CN211292685U - Multi-parameter water quality measuring system - Google Patents
Multi-parameter water quality measuring system Download PDFInfo
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- CN211292685U CN211292685U CN201921509247.0U CN201921509247U CN211292685U CN 211292685 U CN211292685 U CN 211292685U CN 201921509247 U CN201921509247 U CN 201921509247U CN 211292685 U CN211292685 U CN 211292685U
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Abstract
The utility model discloses a multi-parameter water quality measuring system, including data processor, water sample pipeline, drainage pipe, be arranged in getting rid of the electric regeneration cation exchanger of cation in the water sample and be used for providing the power of electric energy, be provided with the first conductivity sensor who is used for detecting the water sample conductivity on the water sample pipeline, the export of first conductivity sensor is linked together with the water sample entry of electric regeneration cation exchanger, the export of electric regeneration cation exchanger water sample communicates with second conductivity sensor's entry, second electricity is electricThe outlet of the conductivity sensor is communicated with the inlet of the electrolyzed water passage of the electric regeneration cation exchanger, and the outlet of the electrolyzed water passage of the electric regeneration cation exchanger is communicated with the drainage pipeline. The system can simultaneously and accurately measure the pH value and NH of the water sample4 +Electrical conductivity and hydrogen conductivity.
Description
Technical Field
The utility model belongs to the water quality testing field relates to a multi-parameter water quality measuring system.
Background
Electrical conductivity, hydrogen conductivity, NH4 +Indexes such as pH and the like are important indexes for monitoring water (steam) of a power plant, usually, the conductivity, the hydrogen conductivity and the pH are respectively measured by an online meter, and three water samples, namely NH (hydrogen) and water sample4 +The test was performed periodically with laboratory instruments.
However, in practical application, the ion exchange column is used for removing cations in hydrogen conductivity measurement, the resin needs to be replaced in time, the replaced resin is not regenerated completely or washed clean, and the released trace impurity ions can cause positive errors; the cation exchange resin can release low molecular polymer impurities, so that the background conductivity is increased, and the hydrogen conductivity measurement is inaccurate; the measuring device is bulky; replacement of the resin when it fails is cumbersome and time consuming, resulting in measurements that cannot be taken continuously. These problems lead to inaccurate hydrogen conductivity measurements and do not allow for continuous measurements in a true sense.
The pH value is measured by using an online pH meter, and when the pH value is measured online, measurement errors can be caused by temperature change, flow velocity, secondary meter design and the like, so that the pH value is measured inaccurately.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a multi-parameter water quality measuring system, the NH of pH value, water sample that this system can the accurate measurement water sample4 +Concentration, conductivity of the water sample and hydrogen conductivity of the water sample.
In order to achieve the above purpose, the multi-parameter water quality measuring system of the utility model comprises a data processor and a water sample conveying pipeline, the device comprises a drainage pipeline, an electric regeneration cation exchanger for removing cations in a water sample and a power supply for supplying electric energy, wherein a first conductivity sensor for detecting the conductivity of the water sample and a second conductivity sensor for detecting the hydrogen conductivity of the water sample are arranged on a water sample conveying pipeline, the water sample conveying pipeline is communicated with an inlet of the first conductivity sensor, an outlet of the first conductivity sensor is communicated with a water sample inlet of the electric regeneration cation exchanger, a water sample outlet of the electric regeneration cation exchanger is communicated with an inlet of the second conductivity sensor, an outlet of the second conductivity sensor is communicated with an electrolytic water passage inlet of the electric regeneration cation exchanger, and an electrolytic water passage outlet of the electric regeneration cation exchanger is communicated with the drainage pipeline.
The power supply is a lithium battery (portable meter) or a 220V power supply (on-line meter).
The utility model discloses following beneficial effect has:
multiparameter water quality measurement system when concrete operation, through the conductivity of first conductivity sensor measurement water sample, positive ion in the water sample is got rid of to rethread electric regeneration cation exchanger, then measures the hydrogen conductivity of water through second conductivity sensor to the pH value of water sample and the NH of water sample are calculated to conductivity, hydrogen conductivity according to the water sample4 +Concentration, convenient and simple operation and higher accuracy, and simultaneously, the original four water samples can be respectively measured for the conductivity, the hydrogen conductivity and the NH by measuring one water sample4 +And the pH value, energy conservation, environmental protection, stable performance and convenient operation.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Wherein, 1 is a first conductivity sensor, 2 is an electrically regenerated cation exchanger, 3 is a second conductivity sensor, and 4 is a data processor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the on-line multi-parameter water quality measuring system of the present invention comprises a first conductivity sensor 1, wherein a water sample in the measuring system measures conductivity through the first conductivity sensor 1, the water sample having measured the conductivity enters an electrically regenerated cation exchanger 2 connected to the first conductivity sensor 1 to remove cations, and then the hydrogen conductivity of the water sample is measured through a second conductivity sensor 3 connected to an outlet of the electrically regenerated cation exchanger 2; the discharged water of the second conductivity sensor 3 is electrolyzed in the electrolyzed water passage of the electrically regenerated cation exchanger 2, and H produced by the electrolyzed water+The cation resin filled in the electrically regenerated cation exchanger 2 is regenerated in real time and discharged. The conductivity and hydrogen conductivity signals detected by the first conductivity sensor 1 and the second conductivity sensor 3 are directly input into the data processor 4 for display, and simultaneously the pH value of the water sample and the NH of the water sample are calculated through the conductivity and the hydrogen conductivity4 +And (4) concentration, and output and display are carried out.
The electrically regenerated cation exchanger 2 electrolyzes water therein using a constant current to produce H+Regenerating the cation resin in real time; measurement system can regard as portable table also can regard as online table, to portable instrument, provide the electric energy through the lithium cell and give first conductivity sensor 1, second conductivity sensor 3 and electricity regeneration cation exchanger 2, to online instrument, external 220V power supplies for the system power supply.
It should be noted that, the utility model discloses a measure water sample all the way, can accomplish original four ways water sample and measure electric conductivity, hydrogen conductivity, NH of water respectively4 +And the pH value, energy conservation, environmental protection, stable performance and convenient operation.
The utility model discloses well through electricity regenerationCation exchanger 2 for removing cations from a sample water, cation exchange resin packed therein, and constant current electrolysis of water to produce H+And (5) real-time regeneration. NH in water vapor of power plant4 +The highest content, the utility model uses NH4 +Experiments are carried out to examine the removal rate of the cations by the electrically regenerated cation exchanger 2, and specific experimental data are shown in table 1.
TABLE 1
The electric regeneration cation exchanger 2 can effectively remove cations in water vapor, and meanwhile, cation exchange resin in the electric regeneration cation exchanger is not dissolved out in the exchange process, so that the measuring result is more accurate and reliable, and the utility model discloses see table 2 with the comparison of conventional hydrogen electricity guide pillar effluent anion measuring result.
TABLE 2
As can be seen from Table 2, the conventional cation exchange column used for measuring the hydrogen conductivity in the power plant is filled with a large amount of resin, and the outlet water of pure water passing through the exchange column contains a small amount of formate, acetate and sulfate, so that the measurement result has certain deviation from the actual measurement value; the electric regeneration cation exchanger 2 is filled with a very small amount of cation exchange resin, the effluent of the cation exchange resin is the same as the anion content of the inlet water, and the cations are all converted into H in the process+No dissolution was measured in the effluent. It is shown that the electrically regenerated cation exchanger 2 can effectively remove cations in water without bringing the effluent into the eluate.
The utility model discloses the comparison data of the pH value that calculates according to conductivity and hydrogen conductivity and standard table see table 3.
TABLE 3
Compared with the conventional detection method, the utility model, have following technical characterstic:
1) the conventional exchange column is replaced by the electrically regenerated cation exchanger 2 for measuring the hydrogen conductivity, so that the measurement accuracy of the hydrogen conductivity is improved, the continuous measurement of the hydrogen conductivity is truly realized, and the device is energy-saving and environment-friendly.
2) The electrically regenerated cation exchanger 2 ensures effective removal of cations from the water without any leachables.
3) The pH value and NH of the water sample are calculated and obtained through the measured conductivity and hydrogen conductivity4 +Concentration, accurate result and less interference.
4) By measuring one path of water sample, the original four paths of water samples can be respectively measured for the conductivity, the hydrogen conductivity and the NH4 +And the pH value, energy conservation, environmental protection, stable performance and convenient operation.
5) The utility model discloses a measurement system is small, easily installs, is suitable for the field usage, also can regard as portable table meter to use, can accurately measure conductivity, hydrogen conductivity, NH simultaneously4 +And a pH value.
Claims (1)
1. A multi-parameter water quality measuring system is characterized by comprising a data processor (4), the device comprises a water sample conveying pipeline and an electric regeneration cation exchanger (2) for removing cations in a water sample, wherein the water sample conveying pipeline is provided with a first conductivity sensor (1) for detecting the conductivity of the water sample and a second conductivity sensor (3) for detecting the hydrogen conductivity of the water sample, the water sample conveying pipeline is communicated with an inlet of the first conductivity sensor (1), an outlet of the first conductivity sensor (1) is communicated with a water sample inlet of the electric regeneration cation exchanger (2), a water sample outlet of the electric regeneration cation exchanger (2) is communicated with an inlet of the second conductivity sensor (3), an outlet of the second conductivity sensor (3) is communicated with an electrolytic water passage inlet of the electric regeneration cation exchanger (2), and an electrolytic water passage outlet of the electric regeneration cation exchanger (2) is communicated with a drainage pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921509247.0U CN211292685U (en) | 2019-09-10 | 2019-09-10 | Multi-parameter water quality measuring system |
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| CN201921509247.0U CN211292685U (en) | 2019-09-10 | 2019-09-10 | Multi-parameter water quality measuring system |
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| CN211292685U true CN211292685U (en) | 2020-08-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487849A (en) * | 2019-09-10 | 2019-11-22 | 华能国际电力股份有限公司 | A kind of multi-parameter water quality measuring system and method |
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2019
- 2019-09-10 CN CN201921509247.0U patent/CN211292685U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487849A (en) * | 2019-09-10 | 2019-11-22 | 华能国际电力股份有限公司 | A kind of multi-parameter water quality measuring system and method |
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