Ultrasonic water meter disturbance flow test pipeline tooling and test method

Abstract

The present invention provides an ultrasonic water meter turbulence test pipeline tooling, comprising a fluid pipeline, in which an internal turbulence structure and a bubble generating structure are arranged, the internal turbulence structure comprising a spiral vortex generating sheet and a plurality of turbulence sheets, the spiral vortex generating sheet being located in the starting section of the flow field of the pipeline, the spiral vortex generating sheet being provided with a plurality of ridge-like structures, the turbulence sheet being located in the end section of the fluid pipeline, the bubble generating structure comprising a plurality of central gas injection holes and a plurality of circumferential gas injection holes, the central gas injection hole being arranged at the starting point of the spiral vortex generating sheet, the circumferential gas injection hole being arranged on the fluid pipeline at the starting point of the spiral vortex generating sheet, the plurality of turbulence sheets being evenly distributed on the inner wall of the fluid pipeline, the central gas injection hole and the circumferential gas injection holes being respectively connected to a gas source, the internal turbulence structure and the bubble generating structure being adopted to simulate a water flow condition in which bubbles and vortices are simultaneously contained in a water flow field.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic water meter disturbance flow test pipe section tooling, in particular to an ultrasonic water meter disturbance flow test pipe section tooling containing a bubble and vortex generating structure. Background Art

[0002] As a critical measuring instrument for water flow, water meters' accuracy, measurement range, reliability, lifespan, functionality, and manufacturing cost are all crucial to water metering and billing, making them valuable in controlling, conserving, and managing water use. During R&D and production inspections, different types of water meters require specialized testing equipment to simulate user usage, special circumstances, and extreme conditions that could potentially impact meter accuracy. This ensures that the meter maintains the required accuracy under various environmental conditions and ensures long-term performance.

[0003] Among the many factors that affect water meter flow accuracy, the most significant and sensitive is water vortex disturbance. The most sensitive influence on ultrasonic water meter accuracy is the presence of bubbles in the water. Therefore, a test pipe fixture is required to simulate the distribution of bubbles in the flow field, as well as the extreme case of both bubbles and vortices. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an ultrasonic water meter disturbance flow test pipeline tooling, which adopts an internal disturbance flow structure and a bubble generating structure to simulate the water flow situation containing both bubbles and vortices in the water flow field, and provides conditions for testing the flow accuracy of the ultrasonic water meter under the condition of uneven distribution of bubble density and size in the vortex flow field.

[0005] The specific technical solution is as follows: An ultrasonic water meter turbulence test pipeline tooling includes a fluid pipeline, wherein an internal turbulence structure and a bubble generating structure are arranged in the fluid pipeline, the internal turbulence structure includes a spiral vortex generating sheet and multiple turbulence sheets, the spiral vortex generating sheet is located in the starting section of the flow field of the pipeline, the spiral vortex generating sheet is provided with multiple ridge-like structures, the turbulence sheet is located at the end of the fluid pipeline, the bubble generating structure includes multiple central gas injection holes and multiple circumferential gas injection holes, the central gas injection hole is arranged at the starting point of the spiral vortex generating sheet, the central gas injection holes are evenly arranged along the diameter direction of the fluid pipeline, the circumferential gas injection holes are arranged on the fluid pipeline at the starting point of the spiral vortex generating sheet, the circumferential gas injection holes are evenly arranged along the inner wall of the fluid pipeline, multiple turbulence sheets are evenly distributed on the inner wall of the fluid pipeline, and the central gas injection hole and the circumferential gas injection holes are respectively connected to the gas source.

[0006] The above technical solution adopts an internal disturbance structure and a bubble generating structure to simulate a water flow field containing both bubbles and vortices, and provides conditions for testing the flow accuracy of an ultrasonic water meter under conditions of uneven distribution of bubble density and size in a vortex flow field.

[0007] Preferably, the spiral vortex generating sheet is a thin sheet structure, the thickness of the spiral vortex generating sheet is 1 / 28-1 / 32 of the diameter of the fluid pipeline, the ratio of the pitch of the spiral vortex generating sheet to the diameter of the fluid pipeline is 0.8-1.2, and the optimal spiral angle of the spiral vortex generating sheet is 40°-50°.

[0008] The above technical solution enables the ultrasonic water meter disturbance flow test pipeline tooling to better simulate the vortex state of water flow.

[0009] Preferably, the thickness of the spiral vortex generating sheet is 1 / 30 of the diameter of the fluid pipeline, the ratio of the pitch of the spiral vortex generating sheet to the diameter of the fluid pipeline is 1, and the optimal spiral angle of the spiral vortex generating sheet is 45°.

[0010] Through the above technical solution, the ultrasonic water meter disturbance flow test pipeline tooling can simulate the vortex state of water flow to achieve the best effect.

[0011] Preferably, the spiral vortex generating sheet is provided with a plurality of ribbed structures, the cross-section of the ribbed structure is rectangular, the rib height of the ribbed structure is 1 / 3-1 / 2 of the total thickness of the sheet structure, and the plurality of ribbed structures are evenly arranged along the water flow direction at a spacing of 2 times the rib height, and the central gas injection hole is evenly distributed on the starting ribbed structure.

[0012] Through the above technical solution, the spiral vortex generating sheet can not only keep the spiral structure from being deformed when impacted by water flow, but also enable the ridged structure to disturb the bubbles close to the spiral sheet structure, so that the bubbles are evenly distributed on the surface of the spiral sheet to a certain thickness.

[0013] Preferably, the cross-section of the corrugated structure is rectangular, and the height of the corrugated structure is 1 / 2 of the total thickness of the sheet-like structure.

[0014] Through the above technical solution, the spiral vortex generating piece has a better disturbing effect on bubbles.

[0015] Preferably, the diameter of the central gas injection hole is 2-4 mm, the spacing between the central gas injection holes is 2-4 times the diameter, the diameter of the circumferential gas injection holes is 2-4 mm, and the spacing between the circumferential gas injection holes is 2-4 times the diameter.

[0016] Through the above technical solution, the bubbles generated by the central gas injection hole and the circumferential gas injection holes are made more uniform.

[0017] Preferably, independent regulating valves capable of controlling the pressure and flow of the injected gas are respectively provided at both ends of the central gas injection hole, and the circumferential gas injection holes are respectively distributed on the circumference of the two semicircular tube walls and are respectively provided with independent regulating valves capable of controlling the pressure and flow of the injected gas.

[0018] The above technical solution allows air to be injected from one end of the central gas injection hole or from both ends, and the flow rate and pressure of the injected air can be adjusted. It also allows air to be injected from one or both semicircular walls of the circumferential gas injection hole, and the flow rate and pressure of the injected air can be adjusted.

[0019] Preferably, the gas pressure in the central gas injection hole is 1.2-1.6 times the water pressure in the fluid pipeline, and the gas pressure in the circumferential gas injection holes is 1.2-1.6 times the water pressure in the fluid pipeline.

[0020] Through the above technical solution, various bubble states in the fluid pipeline can be better simulated.

[0021] Preferably, flange structures are respectively provided at both ends of the fluid pipeline.

[0022] Through the above technical solution, the fluid pipeline can be connected to the water meter through the flange to simulate various water flow conditions.

[0023] Preferably, an observation window is provided at the end section of the fluid pipeline.

[0024] Through the above technical solution, the bubbles and flow field state in the fluid pipeline can be observed through the observation window.

[0025] The beneficial effects of the present invention are:

[0026] 1. Utilizing internal flow disturbance and bubble generation structures, this device simulates flow conditions containing both bubbles and vortices within a water flow field. This allows for testing the flow accuracy of ultrasonic water meters in vortex flow fields with uneven bubble density and size distribution. Because ultrasonic water meters are sensitive to vortices and bubbles within the flow field, this flow disturbance test pipe section fixture simulates the flow accuracy characteristics of ultrasonic water meters under varying vortex and bubble distribution conditions within the pipe section under user operating conditions.

[0027] 2. A ribbed structure is provided on the spiral vortex generating sheet, so that the spiral vortex generating sheet can not only keep the spiral structure from being deformed when impacted by water flow, but also enable the ribbed structure to disturb the bubbles close to the spiral sheet structure, so that the bubbles are evenly distributed on the surface of the spiral sheet with a certain thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] in:

[0030] Figure 1 This is a schematic diagram of the structure of Example 1 Figure 1 ;

[0031] Figure 2 Based Figure 1 A magnified schematic diagram of part A;

[0032] Figure 3 This is a schematic diagram of the structure of Example 1 Figure 2 ;

[0033] Figure 4 This is a top view of Example 1;

[0034] Figure 5 for Figure 4 BB cross-sectional view;

[0035] Figure 6 for Figure 4 AA cross-sectional view;

[0036] 1. Fluid pipeline, 11. Spiral vortex generating plate, 111. Corrugated structure, 12. Spoiler, 13. Central gas injection hole, 14. Circumferential gas injection hole, 2. Flange structure, 3. Observation window, 4. Control valve. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from the description. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0039] Example 1

[0040] like Figure 1-6 As shown, an ultrasonic water meter disturbance flow test pipeline tool comprises a fluid pipeline 1, with flange structures 2 provided at both ends of the fluid pipeline 1. An observation window 3 is provided at the end of the fluid pipeline 1. The fluid pipeline 1 is provided with an internal turbulence structure and a bubble generating structure, the internal turbulence structure includes a spiral vortex generating piece 11 and a plurality of spoilers 12, the spiral vortex generating piece 11 is located in the starting section of the flow field of the pipeline, the spiral vortex generating piece 11 is provided with a plurality of ridge-like structures 111, the spoiler 12 is located in the end section of the fluid pipeline, the bubble generating structure includes a plurality of central gas injection holes 13 and a plurality of circumferential gas injection holes 14, the central gas injection hole 13 is provided at the starting point of the spiral vortex generating piece 11, the central gas injection holes 13 are evenly arranged along the diameter direction of the fluid pipeline 1, the circumferential gas injection holes 14 are provided on the fluid pipeline 1 at the starting point of the spiral vortex generating piece, the circumferential gas injection holes 14 are evenly arranged along the inner wall of the fluid pipeline 1, and a plurality of spoilers are evenly distributed on the inner wall of the fluid pipeline 1, and the central gas injection hole 13 and the circumferential gas injection holes 14 are respectively connected to the gas source.

[0041] The two ends of the central gas injection hole 13 are respectively provided with independent regulating valves 4 that can control the injection gas pressure and flow rate. The circumferential gas injection holes 14 are respectively distributed on the circumference of the two semicircular tube walls and are respectively provided with independent regulating valves 4 that can control the injection gas pressure and flow rate.

[0042] The gas pressure in the central gas injection hole 13 is 1.2-1.6 times the water pressure in the fluid pipeline 1 , and the gas pressure in the circumferential gas injection holes 14 is 1.2-1.6 times the water pressure in the fluid pipeline 1 .

[0043] The spiral vortex generating sheet 11 arranged in the fluid pipeline 1 is a thin sheet structure, and the thickness of the thin sheet structure is 1 / 28 to 1 / 32 of the diameter of the fluid pipeline 1, and the optimal is 1 / 30; the pitch of the thin sheet structure is 0.8 times the pipeline diameter to 1.2 times the pipeline diameter, and the optimal is 1 times the pipeline diameter, and the optimal spiral angle is 45°; the surface of the thin sheet structure is a ribbed structure 111 with a rectangular cross-section, and the rib height of the ribbed structure 111 is 1 / 3 to 1 / 2 of the total thickness of the thin sheet structure, and the optimal is 1 / 2, and it is evenly arranged along the water flow direction at a spacing of 2 times the rib height. The thin sheet structure arranged in this way can not only keep the spiral structure from being deformed when impacted by water flow, but also enable the ribbed structure to disturb the bubbles close to the spiral thin sheet structure, so that the bubbles are evenly distributed on the surface of the thin sheet structure with a certain thickness.

[0044] The apertures of the central gas injection hole 13 and the circumferential gas injection holes 14 are 2 mm to 4 mm, usually set to 3 mm. The apertures of the central gas injection hole 13 or the circumferential gas injection holes 14 are evenly distributed on the starting ridges of the thin sheet structure and are connected to the gas source; the circumferential gas injection holes 14 have the same diameter as the central gas injection hole 13 and are evenly distributed on the circumferential surface of the pipe at intervals of 2-4 times the aperture of the circumferential gas injection holes 14.

[0045] The two ends of the central gas injection hole 13 are respectively provided with independent regulating valves (4) capable of controlling the pressure and flow of the injected gas. The circumferential gas injection holes 14 are respectively distributed on the circumferences of the two semicircular tube walls and are respectively provided with independent regulating valves 4 capable of controlling the pressure and flow of the injected gas.

[0046] The gas pressure and gas flow of the exhaust holes on the two semicircles and the starting ridge can be controlled individually by a gas regulating valve. The gas pressure is 1.2-1.6 times the water pressure in the fluid pipeline, and the gas regulating valve 4 can make the gas pressure fluctuate periodically, thereby adjusting the bubbles generated in the pipeline to continuous gas columns or discontinuous bubbles. The pressure and flow fluctuation period can be adjusted.

[0047] A testing method for ultrasonic water meter disturbance flow test pipeline tooling,

[0048] During the simulated flow field operation, the ultrasonic water meter disturbance flow test pipe tool is clamped on the water meter calibration equipment, and the ultrasonic water meter to be tested is simultaneously clamped in series downstream of the ultrasonic water meter disturbance flow test pipe section, and water is passed into the pipe section of the water meter calibration equipment to fill the test pipe section and the ultrasonic water meter with water. Under the condition of being full of water, a characteristic flow error test is performed on the ultrasonic water meter to test the metering characteristic error of the water meter under the simulated vortex flow field, and the test results are compared with the metering characteristic error results of the water meter without the ultrasonic water meter disturbance flow test pipe section, so as to analyze the influence of the vortex flow field on the metering error characteristics of the ultrasonic water meter and make targeted improvements to the ultrasonic water meter structure;

[0049] When gas is injected from one end of the central gas injection hole, the uneven distribution of gas along the centerline is analyzed. The combined effects of the uneven distribution of gas along the centerline and the vortex flow field on the measurement error characteristics of the ultrasonic water meter are analyzed, and targeted improvements are made to the ultrasonic water meter structure. Furthermore, the measurement error characteristics of the ultrasonic water meter can be tested under different conditions by controlling different gas pressures and flows using the gas pressure and flow control valve 4.

[0050] Gas is injected from both ends of the central gas injection hole to analyze the uniform distribution of the centerline gas along the centerline. The combined effects of the uniform centerline gas distribution and the vortex flow field on the ultrasonic water meter's measurement error characteristics are analyzed, and targeted improvements are made to the ultrasonic water meter structure. Furthermore, the ultrasonic water meter's measurement error characteristics can be tested under different conditions by simultaneously adjusting the gas pressure and flow control valves on both sides to control different gas pressures and flows.

[0051] Gas is injected through a circumferential gas injection hole in the wall of a semicircular tube. The combined effects of unilateral circumferential gas distribution and vortex flow on the measurement error characteristics of ultrasonic water meters are analyzed, and targeted improvements are made to the ultrasonic water meter structure. Furthermore, the measurement error characteristics of ultrasonic water meters can be tested under different conditions by simultaneously adjusting the gas pressure and flow rate of the gas regulating valve 4.

[0052] Gas is injected through a circumferential gas injection hole in the wall of a semicircular tube. The combined effects of the circumferential gas distribution and vortex flow field on the ultrasonic water meter's measurement error characteristics are analyzed, and targeted improvements are made to the ultrasonic water meter structure. Furthermore, the ultrasonic water meter's measurement error characteristics can be tested under different conditions by simultaneously adjusting the gas pressure and flow control valves (4) on both sides to control different gas pressures and flows.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An ultrasonic water meter disturbance flow test pipeline tool, characterized by: The invention comprises a fluid pipeline (1), wherein an internal flow disturbance structure and a bubble generating structure are arranged in the fluid pipeline (1), wherein the internal flow disturbance structure comprises a spiral vortex generating sheet (11) and a plurality of flow disturbance sheets (12), wherein the spiral vortex generating sheet (11) is located at the starting section of the flow field of the pipeline, and the flow disturbance sheet (12) is located at the end section of the fluid pipeline, and the bubble generating structure comprises a plurality of central gas injection holes (13) and a plurality of circumferential gas injection holes (14), wherein the central gas injection hole (13) is arranged at the spiral vortex generating sheet (11) and the circumferential gas injection holes (14). At the starting point of the spiral vortex generating piece (11), the central gas injection hole (13) is evenly arranged along the diameter direction of the fluid pipeline (1), and the circumferential gas injection hole (14) is set on the fluid pipeline (1) at the starting point of the spiral vortex generating piece. The circumferential gas injection hole (14) is evenly arranged along the inner wall of the fluid pipeline (1), and a plurality of spoilers are evenly distributed on the inner wall of the fluid pipeline (1). The central gas injection hole (13) and the circumferential gas injection hole (14) are respectively connected to the gas source.

2. The ultrasonic water meter disturbance flow test pipe tool according to claim 1, characterized in that: The spiral vortex generating sheet (11) is a thin sheet structure, the thickness of the spiral vortex generating sheet (11) is 1 / 28-1 / 32 of the diameter of the fluid pipeline, the ratio of the pitch of the spiral vortex generating sheet (11) to the diameter of the fluid pipeline is 0.8-1.2, and the spiral rise angle of the spiral vortex generating sheet (11) is 40°-50°.

3. The ultrasonic water meter disturbance flow test pipe tool according to claim 2, characterized in that: The thickness of the spiral vortex generating sheet (11) is 1 / 30 of the diameter of the fluid pipeline, the ratio of the pitch of the spiral vortex generating sheet (11) to the diameter of the fluid pipeline is 1, and the spiral rise angle of the spiral vortex generating sheet (11) is 45°.

4. The ultrasonic water meter disturbance flow test pipe tool according to claim 2, characterized in that: The spiral vortex generating sheet (11) is provided with a plurality of corrugated structures (111), the cross section of the corrugated structure (111) is rectangular, the corrugated height of the corrugated structure (111) is 1 / 2 of the total thickness of the sheet structure, the plurality of corrugated structures (111) are evenly arranged along the water flow direction at a spacing twice the corrugated height, the central gas injection hole (13) is evenly distributed on the starting corrugated structure (111), and the cross section of the corrugated structure (111) is rectangular.

5. The ultrasonic water meter disturbance flow test pipe tool according to claim 1, characterized in that: The central gas injection hole (13) has a diameter of 2-4 mm, and the spacing between the central gas injection holes (13) is 2-4 times the diameter; the circumferential gas injection holes (14) have a diameter of 2-4 mm, and the spacing between the circumferential gas injection holes (14) is 2-4 times the diameter.

6. The ultrasonic water meter disturbance flow test pipe tool according to claim 1, characterized in that: Independent regulating valves (4) capable of controlling the pressure and flow of the injected gas are respectively provided at both ends of the central gas injection hole (13), and the circumferential gas injection holes (14) are respectively distributed on the circumferences of the two semicircular tube walls and are respectively provided with independent regulating valves (4) capable of controlling the pressure and flow of the injected gas.

7. The ultrasonic water meter disturbance flow test pipe tool according to claim 1, characterized in that: The gas pressure in the central gas injection hole (13) is 1.2-1.6 times the water pressure in the fluid pipeline (1), and the gas pressure in the circumferential gas injection hole (14) is 1.2-1.6 times the water pressure in the fluid pipeline (1).

8. The ultrasonic water meter disturbance flow test pipe tool according to claim 1, characterized in that: Both ends of the fluid pipeline (1) are respectively provided with flange structures (2).

9. The ultrasonic water meter disturbance flow test pipe tool according to claim 1, characterized in that: The end section of the fluid pipeline (1) is provided with an observation window (3).

10. A test method for ultrasonic water meter disturbance flow test pipe tooling, characterized by: Using the ultrasonic water meter disturbance flow test pipeline tooling as described in claims 1-9, During the simulated flow field operation, the ultrasonic water meter disturbance flow test pipe tool is clamped on the water meter calibration equipment, and the ultrasonic water meter to be tested is simultaneously clamped in series downstream of the ultrasonic water meter disturbance flow test pipe section, and water is passed into the pipe section of the water meter calibration equipment to fill the test pipe section and the ultrasonic water meter with water. Under the condition of being full of water, a characteristic flow error test is performed on the ultrasonic water meter to test the metering characteristic error of the water meter under the simulated vortex flow field, and the test results are compared with the metering characteristic error results of the water meter without the ultrasonic water meter disturbance flow test pipe section, so as to analyze the influence of the vortex flow field on the metering error characteristics of the ultrasonic water meter and make targeted improvements to the ultrasonic water meter structure; Inject gas from one end of the central gas injection hole, analyze the uneven distribution of centerline gas along the centerline, analyze the joint influence of centerline gas uneven distribution and vortex flow field on the measurement error characteristics of ultrasonic water meter, and the measurement error characteristics of ultrasonic water meter can be tested under different conditions by controlling different gas pressures and flows through gas pressure and flow regulating valves; Inject gas from both ends of the central gas injection hole, analyze the uniform distribution of the centerline gas along the centerline, analyze the joint influence of the centerline gas uniform distribution and the vortex flow field on the measurement error characteristics of the ultrasonic water meter, and simultaneously adjust the gas pressure and flow control valves on both sides to control different gas pressures and flows to test the measurement error characteristics of the ultrasonic water meter under different conditions; Gas is injected from a circumferential gas injection hole on the wall of a semicircular tube to analyze the combined effects of unilateral circumferential gas distribution and vortex flow field on the measurement error characteristics of ultrasonic water meters. Furthermore, the measurement error characteristics of ultrasonic water meters can be tested under different conditions by simultaneously adjusting the gas pressure and flow control valve to control different gas pressures and flows. Gas is injected from a circumferential gas injection hole on the wall of a semicircular tube, and the combined influence of the circumferential gas distribution and vortex flow field on the measurement error characteristics of the ultrasonic water meter is analyzed. The measurement error characteristics of the ultrasonic water meter can be tested under different conditions by simultaneously adjusting the gas pressure and flow regulating valves on both sides to control different gas pressures and flows.

Images