Ceramic reference electrode

Abstract

The utility model provides a ceramic reference electrode which comprises a reference electrode body, the reference electrode body is provided with a tube body and an electrode wire arranged in the tube body, and the tube body is provided with an outer tube body and an inner tube body; the outer pipe body is arranged on the outer side of the inner pipe body in a sleeving mode, and the outer pipe body and the inner pipe body are made of ceramic products with micropores. By adopting the tube body made of the ceramic product with the micropores, when the pore diameters of the micropores of the outer tube body and the inner tube body are 1.25 microns, the sealing performance of the tube body is optimal, filling liquid can be prevented from flowing out through the pore diameters, and enough ions and electrons can pass through, so that the loss of copper sulfate crystals can be effectively prevented, and the accuracy of test data is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of reference electrodes, in particular to a ceramic reference electrode. Background Art

[0002] The reference electrode is used as a reference electrode when measuring the potential of various electrodes. Common deep reference electrodes are mainly copper / long-term reference electrode, high-purity zinc electrode and silver / silver chloride electrode. The permeability of the long-term reference electrode determines the service life of the long-term reference electrode.

[0003] The existing long-term reference electrode has high permeability, and copper sulfate crystals penetrate the outer wall. If it is used in moist soil or water for a long time, it will cause a large amount of copper sulfate crystals to flow out, making it unable to meet the basic requirements of copper sulfate saturated solution, resulting in inaccurate final test and control data.

[0004] In view of this, how to solve the defects existing in the above technical solutions has become one of the problems to be solved urgently in the field of reference electrode technology. Utility Model Content

[0005] In view of the problems existing in the background technology, the purpose of the utility model is to overcome the shortcomings of the prior art and provide a ceramic reference electrode to solve the problem that the existing reference electrode has high permeability and copper sulfate crystals penetrate into the outer wall. If it is immersed in wet soil or water for a long time, it will cause a large amount of copper sulfate crystals to flow out, making it unable to meet the basic requirements of copper sulfate saturated solution, resulting in inaccurate final test and control data.

[0006] The utility model is realized through the following technical scheme. The utility model discloses a ceramic reference electrode, including a reference electrode body, wherein the reference electrode body is provided with a tube body and an electrode wire arranged in the tube body, and the tube body is provided with an outer tube body and an inner tube body; the outer tube body is sleeved on the outside of the inner tube body, and the outer tube body and the inner tube body are made of ceramic products with micropores.

[0007] Preferably, the micropore diameters of the outer tube and the inner tube are 1.25-1.6 um.

[0008] 1.25um.

[0009] Preferably, the distance between two adjacent groups of micropores in the outer tube body and the inner tube body is 2.5 um.

[0010] Preferably, a sealing member and a protective cover are respectively provided at both ends of the tube body, and one end of the electrode wire arranged in the tube body is fixedly mounted on the sealing member.

[0011] Preferably, the sheath is mounted on the outer tube body in a fixed connection manner, and a connecting belt is provided on the sheath, and the connecting belt and the sheath are integrated, and positioning columns are provided on both inner and outer sides of the connecting belt.

[0012] Preferably, a collar is fixedly provided on the outer tube body arranged on one side of the sheath, and through holes are provided on the collar, the outer tube body and the inner tube body, and the positioning column is provided in the hole, and the hole is sealed by the positioning column.

[0013] Preferably, the sealing member is provided with a sealing cap, and the sealing cap is threadedly installed in the inner tube body, and a second sealing ring is provided between the inner tube body and the sealing cap.

[0014] Preferably, the sealing cap is provided with a through hole, and the through hole is used for the wire to pass through.

[0015] Preferably, the inner tube body is threadedly connected to the protective sleeve, and a first sealing ring is provided between the protective sleeve and the inner tube body.

[0016] In summary, the beneficial effects of the utility model are:

[0017] By adopting a tube body made of a ceramic product with micropores, and when the micropore diameters of the outer tube body and the inner tube body are 1.25um, the sealing performance of the tube body is optimal, which can prevent the filling liquid from flowing out through the pores, while allowing sufficient ions and electrons to pass through, thereby effectively preventing the loss of copper sulfate crystals and improving the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of a ceramic reference electrode according to an embodiment of the present invention;

[0019] Figure 2 A partial structural schematic diagram of an embodiment of a ceramic reference electrode of the utility model;

[0020] Figure 3 An exploded view of an outer tube body provided for an embodiment of a ceramic reference electrode of the utility model;

[0021] Figure 4 An exploded view of an inner tube body provided in an embodiment of a ceramic reference electrode of the utility model.

[0022] Reference numerals:

[0023] 100. Reference electrode body;

[0024] 10. Wire;

[0025] 20. Sheath;

[0026] 30. Connecting belt; 301. Positioning column;

[0027] 4252690, pipe body; 401, outer pipe body; 402, inner pipe body;

[0028] 50. protective sleeve; 501. first sealing ring;

[0029] 60, sealing member; 601, through hole; 602, sealing cap; 603, second sealing ring;

[0030] 70, ring; 701, hole

[0031] 80. Electrode wire. DETAILED DESCRIPTION

[0032] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the accompanying drawings, it should be understood that the utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to facilitate a thorough understanding of the utility model and to fully convey the concept of the utility model to those skilled in the art.

[0035] See also Figures 1 to 4 As shown, an embodiment of the utility model provides a ceramic reference electrode, including a reference electrode body 100, wherein the reference electrode body 100 is provided with a tube body 40 and an electrode wire 80 arranged in the tube body 40, and the tube body 40 is provided with an outer tube body 401 and an inner tube body 402; the outer tube body 401 is sleeved on the outside of the inner tube body 402, and the outer tube body 401 and the inner tube body 402 are made of ceramic products with micropores.

[0036] Furthermore, the micropore diameters of the outer tube body 401 and the inner tube body 402 are 1.25-1.6 um, preferably 1.25 um.

[0037] Furthermore, the distance between two adjacent groups of micropores in the outer tube body 401 and the inner tube body 402 is 2.5 um.

[0038] In this embodiment, by adopting the tube body 40 made of ceramic products with micropores, and when the micropore diameters of the outer tube body 401 and the inner tube body 402 are 1.25um, the sealing performance of the tube body 40 is optimal, which can prevent the filling liquid from flowing out through the aperture, while sufficient ions and electrons pass through, thereby effectively preventing the loss of copper sulfate crystals and improving the accuracy of the test data.

[0039] Furthermore, a filling cavity is provided between the outer tube body 401 and the inner tube body 402, and a filling liquid is provided in the filling cavity. The filling liquid can be a KCL electrolyte with a concentration of 3.33 mol / L, and the filling liquid is not limited to 3.33 mol / L KCL electrolyte, as long as it is an electrolyte.

[0040] See also Figures 1 to 4 As shown, a seal 60 and a protective cover 50 are respectively provided at both ends of the tube body 40, and one end of the electrode wire 80 provided in the tube body 40 is fixedly mounted on the seal 60, passes through the seal 60 and is connected to the conductor 10;

[0041] The other end of the electrode wire 80 is led out from one end close to the protective cover 5 and is arranged in the protective cover 50. The electrode wire can be made of tungsten wire, silver wire, etc., preferably silver wire.

[0042] When the reference electrode is used in a high temperature environment, the filling liquid in the reference electrode may expand due to the high temperature and become too large in volume, causing the seal to loosen and the filling liquid inside to leak. To solve the above problem, please refer to Figures 1 to 4As shown, the sheath 20 is fixedly mounted on the outer tube body 401 , and a connecting belt 30 is provided on the sheath 20 , and the connecting belt 30 and the sheath 20 are integrated, and positioning posts 301 are fixedly provided on both inner and outer sides of the connecting belt 30 .

[0043] Furthermore, a collar 70 is fixedly provided on the outer tube body 401 arranged on one side of the sheath 20, and a through hole 701 is provided on the collar 70, the outer tube body 401 and the inner tube body 402, and the positioning column 301 is provided in the hole 701, and the hole 701 is sealed by the positioning column 301.

[0044] In this embodiment, when the reference electrode is used in a high temperature environment and expands due to excessive temperature, it is only necessary to open the positioning column to draw out part of the filling solution inside.

[0045] See also Figures 1 to 4 As shown, the sealing member 60 is provided with a sealing cap 601 , and the sealing cap 601 is threadedly installed in the inner tube body 402 , and a second sealing ring 603 is provided between the inner tube body 402 and the sealing cap 601 .

[0046] In this embodiment, a second sealing ring 603 is provided between the sealing cap 601 and the inner tube body 402 to improve the sealing performance.

[0047] Furthermore, the sealing cap 601 is provided with a through hole 601 , and the through hole is used for the wire 10 to pass through.

[0048] See also Figures 1 to 4 As shown, the inner tube body 402 is threadedly connected to the protective sleeve 50, and the protective sleeve 50 is made of polyurethane material. A first sealing ring 501 is provided between the protective sleeve 50 and the inner tube body 402 to improve the sealing performance.

[0049] In this embodiment, since the sensitive end of the reference electrode cannot come into contact with hard objects, a protective cover is added to improve the protection.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not restrictive. Although the utility model is described in detail with reference to the embodiments, it should be understood by those skilled in the art that any modification or equivalent replacement of the technical solution of the utility model does not deviate from the spirit and scope of the technical solution of the utility model, and should be included in the scope of the claims of the utility model.

Claims

1. A ceramic reference electrode, characterized in that: It includes a reference electrode body, which is provided with a tube body and an electrode wire arranged in the tube body, and the tube body is provided with an outer tube body and an inner tube body; the outer tube body is sleeved on the outside of the inner tube body, and the outer tube body and the inner tube body are made of ceramic products with micropores.

2. A ceramic reference electrode according to claim 1, characterized in that: The micropore diameters of the outer tube body and the inner tube body are 1.25-1.6 um.

3. A ceramic reference electrode according to claim 2, characterized in that: The distance between two adjacent groups of micropores in the outer tube body and the inner tube body is 2.5 um.

4. A ceramic reference electrode according to claim 1, characterized in that: The two ends of the tube body are respectively provided with a sealing member and a protective cover, and one end of the electrode wire arranged in the tube body is fixedly mounted on the sealing member.

5. A ceramic reference electrode according to claim 1, characterized in that: The outer tube body is installed with a sheath, and a connecting belt is arranged on the sheath, and the connecting belt and the sheath are integrated, and positioning columns are arranged on both inner and outer sides of the connecting belt.

6. A ceramic reference electrode according to claim 5, characterized in that: A collar is provided on the outer tube body disposed on one side of the sheath, and through holes are provided on the collar, the outer tube body and the inner tube body, and the positioning column is provided in the hole, and the hole is sealed by the positioning column.

7. A ceramic reference electrode according to claim 4, characterized in that: The sealing member is provided with a sealing cap, and the sealing cap is installed in the inner tube body, and a second sealing ring is provided between the inner tube body and the sealing cap.

8. A ceramic reference electrode according to claim 7, characterized in that: The sealing cap is provided with a through hole, and the through hole is used for the wire to pass through.

9. A ceramic reference electrode according to claim 1, characterized in that: The inner tube body is threadedly connected to the protective sleeve, and a first sealing ring is arranged between the protective sleeve and the inner tube body.

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