Efficient drag reducer performance evaluation device

Abstract

The utility model belongs to the field of performance evaluation of drag reducers, and particularly relates to a high-efficiency performance evaluation device for a drag reducer, which aims at solving the problem that an indoor loop evaluation method in the prior art is complicated, and comprises a visual liquid storage tank, a valve assembly, a stirring system, a control system, a weighing device, a test tube and a vacuumizing system, the vacuumizing system is connected with the visual liquid storage tank, the output end of the stirring system extends into the visual liquid storage tank, the control system is connected with the valve assembly and can control on-off of the valve assembly, the bottom of the visual liquid storage tank is communicated with one end of the testing pipe, and the other end of the testing pipe extends to the weighing device. The device integrates a vacuumizing system, a control system, a stirring system, a visual liquid storage tank and the like, is designed according to the characteristics of the drag reducer, and can realize rapid and accurate performance evaluation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of performance evaluation of drag reduction agent, and particularly relates to a high-efficiency drag reduction agent performance evaluation device. BACKGROUND

[0002] Drag reduction agent is a high molecular compound with the function of reducing resistance. When it is added to fluid during fluid transportation, the effects of increasing flow and reducing energy consumption can be achieved. In practical application, a small amount of drag reduction agent can significantly increase transportation flow and reduce transportation cost, showing its important role in improving economic benefits. With the increasing application range of drag reduction agent, the effect evaluation in practical application has become an indispensable part of field test and application process. Therefore, effective evaluation of the performance of drag reduction agent is particularly important.

[0003] The existing indoor loop evaluation method has many problems, such as complexity, time-consuming, safety, high construction and operation cost. In view of the above problems of the loop, it is urgent to develop a more efficient, accurate and safe drag reduction agent performance evaluation device. UTILITY MODEL CONTENT

[0004] In order to solve the problem of complex indoor loop evaluation method in the prior art, the utility model provides a high-efficiency drag reduction agent performance evaluation device, which comprises a visual liquid storage tank, a valve assembly, a stirring system, a control system, a weighing device, a test tube and a vacuum pumping system.

[0005] The vacuum pumping system is connected with the visual liquid storage tank, the output end of the stirring system extends into the visual liquid storage tank, the control system is connected with the valve assembly and can control the on-off of the valve assembly, the bottom of the visual liquid storage tank is communicated with one end of the test tube, and the other end of the test tube extends to the weighing device.

[0006] According to the high-efficiency drag reduction agent performance evaluation device provided by some embodiments of the present application, the valve assembly comprises a first valve, one end of the first valve is communicated with the visual liquid storage tank, and the other end of the first valve is communicated with a test sample container.

[0007] According to the high-efficiency drag reduction agent performance evaluation device provided by some embodiments of the present application, the valve assembly further comprises a second valve, one end of the second valve is communicated with the visual liquid storage tank, and the other end of the second valve is communicated with a cleaning solvent container.

[0008] According to the high-efficiency drag reduction agent performance evaluation device provided by some embodiments of the present application, the valve assembly further comprises a third valve, and the third valve is arranged on the test tube.

[0009] According to some embodiments of the present application, a high-efficiency drag reducer performance evaluation device is provided, wherein the first valve, the second valve and the third valve are electrically controlled valves.

[0010] According to some embodiments of the present application, a high-efficiency drag reducer performance evaluation device is provided, wherein the stirring system is a high-speed magnetic stirrer.

[0011] According to some embodiments of the present application, a high-efficiency drag reducer performance evaluation device is provided, wherein the visible liquid storage tank is made of high-strength borosilicate glass.

[0012] According to some embodiments of the present application, a high-efficiency drag reducer performance evaluation device is provided, wherein the vacuum pumping system is a rotary vane high-efficiency vacuum pump.

[0013] The present application has the following beneficial effects:

[0014] The device integrates a vacuum pumping system, a control system, a stirring system and a visible liquid storage tank, and is designed according to the characteristics of the drag reducer. The device can flexibly set the flow time according to the type, dosage and solvent of the drag reducer, control the movement of the fluid in the visible liquid storage tank through the control system, and make the non-drag reduction and drag reduction fluid pass through the same vertical pipe section under the same gravitational acceleration. The mass of the two is weighed and the corresponding calculation method is used to obtain the drag reduction rate, so as to realize fast and accurate performance evaluation.

[0015] This flexible test time and efficient detection method not only improves the detection efficiency of the drag reduction rate, but also adjusts the production process by comparing the drag reduction rates of different batches of products, ensures the production and quality stability of the drag reducer product, and enhances the market competitiveness of the product.

[0016] Using the device can evaluate the performance of the drag reducer at low cost, quickly and accurately, is simple to use, and can give quality information of multiple production batches of drag reducers in a short time. By comparing the product quality to continuously adjust the production process, on the one hand, the production stability of the drag reducer product quality is ensured, and on the other hand, the efficiency of improving the production process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:

[0018] Fig. 1 is a structural schematic diagram of some embodiments of the present application;

[0019] Fig. 2 is a valve assembly position schematic diagram of some embodiments of the present application;

[0020] Fig. 3 is a stirring system schematic diagram of some embodiments of the present application.

[0021] In the diagram: 1. Visual storage tank; 2. Valve assembly; 21. First valve; 22. Second valve; 23. Third valve; 3. Stirring system; 4. Control system; 5. Weighing device; 6. Test tube. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] like Figs. 1-3 As shown, this utility model provides a high-efficiency drag-reducing agent performance evaluation device, including a visible storage tank 1, a valve assembly 2, a stirring system 3, a control system 4, a weighing device 5, a test tube 6, and a vacuum system:

[0025] The vacuum system is connected to the visible liquid storage tank 1, the output end of the stirring system 3 extends into the visible liquid storage tank 1, the control system 4 is connected to the valve assembly 2 and can control the opening and closing of the valve assembly 2, the bottom of the visible liquid storage tank 1 is connected to one end of the test tube 6, and the other end of the test tube 6 extends to the weighing device 5.

[0026] In practice, the vacuum system can extract the gas from the visible liquid storage tank 1 to achieve the required vacuum level. The stirring system 3 adds the test sample to the visible liquid storage tank and mixes it thoroughly. The control system 4 controls the opening and closing sequence and timing of the valve assembly 2 so that the mixed fluid passes through the visible liquid storage tank 1 and the test tube 6 in sequence. A beaker is set on the weighing device 5, and the fluid enters the beaker from the test tube 6. Specifically, the test tube 6 is set vertically, with its top connected to the bottom of the visible liquid storage tank 1 and its bottom extending to the opening of the beaker on the weighing device 5.

[0027] In some embodiments, the valve assembly 2 includes a first valve 21, a second valve 22 and a third valve 23. One end of the first valve 21 is connected to the visible liquid storage tank 1 and the other end is connected to the test sample container. One end of the second valve 22 is connected to the visible liquid storage tank 1 and the other end is connected to the cleaning solvent container. The third valve 23 is disposed on the test tube 6.

[0028] In specific implementation, the medium in the test sample container can enter the visible liquid tank 1 through the first valve 21, the cleaning solvent can enter the visible liquid tank 1 through the second valve 22, the fluid in the visible liquid tank 1 can enter the test tube 6, and the fluid can enter the beaker on the weighing device 5 through the third valve 23 on the test tube.

[0029] In some embodiments, the first valve 21, the second valve 22, and the third valve 23 are electrically controlled valves.

[0030] In specific implementation, the valve assembly 2 is an electric ball valve, the working pressure is ≤1 MPa, the working temperature is 0-150℃, the control mode is PLC control, the weighing device 5 is an electronic precision balance, the weighing range is 0-5000g, the weighing accuracy is ±0.01g, and the power supply is AC 220V, 50Hz.

[0031] Specifically, the flow of the fluid in the visible liquid tank and the test tube section is accurately controlled through the electrically controlled valve. The mass of the fluid is accurately quantified through the electronic balance.

[0032] In some embodiments, the vacuum pumping system is a high-efficiency rotary vane vacuum pump.

[0033] In specific implementation, the maximum pumping rate of the vacuum pumping system can reach 50L / min, the ultimate vacuum degree is ≤1Pa, the power supply is AC 220V, 50Hz, the gas in the visible liquid tank 1 can be pumped out in a short time to reach the required vacuum degree, and the purity and stability of the test environment are ensured. The connection between the vacuum pumping system and the visible liquid tank 1, the two ends of each valve, and the vertical test tube 6 are all made of 304 stainless steel pipes with an outer diameter of 10mm, an inner diameter of 8mm, and a wall thickness of 2mm. In addition, the length and layout of the pipeline need to be reasonably designed according to the actual situation of the equipment to ensure the continuity and stability of the fluid flow.

[0034] In some embodiments, the control system 4 adopts an advanced PLC programmable logic controller, the specific model of the PLC is Siemens S7-200, the control accuracy is ±0.1 seconds, the input / output point number is 24DI / 16DO, the power supply is DC 24V, and the time control function has high precision. The fluid movement time can be flexibly set according to the specific conditions of the types of drag reduction agents, the addition amount, and the solvent, and the error is not more than ±0.1 seconds. At the same time, the system also has remote monitoring and fault diagnosis functions, which facilitates remote operation and fault troubleshooting of users.

[0035] In some embodiments, the stirring system 3 is a high-speed magnetic stirrer.

[0036] In specific implementation, the stirring speed of the stirring system 3 can be adjusted in the range of 0-1000 rpm, which can sufficiently mix the drag reducer and the solvent, and ensure the accuracy and reliability of the test. The stirrer is equipped with a stainless steel stirring paddle, which is corrosion-resistant and has a long service life.

[0037] In some embodiments, the visual liquid storage tank 1 is made of high-strength borosilicate glass.

[0038] In specific implementation, the visual liquid storage tank 1 has high heat resistance, high transparency, low thermal expansion coefficient, and good chemical stability, and is very suitable for use in high-temperature, high-pressure, and acid-base working environments in the laboratory. The maximum capacity of the tank can reach 5L, the inside of the tank body is polished to high precision, there is no dead angle, and the fluid movement can be easily observed. The tank body is equipped with an accurate liquid level indicator, which can display the fluid level in real time.

[0039] The working principle of the present application is as follows:

[0040] Prepare the test sample: according to the specific requirements of the type of drag reducer, the dosage of the additive, and the solvent, accurately weigh the required amount of drag reducer and solvent, and mix them uniformly to form the test sample.

[0041] Set the test parameters: enter the specific information of the test sample in the control system 4, and set the test time, temperature, pressure, and other parameters.

[0042] Start the vacuum pumping system: pump out the gas in the visual liquid storage tank to the required vacuum degree.

[0043] Start the stirring system 3: add the test sample to the visual liquid storage tank, and start the stirring system 3 to mix thoroughly.

[0044] Control the fluid flow: control the opening and closing sequence and time of the valve assembly 2 through the control system 4, so that the fluid flows through the visual liquid storage tank and the test pipe section in turn.

[0045] Collect data: during the test, use a weighing balance to measure the mass of the outflowing fluid, and record the data.

[0046] Calculate the drag reduction rate: according to the collected data, calculate the drag reduction rate to evaluate the performance of the drag reducer.

[0047] The device can quickly and accurately evaluate the performance of the drag reducer in a short time, improve the detection efficiency, optimize the test process, reduce the dependence on external resources, reduce the test cost, and perform the test in a closed environment to avoid safety hazards. The test parameters can be flexibly set according to the specific conditions of the type of drag reducer, the dosage of the additive, and the solvent, and the fluid movement can be observed through the visual liquid storage tank to ensure the visualization of the test process.

[0048] In specific implementation, the preparation method of the test sample is as follows: 0.5-1 g of the drag reducer sample is dissolved in 200-300 g of the solvent. If the prepared sample still has too large viscosity to be tested, 30-50 g of the solution obtained in the previous step is dissolved in 100-200 g of the solvent, and then the test is performed.

[0049] The specific operation steps are as follows:

[0050] S1, preparing the test sample and the solvent:

[0051] According to the specific requirements of the type of the drag reducer (such as polymer type, surfactant type, etc.), the dosage (prepared according to a certain proportion), and the selected solvent (such as water, alcohol, etc.), the required amount of the drag reducer and the solvent is accurately weighed.

[0052] The drag reducer and the solvent are mixed in a clean beaker or container to ensure that they are fully dissolved or dispersed uniformly to form the test sample to be tested.

[0053] At the same time, an appropriate amount of cleaning solvent is prepared for cleaning the storage tank before and after the test to ensure the accuracy of the test results.

[0054] S2, setting the automatic valve assembly 2 and the visible liquid storage tank 1:

[0055] The first valve 21 and the second valve 22 are used to control the entry and exit of the test sample and the cleaning solvent in the visible liquid storage tank 1. It is ensured that the first valve 21 is connected to the test sample container, and the second valve 22 is connected to the cleaning solvent container.

[0056] The cleanliness and sealing property of the visible liquid storage tank 1 are checked to ensure that there is no residual material affecting the test results.

[0057] The valve opening and closing sequence and time are preset in the control system 4 to automatically complete the cleaning and sample feeding process.

[0058] S3, entering the test information and setting the test parameters:

[0059] The specific information of the test sample is entered in the control system 4, including the type of the drag reducer, the dosage, the type of the solvent, etc.

[0060] The test time, temperature, pressure, and other parameters are set according to the experimental requirements to ensure the consistency of the test conditions.

[0061] The opening and closing time of the first valve 21 and the second valve 22, and the opening time of the third valve 23 (assuming that it is a test outlet valve) are set to control the test process.

[0062] S4, performing the cleaning and sample feeding operation:

[0063] The control system 4 sends instructions to first open the second valve 22 to introduce the cleaning solvent to clean the visual reservoir, ensuring no residue from the previous test.

[0064] After cleaning, the second valve 22 is closed and the first valve 21 is opened to introduce the test sample into the visual reservoir 1.

[0065] The sample in the visual reservoir is monitored to ensure uniform distribution and no air bubbles.

[0066] S5, Test and data collection:

[0067] When the test sample is ready, the control system opens the third valve 23 to allow the sample to flow through the friction tube for testing.

[0068] During testing, a beaker is used to collect the fluid flowing from the friction tube, and a balance is used to accurately weigh its mass.

[0069] The mass information of the test fluid is recorded, including the initial mass, mass change after testing, etc., to calculate the drag reduction rate.

[0070] S6, Enter test results and prepare for the next test:

[0071] The test results (such as drag reduction rate, fluid mass change, etc.) are entered into the computer for data processing and analysis.

[0072] Clean the visual reservoir 1 and all related equipment to ensure no residue affects the next test.

[0073] Adjust test parameters or prepare new test samples as needed to prepare for the next test.

[0074] Through the above six steps, the test process of the high-efficiency drag reducer performance evaluation device can be ensured to be accurate, reliable and efficient.

[0075] Specifically, the calculation method and formula of the drag reduction rate are as follows:

[0076] The calculation principle of the device is based on the mass difference between non-drag reduction fluid and drag reduction fluid during testing. First, the mass of non-drag reduction fluid and drag reduction fluid after passing through the same vertical pipe section under the same time condition is measured. Let the initial mass of non-drag reduction fluid be m1, and the mass after passing through the pipe section be m1'; the initial mass of drag reduction fluid be m2, and the mass after passing through the pipe section be m2'. Since the initial mass m1 and m2 are accurately weighed before testing, and theoretically should be equal (to ensure the fairness of the test, i.e. the amount of non-drag reduction fluid and drag reduction fluid at the beginning of the test is consistent), m0 can be used to represent this common initial mass, i.e. m1 = m2 = m0.

[0077] Next, the mass loss of the two fluids after passing through the pipe section is calculated, which can reflect the size of the resistance the fluids experience during flow. The mass loss of the non-drag reduction fluid is Δm1 = m1 - m1', and the mass loss of the drag reduction fluid is Δm2 = m2 - m2'. Since the initial masses are equal, the mass loss can also be directly represented by m0 - m1' and m0 - m2'.

[0078] Finally, the drag reduction rate is calculated based on the mass loss. The drag reduction rate is defined as the percentage of the mass loss reduction of the drag reduction fluid relative to the non-drag reduction fluid during flow. Therefore, the calculation formula of the drag reduction rate R is:

[0079] Formula: R = [(Δm1 - Δm2) / Δm1] × 100% = [(m0 - m1')

[0080] - (m0 - m2')] / (m0 - m1') × 100% = [(m2' - m1') / (m0 - m1')] × 100%

[0081] Or, since the initial masses are equal, it can also be simplified as:

[0082] R = (m2' - m1') / [m0 - (m1' or m2' (in the case of equal initial mass))] × 100% = (m2' - m1') / [Δm1 (or Δm1 ≈ Δm2 in ideal cases)] × 100%.

[0083] However, it should be noted that in actual tests, due to various factors (such as fluid viscosity, pipe wall roughness, and incomplete consistency of test conditions), Δm1 and Δm2 may not be exactly equal. Therefore, when calculating the drag reduction rate, the respective mass loss values should be used directly for calculation to ensure the accuracy of the results. Finally, the size of the drag reduction rate is used to evaluate the performance of the drag reduction agent, i.e. the higher the drag reduction rate, the stronger the drag reduction performance, and vice versa.

[0084] In addition, it should be noted that during the calculation process, all mass measurements should be accurate, and the test conditions (such as temperature, pressure, flow rate, etc.) should be consistent to eliminate the influence of external factors on the test results.

[0085] In the description of the present application, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0086] In addition, it also needs to be explained that, in the description of the utility model, unless there is another explicit provision and limitation, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0087] The term "comprising" or any other similar word is intended to cover non-exclusive inclusion, so that the process, method, article or equipment / device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in the process, method, article or equipment / device.

[0088] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without deviating from the principles of the utility model, and the technical schemes after the changes or replacements will fall within the protection scope of the utility model.

Claims

1. A device for evaluating the performance of a high efficiency drag reducer, characterized by, The device comprises a visual liquid storage tank (1), a valve assembly (2), a stirring system (3), a control system (4), a weighing device (5), a test tube (6) and a vacuum system: The vacuum system is connected with the visual liquid storage tank (1), the output end of the stirring system (3) extends into the visual liquid storage tank (1), the control system (4) is connected with the valve assembly (2) and can control the on-off of the valve assembly (2), the bottom of the visual liquid storage tank (1) is communicated with one end of the test tube (6), and the other end of the test tube (6) extends to the weighing device (5).

2. The device for evaluating the performance of a high-efficiency drag reducer according to claim 1, wherein The valve assembly (2) comprises a first valve (21), one end of the first valve (21) is communicated with the visual liquid storage tank (1), and the other end is communicated with a test sample container.

3. The device for evaluating the performance of a high-efficiency drag reducer according to claim 2, wherein The valve assembly (2) further comprises a second valve (22), one end of the second valve (22) is communicated with the visual liquid storage tank (1), and the other end of the second valve is communicated with a cleaning solvent container.

4. The device for evaluating the performance of a high-efficiency drag reducer according to claim 3, wherein The valve assembly (2) further comprises a third valve (23), which is arranged on the test tube (6).

5. The device for evaluating the performance of a high-efficiency drag reducer according to claim 4, wherein The first valve (21), the second valve (22) and the third valve (23) are electrically controlled valves.

6. The device for evaluating the performance of a high-efficiency drag reducer according to claim 1, wherein The stirring system (3) is a high-speed magnetic stirrer.

7. The device for evaluating the performance of a high-efficiency drag reducer according to claim 1, wherein The visual liquid storage tank (1) is a liquid storage tank made of high-strength borosilicate glass.

8. The device for evaluating the performance of a high-efficiency drag reducer according to claim 1, wherein The vacuum system is a rotary vane high-efficiency vacuum pump.

Images