阅读说明：本技术 内防喷工具耐冲蚀压力实验装置 (Erosion pressure resistant experimental device for internal blowout prevention tool ) 是由 赵盛林 任红菊 刘喜龙 王吉山 于 2021-08-17 设计创作，主要内容包括：内防喷工具耐冲蚀压力实验装置,属于石油天然气钻井装置领域。能够进行各种设定工况下的冲蚀试验。所述模拟管流冲蚀试验系统回路对试验阀芯进行静态模拟仿真冲蚀试验,模拟压力射流冲蚀试验系统回路连入模拟管流冲蚀试验系统回路并对试验阀芯进行压力射流试验,所述电器总成控制柜为整套实验设备供电提供动能,自动化实验数据监控采样记录系统用于实时监控试验管线中的,流量、流速、温度、压力、阀盖一开启关闭次数,并存储实验数据,打印实验表格。本发明可实现内防喷工具在动态开关过程中的冲蚀试验。有两套冲蚀试验系统,试验参数容易控制,可调整模拟试验工况环境。(An erosion pressure resistant experimental device for an internal blowout prevention tool belongs to the field of petroleum and natural gas drilling devices. The erosion test under various set working conditions can be carried out. The simulation pipe flow erosion test system loop carries out static simulation erosion test on the test valve element, the simulation pressure jet erosion test system loop is connected into the simulation pipe flow erosion test system loop and carries out pressure jet test on the test valve element, the electric appliance assembly control cabinet provides kinetic energy for power supply of the whole set of test equipment, the automatic test data monitoring and sampling recording system is used for monitoring flow, flow rate, temperature, pressure and valve cover opening and closing times in a test pipeline in real time, storing test data and printing an experiment table. The invention can realize the erosion test of the internal blowout prevention tool in the dynamic switching process. Two sets of erosion test systems are provided, test parameters are easy to control, and the working condition environment of the simulation test can be adjusted.)

1. The utility model provides an interior blowout control instrument is able to bear or endure erosion pressure experimental apparatus which characterized in that: the device comprises a simulated pipe flow erosion test system loop (31), a simulated pressure jet erosion test system loop (32), an electric appliance assembly control cabinet (33) and an automatic experiment data monitoring sampling recording system (34); the simulation pipe flow erosion test system loop (31) carries out static simulation erosion test on the test valve core (5), the simulation pressure jet erosion test system loop (32) is connected to the simulation pipe flow erosion test system loop (31) and carries out pressure jet test on the test valve core (5), the electric appliance assembly control cabinet (33) provides kinetic energy for power supply of the whole set of test equipment, and the automatic test data monitoring and sampling recording system (34) is used for monitoring the flow, the flow rate, the temperature, the pressure and the opening and closing times of the valve cover I (50) in the test pipeline in real time, storing the test data and printing the test table.

2. The erosion pressure resistant experimental device for the internal blowout preventer according to claim 1, characterized in that: the simulation pipe flow erosion test system loop (31) comprises a first slurry pump (13), a test pipeline (7), a slurry box body (2), an exhaust device (3), a visual test chamber (4) and a test valve core (5); the visual experiment cabin (4) is installed on the experiment pipeline (7), a slurry outlet of the experiment pipeline (7) is communicated with an inner cavity of the slurry box body (2), a slurry inlet (12) of the experiment pipeline (7) is communicated with an outlet of a first slurry pump (13), an inlet of the first slurry pump (13) is communicated with a slurry outlet of the slurry box body (2), the experiment valve core (5) is installed in the visual experiment cabin (4) and communicated with the experiment pipeline (7), and an exhaust device (3) is arranged on the experiment pipeline (7).

3. The internal blowout preventer tool erosion pressure resistance experiment device according to claim 2, wherein: the simulation pipe flow erosion test system loop (31) further comprises a mud flow control device (11) and a drainage pipe (15); a discharge pipe (15) is communicated between the test pipeline (7) and the slurry box body (2), and a slurry flow control device (11) is arranged on the discharge pipe (15) and used for controlling the flow in the test pipeline (7).

4. The internal blowout preventer tool erosion pressure resistance test device according to claim 3, wherein: the mud flow control device (11) comprises a pipeline butterfly valve (27), a crank rocker mechanism (37) and a speed regulating motor (38); the pipeline butterfly valve (27) is installed in the bleeder line (15) as the butterfly valve switch rotation, buncher (38) drive the crank rotation of crank rocker mechanism (37), the rocker of crank rocker mechanism (37) drives pipeline butterfly valve (27) and rotates, realizes opening and closing of bleeder line (15).

5. The internal blowout preventer tool erosion pressure resistance experiment device according to claim 4, wherein: the test valve core (5) comprises a pipe body, a core body (43), a first sealing ring (42), a first valve cover (50), a second valve cover (41), a second sealing ring (44) and a fixing pin (40), wherein the core body, the first sealing ring (42), the second valve cover (50), the second valve cover (41), the second sealing ring (44) and the fixing pin are arranged in the pipe body; core (43) and sealing washer (42) set up relatively at the body both ends, and core (43) one end and sealing washer (42) dock test pipeline (7) respectively, valve gap (50) and valve gap two (41) rotate respectively and install on core (43) and sealing washer (42) the other end, and valve gap one (50) is covered under the action of gravity on core (43) the other end, and valve gap two (41) are fixed in the body through fixing pin (40) level, set up sealing washer two (44) in sealing washer one (42) other end inner chamber.

6. The internal blowout preventer tool erosion pressure resistance experiment device according to claim 5, wherein: the simulated pipe flow erosion test system loop (31) further comprises a slurry stirrer (10) and a slurry pump II (8); the mud stirrer (10) is arranged in the mud box body (2), the inlet of the mud pump II (8) is communicated with the mud outlet II (9) of the mud box body (2), the outlet of the mud pump II (8) is converged with the outlet of the mud pump I (13) and connected into the test pipeline (7), and the mud stirrer is arranged in front of the mud flow control device (11).

7. The erosion pressure resistant experimental device for the internal blowout preventer according to claim 1, characterized in that: the simulated pressure jet erosion test system loop (32) comprises an energy storage cylinder (21), a water injection cylinder (20), a pressurizing cylinder (19), a jet pipeline (14), a liquid storage pump station (22), a hydraulic station (17), an energy accumulator (26) and a hydraulic pump (18); energy storage cylinder (21), water injection jar (20) and beat and press jar (19) to communicate in proper order, energy storage cylinder (21) through injection pipeline (14) and test pipeline (7) intercommunication to the intercommunication position sets up between the export of visual experiment cabin (4) and slush pump (13), stock pump station (22) and water injection jar (20) intercommunication provide mud (36) for water injection jar (20), hydraulic pressure station (17) and beat and press jar (19) through the circulating pipe intercommunication, for beating to press jar (19) to provide and beat power, accumulator (26) and energy storage cylinder (21) intercommunication, install hydraulic pump (18) on hydraulic pressure station (17), set up booster pump (45) on stock pump station (22).

8. The erosion pressure resistant experimental device for the internal blowout preventer according to claim 7, characterized in that: the simulated pressure jet erosion test system loop (32) also comprises a pressure gauge (47) and a one-way exhaust valve (46); the energy storage cylinder (21) is provided with a pressure gauge (47), and the water injection cylinder (20) is provided with a one-way exhaust valve (46).

9. The erosion pressure resistant experimental device for the internal blowout preventer according to claim 1, characterized in that: the electric appliance assembly control cabinet (33) comprises

A main operating electrical appliance control cabinet (28) for controlling the simulated pressure jet erosion test system loop (32) and for controlling the simulated pipe flow erosion test system loop (31);

the mud pump control cabinet I (29) is used for controlling the mud pump I (13) and the mud pump II (8);

and the second storage cylinder slurry pump control cabinet (30) is used for controlling the storage cylinder slurry pump.

10. The erosion pressure resistant experimental device for the internal blowout preventer according to claim 1, characterized in that: the automatic experiment data monitoring sampling recording system (34) comprises

The PLC industrial personal computer sampling and recording device (23) is used for storing experimental data;

a monitor display (24) for displaying monitor data;

a printer (25) for printing the experimental table;

a pressure sensor (48) mounted on the accumulator (21) for monitoring the pressure of the simulated pressure jet erosion test system loop (32),

the photoelectric counter is used for recording the opening and closing times of the valve cover I (50);

an infrared counter (16) mounted on the crank of the crank-rocker mechanism (37) for recording when the pipe butterfly valve (27) is opened or closed,

the electromagnetic flowmeter (6) is arranged on the test pipeline (7) and used for monitoring the flow of the simulated pipe flow erosion test system loop (31).

Technical Field

The invention belongs to the field of petroleum and natural gas drilling devices, and particularly relates to an erosion experimental device.

Background

The internal blowout prevention tool belongs to a rapid blowout prevention tool in well control equipment, and can effectively control the occurrence of blowout and kick accidents in the drilling process. Is important safety equipment in the field of petroleum and natural gas drilling. Erosion and abrasion of solid matters such as drilling mud and rock debris mixed in the drilling process to the internal blowout prevention tool are one of the main failure modes. A simulated erosion test model established on the basis of an erosion theory is an important means for researching erosion failure of the model. Design optimization and process improvement are carried out on the product through the obtained experimental data, and the service life of the product in the erosive wear environment under various working conditions is verified. The existing erosion test device can only carry out static simulation erosion test on the target material through flow velocity, injection angle and sand content, and can not meet the erosion test conditions of the internal blowout prevention tool in different test working condition environments and the dynamic working process of the internal blowout prevention tool.

Disclosure of Invention

In order to solve the problems, the invention further provides an erosion pressure resistant experimental device for the internal blowout prevention tool, which is used for carrying out erosion tests under various set working conditions.

The technical scheme adopted by the invention is as follows: an erosion pressure resistant experimental device for an internal blowout prevention tool comprises a simulated pipe flow erosion test system loop, a simulated pressure jet erosion test system loop, an electric appliance assembly control cabinet and an automatic experiment data monitoring sampling recording system; the simulation pipe flow erosion test system loop carries out static simulation erosion test on the test valve element, the simulation pressure jet erosion test system loop is connected into the simulation pipe flow erosion test system loop and carries out pressure jet test on the test valve element, the electric appliance assembly control cabinet provides kinetic energy for power supply of the whole set of test equipment, the automatic test data monitoring and sampling recording system is used for monitoring flow, flow rate, temperature, pressure and valve cover opening and closing times in a test pipeline in real time, storing test data and printing an experiment table.

Compared with the prior art, the invention has the following beneficial effects:

the invention can realize the erosion test of the internal blowout prevention tool in the dynamic switching process. Two sets of erosion test systems are provided, test parameters are easy to control, and the working condition environment of the simulation test can be adjusted. The degree of automation is high, realizes real time monitoring record experiment data, and the experimental performance is stable. And monitoring the flow, the flow speed, the pressure, the temperature, the switching times of the internal blowout prevention tool and other test data in the test pipeline in real time, and printing a test data table. The unmanned test can be realized, and the experimental data can be automatically recorded.

Drawings

FIG. 1 is an isometric view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a circuit diagram of a simulated pipe flow erosion test system according to the present invention;

FIG. 4 is a schematic view of the construction of the mud flow control device of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4 in accordance with the present invention;

FIG. 6 is an enlarged view of portion B of FIG. 4 in accordance with the present invention;

FIG. 7 is a circuit diagram of a simulated pressure jet erosion test system of the present invention;

wherein: 1. a cover plate of the box body; 2. a slurry tank body; 3. an exhaust device; 4. a visual experiment chamber; 5. testing the valve core; 6. an electromagnetic flow meter; 7. a test line; 8. slurry pump two; 9. a second pulp outlet; 10. a slurry agitator; 11. a mud flow control device; 12. a pulp inlet; 13. a first slurry pump; 14. an injection line; 15. a bleeder tube; 16. an infrared counter; 17. a hydraulic station; 18. a hydraulic pump; 19. pressing a cylinder; 20. a water injection cylinder; 21. an energy storage cylinder; 22. a liquid storage pump station; 23. a PLC industrial personal computer sampling and recording device; 24. monitoring the display; 25. a printer; 26. an energy storage device; 27. a pipeline butterfly valve; 28. a main operation electrical control cabinet; 29. a first slurry pump control cabinet; 30. a second slurry pump control cabinet of the energy storage cylinder; 31. simulating a pipe flow erosion test system loop; 32. simulating a pressure jet erosion test system loop; 33. an electrical assembly control cabinet; 34. an automatic experimental data monitoring sampling recording system; 36. slurry; 37. a crank and rocker mechanism; 38. a speed-regulating motor; 40. fixing the pin; 41. a valve cover II; 42. a first sealing ring; 43. a core body; 44. a second sealing ring; 45. a booster pump; 46. a one-way exhaust valve; 47. a pressure gauge; 48. a pressure sensor; 50. and a first valve cover.

Detailed Description

The first embodiment is as follows: the invention designs an original composite erosion experimental device which consists of a simulated pipe flow erosion experimental system and a pressure jet type experimental erosion system, the simulated pipe flow erosion experimental system and the pressure jet type experimental erosion experimental system are integrated into a set of system, the simulation effect of the environment under the working condition of the simulated erosion abrasion test is real, and the erosion test under various set working conditions can be carried out by setting the flow rate, the flow speed, the pressure, the temperature and the switching frequency of an internal blowout prevention tool in a pipeline and changing the experimental environment.

The embodiment is described with reference to fig. 1 to 7, and provides an erosion pressure resistant experiment device for an internal blowout prevention tool, which includes a simulated pipe flow erosion test system loop 31, a simulated pressure jet erosion test system loop 32, an electrical assembly control cabinet 33, and an automated experiment data monitoring sampling recording system 34; the simulation pipe flow erosion test system loop 31 carries out static simulation erosion tests on the test valve element 5, the simulation pressure jet erosion test system loop 32 is connected into the simulation pipe flow erosion test system loop 31 and carries out pressure jet tests on the test valve element 5, the electric appliance assembly control cabinet 33 provides kinetic energy for power supply of the whole set of test equipment, the automatic test data monitoring and sampling recording system 34 is used for monitoring the opening and closing times of the first valve cover 50 in the test pipeline in real time, storing test data and printing a test table.

The second embodiment is as follows: the present embodiment will be described with reference to fig. 1 to 3, and the present embodiment further defines the simulated pipe flow erosion test system circuit 31 according to the first embodiment, and in the present embodiment, the simulated pipe flow erosion test system circuit 31 includes a first slurry pump 13, a test line 7, a slurry tank 2, an exhaust device 3, a visual test chamber 4, and a test valve cartridge 5; the visual experiment chamber 4 is arranged on the experiment pipeline 7, a slurry outlet of the experiment pipeline 7 is communicated with an inner cavity of the slurry box body 2, a slurry inlet 12 of the experiment pipeline 7 is communicated with an outlet of a first slurry pump 13, an inlet of the first slurry pump 13 is communicated with a slurry outlet of the slurry box body 2, the experiment valve core 5 is arranged in the visual experiment chamber 4 and is communicated with the experiment pipeline 7, and the experiment pipeline 7 is provided with an exhaust device 3. Other components and connection modes are the same as those of the first embodiment.

In the present embodiment, the slurry tank 2 is provided with a tank cover plate 1.

The third concrete implementation mode: the mud flow control device 11 in the device realizes the opening and closing of the inner blowout prevention tool in an erosion state, and realizes a dynamic erosion test of the inner blowout prevention tool in the working process.

The present embodiment will be described with reference to fig. 1 to 6, and the present embodiment further defines the simulated pipe flow erosion test system circuit 31 according to the second embodiment, and in the present embodiment, the simulated pipe flow erosion test system circuit 31 further includes the slurry flow rate control device 11 and the drain pipe 15; a discharge pipe 15 is communicated between the test pipeline 7 and the slurry box body 2, and a slurry flow control device 11 is arranged on the discharge pipe 15 and used for controlling the flow in the test pipeline 7. The other components and the connection mode are the same as those of the second embodiment.

In this embodiment, the drain pipe 15 is disposed on the pipeline between the visual experiment chamber 4 and the first mud pump 13.

In the fourth embodiment, the present embodiment will be described with reference to fig. 4, and the present embodiment further defines the slurry flow rate control device 11 according to the third embodiment, and in the present embodiment, the slurry flow rate control device 11 includes a pipe butterfly valve 27, a crank-rocker mechanism 37, and a speed-adjusting motor 38; the pipeline butterfly valve 27 is installed in the flow discharge pipe 15 as a butterfly valve switch in a rotating mode, the speed regulating motor 38 drives the crank of the crank rocker mechanism 37 to rotate through the transmission mechanism, and the rocker of the crank rocker mechanism 37 drives the pipeline butterfly valve 27 to rotate, so that the flow discharge pipe 15 is opened and closed.

In this embodiment, the transmission mechanism may be a belt transmission mechanism or a chain transmission mechanism.

In this embodiment, the pipeline butterfly valve 27 is installed in the drain pipe 15 through a rotating shaft, and one end of the rotating shaft extends out of the drain pipe 15, is hinged to a rocker, and is driven by the rocker to rotate the rotating shaft and the pipeline butterfly valve 27 together, so as to open and close the drain pipe 15.

The working principle of the mud flow control device 11 is as follows: after the first slurry pump 13 is started, slurry 36 is injected into the test pipeline 7, the speed regulating motor 38 is started, the speed regulating motor 38 drives the crank rocker mechanism 37 to operate, the pipeline butterfly valve 27 is opened and closed, when the pipeline butterfly valve 27 rotates for 90 degrees to be opened, the slurry 36 is discharged from the discharge pipe 15, the pressure in the pipeline is reduced, the valve cover one 50 of the serial core 43 is closed, and otherwise, the core 43 is opened.

The fifth concrete implementation mode: the present embodiment is described with reference to fig. 4 to 6, and the present embodiment further defines the test valve element 5 according to the fourth embodiment, and in the present embodiment, the test valve element 5 includes a tube body, and a core body 43, a first seal ring 42, a first valve cover 50, a second valve cover 41, a second seal ring 44, and a fixing pin 40 which are disposed in the tube body; the core body 43 and the first sealing ring 42 are oppositely arranged at two ends of the pipe body, one end of the core body 43 and the first sealing ring 42 are respectively butted with the test pipeline 7, the first valve cover 50 and the second valve cover 41 are respectively rotatably arranged at the other ends of the core body 43 and the first sealing ring 42, the first valve cover 50 covers the other end of the core body 43 under the action of gravity, the second valve cover 41 is horizontally fixed in the pipe body through a fixing pin 40, and the second sealing ring 44 is arranged in an inner cavity at the other end of the first sealing ring 42. The other components and the connection mode are the same as those of the fourth embodiment.

Simulated pipe flow erosion test system loop 31 use: the flow, the flow rate and the erosion of the test valve core 5 required by the experiment are provided for the slurry 36, so that the test valve core 5 can be opened and closed, the mechanical action of opening and closing the test valve core 5 in the erosion state of the slurry 36 is realized, and the abrasion conditions of the parts such as the first sealing ring 42, the second sealing ring 44, the first valve cover 50, the second valve cover 41, the pin shaft, the spring and the like are realized. Pipe flow erosion tests can be performed.

The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1 to 6, and the present embodiment further defines the simulated pipe flow erosion test system circuit 31 according to the fifth embodiment, and in the present embodiment, the simulated pipe flow erosion test system circuit 31 further includes a slurry stirrer 10 and a slurry pump two 8; the electromagnetic flow meter 6 is installed on the test pipeline 7, the slurry stirrer 10 is installed in the slurry box body 2, the infrared counter 16 is arranged on a crank of the crank rocker mechanism 37, an inlet of the second slurry pump 8 is communicated with a second slurry outlet 9 of the slurry box body 2, an outlet of the second slurry pump 8 is converged with an outlet of the first slurry pump 13 and connected into the test pipeline 7, and the test pipeline is arranged in front of the slurry flow control device 11. The other components and the connection mode are the same as the fifth embodiment mode.

The seventh embodiment: the present embodiment is described with reference to fig. 1, fig. 2, and fig. 7, and is further limited to the simulated pressure jet erosion test system circuit 32 according to the first embodiment, in which the simulated pressure jet erosion test system circuit 32 includes an energy storage cylinder 21, a water injection cylinder 20, a pressurizing cylinder 19, an injection line 14, a reservoir pump station 22, a hydraulic station 17, an energy storage device 26, and a hydraulic pump 18; the energy storage cylinder 21, the water injection cylinder 20 and the pressurizing cylinder 19 are sequentially communicated, the energy storage cylinder 21 is communicated with the test pipeline 7 through the injection pipeline 14, the communication position is arranged between the visual test cabin 4 and an outlet of the first slurry pump 13, the liquid storage pump station 22 is communicated with the water injection cylinder 20 to provide slurry 36 for the water injection cylinder 20, the hydraulic station 17 is communicated with the pressurizing cylinder 19 through a circulating pipe, the energy accumulator 26 is communicated with the energy storage cylinder 21, and the hydraulic pump 18 is installed on the hydraulic station 17. Other components and connection modes are the same as those of the first embodiment.

The accumulator 26 functions as: ensuring the pressure in the pipeline, stabilizing the pressure and maintaining the pressure;

excess fluid may be in accumulator 26 and when system pressure decreases, accumulator 26 operates to supplement line pressure.

Simulation pressure jet erosion test system loop 32 uses: providing pressure potential energy to the accumulator 21 and a pressure source for the system. The increasing pressure is adjustable from 0 to 20 mpa. Pressure jet tests can be performed.

The specific implementation mode is eight: referring to fig. 1, 2 and 7, the present embodiment is described, and is further limited to the simulated pressure jet erosion test system loop 32 according to the seventh embodiment, in which the simulated pressure jet erosion test system loop 32 further includes a pressure gauge 47 and a one-way exhaust valve 46; the energy storage cylinder 21 is provided with a pressure sensor 48 and a pressure gauge 47, and the water injection cylinder 20 is provided with a one-way exhaust valve 46. The other components and the connection mode are the same as those of the seventh embodiment.

The specific implementation method nine: the present embodiment will be described with reference to fig. 1, and the present embodiment is to further limit the electric equipment assembly control cabinet 33 described in the first embodiment, and in the present embodiment, the electric equipment assembly control cabinet 33 includes

A main operating electrical control cabinet 28 for controlling a simulated pressure jet erosion test system loop 32;

the first slurry pump control cabinet 29 is used for controlling the first slurry pump 13 and the second slurry pump 8;

and the second control cabinet 30 of the energy storage cylinder mud pump is used for controlling the energy storage cylinder mud pump. Other components and connection modes are the same as those of the first embodiment.

The detailed implementation mode is ten: the automatic test real-time monitoring and recording equipment monitors and records test data such as pressure, flow velocity, internal blowout prevention tool switching times and the like in a test pipeline in real time through various sensors installed in the pipeline, automatically monitors the test data, and prints out a simulation test condition process curve graph.

Referring to fig. 1, this embodiment is described, and the embodiment further defines the automated experimental data monitoring, sampling and recording system 34 according to the first embodiment, and in this embodiment, the automated experimental data monitoring, sampling and recording system 34 includes

The PLC industrial personal computer sampling and recording device 23 is used for storing experimental data;

a monitor display 24 for displaying monitor data;

a printer 25 for printing the experimental table;

a pressure sensor 48, mounted on the accumulator 21, for monitoring the pressure of the simulated pressure jet erosion test system loop 32,

an infrared counter 16, which is arranged on a crank of the crank rocker mechanism 37 and is used for recording the opening and closing times of the valve cover 50,

an electromagnetic flow meter 6 is mounted on the test pipeline 7 and used for monitoring the simulated pipe flow erosion test system.

The working principle is as follows: according to the Bernoulli equation principle, two sets of erosion test systems are designed for the inner blowout prevention tool erosion pressure resistant experiment device, and one set of the erosion test system provides a main loop of test flow rate for the inner blowout prevention tool erosion pressure resistant experiment device. The other set is a circuit providing pressure injection. The system can perform slurry pipe flow erosion test under the set flow rate condition and can also perform pressure erosion test under the pressure jet condition. An inner blowout prevention tool erosion device is designed according to the Bernoulli equation principle, and the physical significance of the Bernoulli equation is explained as follows: the ideal liquid for stable flow in a sealed pipe has 3 forms of energy, namely pressure energy, kinetic energy and potential energy, which can be mutually converted, and the sum of the three types of energy is certain when the liquid is in one position in the pipe, which is Bernoulli's law and also can be called as the law of energy conservation when the ideal liquid is in stable flow. It can also be seen from bernoulli's equation that when the pipe is placed horizontally, the position head at each cross-sectional area in the pipe can be considered equal, or the influence of the position height is basically not timed, the higher the flow speed of the liquid, the lower its pressure, for example, in pipes with different thickness, the flow speed of the liquid is higher in the thin cross-sectional area, the pressure of the liquid is lower, and conversely, the flow speed of the thick cross-sectional area is lower, and the pressure is higher. Therefore, the experimental device is provided with two sets of systems, and the main pipeline is mainly used for the flow rate erosion test. The attached line is mainly used for pressure jet test.

The using method comprises the following steps: 1. the test slurry 36 is proportioned, the proportioned slurry 36 is injected into the slurry box body 2,

2. the test cartridge 5 is inserted into the visual test chamber 4 and connected to the test line 7, taking care to screw the flange bolts and press them into the sealing ring, and to test the erosion test direction of the cartridge 5.

3. And injecting the proportioned slurry 36 into the slurry box body 2, controlling the amount of the slurry 36 by using a liquid level meter, alarming by using the liquid level meter when the slurry 36 is less, covering the cover plate 1 of the box body, and finishing the filling of the slurry 36.

4. The slurry stirrer 10 is started to stir the slurry 36 uniformly, and the slurry stirrer 10 is started first even if the barite powder is well proportioned because the barite powder is insoluble in water.

5. And starting a sampling and recording device 23 of the PLC industrial personal computer, and carrying out sampling detection and recording on experimental data of the erosion-resistant pressure experimental device of the internal blowout prevention tool.

6. After the substituted mud 36 is fully stirred, according to the set test working condition environment, the mud flow control device 11 is started firstly, then the mud pump control cabinet I29 and the energy storage cylinder mud pump control cabinet II 30 are connected with the mud pump button in a loop, the system circulates, and the system enters a pipe flow type erosion test state, so that the mud erodes the test valve core 5 according to a certain flow and flow speed.

7. According to the set test environment, a pressurizing loop (pump) button of the main operation electric appliance control cabinet 28 is started, the pressurizing pump 45 is started to pressurize the water injection cylinder 20 to provide kinetic energy, the pressurizing cylinder 19 is started, the slurry 36 enters the energy storage cylinder 21 through the one-way valve, and meanwhile, the one-way exhaust valve 46 works to exhaust air in the water injection cylinder 20.

8. When the pressure reaches a set value, the energy storage cylinder 21 works, the pressure sensor 48 works, signals are transmitted into the electromagnetic valve, the electromagnetic valve is controlled, the jet flow check valve is opened, the pressurized slurry 36 erodes the test valve core 5, the pressurized slurry 36 is repeatedly ejected, and the test state of the pressurized jet flow erosion is entered.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.