Movable riverway water flow air-entrainment degree measuring device
Through the designed active river water flow doping measurement device, the combination of strain films and activity rods solves the complex and cumbersome problems of mixing concentration in existing technologies, and achieves efficient and accurate gas mixing concentration measurements.
Patent Information
- Application Number
- CN202420050893.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-01-09
AI Technical Summary
In the prior art, the measurement method of air admixture concentration is complex and cumbersome, and it is difficult to measure efficiently at different locations.
The active river water flow doping measurement device is designed. By putting the strain film on the active rod, the gas doping concentration measurement at different positions is achieved, and the measurement process is simplified to the measuring concentration instrument through the wire.
This device can save the consumption of the sensor's demeanor, and achieve accurate gas doping concentration measurement through lower costs, and because the strain film is close to the side of the rod to avoid the risk of being damaged by the water.
Smart Images
Figure CN222420069U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a movable river water flow aeration degree measuring device, belonging to the field of water conservancy. Background Art
[0002] Aeration often occurs in water jumps, falling water flows, jet flows and high-speed open channel flows. Aeration concentration is an important hydraulic parameter in aerated water flows. The basic method for measuring aeration concentration is the sampling method, which generally uses a negative pressure sampler, and then separates the water and gas in the sample, measures the air volume and water volume respectively, and obtains the aeration concentration according to the definition. The sampling method is accurate, but the equipment is complex and the measurement process is cumbersome. Utility Model Content
[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a movable river water flow aeration measurement device, in which a strain gauge is attached to a movable measuring rod, and the measuring rod can be moved to measure the aeration concentration at different positions, thereby saving the consumption of the sensor strain gauge.
[0004] Technical solution: In order to solve the above technical problems, the utility model provides a movable river water flow aeration measurement device, including an aeration concentration meter, which is connected to a sensor through a wire, and the sensor is fixedly mounted on a movable measuring rod; the movable measuring rod is L-shaped, the sensor is located at the tail of the movable measuring rod, and the wire passes through one end of the movable measuring rod to be connected to the sensor; the movable measuring rod is a telescopic rod, and the movable measuring rod includes a main body and a movable unit, the main body is provided with a groove, one end of the movable unit is located in the groove, a locking bolt is provided on the main body, and a scale is provided on the movable unit, and when the movable unit is adjusted to an appropriate length, it is locked by the locking bolt.
[0005] Preferably, the sensor is a strain gauge, which is composed of a resistor sheet and a hard thin sheet.
[0006] Preferably, one end of the wire is connected to the sensor resistor and fixed along the handle of the movable measuring rod, and the other end is connected to the wire interface of the aeration concentration meter.
[0007] Preferably, a rotating wheel is installed on the movable unit, and the wire enters the movable unit through the rotating wheel.
[0008] Preferably, the aeration concentration meter is provided with a power switch, a measuring knob, a full-scale knob, a zero adjustment knob, a clean water zero adjustment knob, a channel button, an integral time display screen and a panel display screen. After the aeration concentration meter is powered on, the full-scale button on the instrument panel is first pressed, and then the power is turned on to preheat the entire device for 20 minutes. Under normal circumstances, the panel display screen displays 100.0 and flashes once per second. Then, the sensor strain gauge is placed in the clean water environment for testing, and the "channel" button to which the sensor to be tested is connected is pressed. Then, the "zero adjustment" button on the instrument panel is pressed, and the "clean water zero adjustment resistance" knob of the corresponding channel is adjusted so that the panel display screen shows "0.0". Then, the integral time is selected, and the integral time is set to 10 seconds. Finally, the sensor is placed in the flowing water to be tested, and the "measurement" button on the instrument panel is pressed to measure the aeration concentration.
[0009] In the utility model, the movable measuring rod: as a support for the strain gauge of the sensor, it can move freely to measure the aeration concentration; the sensor: is a very thin strain gauge, which is composed of an extremely thin resistor and a hard sheet. The resistor will also change according to the change of the aeration concentration in the water; the wire: one end of the wire is connected to the sensor resistor and fixed along the handle of the movable measuring rod, and the other end is connected to the wire interface of the aeration concentration meter; the aeration concentration meter: after the wire is connected, the aeration concentration value of the measuring position can be obtained on the display screen after preparation; the measuring knob: the aeration value can be obtained on the display screen by pressing the measuring knob Concentration value; Full scale knob: Press the full scale knob to forcibly set the aeration value in the display screen to 100.0; Zero adjustment knob: Press the zero adjustment knob, the instrument enters the measurement state, tests the measurement channel, and averages the aeration amount at a fixed time interval; Clean water zero adjustment knob: Manually adjust the clean water resistance of the test channel, and its resistance can be changed by rotating the knob clockwise or counterclockwise; Channel button: Press the channel button to test the test channel; Integration time display: You can select the averaging period of aeration measurement and the interval time for data display; Panel display: Displays the measured aeration concentration value.
[0010] In the utility model, the front end of the movable measuring rod is a triangular pyramid, and the tip is longer to reduce the resistance to the water flow, and the connection between the triangular pyramid and the rod end should be smooth. The strain gauge of the sensor should be close to the side of the movable measuring rod to prevent it from being damaged by water. The connecting wire is relatively thin, and it cannot be pulled hard during measurement, which will damage the wire and cause poor contact. When performing aeration measurement, the sensor must be placed in clean water for full scale and zero adjustment. Before turning on the power of the instrument, the full scale calibration is performed so that the value displayed on the display is 100, and the full scale calibration must be performed before each formal measurement. After turning on the power of the aeration concentration meter, it is necessary to wait for a period of time to allow the entire measurement channel to warm up. When zeroing, press the zero adjustment knob first, and then rotate the clean water zero adjustment knob to make the value on the display 0.0. The three knobs of measurement, full scale, and zero adjustment cannot be pressed or popped out at the same time. The integration time cannot be selected as 0, otherwise the machine will be damaged. The clean water zero adjustment knob cannot be adjusted too fast when rotating, and the direction should be changed immediately when one direction is blocked. The value shown in the panel display is the percentage concentration.
[0011] Beneficial effects: The movable river water flow aeration measurement device of the utility model attaches a strain gauge to a movable measuring rod, and the measuring rod can be moved to measure the aeration concentration at different positions, which can save the consumption of the sensor strain gauge. Although the flow state of the water flow will be slightly changed when the measuring rod is placed in the water flow to measure the aeration concentration, the strain gauge closely attached to the measuring rod is completely extended below the water surface, which will not change the aeration concentration of the measured water flow. Therefore, the device can accurately measure the aeration concentration in the river channel at a lower cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0013] The utility model is further described below in conjunction with the accompanying drawings.
[0014] like Figure 1As shown, the utility model is a movable river water flow aeration measurement device, including an aeration concentration meter 4, the aeration concentration meter 4 is connected to the sensor 2 through the wire 3, and the sensor 2 is fixedly mounted on the movable measuring rod 1; the movable measuring rod 1 is L-shaped, the sensor 2 is located at the tail of the movable measuring rod 1, and the wire 3 passes through the movable measuring rod 1 from one end of the movable measuring rod 1 and is connected to the sensor 2; the movable measuring rod 1 is a telescopic rod, and the movable measuring rod 1 includes a body and a movable unit, the body is provided with a groove, one end of the movable unit is located in the groove, a locking bolt is provided on the body, and a scale is provided on the movable unit. When the movable unit is adjusted to a suitable length, it is locked by the locking bolt. After the aeration concentration meter 4 is powered on, first press the full scale button on the instrument panel, and then turn on the power to preheat the entire device for about 20 minutes. Under normal circumstances, the display window shows 100.0, and it flashes once per second. Then put the strain gauge of sensor 2 into the clean water environment for testing, press the "channel" button connected to the sensor 2 to be tested, and then press the "zero adjustment" button on the instrument panel to adjust the "clean water zero adjustment resistance" knob of the corresponding channel so that the "display window" shows "0.0". Then select the integration time, which is generally set to 10 seconds. Finally, place sensor 2 in the flowing water to be tested, press the "measurement" button on the instrument panel to measure the aeration concentration.
[0015] In the utility model, the movable measuring rod 1: as a support for the strain gauge of the sensor 2, it can move freely to measure the aeration concentration. The sensor 2: is a very thin strain gauge, which is composed of an extremely thin resistor and a hard sheet. The resistor will also change according to the change of the aeration concentration in the water. The wire 3: one end of the wire 3 is connected to the resistor of the sensor 2, and is fixed along the handle of the movable measuring rod 1, and the other end is connected to the wire 3 interface of the aeration concentration meter 4. The aeration concentration meter 4: after connecting the wire 3, the aeration concentration value of the measuring position can be obtained on the display screen after preparation. Power supply: power switch 5. Measuring knob 6: pressing the measuring knob 6 will obtain the aeration concentration value on the display screen. Full scale knob 7: pressing the full scale knob 7 can forcibly set the aeration value on the display screen to 100.0. Zero adjustment knob 8: pressing the zero adjustment knob 8, the instrument enters the measurement state, tests the measurement channel, and averages the aeration amount at a fixed time interval. Clean water zero adjustment knob 9: Manually adjust the clean water resistance of the test channel. The resistance can be changed by rotating the knob clockwise or counterclockwise. Channel button 10: Press the channel button 10 to test the test channel. Integration time display 11: The average time period of the aeration measurement and the interval time of the data display can be selected. Panel display 12: Displays the measured aeration concentration value.
[0016] In the utility model, the front end of the movable measuring rod 1 is a triangular pyramid with a long tip to reduce the resistance to water flow, and the connection between the triangular pyramid and the rod end should be smooth. The strain gauge of the sensor 2 should be close to the side of the movable measuring rod 1 to prevent it from being damaged by water. The connecting wire 3 is relatively thin, and it cannot be pulled hard during measurement, which will damage the wire 3 and cause poor contact. When performing aeration measurement, the sensor 2 must be placed in clean water for full scale and zero adjustment. Before turning on the power of the instrument, the full scale calibration is performed so that the value displayed on the display is 100, and the full scale calibration must be performed before each formal measurement. After turning on the power of the aeration concentration meter 4, it is necessary to wait for a while to allow the entire measurement channel to warm up. When zeroing, press the zero adjustment knob 8 first, and then rotate the clean water zero adjustment knob 9 to make the value on the display 0.0. The three knobs of measurement, full scale, and zero adjustment cannot be pressed or popped out at the same time. The integration time cannot be selected as 0, otherwise the machine will be damaged. The water zero adjustment knob 9 should not be adjusted too fast when rotating. If one direction is blocked, the direction should be changed immediately. The value displayed on the panel display 12 is the percentage concentration.
[0017] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A movable device for measuring aeration of river water flow, characterized in that: It includes an aeration concentration meter, which is connected to a sensor via a wire, and the sensor is fixedly mounted on a movable measuring rod; the movable measuring rod is L-shaped, the sensor is located at the tail of the movable measuring rod, and the wire passes through one end of the movable measuring rod and is connected to the sensor; the movable measuring rod is a telescopic rod, and the movable measuring rod includes a main body and a movable unit, the main body is provided with a groove, one end of the movable unit is located in the groove, a locking bolt is provided on the main body, and a scale is provided on the movable unit, and when the movable unit is adjusted to a suitable length, it is locked by the locking bolt.
2. The movable river water flow aeration measurement device according to claim 1 is characterized in that: The sensor is a strain gauge, which is composed of a resistor sheet and a hard thin sheet.
3. The movable river water flow aeration measurement device according to claim 1 is characterized in that: One end of the wire is connected to the sensor resistor and is fixed along the handle of the movable measuring rod, while the other end is connected to the wire interface of the aeration concentration meter.
4. The movable river water flow aeration measurement device according to claim 3 is characterized in that: A rotating wheel is installed on the movable unit, and the wire enters the movable unit through the rotating wheel.