CN114577650A - Multi-parameter adjustable gas-liquid-solid erosive wear experiment device combining jet flow and pipe flow and using method thereof - Google Patents
Multi-parameter adjustable gas-liquid-solid erosive wear experiment device combining jet flow and pipe flow and using method thereof Download PDFInfo
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Abstract
The invention discloses a multi-parameter adjustable jet flow and pipe flow combined gas-liquid-solid erosion abrasion experiment device and a using method thereof, belonging to the technical field of part surface erosion experiments.A high-speed camera is connected with a computer to realize the visualization of the dynamic state of a gas-liquid-solid impact target material and the measurement of the particle size and the erosion speed of particles in the three-dimensional direction during the jet flow experiment; simultaneously through the adjusting motor, the metering water pump, cable heating pipe and trial sample clamping device, steerable sand production volume, carry the water yield, erosion temperature and erosion angle, it combines together to realize efflux and duct flow with test tube section and pipe connection, cyclone can realize the recovery of sand volume and recycle, this can satisfy the real erosion operating mode requirement of gas-liquid-solid mixed fluid under the different conditions, two kinds of experimental modes of efflux erosion and duct flow erosion combine together, save material, improve experimental efficiency, not only can be used to the research of erosion and wear mechanism, also can carry out the evaluation of material erosion resistance, good application prospect has.
Description
Technical Field
The invention relates to a multi-parameter adjustable jet flow and pipe flow combined gas-liquid-solid erosive wear experiment device and a using method thereof, and belongs to the technical field of part surface erosive experiments.
Background
Erosion is a phenomenon in which fluid and fluid-borne phases (e.g., droplets, sand, debris, etc.) strike the surface of a material (target surface) at an angle and velocity that results in deformation of the target surface and loss of material. The erosion and abrasion phenomenon is widely existed in the industrial processes of petroleum, chemical industry, hydroelectric power and the like, and various types of equipment exposed in moving fluid are damaged by erosion and abrasion, so that the phenomenon becomes an important reason for equipment failure. Therefore, the mechanism of pipeline erosion wear failure is always the research focus of domestic and foreign scholars, and each scholars proposes own erosion experimental device, and in the erosion types of gas-solid, liquid-solid and gas-liquid-solid, the indoor experimental characterization difficulty of gas-liquid-solid three-phase erosion is greater than that of two-phase erosion, most of the existing erosion experimental devices rarely consider the influence of temperature on material erosion, the erosion angle is adjustable, the erosion experiment is visual, the existing erosion experimental devices can only realize jet erosion or pipe flow erosion independently, and the erosion experimental devices can not complete jet erosion and pipe flow erosion simultaneously.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a multi-parameter adjustable jet flow and pipe flow combined gas-liquid-solid erosive wear experimental device and a using method thereof, aiming at visualizing the gas-liquid-solid three-phase erosive process, adjusting the erosive angle and the erosive temperature of a sample and simultaneously researching the erosive wear condition of materials under two erosive working conditions of jet flow and pipe flow.
The technical scheme of the invention is as follows:
a multi-parameter adjustable gas-liquid-solid erosive wear experimental device combining jet flow and pipe flow comprises a gas source supply system, a sand supply system, a water mist supply system, a mixing cavity, a gathering and transportation pipeline and an erosive system,
the air source supply system comprises an air compressor and a buffer tank, the air compressor is used for compressing outdoor air, setting parameters of the air compressor are adjusted to obtain different pressure gases, and the buffer tank is connected with the air compressor and is used for buffering the gases flowing out of the air compressor under different pressure conditions, so that the pressure of supplied air is fluctuated stably, and the unevenness of the gas flow in a pipeline is reduced; the gas source is connected to the mixing cavity through a gathering and transporting pipeline;
the sand supply system comprises a sand storage tank, a transparent glass pipe, an upper sand conveying pipe and a lower sand conveying pipe, wherein the sand storage tank is connected with the transparent glass pipe through the upper sand conveying pipe; the sand storage tank stores a certain mass of sand, the screw is surrounded by a transparent glass tube, the transparent glass tube is filled with sand required by an experiment and is provided with a lower sand opening with a fixed size, the frequency of the motor is adjusted to realize the control of the rotating speed of the screw, and finally the control of the sand supply amount in unit time is realized;
the water mist supply system comprises a water storage tank, a metering water pump, an upper water delivery pipe and a lower water delivery pipe, the water storage tank is connected with the metering water pump through the upper water delivery pipe, the metering water pump is connected to the mixing cavity through the lower water delivery pipe, the requirements of different water supply amounts in experiments can be met by adjusting the metering water pump, a hydraulic control one-way valve is arranged on the lower water delivery pipe, the flowing of liquid in a pipe is controlled, so that the liquid can also flow into the atomizing nozzle in a one-way manner when the water supply amount is small, the requirement of the water supply amount required by the experiments is met, and the end part of the lower water delivery pipe in the mixing cavity is provided with the atomizing nozzle;
one end of the mixing cavity is sequentially connected with a first heat insulation pipeline, a heating pipeline, a second heat insulation pipeline, a straight pipe testing section, a short pipeline and a bent pipe testing section, wherein the number of the short pipelines is at least one; the first heat insulation pipeline and the second heat insulation pipeline are used for blocking reverse heat transfer; the heating pipeline, the straight pipe testing section and the bent pipe testing section are heated through the cable heating pipe; the elbow testing section is connected to an erosion system through a gathering and transporting pipeline, the erosion system comprises an anti-splash cabin, a nozzle is arranged at the tail end of the gathering and transporting pipeline in the anti-splash cabin, and a sample is arranged below the anti-splash cabin;
the straight pipe testing section and the bent pipe testing section are respectively provided with at least one speed probe, and the speed probes are connected to the data collecting device; and a high-speed camera is arranged outside the anti-splash cabin, and the high-speed camera and the data collection device are both connected to a computer for data summarization and analysis.
According to the experimental requirements, the testing pipe section can be divided into a straight pipe testing section and a bending testing section, the bending testing section can be divided into bending testing sections with different curvatures, and the installation of the bending testing sections with different curvatures can be realized by adjusting the number of the short pipelines according to the experimental requirements, so that the experimental research on the erosion wear of the bending testing sections with different curvatures is realized;
the wall surface of the test pipe section is provided with a speed probe, the speed probe and the test pipe section are inserted, and the speed of the mixed fluid in the pipeline impacting the wall surface can be detected, so that the erosion and abrasion of the mixed fluid on the wall surface can be researched, and the erosion and abrasion conditions of the mixed fluid on the test pipe sections with different bending curvatures and different flow rates can be conveniently researched; the number of speed probes can be determined according to the experimental precision requirement. The data acquisition device can display the impact speed of the mixed fluid in the gathering and transportation pipeline impacting the inner wall of the test pipe section in real time and can realize automatic storage.
The high-speed camera output is connected so that experimental data's storage and calculation, and the high-speed camera can be to the pursuit and the measurement of grit particle diameter, sand granule equidirectional upward velocity of movement when impacting the sample in certain region in space to acquire the speed data on granule impact material surface, the high-speed camera can be shot gas-liquid-solid mixed fluid by the nozzle blowout to the process of assaulting to the sample surface, realizes that the erosion is visual.
Preferably, the multi-parameter adjustable gas-liquid-solid erosion wear experiment device combining jet flow and pipe flow further comprises a waste collection system, the waste collection system comprises an inverted regular quadrangular frustum pyramid, a cyclone separator and a collection device, the bottom of the splash-proof cabin is a metal sand control net, the bottom of the splash-proof cabin is connected with the inverted regular quadrangular frustum pyramid, and the inverted regular quadrangular frustum pyramid is connected with the collection device through the cyclone separator; the top of the inverted right quadrangular frustum pyramid is welded with a pipeline matched with the size of an inlet of the cyclone separator, an inlet of the cyclone separator sprays mixed fluid after the surface of an erosion sample to buffer and separate through the pipeline, an outlet of the cyclone separator is connected with a collecting device, and the collecting device can collect and treat the mixture treated by the cyclone separator to prevent pollution.
Further preferably, the sample is fixed in splashproof cabin below through sample clamping device, sample clamping device includes base, bench vice, bevel protractor, the base is used for fixing the bench vice on the metal sand control net of splashproof cabin lower part, the bench vice is used for fixing, dismantles the erosion sample, the bevel protractor is used for the measurement of erosion sample inclination, and then realizes the regulation of erosion angle.
The splash-proof cabin is used for fixing the sample clamping device and preventing the mixed fluid flowing out of the nozzle from splashing.
Further preferably, the base is fixed on the metal sand control net through the flange plate, so that the relative position of the nozzle and the sample can be conveniently adjusted, the bench clamp comprises a movable clamp block and a fixed clamp block, an angle ruler is fixedly arranged on the fixed clamp block, and the clamping angle of the sample can be changed according to the angle ruler during the experiment, so that the erosion angle can be controlled.
Preferably, the air source supply system further comprises a filter and a dryer, the filter and the dryer are sequentially connected with the buffer tank, water vapor in air flowing out of the buffer tank is removed, and support is provided for accurate water supply of the metering water pump. The inflow section of the dryer is connected with the outflow section of the filter, and the filtered high-pressure gas is dried to evaporate water, so that the influence of the humidity contained in the high-pressure gas on the accurate water supply of the metering water pump is eliminated.
Preferably, the gathering and transportation pipeline where the gas source is located is provided with a pressure sensor and a flowmeter for detecting the pressure and the flow of the gas source in the gathering and transportation pipeline. A pressure sensor and a flowmeter are arranged in a pipeline of the outflow section of the dryer, so that the parameters of fluid pressure and fluid speed in the pipeline can be measured, and the experimental parameters can be conveniently adjusted.
Preferably, a vibrator and a silencer are arranged on the sand storage tank and used for smoothly sending sand to the transparent glass tube.
Preferably, the upper sand conveying pipe and the lower sand conveying pipe are both provided with mixing valves. Used for controlling the opening and closing of the sand conveying process of the upper sand conveying pipe and the lower sand conveying pipe.
Preferably, the atomizing nozzle is located right below the mixing cavity, and the atomizing nozzle sprays the liquid flowing in from the lower water pipe into the mixing cavity in a mist shape, so that the gas, the liquid and the solid are uniformly mixed, and the mixed fluid is conveniently conveyed.
Preferably, the lower water delivery pipe is connected with the mixing cavity through a flange plate, so that the lower water delivery pipe is convenient to disassemble, and the relation between the metering water pump and the experimental water supply amount is convenient to correct before the components are assembled; the lower sand pipe is connected with the gathering and conveying pipeline through a flange plate so as to correct the relation between the motor-screw and the experimental sand supply amount before the components are assembled.
Preferably, the first heat insulation pipeline and the second heat insulation pipeline are both provided with a pressure sensor and a temperature sensor, and the heating pipeline, the straight pipe testing section and the bent pipe testing section are all provided with a temperature sensor.
The cable heating pipe is wound on the heating pipeline and used for heating fluid in the pipeline, the heating temperature is adjustable, and the heat insulation pipeline is provided with a temperature sensor and a pressure sensor and can monitor the temperature and the pressure of the fluid in the pipeline in real time; the cable heating pipe twines on straight tube test section and bending test section for heat for the pipe wall material of test section, consider the influence of temperature to material erosion performance under the pipe flow condition, temperature sensor is installed to straight tube test section and bending test section to detect the heating temperature of cable heating pipe actual regulation and the temperature value in the gathering pipeline.
The heat insulation pipeline is made of special materials with heat insulation or weak heat transfer, the heat on the wall surface of the heating pipeline is prevented from reversely transferring to the mixing cavity due to the fact that the heat and the mixed fluid move oppositely, the temperature sensor is installed to detect the temperature of the heating pipeline reversely transferred along the gathering and transporting pipeline, and the temperature of the reverse transfer is prevented from being too high to influence other experimental parts.
Preferably, the first heat insulation pipeline, the heating pipeline, the second heat insulation pipeline, the straight pipe testing section, the short pipeline and the bent pipe testing section are connected into the gathering and transportation pipeline through flanges. The disassembly is convenient, and the research on the erosion conditions of the surfaces of different materials can be met.
Preferably, the nozzle is fixed in the collection and transportation pipeline through a flange plate, a hole is formed in the top of the splash-proof cabin, the collection and transportation pipeline is inserted into the splash-proof cabin through the hole, the collection and transportation pipeline is connected to the hole in the top of the splash-proof cabin through the flange plate, and an outlet of the nozzle is perpendicular to the central position of the erosion sample and used for spraying gas-liquid-solid mixed fluid to the erosion sample.
Preferably, the anti-splash cabin is a square body, and the four side surfaces are made of high-strength transparent glass, so that a high-speed camera can shoot conveniently, and dynamic visualization of the erosion process is realized.
Preferably, the straight pipe testing section, the short pipeline and the bent pipe testing section are all high-strength transparent glass pipelines so as to conveniently observe the fluid mixing state in the pipelines.
A working method of the gas-liquid-solid erosive wear experimental device combining multi-parameter adjustable jet flow and pipe flow comprises the following steps:
supplying gas into the gathering and transportation pipeline by using a gas source supply system, opening a sand supply system to enable sand grains to enter the gathering and transportation pipeline through a lower sand conveying pipe, mixing the sand grains with the gas and then entering a mixing cavity, opening a water mist supply system, enabling water to enter the mixing cavity through the lower sand conveying pipe, spraying the water through an atomizing nozzle to form a gas-liquid-solid mixed fluid, enabling the mixed fluid to pass through a first heat insulation pipeline, a heating pipeline, a second heat insulation pipeline, a straight pipe testing section, a short pipeline and a bent pipe testing section, then entering a splash-proof cabin, spraying an erosion sample through a nozzle, and calculating an erosion loss amount by weighing the weight of the sample before erosion and the weight of the sample after erosion so as to finish a jet erosion experiment;
pipe flow erosion is on the gathering and transportation pipeline of hybrid chamber rear end, be connected to the gathering and transportation pipeline respectively with straight tube test section and crooked test section through the flange, and install a plurality of speed probe on the wall of straight tube test section, a speed for feeding back mixed fluid striking pipe wall, data collection system is connected to speed probe's outer end, data collection system is connected to the computer, but the speed of the interior fluid striking wall of real-time supervision pipeline, accessible flange is dismantled straight tube test section and crooked test section after the experiment is accomplished, handle the erosion experiment result through weighing method, and compare with the wall striking speed that data collection system on the computer gathered, thereby accomplish pipe flow erosion experiment.
The invention has the beneficial effects that:
considering the influence of temperature on the erosion result of the material; the erosion angle of the sample can be adjusted at will, and the adjustment mode is simple and convenient; the erosion and wear conditions of the material under two erosion working conditions of jet flow and pipe flow can be simultaneously researched, and the efficiency is high; can satisfy the gas-solid, the demand of two kinds of experimental operating modes of gas-liquid-solid, and can realize the visual with the erosion process of material, the real-time observation erosion condition, and experimental data can realize automatic the preservation, the stable performance, the operating performance is strong, straight tube test section and crooked test section are through short pipeline + flange joint to on the gathering and transportation pipeline, convenient dismantlement, can realize carrying out the pipe flow erosion to the crooked test section of different curvatures through controlling the quantity to short pipeline, thereby accomplish the pipe flow erosion experiment, and a plurality of speed probe is installed to the wall of straight tube test section and crooked test section, the speed that can show mixed fluid striking wall in real time, be applicable to scientific research and production.
The device adopts the cable heating pipe to heat the mixed fluid in the pipe wall and the gathering and transportation pipeline, is connected to a computer through the temperature sensor in the pipe, can monitor the heating temperature value of the mixed fluid in the pipe wall and the gathering and transportation pipeline in real time, does not need equipment such as an infrared thermometer and the like, has lower cost, and is safe, reliable and easy to operate. The sample erosion angle adjusting mode of the device is simple and convenient, and the purpose of angle adjustment can be realized only by bench vice and angle ruler, so that the cost is reduced, and the experimental time is shortened; the device not only can realize efflux erosion experiment, can also accomplish the duct flow erosion experiment when accomplishing efflux erosion experiment, reaches the purpose that two kinds of experiment operating modes were accomplished simultaneously to a set of equipment, and efficiency is than higher, very big shortening the experimental time, and the commonality is strong, has good scientific research and production application prospect.
Drawings
FIG. 1 is a schematic view of a multi-parameter adjustable gas-liquid-solid erosive wear experimental apparatus combining jet flow and pipe flow;
FIG. 2 is a flow chart of a multi-parameter adjustable gas-liquid-solid continuous jet erosion wear experiment;
FIG. 3 is a schematic view of an atomizer employed in the present invention;
FIG. 4 is a schematic illustration of a straight tube test section and a bend test section of the present invention;
FIG. 5 is a schematic view of a sample holding device used in the present invention;
FIG. 6 is a schematic view of a nozzle of the present invention;
FIG. 7 is a schematic view of sample clamping and bevel mounting according to the present invention;
FIG. 8 is a schematic view of an angle ruler of the present invention;
in the figure: air compressor (1), buffer tank (2), filter (3), desicator (4), pressure sensor (5), flowmeter (6), motor (7), screw rod (8), clear glass pipe (9), sand storage tank (10), go up defeated sand pipe (11), vibrator (12), silencer (13), defeated sand pipe (14) down, spout (15), mixing valve (16-1), mixing valve (16-2), defeated pipeline of collection (17), metering pump (18), liquid accuse check valve (19), water storage tank (20), go up defeated pipe (21), lower water pipe (22), atomizer (23), mixing chamber (24), ring flange (25), first heat pipe (26), pressure sensor (27), temperature sensor (28), ring flange (29), heating tube (30), cable heating pipe (31), temperature sensor (32), Ring flange (33), second adiabatic pipeline (34), pressure sensor (35), temperature sensor (36), ring flange (37), straight tube test section (38), cable heating pipe (39), speed probe (40), temperature sensor (41), data collection device (42), ring flange (43), short pipeline (44), ring flange (45), short pipeline (46), ring flange (47), short pipeline (48), ring flange (49), short pipeline (50), ring flange (51), bending test section (52), cable heating pipe (53), speed probe (54), computer (55), temperature sensor (56), splashproof cabin (57), high-speed camera (58), nozzle (59), sample (60), hole (61), ring flange (62), ring flange (63), metal sand control net (64), bench vice (65), angle chi (66), The device comprises an inverted square frustum pyramid (67), a cyclone separator (68), a collecting pipeline (69), a collecting device (70), a flange plate (71) and a clamp block (72).
Detailed Description
In order to better explain the technical means adopted by the present invention to achieve the predetermined object, the following detailed description of the embodiments, structures, features and functions according to the present invention, taken in conjunction with the accompanying drawings and embodiments, is set forth below, but is not limited thereto.
Example 1:
as shown in fig. 1 and fig. 2, the invention provides a multi-parameter adjustable gas-liquid-solid erosive wear experimental device combining jet flow and pipe flow, which comprises the following components:
Before the experiment, the sand amount with certain mass is stored in the sand storage tank 10, the transparent glass tube 9 needs to be filled with sand required by the experiment, then the vibrator 12 and the silencer 13 are opened, the mixing valve 16-1 is adjusted to be in a fully-opened state, the transparent glass tube 9 and the upper sand conveying tube 11 are fully filled with the sand amount, the control of the rotating speed of the screw rod is realized by adjusting the frequency of the motor, and finally the control of the sand supply amount in unit time is realized.
The motor 7 is connected with the screw 8, the control of the rotating speed of the screw can be realized by adjusting the frequency of the motor 7, the transparent glass tube 9 is fixed outside the screw 8, the upper part of the transparent glass tube 9 is provided with a lower sand opening with fixed size, the sand storage tank 10 is connected with the opening of the transparent glass tube 9 through an upper sand conveying tube 11, a mixing valve 16-1 is arranged on the upper sand conveying tube and can control the opening and closing of the sand conveying process to the transparent glass tube 9, the sand storage tank 10 is provided with a vibrator 12 and a silencer 13, the vibrator 12 can keep the sand storage tank 10 vibrating when in a sand supply working state, the sand is prevented from being blocked in the sand conveying tube due to too much sand storage in the sand storage tank 10 and cannot provide sand for the system, the silencer 13 is used for eliminating the noise generated by the vibration of the vibrator 12 and keeping the quiet of the indoor experiment, the opening with the size matched with the lower sand conveying tube 14 is arranged on the transparent glass tube 9, when the sand supply device works, the motor 7 continuously drives the screw rod 8 to rotate, sand in the transparent glass tube 9 is continuously conveyed to the lower sand conveying pipe 14 through the sliding chute 15 on the screw rod 8, the mixing valve 16-2 is arranged between the lower sand conveying pipe 14 and the gathering and conveying pipeline 17, the lower sand conveying pipe 14 can be controlled to be opened and closed in the sand conveying process to the gathering and conveying pipeline 17 through controlling the mixing valve 16-2, the sand storage tank 10 can continuously convey sand amount to the transparent glass tube 9, and therefore the sand storage amount in the transparent glass tube 9 is guaranteed to be kept unchanged, and accurate sand supply in unit time is achieved.
Before water is supplied to the collecting and conveying pipeline 17, the regulation level and the unit water supply amount of the metering water pump 18 need to be checked, the water storage tank 20 is connected with the metering water pump 18 through the upper water conveying pipe 21, the metering water pump 18 is connected with the atomizing spray head 23 through the lower water conveying pipe 22, the lower water conveying pipe 22 is provided with the hydraulic control one-way valve 19, so that the water supply amount can also flow into the atomizing spray head 23 from the lower input pipe 22 in a one-way mode when the experimental water supply amount is small, the atomizing spray head 23 can spray the water into the mixing cavity 24 in a mist mode, so that the mist liquid phase and the gas-solid phase are fully mixed to form mixed fluid, the atomizing spray head is located right below the mixing cavity, the mixing cavity 24 is connected with the lower water conveying pipe 22 through the flange 25, and the disassembly is convenient, as shown in fig. 3.
The mixed fluid flows out of the mixing cavity 24 and then enters the first heat insulation pipeline 26, the first heat insulation pipeline 26 is used for connecting the heating pipeline 30 with the mixing cavity 24 and simultaneously preventing the temperature of the heating pipeline 30 from being reversely transferred to the mixing cavity 24 along the gathering pipeline 17, and the first heat insulation pipeline 26 is provided with the pressure sensor 27 and the temperature sensor 28, on one hand, the temperature and pressure experiment parameter information of the mixed fluid flowing out of the mixing cavity 24 can be detected through the pressure sensor 27 and the temperature sensor 28, on the other hand, the temperature and pressure experiment parameter information reversely transferred from the heating pipeline 30 to the mixing cavity 24 can be fed back, so that the high temperature of the gathering pipeline 17 is avoided, the temperature of the heating pipeline 30 is timely adjusted, the influence on the experiment result is avoided, and the first heat insulation pipeline 26 is connected with the heating pipeline 30 through the flange 29.
The cable heating pipe 31 is wound outside the heating pipeline 30, the cable heating pipe 31 is used for providing heat energy for the heating pipeline, and further heating the fluid in the gathering and transportation pipeline 17, the mixed fluid reaches the temperature required by the experiment by adjusting the heating temperature of the cable heating pipe 31, and the heating pipeline 30 is provided with the temperature sensor 32, so that the theoretical adjusting temperature of the cable heating pipe 31 and the temperature of the actual fluid in the gathering and transportation pipeline 17 can be corrected.
As shown in fig. 4, the heating pipe 30 is connected to a second heat-insulating pipe 34 through a flange 33, a pressure sensor 35 and a temperature sensor 36 are installed on the second heat-insulating pipe 34 for feeding back experimental parameter information of pressure and temperature of the mixed fluid in the gathering and transportation pipe 17, the second heat-insulating pipe 34 is connected to a straight pipe testing section 38 through a flange 37, a plurality of speed probes 40 and a temperature sensor 41 are installed on the wall surface of the straight pipe testing section 38, the number of the speed probes 40 can be installed according to the required precision of experimental data, the speed probes 40 can record the speed of the mixed fluid impacting the wall surface, the speed probes 40 are connected to a data collecting device 42, experimental parameters transmitted by the speed probes 40 can be displayed and stored in real time, a cable heating pipe 39 is wound outside the straight pipe testing section 38, the heating temperature of the straight pipe testing section 38 can be controlled by the cable heating pipe 39, heating the pipe wall of the straight pipe test section 38 to a preset temperature, and researching the influence of the temperature on the erosion and abrasion of the material; the mixed fluid in the pipeline is reheated, so that the temperature of the mixed fluid flowing out of the cable heating pipe 31 when the mixed fluid flows through the straight pipe testing section is prevented from reaching the temperature required by the experiment, and the theoretical heating temperature of the cable heating pipe 39 and the temperature of the mixed fluid in the straight pipe testing section 38 are fed back through the temperature sensor 41.
The straight pipe testing section 38 is connected with a short pipeline 44 through a flange 43, the short pipeline 44 is connected with a short pipeline 46 through a flange 45, the short pipeline 46 is connected with a short pipeline 48 through a flange 47, the short pipeline 48 is connected with a short pipeline 50 through a flange 49, the short pipeline 50 is connected with a bending testing section 52 through a flange 51, a speed probe 54 and a temperature sensor 56 are installed on the wall surface of the bending testing section 52, the speed probe 54 can record the speed of the mixed fluid impacting the wall surface, the speed probe 54 is connected with a data collecting device 42, the data collecting device is connected with a computer 55 and can display and store experimental parameters transmitted by the probe 54 in real time, a cable heating pipe 53 is wound outside the bending testing section 52, the heating temperature of the bending testing section 52 can be controlled through the cable heating pipe 53, and the theoretical heating temperature of the cable heating pipe 53 and the temperature of the mixed fluid in the bending testing section 52 are fed back through the temperature sensor 56, the temperature sensor is connected with the computer to feed back experimental data information in real time.
The short pipes 44, 46, 48, 50 can be disassembled according to the experiment requirement to connect the bending test sections with different curvatures, the number of the short pipes can be increased or decreased properly according to the different curvatures of the bending test sections, in the embodiment, the curvature of the selected bending test section is 90 degrees, as shown in fig. 1, if the number of short pipes is four, and the short pipes 44, 46, 48, 50 are removed, the straight pipe testing section 38 is directly connected to the bending testing section 52, so that it is difficult to avoid the mutual interference of the heating temperatures of the pipe walls of the straight pipe testing section 38 and the bending testing section 52, and the straight pipe test section 38 is connected with the bending test section 52 through the flange, so that the connection difficulty is high, and the connection is not easy, so that a short pipeline is adopted as a bridge of the straight pipe test section 38 and the bending test section 52, on one hand, the experimental data of the straight pipe test section 38 and the bending test section 52 can be more accurate, and on the other hand, the assembly and the disassembly are convenient.
The splash-proof cabin 57 is a square body, four side surfaces are made of high-strength transparent glass, the high-speed camera 58 works, the high-speed camera 58 can track and measure the grit particle size and the movement speed of sand particles in different directions when impacting a sample in a certain area in space, the high-speed camera 58 can shoot the process that mixed fluid is sprayed out from the nozzle 59 and then impacts the sample 60, the dynamic visualization of the erosion process is realized, the output end of the high-speed camera 58 records the video with the computer 55, and the connection is convenient for the storage and calculation of experimental data.
The top surface of the splash proof cabin 57 is provided with a hole 61 matched with the gathering and transportation pipeline 17, the gathering and transportation pipeline 17 is connected with the hole 61 through a flange 62 so as to be convenient to disassemble, the gathering and transportation pipeline 17 is connected with the nozzle 59 through a flange 63, and as shown in fig. 6, the requirements of nozzles with different inner diameters required by experiments can be met.
Example 2:
a multi-parameter adjustable gas-liquid-solid erosive wear experiment device combining jet flow and pipe flow is structurally as described in embodiment 1, except that as shown in FIGS. 5, 7 and 8, a base is fixed on a metal sand control net 64 through a flange 71 to facilitate adjustment of relative positions of a nozzle 59 and a sample 60, a bench clamp 65 comprises two clamp blocks 72 to fix and detach the sample, an angle ruler 66 is fixedly arranged on each fixed clamp block for moving the clamp blocks and fixing the clamp blocks, and a clamping angle of the sample can be changed according to the angle ruler during experiments so as to control erosive angles.
Example 3:
the utility model provides a solid erosion and wear experimental apparatus of gas-liquid that multi-parameter adjustable efflux, pipe flow combined together, the structure is as in embodiment 1, the difference is that the solid erosion and wear experimental apparatus of gas-liquid that multi-parameter adjustable efflux, pipe flow combined together still includes the garbage collection system, the garbage collection system includes inverted positive quadrangular frustum 67, cyclone 68, collection device 70, splashproof cabin bottom is the metal sand control net, splashproof cabin 57 bottom and inverted positive quadrangular frustum 67 welded connection, the welding of inverted positive quadrangular frustum 67 top has the collection pipeline 69 that matches with cyclone 68 entry size, cyclone 68 separates, cushions the mixed fluid that flows in, and cyclone 68's export is connected with collection device 70, and collection device 70 can collect the mixture that cyclone 68 handled, prevents the pollution.
Example 4:
a use method of the multi-parameter adjustable jet flow and pipe flow combined gas-liquid-solid erosion abrasion experiment device in the embodiment 3 can meet the requirements of real erosion working conditions of gas-liquid-solid mixed fluid under different conditions, the sand supply amount and the water supply amount are accurately adjustable, the erosion angle is simple and convenient to adjust, the erosion speed is accurately controllable, jet erosion is combined with pipe flow erosion, the gas-liquid-solid or gas-solid fluid is fully mixed in a mixing cavity of a gathering and transportation pipeline by adjusting a gas source supply system, an accurate sand supply system and a water mist supply system in the jet erosion process, the fluid is further conveyed to a nozzle by the gathering and transportation pipeline, an erosion sample is sprayed out from the nozzle, the erosion loss amount is calculated by weighing the weight of the sample before erosion and the weight of the sample after erosion, and therefore the jet erosion experiment is completed; the pipe flow erosion refers to that a straight pipe testing section and a bending testing section are connected to a gathering and transporting pipeline through flanges on the gathering and transporting pipeline at the rear end of a mixing cavity, a plurality of speed measuring probes are installed on the wall surface of the straight pipe testing section and used for feeding back the speed of the mixed fluid impacting the pipe wall, the outer ends of the speed measuring probes are connected with a data collecting system, the data collecting system is connected to a computer and can monitor the speed of the fluid impacting the wall surface in the pipeline in real time, the straight pipe testing section and the bending testing section can be detached through the flanges after the experiment is completed, the erosion experiment result is processed through a weighing method and is compared with the wall surface impacting speed collected by the data collecting system on the computer, so that the pipe flow erosion experiment is completed, the two experiment modes are combined, materials are saved, the experiment efficiency is improved, the temperature of the gas-liquid-solid mixed fluid and the sample can be considered under the pipe flow condition, and the erosion research factor is more comprehensive, the erosion of the straight pipe section and the bent pipe sections with different curvatures can be researched; man-machine interaction can realize automatic storage of data; the high-speed camera can realize dynamic visualization of the erosion process, better observe the motion state of the mixed fluid in the pipeline, can be used for researching the erosion wear mechanism, can also evaluate the erosion resistance of the material, and has good application prospect.
The composition, basic principle and specific implementation process of the multi-parameter adjustable jet flow and pipe flow combined gas-liquid-solid erosive wear experimental device of the invention are shown and described above, the scope of the invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the invention, and all the changes or substitutions are covered by the scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A multi-parameter adjustable jet flow and pipe flow combined gas-liquid-solid erosion abrasion experiment device is characterized by comprising a gas source supply system, a sand supply system, a water mist supply system, a mixing chamber, a gathering and transportation pipeline and an erosion system,
the air source supply system comprises an air compressor and a buffer tank, wherein the air compressor is used for compressing outdoor air, and the buffer tank is connected with the air compressor and is used for buffering air with different pressure conditions flowing out of the air compressor; the gas source is connected to the mixing cavity through a gathering and transporting pipeline;
the sand supply system comprises a sand storage tank, a transparent glass pipe, an upper sand conveying pipe and a lower sand conveying pipe, wherein the sand storage tank is connected with the transparent glass pipe through the upper sand conveying pipe;
the water mist supply system comprises a water storage tank, a metering water pump, an upper water delivery pipe and a lower water delivery pipe, wherein the water storage tank is connected with the metering water pump through the upper water delivery pipe, the metering water pump is connected to the mixing cavity through the lower water delivery pipe, a hydraulic control one-way valve is arranged on the lower water delivery pipe, and an atomizing spray head is arranged at the end part of the lower water delivery pipe in the mixing cavity;
one end of the mixing cavity is sequentially connected with a first heat insulation pipeline, a heating pipeline, a second heat insulation pipeline, a straight pipe testing section, a short pipeline and a bent pipe testing section, wherein the number of the short pipelines is at least one; the first heat insulation pipeline and the second heat insulation pipeline are used for blocking reverse heat transfer; the heating pipeline, the straight pipe testing section and the bent pipe testing section are heated through the cable heating pipe; the elbow testing section is connected to an erosion system through a gathering and transporting pipeline, the erosion system comprises an anti-splash cabin, a nozzle is arranged at the tail end of the gathering and transporting pipeline in the anti-splash cabin, and a sample is arranged below the anti-splash cabin;
the straight pipe testing section and the bent pipe testing section are respectively provided with at least one speed probe, and the speed probes are connected to the data collecting device; and a high-speed camera is arranged outside the anti-splash cabin, and the high-speed camera and the data collection device are both connected to a computer.
2. The experimental apparatus for gas-liquid-solid erosive wear combined by multi-parameter adjustable jet flow and pipe flow as claimed in claim 1, wherein the experimental apparatus for gas-liquid-solid erosive wear combined by multi-parameter adjustable jet flow and pipe flow further comprises a waste collection system, the waste collection system comprises an inverted regular quadrangular frustum, a cyclone separator and a collection device, the bottom of the splash-proof cabin is a metal sand-proof net, the bottom of the splash-proof cabin is connected with the inverted regular quadrangular frustum, and the inverted regular quadrangular frustum is connected with the collection device through the cyclone separator.
3. The multiparameter-adjustable gas-liquid-solid erosive wear test device combining jet flow and pipe flow as defined in claim 2, wherein the sample is fixed below the splash-proof cabin by a sample holding device, the sample holding device comprises a base, a bench clamp and an angle ruler, the base is used for fixing the bench clamp on a metal sand control net at the lower part of the splash-proof cabin, the bench clamp is used for fixing and detaching erosive samples, and the angle ruler is used for measuring the inclination angle of the erosive samples;
preferably, the base is fixed on the metal sand control net through a flange plate, the bench clamp comprises a movable clamp block and a fixed clamp block, and an angle ruler is fixedly arranged on the fixed clamp block.
4. The multi-parameter adjustable jet flow and pipe flow combined gas-liquid-solid erosive wear experimental device according to claim 1, wherein the gas source supply system further comprises a filter and a dryer, and the filter and the dryer are sequentially connected with the buffer tank; the gathering and transportation pipeline where the gas source is located is provided with a pressure sensor and a flowmeter which are used for detecting the pressure and the flow of the gas source in the gathering and transportation pipeline.
5. The multi-parameter adjustable jet flow and pipe flow combined gas-liquid-solid erosive wear experimental device according to claim 1, characterized in that a vibrator and a silencer are arranged on the sand storage tank; the upper sand conveying pipe and the lower sand conveying pipe are both provided with mixing valves.
6. The multiparameter adjustable gas-liquid-solid erosive wear test apparatus with combined jet flow and pipe flow as defined in claim 1, wherein the first and second heat-insulating pipes are respectively provided with a pressure sensor and a temperature sensor, and the heating pipe, the straight pipe testing section and the bent pipe testing section are respectively provided with a temperature sensor.
7. The multiparameter-adjustable gas-liquid-solid erosive wear test device combining jet flow and pipe flow as defined in claim 1, wherein the atomizing nozzle is positioned right below the mixing chamber; the lower water delivery pipe is connected with the mixing cavity through a flange plate; the lower sand conveying pipe is connected with the gathering and conveying pipeline through a flange plate; the first heat insulation pipeline, the heating pipeline, the second heat insulation pipeline, the straight pipe testing section, the short pipeline and the bent pipe testing section are connected into the gathering and transportation pipeline through flanges.
8. The multi-parameter adjustable gas-liquid-solid erosive wear experimental device combining jet flow and pipe flow as claimed in claim 1, wherein the nozzle is fixed in the collection and transportation pipeline through a flange, a hole is formed in the top of the splash-proof cabin, the collection and transportation pipeline is inserted into the splash-proof cabin through the hole, the collection and transportation pipeline is connected to the hole in the top of the splash-proof cabin through the flange, and an outlet of the nozzle is perpendicular to the center position of the erosive sample.
9. The multiparameter-adjustable gas-liquid-solid erosive wear experimental device combining jet flow and pipe flow as defined in claim 1, wherein the anti-splash chamber is a cube, and four side surfaces are made of high-strength transparent glass; the straight pipe testing section, the short pipeline and the bent pipe testing section are all high-strength transparent glass pipelines.
10. A method for using the multi-parameter adjustable jet flow and pipe flow combined gas-liquid-solid erosive wear experimental device as described in any one of claims 1-9, comprising the following steps:
supplying gas into the gathering and transportation pipeline by using a gas source supply system, opening a sand supply system to enable sand grains to enter the gathering and transportation pipeline through a lower sand conveying pipe, mixing the sand grains with the gas and then entering a mixing cavity, opening a water mist supply system, enabling water to enter the mixing cavity through the lower sand conveying pipe, spraying the water through an atomizing nozzle to form a gas-liquid-solid mixed fluid, enabling the mixed fluid to pass through a first heat insulation pipeline, a heating pipeline, a second heat insulation pipeline, a straight pipe testing section, a short pipeline and a bent pipe testing section, then entering a splash-proof cabin, spraying an erosion sample through a nozzle, and calculating an erosion loss amount by weighing the weight of the sample before erosion and the weight of the sample after erosion so as to finish a jet erosion experiment;
pipe flow erosion refers to on the gathering and transportation pipeline of hybrid chamber rear end, be connected to straight tube test section and bending test section respectively through the flange and defeated the pipeline of gathering, and install speed probe on the wall of straight tube test section, a speed for feeding back the mixed fluid striking pipe wall, data collection system is connected to speed probe's outer end, data collection system is connected to on the computer, the speed of the fluid striking wall in the real-time supervision pipeline, accessible flange is dismantled straight tube test section and bending test section after the experiment is accomplished, handle the erosion experiment result through weighing method, and compare with the wall striking speed that data collection system on the computer gathered, thereby accomplish pipe flow erosion experiment.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115561108A (en) * | 2022-12-05 | 2023-01-03 | 中国石油大学(华东) | Erosion experiment system and method considering high temperature and pipe column buckling |
| CN118225609A (en) * | 2024-05-27 | 2024-06-21 | 西南石油大学 | Bending and erosion composite simulation device and simulation method for ocean pipe column |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115561108A (en) * | 2022-12-05 | 2023-01-03 | 中国石油大学(华东) | Erosion experiment system and method considering high temperature and pipe column buckling |
| CN118225609A (en) * | 2024-05-27 | 2024-06-21 | 西南石油大学 | Bending and erosion composite simulation device and simulation method for ocean pipe column |
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