High-temperature and high-pressure fluid medium corrosion experiment device

Abstract

The invention discloses a high-temperature and high-pressure fluid medium corrosion experiment device which comprises an experiment tank, a cooling water tank, a cooling water tank and a measurement and control system, an experiment tank steam outlet is connected with a cooling water tank steam inlet, an experiment tank water outlet is connected with a cooling water tank water inlet, a stirring shaft is arranged in the experiment tank, an electric heating pipe is attached to the lower portion of the experiment tank, and a hanging disc is fixed to the middle section of the stirring shaft. The bottom end of the stirring shaft is connected with stirring blades; the hanging disc is composed of two symmetrical parts, the two parts are connected into a whole through fastening holes of fastening parts, the hanging disc is fixedly installed on the stirring shaft through tangential bolt fastening holes and screws, a plurality of evenly-distributed bearing columns are arranged on a supporting disc of each part, and upper hanging piece tooth blocks and lower hanging piece tooth blocks are symmetrically arranged on the upper faces and the lower faces of the bearing columns. Radial sample hanging holes and tangential sample hanging holes are symmetrically formed in the hanging piece tooth block and the lower hanging piece tooth block respectively. According to the invention, dynamic accelerated corrosion experiments under complex working conditions of high temperature, high pressure, multi-direction, multi-medium and multi-flow-velocity scouring can be realized at the same time, and the experimental research efficiency and reliability can be remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of corrosion experiments under the discipline of materials science and engineering, and in particular to a high-temperature and high-pressure fluid medium corrosion experiment device. Background Art

[0002] Metal corrosion not only wastes significant resources and energy but also impacts the stability, safety, and efficiency of metal equipment operations, making it a common problem worldwide. Due to the complexity and variability of corrosion issues and the difficulty in replicating corrosion conditions, the targeted design of advanced experimental equipment is crucial for improving the accuracy, effectiveness, and efficiency of metal corrosion research and achieving its expected economic and social benefits.

[0003] Currently, common corrosion test equipment mainly focuses on working conditions such as static and dynamic corrosion at room temperature, accelerated corrosion caused by rotation at room temperature, and static corrosion at high temperature and high pressure. The main disadvantage is that the working condition variables are single and the reference value is low. It is difficult to meet the conditions for simulating accelerated corrosion experiments of some metal equipment under complex working conditions such as high temperature and high pressure environments, multi-directional, multi-media, and multi-flow rate erosion. Therefore, there is an urgent need for a set of experimental equipment with working conditions as close as possible to actual engineering applications, so that the simulated corrosion test results are closer to the real situation, and provide scientific guidance for the design and manufacture of key metal equipment serving in complex working conditions, and the elimination and prevention of corrosion risks. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a high-temperature and high-pressure fluid medium corrosion experimental device that can simultaneously realize dynamic accelerated corrosion experiments under complex working conditions of high temperature, high pressure, multi-direction, multi-media, and multi-flow rate flushing, which can significantly improve the efficiency and reliability of experimental research.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] A high-temperature and high-pressure fluid medium corrosion experimental device of the present invention includes an experimental tank, a cooling water tank, a cooling water tank, and a measurement and control system. The steam exhaust port of the experimental tank is connected to the steam inlet of the cooling water tank, and the drain port of the experimental tank is connected to the water inlet of the cooling water tank, wherein: The experimental tank is equipped with a stirring shaft, an electric heating tube is mounted on the lower part, the stirring shaft is connected to a variable frequency motor, a hanging plate is fixed to the middle section of the stirring shaft, and the bottom end of the stirring shaft is connected to the stirring blade; the hanging plate is composed of two symmetrical parts, the circular fastening ears of the two hanging plates are connected into one through the fastening holes of the fastening parts, and the hanging plate is fixed to the stirring shaft with screws through the tangential bolt fastening holes, and each part of the supporting circular plate is provided with a number of evenly distributed bearing columns, and the upper and lower surfaces of the bearing columns are symmetrically provided with upper hanging plate tooth blocks and lower hanging plate tooth blocks, and the hanging plate tooth blocks and the lower hanging plate tooth blocks are symmetrically provided with radial sample hanging holes and tangential sample hanging holes respectively; The cooling water tank includes a water tank shell, a cooling coil A, and a drain valve. The cooling coil A is placed inside the cooling water tank. An electric pressure relief exhaust valve is provided on the pipe connecting the cooling coil A inlet and the ball valve A on the exhaust pipe of the experimental tank 6. The cooling water tank includes a water tank shell and a cooling coil B. The water tank shell has a built-in cooling coil B23. A ball valve E is provided on the pipe connecting the cooling water tank inlet and the cooling circulating water inlet, and a ball valve G is provided on the pipe connecting the cooling water tank outlet and the cooling circulating water return. A ball valve D is provided on the pipe connecting the cooling coil B inlet and the ball valve C on the experimental tank drainage pipe, and a ball valve F is provided on the cooling coil B outlet pipe.

[0007] The measurement and control system includes signal input and control output. The measurement and control system is connected to the temperature measuring thermocouple A, pressure gauge, and temperature measuring thermocouple B through the signal input, and is connected to the electric pressure relief exhaust valve and frequency conversion motor through the control output.

[0008] The above-mentioned high-temperature and high-pressure fluid medium corrosion experimental device, wherein: 2 / 3 of the lower outer surface of the experimental tank is covered with an insulation layer.

[0009] The above-mentioned high-temperature and high-pressure fluid medium corrosion experimental device, wherein: the hanging plate and fastening bolts are made of heat-resistant and pressure-resistant hard polyetheretherketone polymer material.

[0010] The above-mentioned high-temperature and high-pressure fluid medium corrosion experimental device, wherein: the experimental tank is equipped with a liquid level gauge, a pressure gauge, a temperature measuring thermocouple A, a temperature measuring thermocouple B, a ball valve B, a ball valve C, and a safety valve.

[0011] Compared with the prior art, the present invention has the following beneficial effects. From the above technical solutions, it can be seen that the present invention selects to fix the metal hanging piece tangentially or radially along the hanging plate, studies the different phenomena and mechanisms of the hanging piece being subjected to fluid frontal erosion corrosion and side erosion corrosion, uses bolts, nuts and hanging plate structures to limit the hanging piece's freedom of movement in all directions of three-dimensional space, and after the hanging piece is hung and tightened, the hanging piece will not fall off, tilt, rotate or other problems under the erosion of the flowing corrosive medium. It can be used to carry out flow corrosion tests such as fluid erosion, laminar flow, eddy current, and turbulent flow, with a wider range of test conditions. A single hanging plate is designed with 24 teeth and can hang 48 hanging pieces at a time. During the experiment, multiple hanging plates can be installed as needed, which can double the amount of hanging samples and enable simultaneous corrosion experiments on multiple materials under the same working conditions. This greatly broadens the research direction, significantly improves the efficiency of corrosion experiments, and significantly saves research and testing costs.

[0012] The stirring shaft of the present invention drives the stirring blades to stir the fluid medium in the experimental tank to flow at a constant speed, can realize static and dynamic coupon corrosion experiments under high temperature and high pressure, and has the functions of conducting static corrosion experiments and erosion accelerated corrosion experiments. It can also set different output speeds of the variable frequency motor according to experimental requirements to study the corrosion phenomenon and mechanism of the coupon when it is eroded by fluids at different speeds. The experimental research conditions are more comprehensive and closer to engineering applications.

[0013] The present invention adopts a high-strength experimental tank with good mechanical properties, which can realize corrosion experiments in fluid environments ranging from room temperature to high temperature and high pressure. The inner wall of the experimental tank is sprayed with an anti-corrosion coating or a heat-resistant polymer sealing inner membrane is installed in the tank to ensure that the corrosive medium does not contact the tank body, prevent the tank body from corroding during the experiment and affect the experimental results, thereby ensuring the accuracy of the experiment. The hanging plate of the present invention is made of a polymer material with high heat resistance and pressure resistance and high strength and hardness, and the polymer material bolts and nuts of the same material as the hanging plate are used to fasten the hanging plate. This not only ensures that the hanging plate and the bolts and nuts have good mechanical properties under the high temperature and pressure environment and the scouring effect of the flowing medium to ensure long-term, stable and smooth experimental research, but also avoids the problem of galvanic corrosion between the bolts and nuts and the hanging plate, between the hanging plate tooth block and the hanging plate, and between the hanging plates, thereby improving the accuracy of the experiment. The exhaust and drain ends of the experimental tank are both equipped with rapid cooling devices. During the experiment, there is no need to wait for the experimental medium to cool down naturally. After opening the exhaust valve and drain valve, the cooling water tank at the exhaust end and the cooling water tank at the drain end can quickly reduce the temperature of the experimental medium, which makes the replacement of the experimental medium faster, the experimental cycle is closely connected, the time consumption is shorter, and the efficiency is higher.

[0014] The measurement and control system of the present invention has the functions of monitoring signal input and control instruction output, can realize remote monitoring and control, monitor the pressure in the experimental tank throughout the process, and set the electric pressure relief and steam exhaust valve with overpressure interlocking start and stop function. When the pressure in the experimental tank reaches the set start value, the electric pressure relief and steam exhaust valve automatically opens to exhaust steam and relieve pressure to ensure the safety of the experimental personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the hanging plate structure of the present invention.

[0017] Figure 3 This is a schematic diagram of the disassembled structure of the hanging plate of the present invention.

[0018] Figure 4 for Figure 2 Schematic diagram of the structure viewed from above.

[0019] Figure 5 It is a structural schematic diagram of the hanging plate tangentially installed hanging piece of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the radial installation of hanging pieces on the hanging plate of the present invention.

[0021] Figure 7 Schematic diagram of the coupon structure used for corrosion experiments.

[0022] Markings in the figure: 1. Thermocouple A for temperature measurement; 2. Drain valve; 3. Cooling water tank; 4. Cooling coil A; 5. Insulation layer; 6. Experimental tank; 7. Safety valve; 8. Pressure gauge; 9. Electric pressure relief valve; 10. Ball valve A; 11. Frequency conversion motor; 12. Liquid level gauge; 13. Stirring shaft; 14. Hanging plate; 14-1. Round fastening ear buckle; 14-2. Fastening part; 14-3. Fastening hole; 14-4. Bearing column; 14-5. Upper hanging tooth block; 14-6. Radial hanging hole; 14-7. Lower hanging tooth block; 14-8. Cutting 14-9, support disc; 14-10, tangential sample hanging hole; 14-11, hanging plate fastening bolt; 15, hanging plate; 16, stirring blade; 17, cooling circulating water inlet; 18, electric heating tube; 19, signal input; 20, control output; 21, measurement and control system; 22, cooling water tank; 23, cooling coil B; 24, cooling circulating water return; 25, ball valve B; 26, temperature measuring thermocouple B; 27, ball valve C; 28, ball valve D; 29, ball valve E; 30, ball valve F; 31, ball valve G. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings and preferred embodiments to describe in detail the specific implementation, structure, features and functions of a high-temperature and high-pressure fluid medium corrosion test device proposed by the present invention. like Figure 1 As shown, a high-temperature and high-pressure fluid medium corrosion experimental device includes an experimental tank 6, a cooling water tank 3, a cooling water tank 22, and a measurement and control system 21. The exhaust port of the experimental tank 6 is connected to the steam inlet of the cooling water tank 3, and the drain port of the experimental tank 6 is connected to the water inlet of the cooling water tank 22, wherein: The experimental tank 6 is equipped with a stirring shaft 13, and an electric heating tube 18 is mounted on the lower part (for heating the corrosive medium in the experimental tank 6). The stirring shaft 13 is connected to the variable frequency motor 11, and a hanging plate 14 (for hanging the test coupon) is fixed to the middle section of the stirring shaft. The bottom end of the stirring shaft 13 is connected to the stirring blade 16 (for stirring the corrosive medium in the experimental tank 6); 2 / 3 of the lower outer surface of the experimental tank 6 is covered with an insulation layer 5 (for reducing heat loss from the experimental tank 6 and the electric heating tube 18). As shown in FIG6 , the hanging plate 14 and the fastening bolts 14-11 are made of heat-resistant and pressure-resistant hard polyetheretherketone (PEEK) polymer material; the hanging plate 14 is composed of two symmetrical parts, and the circular fastening ears 14-1 of the two parts are connected as a whole through the fastening holes 14-3 of the fastening part 14-2, and the hanging plate 14 is fixed to the stirring shaft 13 with screws through the tangential bolt fastening holes 14-8 without rotation or sliding. A number of evenly divided bearing columns 14-4 are provided on the supporting disc 14-9 of each part, and the bearing columns 14-4 are symmetrically provided with upper hanging tooth blocks 14-5 and lower hanging tooth blocks 14-7 on the upper and lower sides, and the hanging tooth blocks 14-5 and lower hanging tooth blocks 14-7 are symmetrically provided with radial hanging holes 14-6 and tangential hanging holes 14-10 respectively.

[0024] The experimental tank 6 (used to contain corrosive medium) is equipped with a liquid level gauge 12 (used to monitor the liquid level of the corrosive medium in the experimental tank 6), a pressure gauge 8 (used to monitor the internal pressure of the experimental tank 6), a temperature measuring thermocouple A1 (used to monitor the temperature of the electric heating tube 18 mounted on the bottom of the experimental tank 6), a temperature measuring thermocouple B26 (used to monitor the temperature of the corrosive medium in the experimental tank 6), a ball valve B25 (used to open and close the corrosive medium injection pipe of the experimental tank 6), a ball valve C27 (used to open and close the drainage pipe of the experimental tank 6), and a safety valve 7 (used to exhaust and relieve pressure of the experimental tank 6 in the event of overpressure).

[0025] The cooling water tank 3 (used to cool the high-temperature steam discharged from the experimental tank 6) includes a water tank shell (used to hold additional cooling water), a cooling coil A4 (serving as a pipe for discharging the high-temperature steam from the experimental tank 6 and exchanging heat with the cooling water), and a drain valve 2 (used to drain the cooling water from the cooling water tank). The cooling coil A4 is placed in the cooling water tank 3. An electric pressure relief steam valve 9 (used to open and close the steam discharged from the ball valve A10) is installed on the pipe connecting the inlet of the cooling coil A4 to the ball valve A10 on the exhaust pipe of the experimental tank 6 (used to open and close the exhaust pipe of the experimental tank 6). The cooling water tank 22 (used to cool the corrosive medium discharged from the experimental tank 6) includes a water tank shell (used to hold cooling circulating water), a cooling coil B23 (serving as a channel for the corrosive medium discharged from the experimental tank 6 to exchange heat with the cooling circulating water), and the cooling coil B23 is built into the water tank shell; a ball valve E29 (used to switch the cooling circulating water inlet 17) is provided on the pipe connecting the inlet of the cooling water tank 22 and the cooling circulating water inlet 17, and a ball valve G31 (used to switch the cooling circulating water return 24) is provided on the pipe connecting the outlet of the cooling water tank 22 and the cooling circulating water return 24; a ball valve D28 (used to switch the ball valve C27 drainage pipe) is provided on the pipe connecting the inlet of the cooling coil B23 and the ball valve C27 on the drainage pipe of the experimental tank 6, and a ball valve F30 is provided on the outlet pipe of the cooling coil B23.

[0026] Measurement and control system 21 (for receiving signals and outputting commands) includes signal input 19 (for receiving temperature and pressure signals fed back by thermocouple A1, pressure gauge 8, and thermocouple B26) and control output 20 (for outputting opening and closing commands for the electric pressure relief and exhaust valve 9 and speed commands for the variable-frequency motor 11). Measurement and control system 21 connects to thermocouple A1, pressure gauge 8, and thermocouple B26 via signal input 19, and to the electric pressure relief and exhaust valve 9 and variable-frequency motor 11 via control output 20. The variable-frequency motor 11 has a speed range of 0 to 750 rpm and is connected to measurement and control system 21. Remote manual adjustment of the speed setting is supported during corrosion experiments. The measurement and control system 21 is equipped with a real-time monitoring function for overpressure and overtemperature and can meet remote control requirements. It includes a pressure gauge 8, a temperature measuring thermocouple A1, a temperature measuring thermocouple B26, an electric pressure relief steam exhaust valve 9, a signal input 19, a control output 20, and a measurement and control system 21. It is used to monitor the real-time pressure in the experimental tank 6. Once the pressure in the tank exceeds the set pressure upper limit, the electric pressure relief steam exhaust valve 9 will automatically open to exhaust and relieve pressure.

[0027] Here’s how it works: like Figure 5-7 As shown, a metal coupon 15 is made from the metal to be tested, using appropriate specifications according to relevant standards. A 2mm diameter mounting hole is machined in the center of one end of the coupon 15. The coupon must be manufactured with guaranteed surface finish and dimensional accuracy. However, insufficient surface finish will affect the test results; insufficient hole precision may result in the inability to mount the sample.

[0028] Remove all debris from the surface of the metal coupon 15, remove surface oil with anhydrous ethanol or phosphoric acid, rinse with distilled water and anhydrous ethanol, absorb dryness with filter paper, dry with a hair dryer (note to use cold air), and then put it in an oven to dry.

[0029] The cleaned metal coupon 15 cannot be directly picked up by hand. Wear dust-proof gloves and place it on clean filter paper. After the metal coupon 15 is dried, let it cool to room temperature and weigh it with an analytical balance to obtain its initial weight.

[0030] The metal hanging piece 15 is fixed on the upper hanging piece tooth block 14-5 and the lower hanging piece tooth block 14-7 of the hanging plate 14 with bolts 14-11. The direction of the metal hanging piece 15 is consistent. The metal hanging piece 15 can be symmetrically fixed on the hanging piece tooth block 14-5 and the lower hanging piece tooth block 14-7 along the tangential direction of the hanging plate 14 through the tangential hanging sample hole 14-10 (such as Figure 5 as shown) or fixed symmetrically through radial sample holes 14-6 (as shown Figure 6 As shown in FIG, a metal hanging piece is mounted so that the maximum corrosion surface of the metal hanging piece 15 is parallel to or perpendicular to the stirring shaft 13.

[0031] Put the stirring shaft 13 together with the hanging plate 14 and the metal hanging piece 15 into the experimental tank 6, and tighten the connecting nut between the stirring shaft 13 and the experimental tank 6.

[0032] Use softened water as the corrosive medium, open the ball valve B25, ball valve A10 and electric pressure relief and exhaust valve 9 connected to the experimental tank 6, and introduce softened water at room temperature into the experimental tank 6. When the liquid level reaches about 2 / 3 of the height of the experimental tank, close the water inlet ball valve B25 and electric pressure relief and exhaust valve 9 of the experimental tank 6, and check the stability of each component and the airtightness of the closed system.

[0033] Turn on the temperature and pressure measurement and control equipment in the measurement and control system 21, turn on the variable frequency motor 11 and set the test speed, set the heating temperature of the test tank 6 to the test temperature, set the heating temperature of the electric heating tube 18 to slightly higher than the test temperature inside the test tank 6, and start heating. It should be noted that due to the temperature gradient between the test temperature inside the test tank 6 and the surface temperature of the electric heating tube 18, the heating temperature of the electric heating tube 18 needs to be set slightly higher than the test temperature inside the test tank 6 to ensure that the temperature inside the test tank 6 reaches the test temperature and to achieve dynamic constant temperature inside the test tank 6 through the measurement and control system 21.

[0034] After the measurement and control system 21 indicates that the temperature inside the test tank 6 has reached the set temperature, the heating temperature of the electric heating tube 18 and the set temperature of the test tank 6 are maintained, and the measurement and control system 21 remains normally open. During the experiment, following the above steps, different speeds of the variable-frequency motor 11, different corrosion cycles of the coupon 15, and different corrosion temperatures of the test tank 6 were set to simulate high-temperature, high-pressure, dual-oriented, multi-media, and multi-speed corrosion experiments commonly used in engineering applications. It should be noted that during the experiment, the measurement and control system 21 was fully open, the safety valve 7 was normally closed, and the ball valve A10 was normally open. The experimenter operated remotely to ensure experimental safety.

[0035] After the experiment is over, the measurement and control system 21 is turned off, the variable frequency motor 11 is turned off, the electric pressure relief steam exhaust valve 9 is opened, and the high-temperature water vapor is quickly cooled in the cooling water tank 3 and then discharged from the device through the drain valve 2.

[0036] Open the ball valve E29 at the rear end of the cooling circulating water inlet 17 and the ball valve G31 at the rear end of the cooling circulating water return 24, open the drain ball valve C27 at the bottom of the experimental tank 6, introduce the high-temperature water into the cooling water tank 22 for rapid cooling, and then discharge it through the ball valve F30.

[0037] After taking out the experimental coupon 15 to observe and record the morphology and distribution of corrosion products on the surface of the sample, loose corrosion products on the surface of the coupon 15 are removed by mechanical methods, chemical methods, etc.

[0038] Rinse with distilled water and anhydrous ethanol, then clean with an ultrasonic cleaner, wipe and dry, observe and record the surface morphology of the coupon 15 again, dry for 24 hours, and then weigh.

[0039] The mass difference before and after corrosion was calculated, and the corrosion rate of the uniform corrosion of the coupon 15 was calculated using the weight method.

[0040] If necessary, further observation and testing of coupon 15 should be carried out to analyze the corrosion morphology and products, find out the cause of corrosion, and explore the corrosion mechanism.

[0041] After the experiment, the softened water was sampled and retained for subsequent testing and analysis.

[0042] The present application provides a high-temperature and high-pressure fluid medium corrosion experimental device, which is placed in a high-temperature and high-pressure experimental tank. It can carry out multi-condition and multi-working-state rotating erosion accelerated corrosion experiments by designing a new hanging plate to hang hanging pieces with different orientations, adding multiple fluid media into the experimental tank, and remotely setting a variable-frequency motor to drive the rotating hanging plate at different speeds. It can realize the corrosion resistance performance test of metal materials under high-temperature and high-pressure dual-orientation multi-medium multi-speed erosion conditions, and simulate the dynamic erosion corrosion experiment of the hanging piece in a high-temperature and high-pressure dual-orientation multi-medium multi-flow rate service environment. It solves the problem that in the process of studying the erosion corrosion of metal materials in a multi-variable and complex service environment, it is necessary to rely on actual operating devices to carry out hanging piece experiments, and realizes the observation of the erosion corrosion morphology of metal materials in the above-mentioned environment and the rapid and accurate analysis of the mechanism, providing theoretical support for improving the level of research on the erosion corrosion resistance of materials in the above-mentioned service environment and for accurately judging the actual service life of materials in the above-mentioned environment.

[0043] The above method is only a preferred embodiment of the present invention and does not impose any formal limitation on the present invention. Without departing from any technical solution content of the present invention, any simple modification, equivalent change and modification made to the above implementation case based on the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A high-temperature and high-pressure fluid medium corrosion experimental device, comprising an experimental tank (6), a cooling water tank (3), a cooling water tank (22), and a measurement and control system (21), wherein the steam exhaust port of the experimental tank (6) is connected to the steam inlet of the cooling water tank (3), and the drain port of the experimental tank (6) is connected to the water inlet of the cooling water tank (22), and is characterized in that: The experimental tank (6) is equipped with a stirring shaft (13), and an electric heating tube (18) is mounted on the lower part. The stirring shaft (13) is connected to the variable frequency motor (11). The hanging plate (14) is fixed to the middle section of the stirring shaft, and the bottom end of the stirring shaft (13) is connected to the stirring blade (16). The hanging plate (14) is composed of two symmetrical parts. The circular fastening ears (14-1) of the two parts are connected to each other through the fastening holes (14-3) of the fastening part (14-2), and are fastened by tangential bolts. (14-8) The hanging plate (14) is fixedly mounted on the stirring shaft (13) with screws, and a plurality of equally distributed bearing columns (14-4) are provided on the supporting disc (14-9) of each part, and an upper hanging tooth block (14-5) and a lower hanging tooth block (14-7) are symmetrically provided on the upper and lower sides of the bearing column (14-4), and the hanging tooth block (14-5) and the lower hanging tooth block (14-7) are symmetrically provided with radial hanging holes (14-6) and tangential hanging holes (14-10) respectively; The cooling water tank (3) includes a water tank shell, a cooling coil A (4), and a drain valve (2). The cooling coil A (4) is placed in the cooling water tank (3). An electric pressure relief exhaust valve (9) is provided on a pipe connecting the inlet of the cooling coil A (4) and the ball valve A (10) on the exhaust pipe of the experimental tank (6). The cooling water tank (22) includes a water tank shell and a cooling coil B (23), wherein the cooling coil B (23) is built into the water tank shell; a ball valve E (29) is provided on the pipe connecting the inlet of the cooling water tank (22) and the cooling circulating water inlet (17); a ball valve G (31) is provided on the pipe connecting the outlet of the cooling water tank (22) and the cooling circulating water return (24); a ball valve D (28) is provided on the pipe connecting the inlet of the cooling coil B (23) and the ball valve C (27) on the drainage pipe of the experimental tank (6); and a ball valve F (30) is provided on the outlet pipe of the cooling coil B (23); The measurement and control system (21) includes a signal input (19) and a control output (20). The measurement and control system (21) is connected to the temperature measuring thermocouple A (1), the pressure gauge (8), and the temperature measuring thermocouple B (26) through the signal input (19), and is connected to the electric pressure relief steam exhaust valve (9) and the variable frequency motor (11) through the control output (20).

2. A high-temperature and high-pressure fluid medium corrosion test device according to claim 1, characterized in that: The lower outer surface 2 / 3 of the experimental tank (6) is covered with an insulation layer (5).

3. A high-temperature and high-pressure fluid medium corrosion test device according to claim 1, characterized in that: The hanging plate (14) and the fastening bolts (14-11) are made of heat-resistant and pressure-resistant hard polyetheretherketone polymer material.

4. A high-temperature and high-pressure fluid medium corrosion test device according to claim 1, characterized in that: The experimental tank (6) is equipped with a liquid level gauge (12), a pressure gauge (8), a temperature measuring thermocouple A (1), a temperature measuring thermocouple B (26), a ball valve B (25), a ball valve C (27), and a safety valve (7).

Images