CN112162018A - Power plant steam-water sampling frame hydrogen conductivity meter and working method thereof - Google Patents
Power plant steam-water sampling frame hydrogen conductivity meter and working method thereof Download PDFInfo
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- CN112162018A CN112162018A CN202011127618.6A CN202011127618A CN112162018A CN 112162018 A CN112162018 A CN 112162018A CN 202011127618 A CN202011127618 A CN 202011127618A CN 112162018 A CN112162018 A CN 112162018A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
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- G01N27/07—Construction of measuring vessels; Electrodes therefor
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/22—Measuring resistance of fluids
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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Abstract
The invention discloses a power plant steam-water sampling frame hydrogen conductivity meter and a working method thereof, wherein a multichannel continuous electric regeneration cation exchanger integrated device comprises a housing case and a plurality of continuous electric regeneration cation exchangers arranged in the housing case, wherein one continuous electric regeneration cation exchanger corresponds to one detection branch circuit, the detection branch circuit comprises an electric conductivity electrode and an electric conductivity meter, a water sample inlet is arranged on the continuous electric regeneration cation exchanger, a water sample outlet of the continuous electric regeneration cation exchanger is communicated with an inlet of the electric conductivity electrode, an outlet of the electric conductivity electrode is communicated with a regeneration inlet of the continuous electric regeneration cation exchanger, a regeneration outlet is arranged on the continuous electric regeneration cation exchanger, the electric conductivity electrode is connected with the electric conductivity meter, the hydrogen conductivity meter and the working method thereof can realize continuous measurement of hydrogen conductivity, meanwhile, the occupied space is small, and the maintenance difficulty is small.
Description
Technical Field
The invention belongs to the technical field of power generation, and relates to a hydrogen conductivity meter of a steam-water sampling frame of a power plant and a working method thereof.
Background
The steam-water sampling frame is key equipment for the centralized planning design and the centralized water vapor sampling of the on-line chemical instruments of the power plant, and the design and the layout of the dial plate of the steam-water sampling frame affect the maintenance workload of the later-stage operation maintenance personnel on various on-line chemical instruments. The hydrogen conductivity meter is an online chemical meter with the largest quantity arranged on the steam-water sampling frame, each steam-water sampling frame is provided with 8-12 sets of hydrogen conductivity meters according to different design schemes, and the occupied space of the hydrogen conductivity meters is the largest compared with other online chemical meters. Therefore, the design and layout of the hydrogen conductivity meter on the steam-water sampling frame greatly determine the aesthetic degree, the practical degree and the later maintenance workload of the whole design.
At present, the traditional online hydrogen conductivity meter is adopted in domestic steam-water sampling frames, and the design scheme has the following problems:
1) the hydrogen conductivity meter used a conventional cation exchange resin column. Traditional cation exchange resin post realizes hydrogen conductivity measurement through install cation exchange resin additional in the cylinder and replace cation in the water sample, and this kind of resin post progressively loses efficacy along with practical, needs the manual work to take out the resin after becoming invalid and regenerates or change, and it is faster if quality of water becomes poor the resin post inefficacy. The traditional hydrogen conductivity measurement method cannot ensure the monitoring continuity, and particularly, when the unit is started, the resin column with poor water quality is easy to lose efficacy, so that the analysis and judgment of the water quality condition of the unit at the initial operation stage are inconvenient.
2) The hydrogen conductivity meter adopts cation exchange resin column with larger volume. Ion exchange resin column is cylindrical design, and in addition the design of business turn over water pipeline, general occupation space is great, and general soda sample frame is all concentrated the arranging at soda sample frame back with ion exchange resin column for pleasing to the eye design. Because the occupied space is large, the overhaul and maintenance personnel can only enter the steam-water sampling frame through a narrow passage to maintain the online chemical instrument, and the working difficulty of the maintenance personnel is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a hydrogen conductivity meter of a steam-water sampling frame of a power plant and a working method thereof.
In order to achieve the purpose, the hydrogen conductivity meter of the steam-water sampling frame of the power plant comprises a multi-channel continuous electric regeneration cation exchanger integrated device, a plurality of detection branches and a power supply device for supplying electric energy;
the multi-channel continuous electrically-regenerated cation exchanger integrated equipment comprises a shell case and a plurality of continuous electrically-regenerated cation exchangers arranged in the shell case, wherein one continuous electrically-regenerated cation exchanger corresponds to one detection branch, each detection branch comprises a conductivity electrode and a conductivity meter, a water sample inlet is formed in each continuous electrically-regenerated cation exchanger, a water sample outlet of each continuous electrically-regenerated cation exchanger is communicated with an inlet of the conductivity electrode, an outlet of the conductivity electrode is communicated with a regeneration inlet of each continuous electrically-regenerated cation exchanger, a regeneration outlet is formed in each continuous electrically-regenerated cation exchanger, and each conductivity electrode is connected with the conductivity meter.
The conductivity electrode is connected with a conductivity meter through a signal wire.
And the display is connected with the conductivity meter.
A working method of a power plant steam-water sampling frame hydrogen conductivity meter comprises the following steps:
the method comprises the following steps that an on-site water sample enters a continuous electric regeneration cation exchanger through a water sample inlet, cations are replaced in the continuous electric regeneration cation exchanger, the water sample after cation replacement enters a conductivity electrode through a water sample outlet for conductivity measurement, then enters the continuous electric regeneration cation exchanger through a regeneration inlet for electrolysis to generate hydrogen ions, and then is discharged through a regeneration outlet, wherein the generated hydrogen ions are used for regenerating resin in the continuous electric regeneration cation exchanger;
the conductivity electrode inputs the measured conductivity into the conductivity meter, and the conductivity meter compensates the measured conductivity according to the built-in nonlinear temperature compensation curve to obtain the conductivity of the field water sample.
The invention has the following beneficial effects:
the hydrogen conductivity meter of the steam-water sampling frame of the power plant and the working method thereof integrate a plurality of continuous electric regeneration cation exchangers in the same shell header during specific operation, effectively save the space of the steam-water sampling frame compared with the traditional cation exchange resin column, meanwhile, when the device works, a water sample firstly enters the continuous electric regeneration cation exchanger to replace cations and then enters the conductivity electrode to measure the conductivity, then the water is electrolyzed in a continuous electric regeneration cation exchanger, hydrogen ions generated by the electrolyzed water regenerate the resin in the continuous electric regeneration cation exchanger to realize replacement and regeneration, so as to realize the continuous measurement of the hydrogen conductivity, improve the accuracy of the hydrogen conductivity measurement of the water vapor system of the power plant, meanwhile, the accurate measurement of the hydrogen conductivity is completed without manual intervention, and various problems of the traditional cation exchange resin column are solved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a conductivity meter, 2 is a conductivity electrode, 3 is a continuous electric regeneration cation exchanger, 4 is a water sample inlet, 5 is a water sample outlet, 6 is a regeneration inlet, 7 is a regeneration outlet, 8 is a multi-channel continuous electric regeneration cation exchanger integrated device, and 9 is a power supply device.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the hydrogen conductivity meter of the steam-water sampling rack of the power plant comprises a multi-channel continuous electrically regenerated cation exchanger integrated device 8, a plurality of detection branches and a power supply device 9 for supplying electric energy; the multi-channel continuous electric regeneration cation exchanger integrated equipment 8 comprises a housing case and a plurality of continuous electric regeneration cation exchangers 3 arranged in the housing case, wherein one continuous electric regeneration cation exchanger 3 corresponds to one detection branch, the detection branch comprises an electric conductivity electrode 2 and an electric conductivity meter 1, a water sample inlet 4 is arranged on the continuous electric regeneration cation exchanger 3, a water sample outlet 5 of the continuous electric regeneration cation exchanger 3 is communicated with an inlet of the electric conductivity electrode 2, an outlet of the electric conductivity electrode 2 is communicated with a regeneration inlet 6 of the continuous electric regeneration cation exchanger 3, a regeneration outlet 7 is arranged on the continuous electric regeneration cation exchanger 3, and the electric conductivity electrode 2 is connected with the electric conductivity meter 1.
The conductivity electrode 2 is connected to the conductivity meter 1 through a signal line.
The invention also comprises a display connected to the conductivity meter 1.
The working method of the power plant steam-water sampling frame hydrogen conductivity meter comprises the following steps:
the method comprises the following steps that an on-site water sample enters a continuous electric regeneration cation exchanger 3 through a water sample inlet 4, cations are replaced in the continuous electric regeneration cation exchanger 3, the water sample after cation replacement enters a conductivity electrode 2 through a water sample outlet 5 for conductivity measurement, then enters the continuous electric regeneration cation exchanger 3 through a regeneration inlet 6 for electrolysis to generate hydrogen ions, and then is discharged through a regeneration outlet 7, wherein the produced hydrogen ions are used for resin regeneration of the continuous electric regeneration cation exchanger 3;
the conductivity electrode 2 inputs the measured conductivity into the conductivity meter 1, the conductivity meter 1 compensates the measured conductivity according to a built-in nonlinear temperature compensation curve to obtain the conductivity of the field water sample, and then the conductivity of the field water sample is sent to a user side and displayed through a display.
It should be noted that the circuit for replacing cations in the water sample in the continuously electrically regenerated cation exchanger 3 is independently separated from the electrolysis circuit of the water sample, so as to achieve the purpose of regeneration while using, and ensure that the continuously electrically regenerated cation exchanger 3 has the capability of replacing cations in the water sample all the time.
According to the invention, a plurality of continuous electric regeneration cation exchangers 3 are assembled in the same shell case to form a multi-channel continuous electric regeneration cation exchanger integrated device 8, and then concentrated power supply is carried out through a power supply device 9, because the volume of the continuous electric regeneration cation exchanger 3 is smaller, a single set of device only occupies 1/3 of the volume of the traditional cation exchange resin column, and the installation space of a field steam-water sampling frame only 3/4 can be saved by further optimizing the space after combining a plurality of sets.
The method can improve the measurement accuracy of the hydrogen conductivity meter of the water vapor system of the power plant, and realizes the continuous on-line monitoring of the hydrogen conductivity meter in the true sense; meanwhile, the design space of the ponding sampling frame is effectively saved, the sampling frame is favorable for distributing more other online chemical instruments, and the difficulty in maintaining the instruments by field instrument maintainers is reduced. In addition, the resin column is maintained without manual intervention, the labor cost of field operation maintenance personnel is saved, acid waste liquid discharge is avoided, the method is more environment-friendly than the traditional method, and the environmental protection requirement of power plant operation is met.
Claims (4)
1. A power plant steam-water sampling frame hydrogen conductivity meter is characterized by comprising a multi-channel continuous electric regeneration cation exchanger integrated device (8), a plurality of detection branches and a power supply device (9) for supplying electric energy;
the multi-channel continuous electric regeneration cation exchanger integrated equipment (8) comprises a housing case and a plurality of continuous electric regeneration cation exchangers (3) arranged in the housing case, wherein one continuous electric regeneration cation exchanger (3) corresponds to one detection branch, the detection branch comprises a conductivity electrode (2) and a conductivity meter (1), a water sample inlet (4) is formed in each continuous electric regeneration cation exchanger (3), a water sample outlet (5) of each continuous electric regeneration cation exchanger (3) is communicated with an inlet of the conductivity electrode (2), an outlet of the conductivity electrode (2) is communicated with a regeneration inlet (6) of each continuous electric regeneration cation exchanger (3), a regeneration outlet (7) is formed in each continuous electric regeneration cation exchanger (3), and each conductivity electrode (2) is connected with the conductivity meter (1).
2. The power plant steam-water sampling frame hydrogen conductivity meter according to claim 1, characterized in that the conductivity electrode (2) is connected with the conductivity meter (1) through a signal line.
3. The power plant steam-water sampling frame hydrogen conductivity meter according to claim 1, characterized by further comprising a display connected with the conductivity meter (1).
4. The working method of the power plant steam-water sampling frame hydrogen conductivity meter according to claim 1, characterized by comprising the following steps:
the method comprises the following steps that an on-site water sample enters a continuous electric regeneration cation exchanger (3) through a water sample inlet (4), cations are replaced in the continuous electric regeneration cation exchanger (3), the water sample after cation replacement enters a conductivity electrode (2) through a water sample outlet (5) for conductivity measurement, then enters the continuous electric regeneration cation exchanger (3) through a regeneration inlet (6) for electrolysis to generate hydrogen ions, and then is discharged through a regeneration outlet (7), wherein resin in the continuous electric regeneration cation exchanger (3) is regenerated through the generated hydrogen ions;
the conductivity electrode (2) inputs the measured conductivity into the conductivity meter (1), and the conductivity meter (1) compensates the measured conductivity according to a built-in nonlinear temperature compensation curve to obtain the conductivity of the field water sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011127618.6A CN112162018A (en) | 2020-10-20 | 2020-10-20 | Power plant steam-water sampling frame hydrogen conductivity meter and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011127618.6A CN112162018A (en) | 2020-10-20 | 2020-10-20 | Power plant steam-water sampling frame hydrogen conductivity meter and working method thereof |
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| CN112162018A true CN112162018A (en) | 2021-01-01 |
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| CN202011127618.6A Pending CN112162018A (en) | 2020-10-20 | 2020-10-20 | Power plant steam-water sampling frame hydrogen conductivity meter and working method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552178A (en) * | 2021-05-27 | 2021-10-26 | 华电电力科学研究院有限公司 | Automatic continuous measurement method for hydrogen conductivity in steam-water sampling |
| CN113960118A (en) * | 2021-11-23 | 2022-01-21 | 中国神华能源股份有限公司惠州热电分公司 | Electric regeneration type system for measuring water vapor hydrogen conductivity |
| CN114477385A (en) * | 2021-12-16 | 2022-05-13 | 华能南京燃机发电有限公司 | Method and device for removing cations in steam water of power station |
| CN115739207A (en) * | 2022-12-14 | 2023-03-07 | 西安热工研究院有限公司 | Automatic control system and method for quitting operation of ion exchanger |
-
2020
- 2020-10-20 CN CN202011127618.6A patent/CN112162018A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552178A (en) * | 2021-05-27 | 2021-10-26 | 华电电力科学研究院有限公司 | Automatic continuous measurement method for hydrogen conductivity in steam-water sampling |
| CN113552178B (en) * | 2021-05-27 | 2023-08-04 | 华电电力科学研究院有限公司 | Automatic continuous measurement method for steam-water sampling hydrogen conductivity |
| CN113960118A (en) * | 2021-11-23 | 2022-01-21 | 中国神华能源股份有限公司惠州热电分公司 | Electric regeneration type system for measuring water vapor hydrogen conductivity |
| CN114477385A (en) * | 2021-12-16 | 2022-05-13 | 华能南京燃机发电有限公司 | Method and device for removing cations in steam water of power station |
| CN115739207A (en) * | 2022-12-14 | 2023-03-07 | 西安热工研究院有限公司 | Automatic control system and method for quitting operation of ion exchanger |
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