CN210037860U - Water flow velocity measuring device - Google Patents
Water flow velocity measuring device Download PDFInfo
- Publication number
- CN210037860U CN210037860U CN201921258847.4U CN201921258847U CN210037860U CN 210037860 U CN210037860 U CN 210037860U CN 201921258847 U CN201921258847 U CN 201921258847U CN 210037860 U CN210037860 U CN 210037860U
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- protective shell
- main shaft
- water flow
- measuring device
- rod
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Abstract
The utility model relates to a water flow velocity measuring device, which comprises a handle bar and an installation bar, wherein the rear end of the handle bar is provided with an electronic stopwatch, and the front end of the installation bar is provided with a wing wheel; a length adjusting rod is arranged between the handle rod and the mounting rod; the wing wheel comprises a protective shell, a revolution counter is fixedly arranged on the upper end surface of the protective shell, a main shaft is arranged in the protective shell, the main shaft extends out of the lower end surface of the protective shell, and an impeller is arranged on the extending part of the main shaft; the protective shell is also internally provided with a transmission assembly, and the part of the main shaft positioned in the protective shell is in transmission connection with a rotating shaft of the revolution meter through the transmission assembly. The utility model has the characteristics of simple structure, easy operation, convenient use, low cost and the like; can measure repeatedly and adapt to complicated river course river condition, personnel need not be with the help of the survey ship, also need not contact the surface of water, have guaranteed the security of measurement. And is also suitable for the discontinuous measurement of various river sections.
Description
Technical Field
The utility model relates to a rivers velocity of flow measuring device especially relates to a river course rivers velocity of flow measuring device.
Background
River water flow velocity measurement has important significance for hydrological measurement, agricultural irrigation, flood control and fighting and river maintenance. Conventional river flow rate measurements typically require coordination of a survey vessel to obtain offshore flow rate data. The method has the defects of high running cost on one hand, and has higher difficulty in measurement operation due to difficulty in sailing for rivers with much weed and riprap at the water bottom on the other hand.
The chinese utility model with the authorization notice number of CN208654181U has just opened a "river course water flow velometer controlled by computer", and does not need the cooperation of the survey ship, avoids the influence of the survey ship itself on water flow, and reduces the measurement error. It mainly includes speed measuring system and computer; the speed measuring system comprises an impeller and a speed measuring motor, and an axle of the impeller is fixedly connected with a rotating shaft of the speed measuring motor; the unmanned gyroplane is characterized by further comprising a gyroplane, wherein the gyroplane suspends a rack through a rope, and a speed measuring motor is installed and fixed on the rack; be equipped with microprocessor and wireless communication ware on the rotor unmanned aerial vehicle, the motor that tests the speed passes through the wire and links to each other with microprocessor, and microprocessor passes through wireless communication ware and links to each other with the computer. It can be seen that the measuring device has high manufacturing and using cost and is difficult to popularize and use in a large area. Especially in remote areas where the economy is relatively low, it is not practical to use such devices at the present time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a rivers velocity of flow measuring device is provided, it has and makes and use cost is low, and application scope is wide and portable, easy operating characteristics.
The utility model discloses the technical scheme who adopts as follows:
a water flow velocity measuring device is characterized in that: the electronic stopwatch comprises a handle rod and a mounting rod, wherein an electronic stopwatch is mounted at the rear end of the handle rod, and a wing wheel is mounted at the front end of the mounting rod; a length adjusting rod is arranged between the handle rod and the mounting rod; the wing wheel comprises a protective shell, a revolution counter is fixedly arranged on the upper end surface of the protective shell, a main shaft is arranged in the protective shell, the main shaft extends out of the lower end surface of the protective shell, and an impeller is arranged on the extending part of the main shaft; the protective shell is also internally provided with a transmission assembly, and the part of the main shaft positioned in the protective shell is in transmission connection with a rotating shaft of the revolution meter through the transmission assembly.
Preferably, the front end of the mounting rod is fixedly provided with a connecting frame which is connected with the protective shell.
Preferably, the length adjusting rod and the handle rod are respectively provided with a positioning screw hole.
Preferably, a weight is installed in the protective case.
The utility model has the advantages as follows:
one, utilize the utility model discloses when implementing the velocity of flow measurement, the impeller rotates under the water impact, according to impeller revolution data and time of intaking, combines the relation coefficient k (the laboratory obtains in advance) of velocity of flow and wing wheel rotational speed s, calculates the river course average velocity of flow. The utility model has the characteristics of simple structure, easy operation, convenient use, low cost and the like; can measure repeatedly and adapt to complicated river course river condition, personnel need not be with the help of the survey ship, also need not contact the surface of water, have guaranteed the security of measurement. And is also suitable for the discontinuous measurement of various river sections.
When the telescopic rod mechanism is not used, the telescopic rod mechanism is folded, and only one section of length is needed after compression, so that the telescopic rod mechanism is convenient to carry.
Drawings
Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a wing wheel according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in fig. 1, the embodiment of the present invention includes a handle bar 6 and a mounting bar 4, an electronic stopwatch 7 is installed at the rear end of the handle bar 6, and a wing wheel 1 is installed at the front end of the mounting bar 4. Be provided with length adjustment pole 5 between handlebar 6 and the installation pole 4, length adjustment pole 5 is installed in handlebar 6 telescopically, and installation pole 4 is installed in length adjustment pole 5 telescopically, and handlebar 6, length adjustment pole 5 and installation pole 4 three constitute telescopic link mechanism jointly, adjust telescopic link mechanism's total length according to the offshore distance of measuring point. The length adjusting rod 5 and the handle rod 6 are respectively provided with a positioning screw hole 8, and the positioning screw is screwed in the positioning screw hole 8 to realize the length positioning of the telescopic rod mechanism, so that the axial or circumferential displacement between the rod and the rod is avoided.
As shown in fig. 2, the wing wheel 1 includes a casing 11, a revolution counter 2 is fixedly mounted on an upper end surface of the casing 11, a main shaft 14 is mounted in the casing 11, the main shaft 14 extends from a lower end surface of the casing 11, and an impeller 13 is mounted on the extending portion. The casing 11 is further provided with a transmission assembly 12 (such as an intermeshing gear train, a belt transmission assembly, etc.), and a portion of the spindle 14 located inside the casing 11 is in transmission connection with the rotating shaft of the revolution counter 2 through the transmission assembly 12. Under the drive of water flow, the impeller 13 rotates and drives the main shaft 14 to rotate, and the main shaft 14 drives the revolution counter 2 to work through the transmission component 12.
Since the transmission assembly 12 is generally disposed at one side of the casing 11, in order to keep the entire wing wheel 1 in a balanced state and ensure uniform radial stress of the main shaft 14, a counterweight 15 is fixedly mounted in the casing 11.
Still referring to fig. 1, a connecting frame 3 in the form of a cross is fixedly mounted at the front end of the mounting rod 4, and the connecting frame 3 is connected to the protective casing 11. Generally, a connecting ring is fixedly arranged on the upper side of the protective shell 11, and the connecting frame 3 is inserted into the connecting ring to realize the connection between the connecting frame 3 and the protective shell 11.
When the device is used, one end of the wing wheel is perpendicularly thrown into water facing the water flow direction, the impeller rotates under the impact of water flow, the average rotating speed s of the impeller is measured by recording the rotating speed n of the impeller and the throwing time t of the wing wheel into the water, the average flow velocity of the water flow is calculated according to the inherent linear relation between the average rotating speed s and the flow velocity v of the water flowing through the wing wheel, and the linear relation is measured by a laboratory method.
Measuring the flow velocity of water flowing through the wing wheel under the laboratory state
And calculating a relation coefficient k between the water flow speed v and the impeller rotating speed s. And after the device arrives at a measuring site, an electronic stopwatch, a wing wheel and a telescopic rod are assembled and installed. And stretching the three sections of the telescopic rods to the longest, adjusting the lower ends of the telescopic rods to ensure that the front surfaces of the wing wheels are opposite to the water flow direction, the water flow is vertical to the plane of the blades in the wing wheels, slowly throwing the wing wheels into the water, and starting timing. After the time t is measured, the wing wheel is slowly taken out of the water surface, and the number of turns n of the wing wheel is measured according to
And calculating the product ks of the average rotation speed s of the wing wheel and the relation coefficient k by using a formula, namely the average water flow speed v.
And (4) pressing a stopwatch to time, and recording the time for measuring the river flow velocity of the river channel once through manual triggering.
Claims (5)
1. A water flow velocity measuring device is characterized in that: the novel electronic clock comprises a handle lever (6) and a mounting lever (4), wherein an electronic stopwatch (7) is mounted at the rear end of the handle lever (6), and a wing wheel (1) is mounted at the front end of the mounting lever (4); a length adjusting rod (5) is arranged between the handle rod (6) and the mounting rod (4); the wing wheel (1) comprises a protective shell (11), a revolution counter (2) is fixedly mounted on the upper end face of the protective shell (11), a main shaft (14) is mounted in the protective shell (11), the main shaft (14) extends out of the lower end face of the protective shell (11), and an impeller (13) is mounted on the extending part; the protective shell (11) is also internally provided with a transmission assembly (12), and the part of the main shaft (14) positioned in the protective shell (11) is in transmission connection with the rotating shaft of the revolution counter (2) through the transmission assembly (12).
2. The water flow rate measuring device of claim 1, wherein: the front end of the mounting rod (4) is fixedly provided with a connecting frame (3), and the connecting frame (3) is connected with the protective shell (11).
3. The water flow rate measuring device according to claim 1 or 2, wherein: the length adjusting rod (5) and the handle rod (6) are respectively provided with a positioning screw hole (8).
4. The water flow rate measuring device according to claim 1 or 2, wherein: a balancing weight (15) is arranged in the protective shell (11).
5. The water flow rate measuring device of claim 3, wherein: a balancing weight (15) is arranged in the protective shell (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921258847.4U CN210037860U (en) | 2019-08-06 | 2019-08-06 | Water flow velocity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921258847.4U CN210037860U (en) | 2019-08-06 | 2019-08-06 | Water flow velocity measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210037860U true CN210037860U (en) | 2020-02-07 |
Family
ID=69350735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921258847.4U Expired - Fee Related CN210037860U (en) | 2019-08-06 | 2019-08-06 | Water flow velocity measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210037860U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289767A (en) * | 2020-03-25 | 2020-06-16 | 王君华 | High-precision water speed measuring device based on recyclable use of floating mark method |
| CN111812352A (en) * | 2020-07-08 | 2020-10-23 | 四川大学 | Novel flow velocity detection instrument for water conservancy measurement |
| CN113785682A (en) * | 2021-09-15 | 2021-12-14 | 湖南怡田美农业科技有限公司 | Nozzle and herbicide spraying device for synchronous transplanting of rice transplanter |
-
2019
- 2019-08-06 CN CN201921258847.4U patent/CN210037860U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289767A (en) * | 2020-03-25 | 2020-06-16 | 王君华 | High-precision water speed measuring device based on recyclable use of floating mark method |
| CN111812352A (en) * | 2020-07-08 | 2020-10-23 | 四川大学 | Novel flow velocity detection instrument for water conservancy measurement |
| CN113785682A (en) * | 2021-09-15 | 2021-12-14 | 湖南怡田美农业科技有限公司 | Nozzle and herbicide spraying device for synchronous transplanting of rice transplanter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20200806 |