Liquid material technological process equivalent stimulation simulation device and method

Abstract

The invention provides an equivalent stimulation simulation device and method for a liquid material technological process, and the device comprises a test pipeline assembly, the test pipeline assembly comprises a test pedestal which is horizontally arranged, the test pedestal is provided with a left placement pipe and a right placement pipe which are transversely and coaxially arranged, and a transparent test pipeline is detachably and coaxially arranged between the left placement pipe and the right placement pipe; the left pipe is communicated with a material opening in the bottom of one liquid material tank, the right pipe is communicated with a material opening in the bottom of the other liquid material tank, vacuumizing holes in the tops of the two liquid material tanks are each provided with a vacuum pressure regulating valve, the two vacuum pressure regulating valves are connected with the same vacuum tank, and pressure regulation in the transparent testing pipeline is achieved; a sheet light source explosion-proof box is arranged above the transparent testing pipeline in the vertical direction, a high-speed camera explosion-proof box is arranged in front of the transparent testing pipeline in the longitudinal direction, and an optical observation area of the transparent testing pipeline is located in a common view area of a first window of the sheet light source explosion-proof box and a second window of the high-speed camera explosion-proof box at the same time. The device provided by the invention effectively solves the safety problem in the research on the flow characteristics of the dangerous liquid material, and realizes visual observation in an explosion-proof environment.

Description

Technical Field

[0001] This invention belongs to the field of hazardous liquid technology, and relates to the testing of the flow characteristics of hazardous liquids, specifically to an equivalent stimulus simulation device and method for liquid process. Background Technology

[0002] In industrial production and transportation scenarios involving flammable, explosive, toxic, or corrosive hazardous liquids, accurately grasping their flow characteristics (including velocity distribution, eddy current morphology, bend effect, and valve controllability) under different pipeline structures and operating conditions is of great significance for efficient process advancement, stable equipment operation, and overall production safety.

[0003] However, current research on the flow characteristics of such hazardous liquids faces numerous challenges. On the one hand, the hazardous characteristics of the liquids limit the safety risks of conducting visual flow observations (e.g., particle image velocimetry) under real or near-realistic working conditions (such as observation through transparent pipes or applying pressure differences). On the other hand, conventional laboratory equipment lacks sufficient explosion-proof performance and cannot be adapted to experiments with hazardous media; existing experimental devices lack flexibility and cannot accurately reproduce the complex working conditions in actual engineering projects. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an equivalent stimulus simulation device and method for liquid material processing, so as to solve the technical problems that are difficult to overcome in terms of safety and flexibility of real experiments in liquid material processing in the existing technology.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A liquid material process equivalent stimulation simulation device includes a test pipeline assembly. The test pipeline assembly includes a horizontally arranged test base, on which a left tube and a right tube are installed horizontally and coaxially. A transparent test pipe is detachably and coaxially installed between the left tube and the right tube.

[0007] The left-side tube is connected to the bottom inlet of one liquid tank, and the right-side tube is connected to the bottom inlet of another liquid tank. A vacuum pressure valve is installed on the top vacuum port of each of the two liquid tanks, and the two vacuum pressure valves are connected to the same vacuum tank to achieve pressure regulation in the transparent test pipe.

[0008] A sheet light source explosion-proof box is installed vertically above the transparent test pipe, and a high-speed camera explosion-proof box is installed longitudinally in front of the transparent test pipe. The optical observation area of ​​the transparent test pipe is located in the common field of view area of ​​the first window of the sheet light source explosion-proof box and the second window of the high-speed camera explosion-proof box.

[0009] The present invention also has the following technical features:

[0010] The transparent test pipe can be a straight pipe, a reduced-diameter bend, a reduced-diameter four-way pipe, or a flexible hose fitted with a clamp valve of different diameters.

[0011] The present invention also includes a method for simulating equivalent stimuli in a liquid material process, which employs the liquid material process equivalent stimuli simulation device described above.

[0012] The method includes the following steps:

[0013] Step S1: Inject test liquid containing tracer particles into one liquid tank, and use another liquid tank as a receiving container.

[0014] Step S2: Adjust the two vacuum pressure valves to create a pressure difference between the two liquid tanks, driving the test liquid to flow through the transparent test pipe.

[0015] Step S3: Activate the sheet light source in the explosion-proof box to project the sheet light source into the optical observation area of ​​the transparent test pipe.

[0016] Step S4: Simultaneously start the high-speed camera in the explosion-proof high-speed camera box. Adjust the horizontal moving component to align the second viewing window of the explosion-proof high-speed camera box with the optical observation area of ​​the transparent test pipe, and capture images of the movement of tracer particles flowing through the optical observation area of ​​the transparent test pipe.

[0017] Step S5: Based on motion image analysis, test the flow velocity field, eddy distribution, and flow characteristics of the pipe bend area of ​​the liquid.

[0018] Compared with the prior art, the present invention has the following technical effects:

[0019] (I) The device of this invention effectively solves the safety challenges in the study of the flow characteristics of hazardous liquids, enabling visual observation in an explosion-proof environment. The device can flexibly simulate complex working conditions in actual engineering projects, accurately reproducing different pipe structures by replacing different transparent test pipe components, and simulating different operating conditions by adjusting the pressure difference and clamping force of the clamping valve through a controller. This provides a reliable means for in-depth research on the flow characteristics of hazardous liquids, helping to optimize industrial production and transportation processes, and improve process efficiency, equipment reliability, and production safety.

[0020] (II) The explosion-proof box for the sheet light source, the explosion-proof box for the high-speed camera, and the vacuum differential pressure driving mechanism in this invention work together to completely avoid the safety risks in the observation process of flammable and explosive liquids, and successfully break through the safety bottleneck of dangerous medium experiments.

[0021] (III) The detachable transparent test pipe (including straight pipe, reducing pipe and flexible pipe with clamp valve) in this invention can realize one-stop testing of pipe diameter change, elbow flow state and valve closing characteristics, and fully cover the core scenarios of industrial conveying.

[0022] (IV) The device of the present invention is based on particle image velocimetry (PIV) technology, which can extract quantitative data such as transient velocity field, vorticity distribution and streamline separation angle from motion images, replacing empirical formulas and greatly improving the reliability of the design.

[0023] (V) The device of the present invention can directly correlate the functional relationship between the delivery pressure, pipe diameter, hose material and critical closing clamping force through closed-loop control of pressure difference and clamping force, providing a test basis for valve selection. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the equivalent stimulus simulation device for liquid material processing.

[0025] Figure 2 A schematic diagram of the overall structure of a test pipeline assembly with a straight pipe for transparent testing.

[0026] Figure 3 This is a schematic diagram of the overall structure of the liquid tank.

[0027] Figure 4 This is a schematic diagram illustrating the pressure regulation principle inside a transparent test pipeline.

[0028] Figure 5 A schematic diagram of the overall structure of the test pipeline assembly, which is a reduced-diameter bend for transparent testing.

[0029] Figure 6 A schematic diagram of the overall structure of the test pipeline assembly, which is a reduced-diameter four-way pipe for transparent testing.

[0030] Figure 7 This is a schematic diagram of the overall structure of the pinch valve.

[0031] Figure 8 A schematic diagram of the overall structure supporting the frame.

[0032] Figure 9 This is a schematic diagram of the overall structure of the explosion-proof box for a light source.

[0033] Figure 10 This is a schematic diagram of the overall structure of the explosion-proof box for a high-speed camera from one perspective.

[0034] Figure 11 This is a schematic diagram of the overall structure of the explosion-proof box for high-speed cameras from another perspective.

[0035] The meanings of the labels in the diagram are as follows: 1-Test pipeline assembly, 2-Liquid tank, 3-Vacuum pressure valve, 4-Vacuum tank, 5-Explosion-proof box for light source, 6-Explosion-proof box for high-speed camera, 7-Pipe clamp valve, 8-Support frame, 9-Back plate, 10-Quick-release connector.

[0036] 101-Test base, 102-Left tube, 103-Right tube, 104-Transparent test pipe.

[0037] 201 - Bottom feed port, 202 - Top vacuum hole.

[0038] 501 - First viewing window, 502 - First compressed air interface.

[0039] 601 - Second window, 602 - Second compressed air interface.

[0040] 701-Fixing plate, 702-Cylinder, 703-Pressure block, 704-Connecting rod, 705-Pressure plate, 706-Light source window, 707-Glass plate.

[0041] 801-Horizontal support frame, 802-Vertical support frame, 803-Liquid tank mounting bracket, 804-Horizontal moving assembly, 805-Handle, 806-Wheel casters.

[0042] 80401 - Longitudinal slide rail, 80402 - Longitudinal moving version, 80403 - Lateral slide rail, 80404 - Lateral moving version.

[0043] The specific content of the present invention will be further explained in detail below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0044] It should be noted that, unless otherwise specified, all materials, components and equipment in this invention are made from materials, components and equipment known in the prior art.

[0045] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0046] Example 1:

[0047] This embodiment provides an equivalent stimulus simulation device for liquid material processing, such as... Figure 1 As shown, it includes test piping assembly 1, such as Figure 2 As shown, the test pipeline assembly 1 includes a horizontally arranged test base 101, on which a left tube 102 and a right tube 103 are mounted horizontally and coaxially. A transparent test pipe 104 is detachably and coaxially mounted between the left tube 102 and the right tube 103.

[0048] like Figures 1 to 4 As shown, the left tube 102 is connected to the bottom inlet 201 of a liquid tank 2, and the right tube 103 is connected to the bottom inlet 201 of another liquid tank 2. A vacuum pressure valve 3 is installed on the top vacuum hole 202 of the two liquid tanks 2 respectively. The two vacuum pressure valves 3 are connected to the same vacuum tank 4 to realize the pressure regulation in the transparent test pipe 104.

[0049] like Figure 1 As shown, a sheet light source explosion-proof box 5 is installed vertically above the transparent test pipe 104, and a high-speed camera explosion-proof box 6 is installed longitudinally in front of the transparent test pipe 104. The optical observation area of ​​the transparent test pipe 104 is located in the common field of view area of ​​the first window 501 of the sheet light source explosion-proof box 5 and the second window 601 of the high-speed camera explosion-proof box 6.

[0050] In this embodiment, as Figure 2 As shown, the transparent test pipe 104 adopts a detachable structure, which facilitates the replacement of different pipe fittings, thereby accurately simulating diverse pipe structures. The quick-release connector 10 enables detachable coaxial installation, making the installation and removal of the transparent test pipe 104 extremely convenient. This shortens the time required to replace different types of transparent test pipes 104, improves experimental efficiency, and allows researchers to quickly simulate different pipe structures and operating conditions.

[0051] In this embodiment, one liquid tank 2 is used to inject the test liquid containing tracer particles. Another liquid tank 2 is used to store the test liquid containing tracer particles. The main body of the liquid tank 2 is carefully made of 304 stainless steel, which has excellent corrosion resistance. This material can effectively resist corrosion damage that may be caused by hazardous materials, ensuring the long-term stable operation of the liquid tank 2.

[0052] In this embodiment, as Figure 3 As shown, the liquid tank 2 is designed with a cylindrical shape and an elliptical bottom. This unique shape not only provides better mechanical stability, enabling it to withstand certain pressures and impacts, but the elliptical bottom also facilitates complete material discharge, reducing material residue. The liquid tank 2 has a capacity of approximately 5L, which meets the material quantity requirements during experiments without causing space waste or operational inconvenience due to excessive size.

[0053] In this embodiment, to further improve the performance of the liquid tank 2, its inner surface has undergone fine polishing. The smooth inner surface can reduce the adhesion of materials inside the tank, reduce the risk of material residue, and also facilitate subsequent cleaning and maintenance, ensuring that the liquid tank 2 used in each experiment is in a clean and uncontaminated state.

[0054] In this embodiment, a quick-installation structure is adopted for the connection between the liquid tank 2 and its lid, and a clamp is used for fastening and sealing. This design is simple and quick to operate, enabling the installation and disassembly of the tank body and lid in a short time, thus improving experimental efficiency. The bottom inlet 201 of the liquid tank 2 adopts a pagoda connector, which has the advantages of strong connection and good sealing performance. It is connected to the test pipeline assembly 1 through a flexible pipe, which can flexibly adapt to different experimental layout requirements and ensure that the test liquid can flow smoothly from the bottom inlet 201 into the transparent test pipeline 104. In addition, a vacuum hole 202 is reserved on the lid, which is connected to the vacuum tank 4 through the vacuum pressure valve 3. The vacuum tank 4 is connected to the vacuum pump, which can realize the control of the vacuum degree inside the liquid tank 2.

[0055] In this embodiment, as Figure 4 As shown, the vacuum source utilizes the existing vacuum pump and vacuum tank 4 in the workshop to provide power support for the flow of test liquid within the test pipeline assembly 1.

[0056] In this embodiment, as Figure 4 As shown, by adjusting the output pressure of the two vacuum pressure valves 3, the pressure difference between the two liquid tanks 2 is controlled, and under the action of the pressure difference, the test liquid flows through the test pipeline assembly 1.

[0057] In this embodiment, as Figure 1 As shown, the sheet light source explosion-proof box 5 is responsible for projecting a sheet light source onto the transparent test pipe 104, illuminating the optical observation area of ​​the transparent test pipe 104; the high-speed camera explosion-proof box 6 is used to simultaneously capture and photograph the motion images of tracer particles flowing through the transparent test pipe 104. By analyzing these motion images, the flow velocity field, eddy distribution, and flow characteristics of the pipe bends of the test liquid can be obtained.

[0058] As a preferred embodiment, the transparent test pipe 104 can be a straight pipe, a reduced-diameter bend, a reduced-diameter four-way pipe, or a flexible hose fitted with a clamp valve 7, depending on the pipe diameter. Specifically, in this embodiment, for example... Figure 2 As shown, the straight pipes of different diameters are φ20mm, φ10mm, or φ5mm. Figure 5 As shown, the reducing bend is a φ20mm-φ10mm reducing bend. (As...) Figure 6 As shown, the reducing diameter four-way pipe is a φ20mm-φ10mm reducing diameter four-way pipe.

[0059] In this embodiment, the function of the clamping valve 7 is to determine the clamping force required to completely close the hose when the test liquid flows through the hose of different diameters at different pressures.

[0060] Specifically, such as Figure 7As shown, the pinch valve 7 includes a fixing plate 701, a cylinder 702 is mounted on the bottom surface of the fixing plate 701, the telescopic end of the cylinder 702 extends out of the top of the fixing plate 701, and a pressure block 703 is mounted on the telescopic end of the cylinder 702.

[0061] like Figure 7 As shown, a pressure plate 705 is connected to the top surface of the fixing plate 701 by a plurality of vertically arranged connecting rods 704. The pressure plate 705 is arranged parallel to the fixing plate 701. A vertically penetrating light source window 706 is provided on the pressure plate 705. The long axis of the light source window 706 is arranged along the transverse direction. The light source window 706 is directly opposite the first viewing window 501 of the explosion-proof box 5 for the light source.

[0062] like Figure 7 As shown, a glass plate 707 is installed at the bottom of the pressure plate 705. The glass plate 707 is located in the field of view of the second viewing window 601 of the high-speed camera explosion-proof box 6. The hose is located between the pressure block 703 and the glass plate 707. The vertical lifting and lowering of the pressure block 703 can realize the flow adjustment of the hose.

[0063] In this embodiment, when the clamp valve 7 is working, when the telescopic end of the cylinder 702 extends, it drives the pressure block 703 to move vertically upward, squeezing the hose located between the pressure block 703 and the glass plate 707 until the hose is completely closed. This is used to determine the clamping force required for the clamp valve 7 to completely close when the test liquid flows through hoses of different diameters at different pressures. When the telescopic end of the cylinder 702 retracts, the pressure block 703 moves away from the hose, and the hose returns to its flow state. During this process, the sheet light source emits a sheet light source through the first viewing window 501 of the sheet light source explosion-proof box 5, and the high-speed camera captures video of the liquid flow inside the hose when the clamp valve 7 is closed or opened through the second viewing window 601 of the high-speed camera explosion-proof box 6.

[0064] In this embodiment, as Figure 7 As shown, the clamp valve 7 achieves hose compression through the mechanical structure of the pressure block 703 driven by the cylinder 702. This allows for precise control of the hose's opening and closing, and can flexibly simulate the flow conditions of hoses of different diameters under different pressures, providing a reliable means to study the flow characteristics of hazardous liquids in hoses. The combined design of the glass plate 707 and the light source window 706 ensures both the light transmission requirements of the high-speed camera explosion-proof box 6 and facilitates clear observation of the liquid flow inside the hose, aiding in in-depth analysis of characteristics such as the flow velocity field and eddy current distribution. Simultaneously, the cylinder 702 can be remotely controlled, improving the safety and convenience of experimental operations and providing strong support for optimizing industrial production and conveying processes, improving process efficiency, equipment reliability, and production safety.

[0065] In this embodiment, during the experiment, the clamping valve 7 was closed by using different air pressures, and the clamping force of the clamping valve 7 was accurately calculated based on the selected air pressure.

[0066] In this embodiment, to better adapt to the clamping force testing requirements of hoses with different diameters, the clamping valve 7 uses a 32mm diameter cylinder 702 as the clamping power source. When the cylinder 702 is driven by 0.7MPa compressed air, it can provide a clamping force of not less than 50kg. In actual experiments, the experimenter can flexibly adjust the operating pressure of the cylinder 702 according to the specific diameter and material differences of the hose. After the experiment, the corresponding clamping force is accurately calculated based on the actual pressure of the cylinder 702.

[0067] In this embodiment, the compressed air source directly utilizes the existing compressor and air tank in the workshop to provide the necessary power for the extension and retraction of the cylinder 702 of the clamp valve 7.

[0068] As a preferred embodiment of this invention, such as Figure 1 As shown, it also includes a support frame 8, such as Figure 8 As shown, the support frame 8 includes a horizontal support frame 801, a vertical support frame 802 is fixedly installed on the longitudinal rear part of the horizontal support frame 801, a liquid tank mounting bracket 803 is provided on the longitudinal rear part of the vertical support frame 802, and a horizontal moving component 804 is provided on the horizontal support frame 801.

[0069] like Figure 8 As shown, a test pipeline assembly 1 is installed inside the vertical support frame 802; a sheet light source explosion-proof box 5 is installed on the top of the vertical support frame 802, and a liquid tank 2 is installed on the liquid tank mounting bracket 803; a high-speed camera explosion-proof box 6 is installed on the horizontal moving assembly 804.

[0070] In this embodiment, as Figure 8 As shown, the horizontal support frame 801 and the vertical support frame 802 are welded from carbon steel square tubes.

[0071] As a further preferred embodiment, such as Figure 8 As shown, the horizontal moving component 804 includes a pair of longitudinal slide rails 80401 arranged longitudinally on the horizontal support frame 801, and a longitudinal moving plate 80402 that can slide longitudinally is installed on the pair of longitudinal slide rails 80401; a pair of transverse slide rails 80403 are arranged transversely on the longitudinal moving plate 80402, and a transverse moving plate 80404 that can slide transversely is installed on the pair of transverse slide rails 80403, and a high-speed camera explosion-proof box 6 is installed on the transverse moving plate 80404.

[0072] In this embodiment, as Figure 1As shown, the horizontal movement component 804 enables the high-speed camera explosion-proof box 6 to move flexibly in both the horizontal and vertical dimensions, greatly expanding the shooting range and angle adjustment freedom of the high-speed camera. In the equivalent stimulus simulation experiment of liquid material processing, the position of the high-speed camera can be precisely adjusted according to experimental needs to capture the flow details of liquid material at different positions and angles, obtaining more comprehensive and accurate experimental data. This provides strong technical support for in-depth research on liquid material processing, helps improve the accuracy and reliability of experiments, and promotes the optimization and improvement of related processes.

[0073] As a further preferred embodiment, such as Figure 8 As shown, a handle 805 is provided at the longitudinal rear of the vertical support frame 802, and casters 806 are installed at the bottom of the horizontal support frame 801, which facilitates easy movement, greatly improves the mobility of the device, makes it easy to move flexibly between different experimental sites, facilitates quick adjustment of the experimental environment according to actual needs, improves experimental efficiency, and adapts to diverse industrial research scenarios.

[0074] As a preferred embodiment of this invention, such as Figure 1 As shown, a backplate 9 is also installed on the vertical support frame 802, and the backplate 9 is located at the longitudinal rear of the transparent test pipe 104. In this embodiment, the backplate 9 faces the second viewing window 602 of the high-speed camera explosion-proof box 6. The backplate 9 is a matte black background plate, used as the shooting background for the high-speed camera. The matte black background plate can effectively reduce light reflection and interference, providing a clear, low-reflectivity background for the high-speed camera explosion-proof box 6 to capture images, improving the imaging quality of the tracer particle motion image, and making the subsequent analysis of data such as the test liquid flow velocity field, eddy distribution, and flow characteristics in the pipe bend area more accurate.

[0075] In this embodiment, the dual-pulse laser and the sheet light source lens are housed within the sheet light source explosion-proof enclosure 5, and the high-speed camera within the sheet light source explosion-proof enclosure 5 is housed within the high-speed camera explosion-proof enclosure 6. Both the sheet light source explosion-proof enclosure 5 and the high-speed camera explosion-proof enclosure 6 are equipped with enclosures that are nationally certified and have an explosion-proof rating of Ex dⅡb T4. This design ensures the safety of the high-speed camera and sheet light source equipment in hazardous environments.

[0076] As a preferred embodiment of this invention, such as Figure 9 As shown, the explosion-proof box 5 for the light source is also equipped with two first compressed air interfaces 502, such as... Figure 10 and Figure 11As shown, the high-speed camera explosion-proof enclosure 6 is also equipped with two second compressed air interfaces 602. In this embodiment, the compressed air source directly utilizes the existing compressor and air tank in the workshop. The two first compressed air interfaces 502 and the two second compressed air interfaces 602 are respectively connected to the compressed air storage tank through pipelines to achieve air exchange between the enclosures, effectively cooling the internal components, ensuring that the equipment maintains stable performance during long-term operation, reducing the risk of failure due to overheating, and providing reliable technical support for accurately capturing the flow characteristics of liquids in complex environments, which helps to improve the accuracy and reliability of experimental data.

[0077] Example 2:

[0078] This embodiment provides a method for simulating equivalent stimuli in a liquid material process, which uses the equivalent stimuli simulation device for a liquid material process given in Embodiment 1.

[0079] The method includes the following steps:

[0080] Step S1: Inject test liquid containing tracer particles into one liquid tank 2, and use another liquid tank 2 as a receiving container.

[0081] Step S2: Adjust the two vacuum pressure valves 3 to create a pressure difference between the two liquid tanks 2, driving the test liquid to flow through the transparent test pipe 104.

[0082] Step S3: Activate the sheet light source in the sheet light source explosion-proof box 5 to project the sheet light source into the optical observation area of ​​the transparent test pipe 104.

[0083] Step S4: Simultaneously start the high-speed camera in the explosion-proof high-speed camera box 6. Adjust the horizontal moving component 804 so that the second viewing window 601 of the explosion-proof high-speed camera box 6 is aligned with the optical observation area of ​​the transparent test pipe 104, and capture the motion image of the tracer particles flowing through the optical observation area of ​​the transparent test pipe 104.

[0084] Step S5: Based on motion image analysis, test the flow velocity field, eddy distribution, and flow characteristics of the pipe bend area of ​​the liquid.

[0085] In this embodiment, step S5 specifically includes the following steps:

[0086] Step S501: Calculate the displacement vector of the tracer particle using the tracer particle motion image.

[0087] Step S502: Identify the vortex core location and vortex intensity distribution based on the vorticity equation.

[0088] Step S503: Extract the coordinates of the streamline separation point in the pipe bend area.

[0089] In this embodiment, step S5 first accurately calculates the displacement vector of the tracer particles based on the motion image of the tracer particles, providing basic data for subsequent analysis; then, it effectively identifies the vortex core position and vortex intensity distribution based on the vortex equation, clearly presenting the vortex characteristics; finally, it extracts the coordinates of the streamline separation point in the pipe bend area, accurately locating key flow change points. This series of operations can deeply and meticulously analyze the flow of the test liquid in the pipe, providing researchers with comprehensive and accurate information on flow characteristics. This helps to accurately grasp the fluid dynamics behavior during the liquid material process, providing strong data support for optimizing process parameters and improving pipe design, thereby improving process efficiency and quality, and ensuring safe and stable production operation.

[0090] Preferably, when the transparent test pipe 104 is a flexible tube fitted with the clamp valve 7, the method further includes step S6, which includes the following steps:

[0091] Step S601: Fix the pressure difference between the two liquid tanks and set the conveying pressure P. 输送 .

[0092] Step S602: Increase the driving air pressure P of cylinder 702 of clamp valve 7 at a constant rate. 气缸 Simultaneously monitor the liquid flow rate inside the hose.

[0093] Step S603: When the flow rate drops to a predetermined threshold (e.g., 0.01 m / s), record the driving air pressure P of cylinder 702 at this time. 临界 .

[0094] Step S604, based on formula F 闭合 =P 临界 ×A 活塞 Calculate the mechanical clamping force required for the pinch valve 7 to fully close, where F 闭合 A is the mechanical clamping force required for the pinch valve to fully close. 活塞 This represents the effective piston area of ​​the cylinder.

[0095] Step S605, iterate through different delivery pressures P 输送 Given the hose diameter D and hose material type, repeat steps S601-S604 to generate a closure characteristic database.

[0096] The equivalent stimulus simulation method for liquid material processing in this embodiment utilizes a specific device. It involves injecting a test liquid containing tracer particles, adjusting a vacuum pressure valve 3 to create a pressure difference driving liquid flow, projecting a sheet light source using a sheet light source explosion-proof box 5, and simultaneously activating a high-speed camera explosion-proof box 6 to capture images of the tracer particle movement. This allows for the analysis of the test liquid's flow characteristics. When the transparent test pipe 104 is a flexible tube fitted with a clamp valve 7, the clamping force can be linearly increased under a constant pressure difference until liquid flow is interrupted, and the critical clamping force is recorded. This series of operations not only comprehensively and accurately acquires key data such as the flow velocity field, eddy distribution, and flow regime characteristics of the test liquid within the pipe, but also precisely measures the critical clamping force that interrupts liquid flow under different operating conditions for flexible tubes equipped with clamp valves 7. This provides detailed and reliable experimental evidence for in-depth research on liquid material processing, optimization of pipe design, and rational setting of clamp valve 7 parameters, contributing to improved process safety and stability and promoting technological development in related fields.

Claims

1. A device for simulating equivalent stimuli in a liquid material processing procedure, characterized in that, The test pipeline assembly (1) includes a horizontally arranged test base (101), on which a horizontally coaxially arranged left tube (102) and right tube (103) are installed, and a transparent test pipe (104) is detachably coaxially installed between the left tube (102) and the right tube (103). The left tube (102) is connected to the bottom port (201) of a liquid tank (2), and the right tube (103) is connected to the bottom port (201) of another liquid tank (2). A vacuum pressure valve (3) is installed on the top vacuum hole (202) of the two liquid tanks (2). The two vacuum pressure valves (3) are connected to the same vacuum tank (4) to realize the pressure regulation in the transparent test pipe (104). A sheet light source explosion-proof box (5) is installed vertically above the transparent test pipe (104), and a high-speed camera explosion-proof box (6) is installed longitudinally in front of the transparent test pipe (104). The optical observation area of ​​the transparent test pipe (104) is located in the common field of view area of ​​the first window (501) of the sheet light source explosion-proof box (5) and the second window (601) of the high-speed camera explosion-proof box (6).

2. The liquid material process equivalent stimulation simulation device as described in claim 1, characterized in that, The transparent test pipe (104) can be a straight pipe, a reduced-diameter bend, a reduced-diameter four-way pipe or a flexible hose fitted with a clamp valve (7) of different diameters.

3. The liquid material process equivalent stimulation simulation device as described in claim 2, characterized in that, The clamp valve (7) includes a fixing plate (701), a cylinder (702) is installed on the bottom surface of the fixing plate (701), the telescopic end of the cylinder (702) extends out of the top of the fixing plate (701), and a pressure block (703) is installed on the telescopic end of the cylinder (702). A pressure plate (705) is connected to the top surface of the fixing plate (701) by a plurality of vertically arranged connecting rods (704). The pressure plate (705) is arranged parallel to the fixing plate (701). A vertically penetrating light source window (706) is provided on the pressure plate (705). The long axis of the light source window (706) is arranged along the transverse direction. The light source window (706) is directly opposite the first viewing window (501) of the sheet light source explosion-proof box (5). The pressure plate (705) is fitted with a glass plate (707) at its bottom. The glass plate (707) is located in the field of view of the second window (601) of the explosion-proof box (6) of the high-speed camera. The hose is located between the pressure block (703) and the glass plate (707). The vertical lifting of the pressure block (703) can adjust the flow rate of the hose.

4. The liquid material process equivalent stimulation simulation device as described in claim 1, characterized in that, It also includes a support frame (8), which includes a horizontal support frame (801), a vertical support frame (802) fixedly installed at the longitudinal rear of the horizontal support frame (801), a liquid tank mounting bracket (803) provided at the longitudinal rear of the vertical support frame (802), and a horizontal moving component (804) provided on the horizontal support frame (801). The test pipeline assembly (1) is installed inside the vertical support frame (802); a sheet light source explosion-proof box (5) is installed on the top of the vertical support frame (802); a liquid tank (2) is installed on the liquid tank mounting bracket (803); and a high-speed camera explosion-proof box (6) is installed on the horizontal moving assembly (804).

5. The liquid material process equivalent stimulation simulation device as described in claim 4, characterized in that, Preferably, the horizontal moving component (804) includes a pair of longitudinal slide rails (80401) arranged longitudinally on the horizontal support frame (801), and a longitudinal moving plate (80402) capable of sliding longitudinally is mounted on the pair of longitudinal slide rails (80401); a pair of transverse slide rails (80403) are arranged transversely on the longitudinal moving plate (80402), and a transverse moving plate (80404) capable of sliding transversely is mounted on the pair of transverse slide rails (80403), and a high-speed camera explosion-proof box (6) is mounted on the transverse moving plate (80404).

6. The liquid material process equivalent stimulation simulation device as described in claim 4, characterized in that, The vertical support frame (802) is provided with a handle (805) at its longitudinal rear, and the horizontal support frame (801) is provided with casters (806) at its bottom.

7. The liquid material process equivalent stimulation simulation device as described in claim 4, characterized in that, A back plate (9) is also installed on the vertical support frame (802), and the back plate (9) is located at the longitudinal rear of the transparent test pipe (104).

8. The liquid material process equivalent stimulation simulation device as described in claim 1, characterized in that, The explosion-proof box (5) for the light source is also provided with two first compressed air ports (502), and the explosion-proof box (6) for the high-speed camera is also provided with two second compressed air ports (602).

9. A method for simulating equivalent stimuli in a liquid material processing procedure, characterized in that, This method employs the equivalent stimulus simulation device for liquid material processing as described in any one of claims 1 to 8; The method includes the following steps: Step S1: Inject test liquid containing tracer particles into one liquid tank (2), and use another liquid tank (2) as a receiving container; Step S2: Adjust the two vacuum pressure valves (3) to form a pressure difference between the two liquid tanks (2) and drive the test liquid to flow through the transparent test pipe (104); Step S3: Activate the sheet light source in the sheet light source explosion-proof box (5) to project the sheet light source into the optical observation area of ​​the transparent test pipe (104); Step S4: Simultaneously start the high-speed camera in the explosion-proof box (6) of the high-speed camera, and adjust the second window (601) of the explosion-proof box (6) of the high-speed camera by adjusting the horizontal moving component (804) so ​​that it is aligned with the optical observation area of ​​the transparent test pipe (104) to capture the motion image of the tracer particles flowing through the optical observation area of ​​the transparent test pipe (104). Step S5: Based on motion image analysis, test the flow velocity field, eddy distribution, and flow characteristics of the pipe bend area of ​​the liquid.

10. The equivalent stimulus simulation method for liquid material processing as described in claim 9, characterized in that, When the transparent test pipe (104) is a flexible tube fitted with a clamp valve (7), step S6 is also included; Step S6 includes the following steps: Step S601: Fix the pressure difference between the two liquid tanks (2) and set the delivery pressure P. 输送 ; In step S602, the cylinder (702) driving air pressure P of the clamp valve (7) is increased at a constant rate. 气缸 Simultaneously monitor the liquid flow rate inside the hose; Step S603: When the flow rate drops to a predetermined threshold, record the driving air pressure P of the cylinder (702) at this time. 临界 ; Step S604, based on formula F 闭合 =P 临界 ×A 活塞 Calculate the mechanical clamping force required for the pinch valve (7) to fully close, where F 闭合 A is the mechanical clamping force required for the pinch valve to fully close. 活塞 The effective piston area of ​​cylinder (702); Step S605, iterate through different delivery pressures P 输送 Given the hose diameter D and hose material type, repeat steps S601-S604 to generate a closure characteristic database.

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