CN114235110A - Flow verification system combining standard meter detection and variable open channel detection - Google Patents
Flow verification system combining standard meter detection and variable open channel detection Download PDFInfo
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Abstract
The invention relates to a flow verification system combining standard meter detection and variable open channel detection, which comprises a first verification mechanism for detecting a small-diameter pipeline flowmeter, a second verification mechanism for detecting a large-diameter pipeline flowmeter and a third verification mechanism for detecting an open channel flowmeter, wherein the first verification mechanism, the second verification mechanism and the third verification mechanism are sequentially arranged in the water flow conveying direction. The flowmeter of the small-caliber pipeline can be calibrated through the first calibrating mechanism; the large-diameter pipeline flowmeter can be calibrated by combining the first calibrating mechanism and the second calibrating mechanism; the open channel flowmeter can be calibrated through a third calibrating mechanism; the application range is wide, and the convenience of the verification process is improved.
Description
Technical Field
The invention relates to the technical field of flowmeter detection equipment, in particular to a flow verification system combining standard meter detection and variable open channel detection.
Background
The ultrasonic open channel flowmeter and the ultrasonic pipeline flowmeter are two common measuring tools, and the ultrasonic open channel flowmeter and the ultrasonic pipeline flowmeter need to be checked before use so as to ensure the accuracy of a detection result.
At present, aiming at quality supervision and management of an open channel flowmeter, a calibration/calibration device of the open channel flowmeter is provided; for quality supervision and management of the pipeline flowmeter, a pipeline flowmeter verification/calibration device is provided. However, when a manufacturing enterprise needs to perform the calibration/calibration of the open channel flowmeter and the pipeline flowmeter at the same time, the manufacturing enterprise may need to go to two different places or sites to perform the detection, and the detection process is very inconvenient.
Patent application No. 201710469984.1, open channel and pipeline sewage flow integration standard device, including rivers regulation and control system, open channel detection section, pipeline detection section, inverted U-shaped pipe and backward flow canal. This application can carry out the examination/calibration of ultrasonic wave open channel flowmeter and ultrasonic wave pipeline flowmeter simultaneously, but can only carry out the pipeline flowmeter examination of little pipe diameter, its open channel is fixed open channel in addition, also width, the slope of ditch, drop all can't be adjusted, consequently compare the emulation nature poor with actual ditch, can't simulate real hydrology environment, and the testing result is also inaccurate.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a flow verification system combining standard meter detection and variable open channel detection.
The invention is realized by the following technical scheme, and provides a flow verification system combining standard meter detection and variable open channel detection, which comprises a first verification mechanism for detecting a small-diameter pipeline flowmeter, a second verification mechanism for detecting a large-diameter pipeline flowmeter and a third verification mechanism for detecting an open channel flowmeter, wherein the first verification mechanism, the second verification mechanism and the third verification mechanism are sequentially arranged in the water flow conveying direction.
Preferably, the first calibration mechanism comprises a water storage tank supplied with water through a water pump, the water storage tank is connected with the head end water collecting tank through a plurality of small-pipe-diameter water conveying pipelines, and a water outlet is formed in the head end water collecting tank; and each small-diameter water pipeline is connected with a standard small-diameter pipeline flowmeter, and each small-diameter water pipeline is connected with a small-diameter pipeline flowmeter to be detected. The standard small-caliber pipeline flowmeter connected with the same small-caliber water pipeline corresponds to the small-caliber pipeline flowmeter to be detected in model. Each small-diameter water conveying pipeline is connected with a switch valve and a pipeline emptying valve, and the switch valve is adjacent to the head-end water collecting tank. The switch valve can realize the switch of the corresponding small-caliber water conveying pipeline, and the selective use of a plurality of small-caliber water conveying pipelines is realized. The pipe evacuation valve may evacuate water in the pipe after the detection. The method comprises the following steps that a small-pipe-diameter pipeline flowmeter to be detected is abutted with a small-pipe-diameter water pipeline through a flange and then fixed through a bolt, the small-pipe-diameter pipeline flowmeter to be detected is installed on the small-pipe-diameter water pipeline during detection, and the small-pipe-diameter pipeline flowmeter to be detected is detached after the detection is finished.
Preferably, the number of the small-pipe-diameter water pipes with the diameter of 500 mm is four, the number of the small-pipe-diameter water pipes with the diameter of 400 mm is two, and the number of the small-pipe-diameter water pipes with the diameter of 300 mm is one.
Preferably, the second calibration mechanism comprises a tail water collecting tank, a water inlet is arranged on the tail water collecting tank, a plurality of large-diameter water conveying pipelines with different pipe diameters are arranged between the tail water collecting tank and a head water collecting tank, and each large-diameter water conveying pipeline is connected with a large-diameter pipeline flowmeter to be tested, wherein the pipe diameter of each large-diameter water conveying pipeline corresponds to that of the large-diameter pipeline flowmeter; a plurality of large-diameter water pipelines are assembled together through two mounting discs and are arranged on the mounting discs in a circumferential direction; the mounting disc is driven by a power mechanism to drive a plurality of large-diameter water pipelines to rotate.
Preferably, two ends of each large-diameter water conveying pipeline are connected with reducing joints, the reducing joint at one end is in butt joint with a water outlet on the head end water collecting tank, and the reducing joint at the other end is in butt joint with a water inlet on the tail end water collecting tank. The reducing joint, the water outlet and the water inlet are respectively provided with a flange plate, the flange plate of the reducing joint is connected with the flange plate of the water outlet through a bolt after being in butt joint, and the flange plate of the reducing joint is connected with the flange plate of the water inlet through a bolt after being in butt joint.
Preferably, the number of the large-diameter water pipes with the diameter of 1200 mm is one, the number of the large-diameter water pipes with the diameter of 1400 mm is one, the number of the large-diameter water pipes with the diameter of 1600 mm is one, the number of the large-diameter water pipes with the diameter of 1800 mm is one, and the number of the large-diameter water pipes with the diameter of 2000 mm is one.
Preferably, the power mechanism comprises two sets of electric roller carriers, the two mounting discs are respectively placed on the two sets of electric roller carriers, and the two sets of electric roller carriers drive the mounting discs to rotate, so that the rotation of the large-diameter water delivery pipelines is realized.
Preferably, the tail end water collecting box is connected with a water distribution pipe, and the water distribution pipe is connected with the fixed open channel.
Preferably, the third calibrating mechanism comprises a stilling water tank, a drainage tank and a variable channel main body, the variable channel main body is positioned between the stilling water tank and the drainage tank, the stilling water tank is connected with the tail end water collecting tank through a plurality of drainage pipelines, and the stilling water tank is provided with a drainage port for draining water to the variable channel main body; the drainage groove is provided with a water inlet for water in the variable channel main body to enter, and the drainage groove is provided with an electric flap gate for controlling drainage.
Preferably, the interior of the stilling water tank is provided with sewer pipes which correspond to the drainage pipes in number and are vertically arranged, the upper end of each sewer pipe is fixed with the top surface of the stilling water tank, a gap is reserved between the lower end of each sewer pipe and the bottom surface of the stilling water tank, and each drainage pipe is correspondingly connected with one sewer pipe. The water in the tail end water collecting tank is discharged into the force eliminating water tank through the sewer pipe, and the impact force of the discharged water can be effectively reduced because the water is discharged downwards.
Preferably, the variable canal main body comprises two canal bottoms and two canal walls, the two canal walls are respectively located on the two canal bottoms, an accommodating groove arranged along the extending direction of the variable canal main body is arranged between the two canal bottoms, the distance between the two canal walls is adjustable, the included angle between each canal wall and the corresponding canal bottom is adjustable, and the height of the head and the tail of each canal bottom is adjustable.
Preferably, each channel bottom comprises a bottom support frame of the surface covering panel, each channel wall comprises a side support frame of the surface covering panel, and each side support frame is connected with the bottom support frame through an adjusting device. The adjusting device comprises a plurality of groups of adjusting mechanisms which are sequentially arranged along the extending direction of the variable channel main body; each group of adjusting mechanisms comprises a sliding seat which is in sliding connection with the bottom support frame, a sliding chute for the sliding seat to slide is arranged on the bottom support frame, the lower part of the side support frame is hinged with one end of the sliding seat, a push rod of the angle adjusting oil cylinder is hinged with the upper part of the side support frame, and a cylinder seat of the angle adjusting oil cylinder is hinged with the other end of the sliding seat. The cylinder seat of the canal width adjusting oil cylinder is fixedly connected with the bottom supporting frame, and the push rod of the canal width adjusting oil cylinder is fixedly connected with the sliding seat. The adjustment of the distance between the two canal walls can be realized by controlling the canal width adjusting oil cylinder, and the adjustment of the angle between the canal wall and the corresponding canal bottom can be realized by controlling the angle adjusting oil cylinder.
Preferably, both sides of the waterproof cloth are respectively fixed on two canal walls, the middle part of the waterproof cloth covers the bottom of the canal and covers the containing groove, and the cloth containing mechanism is arranged in the containing groove. The cloth collecting mechanism comprises a bracket which is fixed with the bottom surface of the containing groove and is arranged along the extending direction of the variable channel main body, two pressing rods are respectively arranged on two sides of the bracket, a gap for the waterproof cloth to fall into is reserved between each pressing rod and the bottom supporting frame, and the two pressing rods are connected with the bracket through a supporting device. The supporting device comprises a plurality of bidirectional oil cylinders and a plurality of cross arms, the bidirectional oil cylinders and the cross arms are arranged at intervals, and two push rods of each bidirectional oil cylinder are fixedly connected with two pressing rods respectively. Each cross arm comprises a first rotating arm and a second rotating arm, and the first rotating arm is hinged with the second rotating arm; one end of the first rotating arm is hinged with one of the pressing rods, and the other end of the first rotating arm is connected with the other pressing rod in a sliding manner; one end of the second rotating arm is hinged with one of the pressing rods, and the other end of the second rotating arm is connected with the other pressing rod in a sliding mode. The sliding connection mode here is: the compressing rod is provided with a sliding chute, a sliding block is arranged in the sliding chute, and the first rotating arm and the second rotating arm are both connected with the sliding block.
When the distance between two canal walls diminishes, two canal walls are close to the storage tank, and two canal walls promote the tarpaulin for in the unnecessary part of tarpaulin falls into both sides clearance, after the position of two canal walls was transferred, operation two-way hydro-cylinder made two compressing rods will fall into the tarpaulin of both sides clearance crowded tightly, just also seal the tarpaulin in the clearance, avoid water to enter into in the tarpaulin in the clearance.
Preferably, the cover plate is buckled at the accommodating groove, the cloth accommodating mechanism is positioned below the cover plate, and the cover plate is connected with the bracket. Gaps for the waterproof cloth to fall into are reserved between the cover plate and the bottom support frame.
Preferably, the head end and the tail end of each bottom support frame are respectively provided with a lifting oil cylinder, the head end and the tail end of the channel bottom can be adjusted in height through adjusting the lifting oil cylinders, the head end and the tail end of the channel bottom can simulate the head of an actual channel on one hand, and the water flow speed can be adjusted on the other hand.
The invention has the beneficial effects that:
1. the flowmeter of the small-caliber pipeline can be calibrated through the first calibrating mechanism; the large-diameter pipeline flowmeter can be calibrated by combining the first calibrating mechanism and the second calibrating mechanism; the open channel flowmeter can be calibrated through a third calibrating mechanism; the application range is wide, and the convenience of the verification process is improved.
2. The variable canal main body of the third calibrating mechanism can adjust the width, gradient, fall and the like of the canal, compared with the actual canal, the variable canal main body has high simulation, simulates and presses close to a real hydrological environment, and the accuracy of the detection result is high.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 1;
FIG. 4 is an enlarged view of a portion B of FIG. 1;
FIG. 5 is an enlarged view of a portion of the structure of FIG. 1 at C;
FIG. 6 is an enlarged view of a portion of the structure of FIG. 1 at D;
FIG. 7 is an isometric view of a variable channel body of the present invention;
FIG. 8 is an enlarged view of a portion E of FIG. 7;
FIG. 9 is a schematic view of the end face structure of the variable channel body of the present invention;
FIG. 10 is a pictorial view of a first verification mechanism of the present invention;
FIG. 11 is a pictorial view of a second certification mechanism in accordance with the present invention;
FIG. 12 is a pictorial representation of one of the viewing angles of a third certification mechanism in accordance with the present invention;
FIG. 13 is a pictorial representation of another perspective of a third certification mechanism in accordance with the present invention;
shown in the figure:
1. the water storage tank comprises a water storage tank, 2, a water pump, 3, a small-pipe-diameter water pipeline, 4, a standard small-pipe-diameter pipeline flowmeter, 5, a switch valve, 6, a head-end water collecting tank, 7, a water outlet, 8, a reducer union, 9, a mounting disc, 10, a large-pipe-diameter water pipeline, 11, an electric roller frame, 12, a tail-end water collecting tank, 13, a drainage pipeline, 14, a valve switch, 15, a force dissipating water tank, 16, a water diversion pipe, 17, a fixed open channel, 18, a bottom support frame, 19, a side support frame, 20, a sliding seat, 21, an angle adjusting oil cylinder, 22, a channel width adjusting oil cylinder, 23, a water inlet, 24, a drainage tank, 25, an electric flap gate, 26, a water inlet, 27, a lifting oil cylinder, 28, a containing tank, 29, a bracket, 30, a pressing rod, 31, a cross arm, 32, a bidirectional oil cylinder, 33 and waterproof cloth.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1 to 13, the present invention includes a first certification mechanism for detecting a small-diameter pipe flow meter, a second certification mechanism for detecting a large-diameter pipe flow meter, and a third certification mechanism for detecting an open channel flow meter, which are arranged in order in a water flow transport direction.
The first calibrating mechanism comprises a water storage tank 1 which supplies water through a water pump 2, the water storage tank 1 is connected with a head end water collecting tank 6 through a plurality of small-diameter water conveying pipelines 3, and a water outlet 7 is arranged on the head end water collecting tank 6. All connect standard small-diameter pipe flowmeter 4 on every small-diameter water pipe 3, all connect on every small-diameter water pipe 3 and wait to examine small-diameter pipe flowmeter, the standard small-diameter pipe flowmeter 4 of connecting on same root small-diameter water pipe 3 with wait to examine small-diameter pipe flowmeter model and correspond. Each small-pipe-diameter water conveying pipeline 3 is connected with a switch valve 5 and a pipeline emptying valve, and the switch valve 5 is adjacent to a head-end water collecting tank 6. The switching valve 5 can realize the switching of the corresponding small-caliber water conveying pipeline 3, and the selective use of a plurality of small-caliber water conveying pipelines 3 is realized. The pipe evacuation valve may evacuate water in the pipe after the detection. The small-diameter pipeline flowmeter to be detected is abutted with the small-diameter water pipeline 3 through a flange and then fixed through a bolt, the small-diameter pipeline flowmeter to be detected is installed on the small-diameter water pipeline 3 during detection, and the small-diameter pipeline flowmeter to be detected is detached after the detection is finished.
In this embodiment, there are four small-diameter water pipes 3 with a diameter of 500 mm, two small-diameter water pipes 3 with a diameter of 400 mm, and one small-diameter water pipe 3 with a diameter of 300 mm.
The second verification mechanism comprises a tail end water collecting tank 12, a water inlet 26 is formed in the tail end water collecting tank 12, a plurality of large-pipe-diameter water conveying pipelines 10 with different pipe diameters are arranged between the tail end water collecting tank 12 and the head end water collecting tank 6, and a large-pipe-diameter pipeline flowmeter to be detected, with the pipe diameters corresponding to each large-pipe-diameter water conveying pipeline 10, is connected to each large-pipe-diameter water conveying pipeline 10. A plurality of large-diameter water pipes 10 are assembled together through two mounting discs 9 and are circumferentially arranged on the mounting discs 9. The mounting plate 9 is driven by a power mechanism to drive a plurality of large-diameter water pipelines 10 to rotate. The two ends of each large-diameter water conveying pipeline 10 are connected with reducing joints 8, wherein the reducing joint 8 at one end is in butt joint with a water outlet 7 on the head end water collecting tank 6, and the reducing joint 8 at the other end is in butt joint with a water inlet 26 on the tail end water collecting tank 12. The reducing joint 8, the water outlet 7 and the water inlet 26 are all provided with flanges, the flange of the reducing joint 8 is connected with the flange of the water outlet 7 through bolts after being in butt joint, and the flange of the reducing joint 8 is connected with the flange of the water inlet 26 through bolts after being in butt joint.
The tail end water collecting tank 12 is connected with a water diversion pipe 16, the water diversion pipe 16 is connected with a fixed open channel 17, and the width and the gradient of the fixed open channel 17 are fixed values.
In this embodiment, there are one large-diameter water pipe 10 with a diameter of 1200 mm, one large-diameter water pipe 10 with a diameter of 1400 mm, one large-diameter water pipe 10 with a diameter of 1600 mm, one large-diameter water pipe 10 with a diameter of 1800 mm, and one large-diameter water pipe 10 with a diameter of 2000 mm.
The power mechanism comprises two sets of electric roller frames 11, the electric roller frames 11 are of the existing structure, the two mounting discs 9 are respectively placed on the two sets of electric roller frames 11, the two sets of electric roller frames 11 drive the mounting discs 9 to rotate, and then the rotation of the large-diameter water conveying pipelines 10 is realized.
When the small-caliber pipeline flowmeter is detected, the flow data acquired by the standard small-caliber pipeline flowmeter on the same small-caliber water pipeline and the flow data acquired by the small-caliber pipeline flowmeter to be detected are compared, and the accuracy of the small-caliber pipeline flowmeter to be detected can be obtained.
When the large-diameter pipeline flowmeter is detected, taking a 1600 mm large-diameter pipeline flowmeter as an example, a small-diameter water pipeline 3 with the diameter of 500 mm, two small-diameter water pipelines 3 with the diameter of 400 mm, a small-diameter water pipeline 3 with the diameter of 300 mm and the rest small-diameter water pipelines 3 are all closed. Then the 1600 mm large-diameter pipeline flowmeter is arranged on a large-diameter water pipeline 10 with the diameter of 1600 mm, and then the mounting disc 9 rotates under the driving of the power mechanism, and the large-diameter water pipeline 10 with the diameter of 1600 mm is turned to be in butt joint with the water outlet 7 and the water inlet 26. The water in the head end water collecting tank 6 enters the 1600 mm large-diameter water conveying pipeline 10, and the flow data is obtained by the 1600 mm large-diameter pipeline flow meter. The flow data obtained by a 500 mm small-diameter pipeline flowmeter, the flow data obtained by two 400 mm small-diameter pipeline flowmeters, the sum of the flow data obtained by a 300 mm small-diameter pipeline flowmeter and the flow data obtained by a 1600 mm large-diameter pipeline flowmeter are compared, and the metering accuracy of the 1600 mm large-diameter pipeline flowmeter can be verified.
The third verification mechanism comprises a force eliminating water tank 15, a drainage groove 24 and a variable channel main body, the variable channel main body is located between the force eliminating water tank 15 and the drainage groove 24, the force eliminating water tank 15 is connected with the tail end water collecting tank 12 through a plurality of drainage pipelines 13, and each drainage pipeline 13 is connected with a valve switch 14. The inside of the power dissipation water tank 15 is provided with downcomers (not marked in the figure) which correspond to the drainage pipelines 13 in number and are vertically arranged, the upper end of each downcomer is fixed with the top surface of the power dissipation water tank 15, the lower end of each downcomer is spaced from the bottom surface of the power dissipation water tank 15, and each drainage pipeline 13 is correspondingly connected with one downcomer. The stilling water tank 15 is provided with a drain port for draining water to the variable channel main body. The water in the end water collecting tank 12 is discharged into the force eliminating water tank 15 through the sewer pipe, and the impact force of the discharged water can be effectively reduced because the water is discharged downwards. The drainage channel 24 is provided with a water inlet 23 into which water in the variable channel main body enters, the drainage channel 24 is provided with an electric flap gate 25 for controlling drainage, and the electric flap gate 25 has a conventional structure.
As shown in fig. 7, 8 and 9, the variable channel main body includes two channel bottoms and two channel walls, the two channel walls are respectively located on the two channel bottoms, an accommodating groove 28 is disposed between the two channel bottoms along the extending direction of the variable channel main body, the distance between the two channel walls is adjustable, the included angle between each channel wall and the corresponding channel bottom is adjustable, and the height of the head end and the tail end of each channel bottom is adjustable.
Each channel bottom comprises a bottom support frame 18 of a surface covering panel, each channel wall comprises a side support frame 19 of a surface covering panel, each side support frame 19 is connected with the bottom support frame 18 by an adjusting device. The adjusting device comprises a plurality of groups of adjusting mechanisms which are sequentially arranged along the extending direction of the variable channel main body; each group of adjusting mechanisms comprises a sliding seat 20 which is in sliding connection with a bottom support frame 18, a sliding groove for the sliding seat 20 to slide is arranged on the bottom support frame 18, the lower part of a side support frame 19 is hinged with one end of the sliding seat 20, a push rod of an angle adjusting oil cylinder 21 is hinged with the upper part of the side support frame 19, and a cylinder seat of the angle adjusting oil cylinder 21 is hinged with the other end of the sliding seat 20. The cylinder seat of the canal width adjusting cylinder 22 is fixedly connected with the bottom support frame 18, and the push rod of the canal width adjusting cylinder 22 is fixedly connected with the sliding seat 20. The adjustment of the distance between two canal walls can be realized by controlling the canal width adjusting oil cylinder 22, and the adjustment of the angle between the canal wall and the corresponding canal bottom can be realized by controlling the angle adjusting oil cylinder 21.
The two sides of the waterproof cloth 33 are respectively fixed on the two canal walls, the middle part of the waterproof cloth 33 covers the canal bottom and covers the accommodating groove 28, and a cloth accommodating mechanism is arranged in the accommodating groove 28. The cloth collecting mechanism comprises a bracket 29 which is fixed with the bottom surface of the containing groove 28 and is arranged along the extending direction of the variable channel main body, two sides of the bracket 29 are respectively provided with a pressing rod 30, a gap for the waterproof cloth 33 to fall into is reserved between each pressing rod 30 and the bottom support frame 18, and the two pressing rods 30 are connected with the bracket 29 through a support device. The supporting device comprises a plurality of bidirectional oil cylinders 32 and a plurality of cross arms 31, the bidirectional oil cylinders 32 and the cross arms 31 are arranged at intervals, and two push rods of each bidirectional oil cylinder 32 are fixedly connected with the two pressing rods 30 respectively. Each cross arm 31 comprises a first rotating arm and a second rotating arm, and the first rotating arm and the second rotating arm are hinged; one end of the first rotating arm is hinged with one of the pressing rods 30, and the other end of the first rotating arm is connected with the other pressing rod 30 in a sliding manner; one end of the second rotating arm is hinged with one of the compressing rods 30, and the other end of the second rotating arm is connected with the other compressing rod 30 in a sliding way. The sliding connection mode here is: the compressing rod 30 is provided with a sliding groove, a sliding block is arranged in the sliding groove, and the first rotating arm and the second rotating arm are both connected with the sliding block. The sliding connection form is a sliding form commonly used by a cross lifting structure.
When the distance between two canal walls diminishes, two canal walls are close to storage tank 28, and two canal walls promote tarpaulin 33 for the unnecessary part of tarpaulin 33 falls into in the both sides clearance, and after the position of two canal walls was transferred, operation two-way hydro-cylinder 32 made two compressing rods 30 crowded tightly with the tarpaulin 33 that falls into in the both sides clearance, also sealed the tarpaulin 33 in the clearance promptly, avoided water to enter into in the tarpaulin 33 in the clearance. In order to prevent the waterproof cloth 33 above the accommodating groove 28 from sinking due to the gravity of water, a cover plate is fastened to the accommodating groove 28, and the cloth accommodating mechanism is located below the cover plate and connected to the bracket 29. Gaps for the waterproof cloth 33 to fall into are reserved between the cover plate and the bottom support frame 18.
The head and tail ends of each bottom support frame 18 are respectively provided with a lifting oil cylinder 27, the head and tail end fall height of the channel bottom can be adjusted by adjusting the lifting oil cylinders 27, on one hand, the head and tail end fall height of the channel bottom can simulate the fall of an actual water channel, and on the other hand, the water flow speed can be adjusted.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a flow verification system that standard table detected and variable open channel detection and combine together which characterized in that: the system comprises a first verification mechanism for detecting the small-diameter pipeline flowmeter, a second verification mechanism for detecting the large-diameter pipeline flowmeter and a third verification mechanism for detecting the open channel flowmeter, wherein the first verification mechanism, the second verification mechanism and the third verification mechanism are sequentially arranged in the water flow conveying direction.
2. The flow verification system of claim 1, wherein the flow verification system combines a stopwatch test and a variable open channel test, and further comprises: the first calibration mechanism comprises a water storage tank which supplies water through a water pump, the water storage tank is connected with the head end water collecting tank through a plurality of small-pipe-diameter water conveying pipelines, and a water outlet is formed in the head end water collecting tank; and each small-diameter water pipeline is connected with a standard small-diameter pipeline flowmeter, and each small-diameter water pipeline is connected with a small-diameter pipeline flowmeter to be detected.
3. The flow verification system according to claim 2, wherein the flow verification system combines a stopwatch test and a variable open channel test, and further comprises: the second calibrating mechanism comprises a tail water collecting tank, a water inlet is formed in the tail water collecting tank, a plurality of large-diameter water conveying pipelines with different pipe diameters are arranged between the tail water collecting tank and a head water collecting tank, and each large-diameter water conveying pipeline is connected with a large-diameter pipeline flowmeter to be detected, wherein the pipe diameter of each large-diameter water conveying pipeline corresponds to that of the large-diameter pipeline flowmeter; a plurality of large-diameter water pipelines are assembled together through two mounting discs and are arranged on the mounting discs in a circumferential direction; the mounting disc is driven by a power mechanism to drive a plurality of large-diameter water pipelines to rotate.
4. A combined meter calibration system according to claim 3 and variable open channel calibration system wherein: the two ends of each large-diameter water pipeline are connected with reducing joints, wherein the reducing joint at one end is in butt joint with a water outlet on the head end water collecting tank, and the reducing joint at the other end is in butt joint with a water inlet on the tail end water collecting tank.
5. The flow verification system of claim 1, wherein the flow verification system combines a stopwatch test and a variable open channel test, and further comprises: the third calibrating mechanism comprises a stilling water tank, a drainage groove and a variable channel main body, the variable channel main body is positioned between the stilling water tank and the drainage groove, the stilling water tank is connected with a tail end water collecting tank through a plurality of drainage pipelines, and the stilling water tank is provided with a drainage port for draining water to the variable channel main body; the drainage groove is provided with a water inlet for water in the variable channel main body to enter, and the drainage groove is provided with an electric flap gate for controlling drainage.
6. The flow verification system according to claim 5, wherein the flow verification system combines a stopwatch test and a variable open channel test, and further comprises: the variable canal main body comprises two canal bottoms and two canal walls, the two canal walls are respectively positioned on the two canal bottoms, an accommodating groove arranged along the extending direction of the variable canal main body is arranged between the two canal bottoms, the distance between the two canal walls is adjustable, the included angle between each canal wall and the corresponding canal bottom is adjustable, and the height of the head end and the tail end of each canal bottom is adjustable.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235109A (en) * | 2022-01-25 | 2022-03-25 | 东平力创科技有限公司 | Three-dimensional adjustable variable open channel flow calibrating device |
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