CN216622249U - Measuring device for concentration of volatile solute in dilute aqueous solution - Google Patents

Abstract

The utility model discloses a measuring device for the concentration of volatile solute in dilute water solution, which aims to solve the technical problem that the existing electrochemical gas sensor absorbs water vapor in water and the electrolyte expands in volume to be damaged, and the technical scheme is as follows: the device comprises a measuring device, a waterproof outer wrapping film, a connecting pipe and a signal processor, wherein the measuring device is connected with the signal processor through the connecting pipe, the measuring device is electrically connected with the signal processor, an air inlet pipe and an air outlet pipe are arranged inside the connecting pipe, a diaphragm pump is arranged on the air inlet pipe, the lower end of the air inlet pipe is connected with a plug of the measuring device, the lower end of the air outlet pipe is connected with the air outlet pipe of the measuring device, and the waterproof outer wrapping film is wrapped on the outer sides of the measuring device and the connecting pipe. The outer side of the measuring device is wrapped with the waterproof outer wrapping film, so that the working environment is relatively dry, the exhaust pipe is arranged on the measuring device, excessive water vapor sucked in the measuring device can be discharged from the exhaust pipe in real time, and electrolyte in the measuring device cannot be damaged due to volume expansion of absorbed moisture, so that the service life is prolonged.

Description

Measuring device for concentration of volatile solute in dilute aqueous solution

Technical Field

The utility model relates to the technical field of solution concentration measurement, in particular to a measuring device for the concentration of volatile solute in dilute aqueous solution.

Background

Usually, a gas sensor can conveniently and efficiently measure the gas partial pressure of a volatile solute in some dilute solutions, a Henry constant at each temperature can be calculated by preparing a standard dilute solution, then an excel software is used for obtaining a formula of the Henry constant and the temperature through a trend line, then a singlechip is used for carrying out temperature compensation and formula operation and concentration display, and then the concentration of the volatile solute can be conveniently and efficiently displayed by measuring the gas partial pressure of the volatile solute in the dilute solutions at different temperatures.

However, the gas sensor is an electrochemical gas sensor, generally, the electrochemical gas sensor needs oxygen to work normally, and the electrolyte of the gas sensor in water absorbs water vapor and expands in volume, and when the electrolyte expands to the extent that the volume in the sensor cannot be accommodated, the electrolyte overflows to cause damage to the sensor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a measuring device for the concentration of a volatile solute in a dilute aqueous solution, so as to solve the technical problem.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a measuring device for be arranged in dilute solution of water volatility solute concentration, includes measuring device, waterproof outer envelope, connecting pipe and signal processor, measuring device passes through the connecting pipe with signal processor and is connected, the inside of connecting pipe is equipped with the wire, measuring device passes through wire electrical connection with signal processor, the inside of connecting pipe still is equipped with intake pipe and outlet duct, be equipped with the diaphragm pump in the intake pipe, the lower extreme and the end cap of measuring device of intake pipe are connected, the lower extreme and the blast pipe of measuring device of outlet duct are connected, waterproof outer envelope parcel is in the outside of measuring device and connecting pipe, measuring device is located below the liquid level.

Preferably, the measuring device comprises a shell, three electrode pins, a plug, a liquid storage box, a liquid storage tank liquid absorption material, an inner round cover, a waterproof breathable film ring sheet, a first electrode diaphragm, a counter electrode film, a second electrode diaphragm, a reference electrode film, a working electrode film, an upper cover and an outer round cover, wherein the three electrode pins are respectively a working electrode pin, a reference electrode pin and a counter electrode pin which are respectively inserted into electrode pin holes of the shell, an air inlet channel is arranged in the plug and inserted into a first air inlet hole of the shell, the liquid storage box is arranged in the shell, an exhaust pipe of the liquid storage box is inserted into an exhaust hole of the shell, the liquid storage tank liquid absorption material is arranged on a liquid absorption material support in the liquid storage box, the inner round cover is arranged on the inner wall of the top of the liquid storage box, the waterproof breathable film ring sheet is arranged on the top surface of the inner round cover, the first electrode diaphragm is arranged on the top surface of the waterproof breathable film ring piece, the counter electrode is arranged on the top surface of the first electrode diaphragm, the counter electrode film is arranged on the top surface of the counter electrode, the second electrode diaphragm is arranged on the top surface of the counter electrode film, the reference electrode is arranged on the top surface of the second electrode diaphragm, the reference electrode film is arranged on the top surface of the reference electrode, the working electrode is arranged on the top surface of the reference electrode film, the working electrode film is arranged on the top surface of the working electrode, the upper cover is arranged on the top surface of the working electrode film and is inserted into the top of the inner wall of the shell, and the outer round cover is arranged on the top surface of the upper cover;

the counter electrode pin is electrically connected with the counter electrode, the reference electrode pin is electrically connected with the reference electrode, the working electrode pin is electrically connected with the working electrode, and the working electrode pin, the reference electrode pin and the counter electrode pin are all electrically connected with the signal processor.

Preferably, the middle of the top surface of the shell is provided with a first air inlet, and the periphery of the top surface is uniformly provided with three electrode pin holes and three exhaust holes.

Preferably, an exhaust pipe is arranged on one side of the bottom of the liquid storage box, a second air inlet is formed in the middle of the bottom surface, liquid absorbing material supports are arranged on two sides of the second air inlet in the bottom surface of the liquid storage box, an air vent groove is formed in the bottom surface between the second air inlet and the exhaust pipe, a plurality of clamping blocks are evenly arranged on the inner side wall of the liquid storage box, the exhaust pipe is inserted into the exhaust hole, and the plug is inserted into the second air inlet.

Preferably, an O-ring is arranged between the upper cover and the housing.

Preferably, be equipped with first dustproof ventilated membrane between upper cover and the excircle lid, be equipped with the dustproof ventilated membrane of second on the top surface of excircle lid.

Preferably, the waterproof breathable film ring sheet and the counter electrode film are made of polytetrafluoroethylene.

The utility model has the beneficial effects that:

1. the measuring device is provided with the exhaust pipe, excessive water vapor sucked in the device can be discharged from the exhaust pipe in real time, the electrolyte in the measuring device cannot expand and overflow to cause damage, and the service life is prolonged;

2. when the device works below the liquid level, the outer part of the device is coated with the waterproof outer wrapping film, so that the working environment is relatively dry, and the influence of liquid on a circuit part in a measuring device is effectively prevented;

3. the measuring device is made of polytetrafluoroethylene materials, so that liquid molecules can be effectively prevented from entering the measuring device, and the device is effectively prevented from being damaged by the liquid molecules;

4. the utility model is externally connected with a diaphragm pump, and when in use, air is introduced inwards to form circulation to take out water vapor, so that the inside of the device is kept dry.

Drawings

FIG. 1 is a schematic diagram of the general structure of the present invention;

FIG. 2 is a schematic view of a measuring device according to the present invention;

FIG. 3 is a schematic front view of the structure of FIG. 2;

FIG. 4 is a schematic cross-sectional view of section A-A of FIG. 3;

FIG. 5 is an exploded view of the measuring device of the present invention;

FIG. 6 is a schematic structural diagram of a housing of the measuring device of the present invention;

FIG. 7 is a schematic front view of the structure of FIG. 6;

FIG. 8 is a schematic view of the bottom structure of a liquid storage box of the measuring device of the present invention;

FIG. 9 is a schematic view of the internal structure of a liquid storage box of the measuring device of the present invention;

FIG. 10 is a schematic top view of the structure of FIG. 9;

FIG. 11 is a schematic view of the structure of the upper cover of the measuring device of the present invention;

reference numerals: 1. a measuring device; 2. a liquid level; 3. a waterproof outer wrapping film; 4. a connecting pipe; 5. A signal processor; 6. a housing; 7. an electrode pin; 8. a plug; 9. a liquid storage box; 10. a reservoir wicking material; 11. an inner dome; 12. a waterproof breathable film ring sheet; 13. a first electrode separator; 14. a counter electrode; 15. a counter electrode film; 16. a second electrode separator; 17. a reference electrode; 18. a reference electrode film; 19. a working electrode; 20. a working electrode film; 21. an O-shaped ring; 22. An upper cover; 23. a first dust-proof air-permeable membrane; 24. an outer dome; 25. a second dust-proof breathable film; 26. An air outlet pipe; 27. an air inlet pipe; 28. a diaphragm pump;

6.1, electrode pin holes; 6.2, a first air inlet hole; 6.3, an exhaust hole; 7.1, working electrode pins; 7.2, reference electrode pins; 7.3, a counter electrode pin; 9.1, an exhaust pipe; 9.2, a second air inlet hole; 9.3, a liquid absorbing material bracket; 9.4, a vent groove; 9.5, clamping blocks.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Other embodiments obtained by persons skilled in the art without making creative efforts based on the embodiments in the implementation belong to the protection scope of the utility model.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

As shown in fig. 1-11, a measuring device for concentration of volatile solute in dilute aqueous solution, comprising a measuring device 1, a waterproof outer coating film 3, a connecting pipe 4 and a signal processor 5, wherein the measuring device 1 is connected with the signal processor 5 through the connecting pipe 4, a wire is arranged inside the connecting pipe 4, the measuring device 1 is electrically connected with the signal processor 5 through the wire, an air inlet pipe 27 and an air outlet pipe 26 are further arranged inside the connecting pipe 4, a diaphragm pump 28 is arranged on the air inlet pipe 27, the lower end of the air inlet pipe 27 is connected with a plug 8 of the measuring device 1, the lower end of the air outlet pipe 26 is connected with an exhaust pipe 9.1 of the measuring device 1, the waterproof outer coating film 3 is wrapped outside the measuring device 1 and the connecting pipe 4, and the measuring device 1 is located below the liquid level 2.

The measuring device 1 comprises a shell 6, three electrode pins 7, a plug 8, a liquid storage box 9, a liquid storage tank liquid absorption material 10, an inner circle cover 11, a waterproof breathable film ring 12, a first electrode diaphragm 13, a counter electrode 14, a counter electrode film 15, a second electrode diaphragm 16, a reference electrode 17, a reference electrode film 18, a working electrode 19, a working electrode film 20, an upper cover 22 and an outer circle cover 24, wherein the three electrode pins 7 are respectively a working electrode pin 7.1, a reference electrode pin 7.2 and a counter electrode pin 7.3 which are respectively inserted into electrode pin holes 6.1 of the shell 6, a first air inlet hole 6.2 is arranged in the middle of the top surface of the shell 6, three electrode pin holes 6.1 and an air outlet hole 6.3 are uniformly arranged on the periphery of the top surface, an air inlet channel is arranged in the plug 8 and is inserted into the first air inlet hole 6.2 of the shell 6, the liquid storage box 9 is arranged in the shell 6, and an exhaust pipe 9.1 of the liquid storage box 9 is inserted into the air outlet hole 6.3 of the shell 6, the liquid storage tank liquid absorbing material 10 is arranged on a liquid absorbing material support 9.3 in the liquid storage box 9, the inner round cover 11 is arranged on the inner wall of the top of the liquid storage box 9, the waterproof breathable film ring sheet 12 is a polytetrafluoroethylene film and is arranged on the top surface of the inner round cover 11, the first electrode diaphragm 13 is arranged on the top surface of the waterproof breathable film ring sheet 12, the counter electrode 14 is arranged on the top surface of the first electrode diaphragm 13, the counter electrode film 15 is a polytetrafluoroethylene film and is arranged on the top surface of the counter electrode 14, the second electrode diaphragm 16 is arranged on the top surface of the counter electrode film 15, the reference electrode 17 is arranged on the top surface of the second electrode diaphragm 16, the reference electrode film 18 is arranged on the top surface of the reference electrode 17, the working electrode film 19 is arranged on the top surface of the reference electrode film 18, the working electrode film 20 is arranged on the top surface of the working electrode film 19, and the upper cover 22 is arranged on the top surface of the working electrode film 20, and insert 6 inner wall tops of shell, outer dome 24 sets up the top surface at upper cover 22, be equipped with O type circle 21 between upper cover 22 and the shell 6, counter electrode pin 7.3 and 14 electrical connections of counter electrode, reference electrode pin 7.2 and reference electrode 17 electrical connection, working electrode pin 7.1 and working electrode 19 electrical connection, working electrode pin 7.1, reference electrode pin 7.2 and counter electrode pin 7.3 all with signal processor 5 electrical connection, be equipped with first dustproof ventilated membrane 23 between upper cover 22 and the outer dome 24, be equipped with the dustproof ventilated membrane 25 of second on the top surface of outer dome 24.

The liquid storage box is characterized in that an exhaust pipe 9.1 is arranged on one side of the bottom of the liquid storage box 9, a second air inlet 9.2 is formed in the middle of the bottom surface, liquid absorbing material supports 9.3 are arranged on two sides of the second air inlet 9.2 in the bottom surface of the liquid storage box 9, an air vent groove 9.4 is formed in the bottom surface between the second air inlet 9.2 and the exhaust pipe 9.1, a plurality of clamping blocks 9.5 are evenly arranged on the inner side wall of the liquid storage box 9, the exhaust pipe 9.1 is inserted into an exhaust hole 6.3, and a plug 8 is inserted into the second air inlet 9.2.

When the device is used, the measuring device 1 and the connecting pipe 4 are externally wrapped by the waterproof outer wrapping film 3, the measuring device 1 is placed below the liquid level 2, the diaphragm pump 28 is started, air rich in oxygen is introduced into the measuring device 1 through the connecting pipe 4, the air enters the liquid storage box 9 through the air inlet channel in the plug 8 and then is discharged from the exhaust pipe 9.1, circulation is formed in the measuring device 1, water in the measuring device 1 is taken out, the drying effect is achieved, in the process, volatile molecules and water molecules in the liquid can penetrate through the waterproof outer wrapping film 3 to enter the measuring device 1, solute molecules entering the measuring device 1 penetrate through the first dustproof breathable film 23 and the second dustproof breathable film 25 to react on electrochemical substances on the working electrode film 20, electrons of the generated chemical substances are lost, current is formed, and the current is transmitted to the signal processor 5 through an external circuit, show the change of concentration value to survey the concentration of volatile solute in the water weak solution, the hydrone is then discharged from blast pipe 9.1, thereby avoid measuring device 1 to work for a long time below the liquid level 2 and suffer the damage because of absorbing the expansion of vapor volume, realize long-term on-line monitoring, in the measurement process, waterproof ventilated membrane ring piece 12, to electrode membrane 15 etc. make by polytetrafluoroethylene material, this material can prevent the liquid molecule through gas molecule, the effectual interior electrolyte of preventing the reservoir flows out and produces the destruction to the circuit.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The measuring device for the concentration of volatile solutes in dilute aqueous solution is characterized by comprising a measuring device (1), a waterproof outer coating film (3), a connecting pipe (4) and a signal processor (5), wherein the measuring device (1) is connected with the signal processor (5) through the connecting pipe (4), a wire is arranged inside the connecting pipe (4), the measuring device (1) is electrically connected with the signal processor (5) through the wire, an air inlet pipe (27) and an air outlet pipe (26) are further arranged inside the connecting pipe (4), a diaphragm pump (28) is arranged on the air inlet pipe (27), the lower end of the air inlet pipe (27) is connected with a plug (8) of the measuring device (1), the lower end of the air outlet pipe (26) is connected with an exhaust pipe (9.1) of the measuring device (1), the waterproof outer coating film (3) is wrapped outside the measuring device (1) and the connecting pipe (4), the measuring device (1) is located below the liquid level (2).

2. The measuring device for the concentration of volatile solutes in a dilute aqueous solution according to claim 1, wherein the measuring device (1) comprises a housing (6), three electrode pins (7), a plug (8), a reservoir (9), a reservoir material (10), an inner circular cover (11), a waterproof breathable membrane ring (12), a first electrode membrane (13), a counter electrode (14), a counter electrode membrane (15), a second electrode membrane (16), a reference electrode (17), a reference electrode membrane (18), a working electrode (19), a working electrode membrane (20), an upper cover (22) and an outer circular cover (24), wherein the three electrode pins (7) are respectively a working electrode pin (7.1), a reference electrode pin (7.2) and a counter electrode pin (7.3) which are respectively inserted into electrode pin holes (6.1) of the housing (6), and an air inlet channel is arranged in the plug (8), inserted into a first air inlet hole (6.2) of the shell (6), the liquid storage box (9) is arranged in the shell (6), an exhaust pipe (9.1) of the liquid storage box (9) is inserted into an exhaust hole (6.3) of the shell (6), the liquid storage box liquid absorption material (10) is arranged on a liquid absorption material support (9.3) in the liquid storage box (9), the inner round cover (11) is arranged on the inner wall of the top of the liquid storage box (9), the waterproof breathable film ring sheet (12) is arranged on the top surface of the inner round cover (11), the first electrode diaphragm (13) is arranged on the top surface of the waterproof breathable film ring sheet (12), the counter electrode (14) is arranged on the top surface of the first electrode diaphragm (13), the counter electrode film (15) is arranged on the top surface of the counter electrode film (14), the second electrode diaphragm (16) is arranged on the top surface of the counter electrode film (15), and the reference electrode (17) is arranged on the top surface of the second electrode diaphragm (16), the reference electrode film (18) is arranged on the top surface of the reference electrode (17), the working electrode (19) is arranged on the top surface of the reference electrode film (18), the working electrode film (20) is arranged on the top surface of the working electrode (19), the upper cover (22) is arranged on the top surface of the working electrode film (20) and inserted into the top of the inner wall of the shell (6), and the outer circular cover (24) is arranged on the top surface of the upper cover (22);

the counter electrode pin (7.3) is electrically connected with the counter electrode (14), the reference electrode pin (7.2) is electrically connected with the reference electrode (17), the working electrode pin (7.1) is electrically connected with the working electrode (19), and the working electrode pin (7.1), the reference electrode pin (7.2) and the counter electrode pin (7.3) are electrically connected with the signal processor (5).

3. The device for measuring the concentration of the volatile solute in the dilute aqueous solution according to claim 2, wherein a first air inlet hole (6.2) is formed in the middle of the top surface of the housing (6), and three electrode pin holes (6.1) and three air outlet holes (6.3) are uniformly formed around the top surface.

4. The device for measuring the concentration of the volatile solute in the dilute aqueous solution according to claim 2, wherein an exhaust pipe (9.1) is arranged at one side of the bottom of the liquid storage box (9), a second air inlet hole (9.2) is formed in the middle of the bottom, liquid absorbing material supports (9.3) are arranged at two sides of the second air inlet hole (9.2) in the bottom of the liquid storage box (9), an air vent groove (9.4) is formed in the bottom between the second air inlet hole (9.2) and the exhaust pipe (9.1), a plurality of clamping blocks (9.5) are uniformly arranged on the inner side wall of the liquid storage box (9), the exhaust pipe (9.1) is inserted into the exhaust hole (6.3), and the plug (8) is inserted into the second air inlet hole (9.2).

5. A device for measuring the concentration of volatile solutes in a dilute aqueous solution according to claim 2, characterized in that an O-ring (21) is provided between the upper cover (22) and the housing (6).

6. The device for measuring the concentration of volatile solutes in a dilute aqueous solution according to claim 2, wherein a first dust and air permeable membrane (23) is arranged between said upper cover (22) and said outer circular cover (24), and a second dust and air permeable membrane (25) is arranged on the top surface of said outer circular cover (24).

7. The device for measuring the concentration of volatile solutes in a dilute aqueous solution according to any one of claims 2 to 6, wherein said water-proof gas-permeable membrane ring sheet (12) and counter electrode membrane (15) are made of polytetrafluoroethylene.

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