Flow meter testing system

Abstract

The utility model discloses a flowmeter test system, including test pipeline, water pump, standard flowmeter, positioning assembly and drive assembly, water pump and standard flowmeter are connected in series in test pipeline, and positioning assembly is fixedly installed with the test pipeline of both sides of the flowmeter to be measured to position the flowmeter to be measured, and drive assembly is used to drive the test pipeline of one side or both sides of the flowmeter to be measured to be close to the flowmeter to be measured to access the flowmeter to be measured into test pipeline, and water pump is used for controlling the flow size in test pipeline, and standard flowmeter is used for generating standard flow data. The utility model discloses a flowmeter test system through design clamping assembly, can realize positioning butt joint when installing quickly, has improved the installation efficiency of the flowmeter to be measured greatly, and the installation pipeline inner diameter concentricity is high, and the pipeline is horizontal, and the sealing performance is good.

Description

Technical Field

[0001] This utility model belongs to the field of instrument calibration technology, specifically relating to a flow meter testing system. Background Technology

[0002] All water flow meters must be calibrated before leaving the factory, using either the standard meter method or the weighing method. Currently, the flow meter industry typically calibrates only one meter at a time, and this process requires a large area. Water flow meters are usually installed into the calibration system using flange or threaded connections, which takes a long time. When calibrating the coefficients of the meters being measured, because the initial address of each meter is always address 1, the system cannot automatically distinguish between meters, requiring the coefficients to be written to only one meter at a time, or the input must be manual. This results in low calibration efficiency and low productivity; generally, a maximum of eight flow meters can be calibrated per day (8 hours).

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a flow meter testing system that can improve the testing efficiency of flow meters.

[0005] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0006] A flow meter testing system includes a test pipeline, a water pump, a standard flow meter, a positioning component, and a drive component. The water pump and the standard flow meter are connected in series in the test pipeline. The positioning component is fixedly installed on the test pipeline located on both sides of the flow meter under test to position the flow meter under test. The drive component is used to drive the test pipeline located on one or both sides of the flow meter under test to move closer to the flow meter under test to connect the flow meter under test to the test pipeline. The water pump is used to control the flow rate in the test pipeline, and the standard flow meter is used to generate standard flow data.

[0007] In one or more embodiments of this utility model, the positioning component includes flanges, two flanges are provided and fixedly installed on the test pipelines located on both sides of the flow meter to be tested, and positioning pins for positioning the flow meter to be tested are provided on the flanges.

[0008] In one or more embodiments of the present invention, the positioning component further includes a fixing block, the fixing block being fixedly installed with the flange, the fixing block being provided with a support portion for supporting the flow meter to be tested; and / or the positioning component further includes a sealing gasket disposed between the flange and the flow meter to be tested.

[0009] In one or more embodiments of this utility model, the flow meter testing system further includes a pressure stabilizing tank connected in series between the water pump and the standard flow meter, the pressure stabilizing tank being used to stabilize the liquid flow rate; and / or the flow meter testing system further includes a switching valve disposed at the inlet of the water pump; and / or the flow meter testing system further includes a regulating valve disposed at the inlet of the flow meter under test; and / or the flow meter testing system further includes a water storage tank connected in series in the test pipeline.

[0010] In one or more embodiments of the present invention, the flow meter testing system further includes a data acquisition module, which is connected to the standard flow meter and the flow meter under test to acquire the flow data of the standard flow meter and the flow meter under test.

[0011] In one or more embodiments of this utility model, the data acquisition module includes a programmable logic controller.

[0012] In one or more embodiments of the present invention, the flow meter testing system further includes a computer, which is connected to the data acquisition module and the flow meter under test to receive the flow data and configure the flow meter under test.

[0013] In one or more embodiments of this utility model, the computer is connected to the flow meter under test via a USB to multi-port RS485 interface.

[0014] In one or more embodiments of this utility model, at least a portion of the test pipeline is covered with a protective sleeve.

[0015] In one or more embodiments of this utility model, multiple flow meters to be tested are provided, and the water pump, the standard flow meter and the flow meter to be tested are connected in series in the test pipeline.

[0016] Compared with existing technologies, the flow meter testing system of this invention, through the design of positioning components, enables rapid positioning and docking during installation, greatly improving the installation efficiency of the flow meter under test. It also ensures high concentricity of the inner diameter of the installation pipe, horizontal pipe level, and good sealing. Furthermore, it allows multiple flow meters to be connected in series in the test pipeline, transforming traditional serial calibration into parallel processing, making it suitable for simultaneous measurement and calibration of multiple flow meters. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the flow meter testing system in one embodiment of the present invention.

[0019] Figure 2 This is a partial structural diagram of the flow meter testing system in one embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the flange structure in one embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the sealing gasket in one embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the fixing block in one embodiment of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0024] The terms "coupled," "connected," or "linked" in this specification include both direct and indirect connections. Indirect connections are those made through an intermediate medium, such as those made through an electrically conductive medium, which may have parasitic inductance or capacitance. Indirect connections may also include connections made through other active or passive devices to achieve the same or similar functional purpose, such as connections through switches, follower circuits, or other circuits or components. Furthermore, in this specification, terms such as "first" and "second" are primarily used to distinguish one technical feature from another, and do not necessarily require or imply any actual relationship, quantity, or order between these technical features.

[0025] In the detailed description of this specification, reference is made to the accompanying drawings, which form a part thereof, wherein like reference numerals always denote like parts, and wherein exemplary embodiments are shown by way of example that may be implemented. It should be understood that other embodiments may be utilized, and structural or logical changes may be made, without departing from the scope of this application. Therefore, the following detailed description should not be considered limiting.

[0026] The various operations in the specification may be described sequentially as multiple discrete actions or operations in a manner most conducive to understanding the claimed subject matter. However, the order of description should not be construed as implying that these operations must be sequentially related. Specifically, these operations may not be performed in the order presented. The described operations may be performed in a different order than in the described embodiments. Various additional operations may be performed in additional embodiments and / or the described operations may be omitted.

[0027] For the purposes of this application, the phrase "A and / or B" means (A), (B), or (A and B). For the purposes of this application, the phrase "A, B and / or C" means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B and C).

[0028] Various components and devices may be mentioned or shown in the singular form herein, but only for the convenience of discussion, and any element mentioned in the singular form may include multiple such elements as taught herein.

[0029] The description uses the phrases "in one embodiment," "in other embodiments," or "in some embodiments," each of which can refer to one or more of the same or different embodiments. Furthermore, the terms "comprising," "including," "having," etc., used in relation to embodiments of this application are synonymous.

[0030] like Figure 1 As shown, the flow meter testing system in one embodiment of this utility model includes a test pipeline, a water storage tank 10, a switching valve 20, a water pump 30, a pressure stabilizing tank 40, a standard flow meter 50, a positioning component 60, a drive component, a regulating valve, a data acquisition module, and a computer.

[0031] The water storage tank 10, switch valve 20, water pump 30, pressure stabilizing tank 40, regulating valve, and standard flow meter 50 are all connected in series in the test pipeline. The positioning assembly 60 is fixedly installed on the test pipelines located on both sides of the flow meter under test to position the flow meter. The drive assembly is used to drive the test pipelines located on both sides of the flow meter under test closer to the flow meter to connect it to the test pipeline. The water pump 30 is used to control the flow rate in the test pipeline, and the standard flow meter 50 is used to generate standard flow data.

[0032] A pressure stabilizing tank 40 is connected in series between the water pump 30 and the standard flow meter 50. The pressure stabilizing tank 40 is used to stabilize the liquid flow rate. A switching valve 20 is located at the inlet of the water pump 30 to control the water flow into the water pump 30. A regulating valve is located at the inlet of the flow meter to be measured to control the water flow into the flow meter to be measured.

[0033] The data acquisition module is connected to the standard flow meter 50 and the flow meter under test to acquire flow data from both. A computer is connected to the data acquisition module and the flow meter under test to receive the flow data and configure the flow meter.

[0034] In one embodiment, multiple flow meters to be tested are provided. The water storage tank 10, the on / off valve 20, the water pump 30, the pressure stabilizing tank 40, the standard flow meter 50, and the multiple flow meters to be tested can be connected in series in the test pipeline to form a closed loop of water flow. Multiple positioning components 60 can be provided corresponding to the flow meters to be tested. Multiple regulating valves can also be provided, with each regulating valve located at the inlet of the corresponding flow meter to be tested.

[0035] In other embodiments, one or more of the water storage tank 10, the switching valve 20, the pressure stabilizing tank 40, and the regulating valve may not be provided, or the above-mentioned devices may be connected in series in other order.

[0036] Multiple positioning components 60 can have the same structure; the following explanation uses one of them as an example:

[0037] Combination Figures 2-5 As shown, the positioning assembly 60 includes a flange, a retaining block, and a sealing gasket.

[0038] The system includes two flanges, two fixing blocks, and two gaskets: flange 61 and flange 61', two fixing blocks 62 and 62', and two gaskets 63 and 63'. Flanges 61 and 61' are fixedly installed on the test pipelines located on either side of the flowmeter under test. Flanges 61 and 61' are respectively equipped with locating pins 64 and 64' for positioning the flowmeter. Fixing block 62 is fixedly installed on flange 61, and fixing block 62' is fixedly installed on flange 61'. Fixing block 62 has a support portion 621 for supporting the flowmeter under test, and fixing block 62' has a support portion 621' for supporting the flowmeter under test. Gaskets 63 and 63' are positioned between flange 61 and the flowmeter under test to provide a seal.

[0039] Preferably, at least a portion of the test tubing may be fitted with a protective sleeve 70. For example, the test tubing located on both sides of the flow meter under test is fitted with a protective sleeve 70. Both the protective sleeve 70 and the test tubing may be made of 304 stainless steel.

[0040] Combination Figures 2-5 As shown, exemplarily, a mounting hole 611 is provided in the center of the flange 61, through which the test pipeline and the sheath 70 are welded and fixed to the flange 61. Positioning holes 612 are provided around the mounting hole, and positioning pins 64 are disposed in the positioning holes 612. A through hole 613 is also provided at the edge of the flange 61, in which screws 65 for fixing the sealing gasket 63 and the fixing block 62 are disposed.

[0041] Corresponding to flange 61, gasket 63 is provided with mounting hole 631, positioning hole 632 and through hole 633.

[0042] The fixing block 62 includes two side plates and a base plate. The base plate forms a support 621 to support and hold the flow meter under test, while the side plates are used for mounting and limiting the flow meter under test. During installation, screws 65 are screwed into the fixing block 62 through the through hole 633 on the sealing gasket 63 to fix it to the flange 61.

[0043] Flange 61', gasket 63' and fixing block 62' can adopt a symmetrical structural design with flange 61, gasket 63 and fixing block 62, which will not be elaborated here.

[0044] Preferably, the sealing gaskets 63 and 63' can be made of silicone, and the fixing blocks 62 and 62' can be made of PP plastic. While achieving an effective sealing effect, the parts that come into direct contact with the flow meter under test are made of flexible materials, which can avoid damage.

[0045] In one embodiment, the driving component may include a cylinder, and multiple cylinders may be provided for the flow meter to be measured, or a single linkage cylinder may be used.

[0046] When installing the flow meter to be tested, first place the flow meter in the fixing block 62 and fixing block 62', then insert the positioning pin into the positioning hole on the flow meter to ensure that the flow meter is concentric and horizontal with the test pipeline. Then, drive the flange 61 and flange 61' to approach and tighten the flow meter from both sides through the drive assembly, so that the inlet and outlet of the flow meter can be connected to the test pipeline on both sides respectively. At the same time, the sealing gasket 63 and sealing gasket 63' play a sealing role between the flow meter and the test pipeline.

[0047] Specifically, the cylinder can directly drive flange 61 and flange 61' to move closer to each other, or directly drive the test pipelines on both sides and drive flange 61 and flange 61' to move closer to each other.

[0048] In other embodiments, the fixing block and sealing gasket may not be provided, or only one side of the fixing block and sealing gasket may be provided.

[0049] In other embodiments, the drive component may also drive only the test line on one side of the flow meter under test (DUT) toward the DUT to connect the DUT to the test line. When the test line on one side of the DUT is fixed, moving only the test line on the other side can also tighten and fix the DUT, achieving docking.

[0050] Preferably, the data acquisition module may include a programmable logic controller (PLC). The computer is connected to each flow meter under test via a USB-to-multi-port RS485 adapter. The computer can also be connected to the switching valve 20 to control its opening and closing, to the regulating valve to control its opening and closing degree, and to the water pump 30 to control its frequency conversion.

[0051] In actual operation, the QR code of the flow meter under test can be scanned first, and the computer system will automatically enter the instrument ID and assign a communication address. Then, the flow meter under test is placed on the corresponding mounting block, and the positioning pin is used for quick positioning. Then, the cylinder is triggered to automatically tighten the flow meter under test, completing the docking installation and eliminating the time-consuming manual flange docking.

[0052] Then, the water pump 30 is started, and the switch valve 20 and regulating valve are opened to draw water from the water storage tank 10 into the pressure stabilizing tank 40. The pressure stabilizing tank 40 is made of stainless steel and is equipped with an exhaust device, which uses the principle of air pressure to ensure a stable water flow rate when the water flows out of the pressure stabilizing tank 40. By controlling the water pump 30 and the valve opening, various flow rates are ensured to flow through the standard flow meter 50 and the flow meter under test. The data acquisition module can simultaneously read the flow data of the standard flow meter 50 and the flow meter under test. After receiving the data, the computer can compare the flow data of the flow meter under test with the standard flow data of the standard flow meter 50, calculate the calibration coefficient of each flow meter under test, and write it to all flow meters under test in parallel via multiple RS485 serial ports to complete the test calibration. The computer system can also store the calibration time, coefficient value, flow values ​​of the flow meter under test and the standard flow meter 50, and associated instrument ID into the database to generate an electronic report. Users can query the calibration results and process data by scanning the flow meter's QR code signal.

[0053] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flow meter testing system, characterized in that, The device includes a test pipeline, a water pump, a standard flow meter, a positioning component, and a drive component. The water pump and the standard flow meter are connected in series in the test pipeline. The positioning component is fixedly installed on the test pipeline located on both sides of the flow meter under test to position the flow meter under test. The drive component is used to drive the test pipeline located on one or both sides of the flow meter under test to move closer to the flow meter under test to connect the flow meter under test to the test pipeline. The water pump is used to control the flow rate in the test pipeline, and the standard flow meter is used to generate standard flow data.

2. The flow meter testing system according to claim 1, characterized in that, The positioning component includes flanges, two of which are fixedly installed to the test pipelines located on both sides of the flow meter under test, and the flanges are provided with positioning pins for positioning the flow meter under test.

3. The flow meter testing system according to claim 2, characterized in that, The positioning assembly further includes a fixing block, which is fixedly installed with the flange, and the fixing block is provided with a support portion for supporting the flow meter under test; and / or The positioning component also includes a sealing gasket disposed between the flange and the flow meter to be measured.

4. The flow meter testing system according to claim 1, characterized in that, The flow meter testing system also includes a pressure stabilizing tank, which is connected in series between the water pump and the standard flow meter. The pressure stabilizing tank is used to stabilize the liquid flow rate; and / or The flow meter testing system also includes a switching valve, which is located at the inlet of the water pump; and / or The flow meter testing system further includes a regulating valve, which is located at the inlet of the flow meter under test; and / or The flow meter testing system also includes a water storage tank connected in series in the test pipeline.

5. The flow meter testing system according to claim 1, characterized in that, The flow meter testing system also includes a data acquisition module, which is connected to the standard flow meter and the flow meter under test to acquire the flow data of the standard flow meter and the flow meter under test.

6. The flow meter testing system according to claim 5, characterized in that, The data acquisition module includes a programmable logic controller.

7. The flow meter testing system according to claim 5, characterized in that, The flow meter testing system also includes a computer, which is connected to the data acquisition module and the flow meter under test to receive the flow data and configure the flow meter under test.

8. The flow meter testing system according to claim 7, characterized in that, The computer is connected to the flow meter under test via a USB-to-multi-port RS485 interface.

9. The flow meter testing system according to claim 1, characterized in that, At least a portion of the test tubing is covered with a protective sleeve.

10. The flow meter testing system according to claim 1, characterized in that, Multiple flow meters are provided, and the water pump, the standard flow meter, and the flow meter to be tested are connected in series in the test pipeline.

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