CN116625439A - Real-time monitoring device for drainage flow under hydraulic and hydroelectric engineering - Google Patents
Real-time monitoring device for drainage flow under hydraulic and hydroelectric engineering Download PDFInfo
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- CN116625439A CN116625439A CN202310629141.9A CN202310629141A CN116625439A CN 116625439 A CN116625439 A CN 116625439A CN 202310629141 A CN202310629141 A CN 202310629141A CN 116625439 A CN116625439 A CN 116625439A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims description 23
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
-
- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses a real-time monitoring device for the lower drainage flow of a hydraulic and hydroelectric engineering, which relates to water flow detection equipment, and comprises a gate assembly and a lower drainage flow measurement assembly, wherein the gate assembly comprises a first gate plate and a first lifting mechanism, a through flow passage and a cut-off passage which are vertically arranged are arranged on the first gate plate, the through flow passage is vertical to the first gate plate, and the lower drainage flow measurement assembly is arranged in the through flow passage; the method is characterized in that a lower leakage flow measuring assembly is arranged in a through flow passage of the first flashboard, a second flashboard which is opened in the same proportion as the first flashboard is arranged on the first flashboard, so that water flow after the second flashboard is opened can push a piston in the lower leakage flow measuring assembly to move under the action of pressure, a piezoelectric plate is correspondingly changed, the piezoelectric change is converted into water pressure change, the flow in a pipeline is calculated by utilizing the relation between the flow in the pipeline and the pressure, and the lower leakage flow generated by the corresponding height of the gate opening is calculated according to the proportional relation between the diameter of the pipeline and the width of the gate.
Description
Technical Field
The invention relates to a device for detecting the downward leakage flow, in particular to a device for monitoring the downward leakage flow of a hydraulic and hydroelectric engineering in real time.
Background
The real-time monitoring equipment for the discharged ecological flow of the hydraulic and hydroelectric engineering is equipment for measuring the quality or the water quantity of the discharged water flow of the hydraulic and hydroelectric engineering; the common mode for monitoring the drainage flow is to install a water level gauge at the side of a water channel, fix the width of the water channel, measure the water flow speed through a handheld flow meter, multiply the water level by the width of the water channel through the water level gauge to obtain the water flow sectional area, multiply the water flow sectional area by the water flow speed to obtain the drainage flow, however, each measurement needs to be manually measured for each variable, which is inconvenient;
the utility model provides a hydraulic and hydroelectric engineering drainage flow real-time monitoring device, includes to set up the span on the duct, is provided with the mounting panel on the span, and the bottom of mounting panel is provided with the slide pipe, alternates in the slide pipe has the slide bar, and the bottom of slide bar is provided with velocity of flow propeller blade sensor, is provided with the kickboard on the slide bar and the kickboard is located velocity of flow propeller blade sensor's upside position. Along with the rising or falling of the water level, the floating plate moves up and down along with the rising or falling of the water level, so that the flow speed rotating blade sensor and the through pipe are driven to move up and down, the flow speed rotating blade sensor is kept to be inserted into water to sense the water flow speed, the laser range finder always keeps the laser emitted by the emitting head of the laser range finder aligned with the baffle plate, the real-time water flow height and the real-time water flow speed can be obtained through a peripheral computer, the water flow sectional area can be obtained through the known water channel width, the water flow sectional area is multiplied by the water flow speed, and the leakage flow is obtained, so that the staff is not required to arrive at the site to measure various variables, and the measuring is more convenient;
the applicant has found, in combination with actual work, that the accuracy of the prior art downdraft flow measurement is lower after analysis of the prior art.
Disclosure of Invention
The invention aims to provide a real-time monitoring device for the drainage flow in a water conservancy and hydropower project, which solves the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a real-time monitoring device for lower drainage flow of a hydraulic and hydroelectric engineering, which comprises a gate assembly and a lower drainage flow measuring assembly, wherein the gate assembly comprises a first gate plate and a first lifting mechanism connected with the first gate plate, a through flow passage and a cut-off passage which are vertically arranged are arranged on the first gate plate, the through flow passage is perpendicular to the first gate plate, the lower drainage flow measuring assembly is arranged in the through flow passage, a second gate plate is arranged in the cut-off passage, the second gate plate is connected with the second lifting mechanism, and the coverage area of the second gate plate is larger than the flow area of the through flow passage; the lower leakage flow measuring assembly comprises a piezoelectric sheet and a piston which are connected through a spring, wherein the piezoelectric sheet is arranged at the bottom of the through flow channel, a downward fan-shaped lower leakage port is arranged between the bottom of the through flow channel and the first flashboard, the fan-shaped lower leakage port is positioned outside the first flashboard, and the diameter of the piston is the same as that of the through flow channel; the bottom length of the through flow channel is not less than the sum of the thickness of the piezoelectric sheet, the compression thickness of the spring and the thickness of the piston; when the piston is at the maximum extension length, a water storage interval is arranged between the piston and the second flashboard; the stroke length of the second flashboard is not smaller than the diameter of the through flow channel; the displacement amount of the second shutter is equal to the displacement amount of the first shutter (diameter of the through flow passage/stroke length of the first shutter); the piezoelectric sheet is electrically connected with the monitoring control unit.
Preferably, a displacement sensor is arranged on the first flashboard, and the displacement sensor, the first lifting mechanism and the second lifting mechanism are all electrically connected with the monitoring control unit.
Preferably, the diameter of the spring is not less than one half of the diameter of the through flow passage.
Preferably, the through flow passage is close to the bottom of the first gate plate, and the distance between the through flow passage and the top of the first gate plate is larger than the ascending stroke of the first gate plate.
Preferably, the fan-shaped opening angle of the fan-shaped lower drain opening is smaller than 90 degrees.
Preferably, the fan-shaped opening angle of the fan-shaped lower drain opening is 30 degrees.
Preferably, a partition plate is arranged in the middle of the fan-shaped lower drain opening.
Preferably, when the piston is at its maximum extension, there is a preset spacing between the piston and the fan-shaped lower vent.
Preferably, a water temperature probe is arranged at the lower drain opening of the fan shape.
Preferably, a water quality sensor is arranged at the lower drain opening of the fan shape.
Compared with the prior art, the invention has the following technical effects:
1. the invention adopts a mode of arranging a lower leakage flow measuring assembly in a through flow passage of a first flashboard in the real-time monitoring device for the lower leakage flow of the hydraulic and hydroelectric engineering, and the second flashboard which is opened in the same proportion as the first flashboard is arranged on the first flashboard, so that after the second flashboard is opened, water flow can push a piston in the lower leakage flow measuring assembly to move under the action of pressure, and then a piezoelectric plate generates corresponding change, the piezoelectric change is converted into water pressure change, thereby calculating the flow in a pipeline by utilizing the relation between the flow in the pipeline and the pressure, and calculating the accurate lower leakage flow generated by the corresponding height of the opening of the gate according to the proportional relation between the diameter of the pipeline and the width of the gate;
2. according to the real-time monitoring device for the lower drainage flow of the hydraulic and hydroelectric engineering, the through flow channel is arranged near the bottom of the first flashboard, so that a water source contacted by the piston in the lower drainage flow measuring assembly is more close to a water source flowing out from the lower part of the first flashboard, and the accuracy of measurement is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a real-time monitoring device for the drainage flow under the hydraulic and hydroelectric engineering in the invention;
FIG. 2 is a partial cross-sectional view of the structure of FIG. 1;
FIG. 3 is a partial cross-sectional view of the structure of FIG. 2;
FIG. 4 is a schematic diagram of a structure of a down leak flow measurement assembly;
FIG. 5 is a schematic view of a second shutter structure;
the device comprises a first flashboard 1, a first lifting mechanism 2, a through runner 3, a cut-off channel 4, a second flashboard 5, a second lifting mechanism 6, a piezoelectric sheet 7, a spring 8, a piston 9, a fan-shaped lower drain 10, a water storage interval 11, a displacement sensor 12 and a preset interval 13.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 5, this embodiment provides a real-time monitoring device for drainage volume under hydraulic and hydroelectric engineering, including the gate subassembly that is used for opening and close the water course, the gate subassembly includes first flashboard 1 and the first elevating system 2 that is connected with first flashboard 1, and this gate subassembly is prior art, and the details are not described here, and the main characteristics that are different from prior art are: the present embodiment needs to acquire the real-time lifting displacement of the first shutter 1 to control the lifting displacement of the second shutter 5 described below; the first gate plate 1 is also required to be provided with a through flow channel 3 and a cut-off channel 4 which are vertically arranged, the through flow channel 3 is vertical to the first gate plate 1, a lower leakage flow measuring component is arranged in the through flow channel 3, the cut-off channel 4 is internally provided with a second gate plate 5, the second gate plate 5 is connected with a second lifting mechanism 6, and the coverage area of the second gate plate 5 is larger than the flow area of the through flow channel 3; in order to ensure that the through flow channel 3 is fully penetrated, the stroke length of the second gate plate 5 is not smaller than the diameter of the through flow channel 3 in the embodiment, so that the second gate plate 5 can fully open the through flow channel 3; the first lifting mechanism 2 and the second lifting mechanism 6 are screw lifting motors;
the lower leakage flow measuring assembly comprises a piezoelectric sheet 7 and a piston 9 which are connected through a spring 8, the piezoelectric sheet 7 is arranged at the bottom of the through flow channel 3, the diameter of the piston 9 is the same as that of the through flow channel 3, and since the water pressure which changes in real time in the flowing state is measured in the embodiment, a downward fan-shaped lower leakage port 10 is arranged between the bottom of the through flow channel 3 and the first flashboard 1 to ensure that water in the through flow channel 3 can smoothly flow out, meanwhile, the piston 9 is oppositely arranged with the water flow direction, and the fan-shaped lower leakage port 10 is downward, so that water can directly impact the piezoelectric sheet 7 and then flow out at the fan-shaped lower leakage port 10 without influencing the detection of the water pressure in the flow channel; of course, in order to facilitate the water flow to drain, the installation position of the fan-shaped lower drain port 10 is arranged outside the first flashboard 1 in the present embodiment; when the spring 8 is at the maximum compression amount, the length of the bottom of the through flow channel 3 is not less than the sum of the thickness of the piezoelectric sheet 7, the compression thickness of the spring 8 and the thickness of the piston 9, so that the full opening of the fan-shaped lower leakage opening 10 is ensured, and the lower leakage amount is ensured; in order to avoid the problem of local stress concentration caused by uneven acting force of water flow on the piston 9 due to the fact that the opening height of the second flashboard 5 is smaller than the radius of the through flow channel 3, in the embodiment, when the piston 9 is in the maximum extension length, a water storage interval 11 is ensured between the piston 9 and the second flashboard 5, so that the water flow firstly enters the water storage interval 11, and then the piston 9 is extruded in all aspects; the displacement amount of the second shutter 5 is equal to the displacement amount of the first shutter 1 (diameter of the through flow passage 3/stroke length of the first shutter 1); the piezoelectric sheet 7 is electrically connected with the monitoring control unit, and piezoelectric values are obtained through experiments by utilizing elements such as a pressure sensor, and the conversion of the piezoelectric values and the water pressure values is not in the protection range of the embodiment, so that the description is omitted; the relation between the flow and the water pressure value can refer to the prior art, and then the water channel flow value is calculated through the flow value of the through flow channel, which is not described herein, for example: (https:// www.docin.com/p-753874093. Html).
In order to obtain the real-time displacement of the first flashboard 1 conveniently, the first flashboard 1 is provided with a displacement sensor 12, the first lifting mechanism 2 and the second lifting mechanism 6 are electrically connected with a monitoring control unit, the monitoring control unit adjusts the first lifting mechanism 2 according to the input displacement value, verifies whether the input displacement value is finished according to the detection value of the displacement sensor 12, calculates an average displacement value from the detection value of the displacement sensor 12 and the input displacement value, and calculates the displacement value of the second lifting mechanism 6 which should lift according to the average displacement value.
In order to ensure the movement stability of the piston 9, the diameter of the spring 8 is not smaller than one half, preferably three quarters, of the diameter of the through flow channel 3 in the invention, and the maximum is not more than four fifths, so that the spring 8 is prevented from generating instantaneous radial deformation to collide with the inner wall of the through flow channel 3.
On the one hand, in order to avoid collision between the through runner 3 and the mounting plate of the first lifting mechanism 2; on the other hand, in order to improve the accuracy of measurement, the water source contacted by the piston 9 in the lower leakage flow measuring assembly is more close to the water source flowing out from the lower part of the first flashboard 1, and the consistency of the water source is ensured, in the invention, the through flow channel 3 is arranged near the bottom of the first flashboard 1, and the distance between the through flow channel 3 and the top of the first flashboard 1 is larger than the ascending stroke of the first flashboard 1.
In order to avoid the problem that the fan-shaped lower drain opening 10 is too large to cause the skew easily to occur in the moving process of the piston 9, the fan-shaped opening angle of the fan-shaped lower drain opening 10 is smaller than 90 degrees; preferably 30 degrees. Further, in the invention, the middle part of the fan-shaped lower drain opening 10 is provided with the partition plate which is parallel to the axis of the through flow channel 3, the fan-shaped lower drain opening 10 is divided into two parts, and the inner wall of the partition plate is in smooth transition connection with the inner wall of the through flow channel 3, so that the movement stability of the piston 9 is further enhanced.
Because the first flashboard 1 has a certain sinking amount relative to the bottom surface of the water channel, when the piston 9 is at the maximum extension length, a preset interval 13 is arranged between the piston 9 and the fan-shaped lower discharge opening 10, so that the phenomenon that water flows out of the fan-shaped lower discharge opening 10 is avoided, and no water flows out of the lower part of the first flashboard 1 occurs, and the size of the preset interval 13 is determined according to practical conditions.
For measuring the water flow temperature, a water temperature probe is arranged at the fan-shaped lower drain opening 10 in the invention.
In order to measure the water quality of water flow, a water quality sensor is arranged at the fan-shaped lower drain opening 10.
The adaptation to the actual need is within the scope of the invention.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a hydraulic and hydroelectric engineering is leakage flow real-time monitoring device down, its characterized in that includes gate subassembly and lower leakage flow measuring subassembly, gate subassembly includes first flashboard and with first elevating system that first flashboard is connected, be provided with the through-flow channel and the passageway of cutting off of vertical arrangement on the first flashboard, the through-flow channel is perpendicular to first flashboard, be provided with in the through-flow channel lower leakage flow measuring subassembly, be provided with the second flashboard in the passageway of cutting off, second flashboard and elevating system are connected, the coverage area of second flashboard is greater than the flow area of through-flow channel; the lower leakage flow measuring assembly comprises a piezoelectric sheet and a piston which are connected through a spring, wherein the piezoelectric sheet is arranged at the bottom of the through flow channel, a downward fan-shaped lower leakage port is arranged between the bottom of the through flow channel and the first flashboard, the fan-shaped lower leakage port is positioned outside the first flashboard, and the diameter of the piston is the same as that of the through flow channel; the bottom length of the through flow channel is not less than the sum of the thickness of the piezoelectric sheet, the compression thickness of the spring and the thickness of the piston; when the piston is at the maximum extension length, a water storage interval is arranged between the piston and the second flashboard; the stroke length of the second flashboard is not smaller than the diameter of the through flow channel; the displacement amount of the second shutter is equal to the displacement amount of the first shutter (diameter of the through flow passage/stroke length of the first shutter); the piezoelectric sheet is electrically connected with the monitoring control unit.
2. The real-time monitoring device for the drainage flow under the hydraulic and hydroelectric engineering according to claim 1, wherein a displacement sensor is arranged on the first flashboard, and the displacement sensor, the first lifting mechanism and the second lifting mechanism are electrically connected with the monitoring control unit.
3. The real-time monitoring device for the drainage flow under the hydraulic and hydroelectric engineering according to claim 2, wherein the diameter of the spring is not smaller than one half of the diameter of the through flow passage.
4. The real-time monitoring device for the drainage flow under the hydraulic and hydroelectric engineering according to claim 3, wherein the through flow channel is close to the bottom of the first flashboard, and the distance between the through flow channel and the top of the first flashboard is larger than the ascending stroke of the first flashboard.
5. The real-time monitoring device for the drainage flow under the hydraulic and hydroelectric engineering according to claim 1 or 4, wherein the angle of the fan-shaped opening of the fan-shaped drainage opening is smaller than 90 degrees.
6. The real-time monitoring device for the drainage flow under the hydraulic and hydroelectric engineering according to claim 5, wherein the fan-shaped opening angle of the fan-shaped drainage opening is 30 degrees.
7. The real-time monitoring device for the drainage flow under the hydraulic and hydroelectric engineering according to claim 5, wherein a partition plate is arranged in the middle of the fan-shaped drainage opening.
8. The real-time monitoring device for the drainage flow under the hydraulic and hydroelectric engineering according to claim 1, wherein when the piston is in the maximum extension length, a preset interval is reserved between the piston and the fan-shaped drainage opening.
9. The real-time monitoring device for the drainage flow under the hydraulic and hydroelectric engineering according to claim 1, wherein a water temperature probe is arranged at the fan-shaped drainage opening.
10. The real-time monitoring device for the drainage flow under the hydraulic and hydroelectric engineering according to claim 9, wherein a water quality sensor is arranged at the fan-shaped drainage opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310629141.9A CN116625439A (en) | 2023-05-31 | 2023-05-31 | Real-time monitoring device for drainage flow under hydraulic and hydroelectric engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310629141.9A CN116625439A (en) | 2023-05-31 | 2023-05-31 | Real-time monitoring device for drainage flow under hydraulic and hydroelectric engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116625439A true CN116625439A (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310629141.9A Withdrawn CN116625439A (en) | 2023-05-31 | 2023-05-31 | Real-time monitoring device for drainage flow under hydraulic and hydroelectric engineering |
Country Status (1)
| Country | Link |
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| CN (1) | CN116625439A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330140A (en) * | 2023-12-01 | 2024-01-02 | 山东省林业科学研究院 | Monitoring and measuring device for flow of wetland water channel |
-
2023
- 2023-05-31 CN CN202310629141.9A patent/CN116625439A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330140A (en) * | 2023-12-01 | 2024-01-02 | 山东省林业科学研究院 | Monitoring and measuring device for flow of wetland water channel |
| CN117330140B (en) * | 2023-12-01 | 2024-03-08 | 山东省林业科学研究院 | Monitoring and measuring device for flow of wetland water channel |
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Application publication date: 20230822 |
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| WW01 | Invention patent application withdrawn after publication |