Reference electrode for cement floor and manufacturing method thereof

Abstract

The invention discloses a reference electrode for a cement floor and a manufacturing method of the reference electrode. The reference electrode comprises an outer lead, a sealing cover, a wire, a solution pipe, a microporous chassis and a sponge sleeve, the microporous chassis comprises a base and a convex column which are integrally formed; the protruding column is located in the center of the base and extends upwards in the mode of being perpendicular to the base. The sponge sleeve wraps the lower portion of the micropore base plate and is used for making direct contact with the cement floor. The solution pipe is arranged on the convex column in a sleeving manner, and a cavity for containing the saturated copper sulfate solution is formed by the solution pipe and the convex column; the sealing cover is arranged at the top of the solution pipe and is used for sealing the cavity; one end of the wire is inserted into the saturated copper sulfate solution, and the other end of the wire is connected to the outer lead; and the outer lead passes through the sealing cover and is led out. According to the invention, the electrochemical potential of the cement and concrete surface can be expressed more accurately.

Description

Technical Field

[0001] The invention relates to the field of electrochemistry, and in particular to a reference electrode for cement floor and a manufacturing method thereof. Background Art

[0002] The reference electrode is an electrode used as a reference for comparison when measuring the potential of various electrodes. Existing reference electrodes are widely used in electrochemical measurement and monitoring. The principle of a common reference electrode is to measure the electromotive force of the battery with a relatively constant potential value as a reference, and then calculate the electrode potential of the electrode being measured.

[0003] However, when conventional reference electrodes are applied to cement and concrete floors, due to reasons such as the flatness of the ground and gaps, the contact effect between the reference electrode and the ground is poor, which further affects the measurement accuracy. In addition, before using the existing reference electrode in contact with the ground, it is usually necessary to wet the bottom of the reference electrode with water to accelerate the formation of a good electrical connection between the reference electrode and the ground. However, the basic requirement for the application of the reference electrode on the surface of cement and concrete is that the saturated copper sulfate solution is fully in contact with the cement surface after leaking through the microporous ceramic of the reference electrode, thereby utilizing the reversible reaction of copper-saturated copper sulfate solution to stably express the electrochemical potential of the cement surface. However, if the bottom of the reference electrode is wetted before use, the ground will be in contact with a copper sulfate solution that is severely diluted with water, which changes the copper-saturated copper sulfate solution-cement surface primary battery system, and the electrochemical potential of the cement and concrete surfaces cannot be correctly expressed.

[0004] In view of this, it is necessary to improve the existing reference electrode so as to improve the correct expression of the electrochemical potential on the surface of cement and concrete. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides a reference electrode for cement floor and a manufacturing method thereof, so as to improve the contact effect between the reference electrode and the ground and improve the measurement accuracy.

[0006] The present invention adopts the following technical solution.

[0007] According to a first aspect of the present invention, a reference electrode for cement floor is provided. The reference electrode comprises: an external lead, a cover, a conductor, a solution tube, a microporous bottom plate, and a sponge cover;

[0008] The microporous chassis includes an integrally formed base and a convex column; the convex column is located at the center of the base and extends upward perpendicular to the base; the sponge sleeve covers the lower part of the microporous chassis for direct contact with the cement floor; the solution tube is sleeved on the convex column and forms a cavity with the convex column for containing a saturated copper sulfate solution; the cover is arranged on the top of the solution tube for sealing the cavity; one end of the wire is used to be inserted into the saturated copper sulfate solution, and the other end passes through the cover to be connected to the external lead.

[0009] Furthermore, the microporous chassis is a ceramic microporous chassis with a pore size of less than 1 μm and a porosity of more than 75%.

[0010] Furthermore, the sponge cover is a polyurethane foam sponge cover.

[0011] Furthermore, the cross-sections of the base and the boss are both circular, and the cross-sectional diameter of the boss is smaller than the cross-sectional diameter of the base; the base is a circular base with a diameter of not less than 5 cm.

[0012] Furthermore, the external lead is a copper soft wire coated with an insulating material, and the conducting wire is a copper wire and is welded to the external lead.

[0013] Furthermore, the sealing cover is made of insulating material and is detachably connected to the solution tube through a threaded seal.

[0014] Furthermore, the solution tube is made of a transparent insulating material.

[0015] Furthermore, the conducting wire is a copper wire, one end of which is immersed in a saturated copper sulfate solution, and the other end of which passes through the cover to be connected to an external lead and is sealed and fixed to the cover.

[0016] Furthermore, the upper portion of the protruding column is sealed and fixed to the solution tube by epoxy resin; and the conductive wire is sealed and fixed to the sealing cover by epoxy resin.

[0017] According to a second aspect of the present invention, there is provided a method for making a reference electrode for cement flooring as in the first aspect of the present invention. The method comprises the following steps:

[0018] Provide micro-perforated chassis;

[0019] Providing a sponge cover, and covering the lower part of the microporous bottom plate with the sponge cover for direct contact with the cement floor;

[0020] Providing a solution tube, and sleeved the solution tube on the convex column to form a cavity for containing a saturated copper sulfate solution with the convex column;

[0021] When a reference electrode is required, a saturated copper sulfate solution is placed in the chamber;

[0022] Providing a sealing cover adapted to the top of the solution tube for sealing the cavity;

[0023] A wire and an external lead are provided, one end of the wire is inserted into the saturated copper sulfate solution, and the other end of the wire is passed through the cover and connected to the external lead.

[0024] The beneficial effect of the present invention is that, compared with the prior art,

[0025] 1. By designing the reference electrode as a microporous chassis including a base and a convex column integrally formed, a sponge sleeve covering the lower part of the microporous chassis, and a solution tube sleeved on the central convex column of the microporous chassis, the saturated copper sulfate solution can penetrate from the convex column of the microporous chassis at the bottom of the solution tube into the base with a larger cross-sectional area, and directly penetrate into the cement surface through the sponge sleeve covering the bottom of the base. In this way, not only the contact area between the electrode and the ground is greatly increased, but also it can ensure that the cement surface is in contact with the saturated copper sulfate solution, which ensures the contact effect and will not affect the copper-saturated copper sulfate solution-cement surface primary battery system, so that the electrochemical potential of the cement and concrete surface can be correctly expressed, and the accuracy and reliability of the measurement results can be improved;

[0026] 2. By designing a ceramic microporous chassis with a pore size of less than 1 μm and a porosity greater than 75%, the solution penetration can be reduced while ensuring smooth flow of the solution, thereby extending the use time of the saturated copper sulfate solution.

[0027] 3. The ceramic microporous chassis is used as the electrode permeable liquid, which has good stability and durability;

[0028] 4. Use polyurethane foam sponge sleeve to fill the gap between the reference electrode and the ground to improve the contact effect;

[0029] 5. Use epoxy resin to encapsulate the electrode to protect the internal structure of the electrode and extend its service life;

[0030] 6. It can be widely used in ground environments such as cement and concrete, and is suitable for electrochemical measurement and monitoring fields, such as soil corrosion monitoring, stray current monitoring, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of a reference electrode used for cement floor in one embodiment of the present invention.

[0032] Description of reference numerals: 1. external lead wire; 2. cover; 3. wire; 4. saturated copper sulfate solution; 5. solution tube; 6. microporous bottom plate; 7. sponge cover DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] According to a first aspect of the present invention, there is provided a reference electrode for a cement floor.

[0036] like Figure 1 In one embodiment, the reference electrode for cement floor of the present invention comprises an external lead 1, a cover 2, a wire 3, a solution tube 5, a microporous bottom plate 6 and a sponge cover 7.

[0037] The microporous chassis 6 includes an integrally formed base and a boss. The boss is located at the center of the base and extends upward perpendicular to the base. The sponge sleeve 7 covers the bottom and side surfaces of the microporous chassis for direct contact with the cement floor. The solution tube 5 is sleeved on the boss and forms a cavity with the boss for containing a saturated copper sulfate solution 4. The cover 2 is arranged on the top of the solution tube 5 for sealing the cavity. One end of the wire 3 is inserted into the saturated copper sulfate solution 4, and the other end passes through the cover 2 and is connected to the external lead 1.

[0038] The saturated copper sulfate solution 4 can be prepared by adding water to copper sulfate crystals before the reference electrode is used for measurement, and provided to the cavity. In addition, the base and the protrusion in the microporous bottom plate 6 are preferably integrally formed.

[0039] By designing the reference electrode to include a microporous chassis 6 integrally formed with a base and a convex column, a sponge cover 7 covering the lower part of the microporous chassis, and a solution tube 5 sleeved on the central convex column of the microporous chassis, the saturated copper sulfate solution 4 can penetrate from the convex column of the microporous chassis 6 at the bottom of the solution tube to the base with a larger cross-sectional area, and directly penetrate to the cement surface through the sponge cover 7 covering the bottom of the base. In this way, not only the contact area between the electrode and the ground is greatly increased, but also it can be ensured that the cement surface is in contact with a saturated copper sulfate solution, which ensures the contact effect, and will not affect the copper-saturated copper sulfate solution-cement surface galvanic cell system, so that the electrochemical potential of the cement and concrete surface can be correctly expressed, and the accuracy and reliability of the measurement results are improved.

[0040] Preferably, the microporous chassis 6 is a ceramic microporous chassis with a pore size of less than 1 μm and a porosity greater than 75%. The ceramic microporous chassis is used as the electrode permeable liquid, which has good stability and durability. At the same time, according to relevant experimental results, the ceramic microporous chassis with a pore size of less than 1 μm and a porosity greater than 75% can reduce the solution penetration while ensuring the smooth flow of the solution, so as to prolong the use time of the saturated copper sulfate solution.

[0041] Preferably, the sponge cover 7 is a polyurethane foam sponge cover. The polyurethane foam sponge cover is used to fill the gap between the reference electrode and the ground, which can improve the contact effect.

[0042] Preferably, the base is a circular base with a diameter of not less than 5 cm, thereby ensuring that the reference electrode has a sufficiently large contact area with the cement surface, improving the contact effect with the ground, and allowing the reference electrode to form a better electrical connection with the ground faster and better.

[0043] Preferably, the external lead 1 is a copper soft wire coated with an insulating material, and the conductive wire 3 is a copper wire and is welded to the external lead.

[0044] Preferably, the cover 2 is made of insulating material and is detachably connected to the solution tube 5 through a threaded seal. This detachable design allows for convenient replenishment of the saturated copper sulfate solution after it is exhausted.

[0045] Preferably, the solution tube 5 is made of a transparent insulating material to facilitate observation of the state of the solution in the solution tube.

[0046] Preferably, the wire 3 is a copper wire, one end of which is immersed in a saturated copper sulfate solution, and the other end passes through the cover 2 to be connected to the external lead 1, and is sealed and fixed to the cover 2. The advantage of using copper wire is that it has excellent electrical conductivity and is not easy to react with a saturated copper sulfate solution. In other embodiments, wires of other materials, such as silver wire, etc., can also be used, as long as they do not react with a saturated copper sulfate solution while conducting electricity.

[0047] Preferably, the upper part of the protrusion is sealed and fixed to the solution tube by epoxy resin; the wire 3 is sealed and fixed to the cover 2 by epoxy resin. The electrode is encapsulated by epoxy resin to protect the internal structure of the electrode and extend the service life.

[0048] According to a second aspect of the present invention, there is provided a method for making a reference electrode for cement flooring as in the first aspect of the present invention. In one embodiment, the method comprises the following steps:

[0049] Step 1, providing a microporous chassis; the microporous chassis comprises an integrally formed base and a convex column; the convex column is located at the center of the base and extends upward perpendicularly to the base;

[0050] Step 2, providing a sponge cover, and covering the lower part of the microporous bottom plate with the sponge cover for direct contact with the cement floor;

[0051] Step 3, providing a solution tube, and sleeve the solution tube on the convex column to form a cavity for containing the saturated copper sulfate solution with the convex column;

[0052] Step 4, when a reference electrode is needed, placing a saturated copper sulfate solution in the cavity;

[0053] Step 5, providing a cover adapted to the top of the solution tube for sealing the cavity;

[0054] Step 6, providing a wire and an external lead, inserting one end of the wire into the saturated copper sulfate solution, and connecting the other end of the wire to the external lead through the cover.

[0055] The beneficial effect of the present invention is that, compared with the prior art,

[0056] 1. By designing the reference electrode as a microporous chassis including a base and a convex column integrally formed, a sponge sleeve covering the lower part of the microporous chassis, and a solution tube sleeved on the central convex column of the microporous chassis, the saturated copper sulfate solution can penetrate from the convex column of the microporous chassis at the bottom of the solution tube into the base with a larger cross-sectional area, and directly penetrate into the cement surface through the sponge sleeve covering the bottom of the base. In this way, not only the contact area between the electrode and the ground is greatly increased, but also it can ensure that the cement surface is in contact with the saturated copper sulfate solution, which ensures the contact effect and will not affect the copper-saturated copper sulfate solution-cement surface primary battery system, so that the electrochemical potential of the cement and concrete surface can be correctly expressed, and the accuracy and reliability of the measurement results can be improved;

[0057] 2. By designing a ceramic microporous chassis with a pore size of less than 1 μm and a porosity greater than 75%, the solution penetration can be reduced while ensuring smooth flow of the solution, thereby extending the use time of the saturated copper sulfate solution.

[0058] 3. The ceramic microporous chassis is used as the electrode permeable liquid, which has good stability and durability;

[0059] 4. Use polyurethane foam sponge sleeve to fill the gap between the reference electrode and the ground to improve the contact effect;

[0060] 5. Use epoxy resin to encapsulate the electrode to protect the internal structure of the electrode and extend its service life;

[0061] 6. It can be widely used in ground environments such as cement and concrete, and is suitable for electrochemical measurement and monitoring fields, such as soil corrosion monitoring, stray current monitoring, etc.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A reference electrode for cement floor, characterized in that: It includes external lead wire, cover, conductor wire, saturated copper sulfate solution, solution tube, microporous bottom plate and sponge cover; The microporous chassis includes an integrally formed base and a convex column; the convex column is located at the center of the base and extends upward perpendicular to the base; the sponge sleeve covers the lower part of the microporous chassis for direct contact with the cement floor; the solution tube is sleeved on the convex column and forms a cavity with the convex column for containing a saturated copper sulfate solution; the cover is arranged on the top of the solution tube for sealing the cavity; one end of the wire is used to be inserted into the saturated copper sulfate solution, and the other end passes through the cover to be connected to the external lead.

2. The reference electrode for cement floor according to claim 1, characterized in that: The microporous bottom plate is a ceramic microporous bottom plate with a pore size of less than 1 μm and a porosity of more than 75%.

3. The reference electrode for contacting the ground according to claim 1, characterized in that: The sponge cover is a polyurethane foam sponge cover.

4. The reference electrode for cement floor according to claim 1, characterized in that: The cross-sections of the base and the boss are both circular, and the cross-section diameter of the boss is smaller than the cross-section diameter of the base; the base is a circular base with a diameter of not less than 5 cm.

5. The reference electrode for cement floor according to claim 1, characterized in that: The external lead is a copper soft wire coated with an insulating material, and the conducting wire is a copper wire and is welded and connected to the external lead.

6. The reference electrode for cement floor according to claim 1, characterized in that: The sealing cover is made of insulating material and is detachably connected to the solution tube through a threaded seal.

7. The reference electrode for cement floor according to claim 1, characterized in that: The solution tube is made of transparent insulating material.

8. The reference electrode for cement floor according to claim 1, characterized in that: The conducting wire is a copper wire, one end of which is immersed in a saturated copper sulfate solution, and the other end of which passes through the cover to be connected with an external lead and is sealed and fixed to the cover.

9. The reference electrode for cement floor according to claim 1, characterized in that: The upper part of the convex column is sealed and fixed to the solution tube by epoxy resin; the wire is sealed and fixed to the cover by epoxy resin.

10. A method for manufacturing a reference electrode for cement floor as claimed in any one of claims 1 to 9, characterized in that: The steps include: Provide micro-perforated chassis; Providing a sponge cover, and covering the lower part of the microporous bottom plate with the sponge cover for direct contact with the cement floor; Providing a solution tube, and sleeved the solution tube on the convex column to form a cavity for containing a saturated copper sulfate solution with the convex column; When a reference electrode is required, a saturated copper sulfate solution is placed in the chamber; Providing a sealing cover adapted to the top of the solution tube for sealing the cavity; A wire and an external lead are provided, one end of the wire is inserted into the saturated copper sulfate solution, and the other end of the wire is passed through the cover and connected to the external lead.

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