Flow meter detection system

Abstract

The utility model provides a flowmeter detection system, this detection system includes detection liquid moving unit and flowmeter detection mobile unit, detection liquid moving unit includes first carrier and locates the upstream pipeline, container, first pump body and second pump body of first carrier, flowmeter detection mobile unit includes second carrier and locates the series connection pipeline, standard flowmeter and downstream pipeline of second carrier, first pump body and second pump body are in parallelly arranged, and both ends of two respectively are connected with container and upstream pipeline, and the series connection pipeline can be dismantled and is connected in upstream pipeline and / or standard flowmeter, and forms the installation position of detection between standard flowmeter and downstream pipeline.

Description

Technical Field

[0001] This utility model relates to the field of instrument measurement technology, and in particular to a flow meter detection system. Background Technology

[0002] The ability of flow meters to accurately detect and monitor flow is inseparable from regular testing and calibration. Flow meters are used extensively in industrial production, with a wide variety of flow specifications. However, traditional flow meter testing devices have a very limited flow detection range, making it difficult to be compatible with multiple flow specifications and unable to test and calibrate flow meters whose flow specifications exceed the flow detection range. Utility Model Content

[0003] In view of this, the present invention provides a flow meter detection system with a wide range of flow detection range and compatibility with flow meters of various flow specifications.

[0004] The flow meter detection system of this utility model includes a detection liquid moving unit and a flow meter detection moving unit. The detection liquid moving unit includes a first carrier and an upstream pipeline, a container, a first pump body, and a second pump body disposed on the first carrier. The flow meter detection moving unit includes a second carrier and a series pipeline, a standard flow meter, and a downstream pipeline disposed on the second carrier. The first pump body and the second pump body are arranged in parallel, and their respective ends are connected to the container and the upstream pipeline, respectively. The series pipeline can be detachably connected to the upstream pipeline and / or the standard flow meter, and a test installation position is formed between the standard flow meter and the downstream pipeline.

[0005] The flow meter detection system of this utility model has the following beneficial effects:

[0006] 1) It can provide a wider range of flow detection ranges and has multiple flow detection ranges, and can be compatible with flow meters of various flow specifications. When the first pump body and the second pump body are running at the same time, the sum of the rated flow of the two pump bodies, namely E and F, is the upper limit of the flow detection range of the flow meter detection system at this time; when only one of the first pump body and the second pump body is running, the rated flow of the running pump body is the upper limit of the flow detection range of the flow meter detection system at this time.

[0007] 2) The first and second pump bodies serve as backups for each other. If one of the two pump bodies fails, the failed pump body can be shut down and the other pump body can be activated, while the flow meter detection system can continue to be used.

[0008] 3) The appropriate pump body can be selected according to the flow specification and diameter of the flow meter to be tested, thereby selecting and adjusting the flow detection range. This avoids the flow meter detection system operating in a relatively large flow detection range to test flow meters with relatively small flow specifications and diameters, which helps to reduce the energy consumption of the flow meter detection system and the impact on the flow meter when it is being tested.

[0009] 4) The on-site deployment and relocation of the flow meter detection system are more convenient and faster, and the mobile unit for testing liquid and the mobile unit for flow meter detection can be transported and transferred separately.

[0010] In some embodiments, both the first pump body and the second pump body are centrifugal gear pumps; and / or,

[0011] The rated flow rate of the first pump body is 10 m³ / h, and the rated flow rate of the second pump body is 22 m³ / h; and / or,

[0012] The first pump body is a first variable frequency pump equipped with a first frequency converter, and the second pump body is a second variable frequency pump equipped with a second frequency converter.

[0013] In some embodiments, the first vehicle includes a first vehicle, the first vehicle carrying a container, a first pump body, and a second pump body; and / or,

[0014] One end of the first pump body is connected to the container via a first inlet pipe equipped with a first inlet valve, and the other end is connected to the upstream pipeline via a first outlet pipe equipped with a first outlet valve; one end of the second pump body is connected to the container via a second inlet pipe equipped with a second inlet valve, and the other end is connected to the upstream pipeline via a second outlet pipe equipped with a second outlet valve.

[0015] In some implementations, multiple standard flow meters are configured, which are connected in parallel and each has a different fluid cavity inner diameter. One end of each standard flow meter is connected to a series pipeline, and the other end forms a test installation position with the downstream pipeline.

[0016] In some embodiments, the detection liquid movement unit further includes a reflux line equipped with a reflux control valve, one end of which is connected to an upstream line and the other end is connected to a container.

[0017] In some implementations, the flow meter detection movement unit also includes a return water line, one end of which is connected to a downstream line, and the return water line extends such that the other end points into the container.

[0018] In some embodiments, the flow meter detection moving unit further includes a positioning support, the second carrier includes a second vehicle carrying a standard flow meter, the bottom end of the positioning support is fixed relative to the second vehicle, and the top end of the positioning support extends to the installation position to be inspected.

[0019] In some implementations, the flow meter testing system also includes a communication module for connecting the flow meter under test via communication wiring, the communication module including multiple different types of communication wiring ports.

[0020] In some embodiments, the series pipeline includes a first flexible hose for detachable connection with an upstream pipeline; and / or, the upstream pipeline includes a second flexible hose for detachable connection with the series pipeline.

[0021] In some embodiments, the second carrier includes a second vehicle carrying a standard flow meter. The second vehicle includes a test bench, and the standard flow meter includes a standard outlet extending to the test bench, forming a test installation position between the standard outlet and the downstream pipeline; wherein:

[0022] The flow meter detection moving unit also includes a detection fixture mounted on the test stand; and / or, the flow meter detection moving unit also includes a flange assembly mounted on the test stand. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the detection liquid movement unit of a flow meter detection system according to one embodiment of the present invention, viewed from a first perspective.

[0024] Figure 2 This is a schematic diagram of the detection liquid movement unit of a flow meter detection system according to one embodiment of the present invention, viewed from a second perspective.

[0025] Figure 3 A schematic diagram of the flow meter detection moving unit of a flow meter detection system according to one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a flow meter detection system according to one embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the detection liquid moving unit of the flow meter detection system according to one embodiment of the present invention during the operation of the first pump body.

[0028] Figure 6 This is a schematic diagram of the detection liquid moving unit of the flow meter detection system according to one embodiment of the present invention during operation of the second pump body.

[0029] Figure 7 This is a schematic diagram of the detection liquid moving unit of the flow meter detection system according to one embodiment of the present invention, when the first pump body and the second pump body are running simultaneously.

[0030] Explanation of reference numerals in the attached drawings: 10. Detection liquid moving unit; 11. First vehicle; 111. First frame; 112. First caster; 12. Upstream pipeline; 13. Container; 141. First pump body; 142. Second pump body; 151. First inlet pipe; 152. First inlet valve; 161. Second inlet pipe; 162. Second inlet valve; 171. Return pipeline; 172. Return control valve; 18. First electrical control cabinet; 191. First outlet pipe; 192. First outlet valve; 193. Second outlet pipe; 194. Second outlet valve; 195. Drain pipe; 20. Flow meter detection moving unit; 21. Second trolley; 211. Second frame; 213. Second caster; 22. Series pipeline; 231. First standard flow meter; 232. Second standard flow meter; 233. Third standard flow meter; 24. Downstream pipeline; 25. Return water pipeline; 26. Positioning support; 272. Flange assembly; 28. Second electrical control cabinet; 291. Temperature sensor; 292. Pressure sensor; 293. Flow regulating valve; 30. Flow meter under test. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] This invention provides a flow meter testing system for detecting and calibrating flow meters. (See also...) Figures 1-4 The flowmeter testing system of this utility model adopts a modular and detachable design, including two mobile units that can be independently transported, transferred, and deployed. The two mobile units are a testing liquid mobile unit 10 and a flowmeter testing mobile unit 20. The testing liquid mobile unit 10 is used to provide the fluid medium required for testing and calibrating the flowmeter, and the fluid medium can be water. The flowmeter testing mobile unit 20 is used to install the flowmeter 30 under test, detect the flow rate of the flowmeter 30 under test, and acquire flow data.

[0034] See Figures 1-2The testing fluid moving unit 10 includes a first carrier, an upstream pipeline 12, and a first pump body 141, a second pump body 142, and a container 13 carried by the first carrier. The first carrier includes a first vehicle 11, which comprises a first frame 111 composed of multiple stainless steel pipe columns and multiple first casters 112 mounted on the bottom of the first frame 111. The first pump body 141 and the second pump body 142 are fixedly mounted in the first frame 111, and the container 13 is fixedly mounted on the top of the first frame 111, storing the fluid medium required for calibrating the flow meter. The first casters 112 can be omnidirectional wheels, allowing personnel to push the first frame 111. Through the rolling contact between the first casters 112 and the ground, the first frame 111 moves the container 13 and the two pump bodies, enabling rapid transfer and on-site deployment of the testing fluid moving unit 10. This eliminates the need to send the flow meter 30 to a laboratory for testing; the flow meter 30 can be tested on-site during production. In other embodiments, the first carrier is not limited to the first vehicle 11.

[0035] See Figure 3 The flow meter testing mobile unit 20 includes a second carrier, a series pipeline 22, a downstream pipeline 24, and a standard flow meter carried by the second carrier. The second carrier includes a second vehicle 21, which comprises a second frame 211 composed of multiple stainless steel pipe columns and multiple second casters 213 mounted on the bottom of the second frame 211. The second casters 213 can be swivel casters. Personnel can push the second frame 211, and through the rolling contact between the second casters 213 and the ground, the second frame 211 moves the standard flow meter, enabling rapid transfer and on-site deployment of the flow meter testing mobile unit 20. This eliminates the need to send the flow meter 30 to a laboratory for testing; the flow meter can be tested on-site at the production site. In other embodiments, the second carrier is not limited to the second vehicle 21.

[0036] The flowmeter testing system of this utility model adopts a series connection of the flowmeter under test 30 and the standard flowmeter for testing and calibration. The first pump body 141 and the second pump body 142 are connected in parallel. The two ends of the first pump body 141 are connected to the container 13 and the upstream pipeline 12, respectively. The two ends of the second pump body 142 are connected to the container 13 and the upstream pipeline 12, respectively. The two ends of the series pipeline 22 are connected to the upstream pipeline 12 and the standard flowmeter, respectively. The standard flowmeter and the downstream pipeline 24 form a test installation position for the flowmeter under test 30 to be installed. When the flowmeter under test 30 is installed in the test installation position, the two ends of the flowmeter under test 30 are connected to the standard flowmeter and the downstream pipeline 24, respectively. The upstream pipeline 12, the series pipeline 22, the standard flowmeter, the flowmeter under test 30, and the downstream pipeline 24 are connected in series in sequence.

[0037] At least one of the upstream pipeline 12 and the standard flow meter is detachably connected to the series pipeline 22. The advantage of this detachable connection is that the series pipeline 22 and the upstream pipeline 12 can be separated first, or the series pipeline 22 and the standard flow meter can be separated first. Then, the first cart 11 and the second cart 21 can be pushed to transfer the detection liquid moving unit 10 and the flow meter detection moving unit 20 to the production site respectively. After the detection liquid moving unit 10 and the flow meter detection moving unit 20 are deployed in place on site, the upstream pipeline 12 and the series pipeline 22 can be connected, or the series pipeline 22 and the standard flow meter can be connected. Therefore, two people can push the first cart 11 and the second cart 21 respectively, making the transfer and deployment of the detection liquid moving unit 10 and the flow meter detection moving unit 20 easier, and making the transportation and unloading of the two moving units more convenient. This avoids transporting the entire flow meter detection system at the same time and prevents difficulties in transportation and unloading of the flow meter detection system due to its large size.

[0038] The fluid medium in container 13 can flow into upstream pipeline 12 through the first pump body 141, the second pump body 142, or both simultaneously. The rated flow rate of the first pump body 141 is E, and the rated flow rate of the second pump body 142 is F. Figure 5 As shown, when the first pump body 141 is running and the second pump body 142 is not running, the fluid medium in container 13 flows into the upstream pipeline 12 only through the first pump body 141 at a flow rate of E; as Figure 6 As shown, when the second pump body 142 is running and the first pump body 141 is not running, the fluid medium in container 13 flows into the upstream pipeline 12 only through the second pump body 142 at a flow rate of F; Figure 7 As shown, when the first pump body 141 and the second pump body 142 are running simultaneously, the fluid medium in the container 13 flows into the upstream pipeline 12 through the first pump body 141 and the second pump body 142 at the same time, and the fluid flow rate entering the upstream pipeline 12 is approximately equal to the sum of E and F.

[0039] In some embodiments, both the first pump body 141 and the second pump body 142 are centrifugal gear pumps. The first pump body 141 is a first variable frequency pump equipped with a first frequency converter, and the second pump body 142 is a second variable frequency pump equipped with a second frequency converter. The rated flow rate E of the first pump body 141 is 10 m³ / h, and the rated flow rate F of the second pump body 142 is 22 m³ / h. Personnel can set the frequency of the first pump body 141 using the first frequency converter, thereby changing its operating flow rate. Similarly, they can set the frequency of the second pump body 142 using the second frequency converter, thereby changing its operating flow rate. For example, if the initial frequency of the first pump body 141 is set to 25 Hz using the first frequency converter, the actual operating flow rate of the first pump body 141 is approximately 5 m³ / h. The rated flow rate E is the nominal flow rate of the first pump body 141 at a frequency of 50 Hz, and the rated flow rate F is the nominal flow rate of the second pump body 142 at a frequency of 50 Hz.

[0040] As the flow rate specification and diameter of the flow meter 30 to be calibrated increase, the liquid movement unit 10 can sequentially... Figure 5 The first pumping mode shown is where only the first pump body 141 operates. Figure 6 The second pump mode shown only involves the second pump body 142. Figure 7 The third pumping mode, in which the first pump body 141 and the second pump body 142 operate simultaneously, shows an increasing water flow rate into the series connection 22. Specifically, when the detection liquid moving unit 10 operates in the third pumping mode, the water flow rate into the series connection 22 can reach 32 m³ / h. Regarding pump power consumption, the third pumping mode consumes more power than the second pumping mode, which in turn consumes more power than the first pumping mode. In contrast, regardless of changes in the flow rate specification and diameter of the flow meter 30 under test, a single pump operates with a fixed power consumption, resulting in significant power waste when detecting small-specification, small-diameter flow meters.

[0041] With this configuration, the flow meter detection system provides multiple flow detection ranges. The flow detection range is expanded by selecting different pumping modes to choose the appropriate flow detection range for the flow meter 30 under test. The flow detection range can also be changed by adjusting the pump frequency via a frequency converter: when the flow specification and diameter of the flow meter 30 under test are relatively small, the detection liquid movement unit 10 can operate in the first pumping mode; when the flow specification and diameter of the flow meter 30 under test increase, the detection liquid movement unit 10 can operate in the second pumping mode; and when the flow specification and diameter of the flow meter 30 under test further increase, the detection liquid movement unit 10 can operate in the third pumping mode.

[0042] It is also understandable that the first pump body 141 and the second pump body 142 serve as backups for each other. If one of them fails, it can be shut down and the other pump body can be activated without affecting the flow meter's testing and calibration. In the actual testing process, a suitable pumping mode can be selected according to the flow specification and diameter of the flow meter 30 under test, thereby selecting a suitable flow detection range. This avoids testing the flow meter 30 with a smaller flow specification and diameter when the flow meter testing system is operating in a relatively large flow detection range, which helps to reduce the liquid impact on the flow meter and the power consumption of the pump body when the flow meter is being tested.

[0043] See again Figures 1-2 , Figures 5-7 The container 13 has a first outlet and a second outlet at its bottom. One end of the first pump body 141 is connected to the first outlet through a first inlet pipe 151 with a first inlet valve 152. The other end of the first pump body 141 is connected to the upstream pipeline 12 through a first outlet pipe 191 with a first outlet valve 192. One end of the second pump body 142 is connected to the second outlet through a second inlet pipe 161 with a second inlet valve 162. The other end of the second pump body 142 is connected to the upstream pipeline 12 through a second outlet pipe 193 with a second outlet valve 194.

[0044] With this configuration, when the detection liquid movement unit 10 operates in the first pump water mode, the water in container 13 is... Figure 5 The flow trajectory, indicated by the red dashed arrow, flows sequentially through the first inlet pipe 151, the first pump body 141, and the first outlet pipe 191 before entering the upstream pipe 12; when the detection liquid moving unit 10 operates in the second pumping mode, the water in container 13 flows according to... Figure 6 The flow trajectory, indicated by the red dashed arrow, sequentially flows through the second inlet pipe 161, the second pump body 142, and the second outlet pipe 193 before entering the upstream pipe 12; when the detection liquid movement unit 10 operates in the third pump water mode, the water in container 13 flows according to... Figure 7 The two flow paths indicated by the red dashed arrows enter the upstream pipeline 12. One flow path includes the first inlet pipe 151, the first pump body 141 and the first outlet pipe 191, and the other flow path includes the second inlet pipe 161, the second pump body 142 and the second outlet pipe 193.

[0045] The selection and adjustment methods for the pump mode are as follows:

[0046] When the first inlet valve 152 and the first outlet valve 192 are opened, at least one of the second inlet valve 162 and the second outlet valve 194 is closed, the first pump body 141 is started and the second pump body 142 is turned off, the detection liquid movement unit 10 operates in the first pump mode.

[0047] When at least one of the first inlet valve 152 and the first outlet valve 192 is closed, the second inlet valve 162 and the second outlet valve 194 are opened, the first pump body 141 is shut down and the second pump body 142 is started, the detection liquid movement unit 10 operates in the second pump mode.

[0048] When the first inlet valve 152, the first outlet valve 192, the second inlet valve 162, and the second outlet valve 194 are all open, and the first pump body 141 and the second pump body 142 are all started, the detection liquid moving unit 10 operates in the third pumping mode.

[0049] In some embodiments, multiple standard flow meters are configured, connected in parallel, each with a different fluid cavity inner diameter. One end of each standard flow meter is connected to the series pipeline 22, and the other end forms a test mounting position with the downstream pipeline 24. It can be understood that multiple standard flow meters and the downstream pipeline 24 respectively form multiple test mounting positions, each suitable for installing flow meters 30 with different flow specifications and diameters. With this configuration, the flow meter testing system can be compatible with multiple flow meter specifications. In actual testing, a suitable standard flow meter can be matched to the flow meter 30 according to its flow specification. Then, the flow meter 30 and the matched standard flow meter are connected in series, thereby installing the flow meter 30 to the matched test mounting position.

[0050] It should be noted that multiple installation positions to be tested may overlap or be located in the same position in space. The installation position of the flow meter to be tested 30 depends on the standard flow meter directly connected in series with the flow meter to be tested 30. When the standard flow meter directly connected in series with the flow meter to be tested 30 changes, even if the spatial position of the flow meter to be tested 30 remains unchanged, the installation position of the flow meter to be tested 30 has changed.

[0051] See Figure 3 and Figure 4 Three standard flow meters are configured: the first standard flow meter 231, the second standard flow meter 232, and the third standard flow meter 233. The nominal diameters of the first standard flow meter 231, the second standard flow meter 232, and the third standard flow meter 233 are 15 mm, 25 mm, and 50 mm, respectively.

[0052] In some embodiments, the detection liquid movement unit 10 further includes a reflux line 171 equipped with a reflux control valve 172, see reference. Figure 2 , Figure 4 , Figures 5-7One end of the return pipe 171 is connected to the upstream pipe 12, and the other end is connected to the container 13. With this configuration, the container 13, the pump body, the upstream pipe 12, and the return pipe 171 form a circulation loop. This circulation loop can protect the pump body by circulating a small flow of water through the pump body, maintaining the small flow of water required for the pump body to operate, and preventing the pump body from overheating or cavitation.

[0053] In some embodiments, the flow meter detection movement unit 20 also includes a return water line 25, see [reference]. Figures 3-4 One end of the return water pipe 25 is connected to the downstream pipe 24. After the detection liquid moving unit 10 and the flow meter detection moving unit 20 are both deployed on site and the series pipe 22 is connected to the upstream pipe 12 and the standard flow meter, the other end of the return water pipe 25 extends into the container 13.

[0054] With this configuration, the water in container 13 can flow back into container 13 in sequence through the pump body, upstream pipeline 12, series pipeline 22, standard flow meter, flow meter under test 30, downstream pipeline 24 and return water pipeline 25, realizing the circulation and use of water. Therefore, flow meter testing and calibration can be performed for a long time without replenishing water into container 13, improving the ease of use of the flow meter testing system.

[0055] In some embodiments, the flow meter detection movement unit 20 further includes a positioning support 26, see [reference] Figure 3 and Figure 4 The bottom end of the positioning support 26 is fixed relative to the second vehicle 21, for example, it can be attached to the ground, and the top end of the positioning support 26 extends to the installation position to be inspected.

[0056] With this configuration, the positioning support 26 can provide effective support and positioning reinforcement for the flow meter 30 installed at the test installation position, preventing the flow meter 30 from shaking due to fluid impact, and improving the reliability and accuracy of the test calibration of the flow meter 30.

[0057] Optionally, the series pipeline 22 includes a first flexible hose for detachably connecting to the upstream pipeline 12; and / or, the upstream pipeline 12 includes a second flexible hose for detachably connecting to the series pipeline 22, the first and second hoses being capable of bending, twisting, elongating or shortening.

[0058] With this setup, the connection between the series pipeline 22 and the upstream pipeline 12 is easier, eliminating the need for personnel to spend a lot of time on-site repeatedly adjusting the relative positions between the detection liquid moving unit 10 and the flow meter detection moving unit 20. The first hose and / or the second hose are deformed to adapt the series pipeline 22 and the upstream pipeline 12 to the positional deviation between the detection liquid moving unit 10 and the flow meter detection moving unit 20.

[0059] In some embodiments, the detection liquid moving unit 10 includes a first electrical control cabinet 18 mounted on the first frame 111, and the flow meter detection moving unit 20 includes a second electrical control cabinet 28 mounted on the second frame 211. This configuration results in higher integration of both the detection liquid moving unit 10 and the flow meter detection moving unit 20. The first electrical control cabinet 18 can be moved along with the container 13 and the pump body, and the second electrical control cabinet 28 can be moved along with the standard flow meter. Specifically, the flow meter detection system also includes a communication module located in either the first electrical control cabinet 18 or the second electrical control cabinet 28. The communication module and the flow meter 30 under test are connected via data wiring.

[0060] The communication module is used to acquire the flow detection result data of the flow meter 30 under test and transmit the data to the cloud or local server. To ensure the flow meter testing system is compatible with flow meters 30 using different communication protocols and meets the signal transmission requirements of various industrial flow meters, the communication module supports multiple communication protocols and includes multiple different types of communication connection ports. Each communication connection port can be connected to the flow meter 30 under test via a matching data cable, thereby physically connecting and communicating with the flow meter 30. Optionally, the communication module supports multiple protocols such as Profinet, DP / PA, FF, HART, and analog signals.

[0061] In some embodiments, the flow meter detection moving unit 20 also includes a temperature sensor 291, a pressure sensor 292, and a flow regulating valve 293 located in the downstream pipeline 24. The temperature sensor 291 and the pressure sensor 292 can monitor the state of water or other types of fluid media in real time to ensure the consistency of environmental parameters for flow detection operations. The flow regulating valve 293 can help stabilize the fluid media and ensure the hydraulic stability of water or other types of fluid media flowing through the standard flow meter and the flow meter under test 30.

[0062] See Figure 2 In some embodiments, the bottom of the container 13 is also connected to a drain pipe 195, which allows all the water in the container 13 to flow out and be drained.

[0063] See Figure 3In some embodiments, the second vehicle 21 includes a platform formed on top of the second frame 211, with multiple standard flow meters arranged side by side and inclined relative to the ground and horizontal direction. The end of each standard flow meter closer to the ground forms a standard inlet end and is connected to the series pipeline 22, and the end of each standard flow meter farther from the ground forms a standard outlet end and extends to the platform. A test installation position is formed between the standard outlet end and the downstream pipeline 24. The flow meter detection moving unit 20 also includes a flange assembly 272 and a test fixture on the platform. The flow meter 30 to be tested, located in the test installation position, is connected to the standard flow meter and the downstream pipeline 24 through the flange assembly 272 and is clamped and fixed by the test fixture, thereby improving the structural integrity of the flow meter 30 to be tested and the downstream pipeline 24 and avoiding the flow meter 30 to be tested from being affected by insufficient positioning, thus preventing the test calibration.

[0064] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A flow meter detection system, characterized in that, include: The detection liquid moving unit (10) includes a first carrier and an upstream pipeline (12), a container (13), a first pump body (141), and a second pump body (142) disposed on the first carrier; The flow meter detection moving unit (20) includes a second carrier and a series pipeline (22) disposed on the second carrier, a standard flow meter and a downstream pipeline (24); The first pump body (141) and the second pump body (142) are connected in parallel, and their respective ends are connected to the container (13) and the upstream pipeline (12). The series pipeline (22) is detachably connected to the upstream pipeline (12) and / or the standard flow meter, and the standard flow meter and the downstream pipeline (24) form a test installation position.

2. The flow meter detection system as described in claim 1, characterized in that, Both the first pump body (141) and the second pump body (142) are centrifugal gear pumps; and / or, The rated flow rate of the first pump body (141) is 10 m³ / h, and the rated flow rate of the second pump body (142) is 22 m³ / h; and / or, The first pump body (141) is a first variable frequency pump equipped with a first frequency converter, and the second pump body (142) is a second variable frequency pump equipped with a second frequency converter.

3. The flow meter detection system as described in claim 1, characterized in that, The first vehicle includes a first vehicle (11) that carries the container (13), the first pump body (141), and the second pump body (142); and / or, One end of the first pump body (141) is connected to the container (13) through a first inlet pipe (151) equipped with a first inlet valve (152), and the other end is connected to the upstream pipeline (12) through a first outlet pipe (191) equipped with a first outlet valve (192); one end of the second pump body (142) is connected to the container (13) through a second inlet pipe (161) equipped with a second inlet valve (162), and the other end is connected to the upstream pipeline (12) through a second outlet pipe (193) equipped with a second outlet valve (194).

4. The flow meter detection system according to any one of claims 1 to 3, characterized in that, The standard flow meter is configured in multiple ways, and the multiple standard flow meters are arranged in parallel and each has a different fluid cavity inner diameter. One end of each standard flow meter is connected to the serial pipeline (22), and the other end forms the test installation position between the serial pipeline (24) and the downstream pipeline (24).

5. The flow meter detection system according to any one of claims 1 to 3, characterized in that, The detection liquid moving unit (10) also includes a reflux pipeline (171) equipped with a reflux control valve (172), one end of which is connected to the upstream pipeline (12) and the other end is connected to the container (13).

6. The flow meter detection system according to any one of claims 1 to 3, characterized in that, The flow meter detection moving unit (20) also includes a return water pipe (25), one end of which is connected to the downstream pipe (24), and the return water pipe (25) extends to point the other end into the container (13).

7. The flow meter detection system according to any one of claims 1 to 3, characterized in that, The flow meter detection moving unit (20) further includes a positioning support (26), the second carrier includes a second vehicle (21) carrying the standard flow meter, the bottom end of the positioning support (26) is fixed relative to the second vehicle (21), and the top end of the positioning support (26) extends to the installation position to be inspected.

8. The flow meter detection system according to any one of claims 1 to 3, characterized in that, The flow meter detection system also includes a communication module for connecting the flow meter under test (30) via a communication cable, the communication module including multiple different types of communication cable ports.

9. The flow meter detection system according to any one of claims 1 to 3, characterized in that, The series pipeline (22) includes a first flexible hose for detachably connecting to the upstream pipeline (12); and / or, the upstream pipeline (12) includes a second flexible hose for detachably connecting to the series pipeline (22).

10. The flow meter detection system according to any one of claims 1 to 3, characterized in that, The second carrier includes a second vehicle (21) carrying the standard flow meter, the second vehicle (21) including a frame, the standard flow meter including a standard outlet extending to the frame, the standard outlet forming the installation position to be inspected between the standard outlet and the downstream pipeline (24); wherein: The flow meter detection moving unit (20) further includes a detection fixture disposed on the stand; and / or, the flow meter detection moving unit (20) further includes a flange assembly (272) mounted on the stand.

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