Corrosion-resistant high-temperature quadrupole conductivity tester

Abstract

The utility model discloses a kind of corrosion-resistant high-temperature four-pole conductivity tester, it relates to conductivity tester technical field, including lengthened rear shell, the lengthened rear shell is made of silicon nitride ceramic material, electrode short pole, adapter and connecting piece are made of 316L stainless steel material treated with surface passivation, the utility model solves the problem of rust mark oxidation etc. that the contact part of existing tester appears, simultaneously dismounting difficult, the utility model is set by the adoption of lengthened rear shell and the 316L stainless steel material treated with surface passivation, the silicon nitride ceramic of lengthened rear shell is resistant to molten metal erosion, while good insulation, measuring electrode front end cylindrical, avoid right angle, recess and other structures prone to material accumulation, 316L stainless steel material passivation can form dense chromium oxide film on surface, enhance the ability of resistance to chloride ion corrosion, by the mutual thread connection between lengthened rear shell, electrode short pole, adapter and connecting piece, so that tester overall mechanism is easy to disassemble, it is convenient to disassemble and clean periodically.

Description

Technical Field

[0001] This utility model relates to the technical field of conductivity testers, specifically a corrosion-resistant high-temperature four-electrode conductivity tester. Background Technology

[0002] The high-temperature four-electrode conductivity meter is a professional instrument specifically designed for accurately measuring the conductivity of liquids or molten substances in high-temperature environments. It is widely used in fields such as chemical engineering, energy, materials, and metallurgy, where temperature and measurement accuracy requirements are extremely high.

[0003] In existing high-temperature four-electrode conductivity testers, during the handling of test samples or the pouring of media, the media is prone to contacting non-protected areas such as the instrument housing and wiring interfaces above the test end due to tilting during operation or sloshing of the liquid surface. This can lead to rust, coating peeling, or oxidation of metal contacts at the contact points. Furthermore, when it is necessary to clean contaminants on the electrode surface, replace aging electrodes, or switch between electrodes of different ranges, multiple fixed components need to be disassembled using special tools, and components are prone to being lost or misaligned during the disassembly and assembly process.

[0004] To address the aforementioned issues, a corrosion-resistant, high-temperature four-electrode conductivity tester is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a corrosion-resistant high-temperature four-electrode conductivity tester, which solves the problem in the prior art where, during the handling of test samples or the pouring of media, the medium is easily exposed to non-protected areas such as the instrument housing and wiring interfaces above the test end due to tilting or sloshing of the liquid surface. This results in rust, coating peeling, or oxidation of metal contacts at the contact points. Furthermore, when it is necessary to clean contaminants on the electrode surface, replace aging electrodes, or switch between electrodes of different ranges, multiple fixed components need to be disassembled with special tools, and components are prone to being lost or misaligned during disassembly and assembly.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant high-temperature four-electrode conductivity tester, comprising an electrode short rod, an extended rear shell threaded to one side of the electrode short rod, four sets of measuring electrodes inserted inside the extended rear shell, an adapter screwed to one side of the electrode short rod, a connector threaded to one side of the adapter, a protective sleeve threaded to one side of the connector, the extended rear shell being made of silicon nitride ceramic material, and the electrode short rod, adapter, and connector being made of 316L stainless steel with surface passivation treatment.

[0007] Preferably, a threaded connector is fitted onto one side of the connector, a gasket is provided between the connector and the adapter, a sealing ring E is fitted inside the gasket, and a sealing ring D is provided between the adapter and the connector.

[0008] Preferably, a sleeve is threadedly connected to one side of the threaded connector, a sealing ring C is filled between the sleeve and the threaded connector, and a side-mounted engaging threaded part is provided on one side of the sleeve.

[0009] Preferably, a connecting card is inserted into one side of the sleeve via a side-mounted snap-fit ​​threaded component, and a VP connector is sleeved inside the connecting card, with a plug in the middle of the VP connector.

[0010] Preferably, a top cover for protecting the connecting card is threaded to one side of the sleeve, a sealing ring B is filled between the sleeve and the top cover, and a sealing ring A is filled between the VP connector and the top cover.

[0011] Preferably, a sealing ring F is provided between the short electrode rod and the extended rear shell, and a sealing ring G is provided side by side between the extended rear shell and the measuring electrode.

[0012] Preferably, a swivel is fixedly provided at one end of the extended rear shell, and a threaded slot for threaded connection of the electrode short rod is provided inside the extended rear shell. A wire groove is provided on one side of the threaded slot, and an electrode slot for inserting the measuring electrode is provided on one side of the wire groove.

[0013] Preferably, one end of the protective sleeve has an internal threaded groove corresponding to the connecting piece.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a corrosion-resistant high-temperature four-electrode conductivity tester. Through the use of an extended back shell and passivated 316L stainless steel, the extended back shell's silicon nitride ceramic is resistant to molten metal corrosion and has good insulation, preventing short circuits between the measuring electrodes. The front end of the measuring electrode is cylindrical, avoiding right angles, grooves, and other structures prone to material accumulation, preventing corrosive media from accumulating and concentrating in the grooves at high temperatures, thus preventing localized crevice corrosion. The extended back shell design extends the measuring depth of the measuring electrodes, reducing contact between the upper part of the tester and the tested medium, extending the tester's service life. The passivation of the 316L stainless steel forms a dense chromium oxide film on the surface, enhancing resistance to chloride ion corrosion. This solves the problem in existing high-temperature four-electrode conductivity testers where, during sample handling or pouring, the medium easily comes into contact with unprotected areas such as the instrument housing and wiring interfaces above the testing end due to tilting or liquid surface sloshing, leading to rust, coating peeling, or metal contact oxidation.

[0015] 2. The corrosion-resistant high-temperature four-electrode conductivity tester provided by this utility model makes the overall structure of the tester easy to disassemble and facilitates regular disassembly and cleaning by using the threaded connection between the extended back shell, electrode short rod, adapter and connector. This solves the problem that existing high-temperature four-electrode conductivity testers require the use of special tools to disassemble multiple fixed parts when cleaning contaminants on the electrode surface, replacing aging electrodes, or switching between electrodes of different ranges, and that parts are prone to being lost or misaligned during disassembly and assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall disassembled structure of this utility model; Figure 2 This is a schematic diagram of the overall assembly structure of this utility model; Figure 3 This is a schematic diagram of the overall structure of this utility model; Figure 4 This is a schematic diagram showing the disassembled structure of the protective sleeve of this utility model; Figure 5 This is a schematic diagram of the exploded structure of this utility model; Figure 6 This is a schematic diagram of the extended rear shell of this utility model; Figure 7 This is a schematic diagram of the component assembly structure of this utility model.

[0017] In the diagram: 1. Sealing ring A; 2. Top cover; 3. Plug; 4. VP connector; 5. Connecting clip; 6. Sealing ring B; 7. Sleeve; 701. Side-mounted snap-fit ​​threaded part; 8. Sealing ring C; 9. Threaded connector; 10. Sealing ring D; 11. Connector; 12. Adapter; 13. Electrode short rod; 14. Washer; 15. Sealing ring E; 16. Sealing ring F; 17. Extended back cover; 171. Rotary ring; 172. Threaded slot; 173. Wire groove; 174. Electrode slot; 18. Measuring electrode; 19. Sealing ring G; 20. Protective sleeve; 201. Internal threaded groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0020] Combination Figure 1 This utility model discloses a corrosion-resistant high-temperature four-electrode conductivity tester, comprising an electrode short rod 13, an extended rear shell 17 threadedly connected to one side of the electrode short rod 13, four sets of measuring electrodes 18 inserted inside the extended rear shell 17, an adapter 12 screwedly connected to one side of the electrode short rod 13, a connector 11 threadedly connected to one side of the adapter 12, and a protective sleeve 20 threadedly connected to one side of the connector 11. The extended rear shell 17 is made of silicon nitride ceramic material, and the electrode short rod 13, adapter 12, and connector 11 are made of 316L stainless steel with surface passivation treatment.

[0021] Specifically, the silicon nitride ceramic of the extended back shell 17 is resistant to molten metal corrosion and has good insulation properties, preventing short circuits between the measuring electrodes 18. The front end of the measuring electrode 18 is cylindrical, avoiding right angles, grooves, and other structures that easily accumulate material, preventing corrosive media from accumulating and concentrating in the grooves at high temperatures, thus avoiding localized crevice corrosion. The extended back shell 17 also extends the measuring depth of the measuring electrode 18, reducing contact between the upper part of the tester and the test medium, and improving the service life of the tester. The protective sleeve 20 is directly connected and protected via the connector 11, providing a large protection range and achieving good protection. For enhanced protection, the threaded connections between the extended rear shell 17, electrode short rod 13, adapter 12, and connector 11 make the overall structure of the tester easy to disassemble and facilitate regular cleaning. Since the medium may form scale on the surface of the measuring electrode 18 or the extended rear shell 17 at high temperatures, this scale not only affects measurement accuracy but can also cause intergranular corrosion. The detachable design facilitates timely removal of the scale. Additionally, the threaded connection includes a sealing ring to improve the tester's sealing performance. The 316L stainless steel material used in this device is passivated to form a dense chromium oxide film on the surface, enhancing resistance to chloride ion corrosion.

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Example 1: Combination Figures 2-7 A threaded connector 9 is fitted onto one side of the connector 11. A washer 14 is placed between the connector 11 and the adapter 12. A sealing ring E15 is fitted inside the washer 14. A sealing ring D10 is placed between the adapter 12 and the connector 11. The threaded connector 9 is snapped onto one end of the connector 11 to achieve assembly. The sealing ring D10 is fitted to one side of the threaded connector 9. The threaded connection between the adapter 12 and the connector 11 provides compressive force to the sealing ring D10, stabilizing the threaded connector 9 and facilitating connection between the threaded connector 9 and one end of the tester. One side of the threaded connector 9 is the control end of the tester, and the other side is the test end of the tester, serving as an isolation function. The washer 14 and the sealing ring E15 improve the stability of the threaded connection of the tester.

[0024] A sleeve 7 is threadedly connected to one side of the threaded connector 9. A sealing ring C8 is filled between the sleeve 7 and the threaded connector 9. A side-mounted engaging threaded part 701 is provided on one side of the sleeve 7. The sealing ring C8 realizes the sealed connection between the sleeve 7 and the threaded connector 9. The side-mounted engaging threaded part 701 provides connection positioning for the connecting card 5.

[0025] A connecting card 5 is inserted into one side of the sleeve 7 via a side-mounted snap-fit ​​threaded part 701. A VP connector 4 is fitted inside the connecting card 5. A plug 3 is provided in the middle of the VP connector 4. The connecting card 5 positions and fixes the VP connector 4. The plug 3 has a built-in wire that is electrically connected to the test analyzer.

[0026] One side of the sleeve 7 is threaded with a top cover 2 for protecting the connecting card 5. A sealing ring B6 is filled between the sleeve 7 and the top cover 2. A sealing ring A1 is filled between the VP connector 4 and the top cover 2. The top cover 2 achieves sealing protection for the outer end of the connecting card 5.

[0027] Example 2: Combination Figures 2-6 A sealing ring F16 is provided between the short electrode rod 13 and the extended rear shell 17, and a sealing ring G19 is provided side by side between the extended rear shell 17 and the measuring electrode 18. The sealing rings F16 and G19 improve the sealing performance of the test end of the tester, preventing the test medium from entering the tester and affecting the accuracy of the test, and causing damage to the tester.

[0028] A rotating ring 171 is fixedly installed at one end of the extended rear shell 17. A threaded slot 172 for threaded connection of the electrode short rod 13 is opened inside the extended rear shell 17. A wire groove 173 is opened on one side of the threaded slot 172. An electrode slot 174 for inserting the measuring electrode 18 is opened on one side of the wire groove 173. The electrode slot 174, the wire groove 173 and the threaded slot 172 inside the extended rear shell 17 are interconnected to complete the wiring. The external installation of the rotating ring 171 makes it easier to disassemble the extended rear shell 17.

[0029] The protective sleeve 20 has an internal threaded groove 201 inside the corresponding connector 11 at one end, and the internal threaded groove 201 completes the protective connection of the protective sleeve 20.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant high-temperature four-electrode conductivity tester, comprising an electrode rod (13), characterized in that: The electrode rod (13) is threaded to one side with an extended back shell (17). Four sets of measuring electrodes (18) are inserted inside the extended back shell (17). The electrode rod (13) is screwed to one side with an adapter (12). The adapter (12) is threaded to one side with a connector (11). The connector (11) is threaded to one side with a protective sleeve (20). The extended back shell (17) is made of silicon nitride ceramic material. The electrode rod (13), adapter (12) and connector (11) are made of 316L stainless steel with surface passivation treatment.

2. The corrosion-resistant high-temperature four-electrode conductivity tester according to claim 1, characterized in that: A threaded connector (9) is fitted on one side of the connector (11), a gasket (14) is filled between the connector (11) and the adapter (12), a sealing ring E (15) is fitted inside the gasket (14), and a sealing ring D (10) is provided between the adapter (12) and the connector (11).

3. The corrosion-resistant high-temperature four-electrode conductivity tester according to claim 2, characterized in that: A sleeve (7) is threadedly connected to one side of the threaded connector (9), and a sealing ring C (8) is provided between the sleeve (7) and the threaded connector (9). A side-mounted engaging threaded part (701) is provided on one side of the sleeve (7).

4. The corrosion-resistant high-temperature four-electrode conductivity tester according to claim 3, characterized in that: A connecting card (5) is inserted into one side of the sleeve (7) via a side-mounted snap-fit ​​threaded part (701). A VP connector (4) is sleeved inside the connecting card (5), and a plug (3) is provided in the middle of the VP connector (4).

5. The corrosion-resistant high-temperature four-electrode conductivity tester according to claim 4, characterized in that: The sleeve (7) is threaded to a top cover (2) for protecting the connecting card (5), and a sealing ring B (6) is filled between the sleeve (7) and the top cover (2), and a sealing ring A (1) is filled between the VP connector (4) and the top cover (2).

6. The corrosion-resistant high-temperature four-electrode conductivity tester according to claim 1, characterized in that: A sealing ring F (16) is provided between the short electrode rod (13) and the extended rear shell (17), and a sealing ring G (19) is provided side by side between the extended rear shell (17) and the measuring electrode (18).

7. The corrosion-resistant high-temperature four-electrode conductivity tester according to claim 1, characterized in that: One end of the extended rear shell (17) is fixedly provided with a swivel ring (171). The interior of the extended rear shell (17) is provided with a threaded slot (172) for threaded connection of the electrode short rod (13). One side of the threaded slot (172) is connected to an wire groove (173), and one side of the wire groove (173) is connected to an electrode slot (174) for inserting the measuring electrode (18).

8. The corrosion-resistant high-temperature four-electrode conductivity tester according to claim 1, characterized in that: The protective sleeve (20) has an internal threaded groove (201) inside the corresponding connector (11) at one end.

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