CN217561391U - Sodium ion detection device - Google Patents
Sodium ion detection device Download PDFInfo
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- CN217561391U CN217561391U CN202221022849.5U CN202221022849U CN217561391U CN 217561391 U CN217561391 U CN 217561391U CN 202221022849 U CN202221022849 U CN 202221022849U CN 217561391 U CN217561391 U CN 217561391U
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Abstract
The utility model belongs to the technical field of metal ion detection, and relates to a sodium ion detection device, which comprises a water sample cup, an alkaline solution tank, a flow cell and a transmitter; the flow cell is internally provided with a mixing cavity, an electrode cavity and a discharge cavity which are sequentially communicated; the water sample cup is respectively provided with a water sample inlet and a water sample outlet communicated with the water sample inlet; the mixing cavity is respectively communicated with the water sample outlet and the alkaline solution tank; the electrode cavity is electrically connected with the transmitter, and a temperature electrode, a sodium measuring electrode and a reference electrode which are electrically connected with the transmitter are respectively arranged in the electrode cavity; a siphon is arranged between the lye tank and the mixing cavity; one end of the siphon is arranged at the bottom in the alkaline solution tank, and the other end of the siphon is communicated with the bottom of the mixing cavity. The utility model has good alkalization effect and stable and accurate measuring result; meanwhile, the detection limit of the sodium ion concentration can reach the level of mu g/L, automatic monitoring is realized without manual intervention, the operation is simpler, and the cost is saved.
Description
Technical Field
The utility model belongs to the technical field of metal ion detects, a sodium ion detection device is related to.
Background
The sodium meter is one of the most key instruments in the chemical on-line instruments of the power plant, the chemical supervision level is improved, the quality of water vapor is strictly controlled, the corrosion and scaling of thermodynamic equipment can be prevented and slowed down, the safety of the equipment is improved, the service life is prolonged, and the economical efficiency of unit operation is improved.
In practical application, the online sodium meter is easily interfered by various factors, such as water leakage of a flow cell, breakage of a diffusion tube, electrode failure, water seepage of an electrode joint and the like, and measurement data is unstable due to the fact that the online sodium meter is complex in structure, multiple in pipelines, uncontrolled in flow, untimely in maintenance and the like. The existing sodium ions have the following problems in the detection process: (1) The sodium meter adopts a three-electrode measuring system, which comprises a sodium measuring electrode, a pH composite electrode and a temperature electrode, and the problems of the material of the domestic sodium electrode, the alkalization process and the like, so that the mu g/L level sodium ion concentration cannot be monitored; (2) The flow cannot be controlled, and the alkalization effect is obviously different along with different flows, so that the detection accuracy is influenced; (3) The existing detection modes are mostly manual operations, and are regularly sampled and checked by workers, so that the method cannot achieve real-time monitoring and costs a large amount of manpower and material resources.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems existing in the prior sodium ion detection, the utility model provides a sodium ion detection device, which has good alkalization effect and stable and accurate measurement result; meanwhile, the detection limit of the sodium ion concentration can reach the level of mu g/L, automatic monitoring is realized without manual intervention, the operation is simpler, and the cost is saved.
In order to realize the purpose, the utility model discloses a technical scheme is:
a sodium ion detection device comprises a water sample cup, an alkaline solution tank, a flow cell and a transmitter; the flow cell is internally provided with a mixing cavity, an electrode cavity and a discharge cavity which are sequentially communicated; the water sample cup is respectively provided with a water sample inlet and a water sample outlet communicated with the water sample inlet; the mixing cavity is respectively communicated with the water sample outlet and the alkaline solution tank; the electrode cavity is electrically connected with the transmitter.
Furthermore, a temperature electrode, a sodium measuring electrode and a reference electrode which are electrically connected with the transmitter are respectively arranged in the electrode cavity.
Further, a siphon is arranged between the lye tank and the mixing cavity; one end of the siphon is arranged at the bottom in the lye tank, and the other end of the siphon is communicated with the bottom of the mixing cavity.
Furthermore, the mixing cavity, the electrode cavity and the discharge cavity are arranged in parallel, and the top of the mixing cavity is communicated with the bottom of the electrode cavity; the top of the electrode cavity is communicated with the bottom of the discharge cavity.
Furthermore, the flow cell is provided with an exhaust hole positioned above the mixing cavity.
Further, a water sample overflow port is also arranged on the water sample cup; the water sample overflow port is respectively communicated with the water sample inlet, the water sample outlet and the discharge cavity.
Furthermore, the water sample overflow port is communicated with the discharge cavity through an overflow pipe.
Further, the sodium ion detection device also comprises a sample inlet pipe communicated with the water sample inlet.
Furthermore, a flow switch and a flowmeter are sequentially arranged on the sample inlet pipe along the sample inlet direction.
Furthermore, a filter screen is arranged on the sample inlet pipe; the filter screen is positioned at the front end of the flow switch.
The utility model has the advantages that:
1. the utility model discloses in, the design in hybrid chamber and electrode chamber for sample liquid realizes twice intensive mixing, and the mixture of water sample and alkali lye is more even stable, makes pH value more stable, and the alkalization effect of water sample is better, and the sodion content that records is more stable, accurate.
2. The utility model discloses through the siphon between alkalization jar and mixing chamber, consequently through introducing the siphon principle, can the quantity of accurate control alkalization agent, the device can detect the sodium ion concentration of mu g/L level, and the detection limit is low, and sodium ion's measuring range is wide.
3. The utility model provides an among the device, through using the siphon, simplified the device structure, make the joining procedure of alkalizer simple simultaneously, need not artificial intervention, realize sodium ion's automated inspection.
4. The device provided by the utility model, adopt the water sample cup that has the overflow mouth, the sample liquid volume that can the ration detected at every turn has guaranteed the alkalization effect, improves the accuracy of testing result.
Drawings
Fig. 1 is a schematic view of a sodium ion detection device provided by the present invention;
wherein:
1, a filter screen; 2-flow switch; 3, a flow meter; 4-water sample cup; 5-lye tank; 6-siphon; 7-flow-through cell; 8-a mixing chamber; 9-electrode cavity; 10-a discharge chamber; 11-a transmitter; 12-overflow pipe.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Examples
Referring to fig. 1, the sodium ion detecting apparatus provided in this embodiment includes a water sample cup 4, an alkaline solution tank 5, a flow cell 7, and a transducer 11.
In this embodiment, a mixing chamber 8, an electrode chamber 9 and a discharge chamber 10 which are sequentially communicated are respectively arranged in the flow cell 7; the mixing cavity 8, the electrode cavity 9 and the discharge cavity 10 are arranged in parallel, and the top of the mixing cavity 8 is communicated with the bottom of the electrode cavity 9; the top of the electrode chamber 9 communicates with the bottom of the discharge chamber 10. A communicating channel is formed among the mixing cavity 8, the electrode cavity 9 and the discharge cavity 10, and the connecting mode of the communicating channel is that the top end of the former cavity is connected to the bottom end of the next cavity.
In this embodiment, the flow cell 7 is further provided with an exhaust hole located above the mixing chamber for eliminating bubbles.
In this embodiment, a temperature electrode, a sodium measurement electrode and a reference electrode electrically connected to the transmitter 11 are respectively disposed in the electrode chamber 9.
In the embodiment, the water sample cup 4 is respectively provided with a water sample inlet and a water sample outlet communicated with the water sample inlet; the mixing cavity 8 is respectively communicated with the water sample outlet and the lye tank 5; electrode cavity 9 is electrically connected to transmitter 11. A water sample overflow port is also arranged on the water sample cup 4; the water sample overflow port is respectively communicated with the water sample inlet, the water sample outlet and the discharge cavity 10.
In this embodiment, the transmitter 11 is a commercially available device, and functions to convert various process parameters such as temperature, pressure, flow rate, liquid level, and composition into a unified standard signal in an automatic detection and adjustment system, and then transmit the unified standard signal to a regulator and an indication recorder for adjustment, indication, and recording.
Further, a siphon 6 is arranged between the lye tank 5 and the mixing chamber 8; one end of a siphon 6 is arranged at the bottom in the alkali liquor tank 5, the other end of the siphon 6 is communicated with the bottom of the mixing chamber 8, and the alkali liquor in the alkali liquor tank 5 is added from the bottom of the mixing chamber 8 by utilizing the siphon principle, so that the control of the volume of the alkali liquor is realized.
In this embodiment, the water sample overflow port is communicated with the discharge chamber 10 through the overflow pipe 12, and the water sample volume detected at each time can be quantitatively controlled through the water sample overflow port and the overflow pipe 12, so that the alkalization effect is improved, and the accuracy of the detection result is ensured.
In this embodiment, sodium ion detection device still includes the sampling pipe that is linked together with the water sample import, has set gradually flow switch 2 and flowmeter 3 along the direction of appearance on the sampling pipe, controls opening of the flow of appearance and flowmeter instrument and stops.
In this embodiment, the sample inlet pipe is further provided with a filter screen 1; the filter screen 1 is located the flow switch 2 front end, filters the impurity in the appearance of advancing, avoids its influence to instrument and testing result.
The sodium ion detection device that this embodiment provided, its detection principle is:
arranging an alkali liquor tank 5 in the detection device, placing an alkalizer (diisopropylamine solution) in the alkali liquor tank 5, and sucking the diisopropylamine solution in the alkali liquor tank 5 into the bottom of a mixing cavity 8 by utilizing the siphon principle of a siphon 6; meanwhile, a water sample is filtered by the filter screen 1, enters the water sample cup 4 from the water sample inlet according to a certain flow, is discharged into the discharge cavity 10 through the water sample overflow port and the overflow pipe 12, the volume of the water sample detected at each time is quantitatively controlled, then the water sample enters the top of the mixing cavity 8 from the water sample outlet, the water sample is mixed with the diisopropylamine solution entering the mixing cavity 8, the diisopropylamine solution is neutralized with hydrogen ions in the water sample to be detected, the hydrogen ion content is reduced, and the interference of the hydrogen ions on the sodium ions is eliminated (due to Na + And H + Ions with the valence of +1 can generate mutual interference), the content of hydroxide negative ions is improved, the detected water sample is alkaline, and the pH value is improved (the process is water sample alkalization); after a water sample is mixed and alkalized in the mixing cavity 8, the water sample enters the electrode cavity 9 from the top of the mixing cavity 8 and is mixed with the water sample at the bottom of the mixing cavity 8, the solution is more stable, the alkalization effect is better, at the moment, a temperature electrode, a sodium measuring electrode and a reference electrode are arranged in the electrode cavity 9, wherein the sodium measuring electrode and the reference electrode form a measuring electrode, the temperature electrode measures the temperature of the water sample to be measured, corresponding measured data are transmitted to the transmitter 11, and the water sample is obtained by combining the existing detection method of a sodium ion three-electrode systemThe sodium ion content in the sample and the electrode cavity enable the mixed liquid of water and diisopropylamine in the mixing cavity to be mixed for the second time, the pH value is more stable, and the measuring result is more accurate.
The utility model uses the siphon to replace the prior alkalization pump, has strong reliability, saves a large amount of installation space and simplifies the operation; the mixed liquid is mixed and exhausted in the mixing cavity, secondary mixing is carried out in the electrode cavity, so that the alkalization effect is better, the accuracy and the stability of the measuring result are improved, a flowmeter and a flow switch are installed on the water inlet pipe outlet, and the water inlet flow is controlled.
Claims (10)
1. A sodium ion detection device is characterized by comprising a water sample cup (4), an alkaline solution tank (5), a flow cell (7) and a transmitter (11); a mixing cavity (8), an electrode cavity (9) and a discharge cavity (10) which are communicated in sequence are respectively arranged in the flow cell (7); the water sample cup (4) is respectively provided with a water sample inlet and a water sample outlet communicated with the water sample inlet; the mixing cavity (8) is respectively communicated with the water sample outlet and the lye tank (5); the electrode cavity (9) is electrically connected with the transmitter (11).
2. The sodium ion detection device according to claim 1, wherein a temperature electrode, a sodium measurement electrode and a reference electrode are respectively arranged in the electrode cavity (9) and are electrically connected with the transmitter (11).
3. The sodium ion detection device according to claim 2, characterized in that a siphon (6) is provided between the lye tank (5) and the mixing chamber (8); one end of the siphon (6) is arranged at the bottom in the lye tank (5), and the other end of the siphon (6) is communicated with the bottom of the mixing cavity (8).
4. The sodium ion detection device according to claim 3, wherein the mixing chamber (8), the electrode chamber (9) and the discharge chamber (10) are arranged in parallel, and the top of the mixing chamber (8) is communicated with the bottom of the electrode chamber (9); the top of the electrode cavity (9) is communicated with the bottom of the discharge cavity (10).
5. The sodium ion detection device according to claim 4, wherein the flow cell (7) is provided with an air vent above the mixing chamber (8).
6. The sodium ion detection device according to claim 5, wherein the water sample cup (4) is further provided with a water sample overflow port; the water sample overflow port is respectively communicated with the water sample inlet, the water sample outlet and the discharge cavity (10).
7. The sodium ion detection device according to claim 6, wherein the water sample overflow port is communicated with the discharge chamber (10) through an overflow pipe (12).
8. The sodium ion detection device according to any one of claims 1 to 7, further comprising a sample inlet tube in communication with the water sample inlet.
9. The sodium ion detection device according to claim 8, wherein a flow switch (2) and a flow meter (3) are sequentially arranged on the sample inlet pipe along a sample inlet direction.
10. The sodium ion detection device according to claim 9, wherein the sampling tube is further provided with a filter screen (1); the filter screen (1) is positioned at the front end of the flow switch (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221022849.5U CN217561391U (en) | 2022-04-29 | 2022-04-29 | Sodium ion detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221022849.5U CN217561391U (en) | 2022-04-29 | 2022-04-29 | Sodium ion detection device |
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| CN217561391U true CN217561391U (en) | 2022-10-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114965588A (en) * | 2022-04-29 | 2022-08-30 | 华能国际电力股份有限公司 | Power station water sample trace sodium ion online measurement method and online measurement device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114965588A (en) * | 2022-04-29 | 2022-08-30 | 华能国际电力股份有限公司 | Power station water sample trace sodium ion online measurement method and online measurement device |
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