Flow testing system

Abstract

The utility model discloses a flow testing system which comprises a temperature adjusting unit, a flow calibrating device and a plurality of testing pipelines connected in parallel. Wherein the temperature adjusting unit is arranged in front of the flow calibrating device according to the flowing direction of a test medium, the output end of the flow calibrating device is connected with the input ends of the test pipelines connected in parallel through the connecting pipelines, and each test pipeline corresponds to one pipeline caliber and is provided with a corresponding flow meter; the temperature adjusting unit is arranged to heat or refrigerate the test medium; the flow calibrating device is arranged to calibrate the flow of the test medium which is about to flow into any test pipeline; and the flow meter on each test pipeline is set to meter the flow of the test medium when the test medium flows through the test pipeline to which the flow meter belongs. According to the embodiment of the invention, different flowmeters and different medium temperatures can be tested quickly, and the temperature of the test medium can be regulated and controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of flow testing, and more specifically, to a flow testing system. Background Art

[0002] In the process of flow calibration, it is often necessary to test the performance indicators of the flow meter through a flow calibration device. Conventional flow meters include DN15, DN25, DN40, DN50, DN80 and other caliber specifications to test different flow ranges.

[0003] In the related art, it is often necessary to first select the flow meter to be tested, then connect the flow calibration device, and perform the test using the test medium.

[0004] However, this method can only test flow meters of one caliber. When testing flow meters of other calibers, it is necessary to dismantle the flow meter of the original caliber and reinstall a new flow meter of other calibers, so the operation process is very cumbersome; and when testing with this method, the temperature of the test medium can only depend on the ambient temperature during the test, and the temperature of the test medium cannot be adjusted. Utility Model Content

[0005] The embodiment of the utility model provides a flow test system, comprising: a temperature adjustment unit, a flow verification device, and a plurality of parallel test pipelines; wherein the temperature adjustment unit is arranged in front of the flow verification device according to the flow direction of the test medium, the output end of the flow verification device is connected to the input end of the plurality of parallel test pipelines through a connecting pipeline, each test pipeline corresponds to a pipeline caliber, and is provided with a flow meter adapted to the caliber of the corresponding test pipeline;

[0006] The temperature regulating unit is configured to heat or cool the test medium;

[0007] The flow rate verification device is configured to verify the flow rate of the test medium that is about to flow into any test pipeline;

[0008] The flow meter on each of the test pipelines is configured to measure the flow of the test medium in the test pipeline when the test medium flows through the test pipeline to which the flow meter belongs.

[0009] The embodiment of the utility model sets pipelines of different calibers in parallel, and sets flow meters of different calibers on the corresponding pipelines, so that any one of the flow meters can be tested, thereby avoiding the tedious steps brought by the disassembly operation, quickly realizing the testing of different flow meters, and realizing the temperature control of the test medium by serially connecting the temperature adjustment unit.

[0010] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0012] Figure 1 This is a structural schematic diagram of a flow rate testing system of the utility model;

[0013] Figure 2 It is a structural schematic diagram of another flow rate testing system of the utility model;

[0014] Figure 3 This is a structural schematic diagram of another flow testing system of the utility model;

[0015] Figure 4 This is a structural schematic diagram of another flow testing system of the utility model;

[0016] Figure 5 This is a structural schematic diagram of another flow testing system of the utility model;

[0017] Figure 6 This is a structural schematic diagram of another flow testing system of the utility model;

[0018] Figure 7 This is a structural schematic diagram of another flow testing system of the utility model;

[0019] Figure 8 This is a structural schematic diagram of another flow testing system of the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the embodiments of the utility model will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0021] During the development of flow calibration devices and flow meters, it is often necessary to test the performance indicators of flow calibration devices or flow meters. The measurement range of conventional flow laboratories or metering stations mainly covers various test media such as water flow, gas, kerosene, and various caliber specifications such as DN15, DN25, DN40, DN50, DN80, and various flow ranges. However, due to the difficulty of deployment, conventional laboratories cannot provide test conditions for testing different flow meters, and the temperature of the test medium during testing in this way can only depend on the ambient temperature during the test, and the temperature of the test medium cannot be regulated.

[0022] To this end, the present disclosure provides a flow testing system. Figure 1 As shown, it includes: a temperature adjustment unit 11, a flow rate verification device 12, and a plurality of parallel test pipelines; wherein the temperature adjustment unit 11 is arranged in front of the flow rate verification device 12 according to the flow direction of the test medium, the output end of the flow rate verification device 12 is connected to the input end of the plurality of parallel test pipelines through a connecting pipeline, each test pipeline corresponds to a pipeline caliber, and is provided with a flow meter 13 ( Figure 1 Take three test pipelines as an example, and accordingly, a flow meter is set on each of the three test pipelines);

[0023] The temperature regulating unit 11 is configured to heat or cool the test medium;

[0024] The flow rate verification device 12 is configured to verify the flow rate of the test medium that is about to flow into any test pipeline;

[0025] The flow meter 13 on each of the test pipelines is configured to measure the flow of the test medium in the test pipeline when the test medium flows through the test pipeline to which the flow meter belongs.

[0026] When it is necessary to test a flow meter of a certain caliber, the flow calibration device is connected to the test pipeline where the flow meter of that caliber is located through a connecting pipeline, so as to calibrate the flow of the test medium that is about to flow into the connected test pipeline, and when the test medium flows into the test pipeline, the flow meter on it measures the test medium, thereby realizing the testing of any one of the flow meters.

[0027] The embodiment of the present disclosure sets pipelines of different calibers in parallel, and sets flow meters of different calibers on the corresponding pipelines, so that any one of the flow meters can be tested, thereby avoiding the tedious steps brought by the disassembly operation, quickly realizing the testing of different flow meters, and realizing the temperature control of the test medium by serially connecting a temperature regulating unit.

[0028] In an exemplary embodiment, Figure 2 As shown, the system further includes: a first valve 14 disposed on each test pipeline;

[0029] The first valve 14 on each of the test pipelines is configured to allow the test medium to pass through the corresponding test pipeline when it is opened.

[0030] When a flow meter of a certain caliber needs to be tested, the first valve connected to the flow meter of that caliber is opened, and the first valve connected to the flow meter of another caliber is closed. The flow calibration device calibrates the flow of the test medium that is about to flow into the connected test pipeline, and when the test medium flows into the test pipeline, the flow meter on it measures the test medium, thereby realizing the testing of any one of the flow meters. For example, assuming that the flow testing system provided in the embodiment of the present application includes three parallel test pipelines, and the three parallel test pipelines are of DN15, DN25, and DN40 caliber specifications, respectively, and the three parallel test pipelines are respectively provided with flow meters corresponding to the calibers of the corresponding test pipelines, namely DN15, DN25, and DN40. Then, when the flow meter of DN25 caliber is to be tested, the first valve connected to the flow meter of DN25 caliber is opened, and the first valve connected to the flow meter of DN15 caliber and the first valve connected to the flow meter of DN40 caliber are closed. The flow calibration device calibrates the flow of the test medium that is about to flow into the test pipeline of DN15 caliber, and when the test medium flows into the test pipeline of DN15 caliber, the flowmeter thereon measures the test medium, thereby realizing the testing of the flow meter of DN15 caliber.

[0031] In an exemplary embodiment, Figure 3 As shown, the system further includes: a first temperature sensor 15; wherein the output end of the first temperature sensor 15 is connected to the input end of the flow rate verification device 12 through a connecting pipeline;

[0032] The first temperature sensor 15 is configured to obtain the temperature of the test medium flowing into the flow verification device 12 .

[0033] In an exemplary embodiment, Figure 4 As shown, the system further includes: a second temperature sensor 16; wherein the input end of the second temperature sensor 16 is connected to the output ends of the plurality of parallel test pipelines through a connecting pipeline, and the output end of the second temperature sensor 16 is connected to the input end of the temperature regulating unit 11 through a connecting pipeline;

[0034] The second temperature sensor 16 is configured to obtain the temperature of the test medium flowing out of any test pipeline.

[0035] In the disclosed embodiment, a temperature sensor is connected in series before the flow calibration device in the pipeline and after the flow meter to monitor the temperature of the medium, and the medium temperature at both ends of the flow calibration device and the flow meter is monitored, thereby achieving timely understanding of the medium temperature.

[0036] In an exemplary embodiment, Figure 5 As shown, an electric pump 17 is arranged at any position; wherein the electric pump 17 is connected to the system through a connecting pipeline;

[0037] The electric pump 17 is configured to pressurize the test medium in the connecting pipeline.

[0038] In an exemplary embodiment, Figure 6 As shown, the system further includes: a second valve 18; wherein the second valve is connected to the system through a connecting pipeline, and the connecting pipeline where the second valve 18 is located is arranged in parallel with the connecting pipeline where the electric pump 17 is located;

[0039] The second valve 18 is configured to allow the test medium to pass through the connecting pipeline when it is closed.

[0040] When the second valve 18 is closed, the test medium passes through the electric pump 17, and the electric pump 17 adds power to the flow of the medium.

[0041] In an exemplary embodiment, Figure 7 As shown, the system further includes: a third valve 19 disposed on the connecting pipeline where the electric pump is located; wherein the third valve 19 is disposed in front of the electric pump according to the flow direction of the test medium;

[0042] The third valve 19 is configured to allow the test medium to pass through the connecting pipeline and be input into the electric pump 17 when it is opened.

[0043] When the second valve 18 is closed and the third valve 19 is opened, the test medium passes through the connecting pipeline where the electric pump 17 is located, thereby increasing the power of the medium flow; when the second valve 18 is opened and the third valve 19 is closed, the test medium passes through the connecting pipeline where the second valve 18 is located.

[0044] In an exemplary embodiment, the second valve includes: a through valve, and the third valve includes: a bypass valve.

[0045] In an exemplary embodiment, the system further comprises: a pressure sensor disposed at any position; wherein the pressure sensor is connected to the system via a connecting pipeline;

[0046] The temperature sensor, the pressure sensor, the first valve, the second valve, the third valve, the electric pump, the flow meter, the flow calibration device, the connecting pipeline, and the test pipeline are all provided with corresponding insulation layers.

[0047] The equipment materials in the flow calibration device or flow meter pipeline are generally made of metal, which has good thermal conductivity, resulting in relatively weak thermal insulation performance, making it difficult to meet the high and low temperature insulation requirements. Moreover, the equipment on the flow test pipeline is mostly irregular in shape and needs to be frequently disassembled or regularly inspected, and cannot be wrapped or coated with ordinary insulation materials. In order to minimize the change of medium heat energy and maintain the temperature of the medium in the pipeline, it is necessary to customize high and low temperature resistant, corrosion resistant, fireproof insulation layers or detachable insulation clothes according to the shape of the equipment, which are suitable for pipelines of different shapes and irregular equipment to isolate the surface of the equipment from the ambient gas.

[0048] In an exemplary embodiment, the temperature sensor, the pressure sensor, the first valve, the second valve, the third valve, the electric pump, the flow meter, the flow calibration device, the connecting pipeline, and the insulation layer provided outside the test pipeline are all adapted to the size of their corresponding objects and can be detachably connected to their corresponding objects.

[0049] Conventional laboratories are limited by deployment difficulties and maintenance costs. They are unable to fully enclose and insulate pipelines and do not have the experimental conditions for medium temperature testing. During flow meter calibration or testing, the medium temperature depends on the ambient temperature inside the laboratory during the test, and the medium temperature cannot be regulated.

[0050] The present disclosure also provides a flow rate testing system. Figure 8 As shown, it includes a temperature regulating unit, a through valve, a bypass valve and a pump, front-end and rear-end temperature sensors, a pressure sensor, an exhaust valve, parallel test pipe sections and valves of multiple calibers and other connecting pipelines. The flow test system can achieve the following purposes;

[0051] a) The temperature of the medium is controlled by the temperature adjustment unit and the temperature sensor.

[0052] The temperature adjustment unit can heat or cool the medium. A temperature sensor is connected in series before the flow calibration device and after the measured flow meter in the pipeline to monitor the temperature of the medium. The flow calibration device and the flow meter are monitored before and after to ensure that the medium temperature at the test point can meet the requirements.

[0053] By observing the medium temperature indication displayed on the temperature sensor, manually adjust the temperature control unit to heat or cool the medium, let the medium circulate continuously in the pipeline, and control the medium temperature to stabilize and meet the test requirements.

[0054] b) Control the medium flow and monitor the medium pressure through pumps and pressure sensors.

[0055] The temperature regulating unit usually has a certain pressure at the medium outlet. Open the through valve in the pipeline, close the bypass valve, and observe the medium flow on the measured flow meter or flow calibration device to see if it meets the test requirements.

[0056] If the medium flow rate in the pipeline is small and the output pressure of the temperature control unit itself is insufficient, close the through valve, open the bypass valve, and start the pump to increase the power of the medium flow. By accelerating the circulation of the medium, the medium temperature can quickly reach stability.

[0057] c) When using a temperature regulating unit to heat or cool the medium, in order to reduce the impact of the ambient temperature on the temperature of the medium in the pipeline, a flame-retardant, corrosion-resistant customized insulation layer or detachable insulation clothing is installed on the outside of the pipeline, temperature sensor, pressure sensor, valve, pump, measured flow meter, flow calibration device and other equipment.

[0058] Pipelines, temperature sensors, pressure sensors, valves, flow meters, flow calibration devices and other equipment are generally made of metal, which has good thermal conductivity, resulting in relatively weak thermal insulation performance, making it difficult to meet high and low temperature insulation requirements. In addition, the equipment is mostly shaped and needs to be frequently disassembled or regularly inspected, so it is impossible to use ordinary thermal insulation materials for wrapping or coating.

[0059] In order to minimize the change of medium heat energy and maintain the medium temperature in the pipeline, it is necessary to customize high and low temperature resistant, corrosion resistant, fireproof insulation layer or detachable insulation clothing according to the shape of the equipment, which is suitable for pipelines and special-shaped equipment of different shapes to isolate the equipment surface from the ambient gas. At the same time, it can be reused after the equipment is disassembled or repaired, without wasting insulation materials.

[0060] d) Connect multiple caliber pipelines in parallel in the test pipe section, and connect flowmeters and valves of different calibers to pipelines of corresponding calibers. When a flowmeter of a certain caliber needs to be tested, open the valve on the corresponding pipeline and close the valves on other pipelines.

[0061] Use the flow calibration device to continuously test flow meters of different calibers. The flow meters can be connected to the corresponding pipelines according to the calibers and tested in sequence after assembly. This avoids repeated disassembly and assembly of pipelines and improves the efficiency of calibration or testing.

[0062] e) Before verification or testing, it is necessary to inject the medium into the pipeline, circulate the medium for a period of time, and open the exhaust valve to exhaust the pipeline and each device. When confirming that there is no gas discharged from the exhaust valve, close the exhaust valve. When switching between the straight-through valve and the bypass valve, or valves on pipelines of different diameters, it is also necessary to open the exhaust valve to exhaust to ensure that there is no gas in the pipeline.

[0063] In view of the test requirements of the medium temperature range in the flow meter calibration or test, the utility model provides a flow test device with controllable medium temperature, which solves at least one existing technical problem, including:

[0064] a) When the flow meter is calibrated or tested using a liquid flow calibration device, the flow test device can achieve medium temperature control and provide test conditions for the test;

[0065] b) Install flame-retardant, corrosion-resistant custom insulation layers or detachable insulation clothing on the outside of pipelines, temperature sensors, pressure sensors, valves, pumps, measured flow meters, flow calibration devices and other equipment to reduce the impact of ambient temperature on the temperature of the medium in the pipeline;

[0066] c) Pipelines of multiple diameters are connected in parallel in the test pipe section to meet the test requirements of flow meters of different diameters.

[0067] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "'mouth'-shaped structure" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0068] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0069] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be defined by the attached claims.

Claims

1. A flow testing system, characterized in that: The system comprises: a temperature regulating unit, a flow rate verification device, and a plurality of parallel test pipelines; wherein the temperature regulating unit is arranged in front of the flow rate verification device according to the flow direction of the test medium, the output end of the flow rate verification device is connected to the input end of the plurality of parallel test pipelines through a connecting pipeline, each test pipeline corresponds to a pipeline caliber, and is provided with a flow meter adapted to the caliber of the corresponding test pipeline; The temperature regulating unit is configured to heat or cool the test medium; The flow rate verification device is configured to verify the flow rate of the test medium that is about to flow into any test pipeline; The flow meter on each of the test pipelines is configured to measure the flow of the test medium in the test pipeline when the test medium flows through the test pipeline to which the flow meter belongs.

2. The system according to claim 1, characterized in that The system further comprises: a first valve disposed on each test line; The first valve on each of the test pipelines is configured to allow the test medium to pass through the corresponding test pipeline when opened.

3. The system according to claim 2, characterized in that The system further comprises: a first temperature sensor; wherein the output end of the first temperature sensor is connected to the input end of the flow rate verification device via a connecting pipeline; The first temperature sensor is configured to obtain the temperature of the test medium flowing into the flow calibration device.

4. The system according to claim 3, characterized in that The system further includes: a second temperature sensor; wherein the input end of the second temperature sensor is connected to the output ends of the plurality of parallel test pipelines through a connecting pipeline, and the output end of the second temperature sensor is connected to the input end of the temperature regulating unit through a connecting pipeline; The second temperature sensor is configured to obtain the temperature of the test medium flowing out of any test pipeline.

5. The system according to claim 4, characterized in that The system further comprises: an electric pump, wherein an input end of the electric pump is connected to an output end of the temperature regulating unit via a connecting pipeline; The electric pump is configured to pressurize the test medium in the connecting pipeline.

6. The system according to claim 5, characterized in that The system further comprises: a second valve; wherein the second valve is connected to the system via a connecting pipeline, and the connecting pipeline where the second valve is located is arranged in parallel with the connecting pipeline where the electric pump is located; The second valve is configured to allow the test medium to pass through the connecting pipeline when the second valve is closed.

7. The system according to claim 6, characterized in that The system further comprises: a third valve disposed on the connecting pipeline where the electric pump is located; wherein the third valve is disposed in front of the electric pump according to the flow direction of the test medium; The third valve is configured to allow the test medium to pass through the connecting pipeline and be input into the electric pump when it is opened.

8. The system according to claim 7, characterized in that The second valve includes: a through valve, and the third valve includes: a bypass valve.

9. The system according to claim 7 or 8, characterized in that: The system further comprises: a pressure sensor arranged at any position; wherein the pressure sensor is connected to the system via a connecting pipeline; The pressure sensor is configured to obtain the pressure of the test medium in the connecting pipeline; The temperature sensor, the pressure sensor, the first valve, the second valve, the third valve, the electric pump, the flow meter, the flow calibration device, the connecting pipeline, and the test pipeline are all provided with corresponding insulation layers.

10. The system according to claim 9, characterized in that The temperature sensor, the pressure sensor, the first valve, the second valve, the third valve, the electric pump, the flow meter, the flow calibration device, the connecting pipeline, and the insulation layer arranged outside the test pipeline are all adapted to the size of their corresponding objects and can be detachably connected to their corresponding objects.

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