Flowmeter installation configuration evaluation system

Abstract

The application discloses a flowmeter installation and configuration evaluation system which comprises a first flow field disturbance manufacturing unit, a first valve adjusting unit and a first metering unit arranged in sequence along a gas flow direction, the first flow field disturbance manufacturing unit is used for manufacturing various forms of disturbances in the upstream flow field of the first metering unit according to actual evaluation requirements, the first valve adjusting unit is used for adjusting the on-off of the system and the flow and pressure of the gas according to actual evaluation requirements, and the first metering unit is used for setting a first flowmeter to be evaluated and collecting flow data of the gas through the first flowmeter to be evaluated. The application solves the technical problem that the metering performance of the flowmeter under the condition of complex upstream pipelines cannot be accurately evaluated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of natural gas flow metering, further relates to a flow meter installation configuration evaluation system, and particularly relates to a flow meter installation configuration evaluation system for complex pipeline conditions. BACKGROUND

[0002] With the international and domestic natural gas pipelines being built and put into production one after another, the downstream branch lines of each long-distance pipeline and local natural gas pipe networks also begin to be built one after another, and the number of natural gas flow meters for natural gas trade handover and internal handover also increases dramatically. The flow meter is an important component of natural gas trade metering, and the accurate and reliable flow metering is a necessary condition to ensure the interests of both parties to the trade.

[0003] At present, the user mainly transports the flow meter to the designated metering verification organization at regular intervals, and compares the flow meter with the standard metering device of the metering verification organization to detect and evaluate the metering performance of the flow meter. At this time, the pipeline condition used is an ideal pipeline condition, and the installation configuration is usually much higher than the installation configuration requirements proposed by the relevant standards, specifications or manufacturers. However, in the actual installation environment, the upstream of the flow meter often has complex pipeline conditions such as elbows, manifold, tees, flow regulators, filters, diameter changes (such as steps, reducing size heads and / or expanding size heads) and valves, which may cause vortex, asymmetry, flatness, sharp peak flow profile or a combination of the above flow profiles, thereby affecting the metering accuracy. Therefore, the detection and evaluation under the ideal pipeline condition cannot accurately determine whether the metering performance of the flow meter meets the needs of on-site use.

[0004] In view of the problem in the prior art that the metering performance of the flow meter with complex pipeline conditions upstream cannot be accurately evaluated, no effective solution has been proposed so far.

[0005] Therefore, the present application is proposed by the present inventor on the basis of years of experience and practice in the relevant industry to overcome the defects of the prior art. SUMMARY

[0006] The present application aims to provide a flow meter installation configuration evaluation system, which can not only adjust the gas flow rate according to the actual needs, change various complex upstream pipeline conditions to form complex flow states, but also change the flow meter installation configuration according to the upstream pipeline conditions without the need to change the external process flow of the installation site multiple times, collect, process and store flow data, compare the metering performance of the flow meter under different installation configurations, and judge whether the metering performance meets the actual use or test requirements in combination with the flow data of the standard device.

[0007] The present application can be implemented by using the following technical solutions:

[0008] The application provides a flowmeter installation configuration evaluation system, which comprises a first flow field disturbance manufacturing unit, a first valve adjusting unit and a first metering unit arranged in sequence along a gas flow direction, wherein:

[0009] The first flow field disturbance manufacturing unit is used for manufacturing various forms of disturbances in the upstream flow field of the first metering unit according to actual evaluation requirements.

[0010] The first valve adjusting unit is used for adjusting the on-off of the system and the flow and pressure of the gas according to actual evaluation requirements.

[0011] The first metering unit is used for arranging a first flowmeter to be evaluated, and collecting flow data of the gas through the first flowmeter to be evaluated.

[0012] In a preferred embodiment of the application, the flowmeter installation configuration evaluation system further comprises a standard metering unit arranged downstream of the first metering unit along the gas flow direction, and the standard metering unit is used for collecting flow data of the gas under a standard flow field, so as to compare with the flow data collected by the first flowmeter to be evaluated.

[0013] In a preferred embodiment of the application, the standard metering unit comprises a positive displacement flowmeter and a supporting device for collecting, processing and storing the pressure, temperature and components of the gas.

[0014] In a preferred embodiment of the application, the flowmeter installation configuration evaluation system further comprises a first combined straight pipe unit arranged between the first flow field disturbance manufacturing unit and the first metering unit, and a first telescopic unit arranged downstream of the standard metering unit along the gas flow direction, wherein the first combined straight pipe unit is used for adjusting the distance between the first flow field disturbance manufacturing unit and the first metering unit, and the first telescopic unit is used for fine-tuning the length of the pipeline in the system.

[0015] In a preferred embodiment of the application, the flowmeter installation configuration evaluation system further comprises a first flow regulating unit arranged between the first flow field disturbance manufacturing unit and the first metering unit, and the first flow regulating unit is used for adjusting the disturbed flow state of the gas upstream of the first metering unit.

[0016] In a preferred embodiment of the application, the flowmeter installation configuration evaluation system further comprises a second valve adjusting unit, a second flow field disturbance manufacturing unit and a second metering unit arranged in sequence along the gas flow direction downstream of the first telescopic unit.

[0017] The second valve adjusting unit is used for adjusting the on-off of the system and the flow and pressure of the gas in cooperation with the first valve adjusting unit.

[0018] The second flow field disturbance manufacturing unit is used to manufacture various forms of disturbance to the flow field upstream of the second metering unit according to actual evaluation requirements.

[0019] The second metering unit is used to set a second to-be-evaluated flow meter, and collect flow data of the gas through the second to-be-evaluated flow meter.

[0020] In a preferred embodiment of the present application, the first flow field disturbance manufacturing unit and the second flow field disturbance manufacturing unit respectively include a space elbow, a manifold, a tee, a filter and / or a pipe with a diameter change.

[0021] In a preferred embodiment of the present application, the first metering unit and the second metering unit respectively include a to-be-evaluated flow meter and a supporting device for collecting, processing and storing the pressure, temperature and composition of the gas.

[0022] In a preferred embodiment of the present application, the flow meter installation and configuration evaluation system further includes a second combined straight pipe unit arranged between the second flow field disturbance manufacturing unit and the second metering unit, and a second telescopic unit arranged downstream of the second metering unit along the flow direction of the gas, the second combined straight pipe unit is used to adjust the distance between the second flow field disturbance manufacturing unit and the second metering unit; and the second telescopic unit is used to fine-tune the length of the pipe in the system.

[0023] In a preferred embodiment of the present application, the first combined straight pipe unit and the second combined straight pipe unit respectively include a plurality of detachable connected straight pipes, the length, material and surface roughness of each straight pipe are the same.

[0024] In a preferred embodiment of the present application, the flow meter installation and configuration evaluation system further includes a second flow regulating unit arranged between the second combined straight pipe unit and the second metering unit, the second flow regulating unit is used to adjust the disturbed flow state of the gas upstream of the second metering unit.

[0025] In a preferred embodiment of the present application, the flow meter installation and configuration evaluation system further includes a third valve adjusting unit arranged downstream of the second telescopic unit along the flow direction of the gas.

[0026] In a preferred embodiment of the present application, the flow meter installation and configuration evaluation system further includes a venting unit arranged between the first valve adjusting unit and the second valve adjusting unit and / or arranged between the second valve adjusting unit and the third valve adjusting unit, the venting unit is used to vent the gas in the system.

[0027] The flowmeter installation configuration evaluation system of the application has the following features and advantages: the first flow field disturbance manufacturing unit, the first valve adjusting unit and the first metering unit are sequentially arranged along the gas flow direction, the flowmeter to be evaluated can be arranged in the first metering unit, the first flow field disturbance manufacturing unit can manufacture various forms of disturbance to the upstream flow field of the first metering unit according to the actual evaluation requirements, the first valve adjusting unit can adjust the on-off, flow and pressure of the system according to the actual evaluation requirements, thereby quantitatively measuring the flow field disturbance intensity and adjusting in real time, manufacturing the working condition of different pipe flow field disturbance intensity, the flowmeter to be evaluated can collect the flow data of the gas in the flow field, the metering performance of the flowmeter to be evaluated under the condition of the complex upstream pipe and the metering performance change under the installation configuration of different complex pipes can be determined, and whether the flowmeter to be evaluated meets the demand of field use can be judged, thereby ensuring the accurate evaluation of the metering performance of the flowmeter to be evaluated. BRIEF DESCRIPTION OF DRAWINGS

[0028] The following drawings are only intended to illustrate and explain the application and do not limit the scope of the application.

[0029] Wherein:

[0030] Figure 1 Fig. 1 is a structural schematic diagram of the flowmeter installation configuration evaluation system of the application.

[0031] Figure 2 Fig. 2 is another structural schematic diagram of the flowmeter installation configuration evaluation system of the application.

[0032] Figure 3 Fig. 3 is a third structural schematic diagram of the flowmeter installation configuration evaluation system of the application.

[0033] The reference numerals in the application are as follows:

[0034] 1. first flow field disturbance manufacturing unit; 2. first valve adjusting unit;

[0035] 3. first combined straight pipe unit; 4. first flow regulating unit;

[0036] 5. first metering unit; 6. standard metering unit;

[0037] 7. first telescopic unit; 8. second valve adjusting unit;

[0038] 9. second flow field disturbance manufacturing unit; 10. second combined straight pipe unit;

[0039] 11. second flow regulating unit; 12. second metering unit;

[0040] 13. second telescopic unit; 14. venting unit;

[0041] 15. The third valve regulating unit. DETAILED DESCRIPTION

[0042] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described with reference to the accompanying drawings.

[0043] As shown in Figure 1 The present application provides a flowmeter installation configuration evaluation system, which comprises a first flow field disturbance manufacturing unit 1, a first valve regulating unit 2 and a first metering unit 5 arranged in sequence along the gas flow direction, wherein: the first flow field disturbance manufacturing unit 1 is used to manufacture various forms of disturbances in the upstream flow field of the first metering unit 5 according to the actual evaluation requirements; the first valve regulating unit 2 is used to regulate the on-off of the system and the flow rate and pressure of the gas according to the actual evaluation requirements; and the first metering unit 5 is used to set a first to-be-evaluated flowmeter and collect the flow data of the gas through the first to-be-evaluated flowmeter.

[0044] The present application can set the first to-be-evaluated flowmeter in the first metering unit 5, manufacture various forms of disturbances in the upstream flow field of the first metering unit 5 through the first flow field disturbance manufacturing unit 1 according to the actual evaluation requirements, and regulate the on-off of the system and the flow rate and pressure of the gas through the first valve regulating unit 2 according to the actual evaluation requirements, so as to quantitatively measure the disturbance intensity of the flow field and adjust it in real time, to manufacture the working conditions of different pipe flow field disturbance intensities. The first to-be-evaluated flowmeter collects the flow data of the gas in the above flow field, which can determine the metering performance of the to-be-evaluated flowmeter under the condition of complex upstream pipe and the metering performance change under the installation configuration of different complex pipes, and further judge whether the first to-be-evaluated flowmeter meets the demand of field use.

[0045] Further, the first flow field disturbance manufacturing unit 1 comprises one or more pipe fittings in combination of space elbows, manifold, tee, filter and / or pipes with different diameters, so as to manufacture different forms of disturbances upstream of the first metering unit 5 in different combination forms. The pipe fittings in the first flow field disturbance manufacturing unit 1 can be disassembled and reassembled, and the axis of the connecting flange located at both ends of the first flow field disturbance manufacturing unit 1 after combination should coincide with the axes of the upstream and downstream pipes.

[0046] Further, the first valve regulating unit 2 can be but is not limited to a valve. The first valve regulating unit 2 can control the flow rate and pressure of the gas by adjusting the opening degree when the system is running, so that the system obtains stable and controllable gas flow rate and test pressure. When it is necessary to change the installation configuration or disassemble, the upstream and downstream pipes can be cut off, so that the system is completely independent of the external process, facilitating pressure relief or venting operation.

[0047] Further, the first metering unit 5 comprises a flowmeter to be evaluated (i.e., a first flowmeter to be evaluated) and a supporting device for collecting, processing and storing the pressure, temperature and composition of the gas. The first metering unit 5 can collect real-time or cumulative flow data and related parameters to comprehensively evaluate the metering performance of the flowmeter; the supporting device can be, but is not limited to, various sensors for detecting the pressure, temperature and composition of the gas, and a computer for aggregating and storing the data collected by the sensors.

[0048] In an optional embodiment of the present application, as shown in Figure 2 , Figure 3 , the flowmeter installation and configuration evaluation system further comprises a standard metering unit 6, which is arranged downstream of the first metering unit 5 along the flow direction of the gas. The standard metering unit 6 is used to collect the flow data of the gas under a standard flow field, so as to compare with the flow data collected by the first flowmeter to be evaluated, thereby obtaining the metering performance of the first flowmeter to be evaluated.

[0049] Specifically, the standard metering unit 6 comprises a positive displacement flowmeter and a supporting device for collecting, processing and storing the pressure, temperature and composition of the gas. The standard metering unit 6 can collect, process and store standard flow data, and compare with the flow data collected by the first metering unit 5. The flow range and pressure rating of the standard metering unit 6 should be the same as those of the first metering unit 5, the accuracy level of the standard metering unit 6 should be higher than or equal to that of the first metering unit 5, the standard metering unit 6 should be verified, calibrated or tested by a designated metrological verification institution to confirm that the standard metering unit 6 has good metering performance, and the maximum error of the standard metering unit 6 should be less than or equal to 0.5%. The supporting device can be, but is not limited to, various sensors for detecting the pressure, temperature and composition of the gas, and a computer for aggregating and storing the data collected by the sensors.

[0050] In an optional embodiment of the present application, as shown in Figure 2 , Figure 3 , the flowmeter installation and configuration evaluation system further comprises a first combined straight pipe unit 3 arranged between the first flow field disturbance manufacturing unit 1 and the first metering unit 5, and a first telescopic unit 7 arranged downstream of the standard metering unit 6 along the flow direction of the gas. The first combined straight pipe unit 3 is used to adjust the distance between the first flow field disturbance manufacturing unit 1 and the first metering unit 5; the first telescopic unit 7 is used to finely adjust the length of the pipeline in the system. In addition, the first telescopic unit 7 can also be arranged at any position between the first flow field disturbance manufacturing unit 1 and the first metering unit 5, so as to adjust the distance between the first flow field disturbance manufacturing unit 1 and the first metering unit 5 on the basis of changing the arrangement and combination of the first combined straight pipe unit 3.

[0051] Specifically, the first combined straight pipe unit 3 comprises detachably connected multiple straight pipes, each of which is connected in series in the system, and the distance between the first flow field disturbance manufacturing unit 1 and the first metering unit 5 can be adjusted by the combination of the multiple straight pipes according to the installation configuration requirements, so as to form different installation configurations, which can meet the evaluation requirements without affecting the floor area and overall process of the system. The length, material and surface roughness of each straight pipe are the same.

[0052] Further, the first telescopic unit 7 can be, but is not limited to, a telescopic device, which is mainly used to compensate for the length change of the system when the combination mode of the first flow field disturbance manufacturing unit 1 is changed and the installation configuration is changed, and can also offset the additional stress caused by temperature change and mechanical vibration and the like. In addition, since the axial lengths of the different pipe combination forms in the first flow field disturbance manufacturing unit 1 are different, the first telescopic unit 7 can be adjusted to achieve the purpose of close connection between the first flow field disturbance manufacturing unit 1 and the upstream and downstream pipelines.

[0053] In an optional embodiment of the present application, as shown in Figure 2 , Figure 3 The flow meter installation configuration evaluation system further comprises a first flow regulating unit 4 arranged between the first flow field disturbance manufacturing unit 1 and the first metering unit 5, the first flow regulating unit 4 is used for adjusting the disturbed flow state of the gas upstream of the first metering unit 5, and the first metering unit 5 will exhibit different metering performances according to different adjustment effects.

[0054] Further, the first flow regulating unit 4 can be, but is not limited to, a plate type, tube bundle type or other form of flow regulator, which can be installed at any position upstream of the first metering unit 5.

[0055] In an optional embodiment of the present application, as shown in Figure 3 The flow meter installation configuration evaluation system further comprises a second valve adjusting unit 8, a second flow field disturbance manufacturing unit 9 and a second metering unit 12 arranged downstream of the first telescopic unit 7 along the gas flow direction; the second valve adjusting unit 8 is used for adjusting the on-off of the system and the flow and pressure of the gas in cooperation with the first valve adjusting unit 2; the second flow field disturbance manufacturing unit 9 is used for manufacturing multiple forms of disturbances in the upstream flow field of the second metering unit 12 according to the actual evaluation requirements; and the second metering unit 12 is used for arranging a second to-be-evaluated flow meter and collecting the flow data of the gas through the second to-be-evaluated flow meter.

[0056] Further, the second flow field disturbance manufacturing unit 9 includes one or more combinations of space elbow, manifold, tee, filter and / or pipe with varying diameter to manufacture different forms of disturbance upstream of the second metering unit 12 in different combinations, and the disturbances manufactured upstream of the first metering unit 5 do not interfere with each other. Each pipe in the second flow field disturbance manufacturing unit 9 can be disassembled and reassembled, and the axes of the connecting flanges at both ends of the second flow field disturbance manufacturing unit 9 after reassembly should coincide with the axes of the upstream and downstream pipes. The second flow field disturbance manufacturing unit 9 can be assembled with different components than the first flow field disturbance manufacturing unit 1, so as to manufacture different forms of disturbance upstream of the first metering unit 5 and the second metering unit 12, respectively. For example, the first flow field disturbance manufacturing unit 1 can use a space elbow as the disturbance member, and the second flow field disturbance manufacturing unit 9 can use a manifold combined with a pipe with varying diameter as the disturbance member. In this case, the gas is metered by the first metering unit 5 after passing through the space elbow, and then the gas is metered by the second metering unit 12 after passing through the fully developed pipe, the manifold and the pipe with varying diameter.

[0057] Further, the second valve regulating unit 8 can be but is not limited to a valve, which can control the flow rate and pressure of the gas by adjusting the opening degree when the system is running, so that the system obtains stable and controllable gas flow and test pressure. When it is necessary to change the installation configuration or disassemble, the second valve regulating unit 8 can cut off the upstream and downstream pipes, so that the system is completely independent of the external process, and the pressure relief or venting operation is facilitated.

[0058] Further, the second metering unit 12 includes a flowmeter to be evaluated (i.e., a second flowmeter to be evaluated) and a supporting device for collecting, processing and storing the pressure, temperature and composition of the gas. The second metering unit 12 can collect real-time or cumulative flow data and related parameters to comprehensively evaluate the metering performance of the flowmeter; the supporting device can be but is not limited to various sensors for detecting the pressure, temperature and composition of the gas, and a computer for aggregating and storing the data collected by the sensors. The flow range and pressure rating of the second metering unit 12 should be the same as those of the standard metering unit 6, and the accuracy rating of the standard metering unit 6 should be higher than or equal to that of the second metering unit 12.

[0059] Specifically, the matched devices in the first metering unit 5 and the second metering unit 12 can be installed at the pressure and temperature taking interfaces reserved on the corresponding flow meter to be evaluated, or can be installed on the upstream pipeline or the downstream pipeline of the corresponding flow meter to be evaluated according to requirements. After collecting data, the matched devices can summarize and re-calculate the data through a computer, so as to convert the flow data into the standard condition through the computer, compare the flow data with the flow data collected by the standard metering unit 6 under the same working condition, and achieve the purpose of comprehensively evaluating the metering performance of the flow meter to be evaluated.

[0060] In an optional embodiment of the present application, as shown in Figure 3 The flow meter installation configuration evaluation system further comprises a second combined straight pipe unit 10 arranged between the second flow field disturbance manufacturing unit 9 and the second metering unit 12, and a second telescopic unit 13 arranged downstream of the second metering unit 12 along the flow direction of the gas, the second combined straight pipe unit 10 is used to adjust the distance between the second flow field disturbance manufacturing unit 9 and the second metering unit 12, and the second telescopic unit 13 is used to finely adjust the length of the pipeline in the system. In addition, the second telescopic unit 13 can also be arranged at any position between the second flow field disturbance manufacturing unit 9 and the second metering unit 12, so as to adjust the distance between the second flow field disturbance manufacturing unit 9 and the second metering unit 12 on the basis of changing the arrangement and combination of the second combined straight pipe unit 10.

[0061] Specifically, the second combined straight pipe unit 10 comprises a plurality of detachable straight pipes connected in series, and the distance between the second flow field disturbance manufacturing unit 9 and the second metering unit 12 can be adjusted by the combination of the straight pipes according to installation and configuration requirements, so as to form different installation and configurations, so as to meet the evaluation requirements without affecting the floor area and overall process of the system. The length, material and surface roughness of each straight pipe are the same. Since the length of the second combined straight pipe unit 10 is sufficient to make the flow field manufactured by the first flow field disturbance manufacturing unit 1 fully developed, the gas entering the second flow field disturbance manufacturing unit 9 has returned to the same state as before entering the first flow field disturbance manufacturing unit 1, at this time, the two flow fields centered on the first metering unit 5 and the second metering unit 12 are independent of each other and have the same initial state, so two different complex pipeline conditions can be tested at the same time according to actual needs.

[0062] Further, the second telescopic unit 13 can be, but is not limited to, a telescopic device, which is mainly used to compensate the length change of the system when the combination mode of the second flow field disturbance manufacturing unit 9 is changed and the installation configuration is changed, and can also offset the additional stress caused by temperature change and mechanical vibration and other factors. In addition, since the axial lengths of the different pipe combination forms in the second flow field disturbance manufacturing unit 9 are different, the second telescopic unit 13 can be adjusted to achieve the purpose of closely connecting the second flow field disturbance manufacturing unit 9 with the upstream pipeline and the downstream pipeline.

[0063] In an optional embodiment of the present application, as shown in Figure 3 the flowmeter installation configuration evaluation system further comprises a second flow regulating unit 11 arranged between the second combination straight pipe unit 10 and the second metering unit 12, and the second flow regulating unit 11 is used to adjust the disturbed flow state of the gas upstream of the second metering unit 12. According to different adjustment effects, the second metering unit 12 will exhibit different metering performances.

[0064] Further, the second flow regulating unit 11 can be, but is not limited to, a plate type, tube bundle type or other form of flow adjuster, which can be installed at any position upstream of the second metering unit 12.

[0065] In an optional embodiment of the present application, as shown in Figure 3 the flowmeter installation configuration evaluation system further comprises a third valve adjusting unit 15 arranged downstream of the second telescopic unit 13 along the flow direction of the gas.

[0066] Further, the third valve adjusting unit 15 can be, but is not limited to, a valve.

[0067] In an optional embodiment of the present application, as shown in Figure 3 the flowmeter installation configuration evaluation system further comprises a venting unit 14 arranged between the first valve adjusting unit 2 and the second valve adjusting unit 8 and / or arranged between the second valve adjusting unit 8 and the third valve adjusting unit 15, and the venting unit 14 is used to vent or release the pressure of the gas in the system. According to actual needs, the venting unit 14 between the first valve adjusting unit 2 and the second valve adjusting unit 8 and / or the venting unit 14 between the second valve adjusting unit 8 and the third valve adjusting unit 15 can be closed, and then the gas in the system can be vented or released through the venting unit 14 on the corresponding pipe section, so as to reduce the gas consumption in the system. In addition, after the gas is vented, the components on the corresponding pipe section can be disassembled, replaced and installed without frequent switching or modification of the external process.

[0068] Further, the venting unit 14 comprises a venting valve, a collection pipeline and / or a venting pipeline.

[0069] In a specific embodiment of the present application, in order to facilitate combination, the first combined straight pipe unit 3 and the second combined straight pipe unit 10 are each composed of at least four 10D (D is the straight pipe passageway, 10D is the length of the straight pipe which is 10 times the straight pipe passageway) straight pipes, and at least one interface for collecting pressure data and temperature data is reserved at the position of 5D of each straight pipe. For example, first, two 10D straight pipes are arranged upstream of the first metering unit 5 to connect the first rectifying unit 4 and the first valve adjusting unit 2, then a 10D straight pipe is arranged to connect the first rectifying unit 4 and the first metering unit 5, a pressure sensor or a pressure transmitter is arranged at the interface of the straight pipe, and finally a 10D straight pipe can be arranged downstream of the first metering unit 5 (a temperature sensor or a temperature transmitter can be arranged at the interface of the straight pipe), which is the minimum installation requirement for the flowmeter under the current specified standard, and theoretically the flowmeter should have ideal metering performance within the allowable flow and pressure range; if one 10D straight pipe is arranged to connect the first rectifying unit 4 and the first valve adjusting unit 2, and one 10D straight pipe is arranged to connect the first rectifying unit 4 and the first metering unit 5, and a 10D straight pipe is arranged downstream of the first metering unit 5, the metering performance of the first flowmeter to be evaluated may be affected by the insufficient development of the upstream flow field of the first metering unit 5, and the flowmeter cannot be accurately evaluated.

[0070] The flowmeter installation configuration evaluation system of the present application has the following characteristics and advantages:

[0071] I. The flowmeter installation configuration evaluation system can detect and evaluate the performance of the flowmeter to be evaluated under different pipe internal flow field disturbance intensity conditions, the flow field disturbance intensity can be quantitatively measured and adjusted in real time, and the system is suitable for detecting the performance of the flowmeter under various complex pipe conditions, and has wider applicability.

[0072] II. The flowmeter installation configuration evaluation system can evaluate the metering performance of the flowmeter under various upstream complex pipe conditions, and can change the installation configuration of the flowmeter without changing the installation site process flow multiple times, which is convenient to operate and implement.

[0073] III. The flowmeter installation configuration evaluation system can detect the metering performance of the flowmeter when there is a complex pipe upstream of the flowmeter, evaluate the performance change of the flowmeter under different installation configurations, determine whether the metering performance meets the demand of on-site use, and then obtain the process pipe arrangement scheme with optimal site occupation and minimal impact of flow resistance, which can provide effective suggestions for the construction of the process pipe of the newly built flowmeter trade transfer metering station, and can also propose corresponding optimization measures for the built trade station, thereby efficiently promoting the optimization and construction of the trade station, reducing the cost of research and development and scientific research of the flowmeter related products, and effectively improving the research efficiency.

[0074] The above description is only illustrative of the present application and is not intended to limit the scope of the present application. Any variations and modifications made by any person skilled in the art without departing from the spirit and principles of the present application shall fall within the scope of the present application.

Claims

1. A flow meter installation and configuration evaluation system, characterized in that, The flow meter installation and configuration evaluation system includes a first flow field disturbance generation unit, a first valve adjustment unit, and a first metering unit arranged sequentially along the gas flow direction, wherein: The first flow field disturbance manufacturing unit is used to manufacture various forms of disturbance to the upstream flow field of the first metering unit according to the actual evaluation requirements; The first valve regulating unit is used to regulate the on / off state of the system and the flow rate and pressure of the gas according to the actual evaluation requirements; The first metering unit is used to set the first flow meter to be evaluated and to collect gas flow data through the first flow meter to be evaluated; The flow meter installation and configuration evaluation system also includes: A standard metering unit is set downstream of the first metering unit along the gas flow direction. The standard metering unit is used to collect gas flow data under a standard flow field and compare it with the flow data collected by the first flow meter to be evaluated. A first combined straight pipe unit is disposed between the first flow field disturbance manufacturing unit and the first metering unit, and a first telescopic unit is disposed downstream of the standard metering unit along the gas flow direction. The first combined straight pipe unit is used to adjust the distance between the first flow field disturbance manufacturing unit and the first metering unit; the first telescopic unit is used to fine-tune the length of the pipeline in the system. The first rectification unit is disposed between the first flow field disturbance generation unit and the first metering unit. The first rectification unit is used to adjust the disturbance flow state of the gas upstream of the first metering unit. The flow meter installation and configuration evaluation system also includes a second valve regulating unit, a second flow field disturbance generating unit, and a second metering unit located downstream of the first telescopic unit along the gas flow direction. The second valve regulating unit is used in conjunction with the first valve regulating unit to regulate the on / off state of the system and the flow rate and pressure of the gas; The second flow field disturbance generation unit is used to generate various forms of disturbance in the upstream flow field of the second metering unit according to actual evaluation requirements; The second metering unit is used to set the second flow meter to be evaluated and to collect gas flow data through the second flow meter to be evaluated; The flow meter installation and configuration evaluation system further includes a second combined straight pipe unit disposed between the second flow field disturbance manufacturing unit and the second metering unit, and a second telescopic unit disposed downstream of the second metering unit along the gas flow direction. The second combined straight pipe unit is used to adjust the distance between the second flow field disturbance manufacturing unit and the second metering unit; the second telescopic unit is used to fine-tune the length of the pipeline in the system. The flow meter installation and configuration evaluation system further includes a second rectification unit disposed between the second combined straight pipe unit and the second metering unit. The second rectification unit is used to adjust the turbulent flow state of the gas upstream of the second metering unit. The flow meter installation and configuration evaluation system also includes a third valve regulating unit located downstream of the second telescopic unit along the gas flow direction; The flow meter installation and configuration evaluation system further includes a venting unit disposed between the first valve regulating unit and the second valve regulating unit and / or between the second valve regulating unit and the third valve regulating unit, the venting unit being used to vent the gas in the system.

2. The flow meter installation and configuration evaluation system as described in claim 1, characterized in that, The standard metering unit includes a volumetric flow meter and supporting devices for collecting, processing, and storing the pressure, temperature, and composition of the gas.

3. The flow meter installation and configuration evaluation system as described in claim 1, characterized in that, The first flow field disturbance manufacturing unit and the second flow field disturbance manufacturing unit respectively include a spatial elbow, a manifold, a tee, a filter, and / or a pipe with varying diameter.

4. The flow meter installation and configuration evaluation system as described in claim 1, characterized in that, The first metering unit and the second metering unit each include a flow meter to be evaluated and a supporting device for collecting, processing and storing the pressure, temperature and composition of the gas.

5. The flow meter installation and configuration evaluation system as described in claim 1, characterized in that, The first combined straight pipe unit and the second combined straight pipe unit each include multiple detachably connected straight pipes, and the length, material, and surface roughness of each straight pipe are the same.

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