CN220819157U - Flowmeter detecting device - Google Patents

Abstract

The application relates to the technical field of flowmeters, in particular to a flowmeter detection device, which comprises a liquid storage tank, a collecting tank, a first test pipeline, a first flowmeter and a first reducer pipe, wherein the bottom of the liquid storage tank is communicated with one end of the first test pipeline, the bottom of the collecting tank is communicated with the other end of the first test pipeline, the mounting positions of the liquid storage tank and one end of the first test pipeline are higher than the mounting positions of the collecting tank and the other end of the first test pipeline, two ends of the first reducer pipe are respectively detachably connected with the first test pipeline and the first flowmeter, the first reducer pipe is detachably connected with the first test pipeline, when different types and sizes of flowmeters need to be detected, the corresponding first reducer pipe is selected for mounting, and then the flowmeter to be detected is connected with the first reducer pipe, so that effective checking and detection of the flowmeters of different types and sizes are realized.

Description

Flowmeter detecting device

Technical Field

The application relates to the technical field of flowmeters, in particular to a flowmeter detection device.

Background

The types of commonly used flowmeters include mass flowmeters, electromagnetic flowmeters, vortex shedding flowmeters and the like, and in the maintenance process of the flowmeters, the accuracy of the flowmeter measurement needs to be checked and evaluated, so that a set of flowmeter detection devices are needed to compare, check and evaluate the accuracy of the flowmeter.

At present, the variety of flowmeter detection devices is various, but a general device is lacking, so that the flowmeter detection device can effectively check and detect flowmeters of different types and sizes.

Disclosure of utility model

The application mainly solves the technical problem of providing a flowmeter detection device for effectively checking flowmeters of different types and sizes.

In order to solve the technical problems, the application adopts a technical scheme that:

The application provides a flowmeter detection device which comprises a liquid storage tank, a collecting tank, a first test pipeline, a first flowmeter and a first reducer pipe, wherein the liquid storage tank is used for storing liquid, the bottom of the liquid storage tank is communicated with one end of the first test pipeline, the collecting tank is used for collecting liquid discharged by the liquid storage tank, the bottom of the collecting tank is communicated with the other end of the first test pipeline, the installation position of the liquid storage tank and one end of the first test pipeline is higher than the installation position of the collecting tank and the other end of the first test pipeline, two ends of the first reducer pipe are detachably connected with the first test pipeline and the first flowmeter respectively, and the radial size of one end of the first reducer pipe connected with the first test pipeline is smaller than that of one end of the first reducer pipe connected with the first flowmeter.

Optionally, the flowmeter detecting device further comprises a second test pipeline, a second flowmeter and a second reducer pipe, two ends of the second test pipeline are respectively communicated with the liquid storage tank and the collecting tank, the installation positions of the second test pipeline, the liquid storage tank and the collecting tank are located on the same horizontal plane, two ends of the second reducer pipe are respectively detachably connected with the second test pipeline and the second flowmeter, and the radial size of one end, connected with the second test pipeline, of the second reducer pipe is smaller than that of one end, connected with the second flowmeter, of the second reducer pipe.

Optionally, the length of the straight pipe section of the first reducer pipe at the upstream section of the first flowmeter is greater than 1000mm, the length of the straight pipe section of the first reducer pipe at the downstream section of the first flowmeter is greater than 500mm, the length of the straight pipe section of the second reducer pipe at the upstream section of the second flowmeter is greater than 1000mm, and the length of the straight pipe section of the second reducer pipe at the downstream section of the second flowmeter is greater than 500mm.

Optionally, the flow meter detection device further includes a first adjusting valve and a second adjusting valve, the first adjusting valve is disposed at one end of the first test pipeline close to the liquid storage tank, the second adjusting valve is disposed at one end of the second test pipeline close to the liquid storage tank, and the first adjusting valve and the second adjusting valve are used for controlling the discharge of the liquid in the liquid storage tank.

Optionally, the flowmeter detecting device further includes a first switch valve and a second switch valve, the first switch valve is disposed at one end of the first test pipeline close to the collecting tank, the second switch valve is disposed at one end of the second test pipeline close to the collecting tank, the first switch valve is used for controlling on-off of the first test pipeline, and the second switch valve is used for controlling on-off of the second test pipeline.

Optionally, the flowmeter detecting device further comprises a circulating pipeline and a liquid circulating pump, wherein two ends of the circulating pipeline are respectively communicated with the liquid storage tank and the collecting tank, the liquid circulating pump is installed in the circulating pipeline, and the liquid circulating pump is used for providing power for liquid flowing back from the collecting tank to the liquid storage tank.

Optionally, the flowmeter detecting device further comprises a first liquid level transmitter and a second liquid level transmitter, the first liquid level transmitter is arranged at the bottom of the liquid storage tank, the first liquid level transmitter is interlocked with the liquid circulating pump, when the liquid level of the liquid storage tank is higher than 80%, the first liquid level transmitter is used for controlling the liquid circulating pump to stop, the second liquid level transmitter is arranged at the bottom of the collecting tank, the second liquid level transmitter is interlocked with the liquid circulating pump, when the liquid level of the collecting tank is higher than 80%, the first liquid level transmitter is used for controlling the liquid circulating pump to start, and when the liquid level of the collecting tank is lower than 40%, the second liquid level transmitter is used for controlling the liquid circulating pump to stop.

Optionally, the flow meter detection device further includes a controller, the controller is electrically connected to the first liquid level transmitter, the second liquid level transmitter and the liquid circulation pump, and the controller is configured to receive liquid level information of the first liquid level transmitter and the second liquid level transmitter, and send a signal to the liquid circulation pump to achieve liquid level interlocking.

Optionally, the flowmeter detecting device further comprises a glass sight glass, the glass sight glass is arranged on the side face of the collecting tank, a scale is carved on the glass sight glass, and the glass sight glass is used for reading the liquid level of the collecting tank.

Optionally, the flow meter detection device further includes a first discharge valve and a second discharge valve, the first discharge valve is disposed at the bottom of the liquid storage tank, the first discharge valve is used for evacuating liquid inside the liquid storage tank, the second discharge valve is disposed at the bottom of the collection tank, and the second discharge valve is used for evacuating liquid inside the collection tank.

The beneficial effects of the application are as follows: the flowmeter detection device comprises a liquid storage tank, a collecting tank, a first test pipeline, a first flowmeter and a first reducer pipe, wherein the bottom of the liquid storage tank is communicated with one end of the first test pipeline, the bottom of the collecting tank is communicated with the other end of the first test pipeline, the mounting position of one end of the liquid storage tank and one end of the first test pipeline is higher than that of the other end of the collecting tank and the other end of the first test pipeline, the two ends of the first reducer pipe are respectively detachably connected with the first test pipeline and the first flowmeter, the radial size of one end of the first reducer pipe, which is connected with the first test pipeline, is smaller than that of one end of the first reducer pipe, which is connected with the first flowmeter, the first reducer pipe and the first test pipeline are detachably connected, when the flow timing of different types and sizes is needed to be detected, the corresponding first reducer pipe is selected to be mounted, and the flowmeter to be detected is then connected with the first reducer pipe, so that the effective checking and detection of the flowmeters of different types and sizes are realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of a flow meter testing device according to the present application;

FIG. 2 is a schematic view of the structure of the first reducer pipe provided by the application;

FIG. 3 is a schematic block diagram of a controller provided by the present application;

FIG. 4 is a schematic view of another embodiment of a flow meter testing device according to the present application;

fig. 5 is a schematic structural view of a second reducer pipe according to the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Furthermore, the terms "comprise," "have," and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In order to effectively check and detect different types and sizes of flowmeters, the application provides a universal flowmeter detection device which can adapt to various types of flowmeters, including mass flowmeters, electromagnetic flowmeters and the like, is simultaneously suitable for different pipe diameter sizes, including flowmeters with the diameters of 1 inch, 2 inches and 3 inches, has various detection modes of manual detection, timing detection, constant flow detection and the like, is flexible to use, can realize various detection modes, and is described in the following by means of specific embodiments.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an embodiment of a flow meter detecting device provided by the present application, and fig. 2 is a schematic structural diagram of a first reducer pipe provided by the present application.

As shown in fig. 1, the present embodiment provides a flow meter detecting device 100, the flow meter detecting device 100 includes a liquid storage tank 10, a collecting tank 20, a first test pipe 30, a first flow meter 32, a first reducing pipe 34, the liquid storage tank 10 for storing liquid, a bottom of the liquid storage tank 10 communicating with one end of the first test pipe 30, a collecting tank 20 for collecting liquid discharged from the liquid storage tank 10, a bottom of the collecting tank 20 communicating with the other end of the first test pipe 30, a mounting position of the liquid storage tank 10 being higher than a mounting position of the collecting tank 20, and a mounting position of the liquid storage tank 10 with one end of the first test pipe 30 being higher than a mounting position of the collecting tank 20 with the other end of the first test pipe 30, so that liquid in the liquid storage tank 10 can flow from the liquid storage tank 10 to the collecting tank 20 under the effect of gravity, a section of first reducer pipe 34 is arranged in the middle section of the first test pipeline 30, two ends of the first reducer pipe 34 are respectively detachably connected with the first test pipeline 30 and the first flowmeter 32, in the embodiment, different numbers of the first reducer pipes 34 are prefabricated according to the types and the sizes of the flowmeters to be tested, when the flowmeters of different types and sizes need to be detected, the corresponding first reducer pipes 34 are selected for installation, the flowmeters to be tested are connected with the first reducer pipes 34, the flowmeters to be tested are connected into the first test pipeline 30, so that the check and the detection of the flowmeters of different types and sizes are realized, in order to facilitate the detachable connection of the first reducer pipes 34, in the embodiment, the first reducer pipes 34 are in flange connection with the first test pipeline 30 and the first flowmeter 32, as shown in figure 2, the radial dimension of one end of the first reducer pipe 34 connected with the first test pipeline 30 is smaller than the radial dimension of one end of the first reducer pipe 34 connected with the first flowmeter 32, one end of the first reducer pipe 34 connected with the first test pipeline 30 is connected through a flange, the radial dimension of the joint of the first reducer pipe 34 and the first test pipeline 30 is matched, the radial dimension of the other end of the first reducer pipe 34 is matched with the radial dimension of the flowmeter to be tested, and when different flowmeters to be tested need to be detected, the corresponding first reducer pipe 34 is replaced for installation, so that the flowmeter detection device 100 can check and detect different types and sizes of flowmeters.

As shown in fig. 2, the radial dimension of the first reducer pipe 34 is gradually increased from the end connected with the first detection pipeline, the radial dimension of the first reducer pipe 34 is increased to a straight pipe section after the first reducer pipe 34 can be connected with the first flowmeter 32, the length of the straight pipe section of the first reducer pipe 34 at the upstream section of the first flowmeter 32 is greater than 1000mm, and the length of the straight pipe section of the first reducer pipe 34 at the downstream section of the first flowmeter 32 is greater than 500mm, so as to meet the requirement of the first flowmeter 32 on flow detection.

As shown in fig. 1, in this embodiment, the flow meter detecting device 100 further includes a first adjusting valve 36 and a first switch valve 38, where the first adjusting valve 36 is disposed at an end of the first test pipeline 30 near the liquid storage tank 10, the first adjusting valve 36 is used for controlling the discharge of the liquid in the liquid storage tank 10, the first switch valve 38 is disposed at an end of the first test pipeline 30 near the collection tank 20, and the first switch valve 38 is used for controlling the on-off of the first test pipeline 30.

In this embodiment, the flow meter detecting device 100 further includes a circulation pipe 50 and a liquid circulation pump 60, two ends of the circulation pipe 50 are respectively connected to the liquid storage tank 10 and the collection tank 20, the liquid circulation pump 60 is installed in the circulation pipe 50, the liquid circulation pump 60 is used for providing power for liquid flowing back from the collection tank 20 to the liquid storage tank 10, the circulation pipe 50 and the liquid circulation pump 60 are arranged to enable the liquid to be recycled, resource waste is reduced, enough liquid can be guaranteed to be stored in the liquid storage tank 10, liquid flowing in the flow detection process is guaranteed all the time, and detection accuracy is improved.

The flowmeter detecting device 100 further comprises a first liquid level transmitter 12 and a second liquid level transmitter 22, wherein the first liquid level transmitter 12 is arranged at the bottom of the liquid storage tank 10, the installation position of the first liquid level transmitter 12 is not located at the pipe opening of the first test pipeline 30, the influence of the rapid flow of liquid on the detection result of the first liquid level transmitter 12 is avoided, the first liquid level transmitter 12 is interlocked with the liquid circulating pump 60, when the liquid level of the liquid storage tank 10 is higher than 80%, the first liquid level transmitter 12 controls the liquid circulating pump 60 to stop, the second liquid level transmitter 22 is arranged at the bottom of the collecting tank 20, the installation position of the second liquid level transmitter 22 is not located at the pipe opening of the first test pipeline 30, the influence of the rapid flow of liquid on the detection result of the first liquid level transmitter 12 is avoided, the second liquid level transmitter 22 is interlocked with the liquid circulating pump 60, when the liquid level of the collecting tank 20 is higher than 80%, the first liquid level transmitter 12 controls the liquid circulating pump 60 to start, and when the liquid level of the collecting tank 20 is lower than 40%.

Specifically, referring to fig. 3, fig. 3 is a schematic block diagram of a controller provided by the present application, the flow meter detecting device 100 further includes a controller 70, the controller 70 is electrically connected to the first liquid level transmitter 12, the second liquid level transmitter 22 and the liquid circulation pump 60, the controller 70 is configured to receive the liquid level information of the first liquid level transmitter 12 and the second liquid level transmitter 22, and send a signal to the liquid circulation pump 60 to implement the liquid level interlocking, when the liquid level of the liquid storage tank 10 is higher than 80%, the controller 70 receives the liquid level information of the first liquid level transmitter 12, and the controller 70 controls the liquid circulation pump 60 to stop. When the liquid level of the collection tank 20 is higher than 80%, the controller 70 receives the liquid level information of the second liquid level transmitter 22, the controller 70 controls the liquid circulation pump 60 to start, when the liquid level of the collection tank 20 is lower than 40%, the second liquid level transmitter 22 sends the liquid level information to the controller 70, and the controller 70 controls the liquid circulation pump 60 to stop, so that the liquid can be circulated between the liquid storage tank 10 and the collection tank 20.

In this embodiment, the flow meter detecting device 100 further includes a glass sight glass 80, the glass sight glass 80 is disposed on a side surface of the collection tank 20, a scale is carved on the glass sight glass 80, the glass sight glass 80 is used for reading the liquid level height of the collection tank 20, and the glass sight glass 80 with the scale is installed on the side surface of the collection tank, so that the liquid level information in the collection tank 20 can be observed conveniently.

The flow meter detecting device 100 further includes a first discharge valve 14 and a second discharge valve 24, the first discharge valve 14 is disposed at the bottom of the liquid storage tank 10, the first discharge valve 14 is used for emptying the liquid in the liquid storage tank 10, the second discharge valve 24 is disposed at the bottom of the collection tank 20, the second discharge valve 24 is used for emptying the liquid in the collection tank 20, and the first discharge valve 14 and the second discharge valve 24 are provided to enable emptying the liquid in the liquid storage tank 10 and the collection tank 20 when necessary, for example, when maintenance and cleaning of the liquid storage tank 10 and the collection tank 20 are required.

Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of another embodiment of a flow meter detecting device provided by the present application, and fig. 5 is a schematic structural diagram of a second reducer pipe provided by the present application.

In this embodiment, the same parts as those of the previous embodiment are referred to in the previous embodiment, and the following description will be made on the different parts.

In this embodiment, the flow meter detecting device 100 further includes a second test pipe 40, a second flowmeter 42, and a second reducer 44, two ends of the second test pipe 40 are respectively connected to the liquid storage tank 10 and the collection tank 20, the installation positions of the second test pipe 40 and the liquid storage tank 10, and the collection tank 20 are located at the same level as the installation positions of the first test pipe 30 and the liquid storage tank 10, and the collection tank 20, one ends of the first test pipe 30 and the second test pipe 40 are installed at the same height at the bottom of the liquid storage tank 10, the other ends of the first test pipe 30 and the second test pipe 40 are installed at the same height at the bottom of the collection tank 20, so as to ensure that the water pressures of the first test pipe 30 and the second test pipe 40 are the same, reduce the variables affecting the detection results, and the materials and radial dimensions of the first test pipe 30 and the second test pipe 40 are kept consistent, a section of second reducer pipe 44 is arranged at the same section of the second test pipeline 40, two ends of the second reducer pipe 44 are respectively detachably connected with the second test pipeline 40 and the second flowmeter 42, in the embodiment, different numbers of second reducer pipes 44 are prefabricated according to the types and the sizes of the flowmeters to be tested, when the flowmeters of different types and sizes need to be detected, the corresponding second reducer pipes 44 are selected for installation, the flowmeters to be tested are connected with the second reducer pipes 44, the flowmeters to be tested are connected into the second test pipeline 40, so that the check and the detection of the flowmeters of different types and sizes are realized, in order to facilitate the detachable connection of the second reducer pipes 44, in the embodiment, the second reducer pipes 44 are in flange connection with the second test pipeline 40 and the second flowmeter 42, as shown in figure 5, the radial dimension of one end of the second reducer pipe 44 connected with the second test pipeline 40 is smaller than the radial dimension of one end of the second reducer pipe 44 connected with the second flowmeter 42, one end of the second reducer pipe 44 connected with the second test pipeline 40 is connected through a flange, the radial dimension of the joint of the second reducer pipe 44 and the second test pipeline 40 is matched, the radial dimension of the other end of the second reducer pipe 44 is matched with the radial dimension of the flowmeter to be tested, and when different flowmeters to be tested need to be detected, the corresponding second reducer pipe 44 is replaced for installation, so that the flowmeter detection device 100 can check and detect different types and sizes of flowmeters.

As shown in fig. 5, the radial dimension of the second reducer 44 is gradually increased from the end connected to the second detection pipe, the radial dimension of the second reducer 44 is increased to a straight pipe section after the second reducer is connected to the second flowmeter 42, the length of the straight pipe section of the second reducer 44 at the upstream section of the second flowmeter 42 is greater than 1000mm, and the length of the straight pipe section of the second reducer 44 at the downstream section of the second flowmeter 42 is greater than 500mm, so as to meet the requirement of the second flowmeter 42 for flow detection.

In this embodiment, the flow meter detecting device 100 further includes a second adjusting valve 46 and a second switch valve 48, the second adjusting valve 46 is disposed at an end of the second test pipeline 40 near the liquid storage tank 10, the second adjusting valve 46 is used for controlling the discharge of the liquid in the liquid storage tank 10, the second switch valve 48 is disposed at an end of the second test pipeline 40 near the collection tank 20, and the second switch valve 48 is used for controlling the on-off of the second test pipeline 40.

Further, in this embodiment, the controller 70 may be further electrically connected to the first adjusting valve 36, the second adjusting valve 46, the first switching valve 38, and the second switching valve 48, and the adjustment of all the valves is achieved through the controller 70, so that the operation is convenient.

In other alternative embodiments, more than three test pipes may be provided in the flow meter detecting device 100, so as to detect multiple flow meters at the same time, for example, a third test pipe, a fourth test pipe, etc.

The present application is mainly described above in terms of structure, and a specific detection mode of the present application is described below.

According to an embodiment of the present application, a flow meter detecting device 100 is provided, which may include a case where one test pipe detects one flow meter, or may include a case where two test pipes detect two flow meters in a contrasting manner, where in the case of two test pipes, two flow meters may be a standard flow meter, a flow meter to be detected, and the accuracy of the flow meter to be detected may be determined by comparing the detected value of the standard flow meter with the detected value of the flow meter to be detected, or may be two flow meters to be detected, and may also be two standard flow meters to be compared and detected, and a more accurate standard flow meter may be selected.

In the use process of the flowmeter detecting device 100, according to the type and the size of the flowmeter to be detected, the corresponding first reducer pipe 34 and second reducer pipe 44 are selected, the first flowmeter 32 and the second flowmeter 42 are installed on the first test pipeline 30 and the second test pipeline 40 through the first reducer pipe 34 and the second reducer pipe 44, then the first switch valve 38 and the second switch valve 48 are closed, the first regulating valve 36 and the second regulating valve 46 are slowly opened, after the first test pipeline 30 and the second test pipeline 40 are filled with liquid and stable, the first flowmeter 32 and the second flowmeter 42 are cleared, and then the subsequent flow detection can be carried out.

The manual detection mode comprises the following steps: in this way, all valves are opened and closed manually by an operator.

Timing detection mode: by setting a rated time, opening the switch valve, the flowmeter starts to measure the instantaneous flow and the accumulated flow, and the switch valve is automatically closed after the time is up, so that the detection result of the flowmeter is compared.

The timing detection can be applied to the case of no standard flowmeter, a rated time is set, the first switch valve 38 is opened, the first flowmeter 32 starts to measure, after the time is up, the first switch valve 38 is automatically closed, and the difference between the liquid level change amount in the collecting tank and the measured value of the first flowmeter 32 is observed through the glass mirror 80, so that the accuracy of the first flowmeter 32 is evaluated.

Constant flow rate detection mode: by setting the rated flow, after the flowmeter passes through the liquid with the corresponding rated flow, the switch valve is closed, and the detection result of the flowmeter is compared.

The constant flow rate detection mode can be suitable for the condition of one standard flowmeter, the rated flow rate of the standard flowmeter is set, the first switch valve 38 and the second switch valve 48 are simultaneously opened, and the two flowmeters are simultaneously closed after the set rated flow rate is reached, and the measured values of the two flowmeters are observed to judge the accuracy of the flowmeter to be detected.

The flowmeter detecting device 100 provided by the application can adapt to flowmeters of various types and sizes, has various detecting modes such as manual detection, timing detection and constant flow detection, can realize various checking modes, is flexible to use, can accurately measure the flow in a pipeline, realizes the comparison of a flowmeter to be detected and a standard flowmeter, can detect the flowmeter to be detected under the condition of lacking the standard flowmeter, is greatly convenient for operators, and is beneficial to production.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.

Claims (10)

1. The flowmeter detecting device is characterized by comprising a liquid storage tank, a collecting tank, a first test pipeline, a first flowmeter and a first reducer pipe;

the liquid storage tank is used for storing liquid, the bottom of the liquid storage tank is communicated with one end of the first test pipeline, the collecting tank is used for collecting liquid discharged by the liquid storage tank, the bottom of the collecting tank is communicated with the other end of the first test pipeline, and the installation position of the liquid storage tank and one end of the first test pipeline is higher than the installation position of the collecting tank and the other end of the first test pipeline;

The two ends of the first reducer pipe are detachably connected with the first test pipeline and the first flowmeter respectively, and the radial dimension of one end, connected with the first test pipeline, of the first reducer pipe is smaller than that of one end, connected with the first flowmeter, of the first reducer pipe.

2. The flow meter testing device of claim 1, further comprising a second test tube, a second flow meter, a second reducer;

The two ends of the second test pipeline are respectively communicated with the liquid storage tank and the collecting tank, and the installation positions of the second test pipeline, the liquid storage tank and the collecting tank are positioned on the same horizontal plane with the installation positions of the first test pipeline, the liquid storage tank and the collecting tank;

And the two ends of the second reducer pipe are detachably connected with the second test pipeline and the second flowmeter respectively, and the radial dimension of one end of the second reducer pipe connected with the second test pipeline is smaller than that of one end of the second reducer pipe connected with the second flowmeter.

3. The flow meter sensing device of claim 2, wherein the first reducer pipe has a straight pipe section length of greater than 1000mm at an upstream section of the first flow meter and a straight pipe section length of greater than 500mm at a downstream section of the first flow meter;

The length of the straight pipe section of the second reducer pipe at the upstream section of the second flowmeter is larger than 1000mm, and the length of the straight pipe section of the second reducer pipe at the downstream section of the second flowmeter is larger than 500mm.

4. The flow meter testing device of claim 2, further comprising a first regulator valve and a second regulator valve, wherein the first regulator valve is disposed at an end of the first test conduit adjacent to the fluid reservoir, the second regulator valve is disposed at an end of the second test conduit adjacent to the fluid reservoir, and the first regulator valve and the second regulator valve are configured to control the discharge of fluid from the fluid reservoir.

5. The flow meter detection device of claim 2, further comprising a first switch valve and a second switch valve, wherein the first switch valve is disposed at an end of the first test pipeline near the collection tank, the second switch valve is disposed at an end of the second test pipeline near the collection tank, the first switch valve is used for controlling on-off of the first test pipeline, and the second switch valve is used for controlling on-off of the second test pipeline.

6. The flow meter detection device of claim 1 further comprising a circulation conduit and a fluid circulation pump, wherein two ends of the circulation conduit are in communication with the fluid reservoir and the collection tank, respectively, and wherein the fluid circulation pump is mounted to the circulation conduit and is configured to power fluid flowing from the collection tank back to the fluid reservoir.

7. The flow meter sensing apparatus of claim 6, further comprising a first level transmitter and a second level transmitter;

the first liquid level transmitter is arranged at the bottom of the liquid storage tank, the first liquid level transmitter is interlocked with the liquid circulating pump, and when the liquid level of the liquid storage tank is higher than 80%, the first liquid level transmitter controls the liquid circulating pump to stop;

The second liquid level transmitter is arranged at the bottom of the collecting tank, the second liquid level transmitter is interlocked with the liquid circulating pump, when the liquid level of the collecting tank is higher than 80%, the first liquid level transmitter controls the liquid circulating pump to start, and when the liquid level of the collecting tank is lower than 40%, the second liquid level transmitter controls the liquid circulating pump to stop.

8. The flow meter sensing device of claim 7, further comprising a controller electrically connected to the first level transmitter, the second level transmitter, and the fluid circulation pump, the controller configured to receive fluid level information from the first level transmitter and the second level transmitter and send signals to the fluid circulation pump to effect fluid level interlocking.

9. The flow meter inspection device of claim 1 further comprising a glass sight glass disposed on a side of the collection tank, the glass sight glass having a scale engraved thereon, the glass sight glass being configured to read a liquid level of the collection tank.

10. The flow meter sensing device of claim 1, further comprising a first drain valve and a second drain valve, the first drain valve being disposed at a bottom of the fluid reservoir, the first drain valve being configured to drain fluid from within the fluid reservoir;

the second discharge valve is arranged at the bottom of the collecting tank and is used for evacuating liquid in the collecting tank.