CN211317419U - Bright channel reducing pendulum rod current surveying appearance of using - Google Patents
Bright channel reducing pendulum rod current surveying appearance of using Download PDFInfo
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- CN211317419U CN211317419U CN201922427063.6U CN201922427063U CN211317419U CN 211317419 U CN211317419 U CN 211317419U CN 201922427063 U CN201922427063 U CN 201922427063U CN 211317419 U CN211317419 U CN 211317419U
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Abstract
A diameter-variable swing rod flow meter for an open channel comprises an I-shaped flow measuring support, wherein the I-shaped flow measuring support consists of two longitudinal supports with knob bases and a transverse support with a telescopic structure; the two longitudinal brackets are provided with corresponding middle fixed keys and fixed with transverse brackets; two ends of the transverse bracket with the telescopic structure are provided with fixing knobs for fixing the telescopic structure, and one side of the transverse bracket is provided with a transverse level gauge; the flow meter is simple in structure, high in flow measurement precision, flexible and easy to carry, and suitable for channel flow measurement of various water cross section shapes such as rectangular shapes and U-shaped shapes.
Description
Technical Field
The invention relates to a portable flow meter, in particular to a portable reducing swing rod flow meter for modern agriculture open channel irrigation.
Background
The conventional irrigation area is provided with more common portable flow meters, wherein the water flow of the flow meter is mainly based on a flow rate area method, and the water measuring device has high measurement precision, is expensive and inconvenient for water amount information monitoring, and can be used for checking the water level and flow relation of the irrigation area and monitoring the water amount of an important section in a targeted manner; although the water measuring mode of the hydraulic structure is simple and easy, the water measuring mode consumes manpower, is inconvenient for automatic monitoring of water amount information, has the phenomena of aging, scouring and silting, deformation and the like in the hydraulic structure, is easy to reduce the measuring precision, has short time limit, and can meet the water measuring precision but is inconvenient to popularize by using special water measuring equipment for measuring water.
Aiming at the new current measuring technology, the existing similar current measuring device comprises an inclination angle type open channel automatic current measuring system and a plate type flow measuring device, such as the inclination angle type open channel automatic current measuring system, which comprises a clamping groove, a fixed knob, a support, a level gauge, an angle sensor, a current measuring swing rod, a power supply module and a data controller, the automatic current measuring device integrates the angle sensor and a water level sensor, and finally obtains the U-shaped channel flow and angle through internal data acquisition, calculation and transmission equipment.
The plate-type flow measuring device comprises a beam, a sleeve, a gradient plate, an angle display plate and an angle measuring plate, wherein the flow measuring principle is that impulse of water flow acting on the angle measuring plate is utilized to push the angle measuring plate to move, and the purpose of flow measurement is achieved according to the deflection angle of the angle measuring plate.
Disclosure of Invention
The invention aims to solve the specific technical problem of measuring the flow of the water cross section of an open channel and provide a diameter-variable swing rod flow meter for the open channel.
In order to achieve the above object, the present invention adopts the following technical solutions.
A diameter-variable swing rod flow meter for an open channel comprises an I-shaped flow measuring support, a knob base, a circuit box, a fixed knob, a longitudinal level meter, a transverse level meter, a swing rod lapping hole, a swing rod, a coupling and an angle sensor; the method is characterized in that:
the I-shaped flow measuring bracket consists of two longitudinal brackets with knob bases and a transverse bracket with a telescopic structure; the two longitudinal brackets are provided with corresponding middle fixed keys and fixed with transverse brackets; two ends of the transverse bracket with the telescopic structure are provided with fixing knobs for fixing the telescopic structure, and one side of the transverse bracket is provided with a transverse level gauge; a circuit box is arranged right above the transverse bracket through a hollow stainless steel cuboid; a longitudinal level meter is arranged in front of the circuit box; an inverted concave structure frame formed by metal sheets is arranged below the longitudinal level gauge, two corresponding swing rod carrying holes are formed in the metal sheets on two sides of the inverted concave structure frame, a swing rod shaft and a swing rod are juxtaposed, a coupler and an angle sensor on the outer side of the coupler are connected to one side of the swing rod shaft, and the open channel variable diameter swing rod flow meter is formed.
The utility model provides an it is bright with channel reducing pendulum rod current surveying appearance which characterized in that: the flow measuring method of the open channel reducing swing rod flow measuring instrument comprises the steps that horizontal transverse I-shaped flow measuring supports are arranged on two sides of an open channel, the swing rods freely drop to the bottom of a channel, the swing rods freely swing, after water flows through the channel, the swing rods swing at an angle along with the water flow, meanwhile, an angle sensor displays an angle value corresponding to the flow through a liquid crystal display module, and a mathematical model is established by utilizing the relation between the swing angle and the flow of a water flow section, namely, one flow corresponds to one angleFinally, the flow Q and the angle are obtained
The formula of (a):
wherein M is a constant.
Wherein: the swing rod (8) is a cylindrical swing rod, and the swing angle of the swing rod is 0-90 degrees.
Compared with the prior art, the open channel reducing swing rod flow meter provided by the invention has the advantages that a mathematical model is established by utilizing the relation between the swing angle of the swing rod under the impact of water flow and the flow of a water passing section, namely, one flow corresponds to one angle, an empirical formula is finally fitted, through analysis, once the cylindrical swing rod swings and belongs to inclined cylindrical streaming, the force borne by the cylindrical swing rod in water has three types of gravity, buoyancy of the water and resistance of the water flow, and then the three types of moments are utilized to achieve balance.
The technical scheme provided by the invention has the advantages of simple measuring method, high precision and low investment cost of the flow measuring device, overcomes the defect of high cost of the traditional flow measuring equipment, is telescopic and easy to carry, and is suitable for channels with different water cross section shapes such as a rectangle shape, a U shape and the like.
Drawings
FIG. 1 is a schematic structural diagram of a variable-diameter swing rod flow measuring device.
Fig. 2 is a schematic diagram of the flow measurement of the present invention.
In the figure: 1-a knob base; 2-fixing the knob; 3-a circuit box; 4-a longitudinal level; 5-a transverse level; 6-an I-shaped flow measurement bracket; 7-a swing rod lapping hole; 8-oscillating bar; 9-a coupler; 10-angle sensor.
Detailed Description
The following provides a further detailed description of specific embodiments of the present invention.
In the specific implementation of the open channel reducing swing rod flow meter provided by the invention, as shown in the attached drawing 1, the device is I-shaped, the flow measuring support 6 of the device is composed of two longitudinal supports with a knob base 1 and a transverse support with a telescopic structure, and the height of the whole support can be adjusted through the knob base; corresponding middle fixing keys 11 are arranged on the two longitudinal brackets for fixing the transverse bracket; two ends of the transverse bracket are provided with fixing knobs 2 for fixing the telescopic part of the transverse bracket, one side of the transverse bracket is provided with a transverse level 5, and if the leveling bubble is in the middle, the transverse direction is kept horizontal; a circuit box 3 is arranged in the middle of the transverse bracket through a hollow stainless steel cuboid and used for placing a circuit and a liquid crystal display screen so as to prevent the thunderstorm weather from being damaged by rainwater and thunder; a longitudinal level 4 is arranged in front of the circuit box, and when the level bubble is centered, the bracket is longitudinally kept horizontal; a metal sheet is arranged below the front end of the hollow cuboid, and two swing rod overlapping holes 7 are formed in the metal sheet and used for overlapping swing rods; one side of the swing rod 8 is fixed in a coupler 9, the coupler is connected with an angle sensor 10, and once the swing rod swings for a certain angle, a corresponding angle under a certain flow can be displayed on the liquid crystal display screen.
The variable-diameter swing rod flow measuring device comprises the following specific operation steps:
after the flow measuring device is placed on a channel, the heights of 4 bases are adjusted according to a horizontal and vertical level meter so that the whole support can be kept horizontal in the horizontal and vertical directions;
step two, after leveling, the swing rod freely droops to a position 1mm away from the bottom of the channel to ensure that the bottom of the channel is not rubbed to generate unnecessary resistance so as to influence the flow measurement precision, and then the swing rod is manually shifted back and forth to enable the position of the swing rod overlapping hole 7 in the attached drawing 1 to be proper in tightness;
and step three, after all the parts are ready, opening a water pump valve to supply water to the channel, enabling the swing rod to swing by a certain angle along with water flow, and displaying the numerical value of the angle corresponding to a certain flow by the angle sensor through the liquid crystal display module at the moment, so that an operator can read the numerical value visually.
And step four, when the swing rod is wound by garbage in water, the swing rod is required to be taken down, and the swing angle of the swing rod in water can be influenced, so that the flow measurement precision of the whole device is influenced.
Step five, finally obtaining the flow Q and the angle through a large number of experiments
The formula of (a):
it can be seen that this is a linear relationship, where M is a constant.
Among the above-mentioned specific embodiment, the device's whole stainless steel support all is the fixed knob connection, as shown in figure 1, then adjust the base according to horizontal and vertical two level bubbles on whether placed in the middle, make the device all reach the level horizontal and vertical, install the pendulum rod after that, take the pendulum rod through 7, coupling joint angle sensor is passed through to one end, after sensing the pendulum rod and had certain angle, angle sensor shows the angle value through liquid crystal display, so that the reading is convenient, the pendulum rod department is removable, can install different materials, the pendulum rod of different diameters or different length, it is specific depending on actual conditions and decide.
Claims (2)
1. A diameter-variable swing rod flow meter for an open channel comprises an I-shaped flow measuring support, a knob base, a circuit box, a fixed knob, a longitudinal level meter, a transverse level meter, a swing rod lapping hole, a swing rod, a coupling and an angle sensor; the method is characterized in that:
the I-shaped flow measuring bracket (6) consists of two longitudinal brackets with knob bases (1) and a transverse bracket with a telescopic structure; the two longitudinal brackets are provided with corresponding middle fixed keys and fixed with transverse brackets; two ends of the transverse bracket with the telescopic structure are provided with fixing knobs (2) for fixing the telescopic structure, and one side of the transverse bracket is provided with a transverse level (5); a circuit box (3) is arranged right above the transverse bracket through a hollow stainless steel cuboid; a longitudinal level meter (4) is arranged in front of the circuit box (3); an inverted concave structure frame formed by metal sheets is arranged below the longitudinal level (4), two corresponding swing rod carrying holes (7) are formed in the metal sheets on the two sides of the inverted concave structure frame, a swing rod shaft and a swing rod (8) of the swing rod shaft are arranged in parallel, and a coupler (9) and an angle sensor (10) on the outer side of the coupling (9) are connected to one side of the swing rod shaft, so that the open channel variable diameter swing rod flow meter is formed.
2. The open channel reducing pendulum rod flow meter of claim 1, wherein: the swing rod (8) is a cylindrical swing rod, and the swing angle of the swing rod is 0-90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922427063.6U CN211317419U (en) | 2019-12-30 | 2019-12-30 | Bright channel reducing pendulum rod current surveying appearance of using |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922427063.6U CN211317419U (en) | 2019-12-30 | 2019-12-30 | Bright channel reducing pendulum rod current surveying appearance of using |
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| CN211317419U true CN211317419U (en) | 2020-08-21 |
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| CN201922427063.6U Active CN211317419U (en) | 2019-12-30 | 2019-12-30 | Bright channel reducing pendulum rod current surveying appearance of using |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483832A (en) * | 2020-11-07 | 2021-10-08 | 济南和一汇盛科技发展有限责任公司 | Online measuring device for water flow of channel |
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2019
- 2019-12-30 CN CN201922427063.6U patent/CN211317419U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483832A (en) * | 2020-11-07 | 2021-10-08 | 济南和一汇盛科技发展有限责任公司 | Online measuring device for water flow of channel |
| CN113483832B (en) * | 2020-11-07 | 2023-10-31 | 济南和一汇盛科技发展有限责任公司 | Channel water flow on-line measuring device |
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