Assembly line type water meter automatic calibrating device

Abstract

The utility model discloses an assembly line type automatic water meter calibrating device which comprises a tray online and offline robot, a tray transmission line, a tandem type water meter calibrating assembly and a meter assembling and disassembling robot. The tray transmission line is provided with an upper line position and a lower line position; the tray on-line and off-line robot is used for grabbing a tray containing a to-be-detected meter from the to-be-detected meter storage area and placing the tray on an on-line position of the tray transmission line. The tray on-line and off-line robot is further used for grabbing the trays containing the detected meters from the off-line position of the tray conveying line and placing the trays in the detected meter storage area. The tray transmission line is used for transmitting a standard specification tray containing a meter to be detected to one side of the tandem water meter detection assembly; and the meter loading and unloading robot is used for grabbing the to-be-detected water meter in a tray located on one side of the tandem type water meter detection assembly to the measurement station section of the tandem type water meter detection assembly. The water meter feeding and discharging device can achieve automatic carrying of feeding and discharging of the water meter without manual carrying, and therefore the water meter verification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metrology, and particularly relates to a pipeline type automatic water meter verification device. Background Art

[0002] The verification of water meters includes 4 verification items, namely appearance, markings and seals, electronic device functions, tightness, and indication error.

[0003] At present, the domestic water meter verification devices have not achieved full automation, and mainly carry out verification manually or semi - manually. The installation, disassembly, handling, reading of the water meters to be verified, and the recording of verification data mainly rely on the manual operation of the verifiers; the workload of technical personnel is large, the work efficiency is low, and at the same time, misjudgment or omissions are likely to occur, making it difficult to ensure the accuracy of verification. In addition, the water meter verification devices are basically in the form of single sets. Each set of devices is configured with 2 - 10 meter positions. Each verifier uses a single set of devices for verification, that is, after manually installing 2 - 10 water meters to be verified for verification, the meters are disassembled after verification, and then the next batch of 2 - 10 water meters to be verified are verified. The arrangement of the verification meters completely depends on manual labor, seriously affecting the verification work efficiency. How to improve the water meter verification efficiency has become an urgent problem to be solved. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above - mentioned deficiencies of the prior art and provide a pipeline type automatic water meter verification device to improve the efficiency of water meter verification.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A pipeline type automatic water meter verification device includes a tray loading and unloading robot, a tray transmission line, a series - type water meter verification component, and a meter loading and unloading robot;

[0007] The tray transmission line is provided with a loading position and an unloading position; the tray loading and unloading robot is used to grab the tray containing the water meters to be verified from the storage area of the water meters to be verified and place it at the loading position of the tray transmission line; the tray loading and unloading robot is also used to grab the tray containing the verified water meters from the unloading position of the tray transmission line and place it in the storage area of the verified water meters;

[0008] The tray transmission line is used to transmit the standard - sized tray containing the water meters to be verified to the side of the series - type water meter verification component;

[0009] The meter loading and unloading robot is used to grab the water meter to be verified in the tray beside the series - type water meter verification component and place it on the measurement station section of the series - type water meter verification component; the meter loading and unloading robot is also used to grab the verified water meter on the station of the measurement section of the series - type water meter verification component and place it in the tray on the tray transmission line for containing the verified water meters.

[0010] Further, the series water meter verification assembly includes a water tank. The water outlet of the water tank is connected to the water inlet of the water pump. The water outlet of the water pump is connected to the water inlet of the inlet valve. The water outlet of the inlet valve is connected to the water inlet of the measurement station section. The water outlet of the measurement station section is connected to the water inlet of the flow regulating valve. The water outlet of the flow regulating valve is connected to the water inlet of the instantaneous flow indicator. The water outlet of the instantaneous flow indicator is connected to the water inlet of the measuring container. The measuring container is placed on an electronic scale. A drain valve is connected to the water outlet of the measuring container, and the drain valve is connected to the water tank. The measurement station section is used for serially placing a plurality of water meters to be verified and clamping them with a meter clamp. A collection terminal is arranged above each water meter to be verified. A temperature sensor is also installed in the pipeline of the measurement station section for real-time detection of the water temperature used in verification.

[0011] Further, a pressure stabilizing container is also installed in the pipeline connecting the water outlet of the water pump and the water inlet of the inlet valve.

[0012] Further, a filter screen is also arranged in the water tank.

[0013] Further, the upper position and the lower position are arranged in a vertically parallel manner or a horizontally side-by-side manner.

[0014] Further, two or more groups of the series water meter verification assemblies are provided, and the series water meter verification assemblies are arranged in parallel.

[0015] Further, the meter loading and unloading robot is a six-axis robot.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The pipeline-type automatic water meter verification device provided in this embodiment can realize automatic handling of loading and unloading of water meters without manual handling, thereby improving the water meter verification efficiency. Description of the Drawings

[0018] Figure 1 It is a schematic composition diagram of the pipeline-type automatic water meter verification device provided in the embodiment of the present utility model;

[0019] Figure 2 It is a schematic diagram of two measurement station sections arranged in parallel for the series water meter verification assembly;

[0020] Figure 3 It is a schematic diagram of the series water meter verification assemblies arranged in parallel;

[0021] In the figure: 1. Robot for loading and unloading trays of water meters; 2. Tray transmission line; 21. Loading position; 22. Unloading position; 3. Robot for loading and unloading water meters; 4. Series-connected water meter calibration assembly; 40. Pressure stabilizing container; 41. Water tank; 42. Water pump; 43. Inlet valve; 44. Flow regulating valve; 45. Instantaneous flow indicator; 46. Measuring container; 47. Drain valve; 48. Water meter clamp; 49. Acquisition terminal Detailed implementation manners

[0022] Embodiment:

[0023] The technical solutions of the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Refer to Figure 1 As shown, the automatic calibration device for pipeline water meters provided in this embodiment includes a robot 1 for loading and unloading trays of water meters, a tray transmission line 2, a series-connected water meter calibration assembly 4, and a robot 3 for loading and unloading water meters.

[0025] Among them, the tray transmission line 2 is provided with a loading position 21 and an unloading position 22, and the loading position 21 and the unloading position 22 are arranged parallel up and down or side by side left and right; the robot 1 for loading and unloading trays of water meters is used to grab the standard specification trays containing the water meters to be inspected from the storage area of the water meters to be inspected and place them at the loading position 21 of the tray transmission line; the robot 1 for loading and unloading trays of water meters is also used to grab the trays containing the inspected water meters from the unloading position 22 of the tray transmission line and place them in the storage area of the inspected water meters. In this way, the robot for loading and unloading trays of water meters can automatically complete the work of loading incoming materials and unloading after inspection, thus eliminating the need for manual handling.

[0026] The tray transmission line 2 is used to transmit the standard specification trays containing the water meters to be inspected to the side of the series-connected water meter calibration assembly. When the standard specification trays containing the water meters to be inspected are transmitted to the side of the series-connected water meter calibration assembly, the robot 3 for loading and unloading water meters grabs the water meters to be inspected in the trays to the measuring station of the series-connected water meter calibration assembly. When the calibration measurement of the water meters is completed, the robot 3 for loading and unloading water meters grabs the calibrated water meters at the measuring section of the series-connected water meter calibration assembly and places them in the trays for containing the inspected water meters on the tray transmission line until the trays are full. After the trays are full, they are moved to the direction of the unloading position of the transmission line through the transfer machine on the tray transmission line.

[0027] It can be seen that the automatic calibration device for pipeline water meters provided in this embodiment can realize automatic handling of loading and unloading of water meters without manual handling, thereby improving the calibration efficiency of water meters.

[0028] In a specific embodiment, the series water meter verification assembly 4 includes a water tank 41. The water outlet of the water tank 41 is connected to the water inlet of a water pump 42. The water outlet of the water pump 42 is connected to the water inlet of a water inlet valve 43. The water outlet of the water inlet valve 43 is connected to the water inlet of the measurement station section. The water outlet of the measurement station section is connected to the water inlet of a flow regulating valve 44. The water outlet of the flow regulating valve 44 is connected to the water inlet of an instantaneous flow indicator 45. The water outlet of the instantaneous flow indicator 45 is connected to the water inlet of a work meter 46 through a reversing valve. The work meter 46 is placed on an electronic scale. A water discharge valve 47 is connected to the water outlet of the work meter 46, and the water discharge valve 47 is connected to the water tank 41. The measurement station section is used for serially placing a number of water meters to be inspected and clamping them through a meter clamp 48. An acquisition terminal 49 is arranged above each water meter to be inspected. A temperature sensor is also installed in the pipeline of the measurement station section for real-time detection of the water temperature used in verification. The electronic scale is the original standard for water flow, and it can measure the water mass flowing into the work meter 46 through the electronic scale. In this embodiment, two high-precision electronic scales are used, which have the characteristics of high measurement accuracy, strong anti-overshoot ability, good stability, and long service life, and can ensure long-term stable operation. Specifically, the acquisition terminal uses an industrial camera, which can achieve pulse sampling and simultaneously extract the position information of the dial plum blossom petals and the red pointer.

[0029] The working principle of the series water meter verification assembly is as follows: Install the water meter to be inspected on the measurement station section, start the water pump, and open the flow regulating valve to make the liquid flow through the water meter to be inspected, the instantaneous flow indicator, and the work meter, and finally flow into the water tank. When the readings of the water meter to be inspected and the instantaneous flow indicator both stabilize to the flow rate at the verification flow point, at a certain moment t1, the electronic scale starts to work, and the reversing valve diverts the water flow into the work meter. Subsequently, at a certain moment t 1b starts to calculate the cumulative pulses of the water meter to be inspected. When the preset time arrives, at t 2b moment, stop calculating the cumulative pulses of the water meter to be inspected. Subsequently, at t2 moment, switch the reversing valve to divert the water flow to the water tank. After the verification at this flow point is completed, empty the water in the work meter into the water tank through the water discharge valve 47 to prepare for the verification at the next verification flow point. During the verification process, respectively record the initial value m0 and the final value m1 of the electronic scale and the cumulative pulse number P b of the water meter to be inspected, and combine the water temperature t measured by the temperature measurement system and the pulse equivalent DL of the water meter to be inspected to calculate the standard instantaneous flow value. By comparing the standard instantaneous flow value with the instantaneous flow value of the water meter to be inspected, the error characteristics of the water meter to be inspected can be determined.

[0030]

[0031]

[0032]

[0033] Where: V b —— The instantaneous flow rate value of the meter under test (L / h);

[0034] V s —— The standard instantaneous flow rate value (L / h);

[0035] —— The density of water at the water meter (kg / m 3 ), calculated according to the water temperature t;

[0036] k —— The air buoyancy correction coefficient in the weighing method, taking 1.0011, dimensionless.

[0037] In addition, a pressure stabilizing container 40 is installed in the pipeline connecting the water outlet of the water pump and the water inlet of the inlet valve to stabilize the water flow in the pipeline and separate the air bubbles in the pipeline. The main material of the pressure stabilizing container is made of 304 stainless steel; an air inlet valve is set at the top, and a pressure gauge is installed; a liquid level indicating glass tube is set, and a sewage outlet is set at the bottom. A filter screen is also set in the water tank to ensure the stability of the water source at the water inlet of the water pump and reduce the impurities entering the water pump and the pipeline; the water pump is the power source of the entire verification assembly, and its performance directly affects the overall performance of the verification assembly. Considering the on-site power supply situation, a three-phase power supply water pump is used as the circulation pump for the verification assembly, and the system pressure range is continuously adjustable within the range of 0.2 - 0.6 MPa. Shock-absorbing soft connections are installed at both the front and rear ends of the water pump to prevent the water pump operation from causing vibration to the pipeline.

[0038] In addition, to improve the verification efficiency, as Figure 2 The series water meter verification assembly is provided with two measurement station sections in parallel, as Figure 3 shown, there are two or more sets of the series water meter verification assemblies, and each series water meter verification assembly is arranged in parallel. Each series water meter verification assembly is responsible for automatically verifying the meter under test installed by the meter loading and unloading robot. Each series water meter verification assembly is provided with a measurement station section on each side of the meter loading and unloading robot. When one side is performing automatic verification, the other side is operated by the meter loading and unloading robot for meter installation or removal, improving the overall verification efficiency; each series water meter verification assembly is arranged side by side in space, and the number of DN15, DN20, and DN25 series water meter verification assemblies can be set according to the distribution of the size specifications of the water meters to be inspected. For example, if the number of DN20 water meters to be inspected is the largest, and the number of DN15 and DN25 water meters to be inspected is smaller, then 1 DN15 series water meter verification assembly, 2 DN20 series water meter verification assemblies, and 1 DN25 series water meter verification assembly can be set, and so on.

[0039] Specifically, the loading and unloading table robot uses a six-axis robot to serve the upper and lower tables of a series-connected water meter verification component, that is, replacing the table and taking the table. The total time of the upper and lower tables of each group (10 water meters) of a series-connected water meter verification component shall not exceed 100 seconds. The robot is equipped with a double-jaw fixture, which can complete taking the table and replacing the table simultaneously in one action, reducing the action time and improving the water meter verification efficiency.

[0040] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those of ordinary skill in the art to understand the content of the present invention and implement it accordingly. It should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the essence of the content of the present invention should be covered within the protection scope of the present invention.

Claims

1. An assembly line type water meter automatic calibration device, characterized in that: It includes pallet loading and unloading robots, pallet transfer lines, tandem water meter calibration components, and meter loading and unloading robots; The pallet transmission line is provided with an upper line position and a lower line position; the pallet upper and lower line robots are used to grab the pallet containing the to-be-inspected sheets from the to-be-inspected sheets storage area and place it at the upper line position of the pallet transmission line; the pallet upper and lower line robots are also used to grab the pallet containing the inspected sheets from the lower line position of the pallet transmission line and place it at the inspected sheets storage area; The tray transmission line is used to transmit the standard specification tray containing the meter to be tested to the side of the serial water meter verification assembly; The meter loading and unloading robot is used to grab the water meter to be inspected in the tray next to the series water meter calibration component and bring it to the measuring station section of the series water meter calibration component; the meter loading and unloading robot is also used to grab the calibrated water meter at the station of the measuring section of the series water meter calibration component and place it on the tray on the tray transmission line for holding the inspected water meter.

2. The assembly line water meter automatic calibration device according to claim 1, characterized in that: The serial water meter calibration component comprises a water tank, the water outlet of the water tank is connected to the water inlet of a water pump, the water outlet of the water pump is connected to the water inlet of a water inlet valve, the water outlet of the water inlet valve is connected to the water inlet of a measuring station section, the water outlet of the measuring station section is connected to the water inlet of a flow regulating valve, the water outlet of the flow regulating valve is connected to the water inlet of an instantaneous flow indicator, the water outlet of the instantaneous flow indicator is connected to the water inlet of a working volume meter, the working volume meter is placed on an electronic scale, the water outlet of the working volume meter is connected to a drain valve, and the drain valve is connected to the water tank; the measuring station section is used to place a number of meters to be inspected in series and clamp them through a meter clamp, and a collection terminal is arranged above each meter to be inspected; a temperature sensor is also installed in the pipeline of the measuring station section for real-time detection of the water temperature used for calibration.

3. The assembly line water meter automatic calibration device according to claim 2, characterized in that: A pressure stabilizing container is also installed in the pipe connecting the water outlet of the water pump and the water inlet of the water inlet valve.

4. The assembly line water meter automatic calibration device according to claim 2, characterized in that: A filter screen is also arranged in the water tank.

5. The assembly line water meter automatic calibration device according to claim 1, characterized in that: The upper line position and the lower line position are arranged in parallel up and down or side by side left and right.

6. The assembly line water meter automatic calibration device according to claim 1 or 2, characterized in that: The series water meter verification components are provided in more than two groups, and each series water meter verification component is arranged in parallel.

7. The assembly line water meter automatic calibration device according to claim 1, characterized in that: The loading and unloading table robot is a six-axis robot.

Images