Linked water tunnel test device and test method

Abstract

The present application discloses a linkage type water tunnel test device and test method, which includes a test pipeline, the test pipeline is used to install the test piece; an inlet regulating pipeline, the inlet regulating pipeline is connected to one end of the test pipeline, and is used to inject a liquid medium into the test pipeline, the inlet regulating pipeline includes an inlet regulating pipe section, the inlet regulating pipe section includes at least two inlet bifurcated sections arranged in parallel, and each inlet bifurcated section has a first opening control valve; an outlet regulating pipeline, the outlet regulating pipeline is connected to the other end of the test pipeline, and is used to discharge the liquid medium in the test pipeline, the outlet regulating pipeline includes an outlet regulating pipe section, the outlet regulating pipe section includes at least two outlet bifurcated sections arranged in parallel, and each outlet bifurcated section has a second opening control valve. The linkage type water tunnel test device and test method of the present application can provide a test environment with high accuracy and reliability.

Description

Technical Field

[0001] The present application belongs to the field of fluid mechanics testing technology, and in particular relates to a linkage water tunnel testing device and testing method. Background Art

[0002] In different fields such as water navigation and water conservancy projects, water tunnel devices are important test equipment for fluid mechanics properties. Water tunnel devices can simulate different water flow conditions to test ships, aircraft or hydraulic structures under different simulation environments.

[0003] When conducting tests using a water tunnel, the flow rate and pressure of the water flowing inside the tunnel are controlled to simulate different water flow environments. Current methods for controlling water flow typically involve directly controlling the water supply at the tunnel inlet, or installing a water flow regulating valve at the inlet to control the flow rate and pressure from the water supply to the tunnel inlet. However, this method of regulating the flow inside the tunnel has low control precision and is unable to simulate diverse and complex operating conditions, resulting in low test accuracy and reliability. Summary of the Invention

[0004] The present application provides a linkage water tunnel test device and test method, which can provide a test environment with high accuracy and reliability.

[0005] The present application provides a linkage water tunnel test device, which includes a test pipeline, which is used to install a test piece; an inlet regulating pipeline, which is connected to one end of the test pipeline and is used to inject a liquid medium into the test pipeline, and the inlet regulating pipeline includes an inlet regulating pipe section, and the inlet regulating pipe section includes at least two inlet branching sections arranged in parallel, and each inlet branching section has a first opening control valve; an outlet regulating pipeline, which is connected to the other end of the test pipeline and is used to discharge the liquid medium in the test pipeline, and the outlet regulating pipeline includes an outlet regulating pipe section, and the outlet regulating pipe section includes at least two outlet branching sections arranged in parallel, and each outlet branching section has a second opening control valve.

[0006] As above, the linked water tunnel test device, wherein at least two inlet branch sections include a first inlet branch section and a second inlet branch section, the inner diameter of the first inlet branch section is larger than the inner diameter of the second inlet branch section; and / or, at least two outlet branch sections include a first outlet branch section and a second outlet branch section, the inner diameter of the first outlet branch section is larger than the inner diameter of the second outlet branch section.

[0007] In the linkage water tunnel test device as described above, the inlet regulating pipeline also includes an inlet reducing pipe section, which is connected between the inlet regulating pipe section and the test pipeline, and the cross-sectional area of ​​the inlet reducing pipe section shows a decreasing trend along the direction from the inlet regulating pipe section to the test pipeline.

[0008] As shown in the above-mentioned linkage water tunnel test device, the outlet regulating pipeline also includes an outlet reducing pipe section, which is connected between the test pipeline and the outlet regulating pipe section, and the cross-sectional area of ​​the end of the outlet reducing pipe section close to the outlet regulating pipe section is larger than the cross-sectional area of ​​the end of the outlet regulating pipe section close to the test pipeline.

[0009] As shown in the above-mentioned linkage water tunnel test device, the outlet reducing pipe section includes a first reducing section, a pressure regulating section and a second reducing section connected in sequence along the direction from the test pipeline to the outlet regulating pipe section. The cross-sectional areas of the first reducing section and the second reducing section are both set in an increasing trend, and the cross-sectional area of ​​the pressure regulating section is set to be constant.

[0010] As described above, the linkage water tunnel test device, wherein the extension length of the first variable diameter section is smaller than the extension length of the second variable diameter section; and / or, the increasing trend of the cross-sectional area of ​​the first variable diameter section is smaller than the increasing trend of the cross-sectional area of ​​the second variable diameter section.

[0011] As shown in the above-mentioned linkage water tunnel test device, the inlet regulating pipeline also includes a rectifying pipe section, which is arranged between the inlet regulating pipe section and the inlet reducing pipe section. A rectifying structure is provided inside the rectifying pipe section for adjusting the smoothness of the liquid medium entering the inlet reducing pipe section.

[0012] As described above, the linkage water tunnel test device, wherein the inlet regulating pipeline also includes an inlet pipe section, the inlet pipe section is connected to the end of the inlet regulating pipe section away from the test pipeline, and the inlet pipe section has a first on-off control valve; the outlet regulating pipeline also includes an outlet pipe section, the outlet pipe section is connected to the end of the outlet regulating pipe section away from the test pipeline, and the outlet pipe section has a second on-off control valve.

[0013] As shown above, the linkage water tunnel test device further includes a control component, including a central control device and multiple driving components. The central control device and the multiple driving components are respectively communicated and connected, and the multiple driving components are connected to the first opening control valve, the second opening control valve, the first on-off control valve and the second on-off control valve to control the on-off and opening of the inlet regulating pipeline and the outlet regulating pipeline.

[0014] As shown in the above-mentioned linked water tunnel test device, the water tunnel test device also includes a sensor assembly. Sensor assemblies are provided at both ends of the test pipeline. The sensor assembly includes a flow rate sensor and a pressure sensor, which are respectively used to measure the flow rate and pressure of the liquid at both ends of the test pipeline.

[0015] On the other hand, the present application also provides a test method for a linkage water tunnel test device, wherein the test is conducted using the linkage water tunnel test device described above. The test method for the linkage water tunnel test device includes:

[0016] According to the test requirements of the test piece, set the target water flow parameters in the test pipeline;

[0017] Open the inlet regulating pipeline and the outlet regulating pipeline, and collect the actual water flow parameters in the test pipeline;

[0018] Calculate the deviation between the actual water flow parameters and the target water flow parameters;

[0019] According to the deviation value, adjusting at least one of a first opening control valve in the inlet regulating pipeline and a second opening control valve in the outlet regulating pipeline until the actual water flow parameter reaches the target water flow parameter;

[0020] Obtain the navigation status of the test piece in the test pipeline.

[0021] The test method of the linkage water tunnel test device as described above, wherein the step of adjusting at least one of a first opening control valve in an inlet regulating pipeline and a second opening control valve in an outlet regulating pipeline according to the deviation value until the actual water flow parameter reaches the target water flow parameter, includes:

[0022] Set the preset control algorithm;

[0023] Inputting the target water flow parameter and the deviation value into a preset control algorithm, the preset control algorithm generates a preset control signal according to the target water flow parameter and the deviation value;

[0024] Using a preset control signal to adjust at least one of the first opening control valve and the second opening control valve, and collecting real-time water flow parameters in the test pipeline;

[0025] The real-time water flow parameter is set as a feedback signal, and the feedback signal is input into a preset control algorithm, which generates a real-time control signal according to the feedback signal and the deviation value;

[0026] The real-time control signal is used to adjust at least one of the first opening control valve and the second opening control valve in real time until the actual water flow parameter reaches the target water flow parameter.

[0027] The linkage water tunnel test device of the present application includes a test pipeline, an inlet regulating pipeline and an outlet regulating pipeline. The test pipeline is used to install the test piece, and the inlet regulating pipeline and the outlet regulating pipeline are respectively connected to the two ends of the test pipeline, and are respectively used to inject liquid medium into the test pipeline and discharge the liquid medium in the test pipeline, so that the water flow environment inside the test pipeline can be simulated, and the test piece can operate in the simulated water flow environment to complete the test.

[0028] The inlet regulating pipeline includes an inlet regulating pipe section, which includes at least two inlet branching sections arranged in parallel, each of which has a first opening control valve, so that the opening in each inlet branching section can be adjusted. Under the multi-way regulation of at least two inlet branching sections arranged in parallel and the respective opening regulation functions, the water flow rate and pressure at the inlet end of the test pipeline are precisely controlled; the outlet regulating pipeline includes an outlet regulating pipe section, which includes at least two outlet branching sections arranged in parallel, each of which has a second opening control valve, so that the opening in each outlet branching section can be adjusted. Under the multi-way regulation of at least two outlet branching sections arranged in parallel and the respective opening regulation functions, the water flow rate and pressure at the outlet end of the test pipeline are precisely controlled. Therefore, the water flow at the inlet end and the outlet end of the test pipeline can be accurately controlled and regulated, thereby achieving precise control of the overall water flow environment in the test pipeline, and providing a test environment with high accuracy and reliability for the test of the test piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 This is a schematic diagram of the specific structure of the pipeline part of the linkage water tunnel test device according to an embodiment of the present application;

[0031] Figure 2 This is an overall schematic diagram of the linked water tunnel test device according to an embodiment of the present application;

[0032] Figure 3 A schematic diagram of a sensor assembly of a linked water tunnel test device according to an embodiment of the present application;

[0033] Figure 4 This is an overall flow chart of the test method of the linked water tunnel test device according to an embodiment of the present application;

[0034] Figure 5 This is a flow chart of the adjustment steps of the test method of the linked water tunnel test device according to an embodiment of the present application.

[0035] Description of Figure Numbers:

[0036] 1. Test pipeline;

[0037] 2. Inlet regulating pipeline; 21. Inlet regulating pipe section; 211. Inlet bifurcated section; 212. First opening control valve; 22. Inlet reducing pipe section; 23. Rectifying pipe section; 24. Inlet pipe section; 241. First on-off control valve;

[0038] 3. Outlet regulating pipeline; 31. Outlet regulating pipe section; 311. Outlet bifurcated section; 312. Second opening control valve; 32. Outlet reducing pipe section; 321. First reducing section; 322. Pressure regulating section; 323. Second reducing section; 33. Outlet pipe section; 331. Second on-off control valve;

[0039] 4. Control components; 41. Central control equipment; 42. Drive components;

[0040] 5. Sensor assembly; 51. Flow rate sensor; 52. Pressure sensor. DETAILED DESCRIPTION

[0041] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0042] like Figures 1 to 3 As shown, an embodiment of the present application provides a linkage water tunnel test device, which includes a test pipeline 1 for installing a test piece; an inlet regulating pipeline 2, which is connected to one end of the test pipeline 1 and is used to inject a liquid medium into the test pipeline 1, and the inlet regulating pipeline 2 includes an inlet regulating pipe section 21, which includes at least two inlet branching sections 211 arranged in parallel, and each inlet branching section 211 has a first opening control valve 212; an outlet regulating pipeline 3, which is connected to the other end of the test pipeline 1 and is used to discharge the liquid medium in the test pipeline 1, and the outlet regulating pipeline 3 includes an outlet regulating pipe section 31, which includes at least two outlet branching sections 311 arranged in parallel, and each outlet branching section 311 has a second opening control valve 312. The liquid medium is water, hereinafter collectively referred to as water flow.

[0043] In specific implementation, the linkage water tunnel test device of the present application includes a test pipeline 1, an inlet regulating pipeline 2 and an outlet regulating pipeline 3. The test pipeline 1 is used to install the test piece, and the inlet regulating pipeline 2 and the outlet regulating pipeline 3 are respectively connected to the two ends of the test pipeline 1, and are respectively used to inject liquid medium into the test pipeline 1 and discharge the liquid medium in the test pipeline 1, so that the water flow environment inside the test pipeline 1 can be simulated, and the test piece can operate in the simulated water flow environment to complete the test.

[0044] The inlet regulating pipeline 2 includes an inlet regulating pipe section 21, which includes at least two inlet branching sections 211 arranged in parallel. Each inlet branching section 211 has a first opening control valve 212, so that the opening in each inlet branching section 211 can be adjusted. Under the multi-way adjustment of at least two inlet branching sections 211 arranged in parallel and the respective opening adjustment effects, precise control of the water flow rate and pressure at the inlet end of the test pipeline 1 is achieved; the outlet regulating pipeline 3 includes an outlet regulating pipe section 31, which includes at least two outlet branching sections 311 arranged in parallel. Each outlet branching section 311 has a second opening control valve 312, so that the opening in each outlet branching section 311 can be adjusted. Under the multi-way adjustment of at least two outlet branching sections 311 arranged in parallel and the respective opening adjustment effects, precise control of the water flow rate and pressure at the outlet end of the test pipeline 1 is achieved. Therefore, the water flow at the inlet and outlet ends of the test pipeline 1 can be accurately controlled and adjusted, thereby achieving precise control of the overall water flow environment in the test pipeline 1, and providing a test environment with high accuracy and reliability for the test of the test piece.

[0045] Compared with the method of adjusting the water flow at only one end of the test pipeline 1, the method of adjusting both ends in the embodiment of the present application can improve the uniformity of the water flow inside the test pipeline 1, so that the water flow environment inside the test pipeline 1 can meet the requirements of the required test environment, further improving the test accuracy and reliability of the test piece.

[0046] Among them, when using the inlet regulating pipe section 21 or the outlet regulating pipe section 31 to regulate the water flow, only one inlet branch section 211 in the inlet regulating pipe section 21 or one outlet branch section 311 in the outlet regulating pipe section 31 can be adjusted to achieve a small range of adjustment of the water flow rate or pressure, thereby ensuring the adjustment accuracy; all inlet branch sections 211 in the inlet regulating pipe section 21 or all outlet branch sections 311 in the outlet regulating pipe section 31 can also be adjusted to achieve a large range of adjustment of the water flow rate or pressure, so that the overall adjustment range of the device is larger and can be applied to more working conditions.

[0047] In some optional embodiments, the number of first opening control valves 212 may be multiple, and the multiple first opening control valves 212 are arranged at intervals along the extension direction of the inlet branch section 211 to further improve the control accuracy of the opening of the inlet branch section 211; the number of second opening control valves 312 may be multiple, and the multiple second opening control valves 312 are arranged at intervals along the extension direction of the outlet branch section 311 to further improve the control accuracy of the opening of the outlet branch section 311.

[0048] like Figures 1 to 3As shown, a linkage water tunnel test device of an embodiment of the present application, wherein at least two inlet branch sections 211 include a first inlet branch section and a second inlet branch section, and the inner diameter of the first inlet branch section is larger than the inner diameter of the second inlet branch section; and / or, at least two outlet branch sections 311 include a first outlet branch section and a second outlet branch section, and the inner diameter of the first outlet branch section is larger than the inner diameter of the second outlet branch section.

[0049] In specific implementation, the inner diameter of the first inlet branch section is larger than the inner diameter of the second inlet branch section, so that the water flow rate passing through the first inlet branch section and the second inlet branch section is different. When the linkage water tunnel test device needs to be adjusted in a small range, the first opening control valve 212 of the second inlet branch section can be adjusted, and the adjustment range of the water flow is small, so that a precise adjustment effect can be achieved; when the linkage water tunnel test device needs to be adjusted in a large range, the first opening control valve 212 of the first inlet branch section can be adjusted, and the adjustment range of the water flow is large, so that it can be applied to more working conditions. By setting the first inlet branch section and the second inlet branch section with different inner diameters, graded adjustment of the water flow inside the test pipeline 1 can be achieved. Therefore, by adjusting the flow rate of the first inlet branch section and the second inlet branch section, it is possible to meet different working conditions and achieve precise adjustment of the flow rate under different working conditions.

[0050] Similar to the settings of the first inlet branch section and the second inlet branch section, the inner diameter settings of the first outlet branch section and the second outlet branch section can also meet the requirements of different working conditions and can achieve precise adjustment of the flow rate under different working conditions.

[0051] Furthermore, the inlet bifurcation section 211 can also be adjusted in conjunction with the outlet bifurcation section 311 to achieve corresponding adjustments for the water flow at the inlet and outlet of the test pipeline 1, thereby meeting a wider range of operating conditions. For example, if the water flow at the inlet of the test pipeline 1 is relatively close to the requirements of the desired test environment, but the water flow at the outlet differs significantly from the requirements of the desired test environment, the opening of the second inlet bifurcation section can be adjusted to precisely adjust the water flow at the inlet of the test pipeline 1. Simultaneously, the opening of the first outlet bifurcation section can be adjusted to significantly adjust the water flow at the outlet of the test pipeline 1 to meet the overall requirements of the desired test environment.

[0052] In some optional embodiments, the number of inlet branch sections 211 may be multiple, and the inner diameters of the multiple inlet branch sections 211 tend to increase, so as to achieve multi-stage regulation of the water flow at the inlet end of the test pipeline 1, which can further improve the regulation accuracy of the water flow at the inlet end of the test pipeline 1; and / or, the number of outlet branch sections 311 may be multiple, and the inner diameters of the multiple outlet branch sections 311 tend to increase, so as to achieve multi-stage regulation of the water flow at the outlet end of the test pipeline 1, which can further improve the regulation accuracy of the water flow at the outlet end of the test pipeline 1.

[0053] like Figure 1 As shown, the linkage water tunnel test device of an embodiment of the present application, wherein the inlet regulating pipe 2 also includes an inlet reducing pipe section 22, the inlet reducing pipe section 22 is connected between the inlet regulating pipe section 21 and the test pipe 1, and along the direction from the inlet regulating pipe section 21 to the test pipe 1, the cross-sectional area of ​​the inlet reducing pipe section 22 shows a decreasing trend.

[0054] During specific implementation, the cross-sectional area of ​​the inlet reducing pipe section 22 decreases along the direction from the inlet regulating pipe section 21 to the test pipeline 1. That is, the cross-sectional area of ​​the inlet reducing pipe section 22 is larger at the end closer to the inlet regulating pipe section 21, and smaller at the end closer to the test pipeline 1. After the water flows through the inlet reducing pipe section 22, the cross-sectional area of ​​the water flow decreases, and the water flow velocity increases, thereby achieving a flow velocity in the test pipeline 1 that meets the requirements of the simulated working conditions. Therefore, the provision of the inlet reducing pipe section 22 enables the water tunnel test device to achieve an increase in flow velocity solely through the structure, without the need for an additional power source to increase the water flow velocity, thus reducing the cost of the device and eliminating the need for linkage between the power source and the opening of each valve, making the test process and operation simpler.

[0055] like Figure 1 As shown, the linkage water tunnel test device of an embodiment of the present application, wherein the outlet regulating pipe 3 also includes an outlet reducing pipe section 32, the outlet reducing pipe section 32 is connected between the test pipe 1 and the outlet regulating pipe section 31, and the cross-sectional area of ​​the end of the outlet reducing pipe section 32 close to the outlet regulating pipe section 31 is larger than the cross-sectional area of ​​the end of the outlet regulating pipe section 31 close to the test pipe 1.

[0056] In specific implementation, the cross-sectional area of ​​the end of the outlet reducing pipe section 32 close to the outlet regulating pipe section 31 is larger than the cross-sectional area of ​​the end of the outlet regulating pipe section 31 close to the test pipeline 1, that is, the cross-sectional area of ​​the end of the outlet reducing pipe section 32 close to the test pipeline 1 is smaller, and the cross-sectional area of ​​the end close to the outlet regulating pipe section 31 is larger. After the water flows through the outlet reducing pipe section 32, the cross-sectional area of ​​the water flow increases, and the water flow velocity decreases, thereby achieving the requirement that the water flow velocity returns to normal after the water flows through the test pipeline 1. Therefore, the setting of the inlet reducing pipe section 22 allows the water tunnel test device to achieve the increase in flow velocity only through the structure, without the need for an additional power source to increase the water flow velocity, reducing the cost of the device, and eliminating the need for linkage between the power source and the opening of each valve, making the test process and operation simpler.

[0057] By providing the inlet reducer 22 and the outlet reducer 32, the flow rate of only the test pipeline 1 portion of the entire water tunnel test device is high, achieving precise control of the flow rate at different locations. At the same time, the flow rate of the portion outside the test pipeline 1 is low, which enables the water flow to meet the overall flow rate and pressure requirements within the device, improving the problem of damage to other pipe sections of the water tunnel test device caused by the high overall flow rate and pressure. Therefore, when designing the water tunnel test device as a whole, only the test pipeline 1 portion can be set as the portion with higher rigidity, and the remaining portion can meet the requirements of water flow, thereby reducing the overall manufacturing cost and process requirements of the device.

[0058] like Figure 1 As shown, a linkage water tunnel test device of an embodiment of the present application, wherein the outlet reducing pipe section 32 includes a first reducing section 321, a pressure regulating section 322 and a second reducing section 323 connected in sequence along the direction from the test pipeline 1 to the outlet regulating pipe section 31, the cross-sectional areas of the first reducing section 321 and the second reducing section 323 are both set in an increasing trend, and the cross-sectional area of ​​the pressure regulating section 322 is set to be constant.

[0059] In specific implementation, the cross-sectional area of ​​the first reducing section 321 is configured to increase. As the water flows through the first reducing section 321, its cross-sectional area increases, while its flow rate and pressure decrease. The water then enters the pressure regulating section 322, which has a constant cross-sectional area. Within the pressure regulating section 322, the water is buffered, stabilizing its pressure and flow rate, thereby ensuring the overall stability of the water flow within the water tunnel test apparatus. After passing through the pressure regulating section 322, the water enters the second reducing section 323, which has an increasing cross-sectional area. This further increases the cross-sectional area of ​​the water flow, further reducing its flow rate and pressure, ultimately ensuring that the flow rate and pressure meet the requirements for flow within the outlet regulating pipe section 31. Therefore, the pressure regulating section 322, acting as a buffer and adjustment structure disposed in the middle, can alleviate the problem of the water flow experiencing a prolonged continuous pressure reduction distance, thereby reducing the probability of the water flow becoming uncontrolled within the outlet reducing pipe section 32 and ensuring the flow stability of the water flow within the outlet reducing pipe section 32.

[0060] Specifically, the inlet reducing pipe section 22 is a tapered pipe section with a decreasing inner diameter. The first reducing section 321 and the second reducing section 323 of the outlet reducing pipe section 32 are also tapered pipe sections with increasing inner diameters. The tapered pipe sections can achieve uniform changes at all positions in the circumferential direction, which can ensure the gradual change trend of water flow rate and pressure, improve the problem of sudden changes in water flow rate or pressure, thereby ensuring the stability of water flow in the water tunnel test device and further improving the accuracy and reliability of the test environment.

[0061] Optionally, the inlet reducing pipe section 22 , the first reducing section 321 and the second reducing section 323 may also be any other shape with a gradually changing cross-sectional area.

[0062] like Figure 1 As shown, the linkage water tunnel test device of an embodiment of the present application, wherein the extension length of the first variable diameter section 321 is smaller than the extension length of the second variable diameter section 323; and / or, the increasing trend of the cross-sectional area of ​​the first variable diameter section 321 is smaller than the increasing trend of the cross-sectional area of ​​the second variable diameter section 323.

[0063] Since the average cross-sectional area of ​​the first variable diameter section 321 is smaller than the average cross-sectional area of ​​the second variable diameter section 323, when the water flows through the first variable diameter section 321 at high speed and high pressure, the overall speed and pressure of the water flow are unstable. By setting the extension length of the first variable diameter section 321 or the increasing trend of the cross-sectional area of ​​the first variable diameter section 321 to be smaller, the distance of the pipe section where the speed and pressure are unstable can be reduced, and the stability of the water flow passing through the first variable diameter section 321 can be adjusted in combination with the pressure regulating section 322. After passing through the pressure regulating section 322, the water flow can enter the second variable diameter section 323 in a stable flow state. By setting the extension length of the second variable diameter section 323 or the increasing trend of the cross-sectional area of ​​the second variable diameter section 323 to be larger, on the basis of the larger average cross-sectional area of ​​the second variable diameter section 323, the pressure and flow rate of the water flow can be stably and gradually adjusted, thereby further ensuring the stability of the water flow in the water tunnel test device and further improving the accuracy and reliability of the test environment.

[0064] In some optional embodiments, the inlet reducing pipe section 22 and the outlet reducing pipe section 32 may both include multiple reducing sections with different average cross-sectional areas and arranged in sequence in a gradual trend, and the reducing sections of the inlet reducing pipe section 22 or the reducing sections of the outlet reducing pipe section 32 are connected by a pressure regulating section with a constant inner diameter.

[0065] like Figure 1 As shown, the linkage water tunnel test device of an embodiment of the present application, wherein the inlet regulating pipeline 2 also includes a rectifying pipe section 23, the rectifying pipe section 23 is arranged between the inlet regulating pipe section 21 and the inlet reducing pipe section 22, and a rectifying structure is provided inside the rectifying pipe section 23 for adjusting the smoothness of the liquid medium entering the inlet reducing pipe section 22.

[0066] During specific implementation, the rectifying structure inside the rectifying pipe section 23 can form a rectifying effect on the water flow passing through the rectifying pipe section 23, thereby improving the smoothness of the water flow passing through the rectifying pipe section 23. Since the rectifying pipe section 23 is arranged between the inlet regulating pipe section 21 and the inlet reducing pipe section 22, the water flow passing through the rectifying pipe section 23 can enter the inlet regulating pipe section 21 in a relatively smooth state, so that the water flow can maintain a relatively high smoothness after being adjusted by the inlet regulating pipe section 21, thereby providing a stable simulation environment in the test pipeline 1 and ensuring the accuracy and reliability of the test.

[0067] Specifically, the rectifying structure within rectifying pipe section 23 is a honeycomb or rectifying mesh, covering the cross-section of rectifying pipe section 23, thereby ensuring a rectifying effect on the water flow. Rectifying pipe section 23 may include multiple rectifying structures spaced apart along its extension direction. These multiple rectifying structures may be a hybrid structure of honeycombs and rectifying meshes, further enhancing the rectifying effect on the water flow within rectifying pipe section 23.

[0068] like Figure 1As shown, the linkage water tunnel test device of an embodiment of the present application, wherein the inlet regulating pipeline 2 also includes an inlet pipe section 24, the inlet pipe section 24 is connected to the end of the inlet regulating pipe section 21 away from the test pipeline 1, and the inlet pipe section 24 has a first on-off control valve 241; the outlet regulating pipeline 3 also includes an outlet pipe section 33, the outlet pipe section 33 is connected to the end of the outlet regulating pipe section 31 away from the test pipeline 1, and the outlet pipe section 33 has a second on-off control valve 331.

[0069] In a specific implementation, the first on-off control valve 241 of the inlet pipe section 24 can control the overall on-off of the inlet regulating pipeline 2, thereby controlling the on-off of the water flow entering the test pipeline 1; the second on-off control valve 331 of the outlet pipe section 33 can control the overall on-off of the outlet regulating pipeline 3, thereby controlling the on-off of the water flow discharged from the test pipeline 1. By combining the on-off control of the first on-off control valve 241 and the second on-off control valve 331 with the opening control of the first opening control valve 212 and the second opening control valve 312, the water tunnel test device can independently control the water flow at multiple locations within the water tunnel test device. The water flow at multiple locations can all be accurately controlled and regulated, thereby achieving coordinated control of the overall water flow within the water tunnel test device, and providing a test environment with high accuracy and reliability for testing the test pieces.

[0070] Specifically, the first on-off control valve 241 and the second on-off control valve 331 are butterfly valves, suitable for on-off controlled pipelines; the first opening control valve 212 and the second opening control valve 312 are piston valves, suitable for opening controlled pipelines.

[0071] In the embodiment of the present application, the various sections of the pipeline of the linkage water tunnel test device are connected by bolt connection or welding connection, but are not limited to the above connection methods. It is necessary to ensure the sealed connection between the various sections of the pipeline.

[0072] like Figure 2 and Figure 3 As shown, the linkage water tunnel test device of the embodiment of the present application, wherein the water tunnel test device also includes a control component 4, including a central control device 41 and multiple driving components 42, the central control device 41 and the multiple driving components 42 are respectively communicated and connected, and the multiple driving components 42 are connected to the first opening control valve 212, the second opening control valve 312, the first on-off control valve 241 and the second on-off control valve 331 to control the on-off and opening of the inlet regulating pipeline 2 and the outlet regulating pipeline 3.

[0073] During specific implementation, the central control device 41 is a PLC centralized control cabinet, which can control multiple driving components 42. The multiple driving components 42 are hydraulic driving devices, which can respectively control the opening and closing of the first on-off control valve 241 and the second on-off control valve 331 and adjust the specific opening of the first opening control valve 212 and the second opening control valve 312, thereby controlling the on-off and opening of the inlet regulating pipeline 2 and the outlet regulating pipeline 3, realizing centralized control and linkage adjustment of each control valve, and ensuring the accuracy and reliability of the test.

[0074] like Figure 2 and Figure 3 As shown, the linked water tunnel test device of an embodiment of the present application, wherein the water tunnel test device also includes a sensor assembly 5, and a sensor assembly 5 is provided at both ends of the test pipeline 1. The sensor assembly 5 includes a flow rate sensor 51 and a pressure sensor 52, which are respectively used to measure the flow rate and pressure of the liquid at both ends of the test pipeline 1.

[0075] During specific implementation, the sensor assembly 5 includes a flow rate sensor 51 and a pressure sensor 52. Sensor assemblies 5 are provided at both ends of the test pipeline 1 so that the water flow rate and pressure at both ends of the test pipeline 1 can be measured, thereby adjusting the water flow state of the inlet regulating pipeline 2 or the outlet regulating pipeline 3 according to the water flow state at both ends, so that the water flow in the test pipeline 1 flows in a uniform state, ensuring the overall stability of the water flow inside the test pipeline 1.

[0076] In some optional embodiments, a plurality of sensor assemblies 5 may be spaced apart between the two ends of the test pipe 1 to further improve the measurement accuracy of the water flow in the test pipe 1 .

[0077] like Figure 4 As shown, the embodiment of the present application further provides a test method for a linkage water tunnel test device, wherein the test is performed using the linkage water tunnel test device described above. The test method for the linkage water tunnel test device includes:

[0078] S100 : Setting target water flow parameters in the test pipeline 1 according to the test requirements of the test piece.

[0079] The target water flow parameters include the target flow rate and target pressure of the water flow.

[0080] S200 , opening the inlet regulating pipeline 2 and the outlet regulating pipeline 3 , and collecting actual water flow parameters in the test pipeline 1 .

[0081] The actual water flow parameters include the actual flow rate and actual pressure of the water flow. During the collection process, the sensor component 5 needs to be used to collect the actual flow rate and actual pressure of the water flow at both ends of the test pipeline 1 to obtain the actual water flow parameters of the entire test pipeline 1.

[0082] S300: Calculate the deviation between the actual water flow parameter and the target water flow parameter.

[0083] The central control device 41 performs calculations based on the actual water flow parameters collected by the sensor assembly 5 to obtain a flow rate deviation value between the actual flow rate and the target flow rate, and a pressure deviation value between the actual pressure and the target pressure.

[0084] S400 , adjusting at least one of the first opening control valve 212 in the inlet regulating pipeline 2 and the second opening control valve 312 in the outlet regulating pipeline 3 according to the deviation value until the actual water flow parameter reaches the target water flow parameter.

[0085] S500: Obtain the navigation status of the test piece in the test pipeline 1.

[0086] When acquiring the navigation status of the test piece in the test pipeline 1 , an external detection component may be used to detect the navigation status of the test piece under target water flow parameters to detect whether the navigation status of the test piece meets the requirements.

[0087] During specific implementation, the test method of the linkage water tunnel test device of the embodiment of the present application is adopted. Under the multi-way adjustment of at least two parallel-arranged inlet bifurcation sections 211 of the inlet regulating pipeline 2 and the respective opening adjustment, precise control of the water flow rate and pressure at the inlet end of the test pipeline 1 is achieved; under the multi-way adjustment of at least two parallel-arranged outlet bifurcation sections 311 of the outlet regulating pipeline 3 and the respective opening adjustment, precise control of the water flow rate and pressure at the outlet end of the test pipeline 1 is achieved. Therefore, the water flow at both the inlet end and the outlet end of the test pipeline 1 can be accurately controlled and adjusted, thereby achieving precise control of the overall water flow environment in the test pipeline 1, and providing a test environment with high accuracy and reliability for the test of the test piece.

[0088] like Figure 5 As shown, the test method of the linkage water tunnel test device of the embodiment of the present application, wherein the step of adjusting at least one of the first opening control valve 212 in the inlet regulating pipeline 2 and the second opening control valve 312 in the outlet regulating pipeline 3 according to the deviation value until the actual water flow parameter reaches the target water flow parameter, includes:

[0089] S410: Set a preset control algorithm.

[0090] S420: Input the target water flow parameter and the deviation value into a preset control algorithm, and the preset control algorithm generates a preset control signal according to the target water flow parameter and the deviation value.

[0091] The preset control algorithm is a PID control algorithm. After the target water flow parameters and deviation values ​​are input into the preset control algorithm, the preset control algorithm can generate a preset control signal. The preset control signal includes a proportional coefficient, an integral coefficient, and a differential coefficient, which can make the actual water flow parameters closer to the target water flow parameters.

[0092] S430 , using a preset control signal to adjust at least one of the first opening control valve 212 and the second opening control valve 312 , and collecting real-time water flow parameters in the test pipeline 1 .

[0093] S440, setting the real-time water flow parameter as a feedback signal, and inputting the feedback signal into a preset control algorithm, which generates a real-time control signal based on the feedback signal and the deviation value;

[0094] S450 , using the real-time control signal to adjust at least one of the first opening control valve 212 and the second opening control valve 312 in real time until the actual water flow parameter reaches the target water flow parameter.

[0095] During specific implementation, after the feedback signal is fed back to the preset control algorithm, it is combined with the initial deviation value to generate a real-time control signal that can control the water flow, so that the preset control algorithm can be dynamically adjusted according to the latest feedback signal, thereby being able to promptly detect subtle changes in real-time water flow parameters and achieve precise regulation of actual water flow parameters, thereby making the actual water flow parameters meet the requirements of the target water flow parameters, providing a test environment with high accuracy and reliability for the test of the test piece.

[0096] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0097] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. A linkage water tunnel test device, characterized in that: include: A test pipeline (1), wherein the test pipeline (1) is used to install a test piece; an inlet regulating pipeline (2), the inlet regulating pipeline (2) being connected to one end of the test pipeline (1) and being used for injecting a liquid medium into the test pipeline (1), the inlet regulating pipeline (2) comprising an inlet regulating pipe section (21) and an inlet reducing pipe section (22), the inlet regulating pipe section (21) comprising at least two inlet bifurcated sections (211) arranged in parallel, each of the inlet bifurcated sections (211) having a first opening control valve (212), the inlet reducing pipe section (22) being connected between the inlet regulating pipe section (21) and the test pipeline (1), and the cross-sectional area of ​​the inlet reducing pipe section (22) presents a decreasing trend in a direction from the inlet regulating pipe section (21) to the test pipeline (1); An outlet regulating pipeline (3) is connected to the other end of the test pipeline (1) and is used to discharge the liquid medium in the test pipeline (1). The outlet regulating pipeline (3) includes an outlet regulating pipe section (31) and an outlet reducing pipe section (32). The outlet regulating pipe section (31) includes at least two outlet branching sections (311) arranged in parallel. Each outlet branching section (311) has a second opening control valve (312). The outlet reducing pipe section (32) is connected between the test pipeline (1) and the outlet regulating pipe section (31). The cross-sectional area of ​​the end of the outlet reducing pipe section (32) close to the outlet regulating pipe section (31) is larger than the cross-sectional area of ​​the end of the outlet regulating pipe section (31) close to the test pipeline (1).

2. The linkage water tunnel test device according to claim 1, characterized in that: The at least two inlet branching sections (211) include a first inlet branching section and a second inlet branching section, and the inner diameter of the first inlet branching section is greater than the inner diameter of the second inlet branching section; And / or, the at least two outlet branching sections (311) include a first outlet branching section and a second outlet branching section, and the inner diameter of the first outlet branching section is greater than the inner diameter of the second outlet branching section.

3. The linkage water tunnel test device according to claim 1, characterized in that: The outlet reducing pipe section (32) comprises a first reducing section (321), a pressure regulating section (322), and a second reducing section (323) which are sequentially connected along a direction from the test pipeline (1) to the outlet regulating pipe section (31); the cross-sectional areas of the first reducing section (321) and the second reducing section (323) are both arranged in an increasing trend, and the cross-sectional area of ​​the pressure regulating section (322) is arranged to be constant.

4. The linkage water tunnel test device according to claim 3, characterized in that: The extension length of the first diameter-reducing section (321) is smaller than the extension length of the second diameter-reducing section (323); And / or, the increasing trend of the cross-sectional area of ​​the first diameter-varying section (321) is smaller than the increasing trend of the cross-sectional area of ​​the second diameter-varying section (323).

5. The linkage water tunnel test device according to claim 1, characterized in that: The inlet regulating pipeline (2) further comprises a rectifying pipe section (23), wherein the rectifying pipe section (23) is arranged between the inlet regulating pipe section (21) and the inlet reducing pipe section (22), and a rectifying structure is provided inside the rectifying pipe section (23) for regulating the smoothness of the liquid medium entering the inlet reducing pipe section (22).

6. The linkage water tunnel test device according to claim 1, characterized in that: The inlet regulating pipeline (2) further comprises an inlet pipe section (24), the inlet pipe section (24) being connected to an end of the inlet regulating pipe section (21) away from the test pipeline (1), and the inlet pipe section (24) having a first on-off control valve (241); The outlet regulating pipeline (3) further comprises an outlet pipe section (33), wherein the outlet pipe section (33) is connected to an end of the outlet regulating pipe section (31) away from the test pipeline (1), and the outlet pipe section (33) has a second on-off control valve (331).

7. The linkage water tunnel test device according to claim 6, characterized in that: The water tunnel test device also includes: The control assembly (4) includes a central control device (41) and a plurality of driving members (42), wherein the central control device (41) and the plurality of driving members (42) are respectively connected in communication with each other, and the plurality of driving members (42) are connected to the first opening control valve (212), the second opening control valve (312), the first on-off control valve (241) and the second on-off control valve (331) to control the on-off and opening of the inlet regulating pipeline (2) and the outlet regulating pipeline (3).

8. The linkage water tunnel test device according to claim 1, characterized in that: The water tunnel test device also includes: A sensor assembly (5) is provided at both ends of the test pipeline (1). The sensor assembly (5) comprises a flow rate sensor (51) and a pressure sensor (52), which are respectively used to measure the flow rate and pressure of the liquid at the two ends of the test pipeline (1).

9. A test method for a linkage water tunnel test device, characterized in that: A test is conducted using the linked water tunnel test device according to any one of claims 1 to 8, wherein the test method of the linked water tunnel test device comprises: According to the test requirements of the test piece, the target water flow parameters in the test pipeline (1) are set; Opening the inlet regulating pipeline (2) and the outlet regulating pipeline (3), and collecting actual water flow parameters in the test pipeline (1); Calculating a deviation between the actual water flow parameter and the target water flow parameter; According to the deviation value, regulating at least one of the first opening control valve (212) in the inlet regulating pipeline (2) and the second opening control valve (312) in the outlet regulating pipeline (3) until the actual water flow parameter reaches the target water flow parameter; Obtain the navigation status of the test piece in the test pipeline (1).

10. The test method of the linkage water tunnel test device according to claim 9, characterized in that: The step of adjusting at least one of the first opening control valve (212) in the inlet regulating pipeline (2) and the second opening control valve (312) in the outlet regulating pipeline (3) according to the deviation value until the actual water flow parameter reaches the target water flow parameter includes: Set the preset control algorithm; Inputting the target water flow parameter and the deviation value into the preset control algorithm, wherein the preset control algorithm generates a preset control signal according to the target water flow parameter and the deviation value; Using the preset control signal to adjust at least one of the first opening control valve (212) and the second opening control valve (312), and collecting real-time water flow parameters in the test pipeline (1); Setting the real-time water flow parameter as a feedback signal, and inputting the feedback signal into a preset control algorithm, wherein the preset control algorithm generates a real-time control signal according to the feedback signal and the deviation value; The real-time control signal is used to adjust at least one of the first opening control valve (212) and the second opening control valve (312) in real time until the actual water flow parameter reaches the target water flow parameter.

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