Fluid flow instrument testing system

Abstract

The utility model discloses a fluid flow instrument testing system, and belongs to the field of fluid flow instrument testing. Comprising a control assembly, an excitation generation assembly, a measurement clamp assembly, a fluid supply assembly and a measurement assembly. The fluid supply assembly is connected with the measuring clamp assembly, the measuring clamp assembly comprises a meter clamping device and at least one meter stringing module, a fluid straight pipe section is embedded in the meter clamping device, a fluid straight pipe section is embedded in each meter stringing module, and the meter stringing modules are used for being connected in series, clamping and fixing fluid flow meters. A fluid straight pipe section on the meter clamping device is in butt joint with a fluid straight pipe section on the meter stringing module, the fluid straight pipe section on the meter stringing module can be in butt joint with a measuring pipe of the fluid flow meter, the meter clamping device is connected with the output end of the fluid supply assembly, or the meter clamping device is arranged between one meter stringing module and the measuring assembly. The meter clamping device is connected with the input end of the measuring assembly and used for pushing the meter stringing module connected with the meter clamping device.

Description

Technical Field

[0001] The present application belongs to the field of fluid flow meter testing, and specifically relates to a fluid flow meter testing system. Background Art

[0002] With the advancement of technology, the application of fluid flow measurement instruments has become increasingly widespread. These instruments can accurately measure fluid flow. With the industrialization of fluid flow measurement instruments, various tests are required, typically performed using fluid flow meter test systems. However, existing fluid flow meter test systems, which utilize ultrasonic measurement technology, struggle to perform the necessary ultrasonic characteristic tests. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a fluid flow meter testing system for a fluid flow meter that uses ultrasonic measurement technology, at least to solve the problem that the fluid flow meter testing system is difficult to perform various necessary tests related to ultrasonic characteristics.

[0004] The embodiment of the present application provides a fluid flow meter testing system, the fluid flow meter testing system comprising: a control component, an excitation generating component, a measuring fixture component, a fluid supply component, and a measuring component;

[0005] The fluid supply assembly is connected to the measuring fixture assembly, and the measuring fixture assembly includes a meter clamp and at least one meter string module. The meter clamp is embedded with a fluid straight pipe section, and each of the meter string modules is embedded with a fluid straight pipe section. The meter string modules are used to connect in series and clamp a fixed fluid flow meter. The fluid straight pipe section on the meter clamp is docked with the fluid straight pipe section on the meter string module, and the fluid straight pipe section on the meter string module can be docked with the measuring tube of the fluid flow meter. The meter clamp is connected to the output end of the fluid supply assembly, or the meter clamp is arranged between one of the meter string modules and the measuring assembly, and the meter clamp is connected to the input end of the measuring assembly. The meter clamp is used to push the meter string module connected thereto so that the meter string modules and the fluid flow meters connected in series to each meter string module are tightly connected to form a closed cavity pipeline for fluid flow required for measurement. The fluid supply assembly is used to supply fluid to the fluid flow meter, and the measuring assembly is used to receive and measure the fluid flowing out of the fluid flow meter, thereby measuring and comparing the fluid flow meter.

[0006] The excitation generating component is connected to the control component, and is used to output an excitation signal to the fluid flow meter. The excitation signal includes at least one of a power supply with adjustable characteristics and an ultrasonic wave with adjustable characteristics.

[0007] Optionally, the excitation generating component includes a programmable power supply, the programmable power supply is connected to the control component, the programmable power supply is used to connect to a fluid flow meter and deliver power with adjustable characteristics to the fluid flow meter;

[0008] The adjustable characteristics of the power supply with adjustable characteristics include at least one of the amplitude of the power supply voltage, the amplitude of the power supply wave, and the type of the power supply wave.

[0009] Optionally, the programmable power supply is connected to a power adapter, and the power adapter is used to connect to a fluid flow meter, so that the programmable power supply transmits power with adjustable characteristics to the fluid flow meter through the power adapter.

[0010] Optionally, the programmable power supply is provided in the power adapter.

[0011] Optionally, the excitation generating component includes a signal generating component and a transducing adapting component;

[0012] The signal generating component is connected to the control component, the signal generating component is electrically connected to the transducer adapter component, the transducer adapter component is connected between the string meter module and the fluid flow meter being measured, or the transducer adapter component is arranged in the string meter module, the transducer adapter component can be in contact with the fluid in the cavity pipeline, and the transducer adapter component is used to generate and send an ultrasonic wave to the corresponding fluid flow meter when receiving a driving signal, or, when receiving an ultrasonic signal transmitted by the fluid, generate and send an ultrasonic response voltage wave;

[0013] Optionally, the excitation generating component further includes a peak detector component, which is connected to the control component and electrically connected to the transducer adapter component. The peak detector component is used to measure the amplitude of the ultrasonic response voltage wave generated by the transducer adapter component and send the measurement result to the control component so that the control component can analyze, control and display it.

[0014] Optionally, the signal generating component is arranged in the energy conversion adapter component.

[0015] Optionally, the energy conversion adapter assembly includes a first energy conversion adapter and a second energy conversion adapter, and the meter-to-meter module includes a first clamp and a second clamp, the first clamp and the second clamp are distributed at both ends of the meter-to-meter module, and the first clamp and the second clamp are both connected to the fluid straight pipe section;

[0016] The first energy conversion adapter is connected to the fluid straight pipe section at one side of the first clamp, and the second energy conversion adapter is connected to the fluid straight pipe section at one side of the second clamp;

[0017] The first transducer adapter and the second transducer adapter are both electrically connected to the signal generating component, and the signal generating component is connected to the control component. One of the first transducer adapter and the second transducer adapter is used to generate and send ultrasonic waves to the fluid in the cavity pipeline when receiving the driving signal sent by the signal generating component. The ultrasonic waves are transmitted to the fluid flow meter under test through the fluid. The other of the first transducer adapter and the second transducer adapter is used to generate and send ultrasonic response voltage waves when receiving the ultrasonic signal transmitted by the fluid.

[0018] Optionally, the excitation generation component includes a programmable power supply, a signal generation component and a transduction adaptation component;

[0019] The programmable power supply is connected to the control component, and the programmable power supply is used to deliver power with adjustable characteristics to the fluid flow meter;

[0020] The signal generating component is connected to the transducer adapter component, and the transducer adapter component is connected between the string meter module and the fluid flow meter being measured, or the transducer adapter component is arranged in the string meter module. The transducer adapter component is used to generate and send ultrasonic waves to the corresponding fluid flow meter when receiving the driving signal generated by the signal generating component, or, when receiving the ultrasonic wave transmitted by the fluid, generate and send an ultrasonic response voltage wave.

[0021] Optionally, the fluid supply assembly includes a fluid box, a drive pump, a pressure-surge tank, and a flow supply valve;

[0022] The fluid box stores fluid, the pressure stabilizing tank is connected to the fluid box via the driving pump, the flow supply valve is connected to the pressure stabilizing tank, the flow supply valve is used to connect the fluid straight pipe section and the fluid flow meter, the driving pump is used to transfer the fluid in the fluid box to the pressure stabilizing tank, the pressure stabilizing tank is used to stabilize the pressure of the fluid, and the flow supply valve can be switched between an open state and a closed state;

[0023] When the flow supply valve is in the open state, the fluid in the pressure stabilizing tank can be transmitted to the fluid straight pipe section and the fluid flow meter through the flow supply valve; when the flow supply valve is in the closed state, the fluid in the pressure stabilizing tank is interrupted from being transmitted to the fluid straight pipe section and the fluid flow meter.

[0024] Optionally, the measurement component includes a high-precision measurement component;

[0025] The high-precision measurement assembly includes a shunt pipe, multiple shunt valves, multiple first pressure gauges, multiple first temperature gauges, multiple first flow meters, and a manifold; one of the shunt valves, one of the first pressure gauges, one of the first temperature gauges, and one of the first flow meters are sequentially connected to form a measurement branch, the first end of each of the measurement branches is connected to the shunt pipe, and the second end of each of the measurement branches is connected to the manifold, and the shunt pipe is used to connect the fluid straight pipe section so that the fluid flowing through the fluid flow meter and the fluid straight pipe section flows into the shunt pipe;

[0026] The fluid flowing out of the manifold can flow into the fluid supply assembly so that the fluid can be circulated.

[0027] Optionally, the measurement component includes a simple measurement component;

[0028] The simple measurement assembly includes a second temperature gauge, a second pressure gauge, a visual flow meter, and an outflow valve. The visual flow meter is connected to the fluid straight pipe section of the string meter module, so that the fluid flowing through the fluid flow meter flows through the fluid straight pipe section and then flows through the visual flow meter. The second temperature gauge and the second pressure gauge are both connected to the connecting pipe between the visual flow meter and the fluid straight pipe section. The outflow valve is connected to the visual flow meter, and the outflow valve switches between an open state and a closed state.

[0029] When the outflow valve is in an open state, the fluid flowing out of the outflow valve can flow into the fluid supply assembly, so that the fluid is circulated.

[0030] Optionally, the measuring component includes a weighing measuring component;

[0031] The weighing and measuring assembly includes a container, a weighing member, and a discharge valve. The container is arranged on the weighing member. The fluid flowing out of the straight fluid pipe section on the serial meter module can flow into the container. The weighing member is used to weigh the container. The discharge valve is connected to the container. The discharge valve switches between an open state and a closed state. The output end of the discharge valve faces the fluid supply assembly to inject the fluid flowing through the discharge valve into the fluid supply assembly.

[0032] When the drain valve is in an open state, the fluid flowing out of the drain valve can flow into the fluid supply assembly, so that the fluid is circulated.

[0033] Optionally, the fluid flow meter testing system further comprises a condensation element;

[0034] The condensation piece is arranged at the fluid inlet of the weighing and measuring component. The fluid flowing through the series meter module and the fluid flow meter flows into the condensation piece. The condensed fluid flowing out of the condensation piece can flow into the containing piece so that the weighing and measuring component can weigh the inflowing fluid.

[0035] Optionally, the fluid flow meter testing system further includes a constant temperature control component;

[0036] The constant temperature control component is connected to the fluid supply component, the series meter module, and the fluid straight pipe section, and the constant temperature control component is used to control and adjust the fluid temperature.

[0037] Optionally, the fluid flow meter testing system further comprises a data acquisition component, wherein the data acquisition component is configured to be connected to the fluid flow meter signal so that the data acquisition component can acquire information from the fluid flow meter;

[0038] The control components are connected to the data acquisition components by wires, or the control components are connected to the data acquisition components wirelessly.

[0039] Optionally, the control component is connected to the excitation generating component and the measuring component by wires, or the control component is connected to the excitation generating component and the measuring component by wireless.

[0040] In an embodiment of the present application, since the fluid straight pipe section on the meter clamp is docked with the fluid straight pipe section on the string meter module, the fluid straight pipe section on the string meter module can be docked with the measuring tube of the fluid flow meter, the meter clamp is connected to the output end of the fluid supply component, or the meter clamp is arranged between a string meter module and the measuring component, and the meter clamp is connected to the input end of the measuring component. Therefore, the string meter module can be connected in series and clamped to fix the fluid flow meter, and the string meter module connected to it can be pushed by the meter clamp, so that each string meter module and the fluid flow meter connected in series to each string meter module are tightly connected to form a closed cavity pipeline for fluid flow required for measurement, so that the fluid supply component can allow the fluid to flow into the fluid straight pipe section on the meter clamp, and then the fluid can flow through the fluid straight pipe section of each string meter module and the fluid flow meter clamped by each string meter module. Furthermore, during the process of fluid flowing through each fluid flow meter, an excitation signal can be output to each fluid flow meter via an excitation generating assembly. After the fluid flowing out of the fluid flow meter flows into the measuring assembly, the measuring assembly can measure and compare the fluid flowing out of the flow meter after receiving the excitation signal to determine the performance of the fluid flow meter. The excitation signal includes at least one of a power supply with adjustable characteristics and an ultrasonic wave with adjustable characteristics. When the excitation signal is sent to the fluid flow meter, the adjustable characteristics of the power supply and / or the adjustable characteristics of the ultrasonic wave can be adjusted so that the fluid flow meter receives the power supply with adjustable characteristics and / or the ultrasonic wave with adjustable characteristics. The excitation signal can then ensure that various relevant tests can be performed on the fluid flow meter. That is, in the embodiment of the present application, by providing an excitation generating assembly, the excitation generating assembly outputs the power supply with adjustable characteristics and / or the ultrasonic wave with adjustable characteristics to the fluid flow meter, so that the power supply or the ultrasonic wave received by the fluid flow meter changes, thereby enabling various tests to be performed on the fluid flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram showing a fluid flow meter testing system provided in an embodiment of the present application;

[0042] Figure 2 A schematic diagram showing an excitation generating component including a programmable power supply in a fluid flow meter test system provided by an embodiment of the present application;

[0043] Figure 3 A schematic diagram showing an excitation generating component in a fluid flow meter test system provided by an embodiment of the present application, including a signal generating component and a transducer adapter component.

[0044] Reference numerals:

[0045] 001: Fluid flow meter; 10: Control component; 11: Central controller; 12: Programmable logic controller; 20: Excitation generation component; 21: Programmable power supply; 22: Signal generation component; 23: Transducer adapter component; 211: Power adapter; 231: First transducer adapter; 232: Second transducer adapter; 30: Measuring fixture component; 31: Meter clamp; 32: Meter string module; 321: First clamp; 322: Second clamp; 40: Fluid supply component; 41: Fluid box; 42: Drive pump; 43: Metering fixture; 44: Metering fixture; 45: Metering fixture; 46: Metering fixture; 47: Metering fixture; 48: Metering fixture; 49: Metering fixture; 50: Metering fixture; 51: Metering fixture; 52: Metering fixture; 53: Metering fixture; 54: Metering fixture; 55: Metering fixture; 56: Metering fixture; 57: Metering fixture; 58: Metering fixture; 59: Metering fixture; 60: Metering fixture; 61: Metering fixture; 62: Metering fixture; 63: Metering fixture; 64: Metering fixture; 65: Metering fixture; 66: Metering fixture; 67: Metering fixture; 68: Metering fixture; 69: Metering fixture; 70: Metering fixture; 71: Metering fixture; 72: Metering fixture; 73: Metering fixture; 74: Metering fixture; 75: Metering fixture; 76: Metering fixture; 77: Metering fixture; 78: Metering fixture; 79: Metering fixture; 80: Metering fixture; 3: Pressure regulating tank; 44: Flow supply valve; 50: Measuring component; 51: High-precision measuring component; 52: Simple measuring component; 53: Weighing and measuring component; 511: Diverter pipe; 512: Diverter valve; 513: First pressure gauge; 514: First temperature gauge; 515: First flow meter; 516: Manifold; 521: Second temperature gauge; 522: Second pressure gauge; 523: Visual flow meter; 524: Outflow valve; 531: Container; 532: Weighing component; 533: Discharge valve; 60: Data acquisition component. DETAILED DESCRIPTION

[0046] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0049] like Figures 1 to 3 As shown, the fluid flow meter 001 test system includes: a control component 10, an excitation generating component 20, a measuring fixture component 30, a fluid supply component 40 and a measuring component 50.

[0050] The fluid supply component 40 is connected to the measuring fixture component 30. The measuring fixture component 30 includes a meter clamp 31 and at least one meter string module 32. The meter clamp 31 is embedded with a fluid straight pipe section. Each meter string module 32 is embedded with a fluid straight pipe section. The meter string module 32 is used to connect and clamp the fixed fluid flow meter 001 in series. The fluid straight pipe section on the meter clamp 31 is docked with the fluid straight pipe section on the meter string module 32. The fluid straight pipe section on the meter string module 32 can be docked with the measuring tube of the fluid flow meter 001. The meter clamp 31 is connected to the output end of the fluid supply component 40, or the meter clamp 31 is set between a meter string module 32 and the measuring component 50, and the meter clamp 31 is connected to the input of the measuring component 50. The meter clamp 31 is used to push the meter string module 32 connected to it, so that each meter string module 32 and the fluid flow meter 001 connected in series with each meter string module 32 are tightly connected to form a closed cavity pipeline for the fluid flow required for measurement. The fluid supply component 40 is used to supply fluid to the fluid flow meter 001, and the measuring component 50 is used to receive and measure the fluid flowing out of the fluid flow meter 001, so as to measure and compare the fluid flow meter 001; the excitation generating component 20 is connected to the control component 10, and the excitation generating component 20 is used to output an excitation signal to the fluid flow meter 001, and the excitation signal includes at least one of a power supply with adjustable characteristics and an ultrasonic wave with adjustable characteristics.

[0051] In an embodiment of the present application, the fluid straight pipe section on the meter clamp 31 is docked with the fluid straight pipe section on the string meter module 32, and the fluid straight pipe section on the string meter module 32 can be docked with the measuring tube of the fluid flow meter 001. The meter clamp 31 is connected to the output end of the fluid supply component 40, or the meter clamp 31 is arranged between a string meter module 32 and the measuring component 50, and the meter clamp 31 is connected to the input end of the measuring component 50. Therefore, the string meter module 32 can be connected in series and clamped to fix the fluid flow meter 001, and the meter clamp 31 is used to push the string meter module 32 connected to it, so that the string meter module 32 and the fluid flow meter 001 connected in series with the string meter module 32 are tightly connected to form a closed cavity pipeline for fluid flow required for measurement, so that the fluid supply component 40 can allow the fluid to flow into the fluid straight pipe section on the meter clamp 31, and then the fluid can flow through the fluid straight pipe sections of each string meter module 32 and the fluid flow meter 001 clamped by each string meter module 32. Furthermore, during the process of fluid flowing through the fluid flow meter 001, an excitation signal can be output to each fluid flow meter 001 via the excitation generating assembly 20. At this time, the fluid flow meter 001 and the measuring assembly 50 measure and compare the inflowing fluid to determine whether the various performance characteristics of the fluid flow meter 001 meet the specifications. The excitation signal includes at least one of a power supply with adjustable characteristics and an ultrasonic wave with adjustable characteristics. Therefore, when the excitation signal is sent to the fluid flow meter 001, the adjustable characteristics of the power supply and / or the adjustable characteristics of the ultrasonic wave can be adjusted, so that the power supply with adjustable characteristics and / or the ultrasonic wave with adjustable characteristics received by the fluid flow meter 001 can be adjusted. Then, by adjusting the excitation signal, various related tests can be performed on the fluid flow meter 001. That is, in the embodiment of the present application, by providing the excitation generating assembly 20, the excitation generating assembly 20 outputs the power supply with adjustable characteristics and / or the ultrasonic wave with adjustable characteristics to the fluid flow meter 001, so that the power supply or the ultrasonic wave received by the fluid flow meter 001 changes, thereby enabling various tests to be performed on the fluid flow meter 001.

[0052] It should be noted that in the embodiments of the present application, the tests performed on the fluid flow measurement instrument include but are not limited to durability test, wear resistance test, power supply noise reliability test, etc. The specific tests may be as follows:

[0053] (a) Maximum operating voltage durability / wear test: The output voltage of the excitation generating assembly 20 is adjusted to the maximum operating voltage Vmax of the fluid flow measuring instrument. Then, a durability / wear test is performed in accordance with the durability / wear test requirements of the fluid flow measuring instrument to observe whether the fluid flow measuring instrument can meet the metering accuracy requirements at different flow rates and flow rates. (b) Typical operating voltage durability / wear test: The output voltage of the excitation generating assembly 20 is adjusted to the typical operating voltage Vtyp of the fluid flow measuring instrument. Then, a durability / wear test is performed in accordance with the durability / wear test requirements of the fluid flow measuring instrument to observe whether the fluid flow measuring instrument can meet the metering accuracy requirements at different flow rates and flow rates. (c) Minimum operating voltage durability / wear test: The output voltage of the excitation generating assembly 20 is adjusted to the minimum operating voltage Vmin of the fluid flow measuring instrument. Then, a durability / wear test is performed in accordance with the durability / wear test requirements of the fluid flow measuring instrument to observe whether the fluid flow measuring instrument can meet the metering accuracy requirements at different flow rates and flow rates.

[0054] When conducting power supply noise reliability testing on fluid flow measurement instruments, the specific tests can be as follows:

[0055] (d) Power supply noise test at maximum operating voltage: Adjust the output voltage of the excitation generating assembly 20 to the maximum operating voltage Vmax of the device. Add power supply noise of the corresponding amplitude and type to the power supply output according to the test requirements, such as a 50Hz 50mV sine wave voltage noise. Then observe whether the fluid flow measurement instrument can meet the measurement accuracy requirements at different flow rates and flow rates. (e) Power supply noise test at typical operating voltage: Adjust the output voltage of the excitation generating assembly 20 to the typical operating voltage Vtyp of the device. Add power supply noise of the corresponding amplitude and type to the power supply output according to the test requirements, such as a 50Hz 50mV sine wave voltage noise. Then observe whether the fluid flow measurement instrument can meet the measurement accuracy requirements at different flow rates and flow rates. (f) Power supply noise test at minimum operating voltage: Adjust the output voltage of the excitation generating assembly 20 to the minimum operating voltage Vmin of the device. Add power supply noise of the corresponding amplitude and type to the power supply output according to the test requirements, such as a 50Hz 50mV sine wave voltage noise. Then observe whether the fluid flow measurement instrument can meet the measurement accuracy requirements at different flow rates and flow rates.

[0056] In addition, in the embodiments of the present application, the fluid can be various fluids such as water, oil, gas, alcohol, etc. When the fluid is water, the fluid flow measuring instrument can be used as a water meter to detect the flow of water; when the fluid is gas, the fluid flow measuring instrument can be used as a gas meter to detect the flow of gas; when the fluid is oil, the fluid flow measuring instrument can be used as an oil meter to detect the flow of oil.

[0057] In addition, in the embodiment of the present application, the number of string meter modules 32 can be set according to actual needs. When the number of string meter modules 32 is one, it is equivalent to testing only one fluid flow meter through the fluid flow meter testing system; when the number of string meter modules 32 is multiple, it is equivalent to testing multiple fluid flow meters through the fluid flow meter testing system, wherein the multiple string meter modules 32 can be arranged at intervals.

[0058] In addition, in some embodiments, the excitation generating component 20 may include a programmable power supply 21, which is connected to the control component 10. The programmable power supply 21 is used to connect to the fluid flow meter 001 and transmit power with adjustable characteristics to the fluid flow meter 001; wherein the adjustable characteristics of the power supply with adjustable characteristics include at least one of the amplitude of the power supply voltage, the amplitude of the power supply wave, and the type of the power supply wave.

[0059] Through this configuration, the programmable characteristics of the programmable power supply 21 can be utilized to enable the programmable power supply 21 to output power with adjustable characteristics. Thus, the fluid flow meter 001 can receive the power with adjustable characteristics, allowing various tests to be performed on the fluid flow meter 001, such as maximum operating voltage durability / wear resistance testing and power supply noise testing at maximum operating voltage. Furthermore, the adjustable characteristics of the power supply with adjustable characteristics include at least one of the power supply voltage amplitude, power supply ripple amplitude, and power supply ripple type. Thus, specific characteristics of the power supply with adjustable characteristics can be selected according to actual needs, such as the power supply ripple amplitude or the power supply voltage amplitude, thereby ensuring that the characteristics of the power supply received by the fluid flow meter 001 can be varied, allowing various tests to be performed on the fluid flow meter 001.

[0060] In addition, in some embodiments, the programmable power supply 21 is connected to a power adapter 211 , which is used to connect to the fluid flow meter 001 so that the programmable power supply 21 can deliver power with adjustable characteristics to the fluid flow meter 001 through the power adapter 211 .

[0061] With this arrangement, when it is necessary to connect the programmable power supply 21 to the fluid flow meter 001 so that the programmable power supply 21 outputs power with adjustable characteristics to the fluid flow meter 001, the power adapter 211 can be directly connected to the fluid flow meter 001. Thus, the programmable power supply 21 can transmit power with adjustable characteristics to the fluid flow meter 001 via the power adapter 211. In other words, by providing the power adapter 211, it is possible to facilitate the programmable power supply 21 to transmit power with adjustable characteristics to the fluid flow meter 001.

[0062] It should be noted that in the embodiment of the present application, the power adapter 211 can be a plug. Of course, the power adapter 211 can also be other components that can be connected to the fluid flow meter 001. It is only necessary for the power adapter 211 to be able to connect to the fluid flow meter 001 to power the fluid flow meter 001. The specific type and structure of the power adapter 211 are not limited in the embodiment of the present application.

[0063] In addition, in some embodiments, the programmable power supply 21 is provided in the power adapter 211. This arrangement can improve the integration of the programmable power supply 21 and the power adapter 211, and also shorten the electrical connection line between the programmable power supply 21 and the programmable power supply 21, thereby reducing power supply attenuation and loss. In addition, when installing the programmable power supply 21, the power adapter 211 can be installed at the same time, thereby improving the assembly efficiency of the fluid flow meter 001 test system.

[0064] In addition, in some embodiments, the excitation generating component 20 may include a signal generating component 22 and a transducer adapter component 23; the signal generating component 22 is connected to the control component 10, the signal generating component 22 is electrically connected to the transducer adapter component 23, the transducer adapter component 23 is connected between the string meter module 32 and the measured fluid flow meter 001, or the transducer adapter component 23 is arranged in the string meter module 32, the transducer adapter component 23 can be in contact with the fluid in the cavity pipeline, and the transducer adapter component 23 is used to generate and send ultrasonic waves to the corresponding fluid flow meter 001 when receiving a driving signal, or, when receiving an ultrasonic signal transmitted by the fluid, generate and send an ultrasonic response voltage wave.

[0065] Since the signal generating component 22 is connected to the control component 10, and the signal generating component 22 is electrically connected to the transducer adapter component 23, the control component 10 can control the signal generating component 22 so that the signal generating component 22 generates and sends a driving signal, and the transducer adapter component 23 can receive the driving signal and generate and send an ultrasonic wave to the corresponding fluid flow meter 001. Of course, the transducer adapter component 23 can also generate and send an ultrasonic response voltage wave when receiving an ultrasonic signal transmitted by the fluid, and then adjust the characteristics of the driving signal generated and sent by the signal generating component 22 according to the ultrasonic response voltage wave, such as the frequency and amplitude of the driving signal. Among them, the transducer adapter component 23 sends an ultrasonic wave to the fluid flow meter 001, and the ultrasonic wave can simulate the ultrasonic noise caused by the environment in which the fluid flow meter 001 is located, so that an ultrasonic noise test can be performed on the fluid flow meter 001.

[0066] In addition, in the embodiment of the present application, when installing the transducer adapter assembly 23, the transducer adapter assembly 23 can be connected between the meter-in-line module 32 and the fluid flow meter 001 under test, which is equivalent to installing the transducer adapter assembly 23 on the straight fluid pipe section of the meter-in-line module 32. When the transducer adapter assembly 23 is set in the meter-in-line module 32, the transducer adapter assembly 23 can be embedded in the straight fluid pipe section of the meter-in-line module 32. On the one hand, the assembly work of the transducer adapter assembly 23 during the test process is eliminated, and on the other hand, the attenuation and loss of ultrasonic transmission and reception can be reduced.

[0067] In addition, in some embodiments, the excitation generating component 20 may also include a peak detector component (not shown in the figure), which is connected to the control component 10 and electrically connected to the transducer adapter component 23. The peak detector component is used to measure the amplitude of the ultrasonic response voltage wave generated by the transducer adapter component 23, and send the measurement result to the control component 10 so that the control component 10 can analyze, control and display it.

[0068] With this arrangement, when the transducer adapter component 23 receives ultrasound and generates an ultrasonic response voltage wave, the peak detector component can detect the amplitude of the ultrasonic response voltage wave and send the detection result to the control component 10. The control component 10 can then analyze, control, and display the detection structure, so that the control component 10 can subsequently adjust the intensity of the excitation signal output by the excitation generating component 20. In other words, by providing the peak detector component, the control component 10 can adjust the intensity of the excitation signal output by the excitation generating component 20 based on the detection result of the peak detector component to achieve response testing.

[0069] In addition, in some embodiments, the signal generating component 22 is disposed in the energy conversion adapter component 23. This arrangement, on the one hand, can improve the integration of the signal generating component 22 and the energy conversion adapter component 23, thereby reducing the attenuation of the signal sent from the signal generating component 22 to the energy conversion adapter component 23. On the other hand, when the energy conversion adapter component 23 is installed, the signal generating component 22 can be installed at the same time, thereby improving the production and assembly efficiency of the fluid flow meter 001 test system.

[0070] In addition, in some embodiments, the energy conversion adapter component 23 may include a first energy conversion adapter 231 and a second energy conversion adapter 232, and the string meter module 32 may include a first clamp 321 and a second clamp 322, the first clamp 321 and the second clamp 322 are distributed at both ends of the string meter module 32, and the first clamp 321 and the second clamp 322 are both connected to the fluid straight pipe section; the first energy conversion adapter 231 is connected to the fluid straight pipe section on one side of the first clamp 321, and the second energy conversion adapter 232 is connected to the fluid straight pipe section on one side of the second clamp 322; the first energy conversion adapter The first transducer adapter 231 and the second transducer adapter 232 are both electrically connected to the signal generating assembly 22, which is connected to the control assembly 10. Upon receiving the driving signal from the signal generating assembly 22, one of the first transducer adapter 231 and the second transducer adapter 232 is configured to generate and transmit ultrasonic waves into the fluid in the cavity pipeline. The ultrasonic waves are transmitted through the fluid to the measured fluid flow meter 001. The other of the first transducer adapter 231 and the second transducer adapter 232 is configured to generate and transmit ultrasonic response voltage waves upon receiving the ultrasonic signal transmitted by the fluid. The ultrasonic response voltage can be transmitted to the peak detector assembly, which transmits the detection value to the control assembly 10.

[0071] Through such a setting, once the signal generating component 22 sends out a driving signal, if the first transducer adapter 231 is used as a component for emitting ultrasonic waves and the second transducer adapter 232 is used as a component for receiving ultrasonic waves, then the first transducer adapter 231 can receive the driving signal and generate and send ultrasonic waves to the fluid in the cavity pipeline, and the second transducer adapter 232 can receive the ultrasonic waves, so that the second transducer adapter 232 can generate and send ultrasonic response voltage waves to the peak detector component, so that the peak detector component detects the ultrasonic response voltage waves sent by the second transducer adapter 232 and sends them to the peak detector component. The detection results are sent to the control component 10; if the second transducer adapter serves as a component for emitting ultrasonic waves and the first transducer adapter 231 serves as a component for receiving ultrasonic waves, then the second transducer adapter 232 can receive the driving signal, and generate and send ultrasonic waves to the fluid in the cavity pipeline, and the first transducer adapter 231 can receive the ultrasonic waves, so that the first transducer adapter 231 can generate and send ultrasonic response voltage waves to the peak detector component, so that the peak detector component detects the ultrasonic response voltage wave sent by the first transducer adapter 231, and sends the detection results to the control component 10.

[0072] In addition, in the embodiment of the present application, the fluid flow meter 001 test system may further include a bracket, and the first clamping member 321 and the second clamping member 322 are both arranged on the bracket.

[0073] It should be noted that, in the embodiment of the present application, both the first energy conversion adapter 231 and the second energy conversion adapter 232 are integrated with transducers.

[0074] In some embodiments, the excitation generating assembly 20 may include a programmable power supply 21, a signal generating assembly 22, and a transducer adapter assembly 23. The programmable power supply 21 is connected to the control assembly 10 and is used to deliver power with adjustable characteristics to the fluid flow meter 001. The signal generating assembly 22 is electrically connected to the transducer adapter assembly 23, which is connected between the string meter module 32 and the fluid flow meter 001 under test. The transducer adapter assembly 23 is used to generate and transmit an ultrasonic wave to the corresponding fluid flow meter 001 upon receiving a drive signal generated by the signal generating assembly 22, or to generate and transmit an ultrasonic response voltage wave upon receiving an ultrasonic wave transmitted by the fluid. With this configuration, the programmable power supply 21 can output power with adjustable characteristics to the fluid flow meter 001, and the signal generating assembly 22 and the transducer assembly can also output ultrasonic waves with adjustable characteristics to the fluid flow meter 001. In other words, with this configuration, a wide variety of excitation signals can be delivered to the fluid flow meter 001, ensuring that various required tests can be performed on the fluid flow meter 001.

[0075] In addition, in some embodiments, the fluid supply assembly 40 may include a fluid box 41, a drive pump 42, a pressure-stabilizing tank 43 and a flow supply valve 44; the fluid box 41 stores fluid, the fluid box 41 is connected to the pressure-stabilizing tank 43 through the drive pump 42, and the flow supply valve 44 is connected to the pressure-stabilizing tank 43. The flow supply valve 44 is used to connect the fluid straight pipe section and the fluid flow meter 001. The drive pump 42 is used to transfer the fluid in the fluid box 41 to the pressure-stabilizing tank 43. The pressure-stabilizing tank 43 is used to stabilize the pressure of the fluid. The flow supply valve 44 can be switched between an open state and a closed state; when the flow supply valve 44 is in an open state, the fluid in the pressure-stabilizing tank 43 can be transferred to the fluid straight pipe section and the fluid flow meter 001 through the flow supply valve 44; when the flow supply valve 44 is in a closed state, the fluid in the pressure-stabilizing tank 43 is interrupted from being transferred to the fluid straight pipe section and the fluid flow meter 001.

[0076] With this arrangement, the driving pump 42 can direct the fluid in the fluid box 41 into the pressure-surge tank 43, which then stabilizes the pressure of the fluid. The flow supply valve 44 can then be opened, i.e., the flow supply valve 44 is in an open state, so that the fluid flowing out of the flow supply valve 44 can flow into the fluid straight pipe section and the fluid flow meter 001. Once the excitation generating assembly 20 outputs an excitation signal to the fluid flow meter 001, various tests can be performed on the fluid flow meter 001. That is, through the fluid box 41, the driving pump 42, the pressure-surge tank 43, and the flow supply valve 44, the fluid can flow through the fluid flow meter 001, thereby facilitating various tests on the fluid flow meter.

[0077] In addition, in some embodiments, the measuring component 50 may include a high-precision measuring component 51; the high-precision measuring component 51 includes a diverter pipe 511, multiple diverter valves 512, multiple first pressure gauges 513, multiple first thermometers 514, multiple first flow meters 515 and a manifold 516; a diverter valve 512, a first pressure gauge 513, a first thermometer 514 and a first flow meter 515 are connected in sequence to form a measuring branch, and the measuring range of each measuring branch may be the same or different; the first end of each measuring branch is connected to the diverter pipe 511, and the second end of each measuring branch is connected to the manifold 516, and the diverter pipe 511 is used to connect the fluid straight pipe section so that the fluid flowing through the fluid flow meter 001 and the fluid straight pipe section flows into the diverter pipe 511; wherein, the fluid flowing out of the manifold 516 can flow into the fluid supply component 40 so that the fluid is recycled.

[0078] With this arrangement, once the fluid flows out of the fluid flow meter 001 and flows into the diverter pipe 511, the fluid can flow through the plurality of diverter valves 512 in sequence through the first pressure gauge 513, the first thermometer 514, and the first flowmeter 515 connected to the corresponding diverter valve 512, and finally flow into the manifold 516, where it is converged and then flows into the fluid supply assembly 40, so that the fluid can be recycled. In this process, the plurality of first pressure gauges 513, the plurality of first thermometers 514, and the plurality of first flowmeters 515 can detect and measure the fluid flowing through, thereby enabling the high-precision measurement assembly 51 to perform high-precision detection and measurement of the fluid flowing through, thereby achieving effective comparison, calibration, or verification of the various measurement performances of the measured fluid flow meter 001.

[0079] It should be noted that multiple pipes can be connected between the diverter pipe 511 and the conduit pipe 516 , and each pipe can be connected to a diverter valve 512 , a first pressure gauge 513 , a first thermometer 514 and a first flow meter 515 .

[0080] It should also be noted that the fluid flowing out of the manifold 516 can flow into the fluid box 41 .

[0081] In addition, in some embodiments, the measuring component 50 may include a simple measuring component 52; the simple measuring component 52 includes a second thermometer 521, a second pressure gauge 522, a visual flow meter 523 and an outflow valve 524. The visual flow meter 523 is connected to the fluid straight pipe section of the string meter module 32, so that the fluid flowing through the fluid flow meter 001 flows through the fluid straight pipe section and then flows through the visual flow meter 523. The second thermometer 521 and the second pressure gauge 522 are both connected to the connecting pipe between the visual flow meter 523 and the fluid straight pipe section to achieve effective measurement. The outflow valve 524 is connected to the outflow end of the visual flow meter 523, and the outflow valve 524 switches between an open state and a closed state. When the outflow valve 524 is in an open state, the fluid flowing out of the outflow valve 524 can flow into the fluid supply component 40 so that the fluid can be recycled.

[0082] With this arrangement, once fluid flows out of fluid flow meter 001 and into the connecting pipe connected to visual flow meter 523, second thermometer 521 and second pressure gauge 522 can detect the fluid, and visual flow meter 523 can also detect and measure the fluid, thereby facilitating comparison and determination of whether the performance of fluid flow meter 001 meets requirements. Furthermore, when outflow valve 524 is open, fluid flowing out of visual flow meter 523 can flow through outflow valve 524 and into fluid supply assembly 40, allowing the fluid to be recycled.

[0083] It should be noted that the fluid flowing out of the outflow valve 524 can flow into the fluid box 41 .

[0084] In addition, in some embodiments, the measuring component 50 may include a weighing and measuring component 53; the weighing and measuring component 53 includes a container 531, a weighing component 532 and a drain valve 533, the container 531 is arranged on the weighing component 532, and the fluid flowing out through the straight fluid pipe section on the string meter module 32 can flow into the container 531, the weighing component 532 is used to weigh the container 531, and the drain valve 533 is connected to the container 531, the drain valve 533 switches between an open state and a closed state, and the output end of the drain valve 533 faces the fluid supply component 40 to inject the fluid flowing through the drain valve 533 into the fluid supply component 40; when the drain valve 533 is in an open state, the fluid flowing out of the drain valve 533 can flow into the fluid supply component 40 so that the fluid can be recycled. With this arrangement, once fluid flows out of the fluid flow meter 001 and into the container 531, the weighing element 532 can weigh the fluid in the container 531 to determine the mass of the fluid flowing out of the fluid flow meter 001. This mass can then be used to compare and determine the performance of the fluid flow meter 001. Furthermore, the container 531 is connected to a drain valve 533. After the weighing element 532 completes its weighing, the drain valve 533 can be opened, allowing the fluid in the container 531 to flow through the drain valve 533 into the fluid supply assembly 40, allowing the fluid to be recycled.

[0085] It should be noted that the fluid flowing out of the container 531 can flow into the fluid box 41 .

[0086] It should also be noted that, in an embodiment of the present application, the measuring component 50 may further include at least two of the high-precision measuring component 51, the simple measuring component 52 and the weighing measuring component 53. For example, the measuring component 50 includes the high-precision measuring component 51 and the weighing measuring component 53. For another example, the measuring component 50 includes the high-precision measuring component 51 and the simple measuring component 52. For another example, the measuring component 50 includes the simple measuring component 52 and the weighing measuring component 53. For another example, the measuring component 50 includes the high-precision measuring component 51, the simple measuring component 52 and the weighing measuring component 53. When the measuring assembly 50 includes the high-precision measuring assembly 51 and the weighing measuring assembly 53, the fluid flowing out of the manifold 516 can flow into the receiving member 531. When the measuring assembly 50 includes the high-precision measuring assembly 51 and the simple measuring assembly 52, the manifold 516 can be connected to the fluid pipeline connected to the visual flow meter 523, so that the fluid flowing out of the manifold 516 can flow into the fluid pipeline, and then the visual flow meter 523, the second temperature gauge 521, and the second pressure gauge 522 continue to measure the fluid in the fluid pipeline. The fluid is detected; when the measuring component 50 includes a simple measuring component 52 and a weighing measuring component 53, at this time, the fluid flowing out of the outflow valve 524 can flow into the container 531; when the measuring component 50 includes a high-precision measuring component 51, a simple measuring component 52 and a weighing measuring component 53, at this time, the manifold 516 can be connected to the fluid pipeline connected to the visual flow meter 523, and the fluid flowing out of the outflow valve 524 can flow into the container 531, and the fluid flowing out of the drain valve 533 can flow into the fluid supply component 40.

[0087] In addition, in some embodiments, the fluid flow meter 001 test system may further include a condensation piece (not shown in the figure); the condensation piece is arranged at the fluid inlet of the weighing and measuring component 53, and the fluid flowing through the string meter module 32 and the fluid flow meter 001 flows into the condensation piece, and the condensed fluid flowing out of the condensation piece can flow into the containing piece 531, so that the weighing and measuring component 53 can weigh the flowing fluid.

[0088] With this arrangement, once the fluid flowing through the string meter module 32 and the fluid flow meter 001 is gas, the gas can condense into liquid after entering the condensation element. The condensed fluid can then flow into the container 531, facilitating the weighing and measurement assembly 53 to weigh the flowing fluid. That is, by providing the condensation element, the fluid flow meter 001 can flow not only liquids but also gases, thereby enabling testing of the fluid flow meter 001 for different types of fluids. That is, by providing the condensation element, it is possible to ensure that the fluid flow meter 001 can also be tested for gases, thereby expanding the test range of the fluid flow meter 001.

[0089] In addition, in some embodiments, the fluid flow meter 001 test system may also include a constant temperature control component (not shown in the figure); the constant temperature control component is connected to the fluid supply component 40, the string meter module 32, and the fluid straight pipe section, and the constant temperature control component is used to control and adjust the fluid temperature.

[0090] Through such a setting, the constant temperature control component can control the temperature of the fluid, so that the temperature of the fluid flowing through the fluid flow meter 001 can be changed, thereby further expanding the test range of the fluid flow meter 001 and increasing the test content of the fluid flow meter 001.

[0091] In addition, in some embodiments, the fluid flow meter 001 test system may further include a data acquisition component 60, which is used to connect to the fluid flow meter 001 signal so that the data acquisition component 60 can collect information from the fluid flow meter 001; the control component 10 is respectively connected to the data acquisition component 60 by wire, or the control component 10 is wirelessly connected to the data acquisition component 60.

[0092] With this arrangement, once the excitation generating component 20 outputs an excitation signal to the fluid flow meter 001, the data acquisition component 60 can collect information from the fluid flow meter 001. The data acquisition component 60 then sends the collected information to the control component 10. The control component 10 is electrically connected to the measuring component 50, allowing the control component 10 to obtain measurement results from the measuring component 50. The control component 10 compares the information collected by the data acquisition component 60 with the measurement results of the measuring component 50 to determine whether the performance indicators of the fluid flow meter 001 meet the requirements. In other words, by providing the data acquisition component 60, the control component 10 can easily obtain information from the fluid flow meter 001 and thus determine whether the performance indicators of the fluid flow meter 001 meet the requirements.

[0093] It should be noted that the data acquisition component 60 and the fluid flow meter 001 can be connected by wire or wirelessly, thereby realizing signal connection between the data acquisition component 60 and the fluid flow meter 001, and then the data acquisition component 60 can collect information from the fluid flow meter 001.

[0094] In addition, in some embodiments, the control component 10 is connected to the excitation generating component 20 and the measuring component 50 by wires, or the control component 10 is connected to the excitation generating component 20 and the measuring component 50 by wireless.

[0095] It should be noted that in the embodiment of the present application, the control component 10 is respectively connected to the excitation generating component 20 and the measuring component 50 by wire, so that the control component 10 can respectively communicate with the excitation generating component 20 and the measuring component 50 by wire, and the wired communication includes but is not limited to Ethernet, RS-232, RS-485, M-Bus, HPLC, and I2C. The control component 10 is respectively connected to the excitation generating component 20 and the measuring component 50 by wireless, so that the control component 10 can respectively communicate with the excitation generating component 20 and the measuring component 50 by wireless, and the wireless communication includes but is not limited to NearLink, HRF, WIFI, and Zigbee.

[0096] In addition, in an embodiment of the present application, when the measuring component 50 includes at least one of a high-precision measuring component 51, a simple measuring component 52, and a weighing measuring component 53, the diverter valve 512, the first pressure gauge 513, the first thermometer 514, and the first flow meter 515 in the high-precision measuring component 51 are all connected to the control component 10 by wire or wirelessly, the second thermometer 521, the second pressure gauge 522, the visual flow meter 523, and the outflow valve 524 in the simple measuring component 52 are all connected to the control component 10 by wire or wirelessly, and the discharge valve 533 in the weighing measuring component 53 is connected to the control component 10 by wire or wirelessly.

[0097] In addition, in the embodiment of the present application, the control component 10 may include at least one of a central controller 11 and a programmable logic controller 12. For example, the control component 10 may include only the central controller 11. For another example, the control component 10 may include the central controller 11 and the programmable logic controller 12, and the programmable logic controller 12 is electrically connected to the central controller 11.

[0098] In an embodiment of the present application, the fluid straight pipe section on the meter clamp 31 is docked with the fluid straight pipe section on the string meter module 32, and the fluid straight pipe section on the string meter module 32 can be docked with the measuring tube of the fluid flow meter 001. The meter clamp 31 is connected to the output end of the fluid supply component 40, or the meter clamp 31 is arranged between a string meter module 32 and the measuring component 50, and the meter clamp 31 is connected to the input end of the measuring component 50. Therefore, the string meter module 32 can be connected in series and clamped to fix the fluid flow meter 001, and the meter clamp 31 is used to push the string meter module 32 connected to it, so that the string meter module 32 and the fluid flow meter 001 connected in series with the string meter module 32 are tightly connected to form a closed cavity pipeline for fluid flow required for measurement, so that the fluid supply component 40 can allow the fluid to flow into the fluid straight pipe section on the meter clamp 31, and then the fluid can flow through the fluid straight pipe sections of each string meter module 32 and the fluid flow meter 001 clamped by each string meter module 32. Furthermore, during the process of fluid flowing through the fluid flow meter 001, an excitation signal can be output to each fluid flow meter 001 via the excitation generating assembly 20. At this time, the fluid flow meter 001 and the measuring assembly 50 measure and compare the inflowing fluid to determine whether the various performance characteristics of the fluid flow meter 001 meet the specifications. The excitation signal includes at least one of a power supply with adjustable characteristics and an ultrasonic wave with adjustable characteristics. Therefore, when the excitation signal is sent to the fluid flow meter 001, the adjustable characteristics of the power supply and / or the adjustable characteristics of the ultrasonic wave can be adjusted, so that the power supply with adjustable characteristics and / or the ultrasonic wave with adjustable characteristics received by the fluid flow meter 001 can be adjusted. Then, by adjusting the excitation signal, various related tests can be performed on the fluid flow meter 001. That is, in the embodiment of the present application, by providing the excitation generating assembly 20, the excitation generating assembly 20 outputs the power supply with adjustable characteristics and / or the ultrasonic wave with adjustable characteristics to the fluid flow meter 001, so that the power supply or the ultrasonic wave received by the fluid flow meter 001 changes, thereby enabling various tests to be performed on the fluid flow meter 001.

[0099] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0100] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A fluid flow meter testing system, characterized in that: The fluid flow meter test system includes: a control component, an excitation generating component, a measuring fixture component, a fluid supply component and a measuring component; The fluid supply assembly is connected to the measuring fixture assembly, and the measuring fixture assembly includes a meter clamp and at least one meter string module. The meter clamp is embedded with a fluid straight pipe section, and each of the meter string modules is embedded with a fluid straight pipe section. The meter string modules are used to connect in series and clamp a fixed fluid flow meter. The fluid straight pipe section on the meter clamp is docked with the fluid straight pipe section on the meter string module, and the fluid straight pipe section on the meter string module can be docked with the measuring tube of the fluid flow meter. The meter clamp is connected to the output end of the fluid supply assembly, or the meter clamp is arranged between one of the meter string modules and the measuring assembly, and the meter clamp is connected to the input end of the measuring assembly. The meter clamp is used to push the meter string module connected thereto so that the meter string modules and the fluid flow meters connected in series to each meter string module are tightly connected to form a closed cavity pipeline for fluid flow required for measurement. The fluid supply assembly is used to supply fluid to the fluid flow meter, and the measuring assembly is used to receive and measure the fluid flowing out of the fluid flow meter, thereby measuring and comparing the fluid flow meter. The excitation generating component is connected to the control component, and is used to output an excitation signal to the fluid flow meter. The excitation signal includes at least one of a power supply with adjustable characteristics and an ultrasonic wave with adjustable characteristics.

2. The fluid flow meter testing system according to claim 1, characterized in that: The excitation generating component includes a programmable power supply, which is connected to the control component and is used to connect to a fluid flow meter and deliver power with adjustable characteristics to the fluid flow meter; The adjustable characteristics of the power supply with adjustable characteristics include at least one of the amplitude of the power supply voltage, the amplitude of the power supply wave, and the type of the power supply wave.

3. The fluid flow meter testing system according to claim 2, characterized in that: The programmable power supply is connected to a power adapter, and the power adapter is used to connect to a fluid flow meter so that the programmable power supply transmits power with adjustable characteristics to the fluid flow meter through the power adapter.

4. The fluid flow meter testing system according to claim 3, characterized in that: The programmable power supply is arranged on the power adapter.

5. The fluid flow meter testing system according to claim 1, characterized in that: The excitation generating component includes a signal generating component and a transducing adapting component; The signal generating component is connected to the control component, the signal generating component is electrically connected to the transducer adapter component, the transducer adapter component is connected between the string meter module and the fluid flow meter being measured, or the transducer adapter component is arranged in the string meter module, the transducer adapter component can be in contact with the fluid in the cavity pipeline, and the transducer adapter component is used to generate and send ultrasonic waves to the corresponding fluid flow meter when receiving a driving signal, or, when receiving an ultrasonic signal transmitted by the fluid, generate and send an ultrasonic response voltage wave.

6. The fluid flow meter testing system according to claim 5, characterized in that: The excitation generating component also includes a peak detector component, which is connected to the control component and electrically connected to the transducer adapter component. The peak detector component is used to measure the amplitude of the ultrasonic response voltage wave generated by the transducer adapter component and send the measurement result to the control component so that the control component can analyze, control and display it.

7. The fluid flow meter testing system according to claim 5, characterized in that: The signal generating component is arranged on the energy conversion adapter component.

8. The fluid flow meter testing system according to claim 5, characterized in that: The energy conversion adapter assembly includes a first energy conversion adapter and a second energy conversion adapter. The meter-connection module includes a first clamp and a second clamp. The first clamp and the second clamp are distributed at both ends of the meter-connection module. The first clamp and the second clamp are both connected to the fluid straight pipe section. The first energy conversion adapter is connected to the fluid straight pipe section at one side of the first clamp, and the second energy conversion adapter is connected to the fluid straight pipe section at one side of the second clamp; The first transducer adapter and the second transducer adapter are both electrically connected to the signal generating component, and the signal generating component is connected to the control component. One of the first transducer adapter and the second transducer adapter is used to generate and send ultrasonic waves to the fluid in the cavity pipeline when receiving the driving signal sent by the signal generating component. The ultrasonic waves are transmitted to the fluid flow meter under test through the fluid. The other of the first transducer adapter and the second transducer adapter is used to generate and send ultrasonic response voltage waves when receiving the ultrasonic signal transmitted by the fluid.

9. The fluid flow meter testing system according to claim 1, characterized in that: The excitation generation component includes a programmable power supply, a signal generation component and a transduction adapter component; The programmable power supply is connected to the control component, and the programmable power supply is used to deliver power with adjustable characteristics to the fluid flow meter; The signal generating component is electrically connected to the transducer adapter component, and the transducer adapter component is connected between the string meter module and the fluid flow meter under test, or the transducer adapter component is arranged in the string meter module. The transducer adapter component is used to generate and send ultrasonic waves to the corresponding fluid flow meter when receiving the driving signal generated by the signal generating component, or, when receiving the ultrasonic wave transmitted by the fluid, generate and send an ultrasonic response voltage wave.

10. The fluid flow meter testing system according to claim 1, characterized in that: The fluid supply assembly includes a fluid box, a drive pump, a pressure-surge tank, and a flow supply valve; The fluid box stores fluid, the pressure stabilizing tank is connected to the fluid box via the driving pump, the flow supply valve is connected to the pressure stabilizing tank, the flow supply valve is used to connect the fluid straight pipe section and the fluid flow meter, the driving pump is used to transfer the fluid in the fluid box to the pressure stabilizing tank, the pressure stabilizing tank is used to stabilize the pressure of the fluid, and the flow supply valve can be switched between an open state and a closed state; When the flow supply valve is in the open state, the fluid in the pressure stabilizing tank can be transmitted to the fluid straight pipe section and the fluid flow meter through the flow supply valve; when the flow supply valve is in the closed state, the fluid in the pressure stabilizing tank is interrupted from being transmitted to the fluid straight pipe section and the fluid flow meter.

11. The fluid flow meter testing system according to claim 1, characterized in that: The measuring component includes a high-precision measuring component; The high-precision measurement assembly includes a shunt pipe, multiple shunt valves, multiple first pressure gauges, multiple first temperature gauges, multiple first flow meters, and a manifold; one of the shunt valves, one of the first pressure gauges, one of the first temperature gauges, and one of the first flow meters are sequentially connected to form a measurement branch, the first end of each of the measurement branches is connected to the shunt pipe, and the second end of each of the measurement branches is connected to the manifold, and the shunt pipe is used to connect the fluid straight pipe section so that the fluid flowing through the fluid flow meter and the fluid straight pipe section flows into the shunt pipe; The fluid flowing out of the manifold can flow into the fluid supply assembly so that the fluid can be circulated.

12. The fluid flow meter testing system according to claim 1, wherein: The measuring component includes a simple measuring component; The simple measurement assembly includes a second temperature gauge, a second pressure gauge, a visual flow meter, and an outflow valve. The visual flow meter is connected to the fluid straight pipe section of the string meter module, so that the fluid flowing through the fluid flow meter flows through the fluid straight pipe section and then flows through the visual flow meter. The second temperature gauge and the second pressure gauge are both connected to the connecting pipe between the visual flow meter and the fluid straight pipe section. The outflow valve is connected to the visual flow meter, and the outflow valve switches between an open state and a closed state. When the outflow valve is in an open state, the fluid flowing out of the outflow valve can flow into the fluid supply assembly, so that the fluid is circulated.

13. The fluid flow meter testing system according to claim 1, characterized in that: The measuring component includes a weighing and measuring component; The weighing and measuring assembly includes a container, a weighing member, and a discharge valve. The container is arranged on the weighing member. The fluid flowing out of the straight fluid pipe section on the serial meter module can flow into the container. The weighing member is used to weigh the container. The discharge valve is connected to the container. The discharge valve switches between an open state and a closed state. The output end of the discharge valve faces the fluid supply assembly to inject the fluid flowing through the discharge valve into the fluid supply assembly. When the drain valve is in an open state, the fluid flowing out of the drain valve can flow into the fluid supply assembly, so that the fluid is circulated.

14. The fluid flow meter testing system according to claim 13, characterized in that: The fluid flow meter testing system further includes a condensation element; The condensation piece is arranged at the fluid inlet of the weighing and measuring component. The fluid flowing through the series meter module and the fluid flow meter flows into the condensation piece. The condensed fluid flowing out of the condensation piece can flow into the containing piece so that the weighing and measuring component can weigh the inflowing fluid.

15. The fluid flow meter testing system according to any one of claims 1 to 14, characterized in that: The fluid flow meter testing system also includes a constant temperature control component; The constant temperature control component is connected to the fluid supply component, the series meter module, and the fluid straight pipe section, and the constant temperature control component is used to control and adjust the fluid temperature.

16. The fluid flow meter testing system according to any one of claims 1 to 14, characterized in that: The fluid flow meter testing system further includes a data acquisition component, the data acquisition component being configured to be signal-connected to the fluid flow meter so as to enable the data acquisition component to acquire information from the fluid flow meter; The control components are connected to the data acquisition components by wires, or the control components are connected to the data acquisition components wirelessly.

17. The fluid flow meter testing system according to any one of claims 1 to 14, characterized in that: The control component is connected to the excitation generating component and the measuring component by wires, or the control component is connected to the excitation generating component and the measuring component by wireless.

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