CN211401323U - Facility for utilizing existing drainage gate to drain down and monitor ecological flow - Google Patents
Facility for utilizing existing drainage gate to drain down and monitor ecological flow Download PDFInfo
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- CN211401323U CN211401323U CN202020031088.4U CN202020031088U CN211401323U CN 211401323 U CN211401323 U CN 211401323U CN 202020031088 U CN202020031088 U CN 202020031088U CN 211401323 U CN211401323 U CN 211401323U
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Abstract
The utility model relates to an ecological flow sluices facility. The utility model aims to provide a facility for monitoring ecological flow by utilizing the drainage of the existing drainage gate, which has the characteristics of simple structure, convenience and easiness. The technical scheme is as follows: the utility model provides an utilize facility that current earial drainage floodgate let out and monitor ecological flow which characterized in that: this facility is including installing the water conservancy diversion basin at the barrage downstream side, and the water conservancy diversion basin includes the earial drainage section and the monitoring section that set gradually along the rivers direction, and the earial drainage hole and the earial drainage section intercommunication of barrage are equipped with the unloading floodgate in the earial drainage section, are equipped with the floodgate that leaks down between earial drainage section and the monitoring section, are equipped with ecological flow monitoring equipment and the weir that measures that set gradually along the rivers direction in the monitoring section.
Description
Technical Field
The utility model relates to an ecological flow sluices the facility, in particular to utilize the facility that current earial drainage floodgate let out and monitor ecological flow down.
Background
Based on the consideration of environmental protection, after a reservoir dam matched with a power station is built, ecological flow needs to be timely released to downstream, otherwise, the downstream is in a flow-breaking and water-reducing state, and the downstream ecological environment is damaged. For most rural hydropower stations, ecological flow discharge holes and monitoring equipment are not preset in the engineering design stage. For a power station with a leakage valve on a dam, the purposes of downward drainage and monitoring of ecological flow can be achieved by arranging a bypass pipe and a flow meter at the downstream of the leakage valve. For the power station with the drain gate on the dam, as the drain gate 4 generally adopts a pull rod gate and is positioned at the inlet side of the drain hole 3, and the outlet of the drain hole is basically flush with the dam, no space is available for ecological flow discharge reconstruction and installation of monitoring equipment. Therefore, a new measure is needed to satisfy the requirements of ecological flow discharge without affecting the safety of the dam and saving investment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming not enough among the above-mentioned background art, provide an utilize the facility of letting out and monitoring ecological flow of current earial drainage floodgate, this facility should have simple structure, convenient easy characteristics.
The technical scheme of the utility model is that:
the utility model provides an utilize facility that current earial drainage floodgate let out and monitor ecological flow which characterized in that: this facility is including installing the water conservancy diversion basin at the barrage downstream side, and the water conservancy diversion basin includes the earial drainage section and the monitoring section that set gradually along the rivers direction, and the earial drainage hole and the earial drainage section intercommunication of barrage are equipped with the unloading floodgate in the earial drainage section, are equipped with the floodgate that leaks down between earial drainage section and the monitoring section, are equipped with ecological flow monitoring equipment and the weir that measures that set gradually along the rivers direction in the monitoring section.
The width and the height of the diversion water tank are 0.3-0.5 m; the height of the water measuring weir is less than or equal to 0.1 m.
The ecological flow monitoring equipment is a radar flow meter, a radar water level gauge, an ultrasonic water level gauge or a Parshall tank.
In the diversion flume, the drainage section and the monitoring section are arranged along the barrage and the bank slope of the river channel, the front half sections of the drainage section and the monitoring section are transverse groove bodies parallel to the length direction of the barrage, and the rear half section of the monitoring section is a longitudinal groove body perpendicular to the length direction of the barrage.
The ecological flow monitoring equipment and the water measuring weir are arranged in the longitudinal groove body.
The utility model has the advantages that:
the utility model discloses effectively utilized current earial drainage floodgate to lay ecological flow and let out and monitoring facilities down, both satisfied ecological environment protection's requirement, do not influence the safety of having built hydraulic structure again, successfully solved and built the rural hydropower station that supporting reservoir is equipped with the earial drainage floodgate and let out the difficult problem of ecological flow down, had better environment and economic benefits.
Drawings
Fig. 1 is a schematic top view of the present invention.
Fig. 2 is a schematic view of the barrage of fig. 1 in a horizontal orientation (direction a1 in fig. 1).
Fig. 3 is a partially enlarged schematic view of fig. 1.
Fig. 4 is a schematic horizontal view of the vertical trough body of the present invention (direction a2 in fig. 3).
Detailed Description
The present invention is further described in the following by the embodiments, which are only used for the clearer and more complete description of the present invention, but it should not be understood as the limitation of the protection scope of the present invention, and other examples of the non-essential improvement and adjustment made by the person skilled in the art according to the above contents belong to the protection scope of the present invention.
As shown in fig. 1, a facility for utilizing the existing drainage gate to drain and monitor ecological flow comprises a diversion flume 5, an emptying gate 9, a drainage gate 8, a flow stabilizing wall 10, an ecological flow monitoring device 6 and a water measuring weir 7.
The water diversion flume is arranged at the downstream side of the barrage 1 and needs to be arranged along bank slopes of the barrage and the river channel 2, and facilities and equipment are prevented from being damaged by overflow water flow of the barrage. The water diversion water tank comprises a drainage section 5.1 and a monitoring section 5.2 which are sequentially arranged along the water flow direction. The cross section of the diversion water tank is rectangular.
The diversion flume is of an L-shaped or approximately L-shaped structure, wherein the front half sections of the drainage section and the monitoring section are transverse tank bodies 5.3 which are generally parallel to the length direction (horizontal direction in figure 1) of the barrage, and the rear half sections of the monitoring section are longitudinal tank bodies 5.4 which are generally vertical to the length direction of the barrage.
The discharge hole 3 and the discharge section intercommunication of barrage, be equipped with opening intercommunication discharge hole on one side cell wall of the water conservancy diversion basin of discharge section, the air-release gate sets up on the opposite side cell wall of the water conservancy diversion basin of discharge section, the floodgate setting is between discharge section and monitoring segment down, the stationary flow wall of spending, ecological flow monitoring facilities and measuring weir set gradually in the monitoring segment along the rivers direction, the stationary flow wall of spending sets up in horizontal cell body and ecological flow monitoring facilities and measuring weir all set up in vertical cell body.
The ecological flow monitoring equipment adopts a channel water measuring method, can be a radar flow meter, a radar water level meter, an ultrasonic water level meter or a Parshall tank and the like, and can be determined according to the ecological flow and the application conditions of various water measuring facilities.
The width B and the height H of the diversion water tank are determined according to geological conditions and actual discharged ecological flow, and the width B and the height H are preferably 0.3-0.5 m. The height P of the water measuring weir is determined according to the actual discharged ecological flow, and P is preferably not more than 0.1 m.
The utility model discloses a theory of operation is:
during the emptying period of the reservoir, the discharge gate on the barrage is fully opened, in the utility model, the lower discharge gate is closed, the emptying gate is fully opened, and the emptying water flow is ensured to flow downwards; during ecological flow released, 4 little apertures of the floodgate that lets out on the barrage are opened and are kept the earial drainage (open the angle and survey according to calculating), the utility model discloses in, let out the floodgate under open, let out the floodgate and close, guarantee ecological flow and release.
In this embodiment, the following calculation methods are adopted for the measurement and calculation of the related parameters:
if the average flow of the river is 0.66m for many years3The ecological flow of the power station is generally 10 percent of the annual average flow of the river, namely 0.066m3S; the section of the diversion flume is rectangular, the width is 0.4m, the height is 0.4m, a probe of a radar flowmeter arranged in the diversion flume is 1m away from the weir, and the height of the weir is 0.1 m.
Calculating the discharge flow by adopting a wide top weir free outflow formula:
in the formula:
q-lower bleed flow rate, m3/s；
M is flow coefficient, and 0.35 is taken;
b is the section width, m, 0.4m is taken;
H0calculating the total water head, m, of the weir of the advancing flow velocity water head to be 0.23;
g-acceleration of gravity, m/s2And 9.81 can be taken.
By changing the width B and the water head H of the diversion water tank0To meet the requirements of the bleed-down flow.
According to the calculation, the water tank acting water head gets H0When the flow rate is 0.23m, the flow discharge capacity of the measuring weir is 0.068m3And/s, meeting the requirement of minimum downward discharge ecological flow.
Claims (5)
1. The utility model provides an utilize facility that current earial drainage floodgate let out and monitor ecological flow which characterized in that: this facility is including installing water conservancy diversion basin (5) at barrage (1) downstream side, the water conservancy diversion basin includes earial drainage section (5.1) and the monitoring section (5.2) that set gradually along the rivers direction, the earial drainage hole (3) and the earial drainage section intercommunication of barrage, the earial drainage section is equipped with atmospheric relief floodgate (9), be equipped with between earial drainage section and the monitoring section and let down floodgate (8), be equipped with ecological flow monitoring facilities (6) and gaging weir (7) that set gradually along the rivers direction in the monitoring section.
2. The facility for utilizing the existing drain gate to drain and monitor ecological traffic as claimed in claim 1, wherein: the width and the height of the diversion water tank are 0.3-0.5 m; the height of the water measuring weir is less than or equal to 0.1 m.
3. The facility for utilizing the existing drain gate to drain and monitor ecological traffic as claimed in claim 2, wherein: the ecological flow monitoring equipment is a radar flow meter, a radar water level gauge, an ultrasonic water level gauge or a Parshall tank.
4. The facility for utilizing the existing drain gate to drain and monitor ecological traffic as claimed in claim 3, wherein: in the water diversion water tank, the drainage section and the monitoring section are arranged along the barrage and the bank slope of the river channel, the front half section of the edge of the drainage section and the front half section of the edge of the monitoring section are transverse groove bodies (5.3) parallel to the length direction of the barrage, and the rear half section of the monitoring section is a longitudinal groove body (5.4) perpendicular to the length direction of the barrage.
5. The facility for utilizing the existing drain gate to drain and monitor ecological traffic as claimed in claim 4, wherein: the ecological flow monitoring equipment and the water measuring weir are arranged in the longitudinal groove body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020031088.4U CN211401323U (en) | 2020-01-07 | 2020-01-07 | Facility for utilizing existing drainage gate to drain down and monitor ecological flow |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020031088.4U CN211401323U (en) | 2020-01-07 | 2020-01-07 | Facility for utilizing existing drainage gate to drain down and monitor ecological flow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114594803A (en) * | 2022-02-16 | 2022-06-07 | 广东省水利水电科学研究院 | Ecological flow discharge and monitoring equipment for small hydropower station and control method thereof |
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2020
- 2020-01-07 CN CN202020031088.4U patent/CN211401323U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114594803A (en) * | 2022-02-16 | 2022-06-07 | 广东省水利水电科学研究院 | Ecological flow discharge and monitoring equipment for small hydropower station and control method thereof |
| CN114594803B (en) * | 2022-02-16 | 2022-10-04 | 广东省水利水电科学研究院 | Ecological flow of little power station is released, monitoring facilities |
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