Unsteady-state medium corrosion measuring equipment

Abstract

The invention relates to the technical field of corrosion detection equipment, and particularly provides unsteady state medium corrosion measurement equipment, which comprises a test cavity, the test cavity is a hollow cavity, the test cavity is provided with a medium inlet, a medium outlet, a homogenizing plate and an electrode assembly, the electrode assembly comprises a reference electrode, a counter electrode and a working electrode, the reference electrode, the counter electrode and the working electrode are all connected to a control and data processing mechanism, and a test medium enters the test cavity through the medium inlet, firstly flows through the homogenizing plate and then flows through the control and data processing mechanism. The medium flows through a workpiece positioned in the testing cavity and then is discharged from the medium outlet; the feeding pump is used for continuously introducing a test medium into the test cavity; according to the invention, the working environment of the workpiece can be accurately simulated, and the accuracy of the corrosion resistance test is improved.

Description

Technical Field

[0001] This invention relates to the field of corrosion detection equipment technology, and in particular to a corrosion measurement device for unsteady media. Background Technology

[0002] Metallic materials are susceptible to environmental corrosion during service, which can lead to fracture failure. During electrochemical corrosion of metallic materials, the electrochemical potential at the interface between the metal and the environment is an effective parameter for evaluating corrosion behavior and can be used to analyze the driving force of electrochemical reactions in real time.

[0003] Currently, electrochemical testing environments for metal corrosion primarily utilize steady-state media. During metal corrosion, the environment of the steady-state medium and the electrochemical reaction between the metal and the corrosive medium changes as corrosion progresses, further influencing the electrochemical reaction. However, many metallic materials in real-world environments are typically in unstable media environments. The electrochemical reaction between the unstable medium and the metal is mainly affected by the unstable media environment, which is also a significant factor influencing metal corrosion. Accurate measurement of metal corrosion resistance is difficult in steady-state media environments. Therefore, this application proposes an unstable-state media corrosion measurement device. Summary of the Invention

[0004] The purpose of this invention is to provide a non-steady-state medium corrosion measurement device to solve the problem that current devices are out of touch with the metal application environment, making it difficult to accurately measure the corrosion resistance of metals.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An unsteady-state medium corrosion measuring device includes: a test chamber, which is a hollow cavity; a medium inlet, a medium outlet, a homogenizing plate, and an electrode assembly provided on the test chamber; the electrode assembly includes a reference electrode, a counter electrode, and a working electrode; the reference electrode, the counter electrode, and the working electrode are all connected to a control and data processing mechanism; the test medium enters the test chamber through the medium inlet, first flows through the homogenizing plate, then flows through the workpiece located in the test chamber, and finally exits from the medium outlet; A feed pump is used to continuously introduce the test medium into the test chamber.

[0006] Furthermore, the test chamber includes: The outer shell and the inner cavity are both cylindrical with an opening at one end. The outer shell is fitted over the outside of the inner cavity. The outer shell and the inner cavity are concentrically arranged. The inner diameter of the outer shell is larger than the outer diameter of the inner cavity. The inner cavity is suspended inside the outer shell. The homogenizing plate is located near the bottom of the inner cavity, the medium outlet is located at the bottom of the outer shell, and the medium inlet is located between the homogenizing plate and the bottom of the inner cavity. A top cover is fixedly connected to the opening of the outer casing, and the electrode assembly is fixedly connected to the top cover.

[0007] Furthermore, the outer shell has a conical bottom, and the medium outlet is located at the middle of the bottom of the inner cavity.

[0008] Furthermore, a bottom support column is provided between the bottom of the inner cavity and the bottom of the outer shell. The bottom support column is evenly fixed to the bottom of the inner cavity. An end limiting block is provided at the edge of the opening of the inner cavity. The end limiting blocks are evenly distributed around the axis of the inner cavity in the circumferential direction. The end limiting blocks are located between the outer wall of the inner cavity and the inner wall of the outer shell.

[0009] Furthermore, the working electrode includes an Ag wire with an AgCl coating, silica gel, a saturated KCl solution, and a capillary tube. The saturated KCl solution and part of the Ag wire with the AgCl coating are located inside the capillary tube, while another part of the Ag wire with the AgCl coating passes through the silica gel and is located outside the capillary tube. The silica gel is disposed at the opening of the capillary tube.

[0010] Furthermore, the measuring device also includes: The liquid storage chamber is connected to the medium outlet via a hose. The pumping end of the feed pump is connected to the liquid storage chamber. The feed pump draws the test medium from the liquid storage chamber and sends it into the test chamber.

[0011] Furthermore, the measuring device also includes: A cooling component and a heating component, wherein the cooling component and the heating component are used to control the temperature of the test medium inside the liquid storage chamber; A temperature sensor is used to test the temperature of the medium inside the liquid storage chamber; A control and data processing mechanism is electrically connected to the temperature sensor, the cooling component, and the heating component to adjust the temperature of the test medium inside the liquid storage chamber.

[0012] Furthermore, the control and data processing mechanism is also equipped with a flow sensor between the feed pump and the test chamber.

[0013] Furthermore, the control and data processing mechanism is also equipped with a concentration sensor in the liquid storage chamber for detecting the concentration of the test medium in the liquid storage chamber.

[0014] Furthermore, a filter is provided between the feed pump and the test chamber to filter impurities in the test medium.

[0015] Beneficial effects: By controlling the continuous flow of the test medium within the test chamber, a continuously flowing fluid environment is created, thereby more accurately simulating the working environment of the workpiece and improving the accuracy of corrosion resistance testing. Attached Figure Description

[0016] Figure 1 for Figure 1 This is a schematic diagram of the structure of an unsteady-state medium corrosion measurement device disclosed in an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the flow direction of the test solution in an unsteady-state medium corrosion measurement device disclosed in an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the overall structure of the test chamber in an unsteady medium corrosion measurement device disclosed in an embodiment of the present invention.

[0019] Figure 4 This is a perspective view of the test chamber in an unsteady medium corrosion measurement device disclosed in an embodiment of the present invention.

[0020] Figure 5 This is a front view of the test chamber in an unsteady-state medium corrosion measurement device disclosed in an embodiment of the present invention.

[0021] Figure 6 for Figure 5 Sectional view of AA.

[0022] Figure 7 This is a schematic diagram of the mixing cylinder in an unsteady-state medium corrosion measuring device disclosed in an embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the working electrode in an unsteady-state medium corrosion measurement device disclosed in an embodiment of the present invention.

[0024] Figure label: 100. Workbench; 200. Test chamber; 210. Outer shell; 211. Conical bottom; 212. Medium outlet; 213. Support component; 220. Inner cavity; 221. Medium inlet; 222. Bottom support column; 223. End limiting block; 230. Homogenization plate; 231. Homogenization hole; 240. Top cover; 250. Electrode assembly; 251. Reference electrode; 252. Counter electrode; 253. Working electrode; 254. Ag wire; 255. Silica gel; 256. Saturated KCl solution 257. Capillary hose; 300. Feed pump; 400. Mixing mechanism; 410. Mixing cylinder; 411. Mixing feed pipe; 412. Concentrated solution feed pipe; 413. Mixing discharge pipe; 420. Mixing pump; 430. Concentrated solution storage tank; 500. Filter; 600. Liquid storage chamber; 610. Refrigeration component; 620. Heating component; 700. Control and data processing mechanism; 710. Flow sensor; 720. Temperature sensor; 730. Concentration sensor; 800. Filter. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a corrosion measuring device for an unsteady medium (specifically, a solution), the measuring device comprising: The test chamber 200 is a hollow cavity. The test chamber 200 is provided with a medium inlet 221, a medium outlet 212, a homogenization plate 230, and an electrode assembly 250. The electrode assembly 250 includes a reference electrode 251, a counter electrode 252, and a working electrode 253. The reference electrode 251, the counter electrode 252, and the working electrode 253 are all connected to a control and data processing mechanism 700. The test solution enters the test chamber 200 through the medium inlet 221, first flows through the homogenization plate 230, then flows through the workpiece located in the test chamber 200, and finally exits from the medium outlet 212. The feed pump 300 is used to continuously introduce the test solution into the test chamber 200.

[0027] In this embodiment, during the metal corrosion test, the workpiece is fixed inside the test chamber 200, and the test solution is continuously pumped into the test chamber 200 by the feed pump 300. The test solution flows within the test chamber 200 and flows uniformly over the workpiece after entering the test chamber 200. The working electrode 253 is in contact with the workpiece, while the reference electrode 251 and the counter electrode 252 are not in contact with the workpiece. The control and data processing mechanism 700 is electrically connected to the reference electrode 251, the counter electrode 252, and the working electrode 253 to obtain the potential difference. Because the test solution in the test chamber 200 is continuously flowing, during the corrosion process of the workpiece, the corrosion products are carried away, and the corrosion environment of the workpiece is fluid, simulating the actual application environment of the workpiece and improving the accuracy of the workpiece corrosion resistance test.

[0028] The non-steady-state medium corrosion measurement device disclosed in this invention creates a continuously flowing fluid environment by controlling the continuous flow of the test solution in the test chamber 200, thereby more accurately simulating the working environment of the workpiece and improving the accuracy of corrosion resistance testing.

[0029] Specifically, in this embodiment, the test chamber 200 is a cylindrical structure, and the medium inlet 221 and the medium outlet 212 are fixedly connected to the test chamber 200 by welding. The feed pump 300 and the medium inlet 221 are connected by a flexible tube (such as a silicone flexible tube).

[0030] In this embodiment, the homogenization plate 230 is a circular plate structure, and homogenization holes 231 are evenly distributed on the homogenization plate 230.

[0031] As a preferred embodiment of this example, Figures 3 to 6As shown, the test chamber 200 includes an outer shell 210, an inner cavity 220, and a top cover 240. Both the outer shell 210 and the inner cavity 220 are cylindrical with an opening at one end. The outer shell 210 is fitted over the outer side of the inner cavity 220. The outer shell 210 and the inner cavity 220 are concentrically arranged. The inner diameter of the outer shell 210 is larger than the outer diameter of the inner cavity 220. The inner cavity 220 is suspended inside the outer shell 210. The homogenizing plate 230 is located near the bottom of the inner cavity 220. The medium outlet 212 is located at the bottom of the outer shell 210. The medium inlet 221 is located between the homogenizing plate 230 and the bottom of the inner cavity 220. The top cover 240 is fixedly connected to the opening of the outer shell 210. The electrode assembly 250 is fixedly connected to the top cover 240 and enters the inner cavity. Under the influence of gravity, the test solution inside the inner cavity 220 is evenly distributed to the bottom of the inner cavity 220, and its liquid level rises evenly. Then, it overflows from the end of the inner cavity 220 into the gap between the outer shell 210 and the inner cavity 220, and is discharged from the medium outlet 212 at the bottom of the outer shell 210. When the inner cavity 220 is filled with test solution, the homogenizing plate 230 homogenizes the test solution entering from the inner cavity 220, so that the test solution flows evenly in the inner cavity 220. Since liquids always flow in the direction of easiest flow, the inner cavity 220 has a cylindrical structure, and the test solution rises vertically in the inner cavity 220. Under the influence of gravity, the test solution rises evenly in the inner cavity 220, so that the liquid in all parts of the inner cavity 220 is in a flowing state, and the liquid flow speed at the same height is the same.

[0032] Preferably, a bottom support column 222 is provided between the bottom of the inner cavity 220 and the bottom of the outer shell 210. The bottom support column 222 is evenly fixed to the bottom of the inner cavity 220. The bottom support column 222 and the inner cavity 220 are fixedly connected by adhesive. An end limiting block 223 is provided at the edge of the opening of the inner cavity 220. The end limiting blocks 223 are evenly distributed around the axis of the inner cavity 220 in the circumferential direction. The end limiting blocks 223 are located between the outer wall of the inner cavity 220 and the inner wall of the outer shell 210. The end limiting blocks 223 are fixedly connected to the inner cavity 220 by adhesive or welding.

[0033] In a preferred embodiment of this invention, the bottom of the outer shell 210 is provided with a conical bottom 211, and the medium outlet 212 is located at the middle position of the bottom of the inner cavity 220. The test solution flowing into the interior of the outer shell 210 enters the bottom of the inner cavity 220 and exits from the medium outlet 212. A support member 213 is provided on the conical bottom 211. The support member 213 is a support foot structure or a cylindrical mechanism. The support member 213 is fixedly connected to the outer side of the bottom of the outer shell 210 by adhesive bonding.

[0034] Both the outer shell 210 and the inner cavity 220 are made of polytetrafluoroethylene (PTFE). The outer shell 210 and the inner cavity 220 are made of insulating and electrochemically corrosion-resistant materials to avoid electrochemical effects with the test solution that could affect the corrosion resistance measurement results.

[0035] Preferably, the top cover 240 has a disc-shaped structure and a retaining ring structure. The top cover 240 is detachably fixed to the opening of the outer shell 210 by an interference fit. The reference electrode 251, the counter electrode 252, and the working electrode 253 are all fixed to the top cover 240 by an interference fit. The reference electrode 251 and the counter electrode 252 are existing technologies.

[0036] As a preferred embodiment of this example, Figure 8 As shown, the working electrode 253 is a microelectrode. In this embodiment, the working electrode 253 includes an Ag wire 254 with an AgCl coating, a silica gel 255, a saturated KCl solution 256, and a capillary tube 257. The saturated KCl solution 254 and part of the Ag wire 254 with the AgCl coating are located inside the capillary tube 257, while another part of the Ag wire 254 with the AgCl coating passes through the silica gel 255 and is located outside the capillary tube 257. The silica gel 255 is disposed at the opening of the capillary tube 257 to seal the opening of the capillary tube 257.

[0037] Specifically, the diameter of the AgCl coated Ag wire 254 is 100-400 μm. The AgCl coated Ag wire 254 can be 100 μm, 200 μm, 300 μm or 400 μm. At this size, the AgCl coating on the Ag / AgCl electrode surface is uniformly distributed and the electrochemical performance is stable.

[0038] Specifically, the outer diameter of the capillary tube 257 is 0.3 to 0.8 mm, and the tip of the capillary tube 257 has a hole. The outer diameter of the capillary tube 257 can be 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm or 0.8 mm.

[0039] The 300 is a peristaltic pump, which is electrically connected to the 700, and the 700 controls the operation of the 300.

[0040] The measuring liquid is an HCl solution, and the concentration of the HCl solution can be 0.01 mol / L, 0.05 mol / L, 0.1 mol / L, 0.2 mol / L, 0.3 mol / L, 0.4 mol / L, 0.5 mol / L, 0.6 mol / L, 0.7 mol / L, or 0.8 mol / L.

[0041] The control and data processing mechanism 700 is existing technology. The control and data processing mechanism 700 includes a microprocessor, a power supply mechanism, and a data acquisition and processing system. The microprocessor is used to control the operation of the feed pump 300, and the data acquisition and processing system is used to measure the potential of the electrode assembly 250 to measure the corrosion resistance of the workpiece.

[0042] In a preferred embodiment of this invention, the measuring device further includes a liquid storage chamber 600, which is connected to the medium outlet 212 via a hose. The pumping end of the feed pump 300 is connected to the liquid storage chamber 600, and the feed pump 300 draws the test solution from the liquid storage chamber 600 and sends it into the test chamber 200.

[0043] In this embodiment, the liquid storage chamber 600 is a can-shaped structure made of polytetrafluoroethylene, and the liquid storage chamber 600 is connected to the medium outlet 212 and the feed pump 300 through a flexible hose.

[0044] In a preferred embodiment of this invention, a cooling component 610 and a heating component 620 are further provided within the liquid storage chamber 600. The cooling component 610 is a cooling plate structure, with its cold end attached to the liquid storage chamber 600. The cold end of the cooling component 610 contacts the test solution within the liquid storage chamber 600 via heat-conducting fins. The cooling component 610 and the liquid storage chamber 600 are sealed together by adhesive bonding. The heating component 620 is a ceramic heating rod disposed within the liquid storage chamber 600 for heating the liquid within the liquid storage chamber 600. The test solution is provided in the storage chamber 600. The cooling component 610 and the heating component 620 are electrically connected to the control and data processing mechanism 700. The control and data processing mechanism 700 controls the start and stop of the cooling component 610 and the heating component 620 to control the temperature of the test solution in the storage chamber 600. The control and data processing mechanism 700 is provided with a temperature sensor 720 in the storage chamber 600. The control and data processing mechanism 700 controls the test solution inside the storage chamber 600 to maintain it within a preset temperature range based on the detection result of the temperature sensor 720.

[0045] In a preferred embodiment of this invention, a filter 800 is provided between the feed pump 300 and the test chamber 200 to filter impurities in the test solution. The filter membrane in the filter 800 has a pore size of 0.22 μm and a filtration area of ​​10 cm². The filter 800, the feed pump 300, and the inner cavity 220 are connected by a flexible hose.

[0046] In a preferred embodiment of this invention, the control and data processing mechanism 700 is further provided with a flow sensor 710 between the feed pump 300 and the test chamber 200 for detecting the flow rate of the feed pump 300. The control and data processing mechanism 700 controls the operation of the feed pump 300 based on the detection result of the flow sensor 710.

[0047] In a preferred embodiment of this invention, the control and data processing mechanism 700 is further provided with a concentration sensor 730 in the liquid storage chamber 600 for detecting the concentration of the test solution in the liquid storage chamber 600. When the control and data processing mechanism 700 detects that the concentration of the test solution is lower than a preset value, the control and data processing mechanism 700 issues an early warning through an early warning device. The early warning device has a photoacoustic warning structure. The concentration sensor 730 can be a pH sensor, which calculates the concentration of hydrochloric acid by detecting and measuring the acidity or alkalinity of the solution.

[0048] Preferably, in this embodiment, such as Figure 1 and Figure 7 As shown, the measuring device further includes: A mixing mechanism 400 is used to control the concentration of the test solution entering the test chamber 200. The mixing mechanism 400 includes a mixing cylinder 410, a mixing pump 420, and a concentrated solution storage tank 430. The mixing cylinder 410 is connected between the flow sensor 710 and the test chamber 200. The test solution flowing out of the concentration sensor 730 first enters the mixing cylinder 410 and then enters the test chamber 200. The mixing cylinder 410 is a hollow cylindrical cavity structure. A mixing inlet pipe 411, a concentrated solution inlet pipe 412, and a mixing outlet pipe 41 are provided on the mixing cylinder 410. 3. The mixing feed pipe 411 is fixedly connected to the bottom edge of the mixing cylinder 410 in a tangential manner. The concentrated solution feed pipe 412 is located at the outlet of the mixing feed pipe 411 inside the mixing cylinder 410. The mixing discharge pipe 413 is located at the center of the bottom of the mixing cylinder 410. The position of the mixing discharge pipe 413 inside the mixing cylinder 410 is coaxial with the mixing cylinder 410. The test solution entering the mixing cylinder 410 rises in a rotating manner and then enters the mixing discharge pipe 413. The mixing discharge pipe 413 penetrates the bottom of the mixing cylinder 410.

[0049] The concentrated solution storage tank 430 is connected to the mixing pump 420. The concentrated solution storage tank 430 stores a test solution of a preset concentration. The mixing pump 420 is a prior art technology. The mixing pump 420 draws the high-concentration test solution from the concentrated solution storage tank 430 and injects it into the mixing cylinder 410. The high-concentration test solution mixes with the test solution pumped in by the feed pump 300, thereby increasing the concentration of the test solution. The mixing pump 420 is a peristaltic pump. The structure of the concentrated solution storage tank 430 is the same as that of the liquid storage chamber 600. The measuring device includes a workbench 100, which is a hollow cavity. The concentrated solution storage tank 430 and the liquid storage chamber 600 are disposed inside the workbench 100.

[0050] In this invention, the test solution is controlled to flow uniformly through the test workpiece by overflow, and the flow rate is controlled by flow rate control. The test solution overflows from the inner cavity to the outer shell, and the test solution entering the inner cavity flows uniformly within the inner cavity, ensuring uniform contact between the workpiece and the test solution, which is more in line with actual application environments. The mixing degree of low-concentration and high-concentration solutions in the mixing tank is improved by overflow and cyclone rotation. The test solution entering the mixing cylinder rises in a rotating manner and enters the mixing discharge pipe. The low-concentration and high-concentration solutions slowly overflow into the mixing discharge pipe in the mixing cylinder and rise in a rotating manner within the mixing cylinder, resulting in uniform mixing of the low-concentration and high-concentration solutions within the mixing cylinder, thus improving the uniformity of HCl distribution in the test solution.

[0051] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0052] It should be understood that although the terms first, second, third, etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of this invention, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-steady-state medium corrosion measurement device, characterized in that, The measuring device includes: The test chamber is a hollow cavity. The test chamber is provided with a medium inlet, a medium outlet, a homogenization plate, and an electrode assembly. The electrode assembly includes a reference electrode, a counter electrode, and a working electrode. The reference electrode, the counter electrode, and the working electrode are all connected to a control and data processing mechanism. The test medium enters the test chamber through the medium inlet, first flows through the homogenization plate, then flows through the workpiece located in the test chamber, and finally exits from the medium outlet. A feed pump is used to continuously introduce the test medium into the test chamber.

2. The non-steady-state medium corrosion measuring device according to claim 1, characterized in that, The test chamber includes: The outer shell and the inner cavity are both cylindrical with an opening at one end. The outer shell is fitted over the outside of the inner cavity. The outer shell and the inner cavity are concentrically arranged. The inner diameter of the outer shell is larger than the outer diameter of the inner cavity. The inner cavity is suspended inside the outer shell. The homogenizing plate is located near the bottom of the inner cavity, the medium outlet is located at the bottom of the outer shell, and the medium inlet is located between the homogenizing plate and the bottom of the inner cavity. A top cover is fixedly connected to the opening of the outer casing, and the electrode assembly is fixedly connected to the top cover.

3. The non-steady-state medium corrosion measuring device according to claim 2, characterized in that, The outer shell has a conical bottom, and the medium outlet is located at the middle of the bottom of the inner cavity.

4. The non-steady-state medium corrosion measuring device according to claim 2, characterized in that, A bottom support column is provided between the bottom of the inner cavity and the bottom of the outer shell. The bottom support column is evenly fixed to the bottom of the inner cavity. An end limiting block is provided at the edge of the opening of the inner cavity. The end limiting blocks are evenly distributed around the axis of the inner cavity in the circumferential direction. The end limiting blocks are located between the outer wall of the inner cavity and the inner wall of the outer shell.

5. The non-steady-state medium corrosion measuring device according to claim 1, characterized in that, The working electrode includes: Ag wire with AgCl coating; silicone; Saturated KCl solution; A capillary tube, a saturated KCl solution, and a portion of the AgCl-coated Ag filaments are located inside the capillary tube, while another portion of the AgCl-coated Ag filaments pass through a silicone sealant located outside the capillary tube. The silicone sealant is positioned at the opening of the capillary tube.

6. A non-steady-state medium corrosion measuring device according to any one of claims 1-5, characterized in that, The measuring device also includes: The liquid storage chamber is connected to the medium outlet via a hose. The pumping end of the feed pump is connected to the liquid storage chamber. The feed pump draws the test medium from the liquid storage chamber and sends it into the test chamber.

7. The non-steady-state medium corrosion measuring device according to claim 6, characterized in that, The measuring device also includes: A cooling component and a heating component, wherein the cooling component and the heating component are used to control the temperature of the test medium inside the liquid storage chamber; A temperature sensor is used to test the temperature of the medium inside the liquid storage chamber; A control and data processing mechanism is electrically connected to the temperature sensor, the cooling component, and the heating component to adjust the temperature of the test medium inside the liquid storage chamber.

8. The non-steady-state medium corrosion measuring device according to claim 7, characterized in that, The control and data processing mechanism also includes a flow sensor between the feed pump and the test chamber.

9. The non-steady-state medium corrosion measuring device according to claim 7, characterized in that, The control and data processing mechanism is also equipped with a concentration sensor in the liquid storage chamber to detect the concentration of the test medium in the liquid storage chamber.

10. A non-steady-state medium corrosion measuring device according to any one of claims 1-5, characterized in that, A filter is also provided between the feed pump and the test chamber to filter impurities in the test medium.

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