A carrier and pipeline assembly for electrochemical test

Abstract

The present invention discloses a carrier for electrochemical tests, including a carrier sleeve, a plug sleeve and a three-electrode test probe, the lower end of the carrier sleeve is sealed and welded with a test pipeline, three connecting rods are cast in a triangular shape in the plug sleeve through a first insulating filler, the upper and lower ends of the connecting rods are extended from the first insulating filler, the upper end of the connecting rod also serves as a plug, the three-electrode test probe is respectively connected to the lower ends of the three connecting rods through wires, the plug sleeve and the three-electrode test probe are inserted into the carrier sleeve from top to bottom, the three-electrode test probe is in contact with the fluid in the test pipeline, the lower half of the plug sleeve is sealed and plugged into the upper half of the carrier sleeve, the plug sleeve is pressed against the carrier sleeve through a pressure cap, and the upper half of the plug sleeve extends from the pressure cap. The present invention has good sealing and durability, as well as safety and stability during use, can adapt to high temperature and high pressure electrochemical tests, and also has the advantages of convenient disassembly and installation.

Description

Technical Field

[0001] The present invention relates to the technical field of electrochemical testing, and more specifically, to a carrier for electrochemical testing. Background Art

[0002] In electrochemical experiments, the carrier is the core experimental equipment, and its performance is closely related to the experimental results. With the rapid development of science and technology, the design and manufacturing process of the carrier have been significantly improved, laying a solid foundation for the progress of electrochemical experiments.

[0003] In recent years, electrochemical test carriers have made great progress in material selection, function and performance. New carrier materials continue to emerge, such as polymer materials and ceramic materials, providing more options for experiments. In terms of function, modern electrochemical test carriers not only pursue higher durability and stability, but also focus on reducing experimental errors and improving experimental efficiency.

[0004] Although the development of electrochemical test carriers has achieved remarkable results, it still faces many challenges. First of all, how to further improve the stability of the carrier is a major problem. In practical applications, the carrier needs to withstand long-term harsh environments such as high temperature and high pressure. Secondly, how to design a carrier structure that is more in line with actual working conditions is also an urgent problem to be solved. According to different experimental requirements, the design of the carrier must fully consider its functionality, durability and ease of use. Summary of the invention

[0005] In order to solve the technical problems existing in the background technology, the present invention innovatively provides a carrier for electrochemical tests, which has excellent sealing and durability, as well as safety and stability during use, can adapt to high temperature and high pressure electrochemical tests, and also has the advantages of easy disassembly and installation.

[0006] To achieve the above-mentioned technical objectives, an embodiment of the present invention discloses a carrier for electrochemical tests, comprising a carrier sleeve, a plug-in sleeve and a three-electrode test probe, the lower end of the carrier sleeve is sealed and welded to the test pipe, three connecting rods are arranged in the plug-in sleeve, the three connecting rods are cast in the plug-in sleeve in a triangular shape through a first insulating filler, the upper and lower ends of the connecting rods both extend out of the first insulating filler, the upper end of the connecting rod also serves as a plug, the three-electrode test probe is respectively connected to the lower ends of the three connecting rods through wires, the plug-in sleeve and the three-electrode test probe are inserted into the carrier sleeve from top to bottom, the three-electrode test probe is in contact with the fluid in the test pipe, the lower half of the plug-in sleeve is sealed and plugged into the upper half of the carrier sleeve, the plug-in sleeve is pressed against the carrier sleeve through a pressure cap, and the upper half of the plug-in sleeve extends out of the pressure cap.

[0007] Furthermore, the present invention provides a carrier for electrochemical tests, wherein the three-electrode test probe comprises a shell, a reference electrode, a test electrode and an auxiliary electrode, the reference electrode, the test electrode and the auxiliary electrode are vertically cast as a whole in the shell through a second insulating filler, the upper ends of the reference electrode, the test electrode and the auxiliary electrode are connected to the wires, the wires pass through the shell and are connected to corresponding connecting rods, and the lower ends of the reference electrode, the test electrode and the auxiliary electrode are in contact with the fluid in the test pipe.

[0008] Furthermore, the present invention provides a carrier for electrochemical testing, wherein a retaining ring is provided at the lower end of the inner peripheral wall of the carrier sleeve, and the lower end surface of the shell of the three-electrode test probe abuts against the upper end surface of the retaining ring.

[0009] Furthermore, the present invention provides a carrier for electrochemical tests, wherein the plug-in sleeve is provided with an upper plastic pad sleeved on the lower side of the upper ends of the three connecting rods, and the plug-in sleeve is provided with a lower plastic pad sleeved on the upper side of the lower ends of the three connecting rods, and the upper plastic plate and the lower plastic pad are both interference fit with the inner circumferential wall of the plug-in sleeve.

[0010] Furthermore, the present invention provides a carrier for electrochemical tests, wherein the lower end of the connecting rod is provided with a plug-in hole along its own axial direction, the upper half of the plug-in hole cross-section is rectangular, and the lower half of the plug-in hole cross-section is trapezoidal, and the core of the wire is tightened in the upper half of the plug-in hole through the lower half of the plug-in hole.

[0011] Furthermore, the present invention provides a carrier for an electrochemical test, wherein the lower end of the carrier sleeve is formed by a first columnar portion, a second columnar portion and a conical portion connected in sequence from bottom to top, the outer diameter of the first columnar portion is smaller than the outer diameter of the second columnar portion, the outer diameter of the conical portion gradually increases from bottom to top and is finally connected to the outer peripheral wall of the carrier sleeve, and when the carrier sleeve is sealed and welded to the test pipe, the solder covers the first columnar portion, the second columnar portion and the conical portion.

[0012] Furthermore, the present invention provides a carrier for electrochemical testing, wherein the lower end surface of the first columnar portion is tangent to the inner circumferential wall of the test pipe.

[0013] Furthermore, the present invention provides a carrier for an electrochemical test, wherein the upper half of the carrier sleeve is provided with an internal thread, and the inner diameter of the upper half of the carrier sleeve is larger than the inner diameter of the lower half, the plug-in sleeve is thick in the middle and thin at both ends, and the lower half of the plug-in sleeve is inserted into the lower half of the carrier sleeve, and the middle lower end surface of the plug-in sleeve abuts against the step surface formed in the carrier sleeve, the pressure cap is sleeved on the plug-in sleeve, and the outer peripheral wall of the pressure cap is provided with an external thread, the pressure cap is threadedly connected to the internal thread of the carrier sleeve via the external thread, and the lower end surface of the pressure cap abuts against the middle upper end surface of the plug-in sleeve.

[0014] Furthermore, the present invention provides a carrier for electrochemical testing, wherein a sealing groove is provided in the middle of the plug sleeve, a sealing ring is sleeved in the sealing groove, and the sealing ring is interference fit with the inner peripheral wall of the carrier sleeve.

[0015] The embodiment of the present invention also provides a pipeline assembly for electrochemical testing, including a test pipeline, characterized in that: a carrier is symmetrically installed on the upper and lower sides of the middle part of the test pipeline, the carrier includes a carrier sleeve, a plug sleeve and a three-electrode test probe, the lower end of the carrier sleeve is sealed and welded to the test pipeline, three connecting rods are arranged in the plug sleeve, the three connecting rods are cast in the plug sleeve in a triangular shape through a first insulating filler, the upper and lower ends of the connecting rods both extend from the first insulating filler, the upper end of the connecting rod also serves as a plug, the three-electrode test probe is respectively connected to the lower ends of the three connecting rods through wires, the plug sleeve and the three-electrode test probe are inserted into the carrier sleeve from top to bottom, the three-electrode test probe is in contact with the fluid in the test pipeline, and the lower half of the plug sleeve is sealed. Inserted in the upper half of the bearing sleeve, the plug-in sleeve is pressed against the bearing sleeve through a pressure cap, and the upper half of the plug-in sleeve extends out of the pressure cap. The first ball valve and the second ball valve are respectively installed at both ends of the test pipe. The corrosion test probes are symmetrically mounted on the upper and lower sides of the test pipe between the carrier and the first ball valve. A pressure gauge and an exhaust valve are also installed on the upper side of the test pipe. The pressure gauge is installed between the corrosion test probe located on the upper side of the test pipe and the carrier. The exhaust valve is installed between the carrier located on the upper side of the test pipe and the second ball valve. A temperature sensor and a liquid extraction valve are also installed on the lower side of the test pipe. The temperature sensor is installed between the corrosion test probe located on the lower side of the test pipe and the carrier. The liquid extraction valve is installed between the carrier located on the lower side of the test pipe and the second ball valve.

[0016] The difference between the present invention and the prior art is that the carrier of the present invention includes a bearing sleeve, a plug sleeve and a three-electrode test probe. The lower end of the bearing sleeve is sealed and welded with the test pipe to ensure its stability. Three connecting rods are arranged inside the plug sleeve, and the three connecting rods are cast in the plug sleeve through the first insulating filler and form a triangular distribution. The upper and lower ends of each connecting rod extend from the first insulating filler, and the upper end of the connecting rod is also used as a plug for connecting the electrochemical workstation to perform electrochemical tests. The three-electrode test probe is connected to the lower ends of the three connecting rods through wires in a one-to-one correspondence to ensure the accuracy and stability of signal transmission. The plug sleeve and the three-electrode test probe are inserted into the bearing sleeve in order from top to bottom. When it is fully inserted, the three-electrode test probe contacts the fluid in the test pipe for accurate measurement. Structurally, the lower half of the plug sleeve is sealed and plugged with the upper half of the bearing sleeve, and this sealed plugging method enhances the sealing and durability of the equipment. At the same time, the plug sleeve is tightly pressed against the bearing sleeve through the pressure cap, and the upper half of the plug sleeve can be extended from the pressure cap, ensuring the stability and safety of the bearing during use, and also providing convenience for the installation and removal of the bearing. Through the above settings, the bearing can adapt to electrochemical experiments related to high temperature and high pressure multiphase flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a carrier for electrochemical testing of the present invention;

[0018] Figure 2 A schematic diagram of a top view of a carrier for electrochemical testing according to the present invention;

[0019] Figure 3 for Figure 1 A partial enlarged schematic diagram of the middle A part;

[0020] Figure 4 for Figure 1 A partial enlarged schematic diagram of the middle B part;

[0021] Figure 5 This is a schematic structural diagram of a pipeline assembly for an electrochemical test according to the present invention. DETAILED DESCRIPTION

[0022] The following is a detailed explanation and description of a carrier for an electrochemical test of the present invention in conjunction with the accompanying drawings.

[0023] like Figure 1 Combined with Figure 2As shown, an embodiment of the present invention discloses a carrier for electrochemical tests, which mainly includes a carrier sleeve 1, a plug sleeve 2 and a three-electrode test probe 3. The carrier sleeve 1 is the main part of the device, and its lower end is sealed and welded with the test pipe 5 to ensure the stable connection between the carrier and the test pipe 5. This welding process not only improves the stability of the equipment, but also enhances its sealing performance, providing a good foundation for subsequent electrochemical tests. Three connecting rods 21 are provided inside the plug sleeve 2, and these three connecting rods 21 are cast in the plug sleeve 2 through the first insulating filler 22, forming a stable triangular distribution between the three. The upper and lower ends of each connecting rod 21 extend from the insulating filler, and the upper end of the connecting rod 21 is also used as a plug, which can be conveniently connected to the electrochemical workstation for electrochemical tests. This design not only simplifies the test operation, but also improves the accuracy and stability of signal transmission. The three-electrode test probe 3 is connected to the lower ends of the three connecting rods 21 one by one through the wire 4. That is to say, the three-electrode test probe 3 is detachably connected to the plug sleeve 2, and can be replaced with a different three-electrode test probe 3 according to actual needs. During the test, the three-electrode test probe 3 can accurately measure the electrochemical parameters of the fluid in the pipeline, providing a reliable basis for subsequent data analysis. When in use, the plug sleeve 2 and the three-electrode test probe 3 are inserted into the bearing sleeve 1 in order from top to bottom. This design makes the equipment more convenient and quick during installation and removal. When it is fully inserted, the three-electrode test probe 3 contacts the fluid in the test pipeline 5 for accurate measurement. This contact method not only improves the accuracy of the measurement, but also enhances the durability of the equipment, so that it can adapt to electrochemical tests in various complex environments. In terms of structure, the lower half of the plug sleeve 2 is sealed and plugged with the upper half of the bearing sleeve 1, and this sealed plug-in method further enhances the sealing and durability of the equipment. At the same time, the plug sleeve 2 is tightly pressed against the bearing sleeve 1 through the pressure cap 6, and the upper half of the plug sleeve 2 can extend from the pressure cap 6 to ensure the stability and safety of the carrier 10 during use. This design also facilitates the installation and removal of the carrier 10, so that the carrier 10 can adapt to electrochemical tests related to high temperature and high pressure multiphase flow. It can still maintain good performance and stability during long-term use, further improving the accuracy and reliability of electrochemical tests, and the measured experimental data can provide useful reference and help for scientific researchers and technicians in related fields.

[0024] In one embodiment of the present invention, the three-electrode test probe 3 is composed of a shell 31, a reference electrode, a test electrode and an auxiliary electrode. These electrodes are integrally cast in the shell 31 through a second insulating filler 32 to ensure the stability of the structure and the accuracy of the experiment. Among them, the upper ends of the reference electrode, the test electrode and the auxiliary electrode are all connected with wires 4, which pass through the shell 31 and are connected to the corresponding connecting rods 21, thereby ensuring the stable transmission of current. At the same time, the lower ends of these electrodes are in direct contact with the fluid in the test pipe 5, providing an accurate electrochemical environment for the experiment. The auxiliary electrode, also known as the counter electrode, plays a key role in the experiment. It forms a series circuit with the test electrode and mainly plays a conductive function. In order to reduce the impact on the test electrode, the resistance of the auxiliary electrode should be as small as possible and not easy to polarize. In addition, its area is usually larger than the test electrode to enhance the accuracy and stability of the experiment. The reference electrode provides a reference potential for the test electrode in the experiment. Since its potential is fixed and known, the potential of the test electrode can be accurately obtained by measuring the potential difference between the test electrode and the reference electrode.

[0025] See also Figure 1 In one embodiment of the present invention, the upper half of the inner circumferential wall of the bearing sleeve 1 is provided with an internal thread. This design enables the bearing sleeve 1 to be tightly connected with the pressure cap 6. The inner diameter of the upper half of the bearing sleeve 1 is larger than the inner diameter of the lower half. This asymmetric design allows the inner circumferential wall of the bearing sleeve 1 to form a step surface, which meets the connection requirements of the pressure cap 6 and enhances the structural stability of the bearing sleeve 1. The shape of the plug-in sleeve 2 is thick in the middle and thin at both ends. This design enables the plug-in sleeve 2 to be tightly matched when inserted into the lower half of the bearing sleeve 1, so that the middle lower end surface of the plug-in sleeve 2 is against the step surface formed in the bearing sleeve 1, further enhancing the connection stability between the two. In order to ensure the stable connection between the bearing sleeve 1 and the plug sleeve 2, the pressure cap 6 is designed to be placed between the plug sleeve 2 and the bearing sleeve 1. The outer peripheral wall of the pressure cap 6 is provided with an external thread, so that it can be tightly threaded with the internal thread of the bearing sleeve 1. This connection method not only ensures the stability between the two, but also facilitates installation and disassembly. The lower end face of the pressure cap 6 is against the middle upper end face of the plug sleeve 2, and then the middle part of the plug sleeve 2 is pressed between the pressure cap 6 and the step surface of the inner peripheral wall of the bearing sleeve 1 through the pressure cap 6. In addition, a sealing groove is also provided in the middle part of the plug sleeve 2, and a sealing ring 25 is provided in the sealing groove. The sealing ring 25 is interference fit with the inner peripheral wall of the bearing sleeve 1, which effectively prevents the leakage of liquid or gas and improves the sealing performance of the carrier 10. This design not only ensures the pressure and temperature bearing performance of the carrier 10, but also prolongs the service life of the carrier 10.

[0026] See also Figure 1In this embodiment, an upper plastic pad 23 is provided on the inner side of the plug sleeve 2. The upper plastic pad 23 is sleeved on the lower side of the upper ends of the three connecting rods 21, which not only plays an insulating role, but also effectively prevents the connecting rods 21 from shaking in the plug sleeve 2. The lower plastic pad 24 is sleeved on the upper side of the lower ends of the three connecting rods 21, and corresponds to the upper plastic pad 23, and together ensures the stability of the connecting rods 21. It is worth mentioning that both the upper plastic pad 23 and the lower plastic pad 24 are interference fit with the inner circumferential wall of the plug sleeve 2, which means that they fit tightly and can effectively prevent the leakage of high-temperature and high-pressure liquids or gases from interfering with the connecting rods 21. This design is particularly important for applications that require high sealing. The plug sleeve 2 of this structure can ensure the accuracy and safety of the experiment. A retaining ring 11 is provided at the lower end of the inner circumferential wall of the bearing sleeve 1. This retaining ring 11 not only increases the strength of the bearing sleeve 1, but also provides a stable support point for the outer shell 31 of the three-electrode test probe 3. In actual use, the lower end surface of the shell 31 of the three-electrode test probe 3 abuts against the upper end surface of the retaining ring 11. This design enables the three-electrode test probe 3 to be stably fixed in the bearing sleeve 1 when inserted, reducing the risk of shaking and displacement.

[0027] See also Figure 3 In one embodiment of the present invention, the lower end of the connecting rod 21 is provided with a plug hole 211 along its own axial direction, which is an important feature of the connecting rod 21. The design of the plug hole 211 allows the wire 4 to be easily inserted therein, thereby achieving electrical connection. The upper half of the cross section of the plug hole 211 is in the shape of a rectangle, and this design enables the wire 4 to be better fixed when inserted into the plug hole 211. The rectangular shape makes it difficult for the wire 4 to slide in the plug hole 211, thereby ensuring the stability of the connection. In addition, the rectangular cross section can also increase the contact area of ​​the wire 4, which is conducive to improving the conductive performance of the wire 4. The lower half of the cross section of the plug hole 211 is in the shape of a trapezoid, and this design enables the wire 4 to be better tightened when inserted into the plug hole 211. The trapezoidal shape allows the wire 4 to be gradually tightened in the plug hole 211, thereby avoiding the wire 4 from loosening or slipping in the plug hole 211. This design not only improves the reliability of the connection, but also reduces electrical faults caused by loose wires 4. The wire core of the wire 4 is tightened in the upper half of the plug hole 211 via the lower half of the plug hole 211. This design enables the wire 4 to be better fixed and tightened after being inserted into the plug hole 211. In this way, the wire core of the wire 4 is tightly fixed in the plug hole 211, thereby ensuring the stability and reliability of the connection. In short, the design of the plug hole 211 of the connecting rod 21 in this embodiment is a very clever structure, which realizes the fixation, tightening and stable connection of the wire 4 through the combination design of the rectangle and the trapezoid. This design not only improves the reliability of the connection, but also reduces the electrical faults caused by the looseness of the wire 4.

[0028] See also Figure 4 In one embodiment of the present invention, the lower end of the bearing sleeve 1 is formed by three parts connected in sequence from bottom to top, namely, the first columnar part 12, the second columnar part 13 and the conical part 14. This design is not only compact in structure, but also powerful in function. The first columnar part 12, whose outer diameter is smaller than the second columnar part 13, provides a preliminary fixing function for the sleeve (that is, it is easy to connect with the test pipe 5). This design makes the sleeve more stable when fixed and not easy to deviate. At the same time, its lower end face is tangent to the inner circumferential wall of the test pipe 5, further enhancing the connection stability between the sleeve and the pipe, while not affecting the flow pattern of the fluid in the pipe, and truly restoring the test environment in the actual working conditions. The second columnar part 13, whose outer diameter is larger than the first columnar part 12, provides further support and fixation for the bearing sleeve 1, so that the bearing sleeve 1 can remain stable and not easily deformed when subjected to a large pressure. The conical part 14, whose outer diameter gradually increases from bottom to top, is finally connected to the outer circumferential wall of the bearing sleeve 1. This design reduces the phenomenon of stress concentration and improves the service life of the bearing sleeve 1. During the welding process, the solder 7 completely covers the first columnar portion 12 , the second columnar portion 13 and the conical portion 14 , which not only enhances the welding strength of the sleeve, but also further improves the durability of the sleeve, so that the load-bearing sleeve 1 can exhibit excellent performance in the connection of various test pipes 5 .

[0029] See also Figure 5In one embodiment of the present invention, a pipeline assembly for electrochemical testing is provided, including a test pipeline 5, wherein a carrier 10 is symmetrically installed on the upper and lower sides of the middle of the test pipeline 5, and the carrier 10 includes a carrier sleeve 1, a plug sleeve 2 and a three-electrode test probe 3. The lower end of the carrier sleeve 1 is sealed and welded to the test pipeline 5, and three connecting rods 21 are arranged in the plug sleeve 2. The three connecting rods 21 are cast in the plug sleeve 2 in a triangular shape through a first insulating filler 22. The upper and lower ends of the connecting rods 21 extend out of the first insulating filler 22, and the upper ends of the connecting rods 21 also serve as plugs. The three-electrode test probes 3 are respectively connected to the lower ends of the three connecting rods 21 through wires 4. The plug sleeve 2 and the three-electrode test probes 3 are inserted into the carrier sleeve 1 from top to bottom, and the three-electrode test probes 3 are in contact with the fluid in the test pipeline 5. The lower half of the plug sleeve 2 is sealed and plugged into the upper half of the carrier sleeve 1. In the part, the plug-in sleeve 2 is pressed against the bearing sleeve 1 through the pressure cap 6, and the upper half of the plug-in sleeve 2 extends out from the pressure cap 6. The first ball valve 51 and the second ball valve 52 are respectively installed at both ends of the test pipe 5. The corrosion test probes 53 are symmetrically mounted on the upper and lower sides of the test pipe 5 between the carrier 10 and the first ball valve 51. A pressure gauge 54 and an exhaust valve 55 are also installed on the upper side of the test pipe 5. The pressure gauge 54 is installed between the corrosion test probe 53 located on the upper side of the test pipe 5 and the carrier 10. The exhaust valve 55 is installed between the carrier 10 located on the upper side of the test pipe 5 and the second ball valve 52. A temperature sensor 56 and a liquid extraction valve 57 are also installed on the lower side of the test pipe 5. The temperature sensor 56 is installed between the corrosion test probe 53 located on the lower side of the test pipe 5 and the carrier 10. The liquid extraction valve 57 is installed between the carrier 10 located on the lower side of the test pipe 5 and the second ball valve 52.

[0030] It should be noted that: the connecting rod 21 is usually made of copper fluororubber, the first insulating filler 22 and the second insulating filler 32 are usually made of epoxy resin, the upper plastic pad 23 and the lower plastic pad 24 are usually made of PEEK material, and the sealing ring 25 is usually made of fluororubber.

[0031] See also Figure 5 In one embodiment of the present invention, a pipeline assembly for electrochemical testing is provided. The assembly is well-designed and fully functional, and can meet various complex electrochemical testing requirements, such as high-temperature and high-pressure multiphase flow pipeline electrochemical testing.

[0032] Specifically, the pipeline assembly mainly includes a test pipeline 5, which is the core part of the whole system and is used to transport and test electrolyte solutions (such as multiphase flow test solutions). The middle part of the test pipeline 5 is symmetrically equipped with carriers 10 on both sides, which are used to connect to the electrochemical workstation for electrochemical testing. The structure of the carrier 10 in the above examples can be used here, so as to obtain all the beneficial effects brought by the above carrier 10.

[0033] Corrosion test probes 53 are symmetrically mounted on the upper and lower sides of the test pipe 5 between the carrier 10 and the first ball valve 51. These probes are used to monitor the corrosion of the pipeline in real time when it corresponds to the actual working conditions. These probes can accurately measure and record information such as corrosion rate and corrosion type, providing important data support for subsequent test analysis and result evaluation.

[0034] The first ball valve 51 and the second ball valve 52 are respectively installed at both ends of the test pipeline 5, and these two valves control the inflow and outflow of electrolyte. The first ball valve 51 and the second ball valve 52 can be used to block the running pipeline and replace the three-electrode test probe 3 or the corrosion test probe 53 in the carrier 10.

[0035] A pressure gauge 54 and an exhaust valve 55 are also installed on the upper side of the test pipeline 5, which are used to detect the pressure in the pipeline and exhaust the gas in the pipeline respectively. The pressure gauge 54 is installed between the corrosion test probe 53 and the carrier 10 located on the upper side of the test pipeline 5, and can monitor the pressure changes caused by the test process in real time. The exhaust valve 55 is installed between the carrier 10 and the second ball valve 52 located on the upper side of the test pipeline 5 to ensure that the gas that may accumulate can be discharged in time during the test process to keep the inside of the pipeline clean and stable.

[0036] A temperature sensor 56 and a liquid extraction valve 57 are also installed on the lower side of the test pipe 5, which are used to measure the temperature in the pipe and extract or drain the electrolyte solution respectively. The temperature sensor 56 is installed between the corrosion test probe 53 and the carrier 10 located on the lower side of the test pipe 5, and can monitor the temperature changes caused by the test process in real time, which is very important for some electrochemical reactions that are sensitive to temperature. The liquid extraction valve 57 is installed between the carrier 10 and the second ball valve 52 located on the lower side of the test pipe 5, which is convenient for extracting a certain amount of electrolyte solution for further testing and analysis when needed.

[0037] By using this pipeline assembly, the efficiency and accuracy of electrochemical experiments can be greatly improved, providing researchers with a powerful tool that will help promote the development and progress of the field of electrochemistry.

[0038] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and simple improvements made to the essential contents of the present invention should be included in the protection scope of the present invention.

Claims

1. A carrier for electrochemical testing, characterized in that: It includes a bearing sleeve, a plug sleeve and a three-electrode test probe. The lower end of the bearing sleeve is sealed and welded to the test pipeline. Three connecting rods are arranged in the plug sleeve. The three connecting rods are cast in the plug sleeve in a triangular shape through a first insulating filler. The upper and lower ends of the connecting rods extend out of the first insulating filler. The upper end of the connecting rod also serves as a plug. The three-electrode test probe is connected to the lower ends of the three connecting rods one by one through wires. The plug sleeve and the three-electrode test probe are inserted into the bearing sleeve from top to bottom. The three-electrode test probe contacts the fluid in the test pipeline. The lower half of the plug sleeve is sealed and plugged into the upper half of the bearing sleeve. The plug sleeve is pressed against the bearing sleeve through a pressure cap, and the upper half of the plug sleeve extends out of the pressure cap. The three-electrode test probe includes a shell, a reference electrode, a test electrode and auxiliary electrode; a retaining ring is provided at the lower end of the inner circumferential wall of the bearing sleeve, and the lower end surface of the shell of the three-electrode test probe is abutted against the upper end surface of the retaining ring; the lower end of the connecting rod is provided with a plug-in hole along its own axial direction, and the core of the wire is tightened in the upper half of the plug-in hole through the lower half of the plug-in hole, the upper half of the bearing sleeve is provided with an internal thread, and the inner diameter of the upper half of the bearing sleeve is larger than the inner diameter of the lower half, the plug-in sleeve is thick in the middle and thin at both ends, and the lower half of the plug-in sleeve is inserted into the lower half of the bearing sleeve, and the middle lower end surface of the plug-in sleeve is abutted against the step surface formed in the bearing sleeve, the pressure cap is arranged on the plug-in sleeve, and the outer circumferential wall of the pressure cap is provided with an external thread, the pressure cap is threadedly connected with the internal thread of the bearing sleeve through the external thread, and the lower end surface of the pressure cap is abutted against the middle upper end surface of the plug-in sleeve.

2. The electrochemical test carrier according to claim 1, characterized in that: The reference electrode, the test electrode and the auxiliary electrode are integrally cast vertically in the outer shell through a second insulating filler; the upper ends of the reference electrode, the test electrode and the auxiliary electrode are connected to the wires, which pass through the outer shell and are connected to corresponding connecting rods; the lower ends of the reference electrode, the test electrode and the auxiliary electrode are in contact with the fluid in the test pipeline.

3. The electrochemical test carrier according to claim 2, characterized in that: An upper plastic pad is provided in the plug sleeve and is sleeved on the lower side of the upper ends of the three connecting rods. A lower plastic pad is provided in the plug sleeve and is sleeved on the upper side of the lower ends of the three connecting rods. Both the upper plastic pad and the lower plastic pad are interference fit with the inner circumferential wall of the plug sleeve.

4. The electrochemical test carrier according to claim 3, characterized in that: The shape of the upper half of the cross section of the plug hole is a rectangle, and the shape of the lower half of the cross section of the plug hole is a trapezoid.

5. The electrochemical test carrier according to claim 4, characterized in that: The lower end of the bearing sleeve is formed by connecting a first columnar portion, a second columnar portion and a conical portion in sequence from bottom to top. The outer diameter of the first columnar portion is smaller than the outer diameter of the second columnar portion. The outer diameter of the conical portion gradually increases from bottom to top and is finally connected to the outer peripheral wall of the bearing sleeve. When the bearing sleeve is sealed and welded to the test pipe, the solder covers the first columnar portion, the second columnar portion and the conical portion.

6. The electrochemical test carrier according to claim 5, characterized in that: The lower end surface of the first columnar portion is tangent to the inner peripheral wall of the test pipe.

7. The electrochemical test carrier according to claim 6, characterized in that: A sealing groove is provided in the middle of the plug sleeve, a sealing ring is sleeved in the sealing groove, and the sealing ring is interference-fitted with the inner peripheral wall of the bearing sleeve.

8. A pipeline assembly for electrochemical testing, comprising a test pipeline, characterized in that: The middle part of the test pipe is symmetrically equipped with a carrier on both sides, the carrier includes a carrier sleeve, a plug sleeve and a three-electrode test probe. The lower end of the carrier sleeve is sealed and welded to the test pipe. Three connecting rods are arranged in the plug sleeve. The three connecting rods are cast in the plug sleeve in a triangle shape through a first insulating filler. The upper and lower ends of the connecting rods extend from the first insulating filler. The upper end of the connecting rod also serves as a plug. The three-electrode test probe is connected to the lower ends of the three connecting rods one by one through wires. The plug sleeve and the three-electrode test probe are inserted into the carrier sleeve from top to bottom. The three-electrode test probe contacts the fluid in the test pipe, the lower half of the plug sleeve is sealed and plugged into the upper half of the bearing sleeve, the plug sleeve is pressed against the bearing sleeve through a pressure cap, and the upper half of the plug sleeve extends out of the pressure cap. The three-electrode test probe includes a shell, a reference electrode, a test electrode and an auxiliary electrode; a retaining ring is provided at the lower end of the inner circumferential wall of the bearing sleeve, and the lower end face of the shell of the three-electrode test probe is pressed against the upper end face of the retaining ring; the lower end of the connecting rod is provided with a plug-in hole along its own axial direction, and the core of the wire is tightened in the upper half of the plug-in hole through the lower half of the plug-in hole. The test pipe is provided with a first ball valve and a second ball valve at both ends thereof, respectively; the test pipe between the carrier and the first ball valve is symmetrically mounted with corrosion test probes at the upper and lower sides thereof; a pressure gauge and an exhaust valve are also installed at the upper side of the test pipe; the pressure gauge is installed between the corrosion test probe located at the upper side of the test pipe and the carrier; the exhaust valve is installed between the carrier located at the upper side of the test pipe and the second ball valve; a temperature sensor and a liquid extraction valve are also installed at the lower side of the test pipe; the temperature sensor is installed between the corrosion test probe located at the lower side of the test pipe and the carrier; the exhaust valve is installed between the carrier located at the upper side of the test pipe and the second ball valve; The liquid valve is installed between the carrier located at the lower side of the test pipeline and the second ball valve. The upper half of the carrier sleeve is provided with an internal thread, and the inner diameter of the upper half of the carrier sleeve is larger than the inner diameter of the lower half. The plug-in sleeve is thick in the middle and thin at both ends. The lower half of the plug-in sleeve is inserted into the lower half of the carrier sleeve. The middle lower end surface of the plug-in sleeve abuts against the step surface formed in the carrier sleeve. The pressure cap is sleeved on the plug-in sleeve, and the outer peripheral wall of the pressure cap is provided with an external thread. The pressure cap is threadedly connected to the internal thread of the carrier sleeve through the external thread, and the lower end surface of the pressure cap abuts against the middle upper end surface of the plug-in sleeve.

Images