CN211402235U

CN211402235U - Reference electrode isolation adapter

Info

Publication number: CN211402235U
Application number: CN201922365100.5U
Authority: CN
Inventors: 崔怡英; 江俊
Original assignee: Guangzhou Shanghui Instrument Industry Intelligent Technology Co ltd
Current assignee: Guangzhou Shanghui Instrument Industry Intelligent Technology Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-01
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a reference electrode isolation adapter, which comprises a columnar insulating shell, wherein both ends of the insulating shell are respectively provided with a first joint used for being connected with a composite electrode and a second joint used for being connected with a measuring instrument; and a wire is arranged in the insulating shell, and two ends of the wire are respectively connected with the first joint and the second joint. The utility model provides an adapter is kept apart to reference electrode, its reference system that can shield by the combined electrode production keeps the stability in measuring electrical apparatus return circuit.

Description

Reference electrode isolation adapter

Technical Field

The utility model relates to a detect pH, redox and ion field in the solution, especially relate to a reference electrode keeps apart adapter.

Background

In the process of measuring pH, oxidation reduction and ions in the solution by using an electrode method, the indicating electrode and the reference electrode corresponding to the parameters form an electric appliance loop in the solution to be measured, and the concentration of the measured parameters is obtained through the generated potential.

The electrode method has the advantages of convenient and quick operation, no damage to a test solution system, and suitability for some samples which are not suitable for being analyzed by other methods, such as colored or turbid samples and the like. The matched instrument is simple and portable. The method is widely applied to flow monitoring, automatic detection, field or on-line monitoring and the like.

The composite electrode is formed by packaging an indicating electrode and a reference electrode into a whole, the central point of the indicating electrode and the BNC interface is connected to the central line of the coaxial cable, and the reference system and the shell of the BNC interface are connected to the shielding wire of the coaxial cable in a butt joint mode.

When the pH, the oxidation and the reduction are measured synchronously with multiple parameters of multiple ions, the pH and the oxidation and the reduction are usually composite electrodes, and the ions are corresponding indicating electrodes (also called single electrodes).

When the same solution is subjected to multi-parameter synchronous measurement, the sensor ends of the measurement electrodes with required parameters need to be placed into the same sample container at the same time, and the other ends of the measurement electrodes need to be connected to the interface of the corresponding channel of the measuring instrument. If the reference system of the plurality of composite electrodes is common to the instrument, a situation where a plurality of reference systems coexist is created, resulting in measurement errors. Such as: the pH composite electrode, the oxidation-reduction composite electrode and a plurality of ionic indicating electrodes exist in the same liquid. The indicating electrodes of the ions are related to a reference system of a pH composite electrode and a reference system of a redox composite electrode, corresponding electric appliance loops are difficult to stabilize, and the measurement result is seriously disturbed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an adapter is kept apart to reference electrode, its reference system that can shield by the combined electrode production keeps the stability in measuring electrical apparatus return circuit.

In order to achieve the purpose, the utility model provides a reference electrode isolation adapter, which comprises a columnar insulating shell, wherein both ends of the insulating shell are respectively provided with a first joint used for being connected with a composite electrode and a second joint used for being connected with a measuring instrument; and a wire is arranged in the insulating shell, and two ends of the wire are respectively connected with the first joint and the second joint.

As a further improvement of the utility model, the insulating housing is made of POM insulating material.

As a further improvement of the present invention, the wire is arranged along a straight line and is located on a central axis of the insulating housing; the first connector is a BNC plug, and the second connector is a BNC socket.

As a further improvement of the utility model, the utility model comprises a splicing sleeve, wherein the middle part of the splicing sleeve is provided with a through hole; the insulating shell penetrates through the through hole of the splicing sleeve; the outer side wall of the splicing sleeve is provided with a first splicing part and a second splicing part; the first splicing part on one splicing sleeve is connected with the second splicing part on the other splicing sleeve in a quick-release manner.

As a further improvement, the first splicing part is a raised splicing block, the second splicing part is a limit chute, and the splicing block is matched with the limit chute.

As a further improvement of the present invention, the splicing sleeve comprises a first sleeve body and a second sleeve body which are oppositely arranged; the buckling surfaces of the first sleeve body and the second sleeve body penetrate through the through hole; one end of the first sleeve body is connected with one end of the second sleeve body, and the other end of the first sleeve body is a free end.

As a further improvement of the present invention, the splice sleeve is provided with a first splice portion divided into two parts by the buckling surface, and the two parts of the first splice portion are the free ends of the first sleeve body and the second sleeve body respectively.

As a further improvement of the utility model, the splicing sleeve is a cylinder with a square cross section; the first splicing parts are arranged on two opposite parallel side walls of the splicing sleeve, and the second splicing parts are arranged on the other two opposite parallel side walls of the splicing sleeve.

As a further improvement of the present invention, the inner side of the through hole is provided with an elastic layer, and the elastic layer is provided with a plurality of annular protrusions along the axis thereof.

Advantageous effects

Compared with the prior art, the utility model discloses an adapter is kept apart to reference electrode's advantage does:

1. the reference electrode isolation adapter is provided with only one lead penetrating through two ends and is completely isolated from a reference system of the composite electrode and a grounding system of a measuring instrument, namely, a reference loop of the composite electrode is disconnected, and even if the reference loop and other electrodes are arranged in a vessel, the reference system of the electrode connected with the reference electrode isolation adapter cannot form an electric appliance loop, so that the condition of interference is avoided, and the stability of the electric appliance loop during measurement is maintained.

2. The multi-parameter measurement of the same solution by using a plurality of composite electrodes is realized, and the electrode configuration is simplified.

3. When the same liquid is measured synchronously in multiple parameters, the interference from a parallel reference system is eliminated, so that a plurality of ion indicating electrodes can share the same reference electrode, resources are maximally shared, and the space is minimally occupied.

4. The reference electrode isolation adapter is small in structure and convenient to switch.

5. Insulating casing passes the splice sleeve, and connects through the splice sleeve between two adjacent reference electrode isolation adapters, avoids a plurality of combined electrode to keep apart the adapter dispersion and be difficult to manage because of each reference electrode when using, can keep apart the serial number on the adapter at a plurality of reference electrodes that splice, conveniently seeks fast to in time keep apart the adapter to wherein individuation reference electrode and maintain. When in maintenance, the insulating shell is only required to be detached from the splicing sleeve.

6. Two adjacent splicing sleeves are spliced through the splicing block and the limiting sliding groove, and the splicing structure is simple and convenient to operate.

7. The first cover body and the second cover body of the splicing sleeve clamp the insulating shell in the middle of the insulating shell to realize fixation, and compared with the mode that the insulating shell is inserted into the through hole of the splicing sleeve to realize fixation, the mode that the insulating shell is clamped through the first cover body and the second cover body has small resistance when being assembled and disassembled, and the operation is more convenient and rapid.

8. The splice sleeve is the cylinder of transversal personally submitting the square, and a plurality of splice sleeve groups after the concatenation are convenient for place. And the first splicing part which is divided into two parts by the buckling surface on one splicing sleeve is matched with the limiting sliding groove on the other splicing sleeve, so that the first sleeve body and the second sleeve body on the splicing sleeve can be kept closed, the connection stability of the splicing sleeve and the insulating shell is ensured, meanwhile, a locking structure does not need to be arranged between the first sleeve body and the second sleeve body, the structural complexity of the splicing sleeve is reduced, and the cost is reduced.

The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of an insulating housing, a wire and a joint in example 1;

FIG. 2 is a top view of the splice enclosure of example 1;

FIG. 3 is a plan view of the reference electrode isolation adapter in example 1;

FIG. 4 is a view taken along line A-A of FIG. 3;

FIG. 5 is a top view of the splice enclosure of example 2;

FIG. 6 is a top view of the split joint of multiple reference electrode isolating adapters of example 2;

FIG. 7 is a top view of the splicing of multiple reference electrode isolating adapters of example 3.

Detailed Description

Embodiments of the present invention will now be described with reference to the accompanying drawings.

Example 1

The utility model discloses a specific embodiment is as shown in fig. 1 to fig. 4, a reference electrode keeps apart adapter, including being cylindrical insulating casing 1, insulating casing 1 both ends are equipped with respectively and are used for the first joint 2 of being connected with the combined electrode and are used for the second joint 3 of being connected with the measuring instrument. A lead 4 is arranged in the insulating shell 1, and two ends of the lead 4 are respectively connected with the first joint 2 and the second joint 3. In this embodiment, the insulating housing 1 is made of POM insulating material. In addition, the insulating shell 1 can also be made of polyvinyl chloride or epoxy phenolic glass cloth tubes.

The wires 4 are arranged in a straight line and are located on the central axis of the insulating housing 1. The first connector 2 is a BNC plug and the second connector 3 is a BNC socket. One end of the reference electrode isolation adapter is in butt joint with a center shaft lead of the composite electrode through the center line of the BNC plug, and the other end of the reference electrode isolation adapter is in butt joint with the center line of the BNC plug of the measuring instrument through the center line of the BNC socket.

The reference electrode isolation adapter further comprises a splicing sleeve 5, and a through hole 9 is formed in the middle of the splicing sleeve 5. The insulating shell 1 passes through the through hole 9 of the splicing sleeve 5. The outer side wall of the splicing sleeve 5 is provided with a first splicing part 6 and a second splicing part 7. The first splicing part 6 on one splicing sleeve 5 is connected with the second splicing part 7 on the other splicing sleeve 5 in a quick-release manner. In this embodiment, splice sleeve 5 formula structure as an organic whole, reference electrode keeps apart insulating casing 1 of adapter and is connected with splice sleeve 5 through the grafting mode.

The first splicing part 6 is a raised splicing block, the second splicing part 7 is a limiting sliding groove, and the splicing block is matched with the limiting sliding groove. In this embodiment, the cross sections of the insertion block and the limiting sliding groove are both in a dovetail structure. The inserting block and the limiting sliding groove are in interference fit.

The splice sleeve 5 is a cylinder with a square cross section. The first splicing parts 6 are arranged on two opposite parallel side walls of the splicing sleeve 5, and the second splicing parts 7 are arranged on the other two opposite parallel side walls of the splicing sleeve 5. Furthermore, the splice 5 may also be circular or other polygonal in cross-section.

The inner side of the through hole 9 is provided with an elastic layer 8, and a plurality of annular bulges are arranged on the elastic layer 8 along the axis of the elastic layer.

In a multiparameter measurement system, multiple sensors are immersed in the same solution being measured. The sensor has the same working principle, such as pH composite electrode, redox composite electrode, and ion selective single electrode. Since each composite electrode is provided with a reference system, a plurality of reference systems exist in the same solution, and measurement signals are unstable. At this point, the reference system of the redox composite electrode (which is turned into a single electrode) is shielded by using the present adapter, so that the only reference system in the solution comes from the pH composite electrode, which establishes a stable electrical circuit with the redox electrode (single electrode) and the ion-selective single electrode, respectively. After the adapter is connected with the sensor, only one lead 4 is butted with the working electrode/anode of the sensor, the electric signal is smoothly transmitted to the measuring instrument, and the reference system/cathode/ground of the sensor meets the insulating shell 1 and is shielded.

Example 2

As shown in fig. 5 and 6, the difference from the embodiment 1 is that the splice case 5 includes a first case 51 and a second case 52 which are arranged oppositely. The fastening surface 53 of both the first sleeve 51 and the second sleeve 52 passes through the through hole 9. The first sleeve 51 and the second sleeve 52 are connected at one end and are free at the other end. When the first sleeve body 51 and the second sleeve body 52 are made of elastic insulating materials such as rubber, the buckling surface 53 is obtained by cutting on the splicing sleeve 5; when the first sheath 51 and the second sheath 52 are made of hard insulating materials, one ends of the two are hinged with each other.

In this embodiment, the splicing sleeve 5 is a cylinder with a square cross section. The splice sleeve 5 is provided with a first splice part 6 divided into two parts by the fastening surface 53, and the two parts of the first splice part 6 are the free ends of the first sleeve 51 and the second sleeve 52 respectively. This first concatenation portion 6 can keep the closure of first cover body 51 and second cover body 52 on this splice cover 5 through cooperating with spacing spout 7 on another splice cover 5, ensures the steadiness that splice cover 5 and insulating casing 1 are connected, need not to set up the locking structure again simultaneously between first cover body 51 and second cover body 52, reduces the structural complexity of splice cover, reduce cost.

Example 3

As shown in FIG. 7, the difference from the embodiment 2 is that a first splicing part 6 and a second splicing part 7 are respectively arranged on two opposite edges of each splicing sleeve 5. The splicing sleeves 5 are arranged along a straight line and are suitable for multi-channel instrument panels with electrode joints arranged transversely.

The present invention has been described above with reference to the preferred embodiments, but the present invention is not limited to the above-disclosed embodiments, and various modifications, equivalent combinations, which are made according to the essence of the present invention, should be covered.

Claims

1. The reference electrode isolation adapter is characterized by comprising a columnar insulating shell (1), wherein a first connector (2) used for being connected with a composite electrode and a second connector (3) used for being connected with a measuring instrument are respectively arranged at two ends of the insulating shell (1); be equipped with wire (4) in insulating casing (1), the both ends of wire (4) are connected with first joint (2) and second joint (3) respectively.

2. A reference electrode isolation adaptor as claimed in claim 1, wherein said insulating housing (1) is of POM insulating material.

3. A reference electrode isolation adaptor according to claim 1 or 2, wherein the wires (4) are arranged in a straight line and located on the central axis of the insulating housing (1); the first connector (2) is a BNC plug, and the second connector (3) is a BNC socket.

4. A reference electrode isolation adapter according to claim 3, characterized by comprising a splicing sleeve (5), wherein a through hole (9) is arranged in the middle of the splicing sleeve (5); the insulation shell (1) penetrates through a through hole (9) of the splicing sleeve (5); the outer side wall of the splicing sleeve (5) is provided with a first splicing part (6) and a second splicing part (7); the first splicing part (6) on one splicing sleeve (5) is connected with the second splicing part (7) on the other splicing sleeve (5) in a quick-release manner.

5. The reference electrode isolation adapter of claim 4, wherein the first splicing part (6) is a raised insertion block, the second splicing part (7) is a limiting sliding groove, and the insertion block is matched with the limiting sliding groove.

6. A reference electrode isolation adaptor as claimed in claim 5, wherein the said splicing sleeve (5) comprises a first sleeve body (51) and a second sleeve body (52) arranged oppositely; the buckling surfaces (53) of the first sleeve body (51) and the second sleeve body (52) penetrate through the through hole (9); one end of the first sleeve body (51) is connected with one end of the second sleeve body (52), and the other end is a free end.

7. The reference electrode isolating adapter according to claim 6, wherein the splice (5) is provided with a first splice (6) divided into two parts by the buckling surface (53), and the two parts of the first splice (6) are the free ends of the first sleeve body (51) and the second sleeve body (52), respectively.

8. A reference electrode isolation adaptor as claimed in claim 4 or 7, wherein the said splicing sleeve (5) is a cylinder with a square cross-section; the first splicing parts (6) are arranged on two opposite parallel side walls of the splicing sleeve (5), and the second splicing parts (7) are arranged on the other two opposite parallel side walls of the splicing sleeve (5).

9. A reference electrode isolation adapter according to claim 4, characterized in that the inside of the through hole (9) is provided with an elastic layer (8), and the elastic layer (8) is provided with a plurality of annular protrusions along the axis thereof.