Large-size high-temperature and high-pressure water environment structural performance coupling test system

Abstract

The invention discloses a large-size high-temperature and high-pressure water environment structural performance coupling test system which comprises an autoclave, a high-temperature and high-pressure circulating water system, a control and measurement system and a data collection system. The high-pressure kettle comprises a kettle body and a kettle cover, a rotating disc is rotationally arranged at the inner bottom of the kettle body, and a clamping assembly for clamping a sheet-shaped sample is arranged at the top of the rotating disc; the high-temperature and high-pressure circulating water system is communicated with the high-pressure kettle and is used for providing a dynamic high-temperature and high-pressure The control and measurement system is used for measuring and controlling related parameters in the autoclave and the high-temperature and high-pressure circulating water system; and the data collection system is used for collecting and processing related parameters in the autoclave and the high-temperature and high-pressure circulating water system. According to the device, the states of a sheet-shaped sample of a pipeline material at different flow velocities can be simulated through the rotating disc, so that the condition of a pipeline in a high-temperature and high-pressure water environment is simulated, and the corrosion condition of the pipeline at different flow velocities is tested and researched.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of material experiments, in particular to a large-size high-temperature high-pressure water environment structure performance coupling test system. BACKGROUND

[0002] The secondary circuit pipes of a pressurized water reactor nuclear power plant, such as feedwater pipes and drain pipes, are usually made of carbon steel. These pipes are prone to flow-accelerated corrosion (FAC) when they are used for a long time in a high-temperature high-pressure water environment, which may cause the pipes to be locally thinned. If the problem is not found and treated in time, the pipes may be ruptured, and a large amount of high-temperature steam or water may be released, thereby seriously affecting the safe operation of the nuclear power plant.

[0003] Therefore, in order to better study the corrosion of pipe materials in a high-temperature high-pressure water environment and the influence of liquid flow speed on pipe corrosion, the application provides a large-size high-temperature high-pressure water environment structure performance coupling test system. SUMMARY

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide a large-size high-temperature high-pressure water environment structure performance coupling test system.

[0005] The application provides a large-size high-temperature high-pressure water environment structure performance coupling test system, which comprises an autoclave, a high-temperature high-pressure circulating water system, a control and measurement system and a data collection system.

[0006] The autoclave comprises a kettle body and a kettle cover, the kettle cover is detachably and sealingly connected to the top of the kettle body, a rotating disc is rotatably arranged at the inner bottom of the kettle body, a clamping assembly for clamping sheet-shaped samples is arranged at the top of the rotating disc, the clamping assembly is used for arranging a plurality of sheet-shaped samples in a concentric circle, and an electrode assembly for detecting electrochemical signals on the surface of the sheet-shaped samples is arranged on the kettle cover.

[0007] The outlet end of the high-temperature high-pressure circulating water system is in communication with the inlet end of the autoclave through a first pipeline, and the outlet end of the high-temperature high-pressure circulating water system is in communication with the outlet end of the autoclave through a second pipeline, so as to provide a dynamic high-temperature high-pressure water environment.

[0008] The control and measurement system is used for measuring and controlling the related parameters in the autoclave and the high-temperature high-pressure circulating water system.

[0009] The data collection system is used for collecting and processing the related parameters in the autoclave and the high-temperature high-pressure circulating water system.

[0010] Further, the outer part of the kettle body is provided with a heat preservation layer, and a heating element is arranged between the heat preservation layer and the outer wall of the kettle body.

[0011] Further, the high-pressure kettle is connected with a pressure gauge and a thermometer, the pressure gauge is used for detecting and displaying the pressure in the kettle body, and the thermometer is used for detecting and displaying the temperature in the kettle body.

[0012] Further, a base is further included, the high-pressure kettle is fixedly arranged on the base, a driving motor is fixedly arranged below the high-pressure kettle, an output end of the driving motor is fixedly connected with a rotating shaft, and the other end of the rotating shaft extends into the kettle body and is fixedly connected with the center of the rotating disc.

[0013] Further, the clamping assembly includes an upper clamping plate, a lower clamping plate and a connecting column, the upper clamping plate and the lower clamping plate are detachably connected through the connecting column, a plurality of groups of clamping grooves one are arranged on the bottom surface of the upper clamping plate, the plurality of groups of clamping grooves one are arranged in concentric circles, a plurality of groups of clamping grooves two are arranged on the top surface of the lower clamping plate, and the plurality of groups of clamping grooves two correspond to the plurality of groups of clamping grooves one one by one.

[0014] Further, a square column is fixedly arranged on the top surface of the rotating disc, a threaded column one is coaxially and fixedly connected with the top of the square column, square holes are arranged in the centers of the upper clamping plate and the lower clamping plate and used for the square column to penetrate through, a fastening nut one is threadedly connected with the outer part of the threaded column one, the bottom of the fastening nut one is used for abutting against the top of the upper clamping plate, and a limiting block is fixedly arranged on the top of the rotating disc.

[0015] Further, the connecting column includes a first rod body and threaded columns two fixedly arranged at the two ends of the first rod body, the diameter of the first rod body is greater than that of the threaded columns two, and fastening nuts two are threadedly connected with the outer parts of the threaded columns two.

[0016] Further, insulating gaskets are arranged on the inner walls of the clamping grooves one and the clamping grooves two, and a recess is communicatively arranged on one side of the clamping grooves one, and a conductive block used for contacting the surface of a sheet-shaped sample is arranged in the recess.

[0017] Further, the electrode assembly includes a reference electrode seat, a working electrode seat and an auxiliary electrode seat fixedly installed on the top surface of the kettle cover, a reference electrode is arranged in the reference electrode seat, one end of the reference electrode is inserted into the kettle body, and the other end of the reference electrode is connected to an electrochemical workstation, an auxiliary electrode is arranged in the auxiliary electrode seat, one end of the auxiliary electrode is inserted into the kettle body, and the other end of the auxiliary electrode is connected to the electrochemical workstation, the working electrode seat is connected with the conductive block through a conductive slip ring, and the working electrode seat is connected to the electrochemical workstation through a wire.

[0018] Further, the lifting driving device is connected with the kettle cover and used for driving the kettle cover to ascend or descend.

[0019] The present application has the following advantages over the prior art:

[0020] The present application provides a dynamic high-temperature and high-pressure water environment through a high-temperature and high-pressure circulating water system, measures and controls relevant parameters in the autoclave and the high-temperature and high-pressure circulating water system through a control and measurement system, collects and processes the relevant parameters in the autoclave and the high-temperature and high-pressure circulating water system through a data collection system, facilitates the formation of a high-temperature and high-pressure water environment in the autoclave, simulates the state of a sheet-shaped sample of a pipeline material at different flow rates through a rotating disc, thereby simulating the flow rate corrosion of the pipeline at different flow rates in the high-temperature and high-pressure water environment, and realizes real-time detection of the corrosion of the pipeline material through the electrode assembly.

[0021] It should be understood that the content described in the summary section is not intended to limit the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0022] Other features, objects and advantages of the present application will become more apparent through reading the detailed description of the non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 It is a schematic diagram of the structure of the autoclave;

[0025] Figure 3 It is a schematic diagram of the structure of the clamping assembly;

[0026] Figure 4 It is a schematic diagram of the structure of the rotating disc, square column, threaded column and limiting block;

[0027] Figure 5 It is a schematic diagram of the structure of the connecting rod;

[0028] Figure 6 It is a schematic diagram of the bottom surface structure of the upper clamping plate;

[0029] Figure 7 It is a schematic diagram of the top surface structure of the lower clamping plate;

[0030] The figure label: 1, autoclave; 2, rotating disc; 3, clamping assembly; 4, electrode assembly; 5, first pipeline; 6, second pipeline; 7, heating element; 8, pressure gauge; 9, thermometer; 10, base; 11, driving motor; 12, rotating shaft; 13, square column; 14, fastening nut one; 15, limiting block; 16, lifting driving device;

[0031] 101, kettle body; 102, kettle cover;

[0032] 301, upper clamping plate; 302, lower clamping plate; 303, connecting column; 304, fastening nut two;

[0033] 401, reference electrode seat; 402, working electrode seat; 403, auxiliary electrode seat;

[0034] 3011, card slot one; 3012, square hole;

[0035] 3021, card slot two;

[0036] 3031, first rod body; 3032, threaded column two. DETAILED DESCRIPTION

[0037] The application will be described in further detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, and are not a limitation on the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for ease of description.

[0038] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict. The application will be described in further detail below with reference to the drawings and embodiments.

[0039] Please refer to Figures 1-7 The embodiments of the application provide a large-size high-temperature high-pressure water environment structure performance coupling test system, which is used for testing the corrosion of a sheet-shaped sample of a pipeline in a high-temperature high-pressure water environment, so as to test the influence of flow accelerated corrosion on the pipeline material under the high-temperature high-pressure water environment.

[0040] The application includes an autoclave 1, a high-temperature high-pressure circulating water system, a control and measurement system and a data collection system;

[0041] The autoclave 1 includes a kettle body 101 and a kettle cover 102, the kettle cover 102 is detachably and sealingly connected to the top of the kettle body 101, a rotating disc 2 is rotationally arranged on the inner bottom of the kettle body 101, a clamping assembly 3 for clamping sheet-shaped samples is arranged on the top of the rotating disc 2, the clamping assembly 3 is used for arranging a plurality of sheet-shaped samples in a concentric circle, and an electrode assembly 4 for detecting electrochemical signals on the surface of the sheet-shaped samples is arranged on the kettle cover 102;

[0042] The outlet end of the high-temperature and high-pressure circulating water system is communicated with the inlet end of the autoclave 1 through a first pipeline 5, and the outlet end of the high-temperature and high-pressure circulating water system is communicated with the outlet end of the autoclave 1 through a second pipeline 6, for providing a dynamic high-temperature and high-pressure water environment;

[0043] The control and measurement system is used for measuring and controlling the related parameters in the autoclave 1 and the high-temperature and high-pressure circulating water system.

[0044] The data collection system is used for collecting and processing the related parameters in the autoclave 1 and the high-temperature and high-pressure circulating water system.

[0045] Specifically, the cover 102 is fixedly installed on the top of the autoclave body 101 by bolts, and a sealing ring is arranged at the bottom of the cover 102. The cover 102 is sealingly installed on the top opening of the autoclave body 101 to form a closed space in the autoclave 1 and maintain a high-temperature and high-pressure environment.

[0046] During testing, the cover 102 is opened, the plurality of sheet-shaped samples are fixed by the clamping assembly 3, and the plurality of sheet-shaped samples are arranged in concentric circles. Then, the cover 102 is sealed, and the rotation disc 2 drives the clamping assembly 3 to rotate synchronously. Since the plurality of sheet-shaped samples are spaced apart at certain distances along the radial direction of the rotation disc 2, for example, the distances of three groups of sheet-shaped samples from the center of the rotation disc 2 are 18 mm, 33 mm and 48 mm, respectively. When the rotation disc 2 rotates, the flow rate ratio of the surfaces of the three groups of sheet-shaped samples is 18:33:48, thereby realizing different flow rates.

[0047] The high-temperature and high-pressure water generated by the high-temperature and high-pressure circulating water system continuously flows into and out of the autoclave 1, a high-temperature and high-pressure environment is formed in the autoclave 1, and the surface of the sheet-shaped sample is washed by the high-temperature and high-pressure circulating water. Under the rotation of the rotation disc 2, the surface of the sheet-shaped sample is washed at different flow rates to complete the testing process. In this process, the electrode assembly 4 tests the electrochemical performance of the sheet-shaped sample to complete real-time detection of the corrosion condition of the pipe material, overcomes the hysteresis of the traditional offline measurement method, and improves the timeliness and accuracy of the experimental data.

[0048] In a preferred embodiment, as shown in Figure 2 The autoclave body 101 is externally provided with a heat preservation layer, and a heating element 7 is arranged between the heat preservation layer and the outer wall of the autoclave body 101.

[0049] Specifically, the autoclave 1 is heated by the heating element 7 to achieve a high-temperature environment.

[0050] In a preferred embodiment, as shown in Figure 2 The autoclave 1 is connected with a pressure gauge 8 and a thermometer 9. The pressure gauge 8 is used to detect and display the pressure in the autoclave body 101, and the thermometer 9 is used to detect and display the temperature in the autoclave body 101.

[0051] In a preferred embodiment, as shown in Figure 2 The base 10 is further provided with the autoclave 1 fixedly arranged thereon, and the autoclave 1 is fixedly provided with a driving motor 11 below, and the output end of the driving motor 11 is fixedly connected with a rotating shaft 12, and the other end of the rotating shaft 12 extends into the autoclave body 101 and is fixedly connected with the center of the rotating disc 2.

[0052] Specifically, the autoclave body 101 is fixedly installed on the top of the base 10, and the base 10 provides an installation basis, and the rotating disc 2 is connected with a control and measurement system and a data collection system, and the control and measurement system is used to control the driving motor 11, and the driving motor 11 provides rotating power to drive the rotating disc 2 to rotate around the center line.

[0053] In a preferred embodiment, as shown in Figure 2 , Figure 3 , Figure 6 and Figure 7 The clamping assembly 3 comprises an upper clamping plate 301, a lower clamping plate 302 and a connecting column 303, the upper clamping plate 301 and the lower clamping plate 302 are detachably connected through the connecting column 303, the bottom surface of the upper clamping plate 301 is provided with a plurality of clamping grooves one 3011, the plurality of clamping grooves one 3011 are arranged in concentric circles, and the top surface of the lower clamping plate 302 is provided with a plurality of clamping grooves two 3021, and the plurality of clamping grooves two 3021 correspond to the plurality of clamping grooves one 3011 one by one.

[0054] Specifically, when clamping the sheet-shaped sample, the clamping assembly 3 is first taken out of the autoclave 1, the bottom end of the connecting column 303 is fixedly connected with the lower clamping plate 302, then the bottom end of the sheet-shaped sample is inserted into the clamping groove two 3021 on the lower clamping plate 302, then the upper clamping plate 301 is buckled on the top of the plurality of sheet-shaped samples, so that the top of the sheet-shaped sample is inserted into the clamping groove one 3011, and the top of the connecting column is fixedly connected with the upper clamping plate 301, thereby completing the clamping of the sheet-shaped sample, and then the clamping assembly 3 is put into the autoclave 1 as a whole and installed on the top of the rotating disc 2.

[0055] In a preferred embodiment, as shown in Figure 2 , Figure 3 and Figure 4 The top surface of the rotating disc 2 is fixedly provided with a square column 13, the top of the square column 13 is coaxially and fixedly connected with a threaded column one, the center of the upper clamping plate 301 and the lower clamping plate 302 is provided with a square hole 3012 for the square column 13 to penetrate, the outer part of the threaded column one is threadedly connected with a fastening nut one 14, the bottom of the fastening nut one 14 is used to abut against the top of the upper clamping plate 301, and the top of the rotating disc 2 is fixedly provided with a limiting block 15.

[0056] Specifically, after the sheet-shaped sample is clamped and fixed by the clamping assembly 3, the whole clamping assembly 3 is sleeved outside the square column 13 through the square hole 3012, the clamping assembly 3 is inserted into the outside of the square column 13 from top to bottom until the bottom surface thereof abuts against the limiting block 15 on the top surface of the rotating disc 2, then the clamping assembly 3 is fixed by the fastening nut 14, the clamping assembly 3 is limited by the limiting block 15, and the clamping assembly 3 is fixed by the direction column 13 and the square hole 3012, so as to conveniently drive the clamping assembly 3 to rotate synchronously when the rotating disc 2 rotates.

[0057] In a preferred embodiment, as shown in Figure 3 and Figure 5 The connecting column 303 includes a first rod body 3031 and a threaded column two 3032 fixedly arranged at both ends of the first rod body 3031, the diameter of the first rod body 3031 is greater than that of the threaded column two 3032, and the threaded column two 3032 is externally threadedly connected with the fastening nut two 304.

[0058] Specifically, the connecting column 303 is distributed in four groups in a rectangular shape, so as to stably connect the upper clamping plate 301 and the lower clamping plate 302.

[0059] In a preferred embodiment, as shown in Figure 2 and Figure 6 The inner walls of the clamping groove one 3011 and the clamping groove two 3021 are both provided with insulating gaskets, one side of the clamping groove one 3011 is communicatively provided with a recess, and the recess is provided with a conductive block for contacting the surface of the sheet-shaped sample.

[0060] Preferably, the electrode assembly 4 includes a reference electrode seat 401, a working electrode seat 402 and an auxiliary electrode seat 403 fixedly installed on the top surface of the cover 102, the reference electrode seat 401 is provided with a reference electrode, one end of the reference electrode is inserted into the kettle body 101, and the other end is connected to an electrochemical workstation, the auxiliary electrode seat 403 is provided with an auxiliary electrode, one end of the auxiliary electrode 403 is inserted into the kettle body 101, and the other end is connected to the electrochemical workstation, the working electrode seat 402 is connected with the conductive block through a conductive slip ring, and the working electrode seat 402 is connected to the electrochemical workstation through a wire.

[0061] Specifically, the wire slip ring is installed in the upper clamping plate 301, the stationary end wire of the conductive slip ring is connected to the working electrode seat 402, the rotating end wire is connected to the wire block, the conductive block contacts the sheet-shaped sample, the connection between the sheet-shaped sample and the external electrochemical workstation is realized, and the potential and current signals on the surface of the sheet-shaped sample are detected; the reference electrode is used to contact the liquid medium and provide a stable potential reference; the auxiliary electrode contacts the liquid medium and forms a current loop with the working electrode (sheet-shaped sample), and the corrosion of the sheet-shaped sample is detected through the working electrode (sheet-shaped sample), the reference electrode and the auxiliary electrode.

[0062] In a preferred embodiment, as shown in the drawings, the device further comprises a lifting driving device 16 connected with the cover 102 for driving the cover 102 to rise or fall. Figure 2

[0063] Specifically, the lifting driving device 16 can be selected from a screw driving device, a hydraulic cylinder driving device or a single cantilever lifting device, etc. which can realize lifting driving, and is not limited here.

[0064] Working principle:

[0065] The cover 102 is opened, and a plurality of sheet-shaped samples are fixed by the clamping assembly 3, and the plurality of sheet-shaped samples are arranged in concentric circles.

[0066] The clamping assembly 3 is fixedly installed on the direction column 13, so that the clamping assembly 3 can rotate with the rotation of the rotating disc 2.

[0067] Since the plurality of sheet-shaped samples are spaced apart at a certain distance along the radial direction of the rotating disc 2, the flow rates are different due to the different distances, and the multi-flow rate scouring simulation scene is realized.

[0068] The high-temperature and high-pressure water generated by the high-temperature and high-pressure circulating water system continuously flows into and out of the autoclave 1, a high-temperature and high-pressure environment is formed in the high-temperature autoclave 1, and the surface of the sheet-shaped sample is scoured by the high-temperature and high-pressure circulating water. Under the rotation of the rotating disc 2, the surface of the sheet-shaped sample is scoured at different flow rates, and the test process is completed.

[0069] In this process, the electrochemical performance of the sheet-shaped sample is tested by the electrode assembly 4, the real-time detection of the corrosion of the pipeline material is completed, the hysteresis of the traditional offline measurement method is overcome, and the timeliness and accuracy of the experimental data are improved.

[0070] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0071] In the description of this specification, the terms "one embodiment", "some embodiments" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] ​The above merely provides preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A large-scale high-temperature high-pressure water environment structural performance coupling test system, characterized in that, The high-pressure kettle comprises a kettle body and a kettle cover, the kettle cover is detachably and sealingly connected to the top of the kettle body, the inner bottom of the kettle body is rotationally provided with a rotating disc, the top of the rotating disc is provided with a clamping assembly for clamping sheet-shaped samples, the clamping assembly is used for arranging a plurality of sheet-shaped samples in concentric circles, and the kettle cover is provided with an electrode assembly for detecting electrochemical signals of the surfaces of the sheet-shaped samples. The outlet end of the high-temperature and high-pressure circulating water system is communicated with the inlet end of the high-pressure kettle through a first pipeline, and the outlet end of the high-temperature and high-pressure circulating water system is communicated with the outlet end of the high-pressure kettle through a second pipeline, so as to provide a dynamic high-temperature and high-pressure water environment. The control and measurement system is used for measuring and controlling the related parameters in the high-pressure kettle and the high-temperature and high-pressure circulating water system. The data collection system is used for collecting and processing the related parameters in the high-pressure kettle and the high-temperature and high-pressure circulating water system. The outer part of the kettle body is provided with a heat preservation layer, and a heating element is arranged between the heat preservation layer and the outer wall of the kettle body.

2. The large-scale high-temperature and high-pressure water environment structural performance coupling test system according to claim 1, characterized in that, The high-pressure kettle is connected with a pressure gauge and a thermometer, the pressure gauge is used for detecting and displaying the pressure in the kettle body, and the thermometer is used for detecting and displaying the temperature in the kettle body.

3. The large-scale high-temperature and high-pressure water environment structure performance coupling test system according to claim 2, characterized in that, The high-pressure kettle is fixedly arranged on the base, a driving motor is fixedly arranged below the high-pressure kettle, the output end of the driving motor is fixedly connected with a rotating shaft, and the other end of the rotating shaft extends into the kettle body and is fixedly connected with the center of the rotating disc.

4. The large-scale high-temperature and high-pressure water environment structural performance coupling test system according to claim 1, characterized in that, The clamping assembly comprises an upper clamping plate, a lower clamping plate and a connecting column, the upper clamping plate and the lower clamping plate are detachably connected through the connecting column, a plurality of groups of clamping grooves one are arranged on the bottom surface of the upper clamping plate and arranged in concentric circles, a plurality of groups of clamping grooves two are arranged on the top surface of the lower clamping plate, and each group of the clamping grooves two corresponds to each group of the clamping grooves one.

5. The large-scale high-temperature and high-pressure water environment structure performance coupling test system according to claim 4, characterized in that, The top surface of the rotating disc is fixedly provided with a square column, the top of the square column is coaxially and fixedly connected with a threaded column one, square holes are arranged in the centers of the upper clamping plate and the lower clamping plate and through which the square column penetrates, the outer part of the threaded column one is threadedly connected with a fastening nut one, the bottom of the fastening nut one is used for abutting against the top of the upper clamping plate, and the top of the rotating disc is fixedly provided with a limiting block.

6. The large-scale high-temperature high-pressure water environment structural performance coupling test system according to claim 5, characterized in that, The connecting column comprises a first rod body and a threaded column two fixedly arranged at the two ends of the first rod body, the diameter of the first rod body is greater than that of the threaded column two, and the outer part of the threaded column two is threadedly connected with a fastening nut two.

7. The large-scale high-temperature and high-pressure water environment structure performance coupling test system according to claim 6, characterized in that, Insulating gaskets are arranged on the inner walls of the clamping grooves one and the clamping grooves two, a recess is arranged on one side of the clamping grooves one in communication, and a conductive block for contacting the surface of a sheet-shaped sample is arranged in the recess.

8. The large-scale high-temperature and high-pressure water environment structure performance coupling test system according to claim 5, characterized in that, ​ 9. The large-scale high-temperature high-pressure water environment structure performance coupling test system according to claim 8, characterized in that, The electrode assembly comprises a reference electrode seat, a working electrode seat and an auxiliary electrode seat fixedly installed on the top surface of the kettle cover, the reference electrode seat is provided with a reference electrode, one end of the reference electrode is inserted into the kettle body, and the other end is connected to an electrochemical workstation, the auxiliary electrode seat is provided with an auxiliary electrode, one end of the auxiliary electrode is inserted into the kettle body, and the other end is connected to the electrochemical workstation, the working electrode seat is connected with the conductive block through a conductive slip ring, and the working electrode seat is connected to the electrochemical workstation through a wire.

10. The large-scale high-temperature and high-pressure water environment structural performance coupling test system according to claim 1, characterized in that, The lifting driving device is connected with the kettle cover and is used for driving the kettle cover to ascend or descend.

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