Flowmeter durability test device

Abstract

The utility model provides a durability test device for a flow meter. The durability test device comprises a ventilation pressurization channel and a gas circulation channel, the ventilation pressurization channel is provided with a high-pressure gas exhaust port, the gas circulation channel comprises a main channel and a plurality of branch channels, the main channel is communicated with the high-pressure gas exhaust port, and a gas pressurization assembly is arranged on the ventilation pressurization channel and used for pressurizing gas entering the ventilation pressurization channel. The compressed high-pressure gas is discharged into the gas circulation channel; a high-pressure gas driving piece is arranged on the gas circulating channel; the high-pressure gas driving part is used for driving the high-pressure gas entering the gas circulation channel to flow in the preset direction. The high-pressure environment in actual use can be simulated, and a durability test is provided for the flowmeter.

Description

Technical Field

[0001] The present application relates to the field of testing devices, and in particular to a flow meter durability testing device. Background Art

[0002] A flow meter is an instrument for measuring fluid flow. It is installed in a pipeline to record the flow rate. It has the advantages of a large flow range, high accuracy, and a wide range of applications.

[0003] In order to test the working condition of the flow meter under normal pressure and improve the measurement accuracy of the flow meter, a durability test device will be set up to test the flow meter.

[0004] However, as the use of flowmeters increases, parameters such as working pressure and flow range are also increasing. Existing flowmeters are mostly used in high-pressure environments, and existing flowmeter durability test devices are usually flowmeter durability test devices under normal pressure conditions, which cannot simulate the durable operation state of flowmeters under high-pressure environments. Utility Model Content

[0005] The present application provides a flow meter durability test device, which is used to solve the problem that the existing flow meter cannot simulate the durable operation state of flow meters of different calibers under different flow and high pressure environments at the same time.

[0006] The present application provides a flow meter durability test device, which is used to perform a durability test on a flow meter to be tested, and the flow meter durability test device includes a ventilation and pressurization channel and a gas circulation channel; the ventilation and pressurization channel has a high-pressure gas exhaust port, and the gas circulation channel includes a main channel and multiple branch channels, the main channel is connected to the high-pressure gas exhaust port, and the multiple branch channels are used to install the flow meter to be tested; a gas pressurization component is provided on the ventilation and pressurization channel, and the gas pressurization component is used to pressurize the gas entering the ventilation and pressurization channel and discharge the compressed high-pressure gas into the gas circulation channel; a high-pressure gas driving component is provided on the gas circulation channel, and the high-pressure gas driving component is used to drive the high-pressure gas entering the gas circulation channel to flow along a preset direction.

[0007] In the above-mentioned flow meter durability test device, optionally, the gas circulation channel is an annular channel; multiple branches are connected in parallel with each other, the first ends of multiple branches are connected to the first end of the main channel, and the second ends of multiple branches are connected to the second end of the main channel; at least a part of the branches are provided with a flow meter mounting seat, and the flow meter mounting seat is used to install the flow meter to be tested; the flow rates on at least a part of the branches are not equal.

[0008] In the above-mentioned flow meter durability test device, optionally, the gas pressurization component includes a gas pressurization member and a gas buffer member, the gas pressurization member is arranged on the ventilation pressurization channel, and the gas buffer member is arranged between the gas pressurization member and the high-pressure gas exhaust port; the gas pressurization member is used to pressurize the gas entering the ventilation pressurization channel; and the gas buffer member is used to store compressed high-pressure gas.

[0009] In the above flow meter durability test device, optionally, it also includes a temperature monitoring component and a pressure monitoring component, the temperature monitoring component is used to monitor the gas temperature parameters of the main channel, and the pressure monitoring component is used to monitor the gas temperature and pressure parameters of the main channel.

[0010] In the above flow meter durability test device, it is optional that each branch channel includes pipes of different diameters connected in parallel to each other, which are used to adapt to flow meters of different calibers in each branch channel, so as to test flow meters of different calibers.

[0011] In the above-mentioned flow meter durability test device, it is optional that a first branch control valve and a second branch control valve are provided on each branch, and along the flow direction of the fluid, the first branch control valve and the second branch control valve are respectively provided upstream and downstream of the flow meter mounting seat; the first branch control valve and the second branch control valve are used to control the flow of each branch.

[0012] In the above-mentioned flow meter durability test device, optionally, a filter is provided on the main channel, and the filter is located upstream or downstream of each branch channel along the flow direction of the fluid; and / or, the flow meter durability test device also includes a vent control valve, and the second end of the main channel is connected to the external environment through the vent control valve.

[0013] In the above-mentioned flow meter durability test device, it is optional to further include a first control valve and a first cut-off valve, which are installed between the gas pressurizing component and the gas buffer component; the first control valve is used to control the flow rate of the output gas of the gas pressurizing component, and the first cut-off valve is used to control the flow or cutoff of the gas inside the ventilation pressurization channel.

[0014] In the above-mentioned flow meter durability test device, it is optional to further include a second control valve, a third control valve and a second cut-off valve, the second control valve, the second cut-off valve and the third control valve are installed in sequence between the gas buffer and the main road, the second control valve is used to control the flow rate of the output gas of the gas buffer, the third control valve is used to control the flow rate output to the main road through the gas buffer, and the second cut-off valve is used to control the flow or cutoff of the gas inside the channel between the gas buffer and the main road.

[0015] In the above-mentioned flow meter durability test device, optionally, it also includes a fourth control valve and a safety valve, the gas buffer is connected to an auxiliary gas pipeline, the gas buffer is connected to the external environment through the auxiliary gas pipeline, and the fourth control valve and the safety valve are arranged in parallel on the auxiliary gas pipeline; the fourth control valve is used to open when the pressure in the gas buffer exceeds the preset pressure, and the safety valve is used to automatically open when the fourth control valve fails and the pressure in the gas buffer continues to exceed the preset pressure.

[0016] In the flow meter durability test device, it is optional that each branch channel is provided with a pipeline expansion compensator, and the pipeline expansion compensator is installed upstream or downstream of the flow meter mounting seat along the flow direction of the fluid. In this way, when the temperature changes and causes the pipeline to expand and contract and generate stress, the pipeline expansion compensator can expand and contract to compensate, absorb the dimensional change of the pipeline, and offset the stress.

[0017] The present application provides a flow meter durability test device, including a ventilation pressurization channel, a gas circulation channel, a gas pressurization assembly and a high-pressure gas drive, which can enable the flow meter to operate durably under the expected pressure. At the same time, the present application helps to conduct durability tests on the flow meter under different flow rates and different pressure environments. The simulation results are more accurate, which helps to improve the measurement accuracy of the flow meter.

[0018] The structure of the present application and its other practical purposes and beneficial effects will be more clearly understood through the description of the preferred embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] Figure 1 Figure 1. Flow meter durability test device diagram provided for this application;

[0021] Figure 2 Schematic diagram of gas flow direction in the flow meter durability test device provided in this application.

[0022] Reference numerals:

[0023] 100-Flowmeter durability test device;

[0024] 110-ventilation and pressurization channel; 111-gas inlet; 112-high-pressure gas outlet;

[0025] 113- auxiliary gas pipeline; 120- gas circulation channel; 121- main road;

[0026] 122- branch channel; 123- first control valve of branch channel; 124- second control valve of branch channel;

[0027] 125-filter; 126-pipeline expansion compensator; 130-gas pressurizing component;

[0028] 131-gas pressurizing component; 132-gas buffer component; 140-high-pressure gas driving component;

[0029] 150-temperature monitoring component; 160-pressure monitoring component; 170-venting channel;

[0030] 171-vent control valve; 180-first control valve; 181-second control valve;

[0031] 183-third control valve; 184-fourth control valve; 185-first cut-off valve;

[0032] 186-second cut-off valve; 187-safety valve; 190-flow meter mounting seat;

[0033] 200-Flow meter to be tested.

[0034] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0035] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0036] The inventor of the present application found in the actual research process that a flow meter is an instrument for measuring fluid flow, which can be installed in a pipeline to record the flow rate flowing in a selected time interval, and has the advantages of a large flow range, high accuracy, and a wide range of applications. Commonly used flow meters can be divided into liquid flow meters and gas flow meters according to the medium.

[0037] With the development of technology, the requirements for the accuracy and range of flow meter measurement are getting higher and higher. In order to test the working condition of the flow meter under normal pressure and improve the measurement accuracy of the flow meter, it is necessary to set up a durability test device to test the flow meter, that is, to run the flow meter at the corresponding maximum flow rate for a certain period of time within the normal pressure range, and compare the deviation before and after the test with the maximum allowable error of the flow meter, so as to predict whether the service life of the flow meter can meet expectations.

[0038] However, as the use of flowmeters increases, parameters such as working pressure and flow range are also increasing. Existing flowmeters are mostly used in high-pressure environments, and existing flowmeter durability test devices are usually flowmeter durability test devices under normal pressure conditions. They cannot simulate the durable operation state of the flowmeter under high-pressure environments, and thus cannot perform durability tests on flowmeters under high-pressure environments.

[0039] In view of this, the present application provides a flow meter durability test device, which can enable the flow meter to operate durably under the expected pressure. At the same time, the present application helps to conduct durability tests on flow meters of different calibers under different flow rates and different pressure environments. The simulation results are more accurate, which helps to improve the measurement accuracy of the flow meter.

[0040] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0041] Refer to the attached Figure 1 and attached Figure 2 The present application provides a flow meter durability test device. The flow meter durability test device 100 may include a ventilation and pressurization channel 110 and a gas circulation channel 120. The ventilation and pressurization channel 110 may have a high-pressure gas exhaust port 112. The gas circulation channel 120 may include a main channel 121 and multiple branch channels 122; the main channel 121 is connected to the high-pressure gas exhaust port 112.

[0042] In the embodiment of the present application, a gas pressurizing assembly 130 may be provided on the ventilation pressurizing channel 110, and the gas pressurizing assembly 130 is used to pressurize the incoming gas and discharge the compressed high-pressure gas into the gas circulation channel 120. A high-pressure gas driving member 140 may be provided on the gas circulation channel 120, and the gas circulation channel 120 is used to install the flow meter 200 to be detected.

[0043] In the embodiment of the present application, the main road 121 may be a ring channel.

[0044] It can be understood that the ventilation pressurization channel 110 is a channel for providing high-pressure gas to the gas circulation channel 120 through the gas pressurization component 130, and the gas circulation channel 120 is a channel for the circulation of high-pressure gas.

[0045] The testing process of the flow meter durability test device provided in this application is as follows:

[0046] The gas enters the ventilation pressurization channel 110 through the gas pressurization component 130, the gas pressurization component 130 pressurizes the gas and discharges the compressed high-pressure gas into the gas circulation channel 120. When the pressure in the ventilation pressurization channel 110 reaches a preset pressure, the gas pressurization component 130 is closed, and the high-pressure gas driving component 140 drives the high-pressure gas entering the gas circulation channel 120 to flow in a preset direction. When the durability test of the flow meter 200 to be tested is completed, the high-pressure gas is discharged through the gas circulation channel 120.

[0047] It should be noted that durability testing is a test conducted to determine the service life of a product under specified use and maintenance conditions, and to predict or verify weak links and dangerous parts of the structure. Durability testing generally takes longer than reliability testing. Through durability testing, problems with the reliability of parts in product design and manufacturing can be found in order to improve the design or process level.

[0048] In the embodiment of the present application, there is no limitation on the value of the preset pressure, and it can be set according to the actual situation.

[0049] In the embodiment of the present application, the "preset direction" in the flow of high-pressure gas in the preset direction is not limited. For example, the preset direction may be a clockwise direction, that is, the high-pressure gas flows in the gas circulation channel 120 in a clockwise direction; or the preset direction may be a counterclockwise direction, that is, the high-pressure gas flows in the gas circulation channel 120 in a counterclockwise direction. This embodiment does not limit this.

[0050] For example, in this embodiment, the high pressure gas can be Figure 2 Flow in the direction of arrow A.

[0051] In the embodiment of the present application, the type of the high-pressure gas driving member 140 is not limited. For example, the high-pressure gas driving member 140 may be a high-pressure blower. The high-pressure blower may select different pressure gears and directions to adjust the fluid pressure and the flow direction of the fluid in the gas circulation channel 120.

[0052] As an optional implementation, the ventilation pressurization channel 110 may have a gas inlet 111 connected to the external environment, and the gas inlet end of the gas pressurization component 130 may be connected to the gas inlet 111, which is not limited in this embodiment.

[0053] As an optional implementation, the present embodiment does not limit the way in which the high-pressure gas is discharged through the gas circulation channel 120. For example, under the action of high pressure, the gas can directly rush out of the gas circulation channel 120 to the external environment; or, the gas circulation channel 120 can have a communication port connected to the external environment, and the high-pressure gas is discharged from the gas circulation channel 120 through the communication port. This is not limited in the present embodiment.

[0054] It should be noted that the external environment here is mainly the atmospheric environment.

[0055] As an optional implementation, refer to Figure 1 and Figure 2 As shown, the multiple branch roads 122 are connected in parallel, the first ends of the multiple branch roads 122 are connected to the first end of the main road 121, and the second ends of the multiple branch roads 122 are connected to the second end of the main road 121.

[0056] In the embodiment of the present application, there is no limitation on the number of branches 122. For example, the number of branches 122 may include two, two branches 122 are connected in parallel; or the number of branches 122 may include five, five branches 122 are connected in parallel; the number of branches 122 may include more, more branches 122 are connected in parallel. In this embodiment, refer to Figure 1 and Figure 2 As shown, five branch roads 122 are mainly used as an example for explanation.

[0057] In the embodiment of the present application, at least a portion of the branch channels 122 may be provided with a flow meter mounting seat 190, and the flow meter mounting seat 190 is used to mount the flow meter 200 to be tested. In this way, the flow meter mounting seat 190 can provide installation and assembly for the flow meter 200 to be tested, thereby ensuring the assembly stability of the flow meter 200 to be tested and ensuring the accuracy of the flow meter 200 to be tested during the testing process.

[0058] In the embodiment of the present application, there is no limitation on the number and installation positions of the flow meter mounting base 190 and the flow meter 200 to be detected, and they can be specifically set according to actual conditions.

[0059] In the embodiment of the present application, the flow rates on at least some of the branch channels 122 are different. In this way, the durability test of the flow meter 200 to be tested can be performed under different flow environments, thereby achieving that multiple flow meters 200 to be tested can operate under different flow rates.

[0060] As an optional implementation, refer to Figure 1As shown, the gas pressurizing component 130 may include a gas pressurizing member 131 and a gas buffer member 132. The gas pressurizing member 131 is arranged on the ventilation pressurizing channel 110, the air inlet end of the gas pressurizing member 131 is connected to the gas inlet 111, and the gas buffer member 132 is connected between the gas pressurizing member 131 and the high-pressure gas exhaust port.

[0061] The gas pressurizing member 131 is used to pressurize the gas entering through the gas inlet 111 and deliver the pressurized gas to the gas buffer 132; the gas buffer 132 is used to store the compressed high-pressure gas. In this way, the pressurized fluid can be further adjusted and delivered to the gas buffer 132, thereby improving the adaptability of the gas buffer 132 to the fluid.

[0062] In an embodiment of the present application, the gas pressurizing component 131 may be an air compressor and / or a hydraulic press, which can provide a stable pressurized fluid to the flow meter durability test device; the gas buffer component 132 may be a closed storage container with a pressure regulating function, which is convenient for storing and delivering pressurized fluid to the main road 121. Exemplarily, the gas buffer component 132 may be a buffer tank.

[0063] As an optional implementation, refer to Figure 1 As shown, a temperature monitoring component 150 and a pressure monitoring component 160 may also be included. The temperature monitoring component 150 is used to monitor the gas temperature parameters of the main channel 121 , and the pressure monitoring component 160 is used to monitor the gas pressure parameters of the main channel 121 .

[0064] Specifically, the temperature monitoring component 150 can be a temperature meter, specifically at least one of a resistance temperature meter, a gas temperature meter, a radiation temperature meter, and an infrared thermometer; the pressure monitoring component 160 can be a pressure gauge, specifically at least one of a vacuum pressure gauge and a high pressure gauge.

[0065] As an optional implementation, each branch channel 122 includes pipes of different diameters connected in parallel, which are used to adapt to the flow meters 200 of different calibers to be tested in each branch channel 122, so as to test the flow meters 200 of different calibers to be tested. In this way, the flow meters 200 of different calibers to be tested can be tested at the same time, which improves the test efficiency.

[0066] Specifically, the diameter of each pipeline can be selected from at least one of DN50, DN80, DN100, DN150, and DN200, and the diameter of at least one pipeline can be the same as or different from the diameter of other pipelines. In this way, flow meters 200 of different calibers to be tested are selected according to pipelines of different diameters, thereby expanding the scope of application of the test device.

[0067] As an optional implementation, refer to Figure 1As shown, each branch channel 122 may further include a first branch channel control valve 123 and a second branch channel control valve 124. Along the flow direction of the fluid, the first branch channel control valve 123 and the second branch channel control valve 124 are respectively arranged upstream and downstream of the flow meter mounting seat 190;

[0068] The first branch channel control valve 123 and the second branch channel control valve 124 are used to control the flow rate of each branch channel 122. In this way, the flow rate of different branch channels 122 can be adjusted by adjusting the opening of the first branch channel control valve 123 and the second branch channel control valve 124 arranged upstream and downstream, and the flow meters 200 to be tested with different calibers can be tested under different flow rates, thereby improving the test efficiency.

[0069] Specifically, when the flowmeter 200 to be tested is arranged in the branch channel 122, the opening and closing of the first branch control valve 123 and the second branch control valve 124 can be controlled according to the installation status of the flowmeter 200 to be tested on the branch channel 122. If a flowmeter 200 to be tested is arranged on a branch channel 122, the first branch control valve 123 and the second branch control valve 124 upstream and downstream thereof are opened, and the first branch control valve 123 and the second branch control valve 124 on other branches 122 are closed; if the flowmeter 200 to be tested is arranged on all branches 122, the first branch control valve 123 and the second branch control valve 124 on all branches 122 are opened. In this way, the fluid flow of each branch channel 122 can be controlled according to whether the flowmeter 200 to be tested is installed in each branch channel 122.

[0070] Specifically, the branch channel first control valve 123 and the branch channel second control valve 124 may be ball valves and / or butterfly valves, and the control type may be automatic and / or manual.

[0071] As an optional implementation, refer to Figure 1 As shown, the main channel 121 may further include a filter 125. Along the flow direction of the fluid, the filter 125 may be located upstream or downstream of each branch channel 122. In this way, the filter 125 can filter out impurities generated during the test.

[0072] Specifically, the filter 125 can be disposed upstream of the branch channel 122, and can filter the fluid in the main channel 121 before inputting it into the branch channel 122, thereby improving the purity of the fluid and reducing the test error. The filter 125 can also be disposed downstream of the branch channel 122. This embodiment does not limit this.

[0073] In the embodiment of the present application, the flow meter durability test device may further include a vent channel 170 and a vent control valve 171. The second end of the main channel 121 is connected to the external environment through the vent channel 170. The vent control valve 171 is installed in the vent channel 170. The vent channel 170 and the vent control valve 171 can release the fluid from the main channel 121 after the test.

[0074] It should be noted that, in the embodiment of the present application, the vent channel 170 may not be provided. Exemplarily, the vent control valve 171 may be directly installed in the gas circulation channel 120. Exemplarily, the vent control valve 171 may be a three-way valve, one of the interfaces of which is connected to the outside.

[0075] As an optional embodiment, the flow meter durability test device may further include a first control valve 180 and a first shut-off valve 185, which are installed between the gas pressurizing member 131 and the gas buffer member 132. In this way, it is convenient to control the gas output of the gas pressurizing member 131. Specifically, the first control valve 180 is used to control the flow rate of the output gas of the gas pressurizing member 131, and the first shut-off valve 185 is used to control the flow or cut-off of the gas inside the ventilation pressurization channel 110.

[0076] In the embodiment of the present application, there is no limitation on the type, number, etc. of the first control valve 180 and the first shut-off valve 185. For example, the first control valve 180 may be a manual ball valve, and the first shut-off valve 185 may be a ball valve, a plug valve, a butterfly valve, or a diaphragm valve. This embodiment does not limit this.

[0077] As an optional implementation, refer to Figure 1 As shown, the flow meter durability test device may further include a second control valve 181 , a third control valve 183 , and a second shut-off valve 186 . The second control valve 181 , the second shut-off valve 186 , and the third control valve 183 are sequentially installed between the gas buffer 132 and the main channel 121 .

[0078] Specifically, the second control valve 181 is used to control the flow rate of the output gas of the gas buffer 132, the third control valve 183 is used to control the flow rate output to the main channel 121 through the gas buffer 132, and the second cut-off valve 186 is used to control the flow or cut-off of the gas inside the channel between the gas buffer 132 and the main channel 121.

[0079] In some embodiments, when the second control valve 181 fails to work properly, the third control valve 183 can control the gas buffer 132. In this way, the situation in which the test device cannot work properly due to the failure of the gas buffer 132 is avoided.

[0080] Specifically, the second shut-off valve 186 also has a pressure regulating function, which can adjust the fluid pressure output from the gas buffer 132, monitor the fluid pressure in the ventilation and pressurization channel 110 through the pressure monitoring component 160, and stop the fluid output of the gas buffer 132 after the fluid pressure in the ventilation and pressurization channel 110 reaches the test set value. In this way, the continuous flow supply of the gas pressurization component 131 is not required, saving the test cost.

[0081] As an optional implementation, refer to Figure 1 As shown, the flow meter durability test device can also include a fourth control valve 184 and a safety valve 187. The gas buffer 132 can be connected to an auxiliary gas pipeline 113. The gas buffer 132 is connected to the external environment through the auxiliary gas pipeline 113. The fourth control valve 184 and the safety valve 187 are arranged in parallel on the auxiliary gas pipeline 113.

[0082] Specifically, the fourth control valve 184 is used to open when the pressure in the gas buffer 132 exceeds the preset pressure, and the safety valve 187 is used to automatically open when the fourth control valve 184 fails and the pressure in the gas buffer 132 continues to increase and exceeds the preset pressure.

[0083] In this way, when the pressure in the gas buffer 132 continues to increase and exceeds the preset pressure, the fourth control valve 184 or the safety valve 187 is opened in time, and the pressure is released through the auxiliary gas pipeline 113, which is beneficial to ensure that the gas buffer 132 is in a suitable pressure range, avoid the risk of safety problems caused by excessive pressure in the gas buffer 132, ensure the safety performance of the gas buffer 132, further ensure the safety performance of the flow meter durability test device 100, and ensure the safety of the operator.

[0084] As an optional implementation, refer to Figure 1 As shown, each branch channel 122 may further include a pipeline expansion compensator 126, which is installed upstream or downstream of the flow meter 200 to be detected in each branch channel 122 along the flow direction of the fluid. In this way, when the temperature changes and causes the pipeline to expand and contract and generate stress, the pipeline expansion compensator 126 can expand and contract to compensate, absorb the size change of the pipeline, and offset the stress change.

[0085] Specifically, the pipeline expansion compensator 126 can compensate for at least one of the axial, lateral and angular displacements of the pipeline.

[0086] The flow meter durability test device provided in the embodiment of the present application includes a gas channel component, a gas pressurizing component, a high-pressure gas driving component and a monitoring component. The flow meter can be operated for a long time under the expected pressure. At the same time, the present application is helpful to perform durability tests on flow meters of different calibers under different flow rates and different pressure environments, and the simulation results are more accurate, thereby helping to improve the measurement accuracy of the flow meter.

[0087] It can be understood that, since the flow meter durability test device of the present application adopts the technical solution of the above embodiment, it at least has the beneficial effects brought by the technical solution of the above embodiment, which will not be described one by one here.

[0088] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0089] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A flow meter durability test device, used for performing a durability test on a flow meter to be tested, characterized in that: The flow meter durability test device includes a ventilation and pressurization channel and a gas circulation channel; The ventilation pressurization channel has a high-pressure gas outlet, and the gas circulation channel includes a main channel and a plurality of branch channels, the main channel is connected to the high-pressure gas outlet, and the plurality of branch channels are used to install a flow meter to be detected; The ventilation and pressurization channel is provided with a gas pressurization component, and the gas pressurization component is used to pressurize the gas entering the ventilation and pressurization channel and discharge the compressed high-pressure gas into the gas circulation channel; The gas circulation channel is provided with a high-pressure gas driving member, and the high-pressure gas driving member is used to drive the high-pressure gas entering the gas circulation channel to flow along a preset direction.

2. The flow meter durability test device according to claim 1, characterized in that: The gas circulation channel is an annular channel; The plurality of branch roads are connected in parallel with each other, the first ends of the plurality of branch roads are connected with the first end of the main road, and the second ends of the plurality of branch roads are connected with the second end of the main road; At least a portion of the branch channels are provided with flow meter mounting seats, and the flow meter mounting seats are used to mount the flow meter to be tested; The flow rates on at least some of the branch channels are unequal.

3. The flow meter durability test device according to claim 1, characterized in that: The gas pressurizing component comprises a gas pressurizing member and a gas buffer member, wherein the gas pressurizing member is arranged on the ventilation pressurizing passage, and the gas buffer member is connected between the gas pressurizing member and the high-pressure gas discharge port; The gas pressurizing component is used to pressurize the gas entering the ventilation pressurizing channel; the gas buffer component is used to store the compressed high-pressure gas.

4. The flow meter durability test device according to claim 3, characterized in that: It also includes a temperature monitoring component and a pressure monitoring component. The temperature monitoring component is used to monitor the gas temperature parameters of the main channel, and the pressure monitoring component is used to monitor the gas pressure parameters of the main channel.

5. The flow meter durability test device according to any one of claims 2 to 4, characterized in that: A first branch control valve and a second branch control valve are provided on each of the branch channels. Along the flow direction of the gas, the first branch control valve and the second branch control valve are respectively arranged upstream and downstream of the flow meter mounting seat; the first branch control valve and the second branch control valve are used to control the flow of each of the branch channels.

6. The flow meter durability test device according to claim 2, characterized in that: A filter is provided on the main channel, and along the flow direction of the gas, the filter is located upstream or downstream of each branch channel; And / or, the flow meter durability test device further comprises a vent control valve, and the second end of the main channel is connected to the external environment via the vent control valve.

7. The flow meter durability test device according to claim 3 or 4, characterized in that: It also includes a first control valve and a first cut-off valve, wherein the first control valve and the first cut-off valve are installed between the gas pressurizing member and the gas buffer member; The first control valve is used to control the flow rate of the output gas of the gas pressurizing component, and the first cut-off valve is used to control the flow or cut-off of the gas inside the ventilation pressurizing channel.

8. The flow meter durability test device according to claim 3 or 4, characterized in that: It also includes a second control valve, a third control valve and a second cut-off valve, wherein the second control valve, the second cut-off valve and the third control valve are sequentially installed between the gas buffer and the main road; The second control valve is used to control the flow rate of the output gas of the gas buffer, the third control valve is used to control the flow rate output to the main channel through the gas buffer, and the second cut-off valve is used to control the flow or cut-off of the gas between the gas buffer and the main channel.

9. The flow meter durability test device according to claim 3 or 4, characterized in that: It also includes a fourth control valve and a safety valve, the gas buffer is connected to an auxiliary gas pipeline, the gas buffer is connected to the external environment through the auxiliary gas pipeline, and the fourth control valve and the safety valve are arranged in parallel on the auxiliary gas pipeline; The fourth control valve is used to open when the pressure in the gas buffer exceeds a preset pressure, and the safety valve is used to automatically open when the fourth control valve fails and the gas buffer continues to be pressurized and exceeds the preset pressure.

10. The flow meter durability test device according to any one of claims 2 to 4, characterized in that: A pipeline expansion compensator is arranged on each branch channel, and along the flow direction of the fluid, the pipeline expansion compensator is installed upstream or downstream of the flow meter mounting seat.

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