CN113959380A - Open channel flow cross section area measuring device and measuring method based on section segmentation method - Google Patents
Open channel flow cross section area measuring device and measuring method based on section segmentation method Download PDFInfo
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- CN113959380A CN113959380A CN202111197471.2A CN202111197471A CN113959380A CN 113959380 A CN113959380 A CN 113959380A CN 202111197471 A CN202111197471 A CN 202111197471A CN 113959380 A CN113959380 A CN 113959380A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000011218 segmentation Effects 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000005259 measurement Methods 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims 1
- 230000002262 irrigation Effects 0.000 description 10
- 238000003973 irrigation Methods 0.000 description 10
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- 238000012423 maintenance Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D57/00—Vehicles characterised by having other propulsion or other ground- engaging means than wheels or endless track, alone or in addition to wheels or endless track
- B62D57/02—Vehicles characterised by having other propulsion or other ground- engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members
- B62D57/028—Vehicles characterised by having other propulsion or other ground- engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members having wheels and mechanical legs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
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Abstract
The invention discloses an open channel overflowing section area measuring device based on a section segmentation method, which comprises a horizontal flow measuring main board, wherein a movable remote control flow measuring trolley is fixed in the middle of the horizontal flow measuring main board, an ultrasonic sensor is fixed in the remote control flow measuring trolley, a level meter is further fixed on one surface of the horizontal flow measuring main board, one surface of the horizontal flow measuring main board is clamped with a U-shaped flow measuring auxiliary board, and two ends of the U-shaped flow measuring auxiliary board are clamped on the horizontal flow measuring main board. The invention also discloses a method for measuring the open channel flow cross section area based on the section segmentation method. The invention solves the problems of complex channel flow cross section area measuring process and low measuring result accuracy in the prior art.
Description
Technical Field
The invention belongs to the technical field of section area measurement, relates to an open channel flow cross section area measurement device based on a section segmentation method, and further relates to a measurement method based on the device.
Background
Water is an irreplaceable resource for human survival and is the basis of economic and social sustainable development. The development of irrigation areas can not leave reasonable control and optimized scheduling of water resources, water resources are deficient, the aging and seepage-proofing rates of water transmission and distribution projects are low, the field irrigation level is low, irrigation is unreasonable, and water resource waste is serious. Water-saving irrigation is imperative, quantitative control of water quantity is also a key problem at present, China has a large amount of water quantity measuring devices at present, most devices measure the flow of a water cross section based on a flow velocity area method, a large amount of research is basically carried out on the measurement of the flow velocity of the cross section, and some relatively mature flow velocity meters are generated, so that the process of water-saving irrigation of an irrigation area is accelerated. However, the construction standard of irrigation facilities in irrigation areas is low at present, investment and reconstruction and maintenance funds are insufficient, the facilities are not updated and maintained timely, part of buildings are seriously aged and overhauled, and a relatively accurate device and method for channel overflow section measurement cannot be formed, so that a certain error always exists in the measured flow, the monitoring accuracy of the section flow is further improved, and the effective promotion of water-saving irrigation is accelerated. How to develop a channel area measuring device with high automation degree, low price, stable performance and convenient carrying is important for flow measurement of an open channel and is also an important basis for implementing the strictest water resource management system in China.
On one hand, the traditional flow measurement method is to calculate the flow according to an empirical formula of a triangular weir under the condition of measuring the water level, which is time-consuming, labor-consuming and low in accuracy. The triangular weir baffle needs to be installed at the section of the water outlet, the triangular weir baffles with different specifications need to be replaced according to different flow rates during flow measurement, the contact surface between the triangular weir baffle and a channel needs to be ensured to be watertight, and the installation process is relatively complex. On the other hand, when the flow velocity is measured, the cross-sectional flow is further measured according to the area formula of the standard channel, but the channel cross section is not standardized, so that the flow measurement accuracy needs to be improved.
Disclosure of Invention
The invention aims to provide an open channel flow cross section area measuring device based on a cross section segmentation method, and solves the problems that the channel flow cross section area measuring process is complex and the accuracy of the measuring result is low in the prior art.
The technical scheme adopted by the invention is as follows:
open channel overflows section area measuring device based on section method of cutting apart, including horizontal current surveying mainboard, the centre of horizontal current surveying mainboard is fixed with mobilizable remote control current surveying dolly, and remote control current surveying dolly internal fixation has ultrasonic sensor, still is fixed with the spirit level on the one side of horizontal current surveying mainboard, and horizontal current surveying mainboard one side and U type current surveying subplate joint, the both ends joint of U type current surveying subplate is on horizontal current surveying mainboard.
The invention is also characterized in that:
the number of gradienters is two, and two gradienters are fixed respectively at the both ends of horizontal current surveying mainboard, and the direction mutually perpendicular of two gradienters.
The two ends of the horizontal flow measuring main plate are provided with elongated slots, and the two ends of the U-shaped flow measuring auxiliary plate are respectively clamped in the elongated slots.
Guide rails are fixed on two sides of the long groove, the remote control flow measuring trolley can slide on the guide rails through a driving motor, the driving motor is connected with a controller, the controller is further connected with an ultrasonic sensor, and the driving motor and the controller are fixed in the remote control flow measuring trolley.
The controller is also connected with a wireless transmission module, the wireless transmission module establishes a transmission relation with external remote control equipment, and the wireless transmission module is fixed in the remote control flow measurement trolley;
and a power supply is also fixed in the remote control current measuring trolley and respectively supplies power to the wireless transmission module, the driving motor and the controller.
The guide rail is a rack, coaxial gears are fixed at the front bottom and the rear bottom of the remote control flow measuring trolley, gears at two ends of each coaxial gear are respectively meshed with the racks at two sides of the square elongated slot, and a driving motor is fixed in the middle of a gear shaft of each coaxial gear.
The other technical scheme of the invention is as follows: the method for measuring the open channel flow cross section area based on the section segmentation method comprises the following specific steps:
firstly, placing the bottom of a U-shaped flow measuring auxiliary plate on the edge of the cross section of a channel to be overlapped, and then leveling and adjusting the position of the U-shaped flow measuring auxiliary plate in a square groove according to two gradienters until the two gradienters are both bubble-centered;
then, an external remote control device is used for moving the remote control flow measurement trolley for multiple times, the vertical distance from the bottom of the channel to the bottom surface of the horizontal main flow measurement plate and the vertical distance from the instantaneous water passing surface to the bottom surface of the horizontal main flow measurement plate are measured by the ultrasonic sensor at different positions and are transmitted to the controller, the controller obtains the area of the water passing section through calculation, and the calculation formula is as follows:
wherein: a is the cross-sectional area of water, H is the vertical distance between the lower surface of the remote-control flow measuring trolley and the bottom end of the U-shaped flow measuring auxiliary plate when the remote-control flow measuring trolley is centered, and H is the vertical distance between the lower surface of the remote-control flow measuring trolley and the bottom end of the U-shaped flow measuring auxiliary plate1-1、H1-2、H1-3、˙˙˙H1-nWhen the channel is not water, the remote control flow measuring trolley moves to L1、L2、L3、˙˙˙LnThe vertical distance H between the lower surface of the corresponding remote flow measuring trolley and the bottom end of the U-shaped flow measuring subplate2-1、H2-2、H2-3、˙˙˙H1-nWhen the channel is in water, the remote control flow measuring trolley moves to L1、L2、L3、˙˙˙LnThe vertical distance between the lower surface of the corresponding remote flow measuring trolley and the bottom end of the U-shaped flow measuring subplate.
The invention has the beneficial effects that:
the water passing section measuring device is novel and unique in structure, and the accurate detection of the water level on a measuring line of the channel section is completed by adopting the movable trolley to carry the ultrasonic sensor; the water level detection process of the whole channel is automated and intelligent, and only the device is correctly arranged above the channel, and the movable trolley is controlled by switching on the power supply, and relevant data are collected and transmitted and displayed in real time. The device simple structure, power consumption is low, portable, the installation cost is low, can realize the wireless transmission of data, effectively implements the profound meaning to irrigated area water conservation irrigation.
Drawings
FIG. 1 is a structural diagram of an open channel flow cross-section area measuring device based on a section division method;
fig. 2 is a structural diagram of a remote flow measuring trolley in the open channel flow cross section area measuring device based on a section division method.
In the figure: the device comprises a U-shaped current measuring auxiliary plate, a water level current measuring main plate, a guide rail, a remote control current measuring trolley, an external remote control device, a level meter, a controller, a coaxial gear, a driving motor, an ultrasonic sensor and a wireless transmission module, wherein the U-shaped current measuring auxiliary plate is 2, the water level current measuring main plate is 3, the guide rail is 4, the remote control current measuring trolley is 5, the external remote control device is 6, the level meter is 7, the controller is 8, the coaxial gear is 9, the driving motor is 10, and the wireless transmission module is 11.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
An open channel flow cross section area measuring device based on a section division method is shown in figure 1 and comprises a horizontal flow measuring main board 2, a movable remote control flow measuring trolley 4 is fixed in the middle of the horizontal flow measuring main board 2, an ultrasonic sensor 10 is fixed in the remote control flow measuring trolley 4, a level gauge 6 is further fixed on one surface of the horizontal flow measuring main board 2, one surface of the horizontal flow measuring main board 2 is clamped with a U-shaped flow measuring auxiliary board 1, square grooves are formed in two ends of the horizontal flow measuring main board 2, two ends of the U-shaped flow measuring auxiliary board 1 are respectively clamped in the square grooves, guide rails 3 are fixed on two sides of each square long groove, the remote control flow measuring trolley 4 can slide on the guide rails 3 through a driving motor 9, the driving motor 9 is connected with a controller 7, the controller 7 is further connected with the ultrasonic sensor 10, the driving motor 9 and the controller 7 are both fixed in the remote control flow measuring trolley 4, the controller 7 is further connected with a wireless transmission module 11, the wireless transmission module 11 also establishes a transmission relation with the external remote control equipment 5, and the wireless transmission module 11 is fixed in the remote control flow measurement trolley 4;
the guide rail 3 is a rack, coaxial gears 8 are fixed at the front bottom and the rear bottom of the remote control flow measuring trolley 4, gears at two ends of each coaxial gear 8 are respectively meshed with the racks at two sides of the square elongated slot, and a driving motor 9 is fixed in the middle of a gear shaft of each coaxial gear 8.
The number of the gradienters 6 is two, the two gradienters 6 are respectively fixed at two ends of the horizontal flow measuring main board 2, and the directions of the two gradienters 6 are mutually vertical.
And a power supply is also fixed in the remote control current measuring trolley 4 and respectively supplies power to the wireless transmission module 11, the driving motor 9 and the controller 7.
The method for measuring the open channel flow cross section area based on the section segmentation method comprises the following specific steps:
firstly, placing the bottom of a U-shaped flow measuring auxiliary plate 1 on the edge of the cross section of a channel to be overlapped, and then leveling and adjusting the position of the U-shaped flow measuring auxiliary plate 1 in a square groove according to two gradienters 6 until the two gradienters 6 are both bubble-centered;
then, the remote control flow measuring trolley 4 is moved for many times by using an external remote control device 5, the vertical distance from the bottom of the channel to the bottom surface of the horizontal main flow measuring plate and the vertical distance from the instantaneous water passing surface to the bottom surface of the horizontal main flow measuring plate at different positions are measured by an ultrasonic sensor 10 and transmitted to a controller 7, the controller obtains the area of the water passing section through calculation, and the calculation formula is as follows:
wherein: a is the cross-sectional area of water, H is the vertical distance between the lower surface of the remote-control flow measuring trolley 4 and the bottom end of the U-shaped flow measuring auxiliary plate 1 when the remote-control flow measuring trolley is centered, and H is1-1、H1-2、H1-3、˙˙˙H1-nWhen the channel is not water, the remote control flow measuring trolley 4 moves to L1、L2、L3、˙˙˙LnThe vertical distance H between the lower surface of the corresponding remote control flow measuring trolley 4 and the bottom end of the U-shaped flow measuring subplate 12-1、H2-2、H2-3、˙˙˙H1-nFor channelsWhen the water flows, the remote control flow measuring trolley 4 moves to L1、L2、L3、˙˙˙LnThe vertical distance between the lower surface of the corresponding remote control flow measuring trolley 4 and the bottom end of the U-shaped flow measuring subplate 1.
Claims (7)
1. Open channel overflows section area measuring device based on section partition method, its characterized in that, including horizontal current surveying mainboard (2), the centre of horizontal current surveying mainboard (2) is fixed with mobilizable remote control current surveying dolly (4), remote control current surveying dolly (4) internal fixation has ultrasonic sensor (10), still be fixed with spirit level (6) on the one side of horizontal current surveying mainboard (2), horizontal current surveying mainboard (2) one side and U type current surveying subplate (1) joint, the both ends joint of U type current surveying subplate (1) is on horizontal current surveying mainboard (2).
2. The open channel flow cross-section area measuring device based on the section division method as claimed in claim 1, wherein the number of the gradienters (6) is two, the two gradienters (6) are respectively fixed at two ends of the horizontal flow measuring main plate (2), and the directions of the two gradienters (6) are mutually vertical.
3. The open channel flow cross-section area measuring device based on the section division method as claimed in claim 1, wherein the two ends of the horizontal flow measuring main plate (2) are provided with elongated slots, and the two ends of the U-shaped flow measuring sub-plate (1) are respectively clamped in the elongated slots.
4. The device for measuring the open channel flow cross-section area based on the section segmentation method is characterized in that guide rails (3) are fixed on two sides of each long groove, the remote control flow measurement trolley (4) can slide on the guide rails (3) through a driving motor (9), the driving motor (9) is connected with a controller (7), the controller (7) is further connected with an ultrasonic sensor (10), and the driving motor (9) and the controller (7) are both fixed in the remote control flow measurement trolley (4).
5. The device for measuring the open channel flow cross-section area based on the cross-section segmentation method is characterized in that the controller (7) is further connected with a wireless transmission module (11), the wireless transmission module (11) is connected with an external remote control device (5) to establish a transmission relation, and the wireless transmission module (11) is fixed in the remote control flow measuring trolley (4);
and a power supply is also fixed in the remote control current measuring trolley (4), and the power supply is used for supplying power to the wireless transmission module (11), the driving motor (9) and the controller (7) respectively.
6. The device for measuring the open channel flow cross-section area based on the section segmentation method is characterized in that the guide rail (3) is a rack, coaxial gears (8) are fixed at the front bottom and the rear bottom of the remote control flow measuring trolley (4), gears at two ends of each coaxial gear (8) are respectively meshed with the racks at two sides of a square elongated slot, and a driving motor (9) is fixed in the middle of a gear shaft of each coaxial gear (8).
7. The method for measuring the open channel flow cross section area based on the section segmentation method is characterized in that the device for measuring the open channel flow cross section area based on the section segmentation method according to claim 6 is adopted, and the method comprises the following specific steps:
firstly, placing the bottom of a U-shaped flow measuring auxiliary plate (1) to the edge of the cross section of a channel to be overlapped, and then leveling and adjusting the position of the U-shaped flow measuring auxiliary plate (1) in a square groove according to two gradienters (6) until the two gradienters (6) are both bubble-centered;
then, an external remote control device (5) is used for moving the remote control flow measuring trolley (4) for multiple times, the vertical distance from the bottom of the channel to the bottom surface of the horizontal main flow measuring plate and the vertical distance from the instantaneous water passing surface to the bottom surface of the horizontal main flow measuring plate are measured through the ultrasonic sensor (10) and transmitted to the controller (7), the controller obtains the area of the water passing section through calculation, and the calculation formula is as follows:
wherein: a is the cross-sectional area of water passing, H is the remote control flow measurement is smallThe vertical distance H between the lower surface of the car (4) and the bottom end of the U-shaped flow measuring auxiliary plate (1) when the car is placed in the middle1-1、H1-2、H1-3、˙˙˙H1-nWhen the channel is not water, the remote control flow measuring trolley (4) moves to L1、L2、L3、˙˙˙LnThe vertical distance H between the lower surface of the corresponding remote flow measuring trolley (4) and the bottom end of the U-shaped flow measuring subplate (1)2-1、H2-2、H2-3、˙˙˙H1-nWhen the channel is in water, the remote control flow measuring trolley (4) moves to L1、L2、L3、˙˙˙LnThe vertical distance between the lower surface of the corresponding remote flow measuring trolley (4) and the bottom end of the U-shaped flow measuring subplate (1) is measured.
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Cited By (1)
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