CN215952663U - Real-time online flow measuring device for open channel - Google Patents
Real-time online flow measuring device for open channel Download PDFInfo
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- CN215952663U CN215952663U CN202122295426.2U CN202122295426U CN215952663U CN 215952663 U CN215952663 U CN 215952663U CN 202122295426 U CN202122295426 U CN 202122295426U CN 215952663 U CN215952663 U CN 215952663U
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Abstract
The utility model relates to a real-time online flow measuring device for an open channel, and belongs to the technical field of water conservancy monitoring. The technical scheme is as follows: a flow measurement device host (1) is arranged on a measuring bridge (11) of an open channel (10), a counterweight flow velocity sensor (7) is connected to the lower surface of the flow measurement device host (1) through a sling (6), and the counterweight flow velocity sensor (7) measures flow along a flow measurement vertical line under the water surface; the solar cell panel (2) is arranged on the flow measuring device host (1) through the support (3), and the radar wave Doppler flow measuring instrument (9) is arranged towards the water surface of the channel to carry out non-contact flow measurement. The utility model has the beneficial effects that: the method can realize real-time online flow measurement of the open channel, correct flow measurement errors in time, reduce energy consumption, and provide enough power supply for a solar power supply system carried by the system, so that the system structure is simplified; meanwhile, a walking device in the original system is omitted, the system is simplified, the cost is low, the failure rate is low, and the configuration is flexible.
Description
Technical Field
The utility model relates to a real-time online flow measuring device for an open channel, and belongs to the technical field of water conservancy monitoring.
Background
At present, a large number of flow velocity meters are used for open channel flow measurement in the water conservancy industry, and the common method is as follows: dividing the water delivery section into a plurality of flow measuring points along the horizontal direction, wherein each flow measuring point corresponds to a flow measuring vertical line, calculating the flow velocity of each measuring point on each flow measuring vertical line according to a certain rule to be used as the average flow velocity of the flow measuring vertical line, calculating the average flow velocity of all the flow measuring vertical lines according to a certain rule to be used as the average flow velocity of the water delivery section, measuring the siltation at the bottom of each flow measuring vertical line, calculating the water delivery section, and obtaining the product of the water delivery section and the average flow velocity as the water delivery flow. There are problems in that: the flow measurement method has the advantages that time and labor are wasted, synchronous measurement cannot be realized, the flow measurement time of each flow measurement point is different, the corresponding flow state is different, the flow velocity field is in continuous change, the flow measurement precision is seriously influenced by the flow measurement mode, and meanwhile, the unattended automatic flow measurement cannot be realized by the prior art. The above technical problems are solved by the applicant's chinese patent application 202022291276.3 "an integrated hanging perpendicular flow measuring system" and 202121493504.3 "an integrated flow measuring instrument sailing type traction device", but the working standard of the patent application is as follows: a plurality of flow measuring vertical lines, such as 3, 5, 7 and 9 vertical lines, are arranged on the flow measuring section of the channel, and each vertical line is provided with a plurality of layers of measuring points, such as 1-7 measuring points; the weight of the used counterweight flow velocity sensor is ten to dozens of kilograms, so that once sailing and flow measurement are completed, the required time and the required electric quantity of solar power supply are very large, so that the technology of the patent application cannot frequently and frequently work, for example, when 7 vertical lines are arranged, a flow measuring device needs to work for 7 times, the required energy consumption is very large, and the patent application cannot realize real-time online flow measurement; in practical application, flow measurement can be performed twice a day, and the requirement of real-time online flow measurement cannot be met at all. Therefore, how to more efficiently utilize the applied technology to realize real-time online flow measurement is a technical problem to be solved in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a real-time online flow measurement device for an open channel, which can realize real-time online flow measurement of the open channel, correct flow measurement errors in time and reduce energy consumption, and a solar power supply system carried by the device can provide enough power so as to simplify the structure of the system; meanwhile, a walking device in the original system is omitted, the system is simplified, the cost is low, the failure rate is low, the configuration is flexible, and the technical problems in the prior art are solved.
The technical scheme of the utility model is as follows:
a real-time online flow measuring device for an open channel comprises a flow measuring device host, a solar cell panel, a sling, a counterweight flow velocity sensor and a radar wave Doppler flow meter, wherein the flow measuring device host is arranged on a measuring bridge of the open channel, the lower surface of the flow measuring device host is connected with the counterweight flow velocity sensor through the sling, and the counterweight flow velocity sensor carries out flow measurement along a flow measuring vertical line under the water surface; the flow measuring device host is provided with a solar cell panel through a support, and the radar wave Doppler flow measuring instrument is arranged towards the water surface of the channel to carry out non-contact flow measurement.
The bridge railing of the measuring bridge is provided with a sliding rail which is horizontally arranged, the main machine of the flow measuring device is provided with a pulley which is matched with the sliding rail, and the main machine of the flow measuring device can be adjusted in the horizontal direction along the sliding rail.
The radar wave Doppler current meter is arranged on a main machine of the current measuring device through a bracket, or the radar wave Doppler current meter is directly arranged on a central line of the open channel, namely the central line of the measuring bridge.
And the measuring bridge is provided with a navigation traction cable, and a host of the traction flow measuring device moves in the horizontal direction to measure the navigation flow.
The sailing traction cable is arranged on two banks of the open channel, and a solar sailing device field protection box and a sailing cable tensioning field protection box are respectively arranged at two ends of the sailing traction cable.
And a lower wall leaning wheel is arranged between the main machine of the flow measuring device and the measuring bridge, and the position angle of the main machine of the flow measuring device is adjusted.
On the basis of the original 202022291276.3 patent application of the applicant, the utility model adds a radar wave Doppler current meter facing the water surface of the channel to carry out non-contact current measurement; 202022291276.3 patent application, wherein the counter weight flow velocity sensor is used as flow precision calibration equipment, and the radar wave Doppler current meter is used as real-time on-line flow monitoring equipment; 202022291276.3 patent application, the main machine of the flow measuring device provides average flow velocity, water level, water delivery section and flow, and the radar wave Doppler flow meter monitors the central flow velocity and the central water level of the channel surface, and determines the corresponding relation between the central flow velocity of the channel surface and the average flow velocity of the channel; measuring the flow with multiple vertical lines according to the requirement of 'irrigation channel system water gaging Specification' GB/T21303-2015, obtaining the average flow velocity of the channel and the relation between the central flow velocity of the surface of the channel and the average flow velocity of the channel, and obtaining the corresponding average flow velocity of the channel by measuring the central flow velocity of the surface of the channel in real time; under the condition that the water delivery sections are the same, the flow is calculated by a flow velocity area method, and the real-time on-line automatic flow measurement of the water delivery sections is realized.
And if the water level of the channel jumps or the flow velocity jumps, the channel walks and measures the flow again to obtain a new relation between the surface center flow velocity and the channel average flow velocity.
The radar wave Doppler current meter comprises a radar wave Doppler flow velocity sensor, a water level sensor and a waterproof shell, wherein the radar wave Doppler flow velocity sensor and the water level sensor are all known devices in the field. The radar wave Doppler flow velocity sensor is a flow measuring instrument made by applying the acoustic Doppler effect principle, and the measuring point is in front of a probe, so that the flow field is not damaged.
The radar wave Doppler current meter can also be arranged on the current measuring device host, and horizontally walks along the cross section of the open channel together with the current measuring device host, and returns to the central line of the open channel for current measurement when the current measurement is needed to be carried out on the center of the channel surface; the advantage is that the direct power connection that provides with the solar cell panel of flow measurement device host computer, and the wiring is convenient, and the shortcoming is that need get back to the central line of open channel at every turn and carry out the flow measurement. The radar wave Doppler current meter can be directly arranged on a central line of the open channel (on a central line of the measuring bridge) to measure the current of the surface center of the channel; the advantage does not need to remove, directly carries out the current surveying on the central line of open channel, and the shortcoming is because in the field, radar wave doppler current meter needs to be connected with the current surveying device host computer power that removes through power supply circuit, and the wiring is inconvenient, or need set up independent power for radar wave doppler current meter on the measuring bridge.
The utility model has the beneficial effects that:
the method can realize the simultaneous flow measurement of multiple vertical lines on the water delivery section, and can ensure that data caused by different time points and different flow state flow measurement modes when the original multiple vertical lines measure the flow one by one have no correlation with each other, thereby causing the irregularity of flow measurement errors and solving the problem that the flow measurement errors are not corrected. The traditional multi-plumb line one-by-one flow measuring mode is adopted, for example, when 7 plumb lines are arranged, a flow measuring device needs to work for 7 times, the required energy consumption is very high, the 7 integrated hanging plumb line flow measuring instruments are adopted, the flow is synchronously measured under the same flow state of a water delivery section, each device only works once, the required energy consumption is only one seventh of that of the traditional system, a solar power supply system carried by the device can provide enough power, the system structure is simplified, and huge energy devices in the traditional system are omitted. And a walking device in the original system is omitted, the system is simplified, the cost is low, the failure rate is low, and the configuration is flexible. And fourthly, only field anti-theft boxes are arranged on two sides of the channel, so that a measuring room and a measuring bridge are not required to be built, and the investment is greatly reduced.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention;
FIG. 2 is a side view of an embodiment of the present invention;
in the figure: the device comprises a flow measuring device host 1, a solar cell panel 2, a support 3, a pulley 4, a slide rail 5, a sling 6, a counterweight flow velocity sensor 7, a lower wall-leaning wheel 8, a radar wave Doppler flow meter 9, an open channel 10, a bridge 11, a bridge fence 12, a bridge column 13, a channel water flow direction 14, a navigation traction cable 15, a solar navigation device field protection box 16 and a navigation cable tensioning field protection box 17.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings.
A real-time online flow measuring device for an open channel comprises a flow measuring device host 1, a solar cell panel 2, a sling 6, a counterweight flow velocity sensor 7 and a radar wave Doppler flow meter 9, wherein the flow measuring device host 1 is arranged on a measuring bridge 11 of the open channel 10, the lower surface of the flow measuring device host 1 is connected with the counterweight flow velocity sensor 7 through the sling 6, and the counterweight flow velocity sensor 7 measures flow under the water surface along a flow measuring vertical line; the flow measuring device host 1 is provided with a solar cell panel 2 through a support 3, and the radar wave Doppler flow measuring instrument is arranged towards the water surface of the channel to carry out non-contact flow measurement.
The bridge rail 12 of the measuring bridge 11 is provided with a slide rail 5 which is horizontally arranged, the flow measuring device host 1 is provided with a pulley 4 which is matched with the slide rail 5, and the flow measuring device host 1 can be adjusted along the slide rail 5 in the horizontal direction.
The radar wave Doppler current meter 9 is arranged on a main machine of the current measuring device through the bracket 3, or the radar wave Doppler current meter is directly arranged on a central line of the open channel, namely the central line of the measuring bridge.
The survey bridge 11 is provided with a navigation traction cable 15, and the traction flow measurement device host 1 moves in the horizontal direction to measure the navigation flow.
The sailing traction cable 15 is arranged on two banks of the open channel, and a solar sailing device field protection box 16 and a sailing cable tensioning field protection box 17 are respectively arranged at two ends of the sailing traction cable.
And a lower wall-leaning wheel 8 is arranged between the flow measuring device host 1 and the measuring bridge 11, and the position angle of the flow measuring device host 1 is adjusted.
In the embodiment, the radar wave doppler current meter is matched at the lower part of the current measuring device host 1 and fixed by the bracket 3, the solar cell panel 2 of the current measuring device host 1 provides power supply, and the signal cable of the radar wave doppler current meter is connected with the current measuring device host 1.
The flow measuring method comprises the following steps:
firstly, the flow measuring mode is sailing flow measurement, the number of vertical lines of a flow measuring section is odd, multi-vertical-line flow measurement is realized according to a water measuring specification, a sailing flow measuring mode is set remotely, the automatic return to the center line of a channel is finished during sailing, and meanwhile, a radar wave Doppler flow meter synchronously monitors the surface center flow velocity of the flow measuring section;
secondly, when the navigation flow measurement is finished, the flow measurement device host 1 stops in the middle of the channel, the relation between the middle flow velocity on the surface of the channel and the average flow velocity is obtained through self-learning, and the real-time flow measurement can be realized through measuring the middle flow velocity on the surface of the channel in real time;
measuring the central flow velocity of the channel surface in real time on line to obtain the corresponding average flow velocity;
automatically starting the navigation flow measurement when the flow velocity changes or the water level changes to obtain a new relationship between the central flow velocity of the channel surface and the average flow velocity;
during the period of silting the water in the channel, the sailing and flow measurement are needed for at most two days;
when the water drainage is finished and the fault, maintenance and cleaning are needed, returning to the shore under manual control;
its advantage does: the sailing type vertical flow meter is used for calibrating the flow precision of the radar wave Doppler flow meter, the radar wave Doppler flow meter adopts non-contact flow measurement and does not relate to floats, and the real-time online flow measurement of channels can be realized by utilizing the characteristics of the radar wave Doppler flow meter.
Claims (4)
1. The utility model provides a real-time online flow measuring device of open channel which characterized in that: the flow measurement device comprises a flow measurement device host (1), a solar cell panel (2), a sling (6), a counterweight flow velocity sensor (7) and a radar wave Doppler flow meter (9), wherein the flow measurement device host (1) is arranged on a measuring bridge (11) of an open channel (10), the lower surface of the flow measurement device host (1) is connected with the counterweight flow velocity sensor (7) through the sling (6), and the counterweight flow velocity sensor (7) measures flow under the water surface along a flow measurement vertical line; the solar cell panel (2) is arranged on the flow measuring device host (1) through the support (3), and the radar wave Doppler flow measuring instrument (9) is arranged towards the water surface of the channel to carry out non-contact flow measurement.
2. The open channel real-time online flow measuring device according to claim 1, characterized in that: the bridge railing (12) of the measuring bridge (11) is provided with a sliding rail (5) which is horizontally arranged, the main machine (1) of the flow measuring device is provided with a pulley (4) which is matched with the sliding rail (5), and the main machine (1) of the flow measuring device can be adjusted in the horizontal direction along the sliding rail (5).
3. The open channel real-time online flow measuring device according to claim 1 or 2, characterized in that: the radar wave Doppler current meter (9) is arranged on a current measuring device host through a bracket (3).
4. The open channel real-time online flow measuring device according to claim 1 or 2, characterized in that: the radar wave Doppler current meter (9) is directly arranged on the central line of the open channel, namely the central line of the measuring bridge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122295426.2U CN215952663U (en) | 2021-09-23 | 2021-09-23 | Real-time online flow measuring device for open channel |
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| CN202122295426.2U CN215952663U (en) | 2021-09-23 | 2021-09-23 | Real-time online flow measuring device for open channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834537A (en) * | 2021-09-23 | 2021-12-24 | 唐山现代工控技术有限公司 | Real-time online flow measuring device and method for open channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834537A (en) * | 2021-09-23 | 2021-12-24 | 唐山现代工控技术有限公司 | Real-time online flow measuring device and method for open channel |
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