CN202453029U - Measuring system for reservoir level - Google Patents
Measuring system for reservoir level Download PDFInfo
- Publication number
- CN202453029U CN202453029U CN2011204463697U CN201120446369U CN202453029U CN 202453029 U CN202453029 U CN 202453029U CN 2011204463697 U CN2011204463697 U CN 2011204463697U CN 201120446369 U CN201120446369 U CN 201120446369U CN 202453029 U CN202453029 U CN 202453029U
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- water level
- measuring system
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- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 22
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract 1
- 239000003818 cinder Substances 0.000 description 7
- 239000013307 optical fiber Substances 0.000 description 4
- 238000010977 unit operation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000010782 bulky waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model provides a measuring system for a reservoir level. The measuring system comprises bubble water level gages arranged upstream and downstream respectively, a water level central control unit, a monitoring system and a display system, wherein the water level central control unit is connected with the bubble water level gages, the monitoring system and the display system. The measuring system is characterized by further comprising water level gauges which are arranged behind trash racks at a water inlet and connected with the water level central control unit. According to the measuring system, the water level gauges are arranged behind the trash racks of units, therefore actual water levels of the trash racks of the units can be mastered in real time, the problem of unstable and insecure operation of the units caused by great differences between the upper level and the level behind the trash racks at a runoff power station in a flood season is solved, a scientific decision basis is provided for shutting down for slag removal of the trash racks, and the efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of reservoir level measuring system, especially relate to a kind of measuring system of monitoring water level behind the reservoir trash rack.
Background technology
Hydroelectric power plant's reservoir level measuring system; As shown in Figure 1: as generally respectively to adorn two cover water level gauges at the downstream and the upper reaches of reservoir; Water levels of upstream and downstream is delivered to the water level centralized control unit through on the optical cable; Centralized control unit is communicated by letter with water level computing machine LCU, water levels of upstream and downstream direct information factory supervisory system, supplies that each unit is controlled, regimen system and pulpit water level picture keep watch on.
According to runoff power station operation practice for many years, particularly flood season, the reservoir water quality inferiority, floater many with characteristics such as bulky refuse under water is many.Wire rope water level gauge, ultrasonic water level gauge etc. are all inapplicable.Through the bubble water level gauge of operation test for many years, be adapted at the operation of runoff hydropower reservoir station, ruuning situation is good.
But just present, these water level gauges in domestic all power stations all only are installed in upstream and downstream, behind the trash rack of unit, do not install.When the better unit trash rack of reservoir water quality does not stop up, can think that generally water level is identical or close behind upper pond level and the grid, supervisory system can be sent power generation command accurately to unit.Yet when the unit trash rack was stopped up by rubbish, water level had very big difference behind upper pond level and the grid, and maximum can reach more than 4 meters; Because the upper pond level information that is still of supervisory system collection; Can't send power generation command accurately to unit, only reliable operations staff intervenes adjusting, because the operations staff can't accurately grasp water level situation behind the grid; Can only rely on and transfer unit output, see the unit vibration throw, listen unit operation sound to judge the unit operation situation; Subjectivity is strong, is prone to cause error in judgement, thereby the safe and stable operation of unit is constituted a threat to.
Summary of the invention
Technical matters to be solved by this invention provides a kind of reservoir level measuring system; Can accurately monitor out trash rack front and back water level, the unit operation of causing instability is decided, unsafe problem thereby water level has big difference behind solution runoff power station flood season upper pond level and the grid.
In order to solve the problems of the technologies described above a kind of reservoir level measuring system of the utility model; Comprise: the bubble water level gauge that is installed in upstream and downstream respectively; The water level centralized control unit that is connected with the bubble water level gauge, supervisory system that is connected with centralized control unit and display system is characterized in that; Also comprise: be installed in the water level gauge behind the trash rack of water inlet, described water level gauge is connected with the water level centralized control unit.
Further, described water level is counted the bubble water level gauge, is provided with a snorkel.
Further, described reservoir level measuring system also comprises the well logging that is installed on behind the trash rack of water inlet, and the snorkel of described water level gauge is installed in the well logging.
The utility model is through being installed on the water level gauge behind the unit grid; Thereby grasp actual water level behind the unit grid in real time; Preferably resolving water level has big difference behind runoff power station flood season upper pond level and the grid, the unit operation of causing is unstable, unsafe problems; Carrying out the trash rack scarfing cinder for shutdown provides the scientific decision foundation, thereby has improved efficient greatly.
Description of drawings
Fig. 1 is the structural representation of existing reservoir level measuring system
Fig. 2 is the structural representation of reservoir level measuring system of the present invention
Embodiment
As shown in Figure 2, a kind of reservoir level measuring system provided by the invention comprises: the bubble water level gauge that is installed in upstream and downstream respectively; The water level centralized control unit that is connected with the bubble water level gauge, supervisory system that is connected with centralized control unit and display system, and be installed on bubble water level gauge and the supporting well logging behind the water inlet trash rack of unit in addition; The quantity of unit is corresponding with the quantity of water level gauge, and well logging is installed solid and reliable, and does not influence rising and falling and scarfing cinder of trash rack; The well logging underwater portion is greater than 6 meters; Well logging will be convenient to cleaning, so that dredge cleaning at any time, guaranteed water level is measured accurately.
Water level gauge is installed near the wall water inlet or the trash rack; Well logging is led directly to 6 meters under water after being installed in trash rack, and the purposes of well logging is that the snorkel that feeds water level gauge under water is installed, and the model of said water level gauge is that the water level information of YCH-1D passes through optical fiber conversion access water level centralized control unit; Real-time monitoring record water level information; Centralized control unit inputs to the unit supervisory system through the optical fiber conversion again, and the water level of quoting as the unit generation regulating and controlling directly is optimized adjusting to unit.Having solved two unit stator and the paddle joints under the abnormal running head of transferring in runoff power station regulates and economic operation problem.
As shown in Figure 2; 1 cover bubble water level gauge is respectively installed in the position near the water inlet of 6 units; 6 cover terrain water level gauges convert the RS485 signal into through optical fiber, deliver to water level gauge centralized control unit chamber, in the centralized control unit chamber and connect and be input in the RS485 RS 232 breakout box; Send the real-time monitoring record water level information of water level gauge centralized control unit to through RS232 again; Centralized control unit inputs to the unit supervisory system through the optical fiber conversion again, and the water level of quoting as the unit generation regulating and controlling directly is optimized adjusting to unit.
Through actual analysis relatively before the grid, behind the grid and data such as level of tail water data and unit load; Unit output is at 50MW and when above (nominal output 60MW); Water-head is generally below 0.6 meter before the grid, behind the grid; And when water-head reached 3 meters left and right sides before the grid, behind the grid, unit output can only reach about 20MW even be lower, and just can consider trash rack is carried out the scarfing cinder operation this moment.From the situation of actual scarfing cinder operation, trash rack was seriously stopped up by foreign material such as pasture and water, branch, fishing nets when water-head reached 3 meters left and right sides before the grid, behind the grid.
A general scarfing cinder activity duration is about 6 hours; Lack generated energy (at most) 20MW * 6h=120MWh this moment; But after the scarfing cinder operation was accomplished, unit can reach completely sent out 60MW, in 2 hours, can accomplish the few generated energy of scarfing cinder in 6 hours like this; Efficient improves greatly, the more important thing is that the stability of unit and security improve greatly.
The foregoing description is the principle and the effect thereof of illustrative the utility model only, but not is used to limit the utility model.Any those skilled in the art all can be under the spirit and category of the utility model, and the foregoing description is modified and changed.Therefore, the rights protection scope of the utility model should be listed like claims.
Claims (5)
1. reservoir level measuring system; Comprise: the bubble water level gauge that is installed in upstream and downstream respectively; The water level centralized control unit that is connected with the bubble water level gauge, supervisory system that is connected with centralized control unit and display system is characterized in that; Also comprise: be installed in the water level gauge behind the trash rack of water inlet, described water level gauge is connected with the water level centralized control unit.
2. reservoir level measuring system according to claim 1 is characterized in that described water level is counted the bubble water level gauge, is provided with a snorkel.
3. reservoir level measuring system according to claim 1 is characterized in that, also comprises the well logging that is installed on behind the trash rack of water inlet, and the snorkel of described water level gauge is installed in the well logging.
4. reservoir level measuring system according to claim 1 is characterized in that the quantity of described water level gauge is corresponding with the quantity of unit.
5. reservoir level measuring system according to claim 3 is characterized in that, said well logging underwater portion is greater than 6 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204463697U CN202453029U (en) | 2011-11-11 | 2011-11-11 | Measuring system for reservoir level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204463697U CN202453029U (en) | 2011-11-11 | 2011-11-11 | Measuring system for reservoir level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453029U true CN202453029U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204463697U Expired - Lifetime CN202453029U (en) | 2011-11-11 | 2011-11-11 | Measuring system for reservoir level |
Country Status (1)
| Country | Link |
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| CN (1) | CN202453029U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458307A (en) * | 2014-12-05 | 2015-03-25 | 国家电网公司 | Water level control method for energy characteristic test of channel diversion-type hydropower station water turbine |
| CN104698961A (en) * | 2015-02-07 | 2015-06-10 | 云南能投威士科技股份有限公司 | Safety warning system of flooded plant |
| CN105300471A (en) * | 2015-12-04 | 2016-02-03 | 重庆多邦科技股份有限公司 | Bubble liquid level detection device of industrial liquid level control system |
| CN112556782A (en) * | 2020-12-04 | 2021-03-26 | 四川华能太平驿水电有限责任公司 | Water diversion type power station reservoir water level measuring device, water level calculating method and system |
-
2011
- 2011-11-11 CN CN2011204463697U patent/CN202453029U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458307A (en) * | 2014-12-05 | 2015-03-25 | 国家电网公司 | Water level control method for energy characteristic test of channel diversion-type hydropower station water turbine |
| CN104458307B (en) * | 2014-12-05 | 2017-03-15 | 国家电网公司 | A kind of power canal development hydraulic turbine energy response tests method for controlling water level |
| CN104698961A (en) * | 2015-02-07 | 2015-06-10 | 云南能投威士科技股份有限公司 | Safety warning system of flooded plant |
| CN105300471A (en) * | 2015-12-04 | 2016-02-03 | 重庆多邦科技股份有限公司 | Bubble liquid level detection device of industrial liquid level control system |
| CN112556782A (en) * | 2020-12-04 | 2021-03-26 | 四川华能太平驿水电有限责任公司 | Water diversion type power station reservoir water level measuring device, water level calculating method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: FUCHUNJIANG HYDROELECTRIC POWER STATION OF EAST CHINA GRID CO., LTD. Effective date: 20130619 Owner name: STATE GRID XINYUAN HYDROELECTRIC COMPANY LIMITED S Effective date: 20130619 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 311504 HANGZHOU, ZHEJIANG PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130619 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: State Grid Xinyuan Hydropower Co., Ltd. Patentee after: Fuchunjiang Hydroelectric Power Plant, State Grid Xinyuan Hydropower Co., Ltd. Address before: 311504 the Fuchun River power plant, the Fuchun River Town, Tonglu County, Hangzhou, Zhejiang Patentee before: Fuchunjiang Hydroelectric Power Station of East China Grid Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |