CN216050195U - Water meter calibration system - Google Patents
Water meter calibration system Download PDFInfo
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- CN216050195U CN216050195U CN202122266341.1U CN202122266341U CN216050195U CN 216050195 U CN216050195 U CN 216050195U CN 202122266341 U CN202122266341 U CN 202122266341U CN 216050195 U CN216050195 U CN 216050195U
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Abstract
The utility model discloses a water meter calibration system, which comprises a detection platform, water supply equipment, a pressure resistance detection mechanism and a flow calibration mechanism, wherein the detection platform is used for detecting the pressure resistance of water; at least one row of bases is arranged on the detection table; a plurality of meter clamping devices are arranged on each row of bases at intervals along the same axial direction; the input end of the meter clamping device positioned at the foremost end in the water flow direction in each row of bases is hermetically communicated with the output pipe of the water supply equipment, and the output end of the meter clamping device positioned at the rearmost end in the water flow direction is hermetically communicated with the input end of the flow calibration mechanism; the flow calibration mechanism comprises a common flow calibration pipeline, a boundary flow calibration pipeline and an initial flow calibration pipeline; each calibration pipeline is provided with a flow control mechanism and a flowmeter; the method is characterized in that: the flowmeter is a glass rotor flowmeter; the flow control mechanism comprises an on-off valve and an opening control valve which are arranged in the calibration pipeline, and the opening control valve is a manual valve; and the meter calibration and the pressure resistance are completed at the same station. The utility model has the advantages of good universality and high testing efficiency.
Description
Technical Field
The utility model belongs to the field of water meters, and particularly relates to a water meter calibration system.
Background
The photoelectric direct-reading water meter is an intelligent water meter convenient for centralized reading, realizes direct reading of data of a meter-recording character wheel by adopting an absolute coding mode, has the characteristics of high metering precision, small initial flow and the like, can be matched with intelligent meter reading system equipment to finish intelligent reading of water meter data of residents in a residential area, is convenient and accurate to use, and can realize data sharing by networking with a settlement center. Is favored by the market.
The photoelectric direct-reading water meter needs to be calibrated before leaving the factory: whether the flow value is in an allowable error range or not needs to be detected under the common flow and the boundary flow; and whether the plum-blossom needle can continuously rotate or not is observed under the initial flow so as to judge whether the water meter is qualified or not.
The patent with the publication number of CN209706914U in the prior art discloses a water meter detection table and an intelligent meter calibration system, which comprises a table support for fixing a water meter to be calibrated, a meter tightening support fixedly arranged right above the table support, a sliding rail parallel to the table surface of the table support, a meter tightening device arranged on the sliding rail and moving along the sliding rail, and a meter tightening head of the meter tightening device capable of vertically extending downwards and tightly or loosely covering a copper cover of the water meter to be calibrated on the table support. The meter fastening device is arranged above the meter calibration device, so that the copper cover can be fastened or loosened during meter calibration, and the meter calibration is more convenient. The efficiency of school table is effectively improved, has reduced the error of school table.
In the prior art, the patent with the publication number of CN202511851U discloses a water meter detection table and an intelligent meter calibration system, wherein a flow calibration pipeline of the water meter detection table and the intelligent meter calibration system regulates the flow through an electric regulating valve.
However, the above "a water meter detects platform and intelligent school table system" still has the shortcoming that "a water meter large-traffic automatic checkout device" still exists: the universality is poor, and the specific reason is as follows: because the water meters of different models have different common flow, boundary flow and starting flow; above-mentioned "a water gauge detects platform and intelligent school table system"'s technical scheme can not change flow commonly used, demarcation flow and the flow of moving from beginning and be applicable to the water gauge of different models, need to have enough to meet the need to the next station after the water gauge calibration and carry out withstand voltage test, has enough to meet the need, clamping time is long, so only be applicable to and calibrate to single model water gauge, and the commonality is relatively poor, and the functionality is not strong, and is inefficient.
Based on this, the applicant considers to design a water meter calibration system with better universality.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the utility model are as follows: how to provide a water gauge school table system that commonality is better.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the water meter calibration system comprises a detection table, water supply equipment and a flow calibration mechanism;
at least one row of bases is arranged on the detection table; a plurality of meter clamping devices are arranged on each row of bases at intervals along the same axial direction, and a water meter detection station is formed between every two adjacent meter clamping devices; the input end of the meter clamping device positioned at the foremost end in the water flow direction in each row of bases is in sealed communication with the output pipe of the water supply equipment, and the output end of the meter clamping device positioned at the rearmost end in the water flow direction is in sealed communication with the input end of the flow calibration mechanism;
the flow calibration mechanism comprises three calibration pipelines which are connected in parallel, wherein the three calibration pipelines are a common flow calibration pipeline, a boundary flow calibration pipeline and an initial flow calibration pipeline; each calibration pipeline is provided with a flow control mechanism and a flowmeter; the method is characterized in that:
the flowmeter is a glass rotameter; the flow control mechanism comprises an on-off valve and an opening control valve which are arranged in a calibration pipeline, and the opening control valve is a manual valve.
Compared with the prior art, the water meter calibration system has the advantages that:
the system comprises a plurality of pipelines for common flow calibration, a plurality of pipelines for boundary flow calibration and a plurality of pipelines for initial flow calibration, wherein the pipelines for common flow calibration, the pipelines for boundary flow calibration and the pipelines for initial flow calibration are connected in parallel, and each pipeline is provided with a switch valve, an opening control valve and a glass flow rotor meter. Therefore, the water flow in the pipeline can be regulated and controlled by adjusting the opening control valve in the common flow calibration pipeline, the demarcation flow calibration pipeline and the initial flow calibration pipeline, the adjusted flow value can be checked and adjusted by the glass flow rotor meter, the flow calibration of the water meter with one type can be met by adjusting once, the pressure-resistant function is added, the turnover, clamping and water and air exhaust time of independent pressure-resistant test is saved, the universality is better, and the working efficiency is greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of a water meter calibration system of the utility model.
Fig. 2 is a schematic structural diagram of a water meter calibration system according to the present invention.
Fig. 3 is an enlarged view at X in fig. 2.
Labeled as:
a pressure-stabilizing input pipeline
B small flow water supply pipeline
C, detection table: d-clamp meter device
E switch valve, F opening control valve, G glass rotameter
H sensor placing table: h1 placing groove
I pressure cylinder
J control cabinet
K display device
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the specific implementation: as shown in fig. 1 to 3, the water meter calibration system includes a detection platform, a water supply device and a flow calibration mechanism;
at least one row of bases is arranged on the detection table; a plurality of meter clamping devices are arranged on each row of bases at intervals along the same axial direction, and a water meter detection station is formed between every two adjacent meter clamping devices; the input end of the meter clamping device positioned at the foremost end in the water flow direction in each row of bases is in sealed communication with the output pipe of the water supply equipment, and the output end of the meter clamping device positioned at the rearmost end in the water flow direction is in sealed communication with the input end of the flow calibration mechanism;
the flow calibration mechanism comprises three calibration pipelines which are connected in parallel, wherein the three calibration pipelines are a common flow calibration pipeline, a boundary flow calibration pipeline and an initial flow calibration pipeline; each calibration pipeline is provided with a flow control mechanism and a flowmeter;
the flowmeter is a glass rotameter; the flow control mechanism comprises an on-off valve and an opening control valve which are arranged in a calibration pipeline, and the opening control valve is a manual valve.
In practice, the flow calibration mechanism: the glass rotor flowmeter in the pipeline for common flow calibration is 1 DN25 rotor flowmeter; the glass rotameters in the demarcation flow calibration pipeline and the start flow calibration pipeline are both 1 DN15 rotameters and are used for setting the flow before the meter calibration test.
In practice, the opening control valve is located between the on-off valve and the flow meter.
In the technical scheme, each row of the bases is arranged in one-to-one correspondence with one set of the flow calibration mechanism.
Wherein, the switch valve is a pneumatic control ball valve; the opening control valve is a manual ball valve.
All ooff valves in this technical scheme all adopt gas accuse ball valve, so not only reducible pipeline's loss of pressure can also realize high-efficient operation control through with the host computer communication.
One of the water meter detection stations on each row of bases is used for installing a standard water meter;
still include flow detection mechanism, flow detection mechanism include with in every row of base the sensor support and the light sensor that water gauge detection station one-to-one set up, wherein, every the bottom of sensor support has a flat board, dull and stereotyped middle part is run through and is formed the light trap that can just be right plum blossom needle on the water gauge, dull and stereotyped last fixed surface has the support post, fixed mounting has on the support post light sensor, light sensor's luminous mouthful and acceptance aperture orientation the light trap, every light sensor's joint is connected with the main control circuit board in the switch board.
The detection principle of the flow detection mechanism in the technical scheme is as follows:
the plum-blossom needle of the water meter is a starting element of the water meter, and the rotation number of turns of the plum-blossom needle is detected to obtain the reading of the water meter, so that the high detection precision can be achieved. The number of turns of the plum-blossom needle is detected by the existing photoelectric pulse method, and the main means of the photoelectric pulse method is to arrange a reflection mark on the plum-blossom needle. The light source in the light sensor is irradiated on the plum-blossom needle, the plum-blossom needle can continuously reflect the light of the light source to the phototriode in the light sensor in the rotating process, the phototriode receives the light to generate a series of pulse current signals, and the metering of the plum-blossom needle can be read out by amplifying and converting the pulse current signals.
In the technical scheme, each water meter is provided with an optical sensor (not shown in the figure), the laser of the optical sensor is aligned to a plum-blossom needle of the water meter during testing, and whether the number of pulses generated by the optical sensors corresponding to the standard water meter and the measured water meter is consistent or not is compared, so that whether the flow detection of each measured water meter is accurate and qualified or not can be judged.
In the technical scheme, 1 standard water meter is arranged in each row of base, and in addition, 7 water meters to be tested can be clamped.
The flow detection mechanism further comprises a sensor placing table, the sensor placing table is of a long strip-shaped structure arranged along the length direction of the base, placing grooves corresponding to the optical sensors one to one are sequentially arranged on the upper surface of the sensor placing table along the length direction at intervals, and each placing groove is provided with a threading hole for the signal cable of each optical sensor to penetrate through.
By adopting the scheme, the optical sensors can be regularly and orderly placed on the sensor placing table, and the messy placement is effectively avoided; meanwhile, each optical sensor and each water meter detection station can be in one-to-one correspondence better, and relevance and accuracy of data acquisition are effectively guaranteed.
The detection table is of a long strip-shaped structure, and the sensor placing table is integrally installed and arranged on the rear side of the detection table in the width direction of the table board, so that the front side of the detection table in the width direction of the table board forms a water meter dismounting side.
Thus, the water meter can be conveniently disassembled and assembled on the water meter disassembling and assembling side, and the sensor support can be conveniently taken from the sensor placing table.
The water meter calibration system further comprises a pressurization mechanism, wherein the pressurization mechanism comprises switch valves respectively arranged at the input section and the output section of each row of bases;
the supercharging mechanism also comprises a supercharging loop connected with the input section or the output section of each row of bases in a sealing bypass mode, and the supercharging loop comprises a switch valve, a supercharging cylinder, a water inlet input loop, a supercharging output loop, a water return loop and a pressure detection meter;
the water inlet input loop is provided with a switch valve and is hermetically communicated with an input interface of the pressure cylinder, a water return interface of the pressure cylinder is communicated with the water return loop, and the water return loop is provided with the switch valve; the output interface of the pressure cylinder is hermetically communicated with a pressure output loop, a switch valve and the pressure detection meter are arranged in the pressure output loop, and a joint of the pressure detection meter is used for being connected with a main control circuit board in the control cabinet.
When the water-saving water meter is implemented, the water inlet input loop of the pressure cylinder is connected with the variable-frequency voltage-stabilizing water pump, the pressure-increasing output loop is connected with the water meter, and the output end of the water return loop is communicated with the water return tank.
The supercharging mechanism: the method is used for the pressure resistance test of the water meter; during testing, the pressure applied to the water meter is monitored and set to be 1.7 MPa.
After the pressurization mechanism is arranged, the water meter calibration system in the technical scheme can conveniently finish the calibration of the water meter flow; it is also possible to perform a pressure resistance test on the meter immediately after the flow calibration. The detection function of the water meter calibration system is expanded, and the comprehensive test efficiency of the water meter is remarkably improved.
The water supply equipment comprises a water storage tank, a variable-frequency voltage-stabilizing water pump and an industrial gas source;
the water storage tank is of a sealed tank body structure, an input interface of the variable-frequency voltage-stabilizing water pump is communicated with the bottom in the water storage tank through a pipeline provided with a switch valve, and an output interface of the variable-frequency voltage-stabilizing water pump outputs stable water flow outwards through an output pipe;
and the output interface of the industrial gas source is hermetically communicated with the top in the water storage tank.
When in implementation, the industrial air source is a high-pressure air storage tank or an air compressor for supplying 0.5MPa air source.
During implementation, the water storage tank is connected to an A voltage stabilization input pipeline in the figure 1 through a frequency conversion voltage stabilization water pump: the whole water supply system is ensured to be in a stable and stable state so as to ensure that the flow is stable when the meter is calibrated, and the pressure is set to be 1.1 MPa.
When the water supply device is in use, the pressure stabilizing output pipeline A (large flow) is opened, and the water supply device is also connected with a small flow water supply pipeline B with lower water pressure.
The water supply equipment can automatically adjust the output water pressure through the variable-frequency pressure-stabilizing water pump, so that the output water pressure value is constant, and the standard consistency of detection is ensured.
The water meter calibration system further comprises a control cabinet, an upper computer and a display device;
each switch valve is a pneumatic control ball valve, and respective control buttons are arranged on the control cabinet; the upper computer is installed in the control cabinet and is electrically connected with the electromagnetic control valves of the pneumatic control ball valves;
each switch valve is a pneumatic control ball valve and is connected with the control cabinet; the upper computer software is communicated with a main control circuit board in the control cabinet to realize the control of the switch valve;
the display device is provided with upper computer software and is connected with the main control circuit board through a serial port connecting wire.
After the control cabinet, the upper computer and the display device are arranged, the functions of the water meter calibration system can be more complete, and various tests of the water meter can be easily and efficiently completed through control.
The detection and use method of the water meter calibration system comprises the following steps:
1. a 220V alternating current power supply and a 0.5MPa industrial gas source are connected; opening a variable-frequency voltage-stabilizing water pump to keep a water source of a water meter calibration system in a 1.1MPa voltage-stabilizing state;
2. turning on a power switch, electrifying the detection system, and turning on an upper computer in the meter calibration system;
3. replacing a suitable meter clamping device (clamping tool) and a rubber pad on the detection table, and sequentially clamping the standard meter and 7 water detection meters in each row of bases on the detection table;
(shown in connection with fig. 1) adjusting the flow point: and the upper computer clicks a Q3 (common flow) flow point to adjust, at the moment, the valves 2, 3, 4 and 7 are opened, the hand-operated valve at the upper end of the corresponding glass rotameter is manually adjusted until the required flow point is adjusted, the corresponding electromagnetic valve is closed after the adjustment is finished, and the opening degree of the hand-operated valve is kept. Similarly, other flow points such as Q2 (boundary flow), start flow and the like are adjusted according to the method, wherein the valves 1, 3, 4 and 6 are opened when the Q2 (boundary flow) is adjusted, the valves 1, 3, 4 and 5 are opened when the start flow is adjusted, and the adjustment is only needed for 1 time before the test of each type of water meter.
5. And inputting the serial number of the water meter to be tested by scanning the gun scanning code, starting the water meter test, and starting the test system to run.
(shown in fig. 1) after the system is operated, the system is further preset to automatically open corresponding valves to start water supply and exhaust, after bubbles in the water meter are completely removed, the valves 3 and 4 are closed, the measured meter forms a closed space at the moment, the pressurization system opens the valves 9, 10 and 11 to start pressurization, the pressure maintaining test is started when the measured water is expressed to a pressure-resistant test point (1.7Mpa), and the valves 8, 9, 10, 11 and 12 are all closed during pressure maintaining; the pressure maintaining test time is 1 minute, and in the pressure maintaining process, if the pressure attenuation value of the pipe section of the water meter to be tested is less than or equal to 0.1MPa (the setting can be modified), then 7 tested water meters are judged to be all qualified; if the pressure attenuation value exceeds 0.1MPa within 1 minute, the upper computer displays meter calibration faults. After the pressure resistance test is finished, the system automatically releases the pressure, and the valves 8, 10 and 12 are opened during pressure release; and starting the flow test after the pressure relief is finished.
And 7, (shown in the combination of fig. 1) when different flows are tested, the system automatically opens different valves (the flow point step 4 is adjusted, and the flow is determined by the opening degree of the hand-operated valve). The Q3 (normal flow) test and the demagnetization test open valves 2, 3, 4, 7; test Q2 (demarcation flow) opens valves 1, 3, 4, 6; testing the initial flow to open the valves 1, 3, 4 and 5;
8. and after the test is finished, the upper computer displays the test result and automatically stores the test result in the database, the system can take the table after automatic pressure relief, the test is finished, the qualified table to be detected flows into the next procedure, and the unqualified table is sent for repair.
The function advantage of the water meter calibration system is as follows:
1. each row of bases of the detection table is 7 water meter detection stations. The two rows of bases are adopted in the scheme, so that 14 water meters can be verified at one time. And the two rows of pedestals are operated independently.
2. Increase the leakproofness withstand voltage test on the test table and detect the function, equipment can accomplish 0.5-2Mpa pressure test, and the machine presss from both sides partial bearing capacity of table pipeline: not less than 3 MPa. The pressure resistance is automatically controlled, the pressure is automatically stopped when the pressure reaches a set value, and the pressure is automatically released after the pressure resistance time is up, and the clamping is loosened.
3. Every 1 way increases 1 frequency conversion steady voltage water pump, improves and stabilizes the water pressure.
4. All switch valves of the detection table adopt pneumatic control ball valves, so that the pressure loss of the pipeline is reduced.
5. A plurality of glass flow rotor meters are added, and the automatic adjustment of the flow points of the meter table is changed into manual one-time adjustment. This improves the working efficiency.
6. The upper computer has the functions of storing, automatically counting and inquiring the check data.
7. Automatic detection is easier to realize, namely after the water meter to be detected is installed, the upper computer can automatically complete flow and pressure resistance tests after the system starts to operate according to a preset program. The detection efficiency is greatly improved.
The above is only a preferred embodiment of the present invention, and it should be noted that several modifications and improvements made by those skilled in the art without departing from the technical solution should also be considered as falling within the scope of the claims.
Claims (8)
1. The water meter calibration system comprises a detection table, water supply equipment and a flow calibration mechanism;
at least one row of bases is arranged on the detection table; a plurality of meter clamping devices are arranged on each row of bases at intervals along the same axial direction, and a water meter detection station is formed between every two adjacent meter clamping devices; the input end of the meter clamping device positioned at the foremost end in the water flow direction in each row of bases is in sealed communication with the output pipe of the water supply equipment, and the output end of the meter clamping device positioned at the rearmost end in the water flow direction is in sealed communication with the input end of the flow calibration mechanism;
the flow calibration mechanism comprises three calibration pipelines which are connected in parallel, wherein the three calibration pipelines are a common flow calibration pipeline, a boundary flow calibration pipeline and an initial flow calibration pipeline; each calibration pipeline is provided with a flow control mechanism and a flowmeter; the method is characterized in that:
the flowmeter is a glass rotameter; the flow control mechanism comprises an on-off valve and an opening control valve which are arranged in a calibration pipeline, and the opening control valve is a manual valve.
2. A water meter calibration system according to claim 1, further comprising: the switch valve is a pneumatic control ball valve; the opening control valve is a manual ball valve.
3. A water meter calibration system according to claim 1, further comprising: one of the water meter detection stations on each row of bases is used for installing a standard water meter;
still include flow detection mechanism, flow detection mechanism include with in every row of base the sensor support and the light sensor that water gauge detection station one-to-one set up, wherein, every the bottom of sensor support has a flat board, dull and stereotyped middle part is run through and is formed the light trap that can just be right plum blossom needle on the water gauge, dull and stereotyped last fixed surface has the support post, fixed mounting has on the support post light sensor, light sensor's luminous entrance and receiving port orientation the light trap, every light sensor's joint is used for the interface connection who corresponds on with the host computer.
4. A water meter calibration system according to claim 3, further comprising: the flow detection mechanism further comprises a sensor placing table, the sensor placing table is of a long strip-shaped structure arranged along the length direction of the base, placing grooves corresponding to the optical sensors one to one are sequentially arranged on the upper surface of the sensor placing table along the length direction at intervals, and each placing groove is provided with a threading hole for the signal cable of each optical sensor to penetrate through.
5. The water meter calibration system according to claim 4, wherein: the detection table is of a long strip-shaped structure, and the sensor placing table is integrally installed and arranged on the rear side of the detection table in the width direction of the table board, so that the front side of the detection table in the width direction of the table board forms a water meter dismounting side.
6. A water meter calibration system according to claim 1, further comprising: the booster mechanism comprises switching valves arranged at the input section and the output section of each row of bases respectively;
the supercharging mechanism also comprises a supercharging loop connected with the input section or the output section of each row of bases in a sealing bypass mode, and the supercharging loop comprises a switch valve, a supercharging cylinder, a water inlet input loop, a supercharging output loop, a water return loop and a pressure detection meter;
the water inlet input loop is provided with a switch valve and is hermetically communicated with an input interface of the pressure cylinder, a water return interface of the pressure cylinder is communicated with the water return loop, and the water return loop is provided with the switch valve; the output interface of the pressure cylinder is hermetically communicated with a pressure output loop, a switch valve and the pressure detection meter are arranged in the pressure output loop, and the pressure detection meter is used for being connected with a main control circuit board in the control cabinet.
7. A water meter calibration system according to claim 1, further comprising: the water supply equipment comprises a water storage tank, a water pump and an industrial gas source;
the water storage tank is of a sealed tank body structure, an input interface of the water pump is communicated with the bottom in the water storage tank through a pipeline provided with a switch valve, and an output interface of the water pump outputs water flow outwards through an output pipe;
and the output interface of the industrial gas source is hermetically communicated with the top in the water storage tank.
8. A water meter calibration system according to claim 1, further comprising: the device also comprises a control cabinet, an upper computer and a display device;
each switch valve is a pneumatic control ball valve and is electrically connected with the control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122266341.1U CN216050195U (en) | 2021-09-16 | 2021-09-16 | Water meter calibration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122266341.1U CN216050195U (en) | 2021-09-16 | 2021-09-16 | Water meter calibration system |
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| CN216050195U true CN216050195U (en) | 2022-03-15 |
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| CN202122266341.1U Active CN216050195U (en) | 2021-09-16 | 2021-09-16 | Water meter calibration system |
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2021
- 2021-09-16 CN CN202122266341.1U patent/CN216050195U/en active Active
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