Automated foam performance detection device and working method

Abstract

The present invention discloses an automated foam performance detection device, comprising a tank body, a bubbler tube is arranged in the center of the inner cavity of the tank body, the tank body is respectively connected to a liquid inlet system, a temperature control system, a bubbler system and a liquid discharge system, and an infrared signal system is also arranged on the tank body; the liquid inlet system comprises a water tank, a surfactant storage tank and a foam stabilizer storage tank, and the water tank, the surfactant storage tank and the foam stabilizer storage tank are all connected to the upper part of the bubbler tube; the temperature control system comprises a water bath, and the water bath is arranged on the lower outer side of the bubbler tube; the bubbler system comprises a gas cylinder, and the gas cylinder is connected to the bubbler tube through a gas delivery pipeline. The present invention adopts the method of upper liquid inlet and bottom gas distribution, which has the advantages of more uniform and dense foaming, rapid foaming and high foaming efficiency. In combination with the infrared signal system, the foam after foaming can be detected with high precision; the present invention has a high degree of intelligence, and can realize the integrated process of self-cleaning before foaming, during foaming and after foaming.

Description

Technical Field

[0001] The invention relates to the field of foam determination, in particular to an automatic foam performance detection device and a working method of the automatic foam performance detection device. Background Art

[0002] At present, coal is the main energy source in my country, and the safety of its production process is particularly important. Gas, as a byproduct of coal, is the main factor causing gas explosions, gas asphyxiation and gas outburst accidents. Therefore, it is crucial to reduce the gas concentration in mines and ensure the safety of minerals and personnel.

[0003] In the treatment of coal seam gas disasters, fracturing coal seams, increasing coal seam permeability, and extracting and unloading gas are currently hot research topics and frontiers at home and abroad. Many scholars have achieved a series of results in protective layer mining, hydraulic fracturing, displacement extraction, etc., but there are also some corresponding scopes of application and shortcomings. For example, protective layer mining is affected by factors such as coal seam spacing, coal seam occurrence conditions, and coal seam mining range, and its scope of application is limited. Although hydraulic fracturing can produce a large number of cracks, the direction of hydraulic fractures is always along the direction of the maximum principal stress, and the direction is single, which is not suitable for coal seams with complex structures and developed natural fractures and faults.

[0004] As an emerging fracturing technology, CO2 foam fracturing technology can effectively reduce gas hazards. CO2 foam can expand to form multi-directional cracks during coal seam fracturing, and its good sand suspension can also ensure that the proppant can consolidate the cracks in the coal seam, forming a channel for gas migration, preventing the healing of cracks caused by ground stress and the blockage of gas migration channels, which is conducive to gas pressure relief and the reduction of coal seam outburst hazards. At present, researchers' research on CO2 foam fracturing technology mainly focuses on the optimization of foaming agents and foam stabilizers. In order to obtain better fracturing effects, it is undoubtedly necessary to equip appropriate CO2 foam fracturing fluid according to the coalbed methane storage conditions.

[0005] In the process of developing CO2 foam fracturing fluid, the detection of foam performance is particularly important, which can effectively examine the performance of CO2 foam fracturing fluid. Most of the existing foam performance detection devices have problems such as the detection device is placed in a constant temperature box, the experimental process cannot be observed in real time, the detection accuracy is low, the degree of automation is low, and the detection is time-consuming and labor-intensive. Summary of the invention

[0006] Based on the above technical problems, the present invention proposes an automated foam performance detection device and a working method.

[0007] The technical solution adopted by the present invention is:

[0008] An automated foam performance testing device comprises a tank body, a foaming tube is arranged in the center of the inner cavity of the tank body, the tank body is respectively connected to a liquid inlet system, a temperature control system, a foaming system and a liquid discharge system, and an infrared signal system is also arranged on the tank body;

[0009] The liquid inlet system includes a water tank, a surfactant storage tank and a foam stabilizer storage tank, the water tank is connected to the upper part of the bubble tube through a first water delivery pipeline, the surfactant storage tank is connected to the upper part of the bubble tube through a surfactant delivery pipeline, and the foam stabilizer storage tank is connected to the upper part of the bubble tube through a foam stabilizer delivery pipeline;

[0010] The temperature control system comprises a water bath, which is arranged outside the lower part of the bubble tube, the water tank is connected to the water bath through a second water delivery pipeline, and a resistance wire and a temperature sensor are arranged inside the water bath;

[0011] The bubbler system comprises a gas cylinder, which is connected to a bubbler pipe through a gas delivery pipeline, an inverted cone barrel is arranged at the bottom of the bubbler pipe, the top of the inverted cone barrel is connected to the bubbler pipe, and a gas-liquid separation membrane is arranged at the connection between the inverted cone barrel and the bubbler pipe, and the bottom of the inverted cone barrel is connected to the outlet end of the gas delivery pipeline;

[0012] A stirrer is also provided inside the bubble tube;

[0013] The drainage system comprises a first drainage pipe and a second drainage pipe, the first drainage pipe is connected to the drainage port at the bottom of the bubble tube, and the second drainage pipe is connected to the drainage port at the bottom of the water bath;

[0014] The infrared signal system comprises an infrared signal transmitter and an infrared signal receiver, and the infrared signal transmitter and the infrared signal receiver are symmetrically installed on both sides of the tube wall of the bubble tube.

[0015] Preferably, the detection device also includes a cleaning system, which includes a hydraulic device, which is connected to a cleaning brush via a telescopic rod, the telescopic rod is arranged along the axial direction of the bubble tube, the cleaning brush is arranged along the circumferential direction of the bubble tube, and the cleaning brush is in contact with the inner wall of the bubble tube.

[0016] Preferably, a first liquid inlet pump, a first solenoid valve and a first flowmeter are arranged on the first water delivery pipeline; a second solenoid valve and a second flowmeter are arranged on the surfactant delivery pipeline; a third solenoid valve and a third flowmeter are arranged on the foam stabilizer delivery pipeline; the first liquid inlet pump, the first solenoid valve, the first flowmeter, the second solenoid valve, the second flowmeter, the third solenoid valve and the third flowmeter are all connected to the automatic feeding module;

[0017] A second liquid inlet pump, a fourth solenoid valve and a fourth flow meter are arranged on the second water delivery pipeline, and the second liquid inlet pump, the fourth solenoid valve and the fourth flow meter are also connected to the automatic feeding module;

[0018] The resistance wire and the temperature sensor are connected to a temperature control module;

[0019] A fifth solenoid valve and a fifth flow meter are arranged on the gas delivery pipeline, and the fifth solenoid valve and the fifth flow meter are connected to the automatic air intake module;

[0020] A sixth solenoid valve and a sixth flowmeter are arranged on the first liquid discharge pipeline, a seventh solenoid valve and a seventh flowmeter are arranged on the second liquid discharge pipeline, and the sixth solenoid valve, the sixth flowmeter, the seventh solenoid valve and the seventh flowmeter are all connected to the automatic liquid discharge module;

[0021] The infrared signal receiver is connected to the infrared signal processing module;

[0022] The automatic feeding module, the temperature control module, the automatic air intake module, the automatic liquid discharge module and the infrared signal processing module are all connected to the computer.

[0023] Preferably, the tank body and the bubbler tube are both made of transparent materials.

[0024] Preferably, a scale is provided on the tube wall of the bubble tube.

[0025] Preferably, the bottom plate of the bubble tube is provided with regularly distributed circular holes of equal diameter, and the gas-liquid separation membrane is covered on the top of the bottom plate.

[0026] Preferably, the stirrer is a magnetic stirrer, which is arranged at the bottom of the bubble tube.

[0027] Preferably, the cleaning brush is provided with through holes for facilitating the passage of the ends of the first water delivery pipeline, the surfactant delivery pipeline and the foam stabilizer delivery pipeline.

[0028] Preferably, the infrared signal transmitters and infrared signal receivers are provided in three groups in total and are arranged at intervals along the circumference of the outer wall of the bubbler tube.

[0029] A working method of an automated foam performance testing device comprises the following steps:

[0030] (1) When the detection device is working, the computer first starts the liquid inlet system, the automatic feeding module opens the first solenoid valve, and by adjusting the first flow meter, the water in the water tank is injected into the bubble tube through the first water delivery pipe; at the same time, the fourth solenoid valve is opened, and an appropriate amount of water is injected into the water bath through the second water delivery pipe. The computer controls the temperature control module to heat the water through the resistance wire. After the water in the water bath is heated to a preset temperature, the temperature sensor is fed back to the computer through the temperature control module, and the water bath maintains a constant temperature state;

[0031] (2) After reaching the predetermined temperature, the automatic feeding module opens the second solenoid valve and the third solenoid valve respectively, and adds the surfactant to the bubble tube through the surfactant delivery pipeline, and adds the foaming agent to the bubble tube through the foam stabilizer delivery pipeline; the computer controls the second flow meter and the third flow meter through the automatic feeding module to control the liquid inflow and flow rate of the surfactant and the foam stabilizer respectively, and the surfactant and the foam stabilizer enter the bubble tube and mix with the preheated water;

[0032] (3) Start the bubbler system. The computer opens the fifth solenoid valve through the automatic air intake module. The gas cylinder supplies gas to the bubbler tube through the gas delivery pipeline, and the gas flow rate is controlled by the fifth flow meter. The gas enters the inverted cone barrel from the gas cylinder through the gas delivery pipeline and diffuses upward evenly. The gas passes through the circular hole on the bottom of the bubbler tube and the gas-liquid separation membrane and evenly penetrates into the bubbler tube;

[0033] (4) Turn on the agitator, and the surfactant, foam stabilizer, water, and gas are foamed in the foaming tube. During the foaming process, the computer starts the infrared signal system, records the foaming height through the infrared signal transmitter and the infrared signal receiver, and transmits it to the infrared signal processing module, which feeds back to the computer for data processing;

[0034] (5) After the test is completed, the drainage system is started, and the computer controls the automatic drainage module to open the sixth solenoid valve and the seventh solenoid valve to discharge the water in the bubble tube and the water bath through the first drainage pipe and the second drainage pipe respectively;

[0035] (6) Finally, the self-cleaning system is started. The computer controls the hydraulic device through the self-cleaning module. The hydraulic device controls the telescopic movement of the telescopic rod, thereby driving the cleaning brush to clean the inner wall of the bubble tube.

[0036] The beneficial technical effects of the present invention are:

[0037] The present invention adopts a gas-liquid separation membrane, liquid is introduced from the top, and gas is distributed at the bottom, so that the foaming is more uniform, dense, rapid, and efficient. In combination with an infrared signal system, the foam after foaming can be detected with high precision. Moreover, the tank body and the bubble tube are both made of transparent materials, and a constant temperature water bath is used at the bottom. Compared with placing the detection device in a constant temperature box, the present invention can facilitate experimenters to observe and record the whole process. While ensuring that the experimental data are accurate, the operation is simpler and more convenient, and the experimental efficiency is higher.

[0038] The present invention uses an infrared sensing system to test the foaming height and defoaming time, adds three sets of infrared signal transmitters and infrared signal receivers, and detects the foam in the foaming tube in all directions. As time goes by, the foam gradually breaks, and the infrared rays can pass through the foaming tube and be received by the infrared signal receiver on the other side and transmitted to the infrared signal processing module. The foam height and defoaming time at this time will be recorded and displayed on the computer. The present invention has fast and accurate test results, saves a lot of manpower and time, and has a simple structure, is easy to install and disassemble, and is easy to use.

[0039] The present invention adds a self-cleaning system. In the past, the foam tester needed to manually dismantle the foam tester tube after the test to achieve the cleaning purpose. After the foaming was completed, some residual organic matter adhered to the foaming tube wall, which was not easy to remove and affected the next test result. The present invention adds a self-cleaning system, which uses a hydraulic device to drive the telescopic rod, and a cleaning brush is connected to the bottom end of the telescopic rod to automatically clean the tube wall of the foaming tube, making the experimental operation simpler and more convenient, and the experimental efficiency is higher, and the experimental errors caused by unclean manual cleaning can be avoided.

[0040] The present invention adds a temperature control system, which can simulate the foaming process under different temperature environments by setting different temperatures on a computer, thereby expanding the application range of the device.

[0041] The present invention has a high degree of intelligence and can realize an integrated process of before foaming - during foaming - self-cleaning after foaming, and can quickly test the foam performance with high test result accuracy, and effectively improves the test efficiency, saves a lot of manpower and time, and greatly reduces the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0043] Figure 1 It is a schematic diagram of the structural principle of the present invention;

[0044] Figure 2 It is a partial structural schematic diagram of the detection device of the present invention, mainly showing the upper structure of the tank body;

[0045] Figure 3 It is a partial structural schematic diagram of the detection device of the present invention, mainly showing the lower structure of the tank body;

[0046] Figure 4 It is a cross-sectional view of the bottom of the bubble tube in the detection device of the present invention.

[0047] In the figure: 1-tank body, 2-hydraulic device, 3-surfactant storage tank, 4-foam stabilizer storage tank, 5-telescopic rod, 6-cleaning brush, 7-infrared signal transmitter, 8-infrared signal receiver, 9-scale, 10-temperature sensor, 11-agitator, 12-resistance wire, 13-water bath, 14-water tank, 15-gas cylinder, 16-computer, 17-bubble tube, 18-gas-liquid separation membrane, 19-inverted cone cylinder; M1-self-cleaning module, M2-automatic feeding module, M3-temperature control module, M4-automatic liquid discharge module, M5-automatic air intake module Block, M6-infrared signal processing module; L1 and L2 are liquid inlets, N1, N2, N3, N4, N5 and N6 are liquid outlets; K1-first solenoid valve, K2-second solenoid valve, K3-third solenoid valve, K4-fourth solenoid valve, K5-fifth solenoid valve, K6-sixth solenoid valve, K7-seventh solenoid valve, S1-first flow meter, S2-second flow meter, S3-third flow meter, S4-fourth flow meter, S5-fifth flow meter, S6-sixth flow meter, S7-seventh flow meter, D1-first liquid inlet pump, D2-second liquid inlet pump. DETAILED DESCRIPTION

[0048] In conjunction with the accompanying drawings, an automated foam performance testing device includes a tank body 1, a bubbler tube 17 is arranged in the center of the inner cavity of the tank body 1, and the tank body 1 and the bubbler tube 17 are arranged vertically. The tank body 1 is respectively connected to a liquid inlet system, a temperature control system, a bubbler system and a liquid discharge system, and an infrared signal system is also arranged on the tank body. The liquid inlet system includes a water tank 14, a surfactant storage tank 3 and a foam stabilizer storage tank 4, the water tank 14 is connected to the upper part of the bubbler tube 17 through a first water delivery pipeline, the surfactant storage tank 3 is connected to the upper part of the bubbler tube 17 through a surfactant delivery pipeline, and the foam stabilizer storage tank 4 is connected to the upper part of the bubbler tube 17 through a foam stabilizer delivery pipeline. The temperature control system includes a water bath 13, the water bath 13 is arranged outside the lower part of the bubbler tube 17, that is, the lower part of the bubbler tube 17 is placed in the water bath 13, and the liquid in the bubbler tube can be kept at a constant temperature through the water bath 13, and the water bath 13 is not connected to the bubbler tube 17. The water tank 14 is connected to the water bath 13 through a second water delivery pipeline, and a resistance wire 12 and a temperature sensor 10 are arranged inside the water bath 13. The bubbling system includes a gas cylinder 15, which is connected to a bubbling tube 17 through a gas delivery pipeline, and an inverted cone barrel 19 is arranged at the bottom of the bubbling tube 17, and the top of the inverted cone barrel 19 is connected to the bubbling tube 17, and a gas-liquid separation membrane 18 is arranged at the connection between the inverted cone barrel 19 and the bubbling tube 17, and the bottom of the inverted cone barrel 19 is connected to the outlet end of the gas delivery pipeline. Through the arrangement of the gas-liquid separation membrane 18, the purpose of allowing gas to pass freely but liquid to not pass can be achieved, so that the gas in the gas cylinder 15 can be evenly distributed in the bubbling tube 17 from the bottom. A stirrer 11 is also arranged inside the bubbling tube 17. The drainage system includes a first drainage pipe and a second drainage pipe, the first drainage pipe is connected to the drainage port at the bottom of the bubble tube, and the second drainage pipe is connected to the drainage port at the bottom of the water bath. The infrared signal system includes an infrared signal transmitter 7 and an infrared signal receiver 8, and the infrared signal transmitter 7 and the infrared signal receiver 8 are symmetrically installed on both sides of the tube wall of the bubble tube.

[0049] The tank body 1 and the bubble tube 17 are both made of transparent materials. A scale 9 is provided on the tube wall of the bubble tube. Regularly distributed and equal-diameter circular holes are provided on the bottom plate of the bubble tube, and the gas-liquid separation membrane 18 is covered on the top of the bottom plate. The stirrer 11 is a magnetic stirrer, which is provided at the bottom of the bubble tube 17.

[0050] The present invention adopts a gas-liquid separation membrane 18, and performs liquid inlet at the top and gas distribution at the bottom, which has the advantages of more uniform and dense foaming, rapid foaming, and good foaming effect. In combination with an infrared signal system, the foam after foaming can be detected with high precision. Moreover, the tank body 1 and the bubble tube 17 are both made of transparent materials, and the bottom water bath 13 is used for constant temperature. Compared with putting the detection device into a constant temperature box, it is convenient for the experimenter to observe and record the whole process, ensuring that the obtained experimental data is accurate, and the operation is simpler and more convenient, and the experimental efficiency is higher.

[0051] As a further design of the present invention, the detection device also includes a cleaning system, which includes a hydraulic device 2, the hydraulic device 2 is connected to a cleaning brush 6 through a telescopic rod 5, the telescopic rod 5 is arranged along the axial direction of the bubble tube, the cleaning brush 6 is arranged along the circumferential direction of the bubble tube, and the cleaning brush 6 is in contact with the inner wall of the bubble tube 17. The hydraulic device 2 can be a hydraulic cylinder, etc. The hydraulic device 2 drives the cleaning brush 6 to reciprocate along the bubble tube 17 through the telescopic rod 5, thereby cleaning the inner wall of the bubble tube 17.

[0052] The present invention adds a self-cleaning system. In the past, the foam tester needed to manually clean the foam tester tube after the test, and some residual organic matter adhered to the foaming tube wall after the foaming was completed, which was not easy to remove and affected the next test result. The present invention adds a self-cleaning system, using the hydraulic device 2 to drive the telescopic rod 5, and the bottom end of the telescopic rod 5 is connected to a cleaning brush 6 to automatically clean the wall of the foaming tube, making the experimental operation simpler and more convenient, the experimental efficiency is higher, and the experimental error caused by unclean manual cleaning can be avoided.

[0053] Furthermore, a first liquid inlet pump D1, a first solenoid valve K1 and a first flowmeter S1 are provided on the first water delivery pipeline. A second solenoid valve K2 and a second flowmeter S2 are provided on the surfactant delivery pipeline. A third solenoid valve K3 and a third flowmeter S3 are provided on the foam stabilizer delivery pipeline. The first liquid inlet pump D1, the first solenoid valve K1, the first flowmeter S1, the second solenoid valve K2, the second flowmeter S2, the third solenoid valve K3 and the third flowmeter S3 are all connected to the automatic feeding module M2. A second liquid inlet pump D2, a fourth solenoid valve K4 and a fourth flowmeter S4 are provided on the second water delivery pipeline, and the second liquid inlet pump D2, the fourth solenoid valve K4 and the fourth flowmeter S4 are also connected to the automatic feeding module M2. The resistance wire 12 and the temperature sensor 10 are connected to the temperature control module M3. A fifth solenoid valve K5 and a fifth flowmeter S5 are provided on the gas delivery pipeline, and the fifth solenoid valve K5 and the fifth flowmeter S5 are connected to the automatic air intake module M5. The sixth solenoid valve K6 and the sixth flowmeter S6 are arranged on the first liquid discharge pipeline, and the seventh solenoid valve K7 and the seventh flowmeter S7 are arranged on the second liquid discharge pipeline. The sixth solenoid valve K6, the sixth flowmeter S6, the seventh solenoid valve K7 and the seventh flowmeter S7 are all connected to the automatic liquid discharge module M4. The infrared signal receiver 8 is connected to the infrared signal processing module M6. The hydraulic device 2 is connected to the self-cleaning module M1. The self-cleaning module M1, the automatic feeding module M2, the temperature control module M3, the automatic air intake module M5, the automatic liquid discharge module M4 and the infrared signal processing module M6 are all connected to the computer 16 through wires. The computer sends instructions to each module, and each module then feeds back data to the computer for data processing and analysis.

[0054] The present invention centrally controls the liquid inlet pump, solenoid valve and flow meter through a computer, has a high degree of intelligence, can realize the integrated process of before foaming - during foaming - self-cleaning after foaming, can quickly test the foam performance, the test result is highly accurate, and the test efficiency is effectively improved, a large amount of manpower and time are saved, and the test cost is greatly reduced.

[0055] Furthermore, the cleaning brush 6 is provided with a through hole for the ends of the first water delivery pipeline, the surfactant delivery pipeline and the foam stabilizer delivery pipeline to pass through, so that the cleaning brush and the water outlet ends of the first water delivery pipeline, the surfactant delivery pipeline and the foam stabilizer delivery pipeline do not interfere with each other.

[0056] Furthermore, the infrared signal transmitter 7 and the infrared signal receiver 8 are provided in three groups, and are arranged at intervals along the outer wall circumference of the bubble tube 17. The present invention uses an infrared sensing system to test the foaming height and defoaming time, and increases the infrared signal transmitter and the infrared signal receiver to three groups, so as to detect the foam in the bubble tube in all directions. When the foam just disappears, the infrared ray can pass through the bubble tube and be received by the infrared signal receiver on the other side, and then transmitted to the infrared signal processing module. At this time, the foam height and defoaming time will be recorded and displayed on the computer. The present invention has fast and accurate test results, saves a lot of manpower and time, and has a simple structure, is easy to install and disassemble, and is easy to use.

[0057] The automatic feeding module M2 and the self-cleaning module M1 are arranged at the top of the inner cavity of the tank body 1 , and the temperature control module M3 , the automatic liquid discharge module M4 and the automatic air intake module M5 are arranged at the bottom of the inner cavity of the tank body 1 .

[0058] The water tank 14 is arranged on the outside of the tank body 1, and the water tank 14 can provide water source or base liquid for the experiment. The liquid inlet system also includes liquid inlets L1, L2, liquid outlets N1, N2, N3, N4, and the liquid inlets L1 and L2 correspond to the inlet ends of the first water delivery pipeline and the second water delivery pipeline respectively. The liquid outlet N1 is at the end of the surfactant delivery pipeline, the liquid outlet N2 is at the end of the first water delivery pipeline, and the liquid outlet N3 is at the end of the foam stabilizer delivery pipeline. Among them, the outlet ends of the surfactant delivery pipeline, the first water delivery pipeline and the foam stabilizer delivery pipeline are all 60mm deep into the inner cavity of the bubbler tube. The height of the bubbler tube is 600mm. The liquid outlet N4 is at the outlet end of the second water delivery pipeline. The liquid outlet N5 is at the inlet end of the second drainage pipeline, and the liquid outlet N6 is at the inlet end of the first drainage pipeline.

[0059] The solenoid valve and flow meter are located on the pipeline, with the solenoid valve at the front and the flow meter at the back.

[0060] The present invention also provides a working method of the above-mentioned automatic foam performance detection device, comprising the following steps:

[0061] (1) When the detection device is working, the computer first starts the liquid inlet system, and the automatic feeding module M2 opens the first electromagnetic valve K1, and by adjusting the first flowmeter S1, the water in the water tank is injected into the bubble tube 17 through the first water delivery pipe. At the same time, the fourth electromagnetic valve K4 is opened, and an appropriate amount of water is injected into the water bath through the second water delivery pipe. The computer controls the temperature control module M3 to heat the water through the resistance wire 12. After the water in the water bath 13 is heated to a preset temperature, the temperature sensor 10 is fed back to the computer through the temperature control module M3, and the water bath maintains a constant temperature.

[0062] (2) After reaching the predetermined temperature, the automatic feeding module M2 opens the second solenoid valve K2 and the third solenoid valve K3, respectively, and adds the surfactant to the bubble tube 17 through the surfactant delivery pipeline, and adds the foaming agent to the bubble tube 17 through the foam stabilizer delivery pipeline. The computer controls the second flow meter S2 and the third flow meter S3 through the automatic feeding module M2 to control the liquid inflow and flow rate of the surfactant and the foam stabilizer, respectively, and the surfactant and the foam stabilizer enter the bubble tube 17 and mix with the preheated water.

[0063] (3) Start the bubble system. The computer opens the fifth solenoid valve K5 through the automatic air intake module M5. The gas cylinder 15 supplies gas to the bubble tube through the gas delivery pipeline, and the gas flow is controlled by the fifth flow meter S5. The gas enters the inverted cone barrel 19 from the gas cylinder through the gas delivery pipeline and diffuses upward evenly. The gas passes through the circular hole on the bottom of the bubble tube and the gas-liquid separation membrane 18 and evenly penetrates into the bubble tube 17.

[0064] (4) Turn on the agitator 11, and the surfactant, foam stabilizer, water, and gas are foamed in the foaming tube 17. During the foaming process, the computer starts the infrared signal system, and records the foaming height through the infrared signal transmitter 7 and the infrared signal receiver 8, and transmits it to the infrared signal processing module M6. The infrared signal processing module M6 feeds back to the computer for data processing.

[0065] (5) After the test is completed, the drainage system is started, and the computer controls the automatic drainage module M4 to open the sixth solenoid valve K6 and the seventh solenoid valve K7 to discharge the water in the bubble tube and the water bath through the first drainage pipe and the second drainage pipe respectively.

[0066] (6) Finally, the self-cleaning system is started. The computer controls the hydraulic device 2 through the self-cleaning module M1. The hydraulic device 2 controls the telescopic rod 5 to move in a telescopic manner, thereby driving the cleaning brush 6 to clean the inner wall of the bubble tube 17.

[0067] The invention realizes the integrated and automatic operation before foaming, during foaming and after foaming.

[0068] The parts not mentioned in the above methods can be realized by adopting or drawing on existing technologies.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated foam performance testing device, characterized in that: It includes a tank body, a bubbling tube is arranged in the center of the inner cavity of the tank body, the tank body is respectively connected to a liquid inlet system, a temperature control system, a bubbling system and a liquid discharge system, and an infrared signal system is also arranged on the tank body; The liquid inlet system includes a water tank, a surfactant storage tank and a foam stabilizer storage tank, the water tank is connected to the upper part of the bubble tube through a first water delivery pipeline, the surfactant storage tank is connected to the upper part of the bubble tube through a surfactant delivery pipeline, and the foam stabilizer storage tank is connected to the upper part of the bubble tube through a foam stabilizer delivery pipeline; The temperature control system comprises a water bath, which is arranged outside the lower part of the bubble tube, the water tank is connected to the water bath through a second water delivery pipeline, and a resistance wire and a temperature sensor are arranged inside the water bath; The bubbler system comprises a gas cylinder, which is connected to a bubbler pipe through a gas delivery pipeline, an inverted cone barrel is arranged at the bottom of the bubbler pipe, the top of the inverted cone barrel is connected to the bubbler pipe, and a gas-liquid separation membrane is arranged at the connection between the inverted cone barrel and the bubbler pipe, and the bottom of the inverted cone barrel is connected to the outlet end of the gas delivery pipeline; A stirrer is also provided inside the bubble tube; The drainage system comprises a first drainage pipe and a second drainage pipe, the first drainage pipe is connected to the drainage port at the bottom of the bubble tube, and the second drainage pipe is connected to the drainage port at the bottom of the water bath; The infrared signal system comprises an infrared signal transmitter and an infrared signal receiver, and the infrared signal transmitter and the infrared signal receiver are symmetrically installed on both sides of the tube wall of the bubble tube; The detection device also includes a cleaning system, which includes a hydraulic device, the hydraulic device is connected to a cleaning brush through a telescopic rod, the telescopic rod is arranged along the axial direction of the bubble tube, the cleaning brush is arranged along the circumference of the bubble tube, and the cleaning brush is in contact with the inner wall of the bubble tube; A first liquid inlet pump, a first electromagnetic valve and a first flowmeter are arranged on the first water delivery pipeline; a second electromagnetic valve and a second flowmeter are arranged on the surfactant delivery pipeline; a third electromagnetic valve and a third flowmeter are arranged on the foam stabilizer delivery pipeline; the first liquid inlet pump, the first electromagnetic valve, the first flowmeter, the second electromagnetic valve, the second flowmeter, the third electromagnetic valve and the third flowmeter are all connected to the automatic feeding module; A second liquid inlet pump, a fourth solenoid valve and a fourth flow meter are arranged on the second water delivery pipeline, and the second liquid inlet pump, the fourth solenoid valve and the fourth flow meter are also connected to the automatic feeding module; The resistance wire and the temperature sensor are connected to a temperature control module; A fifth solenoid valve and a fifth flow meter are arranged on the gas delivery pipeline, and the fifth solenoid valve and the fifth flow meter are connected to the automatic air intake module; A sixth solenoid valve and a sixth flowmeter are arranged on the first liquid discharge pipeline, a seventh solenoid valve and a seventh flowmeter are arranged on the second liquid discharge pipeline, and the sixth solenoid valve, the sixth flowmeter, the seventh solenoid valve and the seventh flowmeter are all connected to the automatic liquid discharge module; The infrared signal receiver is connected to the infrared signal processing module; The automatic feeding module, temperature control module, automatic air intake module, automatic liquid discharge module and infrared signal processing module are all connected to the computer; The bottom plate of the bubble tube is provided with regularly distributed circular holes of equal diameter, and the gas-liquid separation membrane is covered on the top of the bottom plate.

2. An automated foam performance testing device according to claim 1, characterized in that: The tank body and the bubble tube are both made of transparent materials.

3. An automated foam performance testing device according to claim 2, characterized in that: A scale is arranged on the tube wall of the bubble tube.

4. The automatic foam performance testing device according to claim 1, characterized in that: The stirrer is a magnetic stirrer, which is arranged at the bottom of the bubble tube.

5. The automatic foam performance testing device according to claim 1, characterized in that: The cleaning brush is provided with through holes for the ends of the first water delivery pipeline, the surfactant delivery pipeline and the foam stabilizer delivery pipeline to pass through.

6. The automatic foam performance testing device according to claim 1, characterized in that: The infrared signal transmitters and infrared signal receivers are provided in three groups in total and are arranged at intervals along the circumference of the outer wall of the bubbler tube.

7. The working method of the automatic foam performance detection device according to any one of claims 1 to 6, characterized in that The following steps are involved: (1) When the detection device is working, the computer first starts the liquid inlet system, the automatic feeding module opens the first solenoid valve, and by adjusting the first flow meter, the water in the water tank is injected into the bubble tube through the first water delivery pipe; at the same time, the fourth solenoid valve is opened, and an appropriate amount of water is injected into the water bath through the second water delivery pipe. The computer controls the temperature control module to heat the water through the resistance wire. After the water in the water bath is heated to the preset temperature, the temperature sensor is fed back to the computer through the temperature control module, and the water bath maintains a constant temperature state; (2) After reaching the predetermined temperature, the automatic feeding module opens the second solenoid valve and the third solenoid valve respectively, and respectively adds the surfactant into the bubble tube through the surfactant delivery pipeline and adds the foaming agent into the bubble tube through the foam stabilizer delivery pipeline; the computer controls the second flow meter and the third flow meter through the automatic feeding module to control the liquid inflow and flow rate of the surfactant and the foam stabilizer respectively, and the surfactant and the foam stabilizer enter the bubble tube and mix with the preheated water; (3) Start the bubbler system. The computer opens the fifth solenoid valve through the automatic air intake module. The gas cylinder supplies gas to the bubbler tube through the gas delivery pipeline, and the gas flow rate is controlled by the fifth flow meter. The gas enters the inverted cone barrel from the gas cylinder through the gas delivery pipeline and diffuses upward evenly. The gas passes through the circular hole on the bottom of the bubbler tube and the gas-liquid separation membrane and evenly penetrates into the bubbler tube; (4) Turn on the agitator, and the surfactant, foam stabilizer, water, and gas are foamed in the foaming tube. During the foaming process, the computer starts the infrared signal system, records the foaming height through the infrared signal transmitter and infrared signal receiver, and transmits it to the infrared signal processing module, which feeds back to the computer for data processing; (5) After the test is completed, the drainage system is started, and the computer controls the automatic drainage module to open the sixth solenoid valve and the seventh solenoid valve to discharge the water in the bubble tube and the water bath through the first drainage pipe and the second drainage pipe respectively; (6) Finally, the self-cleaning system is started. The computer controls the hydraulic device through the self-cleaning module. The hydraulic device controls the telescopic movement of the telescopic rod, thereby driving the cleaning brush to clean the inner wall of the bubble tube.

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