Reference electrode calibration box

Abstract

The utility model relates to the technical field of reference electrode calibration, in particular to a reference electrode calibration box which comprises a lower barrel body and an upper cover body used for sealing and covering an opening in the top end of the lower barrel body, and a voltage comparator chip and a power supply are arranged in the upper cover body; the upper end face of the upper cover body is provided with a display, the bottom of the upper cover body is provided with a reference electrode, the upper cover body is provided with a calibration channel, the voltage comparator chip is electrically connected with the display and the reference electrode respectively, and the upper cover body is provided with a connection contact electrically connected with the voltage comparator chip. The reference electrode calibration device is simple in structure, when the reference electrode needs to be calibrated, the reference electrode to be calibrated only needs to be inserted into the saturated copper sulfate solution from the calibration channel and the bottom end, the reference electrode to be calibrated is electrically connected with the connecting contact, and the voltage difference between the reference electrode to be calibrated and the reference electrode is compared through the voltage comparator chip, so that the reference electrode to be calibrated is calibrated. Therefore, the calibration of the reference electrode to be calibrated is realized, the operation is convenient, and the carrying is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of reference electrode calibration, in particular to a reference electrode calibration box. Background Art

[0002] At present, cathodic protection technology is used in oil pipelines to prevent corrosion. When testing cathodic protection parameters, portable reference electrodes are indispensable. During use, due to frequent use and environmental influences, the reference electrode installation and removal process may also cause equipment damage. According to the requirements of cathodic protection technology, technicians need to calibrate the reference electrode regularly to ensure the normal operation of the system. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a reference electrode calibration box with simple structure, convenient operation and portability.

[0004] The utility model solves the above-mentioned technical problems with a technical solution as follows: a reference electrode calibration box, comprising a lower barrel body and an upper cover body for sealing the top opening of the lower barrel body, the lower barrel body being filled with a saturated copper sulfate solution, a voltage comparator chip and a power supply being arranged in the upper cover body, the power supply being electrically connected to the voltage comparator chip for supplying power to the voltage comparator chip; a display being arranged on the upper end surface of the upper cover body, a reference electrode being arranged at the bottom of the lower barrel body inner cavity for inserting into the bottom of the lower barrel body inner cavity, a calibration channel being arranged on the upper cover body for inserting the calibration reference electrode into the lower part of the inner cavity of the lower barrel body, the voltage comparator chip being electrically connected to the display and the reference reference electrode respectively, and a connection contact being electrically connected to the voltage comparator chip being arranged on the upper cover body.

[0005] The beneficial effects of the utility model are as follows: the utility model has a simple structure. When the reference electrode needs to be calibrated, it is only necessary to insert the reference electrode to be calibrated from the calibration channel and the bottom end into a saturated copper sulfate solution, and electrically connect the reference electrode to be calibrated with the connection contact. The voltage difference between the reference electrode to be calibrated and the reference electrode to be calibrated is compared through a voltage comparator chip, so as to detect whether the reference electrode to be calibrated meets the requirements, thereby realizing the calibration of the reference electrode to be calibrated. The operation is convenient and easy to carry.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, a mounting groove is provided at the bottom end of the upper cover body, the voltage comparator chip and the power supply are both arranged in the mounting groove, the notch of the mounting groove is provided with a bottom plate for covering the mounting groove, the reference electrode is fixed on the bottom plate, and the calibration channel runs through the bottom plate.

[0008] The beneficial effect of adopting the above further scheme is: setting the installation groove and covering the installation groove with the bottom plate, on the one hand, facilitates the installation of the voltage comparator chip and the power supply, and on the other hand, isolates the voltage comparator chip and the power supply from the saturated copper sulfate solution to improve safety.

[0009] Furthermore, a calibration cylinder with its bottom end inserted into the lower inner cavity of the lower barrel body is fixedly provided on the upper cover body, and a calibration port connected to the top of the calibration cylinder is provided on the top of the upper cover body, and the inner cavity of the calibration cylinder forms the calibration channel.

[0010] The beneficial effect of adopting the above further scheme is that by providing a calibration cylinder, the reference electrode to be calibrated can be easily inserted into the saturated copper sulfate solution, and at the same time, the saturated copper sulfate solution brought out when the calibrated reference electrode is taken out can be avoided from contaminating the circuit and causing the risk of short circuit.

[0011] Furthermore, a connecting cylinder is provided at the calibration port, and the bottom end of the connecting cylinder is connected to the top end of the calibration cylinder.

[0012] Furthermore, the lower part of the connecting tube is connected to the upper part of the calibration tube, and a first limiting convex ring is provided on the outer wall of the connecting tube, and the first limiting convex ring presses against the upper end surface of the upper cover body, and a second limiting convex ring is provided on the outer wall of the calibration tube, and the second limiting convex ring presses against the lower end surface of the upper cover body.

[0013] The beneficial effect of adopting the above further solution is: the connection is carried out through the connecting tube and the calibration tube, and then the first limiting convex ring and the second limiting convex ring are used to limit the connection, so as to facilitate the installation of the connecting tube and the calibration tube.

[0014] Furthermore, the connecting tube is made of copper, and the connecting contacts are arranged on the connecting tube.

[0015] The beneficial effect of adopting the above further scheme is: the connecting tube is made of copper material as a connecting contact, the voltage comparator chip is connected to the connecting tube circuit, and when in use, after the reference electrode to be calibrated is placed in the calibration channel, the reference electrode to be calibrated is electrically connected to the connecting tube.

[0016] Furthermore, the connecting cylinder is snap-fitted or threadedly connected to the calibration cylinder.

[0017] The beneficial effect of adopting the above further solution is that it is easy to install and disassemble.

[0018] Furthermore, a cap for sealing the connecting tube is threadedly connected to the connecting tube.

[0019] The beneficial effect of adopting the above further solution is that the provision of the cover cap can prevent debris from entering the lower barrel body and causing contamination to the saturated copper sulfate solution when not in use.

[0020] Furthermore, the lower barrel body is threadedly connected to the upper cover body.

[0021] The beneficial effect of adopting the above further solution is that it is convenient to install and disassemble the lower cylinder and the upper cover.

[0022] Furthermore, a switch button for connecting or disconnecting the voltage comparator chip and the power supply is provided on the upper end surface of the upper cover body.

[0023] The beneficial effect of adopting the above further solution is that the setting of the switch button can disconnect the power supply when not in use, thereby saving electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Lower barrel body; 2. Upper cover body; 3. Voltage comparator chip; 4. Power supply; 5. Display; 6. Benchmark reference electrode; 7. Mounting groove; 8. Bottom plate; 9. Calibration cylinder; 10. Connecting cylinder; 11. First limiting convex ring; 12. Second limiting convex ring; 13. Cover cap; 14. Switch button. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] like Figure 1As shown, an embodiment of the utility model includes a lower barrel body 1 and an upper cover body 2 for sealing the top opening of the lower barrel body 1. In a specific embodiment, an internal thread is provided on the upper inner wall of the lower barrel body 1, and an external thread is provided on the lower outer wall of the upper cover body 2. The lower barrel body 1 and the upper cover body 2 are detachably connected by threads, which is convenient for installation and disassembly of the two. The lower barrel body 1 is filled with a saturated copper sulfate solution, and a voltage comparator chip 3 and a power supply 4 are provided in the upper cover body 2. The power supply 4 is electrically connected to the voltage comparator chip 3 to supply power to the voltage comparator chip 3; on the upper end surface of the upper cover body 2, a saturated copper sulfate solution is provided, and a voltage comparator chip 3 and a power supply 4 are provided. The power supply 4 is electrically connected to the voltage comparator chip 3 to supply power to the voltage comparator chip 3; on the upper end surface of the upper cover body 2, an internal thread is provided on the upper inner wall of the lower barrel body 1, and an external thread is provided on the lower outer wall of the upper cover body 2. A display 5 is provided, and a reference electrode 6 for inserting into the bottom of the inner cavity of the lower barrel body 1 is provided at the bottom of the upper cover body 2. A calibration channel is provided on the upper cover body 2 and penetrates the upper cover body 2 for inserting the calibration reference electrode into the lower part of the inner cavity of the lower barrel body 1. The voltage comparator chip 3 is electrically connected to the display 5 and the reference reference electrode 6 respectively. A switch button 14 for connecting or disconnecting the voltage comparator chip 3 and the power supply 4 is provided on the upper end surface of the upper cover body 2. The power supply 4 is disconnected when not in use to save power. The upper cover body 2 is provided with connection contacts electrically connected to the voltage comparator chip 3.

[0029] The bottom end of the upper cover body 2 is provided with a mounting groove 7, the voltage comparator chip 3 and the power supply 4 are both arranged in the mounting groove 7, the notch of the mounting groove 7 is provided with a bottom plate 8 for covering the mounting groove 7, specifically, the notch of the mounting groove 7 is provided with a step-like structure for limiting the bottom plate 8, the outer wall of the bottom plate 8 abuts against the inner wall of the mounting groove 7, the reference electrode 6 is fixed on the bottom plate 8, and the calibration channel passes through the bottom plate 8. The mounting groove 7 is provided and covered by the bottom plate 8, which, on the one hand, facilitates the installation of the voltage comparator chip 3 and the power supply 4, and on the other hand, isolates the voltage comparator chip 3 and the power supply 4 from the saturated copper sulfate solution to improve safety.

[0030] A calibration cylinder 9 is fixedly provided on the upper cover body 2, the bottom end of which is inserted into the lower part of the inner cavity of the lower barrel body 1. A calibration port is provided on the top of the upper cover body 2 and is connected to the top of the calibration cylinder 9. The inner cavity of the calibration cylinder 9 forms the calibration channel. By providing the calibration cylinder 9, it is convenient to insert the reference electrode to be calibrated into the saturated copper sulfate solution, and at the same time, it can avoid the saturated copper sulfate solution brought out when the calibrated reference electrode is taken out to contaminate the circuit and cause the risk of short circuit.

[0031] In an embodiment of the utility model, a connecting tube 10 is provided at the calibration port, the bottom end of the connecting tube 10 is communicated with the top end of the calibration tube 9, the lower part of the connecting tube 10 is connected with the upper part of the calibration tube 9, a first limiting convex ring 11 is provided on the outer wall of the connecting tube 10, the first limiting convex ring 11 presses against the upper end surface of the upper cover body 2, and a second limiting convex ring 12 is provided on the outer wall of the calibration tube 9, the second limiting convex ring 12 presses against the lower end surface of the upper cover body 2. Preferably, the connecting tube 10 is snap-fitted with the calibration tube 9 or connected by threads. The connecting tube 10 and the calibration tube 9 are connected, and then the first limiting convex ring 11 and the second limiting convex ring 12 are used to limit the connection, so as to facilitate the installation of the connecting tube 10 and the calibration tube 9. Since the connecting tube 10 and the calibration tube 9 clamp the upper cover body 2 and the bottom plate 8, there is no need to fix the bottom plate 8 to the groove wall of the mounting groove 7.

[0032] In an embodiment of the utility model, a cap 13 for sealing the connecting tube 10 is threadedly connected to the connecting tube 10. The setting of the cap 13 can prevent debris from entering the lower barrel 1 and contaminating the saturated copper sulfate solution when not in use.

[0033] In an embodiment of the utility model, the connecting tube 10 can be made of copper as a connecting contact, and the voltage comparator chip 3 is connected to the connecting tube 10 circuit. When in use, after the reference electrode to be calibrated is placed in the calibration channel, the reference electrode to be calibrated is electrically connected to the connecting tube 10.

[0034] The utility model has a simple structure. When the reference electrode needs to be calibrated, it is only necessary to insert the reference electrode to be calibrated from the calibration channel and the bottom end into a saturated copper sulfate solution, the solution surface submerges the liquid contact hole of the reference electrode to be calibrated by more than 20 mm, and the reference electrode to be calibrated is electrically connected to the connection contact, and the voltage difference between the reference electrode to be calibrated and the reference electrode 6 is compared through the voltage comparator chip 3, so as to detect whether the reference electrode to be calibrated meets the requirements, thereby realizing the calibration of the reference electrode to be calibrated, and the operation is convenient and easy to carry.

[0035] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like 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, and do not indicate or imply that the referred system or element 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.

[0036] In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] 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.

[0038] In the description of this specification, the description with reference to the terms "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 utility model. 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.

[0039] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reference electrode calibration box, characterized in that: The invention comprises a lower barrel (1) and an upper cover (2) for sealing the top opening of the lower barrel (1), wherein the lower barrel (1) is filled with a saturated copper sulfate solution, and a voltage comparator chip (3) and a power supply (4) are arranged in the upper cover (2), and the power supply (4) is electrically connected to the voltage comparator chip (3) for supplying power to the voltage comparator chip (3); a display (5) is arranged on the upper end surface of the upper cover (2), and a reference electrode (6) is arranged at the bottom of the upper cover (2) for inserting into the bottom of the inner cavity of the lower barrel (1); a calibration channel is arranged on the upper cover (2) for inserting a calibration reference electrode into the lower part of the inner cavity of the lower barrel (1), and the voltage comparator chip (3) is electrically connected to the display (5) and the reference electrode (6) respectively, and a connection contact electrically connected to the voltage comparator chip (3) is arranged on the upper cover (2).

2. A reference electrode calibration box according to claim 1, characterized in that: The bottom end of the upper cover body (2) is provided with a mounting groove (7), the voltage comparator chip (3) and the power supply (4) are both arranged in the mounting groove (7), the notch of the mounting groove (7) is provided with a bottom plate (8) for covering the mounting groove (7), the reference electrode (6) is fixed on the bottom plate (8), and the calibration channel runs through the bottom plate (8).

3. A reference electrode calibration box according to claim 1, characterized in that: A calibration cylinder (9) is fixedly provided on the upper cover body (2), the bottom end of which is inserted into the lower part of the inner cavity of the lower barrel body (1); a calibration port is provided on the top of the upper cover body (2) and is connected to the top end of the calibration cylinder (9); the inner cavity of the calibration cylinder (9) forms the calibration channel.

4. A reference electrode calibration box according to claim 3, characterized in that: A connecting tube (10) is provided at the calibration port, and the bottom end of the connecting tube (10) is connected to the top end of the calibration tube (9).

5. A reference electrode calibration box according to claim 4, characterized in that: The lower part of the connecting tube (10) is connected to the upper part of the calibration tube (9); a first limiting convex ring (11) is provided on the outer wall of the connecting tube (10); the first limiting convex ring (11) presses against the upper end surface of the upper cover body (2); a second limiting convex ring (12) is provided on the outer wall of the calibration tube (9); the second limiting convex ring (12) presses against the lower end surface of the upper cover body (2).

6. A reference electrode calibration box according to claim 4 or 5, characterized in that: The material of the connecting tube (10) is copper, and the connecting contact is arranged on the connecting tube (10).

7. A reference electrode calibration box according to claim 4 or 5, characterized in that: The connecting cylinder (10) is snap-fitted or threadedly connected to the calibration cylinder (9).

8. A reference electrode calibration box according to claim 4 or 5, characterized in that: A cap (13) for sealing the connecting tube (10) is threadedly connected to the connecting tube (10).

9. A reference electrode calibration box according to any one of claims 1 to 5, characterized in that: The lower barrel body (1) is threadedly connected to the upper cover body (2).

10. A reference electrode calibration box according to any one of claims 1 to 5, characterized in that: A switch button (14) for connecting or disconnecting the voltage comparator chip (3) and the power source (4) is provided on the upper end surface of the upper cover body (2).

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