A system for elastic contact finger continuous flow corrosion simulation

Abstract

The application discloses a kind of for elastic contact finger continuous flow corrosion simulation system, pressure can be applied to contact finger, and it occurs elastic deformation, simulate the stress condition of contact finger under actual working condition, utilize the heating of whole oil temperature by electric heater on the lower end cover of cavity, further heating to contact finger is realized by inserting micro single-head heating tube in the heating hole at copper ring;Temperature sensor is inserted using temperature measuring hole on pressure plate, so that temperature regulation can be carried out, meet the requirement of temperature to experiment.The application utilizes the pressure sensor in upper end cover component to obtain the cavity pressure value in test, realizes the flow of oil sample using the circulating valve of upper end cover, realizes the continuous flow of contact finger using the positive and negative electrode lead of through-flow electrode fixed on the upper end cover to access the power anode and cathode hole on contact finger experimental assembly, the sulfur corrosion process and mechanism of elastic contact finger under different working conditions can be obtained.

Description

Technical Field

[0001] This invention relates to the field of testing elastic contact fingers of valve-side bushings in ultra-high voltage converter transformers, and specifically to a continuous flow corrosion simulation system for elastic contact fingers. Background Technology

[0002] Currently, all current-carrying connection parts in the riser area of ​​the UHV converter transformer valve side (from the valve side winding lead to the valve side bushing) adopt elastic electrical contact connection components (different types of spring strap fingers). There are as many as 8 strap finger connection structures in the riser area of ​​a single UHV converter transformer.

[0003] The metering contact finger connection structure between the bushing and winding in the riser area of ​​the UHV converter transformer valve side requires each current-carrying contact finger to maintain a relatively uniform current-carrying contact area and low contact resistance over a long period to achieve uniform current shunting and low-temperature operation. However, the metering contact fingers are affected by factors such as contact force, contamination layer, roughness, material properties, electroplating layer, and operating temperature, making it difficult to achieve uniform current shunting. Furthermore, the existing connection configuration of the metering contact fingers between the UHV converter transformer valve side bushing and winding does not comprehensively consider the influence of spring contact finger contact force, contamination layer, roughness, material properties, electroplating layer, and ambient temperature on contact resistance and current carrying capacity. Therefore, overheating and corrosion of the metering contact fingers cannot be completely avoided during long-term operation. Thus, it is urgent to conduct continuous current-carrying corrosion simulation tests on the elastic contact fingers of the valve side bushing. Summary of the Invention

[0004] The purpose of this invention is to provide a continuous flow corrosion simulation system for elastic fingers, which solves the problems existing in the prior art.

[0005] This invention is achieved through the following technical solution:

[0006] A continuous flow corrosion simulation system for elastic touch fingers includes a cylindrical cavity, an upper end assembly, a touch finger experimental assembly, a heating assembly, a flow assembly, a cavity upper end cover assembly, and a cavity lower end cover assembly.

[0007] The cylindrical cavity contains an oil sample and is used to construct a simulated environment for finger corrosion.

[0008] The upper end cap assembly of the cavity is disposed at one end of the cylindrical cavity, and the upper end cap assembly of the cavity is used to install various interfaces, sensors and touch experiment components.

[0009] The lower end cap assembly of the cavity is disposed at the other end of the cylindrical cavity, and the lower end cap assembly of the cavity is used to seal the other end of the cylindrical cavity and to install the heating assembly.

[0010] The upper end component is disposed on the side of the upper end cover component of the cavity away from the cylindrical cavity, and the upper end component is used to maintain the liquid level pressure of the oil sample in the cylindrical cavity;

[0011] The touch finger experimental assembly is disposed inside the cylindrical cavity, and the touch finger experimental assembly is fixed on the side of the upper end cover assembly of the cavity near the cylindrical cavity. The touch finger experimental assembly is used to install the touch finger, apply pressure to the touch finger, and apply current to the touch finger.

[0012] The heating component is disposed inside the cylindrical cavity and is fixed on the side of the lower end cover assembly of the cavity near the cylindrical cavity. The heating component is used to heat the oil sample inside the cylindrical cavity.

[0013] The flow-through component is disposed on the finger-touch experimental component, and the flow-through component is used to flow to the finger.

[0014] Furthermore, the cylindrical cavity is provided with multiple flange covers on its side, and the included angle between the axes of any two adjacent flange covers is the same.

[0015] Furthermore, the plurality of flange covers includes a first flange cover, a second flange cover, a third flange cover, and a fourth flange cover. The first flange cover, the second flange cover, the third flange cover, and the fourth flange cover are all disposed on the side of the cylindrical cavity, and the axes of the first flange cover, the second flange cover, the third flange cover, and the fourth flange cover are all perpendicular to the axis of the cylindrical cavity. The axial angles between the first flange cover and the second flange cover, between the second flange cover and the third flange cover, between the third flange cover and the fourth flange cover, and between the fourth flange cover and the first flange cover are all 90°.

[0016] Furthermore, the cavity upper end cover assembly includes a cavity upper end cover, a cavity safety valve, a flow electrode, a cavity vent, an endoscope port, a vacuum aviation plug, a pressure sensor, a circulation pump port, and a lifting ring;

[0017] The upper end cover of the cavity is located at one end of the cylindrical cavity. The cavity safety valve, flow electrode, cavity vent, endoscope port, vacuum aviation connector, pressure sensor, circulation pump port, and lifting ring are all located on the side of the upper end cover away from the cylindrical cavity. The cavity safety valve, flow electrode, cavity vent, endoscope port, vacuum aviation connector, pressure sensor, and circulation pump port are all connected to the internal space of the cylindrical cavity.

[0018] Furthermore, the lower end cover assembly of the cavity includes a lower end cover of the cavity, a heater connector, a sampling tube connector, an observation window, and an oil drain port;

[0019] The lower end cover of the cavity is fixed to the other end of the cylindrical cavity. The heater connector, sampling tube connector, observation window and oil drain port are all located on the side of the lower end cover away from the cylindrical cavity, and the heater connector, sampling tube connector, observation window and oil drain port are all connected to the internal space of the cylindrical cavity.

[0020] Furthermore, the upper component includes a vent valve, an oil inlet, a pressure relief valve, an oil tank, and an oil tank interface;

[0021] The oil conservator interface is located at one end of the oil conservator, and the vent valve, oil inlet and pressure relief valve are all located at the other end of the oil conservator. The oil conservator interface passes through the upper end cover of the cavity and connects to the cylindrical cavity.

[0022] Furthermore, the finger-touch experimental assembly includes a hanging plate, a pressure plate, a pressure head, a copper ring, a copper plate, and an XY slide table;

[0023] The hanging plate is fixed to the side of the upper end cover of the cavity near the cylindrical cavity, and the pressure plate is fixed to the hanging plate. The pressure plate is set as an arc plate, which forms a semi-enclosed space. The semi-enclosed space is used to limit the compression range of the finger.

[0024] The connection between the hanging plate and the upper end cover of the cavity is made of insulating material, or the entire hanging plate is made of insulating material, to prevent the upper end cover of the cavity from becoming electrified when the finger passes through.

[0025] At least one pressure head mounting groove is provided on the inner surface of the pressure plate, and a pressure head is provided in each pressure head mounting groove; the XY slide is provided on the end of the hanging plate away from the upper end cover of the cavity, and the copper plate is provided on the execution end of the XY slide; the copper ring is fixed on the copper ring, and a touch finger is installed on the copper ring.

[0026] Furthermore, the heating assembly includes an electric heating element, a temperature measuring hole, and a heating hole;

[0027] The electric heating tube is fixed to the side of the lower end cover of the cavity near the cylindrical cavity, the temperature measuring hole is set on the outer surface of the pressure plate, and the heating hole is set on the copper ring.

[0028] Furthermore, it also includes a sampling tube, one end of which is close to the finger, and the other end of which is connected to a sampling tube connector.

[0029] Furthermore, the current-passing assembly includes a power anode hole and a power cathode hole;

[0030] The current-passing electrode includes a cathode and an anode, the power supply anode hole is connected to the anode in the current-passing electrode, and the power supply cathode hole is connected to the cathode in the current-passing electrode;

[0031] The power supply anode hole is located on the pressure plate, and the power supply cathode hole is located on the copper ring.

[0032] The beneficial effects of this invention are as follows:

[0033] (1) The present invention provides a continuous current flow corrosion simulation system for elastic finger, which can use a current source with a similar waveform obtained by measuring the current waveform under actual working conditions to continuously flow through the finger via the current flow electrode. By using a pressure sensor and connecting the sensor with an aviation plug, experimental data such as pressure, temperature and vibration in the experiment can be obtained and analyzed.

[0034] (2) The present invention can use the XY slide table to change the position of the pressure head relative to the contact finger, thereby simulating the force situation of the contact finger under actual working conditions; at the same time, the experimental device uses the electric heater on the lower end cover to raise the oil temperature to simulate the working environment under normal working conditions of oil-immersed power equipment, and uses the circulating pump to simulate the circulation of transformer oil under actual working conditions to obtain the continuous flow contact finger corrosion process under actual operating conditions. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0036] Figure 1 This invention provides an overall structural diagram of a continuous flow corrosion simulation system for elastic touch fingers.

[0037] Figure 2 This is a schematic diagram of the cylindrical cavity, upper end assembly, and upper end cover assembly provided by the present invention.

[0038] Figure 3 The diagram shows the structure of the finger-touch experimental assembly, heating assembly, and flow-through assembly provided by the present invention.

[0039] Figure 4 A schematic diagram of the structure of the finger-touch experimental component provided by the present invention.

[0040] Figure 5 This is a schematic diagram of the structure of the cavity lower end cap assembly provided by the present invention.

[0041] The attached diagram shows the markings and corresponding component names:

[0042] 1-Vent valve, 2-Oil inlet, 3-Pressure relief valve, 4-Oil conservator, 5-Oil conservator interface, 6-Upper end cover of cavity, 7-Cavity safety valve, 8-Flow electrode, 9-Cavity vent hole, 19-Endoscope port, 11-Vacuum aviation connector, 12-Pressure sensor, 13-Circulation pump port, 14-Lifting ring, 15-First flange cover, 16-Second flange cover, 17-Third flange cover, 18-Fourth flange cover, 1 9-Lower end cap of cavity, 20-Cylindrical cavity, 21-Hanging plate, 22-Pressure plate, 23-Pressure head, 24-Touch finger, 25-Copper ring, 26-Copper plate, 27-XY slide, 28-Sampling tube, 29-Electric heating tube, 30-Temperature measuring hole, 31-Heating hole, 32-Power anode hole, 33-Power cathode hole, 34-Heater connector, 35-Sampling tube connector, 36-Observation window, 37-Oil drain port. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. Example

[0044] like Figures 1-5 As shown, a continuous flow corrosion simulation system for elastic touch fingers includes a cylindrical cavity, an upper end assembly, a touch finger experimental assembly, a heating assembly, a flow-through assembly, a cavity upper end cover assembly, and a cavity lower end cover assembly.

[0045] An oil sample is placed inside the cylindrical cavity, and the cylindrical cavity is used to construct a simulated environment for finger corrosion.

[0046] The upper end cap assembly is located at one end of the cylindrical cavity, and is used to install various interfaces, sensors, and touch-sensitive experimental components.

[0047] The lower end cap assembly is located at the other end of the cylindrical cavity, and is used to seal the other end of the cylindrical cavity and to install the heating assembly.

[0048] The upper component is located on the side of the upper end cover assembly of the cavity away from the cylindrical cavity, and the upper component is used to maintain the liquid level pressure of the oil sample in the cylindrical cavity.

[0049] The touch test assembly is located inside the cylindrical cavity and is fixed on the side of the upper end cover assembly of the cavity near the cylindrical cavity. The touch test assembly is used to install the touch finger, apply pressure to the touch finger, and apply current to the touch finger.

[0050] The heating component is located inside the cylindrical cavity and is fixed on the side of the lower end cap assembly of the cavity near the cylindrical cavity. The heating component is used to heat the oil sample inside the cylindrical cavity.

[0051] The flow passage component is mounted on the finger experimental component and is used to pass current to the finger.

[0052] Based on the continuous current corrosion simulation system for elastic contact fingers provided in this embodiment, the operating conditions of elastic contact fingers under actual operating conditions can be simulated by injecting transformer oil samples with different corrosive sulfur concentrations, and then experimental tests of continuous current corrosion simulation of elastic contact fingers can be carried out in the laboratory.

[0053] In one possible implementation, the cylindrical cavity 20 is provided with a plurality of flange covers on its side, and the included angle between the axes of any two adjacent flange covers is the same.

[0054] In one possible implementation, the plurality of flange covers includes a first flange cover 15, a second flange cover 16, a third flange cover 17, and a fourth flange cover 18. The first flange cover 15, the second flange cover 16, the third flange cover 17, and the fourth flange cover 18 are all disposed on the side of the cylindrical cavity 20, and the axes of the first flange cover 15, the second flange cover 16, the third flange cover 17, and the fourth flange cover 18 are all perpendicular to the axis of the cylindrical cavity 20. The axial angles between the first flange cover 15 and the second flange cover 16, between the second flange cover 16 and the third flange cover 17, between the third flange cover 17 and the fourth flange cover 18, and between the fourth flange cover 18 and the first flange cover 15 are all 90°.

[0055] Optionally, observation windows can be installed on the first flange cover 15, the second flange cover 16, the third flange cover 17, and the fourth flange cover 18 to facilitate observation of the experimental phenomena of the touch finger inside the cylindrical cavity after continuous flow.

[0056] In one possible implementation, the cavity upper end cap assembly includes a cavity upper end cap 6, a cavity safety valve 7, a flow electrode 8, a cavity vent 9, an endoscope port 10, a vacuum aviation plug 11, a pressure sensor 12, a circulation pump port 13, and a lifting ring 14.

[0057] The upper end cover 6 of the cavity is located at one end of the cylindrical cavity 20. The cavity safety valve 7, the flow electrode 8, the cavity vent 9, the endoscope hole 10, the vacuum aviation plug 11, the pressure sensor 12, the circulation pump port 13, and the lifting ring 14 are all located on the side of the upper end cover 6 away from the cylindrical cavity 20. The cavity safety valve 7, the flow electrode 8, the cavity vent 9, the endoscope hole 10, the vacuum aviation plug 11, the pressure sensor 12, and the circulation pump port 13 are connected to the internal space of the cylindrical cavity 20.

[0058] In this embodiment, the cavity safety valve 7 is used to reduce pressure in a timely manner when the internal pressure of the cavity is too high, ensuring experimental safety. The endoscope port 10 is used to insert an endoscope to observe the experimental conditions of specific areas. The vacuum aviation connector 11 is used to connect the wiring of each sensor, ensuring good airtightness of the entire cavity. The pre-installed vacuum aviation connector 11 facilitates the addition of sensors later. The pressure sensor 12 is used to measure the pressure inside the cylindrical cavity. The circulation pump port 13 is used to simulate the flow of oil samples under real engineering conditions. The lifting ring 14 is used to lift the device integrating the cavity upper cover 6, the lifting plate, and the touch finger experimental assembly after the experiment, for observation of the experimental conditions and convenient replacement or adjustment of the touch finger during the experiment. It is worth noting that when airtightness is required, the installation of each component on the cavity upper cover assembly needs to be sealed to ensure there are no installation gaps.

[0059] In one possible implementation, the cavity lower end cover assembly includes a cavity lower end cover 19, a heater connector 34, a sampling tube connector 35, an observation window 36, and an oil drain port 37.

[0060] The lower end cover 19 of the cavity is fixed to the other end of the cylindrical cavity 20. The heater connector 34, sampling tube connector 35, observation window 36 and oil drain port 37 are all located on the side of the lower end cover 19 away from the cylindrical cavity 20, and the heater connector 34, sampling tube connector 35, observation window 36 and oil drain port 37 are all connected to the internal space of the cylindrical cavity 20.

[0061] In this embodiment, the sampling tube connector 35 is used to fix the sampling tube 28, the observation window 36 is used to observe the experimental phenomena by shining a light source, and the oil outlet 37 is used to discharge the oil sample after the experiment.

[0062] In one possible implementation, the upper component includes a vent valve 1, an oil inlet 2, a pressure relief valve 3, an oil reservoir 4, and an oil reservoir interface 5.

[0063] The oil conservator interface 5 is located at one end of the oil conservator 4, and the vent valve 1, oil inlet 2 and pressure relief valve 3 are all located at the other end of the oil conservator 4. The oil conservator interface 5 passes through the upper end cover 6 of the cavity and connects to the cylindrical cavity 20.

[0064] In this embodiment, the vent valve 1 is used for venting. The oil inlet 2 is used for injecting the oil sample used in the experiment. The pressure relief valve 3 automatically opens when the pressure in the oil chamber is too high to maintain the normal gas pressure in the chamber. The oil conservator 4 is used to maintain the liquid level pressure of the oil in the cylindrical cavity 20. The oil conservator interface 5 is used to seal the gas generated during the experiment and prevent it from overflowing. The vent valve 1, the oil inlet 2, and the pressure relief valve 3 are all connected to the oil conservator 4 by threads.

[0065] In one possible implementation, the finger-touch experimental assembly includes a hanging plate 21, a pressure plate 22, a pressure head 23, a copper ring 25, a copper plate 26, and an XY slide 27.

[0066] The hanging plate 21 is fixed to the upper end cover 6 of the cavity near the cylindrical cavity 20. The pressure plate 22 is fixed to the hanging plate 21. The pressure plate 22 is set as an arc plate, which forms a semi-enclosed space. This semi-enclosed space is used to limit the compression range of the finger 24.

[0067] The connection between the hanging plate 21 and the upper end cover 6 of the cavity is made of insulating material, or the entire hanging plate 21 is made of insulating material, so as to prevent the upper end cover 6 of the cavity from becoming electrified when the finger passes through.

[0068] At least one pressure head mounting groove is provided on the inner surface of the pressure plate 22, and a pressure head 23 is provided in each pressure head mounting groove. The XY slide table 27 is located on the end of the hanging plate 21 away from the upper end cover 6 of the cavity, and the copper plate 26 is located on the execution end of the XY slide table 27. The copper ring 25 is fixed on the copper ring 25, and the contact finger 24 is installed on the copper ring 25.

[0069] In this embodiment, the pressure plate 22 is used to determine the compression range of the contact finger 24 and the placement of the pressure head, the pressure head 23 is used to apply pressure to the contact finger 24, the copper ring 25 is used to install and fix the contact finger 24, the copper plate 26 is used to fix the copper ring 25 and install the XY slide 27, the XY slide 27 is used to rotate the micrometer screw gauge to change its position, thereby changing the positional relationship between the contact finger 24 and the pressure head 23, so as to achieve the alignment and pressing of the contact finger 24 and the pressure head 23.

[0070] In one possible implementation, the heating assembly includes an electric heating element 29, a temperature measuring hole 30, and a heating hole 31.

[0071] The electric heating tube 29 is fixed to the side of the lower end cover 19 of the cavity near the cylindrical cavity 20, the temperature measuring hole 30 is set on the pressure plate 22, and the heating hole 31 is set on the copper ring 25.

[0072] In this embodiment, the electric heating element 29 increases the overall oil sample temperature by passing an electric current through it. The heating hole 31 is located on the copper ring 25 near the finger mounting area and is used to insert a miniature single-head heating element for further heating. The temperature measuring hole 30 is located in the circumferential direction of the pressure plate 22 and is connected to the miniature single-head heating element via a PID temperature controller to achieve temperature control.

[0073] In one possible implementation, a sampling tube 28 is also included, with one end of the sampling tube 28 close to the finger 24 and the other end of the sampling tube 28 connected to the sampling tube connector 35.

[0074] In one possible implementation, the current-carrying assembly includes a power anode hole 32 and a power cathode hole 33.

[0075] The current-carrying electrode 8 includes a cathode and an anode. The power supply anode hole 32 is connected to the anode in the current-carrying electrode 8, and the power supply cathode hole 33 is connected to the cathode in the current-carrying electrode 8. The power supply anode hole 32 is disposed on the pressure plate 22, and the power supply cathode hole 33 is disposed on the copper ring 25.

[0076] The current-passing assembly is used to pass a current source under actual operating conditions through the contact finger 24 to simulate corrosion under operating conditions. The current-passing electrode 8 passes current to the contact finger 24 through the power supply anode hole 32, and then forms a circuit through the power supply cathode hole 33. It is worth noting that when installing the current-passing electrode, insulating material is used for installation to prevent the current-passing electrode 8 from passing through the upper end cover 6 of the cavity.

[0077] The present invention provides a continuous current flow corrosion simulation system for elastic contact fingers. It can use a current source with a similar waveform obtained from the current waveform measured under actual working conditions to continuously flow current through the contact finger via the current flow electrode. By using a pressure sensor and connecting sensors with an aviation plug, experimental data such as pressure, temperature and vibration can be obtained and analyzed.

[0078] This invention utilizes an XY slide to change the position of the pressure head relative to the contact finger, thereby simulating the stress on the contact finger under actual working conditions. Simultaneously, this experimental device uses an electric heater on the lower end cover to raise the oil temperature, simulating the working environment under normal operating conditions of oil-immersed power equipment. A circulating pump simulates the circulation of transformer oil under actual working conditions, obtaining the contact finger corrosion process under actual operating conditions with continuous flow.

[0079] This invention utilizes an XY slide 27 to move the contact finger 24, bringing it into contact with the pressure head 23. This allows the pressure head 23 to apply pressure to the contact finger 24, causing it to elastically deform, simulating the stress on the contact finger 24 under actual working conditions. The overall oil temperature is heated via an electric heating tube 29 on the lower end cover of the cavity. A miniature single-ended heating tube is inserted through a heating hole at the copper ring 25 for further heating of the contact finger. A temperature sensor is inserted through a temperature measuring hole on the pressure plate 22. Combined with the temperature sensor and the miniature single-ended heating tube, the temperature is regulated to meet the experimental temperature requirements. This invention also utilizes a pressure sensor in the upper end cover assembly to obtain the cavity pressure value during the experiment. The oil sample flow is achieved using a circulation valve on the upper end cover. Continuous current flow to the contact finger is achieved by connecting the positive and negative leads fixed to the current-carrying electrode on the upper end cover to the power supply anode and cathode holes on the contact finger experimental assembly. This allows for the acquisition of the sulfur corrosion process and mechanism of the elastic contact finger under different working conditions.

[0080] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A continuous flow corrosion simulation system for elastic finger contacts, characterized in that, It includes a cylindrical cavity, an upper end assembly, a finger-touch testing assembly, a heating assembly, a flow-through assembly, a cavity upper end cover assembly, and a cavity lower end cover assembly; The cylindrical cavity contains an oil sample and is used to construct a simulated environment for finger corrosion. The upper end cap assembly of the cavity is disposed at one end of the cylindrical cavity, and the upper end cap assembly of the cavity is used to install various interfaces, sensors and touch experiment components. The lower end cap assembly of the cavity is disposed at the other end of the cylindrical cavity, and the lower end cap assembly of the cavity is used to seal the other end of the cylindrical cavity and to install the heating assembly. The upper end component is disposed on the side of the upper end cover component of the cavity away from the cylindrical cavity, and the upper end component is used to maintain the liquid level pressure of the oil sample in the cylindrical cavity; The touch finger experimental assembly is disposed inside the cylindrical cavity, and the touch finger experimental assembly is fixed on the side of the upper end cover assembly of the cavity near the cylindrical cavity. The touch finger experimental assembly is used to install the touch finger, apply pressure to the touch finger, and apply current to the touch finger. The heating component is disposed inside the cylindrical cavity and is fixed on the side of the lower end cover assembly of the cavity near the cylindrical cavity. The heating component is used to heat the oil sample inside the cylindrical cavity. The flow-through component is disposed on the finger-touch experimental component, and the flow-through component is used to flow to the finger.

2. The continuous flow corrosion simulation system for elastic finger as described in claim 1, characterized in that, The cylindrical cavity (20) has multiple flange covers on its side, and the included angle between the axes of any two adjacent flange covers is the same.

3. The continuous flow corrosion simulation system for elastic finger as described in claim 2, characterized in that, The plurality of flange covers include a first flange cover (15), a second flange cover (16), a third flange cover (17), and a fourth flange cover (18). The first flange cover (15), the second flange cover (16), the third flange cover (17), and the fourth flange cover (18) are all disposed on the side of the cylindrical cavity (20), and the axes of the first flange cover (15), the second flange cover (16), the third flange cover (17), and the fourth flange cover (18) are all perpendicular to the axis of the cylindrical cavity (20). The axial angle between the first flange cover (15) and the second flange cover (16), the axial angle between the second flange cover (16) and the third flange cover (17), the axial angle between the third flange cover (17) and the fourth flange cover (18), and the axial angle between the fourth flange cover (18) and the first flange cover (15) are all 90°.

4. The continuous flow corrosion simulation system for elastic finger as described in claim 1, characterized in that, The cavity upper end cover assembly includes a cavity upper end cover (6), a cavity safety valve (7), a flow electrode (8), a cavity vent (9), an endoscope port (10), a vacuum aviation plug (11), a pressure sensor (12), a circulation pump port (13), and a lifting ring (14). The upper end cap (6) of the cavity is located at one end of the cylindrical cavity (20). The cavity safety valve (7), flow electrode (8), cavity vent (9), endoscope hole (10), vacuum aviation plug (11), pressure sensor (12), circulation pump port (13) and lifting ring (14) are all located on the side of the upper end cap (6) away from the cylindrical cavity (20). The cavity safety valve (7), flow electrode (8), cavity vent (9), endoscope hole (10), vacuum aviation plug (11), pressure sensor (12) and circulation pump port (13) are all connected to the internal space of the cylindrical cavity (20).

5. The continuous flow corrosion simulation system for elastic finger as described in claim 4, characterized in that, The cavity lower end cover assembly includes a cavity lower end cover (19), a heater connector (34), a sampling tube connector (35), an observation window (36), and an oil drain port (37). The lower end cap (19) of the cavity is fixed to the other end of the cylindrical cavity (20). The heater connector (34), sampling tube connector (35), observation window (36) and oil drain port (37) are all located on the side of the lower end cap (19) away from the cylindrical cavity (20). The heater connector (34), sampling tube connector (35), observation window (36) and oil drain port (37) are all connected to the internal space of the cylindrical cavity (20).

6. The continuous flow corrosion simulation system for elastic finger as described in claim 5, characterized in that, The upper component includes a vent valve (1), an oil inlet (2), a pressure relief valve (3), an oil tank (4), and an oil tank interface (5); The oil reservoir interface (5) is located at one end of the oil reservoir (4), and the vent valve (1), oil inlet (2) and pressure relief valve (3) are all located at the other end of the oil reservoir (4). The oil reservoir interface (5) passes through the upper end cover (6) of the cavity and is connected to the cylindrical cavity (20).

7. The continuous flow corrosion simulation system for elastic finger as described in claim 6, characterized in that, The finger-touch test assembly includes a hanging plate (21), a pressure plate (22), a pressure head (23), a copper ring (25), a copper plate (26), and an XY slide table (27). The hanging plate (21) is fixed to the upper end cover (6) of the cavity near the cylindrical cavity (20), and the pressure plate (22) is fixed on the hanging plate (21). The pressure plate (22) is set as an arc plate, which forms a semi-enclosed space. The semi-enclosed space is used to limit the compression range of the finger (24). The connection between the hanging plate (21) and the upper end cover (6) of the cavity is made of insulating material, or the entire hanging plate (21) is made of insulating material to prevent the upper end cover (6) of the cavity from becoming electrified when the finger passes through; At least one pressure head mounting groove is provided on the inner surface of the pressure plate (22), and a pressure head (23) is provided in each pressure head mounting groove; the XY slide (27) is provided on the end of the hanging plate (21) away from the upper end cover (6) of the cavity, and the copper plate (26) is provided on the execution end of the XY slide (27), the copper ring (25) is fixed on the copper ring (25), and a touch finger (24) is installed on the copper ring (25).

8. The continuous flow corrosion simulation system for elastic finger as described in claim 7, characterized in that, The heating assembly includes an electric heating element (29), a temperature measuring hole (30), and a heating hole (31); The electric heating tube (29) is fixed on the side of the lower end cover (19) of the cavity near the cylindrical cavity (20), the temperature measuring hole (30) is set on the outer surface of the pressure plate (22), and the heating hole (31) is set on the copper ring (25).

9. The continuous flow corrosion simulation system for elastic finger as described in claim 7, characterized in that, It also includes a sampling tube (28), one end of which is close to the finger (24), and the other end of which is connected to a sampling tube connector (35).

10. The continuous flow corrosion simulation system for elastic finger as described in claim 7, characterized in that, The current-passing assembly includes a power anode hole (32) and a power cathode hole (33). The current-passing electrode (8) includes a cathode and an anode. The power supply anode hole (32) is connected to the anode in the current-passing electrode (8), and the power supply cathode hole (33) is connected to the cathode in the current-passing electrode (8). The power anode hole (32) is disposed on the pressure plate (22), and the power cathode hole (33) is disposed on the copper ring (25).

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