Automatic calibration, inspection and test system for flow meter

Abstract

The invention relates to the technical field of testing systems, and particularly discloses a flowmeter automatic calibration inspection testing system which comprises a medium supply assembly, a front pressure testing pipeline, a rear pressure testing pipeline, a proportional valve, a connection device and a control assembly. The medium supply assembly is used for conveying a test medium; the head end of the front pressure testing pipeline is configured to be connected with the medium supply assembly, and the front pressure testing pipeline is used for obtaining the front pressure of the flowmeter to be tested; the post-pressure testing pipeline is used for acquiring post-pressure of the flowmeter to be tested; the proportional valve is configured to be connected with the tail end of the post-pressure test pipeline, and the proportional valve is used for controlling the flow of a test medium; the connection device is used for sequentially connecting the front pressure testing pipeline, the flowmeter to be tested and the rear pressure testing pipeline; the medium supply assembly, the front pressure testing pipeline, the rear pressure testing pipeline, the proportional valve and the connection device are all electrically connected with the control assembly. The automatic calibration and inspection test system for the flowmeter is high in inspection efficiency and small in precision error.

Description

Technical Field

[0001] This invention relates to the field of testing system technology, and specifically to an automatic calibration and testing system for flow meters. Background Technology

[0002] After the flow meters are manufactured and assembled, there will be differences in accuracy. Therefore, each flow meter needs to be calibrated to improve the accuracy of flow detection.

[0003] Currently, during testing and calibration, it is necessary to manually calibrate each test point of the traffic flow. However, manual operation is subject to certain human error and subjective judgment error, so human error occurs from time to time.

[0004] To address this, a testing system was developed that can automatically calibrate the flow meter under test. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic calibration and testing system for flow meters, which can automatically calibrate the flow meter under test, automatically check the accuracy error, and has high testing efficiency and small error.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An automatic calibration and testing system for flow meters includes: at least one medium supply component, at least one front pressure test line, at least one rear pressure test line, at least one proportional valve, at least one connection device, and a control component.

[0007] The at least one media supply component is used to deliver the test media.

[0008] The first end of the at least one front pressure test line is configured to be connected to the at least one medium supply component, and the at least one front pressure test line is used to obtain the front pressure of the flow meter under test.

[0009] The at least one back pressure test line is used to obtain the back pressure of the flow meter under test.

[0010] The at least one proportional valve is configured to be connected to the end of the at least one post-pressure test line, and the at least one proportional valve is used to control the flow rate of the test medium.

[0011] The at least one connection device is used to sequentially connect the end of the at least one front pressure test pipeline, the flow meter to be tested, and the beginning of the at least one rear pressure test pipeline.

[0012] The control component is used to calibrate the flow meter under test.

[0013] The control component is connected to a data cable for connecting to the flow meter under test.

[0014] The at least one medium supply component, at least one pre-pressure test line, at least one post-pressure test line, at least one proportional valve, and at least one connection device are all electrically connected to the control component.

[0015] The control component is also used to control the at least one media supply component, at least one front pressure test line, at least one rear pressure test line, and at least one proportional valve.

[0016] In the automatic calibration and testing system for flow meters provided in at least one embodiment of this disclosure, the pre-pressure test pipeline includes: a switching valve, a standard flow meter, a first pressure gauge, and a plurality of first rigid pipes.

[0017] The switching valve, standard flow meter, and first pressure gauge are connected sequentially through multiple first rigid pipes along the direction of medium flow.

[0018] In the automatic calibration and testing system for flow meters provided in at least one embodiment of this disclosure, the back pressure test pipeline includes: a second pressure gauge, a second rigid pipe, and a third rigid pipe.

[0019] The second rigid tube and the third rigid tube are respectively connected to the two ends of the second pressure gauge.

[0020] The inlet of the proportional valve is connected to a flexible tube, which is connected to the third rigid tube.

[0021] In the automatic calibration and testing system for flow meters provided in at least one embodiment of this disclosure, the connecting device includes: a support base, a connecting block, and at least one linear drive module.

[0022] The support base is used to provide support for the flow meter under test.

[0023] The connecting block is configured to be fixedly connected to the second rigid tube.

[0024] The at least one linear drive module is used to drive the second rigid tube to move linearly.

[0025] The first rigid tube is configured to be fixedly connected to the support base, and the second rigid tube coincides with the central axis of the first rigid tube.

[0026] The drive end of at least one linear drive module is fixedly connected to the connecting block.

[0027] The support base is provided with a mounting groove for mounting the flow meter to be tested and aligning the inlet of the flow meter to be tested with the outlet of the first rigid tube.

[0028] The automatic calibration and testing system for flow meters provided in at least one embodiment of this disclosure further includes: at least one container.

[0029] The at least one container is used to store the test medium.

[0030] The at least one container has at least one first water pipe and at least one second water pipe.

[0031] The at least one medium supply component is connected to the at least one first water pipe, and the at least one proportional valve is connected to the at least one second water pipe.

[0032] In the automatic calibration and testing system for flow meters provided in at least one embodiment of this disclosure, a thermometer is installed on the second water pipe.

[0033] The thermometer is configured to be electrically connected to the control component.

[0034] In the automatic calibration and testing system for flow meters provided in at least one embodiment of this disclosure, both the first rigid tube and the second rigid tube are provided with sealing rubber rings.

[0035] The sealing rubber ring faces the flow meter to be measured.

[0036] The automatic calibration and testing system for flow meters provided in at least one embodiment of this disclosure further includes: a barcode scanner.

[0037] The barcode scanner is configured to be electrically connected to the control component.

[0038] The barcode scanner is used to exchange data with the flow meter under test.

[0039] The automatic calibration and testing system for flow meters provided in at least one embodiment of this disclosure further includes a touch screen.

[0040] The touchscreen is configured to be electrically connected to the control component.

[0041] The beneficial effects of this invention are: it can automatically calibrate the tested instrument, automatically check the accuracy error after calibration, and only allow shipment when the error meets the requirements. The testing efficiency is higher than manual testing, greatly shortening testing time and significantly improving product shipment efficiency and product consistency accuracy. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1This is a component connection diagram of an automatic calibration and testing system for flow meters in Example 1.

[0044] Figure 2 This is a component connection diagram of an automatic calibration and testing system for flow meters in Example 4.

[0045] Figure 3 This is a schematic diagram showing the sequential connection of the pre-pressure test pipeline, connecting device, post-pressure test pipeline, and proportional valve.

[0046] Figure 4 This is a schematic diagram showing the distribution of the sealing rubber rings.

[0047] Figure 5 This is a component connection diagram of an automatic calibration and testing system for flow meters in Example 2.

[0048] Figure 6 This is a component connection diagram of an automatic calibration and testing system for flow meters in Example 3.

[0049] In the picture: 10. Media supply assembly; 20. Pre-pressure test pipeline; 21. Switch valve; 22. Standard flow meter; 23. First pressure gauge; 24. First rigid pipe; 25. Sealing rubber ring; 30. Post-pressure test pipeline; 31. Second pressure gauge; 32. Second rigid tube; 33. Third rigid tube; 40. Proportional valve; 41. Flexible tubing; 50. Connecting device; 51. Support base; 52. Connecting block; 53. Linear drive module; 60. Control components; 70. Container; 71. First water pipe; 72. Second water pipe; 80. Barcode scanner; 90. Touchscreen. Detailed Implementation

[0050] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments, not all embodiments.

[0051] Example 1 like Figure 1 , 3 As shown in Figure 4, this embodiment provides an automatic calibration and testing system for flow meters, including: a medium supply component 10, a front pressure test pipeline 20, a rear pressure test pipeline 30, a proportional valve 40, a connection device 50, a control component 60, and a container 70.

[0052] In this embodiment, the media supply component 10 is used to deliver the test media.

[0053] For example, the media supply assembly 10 includes a pump body (not shown) and a frequency converter (not shown), which are electrically connected. The frequency converter can adjust the pump speed according to actual needs, avoiding energy waste caused by traditional adjustment methods and improving energy utilization efficiency; it can achieve precise control of the pump body, and adjust parameters such as pump flow and pressure as needed, making the pump start-up and shutdown process smoother, reducing pressure shock damage to pipelines and equipment, and adapting to different working requirements.

[0054] In this embodiment, the first end of the pre-pressure test line 20 is configured to be connected to the medium supply assembly 10, and the pre-pressure test line 20 is used to obtain the pre-pressure of the flow meter under test. The post-pressure test line 30 is used to obtain the post-pressure of the flow meter under test.

[0055] In this embodiment, the proportional valve 40 is configured to be connected to the end of the post-pressure test pipeline 30, and the proportional valve 40 is used to control the flow rate and pressure of the test medium.

[0056] In this embodiment, the connection device 50 is used to sequentially connect the end of the front pressure test pipeline 20, the flow meter to be tested, and the beginning of the rear pressure test pipeline 30.

[0057] In this embodiment, the control component 60 is used to calibrate the flow meter under test. The control component 60 is connected to a data cable, which is used to connect to the flow meter under test.

[0058] Specifically, the media supply assembly 10, the pre-pressure test line 20, the post-pressure test line 30, the proportional valve 40, and the connection device 50 are all electrically connected to the control assembly 60. The control assembly 60 is also used to control the media supply assembly 10, the pre-pressure test line 20, the post-pressure test line 30, and the proportional valve 40.

[0059] During testing, a test flow rate value is set through the control component 60, and the proportional valve 40 will automatically take the flow rate in the regulating pipeline. The pressure before and after the flow meter under test is used as the standard reference value, and the flow rate is dynamically adjusted in real time. After the adjusted flow rate stabilizes, the flow meter under test is calibrated. Each flow meter under test needs to be calibrated at 5 flow points. After the 5 points are calibrated, the inspection test is carried out to check whether the accuracy is qualified.

[0060] In this embodiment, the pre-pressure test line 20 includes a switching valve 21, a standard flow meter 22, a first pressure gauge 23, and a plurality of first rigid pipes 24.

[0061] Specifically, the switching valve 21, the standard flow meter 22, and the first pressure gauge 23 are connected sequentially through multiple first rigid pipes 24 along the direction of medium flow.

[0062] In this embodiment, the back pressure test line 30 includes a second pressure gauge 31, a second rigid tube 32, and a third rigid tube 33.

[0063] Specifically, the second rigid tube 32 and the third rigid tube 33 are respectively connected to both ends of the second pressure gauge 31. The inlet of the proportional valve 40 is connected to a flexible tube 41, which is connected to the third rigid tube 33.

[0064] The proportional valve 40 is connected to the third rigid pipe 33 by means of a flexible pipe 41, which can meet the motion requirements of the third rigid pipe 33.

[0065] In this embodiment, the connection device 50 includes a support base 51, a connecting block 52, and a linear drive module 53.

[0066] Specifically, the support base 51 is used to provide support for the flow meter under test. The connecting block 52 is configured to be fixedly connected to the second rigid tube 32.

[0067] Specifically, the first rigid tube 24 is configured to be fixedly connected to the support base 51, and the second rigid tube 32 coincides with the central axis of the first rigid tube 24. The driving end of the linear drive module 53 is fixedly connected to the connecting block 52, so that the second rigid tube 32 follows the driving end of the linear drive module 53 in linear motion.

[0068] For example, the linear drive module 53 employs a servo cylinder.

[0069] For example, both the support base 51 and the connecting block 52 are provided with through holes for pipes to pass through. The first rigid pipe 24 passes through the through hole on the support base 51, and the second rigid pipe 32 passes through the through hole on the connecting block 52. Such a structure is beneficial for the first rigid pipe 24 and the second rigid pipe 32 to be connected to the flow meter to be measured.

[0070] Specifically, the support base 51 is provided with a mounting groove (not shown), which is used to mount the flow meter to be measured. After the flow meter to be measured is placed in the mounting groove, its inlet is aligned with the outlet of the first rigid tube 24.

[0071] In this embodiment, container 70 is used to store test media. Container 70 has a first water pipe 71 and a second water pipe 72.

[0072] The medium supply assembly 10 is connected to the first water pipe 71, and the proportional valve 40 is connected to the second water pipe 72.

[0073] In this embodiment, a thermometer (not shown) is installed on the second water pipe 72, and the thermometer is configured to be electrically connected to the control component 60.

[0074] In this embodiment, both the first rigid tube 24 and the second rigid tube 32 are provided with sealing rubber rings 25. The sealing rubber rings 25 face the flow meter to be measured; after connection, the sealing rubber rings 25 can abut against the flow meter to be measured.

[0075] By incorporating a sealing rubber ring 25, the sealing effect after connection is improved during use, reducing leakage.

[0076] Example 2 like Figure 5 As shown, this embodiment provides an automatic calibration and testing system for flow meters, which differs from Embodiment 1 in that it also includes a barcode scanner 80.

[0077] The barcode scanner 80 is configured to be electrically connected to the control component 60.

[0078] The barcode scanner 80 is used to exchange data with the flow meter under test.

[0079] Example 3 like Figure 6 As shown, this embodiment provides an automatic calibration and testing system for flow meters, which differs from Embodiment 1 in that it also includes a touch screen 90. The touch screen 90 is configured to be electrically connected to the control component 60.

[0080] Example 4 like Figure 2 As shown, this embodiment provides an automatic calibration and testing system for flow meters. The difference between this system and Embodiment 1 is that the medium supply component 10, the front pressure test pipeline 20, the rear pressure test pipeline 30, the proportional valve 40, and the connection device 50 are all provided in two sets. The first water pipe and the second water pipe are both provided in two sets. The system can calibrate two flow meters to be tested at the same time.

[0081] Although embodiments of this application have been shown and described above, the scope of protection of this invention is not limited thereto. Any variations or substitutions that can be conceived without inventive effort should be covered within the scope of protection of this invention. Unless expressly stated otherwise, no element, action or instruction used herein should be construed as critical or necessary.

Claims

1. An automatic calibration and testing system for flow meters, characterized in that, include: At least one media supply component for delivering the test media; At least one front pressure test line, the first end of which is configured to be connected to the at least one medium supply component, the at least one front pressure test line being used to obtain the front pressure of the flow meter under test; At least one back pressure test line is used to obtain the back pressure of the flow meter under test; At least one proportional valve is configured to be connected to the end of the at least one post-pressure test line, the at least one proportional valve being used to control the flow rate of the test medium; At least one connection device is provided for sequentially connecting the end of the at least one front pressure test pipeline, the flow meter to be tested, and the beginning of at least one rear pressure test pipeline. as well as Control components are used to calibrate the flow meter under test; The control component is connected to a data cable for connecting to the flow meter under test; The at least one medium supply component, at least one pre-pressure test line, at least one post-pressure test line, at least one proportional valve, and at least one connection device are all electrically connected to the control component. The control component is also used to control the at least one media supply component, at least one front pressure test line, at least one rear pressure test line, and at least one proportional valve.

2. The automatic calibration and testing system for flow meters according to claim 1, characterized in that, The pre-pressure test pipeline includes: Switch valve; Standard flow meter; First pressure gauge; as well as Multiple first rigid tubes; The switching valve, standard flow meter, and first pressure gauge are connected sequentially through multiple first rigid pipes along the direction of medium flow.

3. The automatic calibration and testing system for flow meters according to claim 2, characterized in that, The post-pressure test pipeline includes: Second pressure gauge; Second rigid tube; as well as Third rigid tube; The second rigid tube and the third rigid tube are respectively connected to the two ends of the second pressure gauge; The inlet of the proportional valve is connected to a flexible tube, which is connected to the third rigid tube.

4. The automatic calibration and testing system for a flow meter according to claim 3, characterized in that, The connection device includes: Support base, used to provide support for the flow meter under test; The connecting block is configured to be fixedly connected to the second rigid tube; and At least one linear drive module is used to drive the second rigid tube to linear motion; The first rigid tube is configured to be fixedly connected to the support base, and the second rigid tube coincides with the central axis of the first rigid tube. The drive end of the at least one linear drive module is fixedly connected to the connecting block; The support base is provided with a mounting groove for mounting the flow meter to be tested and aligning the inlet of the flow meter to be tested with the outlet of the first rigid tube.

5. The automatic calibration and testing system for flow meters according to claim 1, characterized in that, Also includes: At least one container for storing the test medium; The at least one container has at least one first water pipe and at least one second water pipe; The at least one medium supply component is connected to the at least one first water pipe, and the at least one proportional valve is connected to the at least one second water pipe.

6. The automatic calibration and testing system for a flow meter according to claim 5, characterized in that, A thermometer is installed on the second water pipe; The thermometer is configured to be electrically connected to the control component.

7. The automatic calibration and testing system for a flow meter according to claim 4, characterized in that, Both the first rigid tube and the second rigid tube are provided with sealing rubber rings; The sealing rubber ring faces the flow meter to be measured.

8. The automatic calibration and testing system for a flow meter according to claim 1, characterized in that, Also includes: A barcode scanner configured to be electrically connected to the control component; The barcode scanner is used to exchange data with the flow meter under test.

9. The automatic calibration and testing system for a flow meter according to claim 8, characterized in that, Also includes: The touch screen is configured to be electrically connected to the control component.

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