CN215003758U

CN215003758U - Triangular weir flow measuring device

Info

Publication number: CN215003758U
Application number: CN202121091355.8U
Authority: CN
Inventors: 马钰; 叶志豪; 陈丹; 李雪纯; 吴伟松; 梁怡帆
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-12-03
Anticipated expiration: 2031-05-20

Abstract

The utility model discloses a triangular weir flow measuring device, which comprises a thin-wall triangular weir main body, an assembly box and a solar power storage device, wherein the thin-wall triangular weir main body is a rectangular plate, a triangular gap is arranged in the middle of the thin-wall triangular weir main body, and a plurality of water level induction sheets are arranged on the thin-wall triangular weir main body along the vertical direction; the assembly box is arranged at the end part of the thin-wall triangular weir main body, and a water level signal data processor, a wireless signal transmitter and a solar storage battery are integrated in the assembly box; solar energy power storage device includes that solar photovoltaic board, solar energy converter and solar battery solar photovoltaic board are located the top of pole setting, and the solar energy converter is located the pole setting lower extreme, solar energy converter top, the solar battery passes through first circuit connecting pipe and is connected with the solar energy converter. The water surface width of the over weir is changed along with the water head, the water surface width is small when the water head is small, and the small change of the flow can cause relatively large water head change, so that the flow measurement precision is improved.

Description

Triangular weir flow measuring device

Technical Field

The utility model belongs to the technical field of water yield measuring equipment, in particular to triangular weir flow measuring device.

Background

At present, agricultural irrigation water still faces the problems of extensive irrigation mode, low effective irrigation coefficient and the like. The current agricultural production of China is in the transition period from extensive agriculture to precision agriculture and traditional agriculture to modern agriculture, and the key for developing precision agriculture and modern agriculture is how to improve the utilization rate of irrigation water, realize the modernization and informatization of irrigation water management means and supply water in a proper time and quantity.

The main water measuring facilities of the irrigation area at the present stage comprise water measuring buildings, special water measuring facilities and water measuring instruments 3. Although the water measuring building is economical and simple, the building standard of the building has great influence on the water measuring precision; although the water meter can measure the flow accurately, the cost is high, and the water meter cannot be accepted by vast irrigation areas.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a but automatic measure formula triangular weir can conveniently measure and improve the measurement accuracy of channel discharge.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

a triangular weir flow measuring device comprises a thin-wall triangular weir main body, an assembly box and a solar energy storage device,

the thin-wall triangular weir main body is a rectangular plate, a triangular gap is formed in the middle of the thin-wall triangular weir main body, and a plurality of water level sensing pieces are arranged on the thin-wall triangular weir main body in the vertical direction;

the assembly box is arranged at the end part of the thin-wall triangular weir main body, and a water level signal data processor, a wireless signal transmitter and a solar storage battery are integrated in the assembly box; the water level signal data processor, the wireless signal emitter and the solar storage battery are connected through leads;

the solar power storage device comprises a solar photovoltaic panel, a solar converter and a solar storage battery, wherein the solar photovoltaic panel is positioned at the top end of the vertical rod, the solar converter is positioned at the lower end of the vertical rod, the solar storage battery is connected with the solar converter through a first line connecting pipe above the solar converter;

the water level induction sheet is connected with the water level signal data processor through a second line connecting pipe.

The water flow to be measured passes through a triangular gap of the triangular thin-wall weir, the water head on the weir is measured by the water level sensing piece, the measured data are transmitted to the water level signal data processor located in the assembly box for analysis, the flow data of the overflowing section are obtained, and the flow data are transmitted to the cloud server in real time through the wireless signal transmitter. The water surface width of the over weir is changed along with the water head, the water surface width is small when the water head is small, and the small change of the flow can cause relatively large water head change, so that the flow measurement precision is improved.

The assembly box is further optimized to be divided into an upper part and a lower part by a detachable partition plate, the upper signal data processor and the wireless signal emitter are positioned above the partition plate, the solar storage battery is positioned below the partition plate, and the partition plate is provided with wiring holes;

the top of the assembly box is provided with a cover plate with a lock.

Further optimize, the water level response piece outside is provided with the safety cover, and both sides are provided with the connection otic placode on the safety cover, have seted up the mounting hole safety cover on the connection otic placode and have passed the mounting hole through stainless steel stagnant water screw and link firmly with thin-walled triangular weir main part.

Further optimizing, the water level induction sheet is a resistance type liquid level sensor.

Preferably, the first line connecting pipe and the second line connecting pipe are rigid pipe fittings or hoses.

Compared with the prior art, the utility model discloses following beneficial effect has:

1) the water flow to be measured passes through a triangular notch of the triangular thin-wall weir, the water level sensor chip is used for measuring the water head on the weir, the measured data are transmitted to the water level signal data processor located in the assembly box for analysis, the flow data of the overflowing section are obtained, and the flow data are transmitted to the cloud server in real time through the wireless signal transmitter. The water surface width of the over weir is changed along with the water head, the water surface width is small when the water head is small, and the small change of the flow can cause relatively large water head change, so that the flow measurement precision is improved.

2) The solar power storage device is arranged, the solar panel is used for supplying power to the storage battery, the required electric energy is provided for the whole device, and an external power supply is not needed; can meet the long-term work.

3) The triangular weir flow measuring device is simple in structure, low in cost and convenient to maintain.

Drawings

Fig. 1 is a schematic structural view of the triangular weir flow measuring device of the present invention;

FIG. 2 is a schematic view of the construction of the assembly box;

FIG. 3 is a schematic structural view of a water level sensor sheet;

fig. 4 is a schematic structural view of the protective cover.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 4, the triangular weir flow measuring device comprises a thin-wall triangular weir main body 100, an assembly box 200 and a solar power storage device, wherein the thin-wall triangular weir main body 100 is a rectangular plate, a triangular gap is formed in the middle of the thin-wall triangular weir main body 100, and a plurality of water level sensing pieces 101 are arranged on the thin-wall triangular weir main body 100 along the vertical direction; the assembly box 200 is arranged at the end part of the thin-wall triangular weir main body 100, and a water level signal data processor, a wireless signal transmitter 203 and a solar storage battery 206 are integrated in the assembly box 200; the water level signal data processor, the wireless signal transmitter 203 and the solar storage battery 206 are connected through leads; the solar power storage device comprises a solar photovoltaic panel 300, a solar converter 301 and a solar storage battery 206, wherein the solar photovoltaic panel 300 is positioned at the top end of an upright post 302, the solar converter 301 is positioned at the lower end of the upright post 302, the solar storage battery 206 is connected with the solar converter 301 through a first line connecting pipe 207 above the solar converter 301; the water level sensing piece 101 is connected to the water level signal processor through a second line connection pipe 201.

The solar photovoltaic panel 300 and the solar converter 301 form a solar power generation device.

In this embodiment, the water level sensing sheet 101 uses a conventional resistance-type liquid level sensor, which measures the liquid level through a series of exposed parallel conductive traces to determine the water level, and is not described in detail for the prior art.

As shown in fig. 3 and 4, a protective cover 102 is arranged outside the water level sensing piece 101, connecting ear plates are arranged on two sides of the protective cover 102, and mounting holes 103 are formed in the connecting ear plates, so that the protective cover 102 penetrates through the mounting holes 103 through stainless steel water stop screws to be fixedly connected with the thin-wall triangular weir main body 100. The water level sensing sheet 101 is connected with the water level signal data processor and the wireless signal transmitter 203 through the second line connecting pipe 201, and converts the obtained water level electric signal into a digital signal and uploads the digital signal to the cloud end through the wireless transmitter.

As shown in fig. 2, the assembly box 200 is divided into an upper part and a lower part by a detachable partition 204, the upper signal data processor and the wireless signal emitter 203 are positioned above the partition, the solar storage battery 206 is positioned below the partition, and the partition is provided with a wiring hole 205; the top of the assembly box 200 is provided with a locking cover plate 202 for equipment protection and routine maintenance.

In this embodiment, the first line connection pipe 207 and the second line connection pipe 201 are rigid pipes.

In other embodiments, the first and second

line connection pipes

207 and 201 may be hoses.

The working principle of the device is as follows: the flow measurement of the triangular thin-wall weir is characterized in that the width of the water surface passing through the weir is changed along with the water head, the width of the water surface is small when the water head is small, and the small change of the flow can cause relatively large water head change, so that the flow measurement precision is improved; according to the Thompson test, when the included angle of the weir crest is 90 degrees, the flow formula is as follows:

Q＝1.4H^5/2

in the formula: q is the flow of the triangular weir, H is the weir water head, and the precision H is ensured to be within the range of 0.05m < H <0.25 m.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the protection scope of the present invention.

The unexplained parts related to the present invention are the same as or implemented by using the prior art.

Claims

1. A triangular weir flow measuring device which is characterized in that: comprises a thin-wall triangular weir main body (100), an assembly box (200) and a solar energy storage device,

the thin-wall triangular weir main body (100) is a rectangular plate, a triangular gap is formed in the middle of the thin-wall triangular weir main body, and a plurality of water level sensing pieces (101) are arranged on the thin-wall triangular weir main body (100) along the vertical direction;

the assembly box (200) is arranged at the end part of the thin-wall triangular weir main body (100), and a water level signal data processor, a wireless signal transmitter (203) and a solar storage battery (206) are integrated in the assembly box (200); the water level signal data processor, the wireless signal emitter (203) and the solar storage battery (206) are connected through leads;

the solar energy power storage device comprises a solar photovoltaic panel (300), a solar energy converter (301) and a solar storage battery (206), wherein the solar photovoltaic panel (300) is positioned at the top end of the vertical rod (302), the solar energy converter (301) is positioned at the lower end of the vertical rod (302), the solar storage battery (206) is connected with the solar energy converter (301) through a first line connecting pipe (207) above the solar energy converter (301);

the water level induction sheet (101) is connected with the water level signal processor through a second line connecting pipe (201).

2. A triangular weir flow measuring device as set forth in claim 1, wherein: the assembly box (200) is divided into an upper part and a lower part by a detachable clapboard (204), a water level signal data processor and a wireless signal emitter (203) are positioned above the clapboard, a solar storage battery (206) is positioned below the clapboard, and the clapboard is provided with a wiring hole (205);

the top of the assembly box (200) is provided with a locking cover plate (202).

3. A triangular weir flow measuring device as set forth in claim 1, wherein: the water level sensing piece (101) is externally provided with a protective cover (102), two sides of the protective cover (102) are provided with connecting lug plates, the connecting lug plates are provided with mounting holes (103), and the protective cover (102) penetrates through the mounting holes (103) through stainless steel water stop screws to be fixedly connected with the thin-wall triangular weir main body (100).

4. A triangular weir flow measuring device as set forth in claim 1, wherein: the water level sensing sheet (101) is a resistance type liquid level sensor.

5. A triangular weir flow measuring device as set forth in claim 1, wherein: the first line connecting pipe (207) and the second line connecting pipe (201) are rigid pipe fittings or hoses.