Flow measuring device for water conservancy irrigation area construction

Abstract

The utility model relates to the technical field of flow measuring equipment, in particular to a water conservancy irrigation area construction flow measuring device which comprises a channel, and a Parshall groove and an auxiliary flow measuring mechanism are arranged in the channel. The auxiliary flow measuring mechanism comprises a buoyancy assembly, a still water net used for reducing water flow fluctuation is arranged on the buoyancy assembly, the still water net is obliquely arranged on the buoyancy assembly, the horizontal height of the bottom of the oblique still water net is lower than that of the bottom of the buoyancy assembly, and a driving assembly is arranged on one side of the top of the still water net. The water conservancy irrigation area construction flow measuring device has the beneficial effects that when water flow is detected, water flow liquid level fluctuation can be reduced, so that the height fluctuation change of the water flow liquid level is reduced, the detection accuracy of the water flow is improved, meanwhile, bubbles on the water flow liquid level in a channel are eliminated, and the water conservancy irrigation area construction flow measuring device is convenient to use. The water flow detection accuracy of the ultrasonic liquid level meter is prevented from being influenced by bubbles on the water flow liquid level, so that the detection precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flow measurement equipment technical field, especially a water conservancy irrigation area construction flow measuring device. BACKGROUND

[0002] Due to the limited and uneven distribution of water resources, when water conservancy irrigation is carried out, it is often necessary to use channels to guide water to the irrigation area. Accurate measurement of open channel flow plays an important role in saving irrigation water. Rapid and accurate flow measurement can better monitor and manage water resources, which is of great significance for water saving. Considering the high equipment maintenance cost of the flow area method, in the flow measurement of open channel, the stable water level flow relationship formed at the weir groove is used to measure the flow, and the flow water level flow method is more widely used.

[0003] The Parshall trough is an auxiliary equipment for measuring the flow of the open channel. The Parshall trough is used in cooperation with the open channel flow meter to convert the size of the flow in the open channel into the height of the liquid level, and then measure the flow of water in the open channel. Using the Parshall trough to monitor the flow of the open channel is an excellent measurement method.

[0004] In the Chinese patent CN215639631U, a simple device for quickly measuring channel flow is disclosed, which includes a channel body, first mounting plates are arranged on both sides of the top of the channel body, fixed blocks are fixedly connected to the ends of the two first mounting plates opposite to each other, fixed pins are fixedly connected to the inside of the fixed blocks, ground nails are installed on the front side and the rear side of the bottom of the fixed blocks, adjusting grooves are formed on the front side and the rear side of the inside of the first mounting plates, a positioning groove is formed on the top end of the inside of the first mounting plate, a second mounting plate is arranged between the two adjusting grooves, the second mounting plate is movably sleeved with the adjusting grooves, adjusting blocks are arranged on both sides of the second mounting plate, mounting holes are formed on both sides of the top of the second mounting plate, limit springs are arranged in the mounting holes, positioning blocks are arranged on the top of the limit springs, a first connecting piece is arranged at the middle position of the bottom of the second mounting plate, a second connecting piece is sleeved with the bottom of the first connecting piece, the second connecting piece is fixedly connected with the first connecting piece through screws, external threads are arranged on the outer side of the second connecting piece, an adjusting ring is arranged on the outer side of the second connecting piece, internal threads are arranged in the inside of the adjusting ring, the internal threads are matched with the external threads, an adjusting cylinder is arranged at the bottom of the adjusting ring, the adjusting cylinder is rotatably connected with the adjusting ring through a bearing, a connecting spring is arranged at the bottom end of the inside of the adjusting cylinder, the top end of the connecting spring is fixedly connected with the second connecting piece, and a flow measuring instrument body is arranged at the bottom end of the adjusting cylinder.

[0005] However, compared with the prior art and the comparison scheme, the flow measuring device has the following problems in actual use:

[0006] Due to the existence of residual fertilizer in the soil around the channel, the residual fertilizer will be washed into the channel with irrigation water or rainwater, and after the fertilizer dissolves in the water, the chemical properties of the water may change, the surface tension of the water changes, and foam is easily generated when the water flows and agitates, in windy weather conditions, the wind will blow some dust, soil and other small particles around the channel to the water surface, these particles may become the stable center of the foam, making the foam more stable and persistent, and the existence of the foam will affect the detection accuracy of the ultrasonic liquid level meter, causing false measurement, and reducing the detection accuracy. Content of the utility model

[0007] The utility model discloses a water conservancy irrigation area construction flow measuring device which overcomes the defects of the prior art and solves the problems mentioned in the background art.

[0008] The utility model discloses a water conservancy irrigation area construction flow measuring device, which comprises a channel, a Pascher tank and an auxiliary flow measuring mechanism arranged in the channel.

[0009] The auxiliary flow measuring mechanism comprises a buoyancy assembly, a still water net for reducing water flow fluctuation is arranged on the buoyancy assembly, the still water net is arranged obliquely on the buoyancy assembly, the horizontal height of the bottom of the oblique still water net is lower than that of the bottom of the buoyancy assembly, a driving assembly is arranged on one side of the top of the still water net, a rotating plate for reducing air bubbles floating on the water flow is hingedly connected to the top of the still water net, the number of the rotating plates is multiple, the multiple rotating plates are sequentially hingedly connected to the oblique still water net from bottom to top, the widths of the different rotating plates are different according to the different horizontal heights, the width of the rotating plate with the lower horizontal height is relatively larger, and the width of the rotating plate with the higher horizontal height is relatively smaller, and the sum of the widths of the multiple rotating plates is equal to the width of the still water net.

[0010] Preferably, a connecting area is arranged in the channel, and a chute is formed in the channel.

[0011] Preferably, the Pascher tank comprises a contraction section, a throat section and a diffusion section, the throat section is arranged between the contraction section and the diffusion section, a connecting frame is arranged on the contraction section, and an ultrasonic liquid level meter is arranged on the connecting frame.

[0012] Preferably, the buoyancy assembly comprises a floating block, connecting seats are arranged on the floating block, the number of the connecting seats is two, the connecting seats are symmetrically arranged on the two sides of the top of the floating block, a screw rod is arranged on each connecting seat, a knob is arranged on one end of the screw rod, a sliding block is rotatably connected to the end of the screw rod away from the knob, the sliding block is arranged in the chute, and the floating block is slidably connected to the inside of the channel through the sliding block.

[0013] Preferably, the still water net is fixedly installed on the connecting seat, and a sliding hole is formed in the frame of the still water net.

[0014] Preferably, the driving assembly comprises a driving member fixedly installed on the frame of the static water net, an output end of the driving member is provided with a connecting rod, the connecting rod is rotationally connected to the frame of the static water net, and the connecting rod is provided with a first incomplete gear.

[0015] Preferably, the bottom of the rotating plate is provided with a thorn-shaped protrusion, one side of the rotating plate is provided with a rotating shaft, the rotating plate is rotationally connected to the frame of the static water net through the rotating shaft, one end of the rotating shaft is provided with a second incomplete gear, the second incomplete gear is meshed with the first incomplete gear, both sides of the rotating plate are provided with sliding rods, the sliding rods are slidingly connected to the frame of the static water net through sliding holes, one end of the sliding rod is provided with a connecting block, the connecting block is provided with an elastic member, and the elastic member is arranged between the connecting block and the static water net.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The water flow measuring device for the water conservancy irrigation area construction can reduce the water flow liquid surface fluctuation, thereby reducing the height fluctuation of the water flow liquid surface, and further improving the detection accuracy of the water flow, and the bubbles on the water flow liquid surface are eliminated, the existence of the bubbles on the water flow liquid surface is avoided, the accuracy of the water flow detection of the ultrasonic liquid level meter is improved, and the detection precision is improved.

[0018] The parts not involved in the device are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of the drawings.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a sectional view structural schematic diagram of the utility model;

[0022] Figure 3 Figure 2 It is a working state schematic diagram of the position A;

[0023] Figure 4 It is a structural schematic diagram of the channel of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the Parshall trough of the utility model;

[0025] Figure 6 It is a structural schematic view of the auxiliary flow measuring mechanism of the utility model;

[0026] Figure 7 It is Figure 6 It is a structural enlarged schematic view of B in the middle;

[0027] Figure 8 It is a structural schematic view of the buoyancy assembly of the utility model;

[0028] Figure 9 It is a structural schematic view of the still water net of the utility model;

[0029] Figure 10 It is a structural schematic view of the driving assembly of the utility model;

[0030] Figure 11 It is a structural schematic view of the rotating plate of the utility model.

[0031] In the drawing: 1, channel; 101, connecting area; 102, chute; 2, Parshall trough; 201, contraction section; 202, throat section; 203, diffusion section; 204, connecting frame; 205, ultrasonic liquid level meter; 3, auxiliary flow measuring mechanism; 31, buoyancy assembly; 311, buoy; 312, connecting seat; 313, screw rod; 314, knob; 315, sliding block; 32, still water net; 321, sliding hole; 33, driving assembly; 331, driving piece; 332, connecting rod; 333, first incomplete gear; 34, rotating plate; 341, thorn-shaped protrusion; 342, rotating shaft; 343, second incomplete gear; 344, sliding rod; 345, connecting block; 346, elastic piece. DETAILED DESCRIPTION

[0032] In the description of the utility model, it needs to be explained that, unless there is explicit provision and limitation, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0033] The additional aspects and advantages of the utility model will be further given in the following description of the drawing, and some will become obvious from the following description, or be understood through the practice of the utility model.

[0034] As Figures 1-3 As shown, a water conservancy irrigation district construction flow measuring device, it includes channel 1, the channel 1 is provided with Parshall trough 2 and auxiliary flow measuring mechanism 3.

[0035] AsFigure 4 As shown, the inside of the channel 1 is provided with a connecting area 101, and the inside of the channel 1 is provided with a chute 102, and the number of the chute 102 is two, which is symmetrically distributed on both sides of the inside of the channel 1.

[0036] As shown in the drawings, Figure 5 As shown, the Paschal trough 2 is arranged at the connecting area 101 in the inside of the channel 1, the Paschal trough 2 comprises a contraction section 201, a throat section 202 and a diffusion section 203, the throat section 202 is arranged between the contraction section 201 and the diffusion section 203, the contraction section 201 is provided with a connecting frame 204, and the connecting frame 204 is provided with an ultrasonic liquid level meter 205, the ultrasonic liquid level meter 205 is prior art, and the structure and working principle are the same as or can be realized by the prior art.

[0037] As shown in the drawings, Figure 3 , Figure 6 and Figure 7 As shown, the auxiliary flow measuring mechanism 3 comprises a buoyancy assembly 31, a still water net 32, a driving assembly 33 and a rotating plate 34, the buoyancy assembly 31 is provided with the still water net 32 for reducing water flow fluctuation, the still water net 32 is arranged on the buoyancy assembly 31 in an inclined manner, the horizontal height of the bottom of the inclined still water net 32 is lower than that of the bottom of the buoyancy assembly 31, one side of the top of the still water net 32 is provided with the driving assembly 33, and the top of the still water net 32 is hinged with the rotating plate 34 for reducing the bubbles floating on the water flow, the number of the rotating plate 34 is multiple, multiple rotating plates 34 are sequentially hinged on the inclined still water net 32 from bottom to top, according to the different horizontal heights of the rotating plate 34, the widths of different rotating plates 34 are also different, the width of the rotating plate 34 is relatively larger as the horizontal height is lower, and the width of the rotating plate 34 is relatively smaller as the horizontal height is higher, and the sum of the widths of multiple rotating plates 34 is equal to the width of the still water net 32.

[0038] As shown in the drawings, Figure 3 and Figure 8 As shown, the buoyancy assembly 31 comprises a float 311, a connecting seat 312, a screw rod 313, a knob 314 and a sliding block 315, the float 311 is provided with the connecting seat 312, the number of the connecting seat 312 is two, which is symmetrically distributed on both sides of the top of the float 311, the connecting seat 312 is provided with the screw rod 313, one end of the screw rod 313 is provided with the knob 314, and the end of the screw rod 313 away from the knob 314 is rotationally connected with the sliding block 315, the sliding block 315 is arranged in the inside of the chute 102, and the float 311 is slidingly connected in the inside of the channel 1 through the sliding block 315.

[0039] As shown in the drawings, Figure 3 , Figure 7 ,Figure 8 and Figure 9 As shown in the figure, the still water net 32 is fixedly installed on the connecting seat 312 by bolts, and a sliding hole 321 is formed in the frame of the still water net 32.

[0040] As shown in the figure, Figure 3 , Figure 7 , Figure 9 and Figure 10 As shown in the figure, the driving assembly 33 comprises a driving piece 331, a connecting rod 332 and a first incomplete gear 333, the driving piece 331 is fixedly installed on the frame of the still water net 32, the output end of the driving piece 331 is provided with the connecting rod 332, the connecting rod 332 is rotatably connected to the frame of the still water net 32, and the first incomplete gear 333 is arranged on the connecting rod 332.

[0041] As shown in the figure, Figure 3 , Figure 6 , Figure 7 , Figure 9 and Figure 11 As shown in the figure, the bottom of the rotating plate 34 is provided with a plurality of thorn-shaped protrusions 341 which are uniformly distributed on the bottom of the rotating plate 34, one side of the rotating plate 34 is provided with a rotating shaft 342, the rotating plate 34 is rotatably connected to the frame of the still water net 32 through the rotating shaft 342, one end of the rotating shaft 342 is provided with a second incomplete gear 343, the second incomplete gear 343 is in mesh with the first incomplete gear 333, both sides of the rotating plate 34 are provided with sliding rods 344, the sliding rods 344 are slidably connected to the frame of the still water net 32 through the sliding holes 321, one end of the sliding rod 344 is provided with a connecting block 345, the connecting block 345 is provided with an elastic piece 346, and the elastic piece 346 is arranged between the connecting block 345 and the still water net 32.

[0042] The working process is as follows:

[0043] S1, in use, the floating block 311 changes with the change of the liquid level of the water flow in the channel 1, and the floating block 311 drives the still water net 32 to move, since the still water net 32 is obliquely arranged on the buoyancy assembly 31, and the horizontal height of the bottom of the oblique still water net 32 is lower than that of the bottom of the buoyancy assembly 31, part of the still water net 32 is below the liquid level of the water flow in the channel 1, and the other part of the still water net 32 is above the liquid level of the water flow in the channel 1;

[0044] S2, when the water flow passes through the still water net 32, due to the resistance of the still water net 32 and the re-distribution of the water flow by the mesh of the still water net 32, the fluctuation of the water flow liquid surface is reduced, thereby reducing the fluctuation of the height of the water flow liquid surface;

[0045] S3, the driving member 331 is started, the driving member 331 drives the first incomplete gear 333 to rotate through the connecting rod 332, the first incomplete gear 333 drives the second incomplete gear 343 to rotate, the second incomplete gear 343 drives the rotating plate 34 to rotate to the direction of the static water net 32 through the rotating shaft 342, the bubble blocked by the static water net 32 on the water flow liquid surface in the channel 1 is pierced or squeezed by the thorn-shaped protrusion 341 on the rotating plate 34 and the rotating plate 34, and the elastic element 346 is contracted;

[0046] S4, when the first incomplete gear 333 rotates to the part without engaging teeth, the first incomplete gear 333 and the second incomplete gear 343 are no longer engaged, the elastic element 346 rebounds, drives the connecting block 345 to move, and the connecting block 345 drives the rotating plate 34 to reset through the slide rod 344;

[0047] S5, with the rotation of the first incomplete gear 333, when the first incomplete gear 333 and the second incomplete gear 343 are engaged, the rotating plate 34 is driven to continue to rotate to the direction of the static water net 32, and the bubble on the water flow liquid surface in the channel 1 is eliminated by reciprocating;

[0048] S6, the ultrasonic liquid level meter 205 detects the flow of the water flow passing through the Basset tank 2, reduces the fluctuation of the water flow liquid surface, thereby reducing the fluctuation of the height of the water flow liquid surface, and further improving the detection accuracy of the water flow flow rate, and the bubble on the water flow liquid surface in the channel 1 is eliminated, so that the existence of the bubble on the water flow liquid surface does not affect the detection accuracy of the water flow flow rate by the ultrasonic liquid level meter 205, thereby improving the detection accuracy.

[0049] The basic principle, main features and advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A flow measurement device for irrigation area construction, characterized in that: Including channel (1), the channel (1) is provided with a parshall trough (2) and an auxiliary flow measuring mechanism (3); The auxiliary flow measuring mechanism (3) includes a buoyancy assembly (31), a still water net (32) for reducing water flow fluctuation is arranged on the buoyancy assembly (31), the still water net (32) is arranged on the buoyancy assembly (31) in an inclined manner, the horizontal height of the bottom of the inclined still water net (32) is lower than the horizontal height of the bottom of the buoyancy assembly (31), one side of the top of the still water net (32) is provided with a driving assembly (33), the top of the still water net (32) is hinged with a rotating plate (34) for reducing bubbles floating on the water flow, the number of the rotating plate (34) is multiple, multiple rotating plates (34) are sequentially hinged on the inclined still water net (32) from bottom to top, according to the different horizontal heights of the rotating plates (34), the widths of different rotating plates (34) are also different, the lower the horizontal height of the rotating plate (34), the relatively larger the width of the rotating plate (34), the higher the horizontal height of the rotating plate (34), the relatively smaller the width of the rotating plate (34), and the sum of the widths of multiple rotating plates (34) is equal to the width of the still water net (32).

2. The flow measuring device for water conservancy irrigation area construction according to claim 1, characterized in that: The inside of the channel (1) is provided with a connecting area (101), and the inside of the channel (1) is provided with a chute (102).

3. The flow measuring device for water conservancy irrigation area construction according to claim 1, characterized in that: The parshall trough (2) includes a contraction section (201), a throat section (202) and a diffusion section (203), the throat section (202) is arranged between the contraction section (201) and the diffusion section (203), the contraction section (201) is provided with a connecting frame (204), and the connecting frame (204) is provided with an ultrasonic liquid level meter (205).

4. The flow measuring device for water conservancy irrigation area construction according to claim 2, characterized in that: The buoyancy assembly (31) includes a floating block (311), the floating block (311) is provided with a connecting seat (312), the number of the connecting seat (312) is two, and the connecting seat (312) is symmetrically distributed on both sides of the top of the floating block (311), the connecting seat (312) is provided with a screw rod (313), one end of the screw rod (313) is provided with a knob (314), and the end of the screw rod (313) away from the knob (314) is rotatably connected with a sliding block (315), the sliding block (315) is arranged in the inside of the chute (102), and the floating block (311) is slidably connected in the inside of the channel (1) through the sliding block (315).

5. The flow measuring device for water conservancy irrigation area construction according to claim 4, characterized in that: The still water net (32) is fixedly installed on the connecting seat (312), and a sliding hole (321) is formed in the frame of the still water net (32).

6. The flow measuring device for irrigation water construction according to claim 5, characterized in that: The driving assembly (33) includes a driving piece (331), the driving piece (331) is fixedly installed on the frame of the still water net (32), the output end of the driving piece (331) is provided with a connecting rod (332), the connecting rod (332) is rotatably connected to the frame of the still water net (32), and the connecting rod (332) is provided with a first incomplete gear (333).

7. The flow measuring device for water conservancy irrigation area construction according to claim 6, characterized in that: The bottom of the rotating plate (34) is provided with a thorn-shaped protrusion (341), one side of the rotating plate (34) is provided with a rotating shaft (342), the rotating plate (34) is rotatably connected to the frame of the still water net (32) through the rotating shaft (342), one end of the rotating shaft (342) is provided with a second incomplete gear (343), the second incomplete gear (343) is meshed with the first incomplete gear (333), both sides of the rotating plate (34) are provided with a sliding rod (344), the sliding rod (344) is slidably connected to the frame of the still water net (32) through the sliding hole (321), one end of the sliding rod (344) is provided with a connecting block (345), the connecting block (345) is provided with an elastic element (346), and the elastic element (346) is arranged between the connecting block (345) and the still water net (32).

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