Detection method and device for electromechanical reading detection of intelligent water meter

Abstract

The invention discloses a detection method and device for electromechanical reading detection of an intelligent water meter, and the method comprises the steps: enabling an air source adaptive to the air consumption of a detected water meter to enter a shunting assembly, blowing the air flow entering the shunting assembly into a water inlet pipe section of the detected water meter, enabling a meter core of the detected water meter to rotate, and obtaining electromechanical measurement data; and when the overflowing metering of the water meter to be detected at the station reaches a preset value, the rotary disc rotates by a preset angle and enters the next station to circularly blow until the middle station and the final station. According to the detection method and device for electromechanical reading detection of the intelligent water meter, a novel structural design is adopted, when the overflow metering of the detected water meter at one station reaches a preset value, the rotary disc rotates by a preset angle, and the rotary disc enters the next station to circularly blow until the intermediate station and the final station; and the reading device respectively reads the initial mechanical count and electronic count, the intermediate value reading and the final station electromechanical reading of the water meter to be detected, so as to identify the consistency of the positive rotation and negative rotation metering electromechanical counts of the water meter to be detected.

Description

Technical Field

[0001] The present invention relates to the technical field of water meter reading detection, in particular to a detection method and device for electromechanical reading detection of an intelligent water meter. Background Art

[0002] There are two methods for counting the amount of water flowing through smart water meters: mechanical direct reading and telecommunications uploaded reading. According to the water meter identification regulations, the errors of the two readings should be within the specified requirements. For this reason, water meter manufacturers must identify the consistency of electromechanical metering readings before the water meters leave the factory.

[0003] In the prior art, a Chinese patent with application number CN201910090567.5 discloses a pointer water meter reading detection method based on deep learning, which realizes large-scale pointer water meter dial detection and effectively solves the problem that the dial pointer is short and difficult to accurately detect, so it has good practical application value.

[0004] As another example in the prior art, a Chinese patent with application number CN202110309083.2 discloses a water meter pointer reading recognition method based on target detection and binary image detection. The deflection angle of the pointer is calculated by a straight line determined by two points and the unit conversion is performed in combination with the category information of the pointer. Finally, the correct reading of the water meter pointer is read out.

[0005] As another example in the prior art, Chinese patent application number CN201110031563.3 discloses a mechanical water meter accuracy detection device, including a water meter detection operating stand and a plum blossom finger speed detection device having the same number and structure as the water meters.

[0006] Based on the above materials, it can be seen that in the prior art, the purpose of checking whether the readings are accurate is generally achieved by testing the water meter before leaving the factory. However, in actual use, the detection method in the prior art is relatively simple and cannot achieve a comprehensive detection of the water meter (such as being unable to identify the "consistency" of the forward and reverse metering electromechanical counting of the water meter being tested). Summary of the invention

[0007] The object of the present invention is to provide a detection method and device for detecting electromechanical readings of a smart water meter, so as to solve the problem of incomplete detection mentioned in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a detection method and device for detecting the electromechanical readings of an intelligent water meter, wherein an air source corresponding to the gas consumption of the water meter under test enters the diversion component, and the airflow entering the diversion component is blown into the water inlet pipe section of the water meter under test, so that the core of the water meter under test rotates to obtain mechanical and electrical metering data. When the overcurrent measurement of the water meter under test at this station reaches a predetermined value, the turntable rotates through a predetermined angle and enters the next station for a cyclic blowing number until the intermediate station and the final station, and the reading device reads the initial mechanical count and electronic count of the water meter under test, the intermediate value reading and the electromechanical reading of the final station respectively, so as to realize the "consistency" identification of the forward and reverse metering electromechanical counts of the water meter under test.

[0009] Preferably, the gas supply of the gas source is adjustable and matches the count of the inspected water meter, and the gas supply of the gas source is calculated as follows: Assume that the total flow volume required for water meter identification is (m³), same direction blowing number workstations, and the stay time at each workstation is (s), the average flow rate of each branch pipe is , then: ; ; Consider gas supply efficiency , then the gas supply required by the gas source is for: .

[0010] Preferably, a flexibly deformable compensating flow stabilizer is installed at the upper end of the flow diversion assembly, a spring is installed at the upper part of the compensating flow stabilizer, and the stiffness of the spring should be adapted to the pressure difference change of the water meter under inspection. The spring stiffness is calculated as follows: Assume that the effective area of ​​the compensating flow stabilizer plate compressed gas is A, and the pressure difference required for water meter detection is , the compensation flow stabilizer plate stroke is , then: ; The required spring stiffness is: .

[0011] Preferably, the inspected water meter is reinforced on a fixing fixture installed on the turntable at one time, and reading sensors are installed on the turntable at the starting monitoring position, the middle monitoring position and the ending monitoring position respectively. The mechanical and electronic reading values ​​of the inspected water meter are read and uploaded to the control system for calculation. The "consistency" of the electromechanical count during forward flow can be determined from the starting position to the middle position, and the "consistency" of the electromechanical count during reverse flow can be determined from the middle position to the ending position. If necessary, the gas circuit system is adjusted to realize the "consistency" identification of the one-way metering electromechanical count at the starting position, the middle position and the ending position.

[0012] Preferably, it includes a supporting base, a turntable, a fixing fixture, a water meter to be inspected, an air storage box, a rotary motor, a diversion assembly, a cylinder assembly, an air receiving pipe, and a rotating base, wherein the air storage box is fixedly installed above the supporting base, and the turntable is rotatably installed above the air storage box.

[0013] Preferably, the flow diversion component is divided into a cylinder, a compensating flow stabilizer and an air outlet pipe, the compensating flow stabilizer is fixedly installed on the upper end of the cylinder, and the cylinder is configured as a conical structure, and the air outlet pipes are evenly spaced on the outer surface of the upper end of the cylinder.

[0014] Preferably, an air receiving pipe corresponding to the air outlet pipe is fixedly installed inside the rotating disk, and the air receiving pipe is connected to the water inlet pipe section of the water meter under inspection.

[0015] Preferably, a cylinder assembly is fixedly mounted on the upper surface of the support base, and the cylinder assembly includes a mounting plate, a support plate, an electric slider and a rotary cylinder.

[0016] Preferably, the support plate is fixedly connected to the mounting plate, and an up-and-down sliding structure is formed between the electric slider and the support plate, and the electric slider is fixedly mounted to the rotary cylinder.

[0017] Preferably, the positions of the rotating cylinder and the rotating base correspond to each other, and the rotating base is located between the fixed fixture and the turntable, and the fixed fixture forms a rotating structure through the rotating base and the turntable.

[0018] Compared with the prior art, the invention has the following beneficial effects: the detection method and device for detecting the electromechanical reading of the smart water meter adopts a new structural design, and its specific contents are as follows: 1. The gas source that matches the gas consumption of the water meter under test enters the diversion component. The gas flow entering the diversion component is blown into the water inlet pipe section of the water meter under test, so that the core of the water meter under test rotates to obtain mechanical and electrical metering data. The two data are compared with each other to determine the accuracy of the water meter reading; When the over-current measurement of the water meter under inspection at one station reaches a preset value, the turntable rotates through a preset angle and enters the next station for cyclic blowing until the intermediate station and the final station. The reading device reads the initial mechanical count and electronic count of the water meter under inspection, the intermediate value reading and the electromechanical reading of the final station respectively, to realize the "consistency" identification of the forward and reverse metering electromechanical counts of the water meter under inspection.

[0019] 2. The cylinder of the flow distribution component is set to a conical structure, which cooperates with the compensating flow stabilizing plate and spring above it to spray the airflow quantitatively and evenly. At the same time, the conical cylinder can reduce the consumption of compressed gas; Furthermore, a cylinder assembly is arranged above the supporting base, and an electric slider in the cylinder assembly slides outside the supporting plate to drive the rotating cylinder to move upward, so that the rotating cylinder cooperates with the rotating base, and drives the rotating base to rotate through the rotating airbag, thereby causing the fixing fixture to rotate, thereby changing the direction of the fixing fixture to realize forward and reverse detection of the water meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic structural diagram of the connection relationship between the flow splitter assembly and the air storage box of the present invention; Figure 3 This is a schematic diagram of the structure of the flow diversion component of the present invention; Figure 4 It is a schematic diagram of the structure of the cylinder assembly of the present invention; Figure 5 This is a schematic diagram of the connection relationship between the fixing fixture and the rotating disk of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at A in the middle.

[0021] In the figure: 1. Support base; 2. Turntable; 3. Fixing fixture; 4. Water meter to be inspected; 5. Air storage box; 6. Rotating motor; 7. Diverter assembly; 701. Cylinder; 702. Compensating flow stabilizer; 703. Air outlet pipe; 8. Cylinder assembly; 801. Mounting plate; 802. Support plate; 803. Electric slider; 804. Rotating cylinder; 9. Air receiving pipe; 10. Rotating base. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-Figure 3 In order to achieve the purpose of comprehensive detection of water meters, this embodiment provides the following technical solutions: First, an air source corresponding to the air consumption of the water meter 4 under test enters the diversion component 7, and the air flow entering the diversion component 7 is blown into the water inlet pipe section of the water meter 4 under test, so that the core of the water meter 4 under test rotates to obtain mechanical and electrical metering data. When the overcurrent measurement of the water meter 4 under test at this station reaches a predetermined value, the turntable 2 rotates through a predetermined angle and enters the next station for a cyclic blowing number until the intermediate station and the final station. The reading device reads the initial mechanical count and electronic count of the water meter 4 under test, the intermediate value reading and the final station electromechanical reading respectively, so as to realize the "consistency" identification of the forward and reverse metering electromechanical counts of the water meter 4 under test.

[0024] The gas supply of the gas source is adjustable and matches the count of the water meter 4 under inspection, and the gas supply of the gas source is calculated as follows: Assume that the total flow volume required for water meter identification is (m³), same direction blowing number workstations, and the stay time at each workstation is (s), the average flow rate of each branch pipe is , then: ; ; Consider gas supply efficiency , then the gas supply required by the gas source is for: .

[0025] The upper end of the flow divider assembly 7 is provided with a flexibly deformable compensation flow stabilizer 702, and the upper part of the compensation flow stabilizer 702 is provided with a spring, and the stiffness of the spring should be adapted to the pressure difference change of the water meter 4 under inspection. The spring stiffness is calculated as follows: Assume that the effective area of ​​the compressed gas of the compensation stabilizer plate 702 is A, and the pressure difference required for water meter detection is , the stroke of the compensation stabilizer plate 702 is , then: ; The required spring stiffness is: .

[0026] The inspected water meter 4 is reinforced once on the fixing fixture 3 installed on the rotating disk 2, and reading sensors are respectively installed at the starting monitoring position, the middle monitoring position and the ending monitoring position on the rotating disk 2. The mechanical and electronic reading values ​​of the inspected water meter 4 are read and uploaded to the control system for calculation. The "consistency" of the electromechanical counting in the forward direction overcurrent can be determined from the starting position to the middle position, and the "consistency" of the electromechanical counting in the reverse direction overcurrent can be determined from the middle position to the ending position. If necessary, the gas circuit system is adjusted to realize the "consistency" identification of the one-way metering electromechanical counting in the starting position, the middle position and the ending position.

[0027] Example 2: Please refer to Figure 1-Figure 6 The present embodiment provides the following technical solutions: a supporting base 1, a rotating disk 2, a fixing fixture 3, a water meter to be inspected 4, an air storage box 5, a rotating motor 6, a flow dividing assembly 7, a cylinder assembly 8, an air receiving pipe 9, and a rotating base 10. The air storage box 5 is fixedly installed above the supporting base 1, and the rotating disk 2 is rotatably installed above the air storage box 5. The flow dividing assembly 7 is divided into a cylinder 701, a compensating flow stabilizing plate 702 and an air outlet pipe 703. The compensating flow stabilizing plate 702 is fixedly installed on the upper end of the cylinder 701, and the cylinder 701 is set to a conical structure, and the air outlet pipes 703 are evenly spaced and distributed on the outer surface of the upper end of the cylinder 701. An air receiving pipe corresponding to the air outlet pipe 703 is fixedly installed inside the rotating disk 2. Tube 9, and the air receiving tube 9 is connected to the water inlet pipe section of the inspected water meter 4, a cylinder assembly 8 is fixedly installed on the upper surface of the support base 1, and the cylinder assembly 8 includes a mounting plate 801, a support plate 802, an electric slider 803 and a rotating cylinder 804, the support plate 802 is fixedly connected to the mounting plate 801, and the electric slider 803 and the support plate 802 form an up and down sliding structure, and the electric slider 803 and the rotating cylinder 804 are fixedly installed, the positions of the rotating cylinder 804 and the rotating base 10 correspond to each other, and the rotating base 10 is located between the fixed fixture 3 and the turntable 2, and the fixed fixture 3 forms a rotating structure through the rotating base 10 and the turntable 2.

[0028] When using the device, first, the water meter 4 to be inspected is placed on the fixing fixture 3 inside the rotating disk 2 in sequence, and the water meter 4 to be inspected is clamped and fixed by the fixing fixture 3, and then the diversion component 7 is opened, and the compressed gas in the air storage box 5 enters the diversion component 7, and then the air outlet pipe 703 is opened to spray the compressed gas, and the sprayed gas enters the air receiving pipe 9, and finally enters the water inlet pipe section of the water meter 4 to be inspected from the air receiving pipe 9, and the air flow is used to drive the components inside the water meter 4 to rotate, so that the water meter 4 to be inspected displays data. After the inspection of the water meter 4 to be inspected at one station is completed, the rotary motor 6 is turned on to drive the rotating disk 2 to rotate, and the next water meter 4 to be inspected is rotated to the inspection station for inspection; Before the inspection, the electric slider 803 is turned on according to actual needs, so that the electric slider 803 slides outside the support plate 802, and the electric slider 803 drives the rotating cylinder 804 to move upward synchronously, and finally the rotating cylinder 804 is moved to the matching position of the rotating base 10, and the rotating base 10 is driven by the rotating cylinder 804 to rotate, so that the rotating base 10 drives the fixing fixture 3 to rotate 180 degrees, thereby realizing the backblowing inspection of the water meter 4 under inspection.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection method for detecting electromechanical readings of a smart water meter, characterized in that: An air source adapted to the air consumption of the water meter (4) under test enters the flow splitter assembly (7), and the air flow entering the flow splitter assembly (7) is blown into the water inlet pipe section of the water meter (4) under test, so that the core of the water meter (4) under test rotates to obtain mechanical and electrical metering data. When the overflow metering of the water meter (4) under test at this station reaches a predetermined value, the rotary disk (2) rotates through a predetermined angle and enters the next station to cycle the blowing number until the intermediate station and the final station. The reading device reads the initial mechanical count and electronic count of the water meter (4) under test, the intermediate value reading and the final station electromechanical reading respectively, thereby realizing the "consistency" identification of the forward and reverse metering electromechanical counts of the water meter (4) under test.

2. A detection method for detecting electromechanical readings of a smart water meter according to claim 1, characterized in that: The gas supply volume of the gas source is adjustable and matches the count of the water meter (4) under inspection, and the gas supply volume of the gas source is calculated as follows: Assume that the total flow volume required for water meter identification is (m³), same direction blowing number workstations, and the stay time at each workstation is (s), the average flow rate of each branch pipe is , then: ； ； Consider gas supply efficiency , then the gas supply required by the gas source is for: 。 3. A detection method for detecting electromechanical readings of a smart water meter according to claim 1, characterized in that: The upper end of the flow diversion component (7) is provided with a flexibly deformable compensating flow stabilizing plate (702), the upper part of the compensating flow stabilizing plate (702) is provided with a spring, and the stiffness of the spring should be adapted to the pressure difference variation of the water meter (4) under inspection. The spring stiffness is calculated as follows: Assume that the effective area of ​​the compressed gas of the compensation stabilizer plate (702) is A, and the pressure difference required for water meter detection is , the stroke of the compensation stabilizer plate (702) is , then: ； The required spring stiffness is: .

4. A detection method for detecting electromechanical readings of a smart water meter according to claim 1, characterized in that: The water meter (4) to be inspected is reinforced on a fixing fixture (3) installed on the rotating disk (2) at one time. Reading sensors are respectively installed at the starting monitoring position, the middle monitoring position and the end monitoring position on the rotating disk (2). The mechanical and electronic reading values ​​of the water meter (4) to be inspected are read and uploaded to the control system for calculation. From the starting position to the middle position, the "consistency" of the electromechanical counts in the forward flow can be measured. From the middle position to the end position, the "consistency" of the electromechanical counts in the reverse flow can be measured. When necessary, the gas circuit system is adjusted to realize the "consistency" identification of the one-way metering electromechanical counts in the starting position, the middle position and the end position.

5. A device for detecting the electromechanical reading of a smart water meter according to claim 1, characterized in that: The invention comprises a supporting base (1), a rotating disk (2), a fixing fixture (3), a water meter to be inspected (4), an air storage box (5), a rotating motor (6), a flow dividing assembly (7), a cylinder assembly (8), an air receiving pipe (9), and a rotating base (10), wherein the air storage box (5) is fixedly mounted above the supporting base (1), and the rotating disk (2) is rotatably mounted above the air storage box (5).

6. A device for detecting the electromechanical reading of a smart water meter according to claim 5, characterized in that: The flow splitting assembly (7) is divided into a cylinder (701), a compensating flow stabilizing plate (702) and an air outlet pipe (703); the compensating flow stabilizing plate (702) is fixedly mounted on the upper end of the cylinder (701); the cylinder (701) is configured as a conical structure; and the air outlet pipes (703) are evenly spaced and distributed on the outer surface of the upper end of the cylinder (701).

7. A device for detecting the electromechanical reading of a smart water meter according to claim 6, characterized in that: An air receiving pipe (9) corresponding to the air outlet pipe (703) is fixedly installed inside the rotating disk (2), and the air receiving pipe (9) is connected to the water inlet pipe section of the water meter (4) to be inspected.

8. A device for detecting the electromechanical reading of a smart water meter according to claim 5, characterized in that: A cylinder assembly (8) is fixedly mounted on the upper surface of the support base (1), and the cylinder assembly (8) comprises a mounting plate (801), a support plate (802), an electric slider (803) and a rotary cylinder (804).

9. A device for detecting the electromechanical reading of a smart water meter according to claim 8, characterized in that: The support plate (802) is fixedly connected to the mounting plate (801), and an up-and-down sliding structure is formed between the electric slider (803) and the support plate (802), and the electric slider (803) and the rotary cylinder (804) are fixedly mounted.

10. A device for detecting the electromechanical reading of a smart water meter according to claim 8, characterized in that: The positions of the rotating cylinder (804) and the rotating base (10) correspond to each other, and the rotating base (10) is located between the fixed clamp (3) and the rotating disk (2), and the fixed clamp (3) forms a rotating structure through the rotating base (10) and the rotating disk (2).

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