CN218157675U - Degassing conductivity measuring device - Google Patents

Abstract

The utility model relates to a degasification conductivity measuring device, including vacuum degassing module and conductivity measuring module, vacuum degassing module include vacuum cavity and vacuum inlet tube (1), degasification transfer line (7) and vacuum outlet pipe (8) that communicate in proper order, degasification transfer line (7) be located the vacuum cavity, the pipe wall material of degasification transfer line (7) be the ventilated membrane, vacuum outlet pipe (8) be connected with conductivity measuring module. Compared with the prior art, the utility model has the advantages of the reliability is high, the ease for use is strong, can on-line measuring, the precision is high, simple structure.

Description

Degassing conductivity measuring device

Technical Field

The utility model belongs to the technical field of the water quality monitoring technique and specifically relates to a degasification conductivity measuring device is related to.

Background

Modern power plant chemical supervision tests are less and less staffed today, often requiring measurements that rely more heavily on-line instruments, trying to get rid of heavy manual testing. With the improvement of modern measurement technology and the increase of automation level application technology, more ion information is needed to judge the reliability of the system.

However, as these trace contaminants increase in concentration during plant startup, abnormal conditions or disturbances, research and research efforts have been undertaken by foreign research institutes to analyze and map the effects of large amounts of carbon dioxide pollution, but ammonia and carbon dioxide are present, interfere and affect the measurements. Ion chromatography is the most specific method of determining this, but it is too expensive and operator intensive to use in most power plants.

As further research progresses, if pH and conductivity are accurately measured, the concentrations of ammonia and carbon dioxide can be determined. Through improvements in conductivity and pH correlation, westinghouse chemical assistance experts provide extensive automated diagnostics in cyclic chemical monitoring systems, including comparative parameter and curve correlation calculation formulas for these measurements, for which algorithms typically pH must be between 7.5 and 10.5, specific conductivity must be greater than cationic conductivity, especially at low conductivity levels, based on the particular environment of power plant condensate plus ammonia, it is noted that specific conductivity is the primary factor of influence, whereas cationic conductivity is used to correct for the presence of small amounts of mineral and/or carbon dioxide contamination, the primary specific conductivity (and pH) effect is ammonia or amine, and the concentration of contaminants is low, which is currently addressed primarily through degassing techniques, which are recognized in plants around the world, especially in europe.

The existing degassing technology is mainly a heating degassing method, although the method is convenient, the method is easy to catch fire or explode, and meanwhile, the energy consumption is large, so that the method is not beneficial to saving energy consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a degasification conductivity measuring device in order to overcome the defect that above-mentioned prior art exists, the reliability is high, and the ease for use is strong, can online measurement, and the precision is high, simple structure.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a degasification conductivity measuring device, includes vacuum degassing module and conductivity measurement module, the vacuum degassing module include vacuum cavity and the vacuum inlet tube that communicates in proper order, degasification transfer line and vacuum outlet pipe, the degasification transfer line be located the vacuum cavity, the pipe wall material of degasification transfer line be the ventilated membrane, the vacuum outlet pipe be connected with conductivity measurement module.

Furthermore, the device also comprises a conductance controller which is electrically connected with the conductance measuring module.

Furthermore, the vacuum cavity is realized by a micro vacuum pump and a micro vacuum device, and the micro vacuum pump is communicated with the micro vacuum device and is electrically connected with the conductance controller.

Furthermore, the micro vacuum pump is electrically connected with the conductance controller through a control cable.

Furthermore, the conductivity measuring module comprises a conductance electrode, and the conductance electrode is electrically connected with the conductance controller.

Furthermore, the device also comprises an electrode cup matched with the conductive electrode, and the vacuum water outlet pipe is communicated with the electrode cup.

Further, the electrode cup is connected with a discharge pipe.

Further, the height of the communication position of the discharge pipe and the electrode cup is larger than that of the communication position of the vacuum water outlet pipe and the electrode cup.

Furthermore, the conductance electrode is electrically connected with the conductance controller through a measuring line.

Further, the gas permeable film is a synthetic resin film.

Compared with the prior art, the utility model discloses have with following beneficial effect:

(1) The utility model discloses the device includes vacuum degassing module and conductivity measurement module, the vacuum degassing module is based on the vacuum degassing principle, the mobile measured water gets into the degasification transfer line through the vacuum inlet tube, because the degasification transfer line is in the vacuum cavity, the pipe wall material of degasification transfer line is the ventilated membrane, therefore oxygen in the measured water in the degasification transfer line, nitrogen gas and carbon dioxide will get into outside the membrane and be got rid of from the membrane, accomplish the degasification, the measured water after the degasification flows out from the vacuum outlet pipe, conductivity measurement module can record the conductivity of the measured water after the degasification, the security of device is higher, the consumption is lower, energy saving and consumption reduction's effect has been reached, the reliability of device is high, the ease for use is strong, the accuracy of on-line measurement further improves, the device is simple in structure, low cost;

(2) The utility model discloses vacuum cavity is realized through micro vacuum pump and miniature vacuum ware, and micro vacuum pump communicates with miniature vacuum ware, and micro vacuum pump passes through control cable and conductance controller electric connection, and conductivity measurement module and conductance controller electric connection control the start-stop of miniature vacuum pump through the conductance controller, and the automatic measurement simultaneously outgases the conductivity of the measured water, in time controls the start-stop of miniature vacuum pump through the change of water sample, has integrateed measurement, control and protect function;

(3) The utility model discloses conductivity measurement module includes conductivity electrode and electrode cup, and the measured water after the degasification flows into the electrode cup through vacuum outlet pipe, flows out from the electrode cup through the delivery pipe, conductivity electrode and conductivity controller electric connection, and inserts the electrode cup, and simple structure can online real-time measurement degasification after the conductivity of measured water.

Drawings

Fig. 1 is a schematic structural view of the present invention;

the reference numbers in the figures illustrate:

1. the device comprises a vacuum water inlet pipe, 2. A micro vacuum pump water inlet pipe, 3. A micro vacuum pump, 4. A control cable, 5. An electric conduction controller, 6. A micro vacuum device, 7. A degassing liquid conveying pipe, 8. A vacuum water outlet pipe, 9. An electrode cup, 10. A discharge pipe, 11. An electric conduction electrode and 12. A measuring wire.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment of the present invention is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

The utility model provides a degasification conductivity measuring device, as figure 1, includes vacuum degassing module and conductivity measurement module, and vacuum degassing module includes vacuum cavity and vacuum inlet tube 1, degasification transfer line 7 and the vacuum outlet pipe 8 that communicate in proper order, and degasification transfer line 7 is located the vacuum cavity, and the pipe wall material of degasification transfer line 7 is the ventilated membrane, and vacuum outlet pipe 8 is connected with conductivity measurement module.

Flowing detected water enters a degassing liquid conveying pipe 7 through a vacuum water inlet pipe 1, and the degassing liquid conveying pipe 7 is arranged in a vacuum cavity, and the pipe wall of the degassing liquid conveying pipe 7 is made of a breathable film, so that oxygen, nitrogen and carbon dioxide in the detected water in the degassing liquid conveying pipe 7 can enter the film from the film and be removed, degassing is completed, the degassed detected water flows out of a vacuum water outlet pipe 8, and the conductivity of the degassed detected water can be measured by a conductivity measurement module.

The degassing conductivity measuring device proposed in this embodiment can be used for the following purposes:

CO before degassing by using measured water ₂ Conductivity data on-line to obtain CO ₂ Concentration, removal of CO ₂ Thereafter, the conductivity of the remaining degassed cation can be interpreted as total non-volatile anions, reading ppb chloride or sulfate;

the carbon dioxide in the steam and condensate may come from the decomposition of organic matter not removed during the makeup water treatment, and inhibition of the organic matter may be taken by the degassing conductivity measurement device;

checking the tightness of the condenser;

checking the oxygen removal effect of the process so as to adjust the process;

the concentration of the anion is inferred in the degassed cation conductivity sample.

Example 2

In this embodiment, as shown in fig. 1, the degassing conductivity measurement device further includes a conductance controller 5, the vacuum cavity is implemented by a micro vacuum pump 3 and a micro vacuum 6, the micro vacuum pump 3 is communicated with the micro vacuum 6, the micro vacuum pump 3 is electrically connected with the conductance controller 5 through a control cable 4, the conductivity measurement module is electrically connected with the conductance controller 5, the conductance controller 5 is used for controlling the start and stop of the micro vacuum pump 3, meanwhile, the conductivity of the degassed measured water is automatically measured, the start and stop of the micro vacuum pump 3 are timely controlled through the change of the water sample, and the measurement, control and protection functions are integrated.

The rest is the same as in example 1.

Example 3

In this embodiment, as shown in fig. 1, the conductivity measurement module includes a conductive electrode 11 and an electrode cup 9 matched with the conductive electrode 11, the conductive electrode 11 is electrically connected to the conductivity controller 5 through a measurement line 12 and is inserted into the electrode cup 9, the vacuum water outlet pipe 8 is communicated with the electrode cup 9, the electrode cup 9 is connected to a discharge pipe 10, a height of a communication position between the discharge pipe 10 and the electrode cup 9 is greater than a height of a communication position between the vacuum water outlet pipe 8 and the electrode cup 9, the degassed measured water flows into the electrode cup 9 through the vacuum water outlet pipe 8 and flows out of the electrode cup 9 through the discharge pipe 10, and the conductivity controller 5 measures the conductivity of the degassed measured water through the conductive electrode 11.

The rest was the same as in example 2.

Example 4

In this example, the gas permeable film was a synthetic resin film, and the other steps were the same as in example 1.

Embodiment 1, embodiment 2, embodiment 3 and embodiment 4 provide a degasification conductivity measurement device, degas the measured water through the vacuum degasification module based on the vacuum degasification principle, then measure the degasification conductivity through the conductivity measurement module, compare with heating degasification, the security is higher, the power consumption is lower, reached energy saving and consumption reduction's effect, the reliability of device is high, and the ease of use is strong, and the precision of on-line measurement further improves, and device simple structure, low cost.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. The utility model provides a degasification conductivity measuring device, its characterized in that includes vacuum degassing module and conductivity measurement module, vacuum degassing module include vacuum cavity and vacuum inlet tube (1), degasification transfer line (7) and vacuum outlet pipe (8) that communicate in proper order, degasification transfer line (7) be located the vacuum cavity, the pipe wall material of degasification transfer line (7) be the ventilated membrane, vacuum outlet pipe (8) be connected with conductivity measurement module.

2. The degassed conductivity measurement device of claim 1, further comprising a conductivity controller (5), said conductivity controller (5) being electrically connected to the conductivity measurement module.

3. The degassing conductivity measuring device according to claim 2, wherein the vacuum cavity is realized by a micro vacuum pump (3) and a micro vacuum (6), and the micro vacuum pump (3) is communicated with the micro vacuum (6) and is electrically connected with the conductance controller (5).

4. A degassing conductivity measuring device according to claim 3, wherein said micro vacuum pump (3) is electrically connected to the conductivity controller (5) through a control cable (4).

5. The degassed conductivity measurement device of claim 2, wherein said conductivity measurement module comprises a conductance electrode (11), said conductance electrode (11) being electrically connected to a conductance controller (5).

6. The outgassing conductivity measuring apparatus according to claim 5, wherein said apparatus further comprises an electrode cup (9) matching the conductance electrode (11), said vacuum outlet pipe (8) communicating with the electrode cup (9).

7. The outgassing conductivity measurement apparatus according to claim 6, wherein the electrode cup (9) is connected with a drain pipe (10).

8. The degassing conductivity measuring device according to claim 7, wherein the height of the connection between the discharge pipe (10) and the electrode cup (9) is greater than the height of the connection between the vacuum outlet pipe (8) and the electrode cup (9).

9. A degassing conductivity measuring device according to claim 5, wherein said conductivity electrode (11) is electrically connected to the conductivity controller (5) via a measuring line (12).

10. The outgassing conductivity measuring apparatus according to claim 1, wherein the gas permeable film is a synthetic resin film.

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