas scavenging pipeline is embedded in bottom section has communicating pipe.
As preferably, described low pressure gas scavenging pipeline is the DN20mm stainless-steel pipe.
As preferably, described low pressure gas scavenging pipeline is offered the hole of three Φ 4 every 200mm.
As preferably, described row's sand tube road is the DN100mm seamless steel pipe.
The beneficial effects of the utility model are: utilize the ready-made 0.7MPa low pressure gas system in power station by in the low pressure gas scavenging pipeline access set well, air-flow sprays from the hole of pipeline bottom, shaft bottom silt is purged stirring, silt is mixed with water as far as possible, be convenient to the fully husky effect of the row of realization of sand discharging pump; Sand discharging pump is expelled to power station unit tail water by row's sand tube road with silt.Utilize the PLC automatic control system that generally adopts at present to control the start and stop of the low pressure gas scavenging pipeline of sand discharging pump and solenoid control automatically at last, to realize whole desilting is arranged the automatic control of husky system according to the water level situation of the startup situation of drainage pump and collecting well.
Description of drawings
Fig. 1 is the system layout schematic diagram of the utility model embodiment.
The specific embodiment
As a kind of embodiment of the present utility model, as shown in Figure 1, a kind of Hydroelectric Power Station collecting well automatic desilting system, comprise drainage pump, also comprise sand discharging pump 1, be communicated with the row sand tube road 2 of sand discharging pump 1 to power station unit tail water, be provided with the low pressure gas scavenging pipeline 4 of electromagnetic valve 3, level switch, and and drainage pump, level switch, the PLC automatic control system that sand discharging pump 1 is connected with electromagnetic valve 3, the suction of sand discharging pump 1 is positioned at the center, shaft bottom for husky mouthful 5, low pressure gas scavenging pipeline 4 forms a circle all around along the shaft bottom, converge after two-port picks out and with power station low pressure gas system connectivity, and the hole inside and outside the tube wall bottom that low pressure gas scavenging pipeline 4 is embedded in bottom section has communicating pipe.Utilize the ready-made 0.7MPa low pressure gas system in power station by in the low pressure gas scavenging pipeline 4 access set wells, air-flow sprays from the hole of pipeline bottom, and shaft bottom silt is purged stirring, and silt is mixed with water as far as possible, is convenient to the fully husky effect of the row of realization of sand discharging pump 1; Sand discharging pump 1 is expelled to power station unit tail water by row's sand tube road 2 with silt.Utilize the PLC automatic control system that generally adopts at present to control the start and stop of the low pressure gas scavenging pipeline 4 of sand discharging pump 1 and electromagnetic valve 3 controls automatically at last, to realize whole desilting is arranged the automatic control of husky system according to the water level situation of the startup situation of drainage pump and collecting well.The PLC automatic control system can be selected the sharp PLC of the Automation Co., Ltd automatic control system that reaches in Chengdu for use.Described row's sand tube road 2 is the DN100mm seamless steel pipe.Described low pressure gas scavenging pipeline 4 is the DN20mm stainless-steel pipe.Described low pressure gas scavenging pipeline 4 is offered the hole of three Φ 4 every 200mm.The size of caliber and be the conclusion that after simulated test repeatedly, draws in the selection of holing on the pipeline.Can set the method for operation of automatic desilting system by the PLC automatic control system, drainage pump opens automatically, stops according to design water level, whether control starts electromagnetic valve and sand discharging pump to the PLC automatic control system according to the drainage pump number of starts, start electromagnetic valve immediately as 5 later PLC automatic control systems of drainage pump startup seepage collecting well shaft bottom is purged, start sand discharging pump simultaneously and arrange sand automatically; According to the opening, stop of automatic control electromagnetic valve of collecting well water level PLC automatic control system and sand discharging pump, start in addition, be lower than a certain water level and stop such as being higher than a certain water level.Seepage collecting well automatic desilting system also can carry out corresponding setting according to the variation of silt alluvial situation in the seepage collecting well, to adapt to the husky needs of Hydroelectric Power Station collecting well automatic desilting row.
Claims (4)
1. Hydroelectric Power Station collecting well automatic desilting system, comprise drainage pump, it is characterized in that: also comprise sand discharging pump (1), be communicated with the row sand tube road (2) of sand discharging pump (1) to power station unit tail water, be provided with the low pressure gas scavenging pipeline (4) of electromagnetic valve (3), level switch, and and drainage pump, level switch, the PLC automatic control system that sand discharging pump (1) is connected with electromagnetic valve (3), the suction of sand discharging pump (1) husky mouthful (5) is positioned at the center, shaft bottom, low pressure gas scavenging pipeline (4) forms a circle all around along the shaft bottom, converge after two-port picks out and with power station low pressure gas system connectivity, and have inside and outside hole of communicating pipe in the tube wall bottom that low pressure gas scavenging pipeline (4) is embedded in bottom section.
2. a kind of Hydroelectric Power Station collecting well automatic desilting according to claim 1 system, it is characterized in that: described low pressure gas scavenging pipeline (4) is the DN20mm stainless-steel pipe.
3. according to a kind of Hydroelectric Power Station collecting well automatic desilting system described in the claim 2, it is characterized in that: described low pressure gas scavenging pipeline (4) is offered the hole of three Φ 4 every 200mm.
4. according to the described a kind of Hydroelectric Power Station collecting well automatic desilting of arbitrary claim in the claim 1 to 3 system, it is characterized in that: described row's sand tube road (2) is the DN100mm seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201558486U CN201473984U (en) | 2009-05-21 | 2009-05-21 | Automatic desilting system of leakage water-collecting well of hydropower station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201558486U CN201473984U (en) | 2009-05-21 | 2009-05-21 | Automatic desilting system of leakage water-collecting well of hydropower station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201473984U true CN201473984U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201558486U Expired - Fee Related CN201473984U (en) | 2009-05-21 | 2009-05-21 | Automatic desilting system of leakage water-collecting well of hydropower station |
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| CN (1) | CN201473984U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818491A (en) * | 2010-05-31 | 2010-09-01 | 四川省水利水电勘测设计研究院 | Drainage system of hydropower station |
| CN102510041A (en) * | 2011-12-13 | 2012-06-20 | 河南省电力公司平顶山供电公司 | Automatic desilting device for substation cable trench |
| CN102635133A (en) * | 2012-04-24 | 2012-08-15 | 中国水电顾问集团华东勘测设计研究院 | Sump dredging system and mode |
| CN102767225A (en) * | 2012-05-31 | 2012-11-07 | 德清县供电局 | Automatic water-discharging device for power-distributing room |
| CN104929085A (en) * | 2015-07-07 | 2015-09-23 | 苏州汇诚智造工业设计有限公司 | Automatic drainage system for construction of water conservancy project and manufacturing and using method thereof |
| CN108732982A (en) * | 2017-04-24 | 2018-11-02 | 宝山钢铁股份有限公司 | A kind of sludge content control device and its control method |
| CN109162308A (en) * | 2018-10-16 | 2019-01-08 | 中国矿业大学(北京) | A kind of Novel full-automatic intelligent sump dredging device |
| CN111442905A (en) * | 2020-04-07 | 2020-07-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Simulation system for air overflow and sand discharge |
| CN113846744A (en) * | 2021-09-30 | 2021-12-28 | 华能澜沧江水电股份有限公司 | Novel hydropower station unit top cover drainage system and implementation method thereof |
-
2009
- 2009-05-21 CN CN2009201558486U patent/CN201473984U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818491A (en) * | 2010-05-31 | 2010-09-01 | 四川省水利水电勘测设计研究院 | Drainage system of hydropower station |
| CN102510041A (en) * | 2011-12-13 | 2012-06-20 | 河南省电力公司平顶山供电公司 | Automatic desilting device for substation cable trench |
| CN102635133A (en) * | 2012-04-24 | 2012-08-15 | 中国水电顾问集团华东勘测设计研究院 | Sump dredging system and mode |
| CN102767225A (en) * | 2012-05-31 | 2012-11-07 | 德清县供电局 | Automatic water-discharging device for power-distributing room |
| CN104929085A (en) * | 2015-07-07 | 2015-09-23 | 苏州汇诚智造工业设计有限公司 | Automatic drainage system for construction of water conservancy project and manufacturing and using method thereof |
| CN108732982A (en) * | 2017-04-24 | 2018-11-02 | 宝山钢铁股份有限公司 | A kind of sludge content control device and its control method |
| CN108732982B (en) * | 2017-04-24 | 2020-12-22 | 宝山钢铁股份有限公司 | Sludge content control device and control method thereof |
| CN109162308A (en) * | 2018-10-16 | 2019-01-08 | 中国矿业大学(北京) | A kind of Novel full-automatic intelligent sump dredging device |
| CN111442905A (en) * | 2020-04-07 | 2020-07-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Simulation system for air overflow and sand discharge |
| CN113846744A (en) * | 2021-09-30 | 2021-12-28 | 华能澜沧江水电股份有限公司 | Novel hydropower station unit top cover drainage system and implementation method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20100521 |