CN111427392A - Thermal power plant circulating water concentration rate timely adjusting and controlling system and method - Google Patents
Thermal power plant circulating water concentration rate timely adjusting and controlling system and method Download PDFInfo
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- CN111427392A CN111427392A CN202010319167.XA CN202010319167A CN111427392A CN 111427392 A CN111427392 A CN 111427392A CN 202010319167 A CN202010319167 A CN 202010319167A CN 111427392 A CN111427392 A CN 111427392A
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Abstract
The invention discloses a system and a method for timely adjusting and controlling the concentration ratio of circulating water in a thermal power plant, wherein the system comprises a circulating water make-up water pump, a circulating water make-up water pipeline, a circulating water stabilizer dosing system, a cooling tower, a circulating water make-up water quality measuring system, a water taking pump, a circulating water drainage pipeline, a circulating water quality measuring system and a circulating water control system; a circulating water replenishing water electromagnetic valve and a circulating water replenishing water flowmeter are arranged on the circulating water replenishing water pipeline; the circulating water make-up water quality measuring system comprises a make-up water pipeline connected with the circulating water make-up water pipeline and a #1 chloride ion meter arranged on the make-up water pipeline; the circulating water quality measuring system comprises a first pipeline, a second pipeline and a measuring pipeline, wherein a pH meter, a #2 chloride ion meter and an alkalinity meter are arranged on the measuring pipeline.
Description
Technical Field
The invention relates to a control system and a control method for a circulating water system of a thermal power plant, in particular to a system and a method for timely adjusting and controlling the concentration ratio of circulating water of the thermal power plant.
Background
In recent years, with the stricter requirements on water saving and wastewater discharge, the shortage of the current online monitoring technology of circulating water leads to the situation that the circulating water operation management control level is far behind, so that the original performance of a circulating water medicament cannot play the normal effect in production, the concentration ratio of the circulating water in the current power plant water saving and wastewater treatment and improvement design is generally higher, most of the circulating water is more than 5 times, even part of the circulating water in the power plant operates at the concentration ratio of more than 8 times, and the high concentration ratio puts a high requirement on the operation management of the circulating water. In addition, because the factors that influence the circulating water concentration rate are more, such as circulating water quality, downstream user water demand, cooling tower liquid level etc. do not have a unified understanding and management about each factor at present, realize the circulating water blowdown through manual control blowoff valve, circulating water concentration rate is unstable.
At present, the adding mode of the circulating water treatment reagent is to manually adjust a metering pump of the reagent or a control valve of a rotameter according to the adding amount of the supplementing water in the system and quantitatively add the water treatment reagent to the system, and the mode is very extensive, but different dosages of the circulating water treatment reagent are needed by different concentration ratios.
Above problem not only causes the scale deposit of circulating water system to corrode, reduces the economic environmental protection nature of power plant, threatens the safety and stability operation of unit, probably causes the circulating water system to take the not satisfied designing requirement of drainage moreover, and the environmental protection risk is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system and a method for timely adjusting and controlling the concentration ratio of circulating water in a thermal power plant.
In order to achieve the purpose, the system for timely adjusting and controlling the concentration ratio of the circulating water of the thermal power plant comprises a circulating water make-up water pump, a circulating water make-up water pipeline, a circulating water stabilizer dosing system, a cooling tower, a circulating water make-up water quality measuring system, a water taking pump, a circulating water drainage pipeline, a circulating water quality measuring system and a circulating water control system;
the outlet of the circulating water make-up water pump is communicated with one end of a circulating water make-up water pipeline, the other end of the circulating water make-up water pipeline is divided into two paths, wherein one path is communicated with the outlet of the circulating water stabilizer dosing system through a pipeline and then communicated with the cooling tower, the other path is communicated with the circulating water make-up water quality measuring system, and the outlet of the water tank at the bottom of the cooling tower is communicated with the circulating water drainage pipeline and the circulating water quality measuring system after passing through the water taking pump;
a circulating water replenishing water electromagnetic valve and a circulating water replenishing water flowmeter are arranged on the circulating water replenishing water pipeline;
the circulating water make-up water quality measuring system comprises a make-up water pipeline connected with the circulating water make-up water pipeline and a #1 chloride ion meter arranged on the make-up water pipeline;
the circulating water quality measuring system comprises a first pipeline, a second pipeline and a measuring pipeline, wherein one end of the first pipeline and one end of the second pipeline are both communicated with an outlet of a water taking pump, the other end of the first pipeline and the other end of the second pipeline are both communicated with the measuring pipeline, a #1 corrosion hanging sheet is arranged in the first pipeline, a #2 corrosion hanging sheet is arranged in the second pipeline, and a pH meter, a #2 chloridion meter and an alkalimeter are arranged on the measuring pipeline;
a temperature monitoring system for detecting the external environment temperature of the cooling tower is arranged on the outer side of the cooling tower, and a cooling tower liquid level meter for detecting the liquid level at the bottom of the cooling tower is arranged at the bottom of the cooling tower;
the circulating water control system is connected with a circulating water make-up water electromagnetic valve, a circulating water make-up water flowmeter, a temperature monitoring system, a circulating water stabilizer dosing system, a cooling tower liquid level meter, a #1 chloride ion meter, a pH meter, a #2 chloride ion meter and an alkalinity meter.
And a circulating water drainage electromagnetic valve and a circulating water drainage flowmeter are arranged on the circulating water drainage pipeline.
The make-up water pipe is provided with a #1 water inlet manual valve, a #1 pipe filter, a #1 float flowmeter and a #1 water discharge manual valve.
The outlet of the water taking pump is communicated with the first pipeline and the second pipeline after passing through a #2 water inlet manual valve, a #2 pipeline filter and a #2 float flowmeter.
And a #2 drainage manual valve is arranged on the measuring pipeline.
The method for timely adjusting and controlling the concentration ratio of the circulating water of the thermal power plant comprises the following steps:
the circulating water make-up water output by the circulating water make-up water pump is divided into two paths, wherein one path enters a circulating water make-up water pipeline, the other path is mixed with a circulating water stabilizer output by a circulating water stabilizer dosing system and then sent into a cooling tower, liquid extracted from the bottom of the cooling tower by the water pump is divided into two paths, one path enters a circulating water drainage pipeline, the other path enters a first pipeline and a second pipeline, and water output by the first pipeline and water output by the second pipeline enter a measuring pipeline;
the circulating water control system measures the quantity of circulating water make-up water in a circulating water make-up water pipeline through a circulating water make-up water flowmeter, and adjusts the quantity of circulating water make-up water in the circulating water make-up water pipeline through a circulating water make-up water electromagnetic valve;
monitoring the liquid level of the cooling tower through a liquid level meter of the cooling tower; detecting the temperature of the surrounding environment of the cooling tower through a temperature monitoring system;
detecting the concentration of chloride ions in circulating water supplementing water in a supplementing water pipeline through a #1 chloride ion meter;
respectively detecting the pH value, the chloride ion concentration and the alkalinity of circulating water in a measuring pipeline through a pH meter, a #2 chloride ion meter and an alkalinity meter;
the circulating water control system establishes a function K of the external environment temperature T of the cooling tower and a circulating water concentration multiplying power control value K as f1(T), wherein the circulating water concentration multiplying power K meets the following requirements: k is more than or equal to K-0.5 and less than or equal to K + 0.5;
setting the concentration multiplying power K of the circulating water as B2/B1, wherein B1 is the concentration of the chloride ions in the supplementing water of the circulating water, and B2 is the concentration of the chloride ions in the circulating water;
setting the maximum value of the liquid level of the cooling tower as Ymax, the minimum value of the liquid level of the cooling tower as Ymin, and increasing the opening of a circulating water make-up water electromagnetic valve when the test value Y of a liquid level meter of the cooling tower is lower than Ymin; when the test value Y of the cooling tower liquid level meter is greater than Ymax, the opening of the circulating water supplementing water electromagnetic valve is reduced, so that Y is less than or equal to Ymin and less than or equal to Ymax,
when the measured value JD of the alkalinity meter is greater than the preset maximum alkalinity JDmax, increasing the opening of a circulating water make-up water electromagnetic valve to ensure that JD is less than or equal to Jdmax;
when the measured value L x of the #2 chlorine ion meter is greater than the preset maximum concentration L xmax, the opening degree of the electromagnetic valve for the circulating water make-up water is increased, so that L x is less than or equal to L xmax;
when the pH value of the test value of the pH meter is greater than the preset maximum pH value pHmax, the opening degree of a circulating water supplementing water electromagnetic valve is increased, so that the pH value is less than or equal to pHmax;
the circulating water control system constructs a function of the dosing quantity Q of the circulating water stabilizer dosing system, the circulating water make-up water quantity Q and a circulating water concentration multiplying power control value k, wherein k is f2(Q, k), and the dosing quantity Q of the circulating water stabilizer dosing system is controlled according to the function.
The cooling tower liquid level Y control, the priority of circulating water basicity JD control, chloride ion L x control and pH value control is the highest, and then the control of concentration multiplying power K is performed.
The invention has the following beneficial effects:
the invention relates to a system and a method for timely adjusting and controlling the concentration ratio of circulating water in a thermal power plant, which are characterized in that a function of the external environment temperature T of a cooling tower and a control value k of the concentration ratio of the circulating water is constructed, the concentration ratio of the circulating water is controlled by the function, the control precision of the concentration ratio is less than +/-0.5, and meanwhile, a function of the dosing quantity Q of a circulating water stabilizer dosing system, the quantity Q of circulating water make-up water and the control value k of the concentration ratio of the circulating water is constructed, so that the dosing of the circulating water stabilizer is realized according to needs, the dosage of the circulating water stabilizer is reduced, and the influence of excessive circulating water stabilizer on a downstream desulfurization system or a circulating sewage desalination pretreatment system is avoided.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a circulating water make-up water electromagnetic valve, 2 is a circulating water make-up water flow meter, 3 is a circulating water stabilizer dosing system, 4 is a temperature monitoring system, 5 is a cooling tower liquid level meter, 6 is a #1 water inlet manual valve, 7 is a #1 pipeline filter, 8 is a #1 floater flow meter, 9 is a #1 chlorine ion meter, 10 is a #1 water discharge manual valve, 11 is a water taking pump, 12 is a circulating water discharge electromagnetic valve, 13 is a circulating water discharge flow meter, 14 is a #2 water inlet manual valve, 15 is a #2 pipeline filter, 16 is a #2 floater flow meter, 17 is a #1 corrosion hanging piece, 18 is a #2 corrosion hanging piece, 19 is a pH meter, 20 is a #2 chlorine ion meter, 21 is an alkali meter, 22 is a #2 water discharge manual valve, 23 is a circulating water control system, G1 is a circulating water make-up water pipeline, G2 is a circulating water discharge pipeline, C1 is a circulating water make-up water quality measuring system, a, C2 is a circulating water quality measuring system.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the system for timely adjusting and controlling the concentration ratio of the circulating water in the thermal power plant comprises a circulating water make-up pump, a circulating water make-up water pipeline G1, a circulating water stabilizer dosing system 3, a cooling tower, a circulating water make-up water quality measuring system C1, a water intake pump 11, a circulating water drainage pipeline G2, a circulating water quality measuring system C2 and a circulating water control system 23; the outlet of a circulating water make-up water pump is communicated with one end of a circulating water make-up water pipeline G1, the other end of the circulating water make-up water pipeline G1 is divided into two paths, wherein one path is communicated with the outlet of the circulating water stabilizer dosing system 3 through a pipeline and then with the cooling tower, the other path is communicated with a circulating water make-up water quality measuring system C1, and the outlet of a pool at the bottom of the cooling tower is communicated with a circulating water drainage pipeline G2 and a circulating water quality measuring system C2 through a water taking pump 11; a circulating water make-up water electromagnetic valve 1 and a circulating water make-up water flowmeter 2 are arranged on the circulating water make-up water pipeline G1; the circulating water make-up water quality measuring system C1 comprises a make-up water pipeline connected with the circulating water make-up water pipeline G1 and a #1 chlorine ion meter 9 arranged on the make-up water pipeline; the circulating water quality measuring system C2 comprises a first pipeline, a second pipeline and a measuring pipeline, wherein one end of the first pipeline and one end of the second pipeline are both communicated with an outlet of the water taking pump 11, the other end of the first pipeline and the other end of the second pipeline are both communicated with the measuring pipeline, a #1 corrosion hanging sheet 17 is arranged in the first pipeline, a #2 corrosion hanging sheet 18 is arranged in the second pipeline, and a pH meter 19, a #2 chlorine ion meter 20 and an alkalimeter 21 are arranged on the measuring pipeline; a temperature monitoring system 4 for detecting the external environment temperature of the cooling tower is arranged on the outer side of the cooling tower, and a cooling tower liquid level meter 5 for detecting the liquid level at the bottom of the cooling tower is arranged at the bottom of the cooling tower; the circulating water control system 23 is connected with a circulating water make-up water electromagnetic valve 1, a circulating water make-up water flowmeter 2, a temperature monitoring system 4, a circulating water stabilizer dosing system 3, a cooling tower liquid level meter 5, a #1 chlorine ion meter 9, a pH meter 19, a #2 chlorine ion meter 20 and an alkalinity meter 21.
A circulating water drainage electromagnetic valve 12 and a circulating water drainage flowmeter 13 are arranged on the circulating water drainage pipeline G2; the make-up water pipeline is provided with a #1 water inlet manual valve 6, a #1 pipeline filter 7, a #1 float flowmeter 8 and a #1 water discharge manual valve 10; the outlet of the water taking pump 11 is communicated with a first pipeline and a second pipeline after passing through a #2 water inlet manual valve 14, a #2 pipeline filter 15 and a #2 float flowmeter 16; and a #2 drainage manual valve 22 is arranged on the measuring pipeline.
The method for timely adjusting and controlling the concentration ratio of the circulating water of the thermal power plant comprises the following steps:
the circulating water make-up water output by the circulating water make-up water pump is divided into two paths, wherein one path enters a circulating water make-up water pipeline G1, and the other path is mixed with the circulating water stabilizer output by the circulating water stabilizer dosing system 3 and then sent into the cooling tower;
the circulating water control system 23 measures the amount of circulating water make-up water in the circulating water make-up water pipeline G1 through the circulating water make-up water flowmeter 2, and adjusts the amount of circulating water make-up water in the circulating water make-up water pipeline G1 through the circulating water make-up water electromagnetic valve 1;
monitoring the liquid level of the cooling tower by a liquid level meter 5 of the cooling tower; detecting the temperature of the surrounding environment of the cooling tower through a temperature monitoring system 4;
dividing liquid at the bottom of a cooling tower, which is extracted by a water pump 11, into two paths, wherein one path enters a circulating water drainage pipeline G2, the other path enters a first pipeline and a second pipeline, and water output by the first pipeline and water output by the second pipeline enter a measuring pipeline;
the amount of the circulating water discharged in the circulating water discharge pipeline G2 is adjusted by the circulating water discharge electromagnetic valve 12, and the amount of the circulating water discharged in the circulating water discharge pipeline G2 is measured by the circulating water discharge flowmeter 13;
the concentration of chloride ions in circulating water replenishing water in a replenishing water pipeline is detected through a #1 chloride ion meter 9, the water quantity of the circulating water replenishing water in the replenishing water pipeline is adjusted through the matching of a #1 water inlet manual valve 6 and a #1 float flowmeter 8, suspended matters in the circulating water replenishing water entering the replenishing water pipeline are removed through a #1 pipeline filter 7, the system is guaranteed not to be blocked by sundries, and a monitoring instrument works normally;
respectively detecting the pH value, the chloride ion concentration and the alkalinity of circulating water in a measuring pipeline through a pH meter 19, a #2 chloride ion meter 20 and an alkalinity meter 21;
the water quantity of circulating water in the circulating water quality measuring system C2 is adjusted by matching the #2 water inlet manual valve 14 and the #2 float flowmeter 16, suspended matters entering the circulating water quality measuring system C2 are removed by the #2 pipeline filter 15, the system is prevented from being blocked by sundries, and a monitoring instrument works normally;
the circulating water control system 23 establishes a function K of the external environment temperature T of the cooling tower and a circulating water concentration multiplying power control value K as f1(T), wherein the circulating water concentration multiplying power K satisfies: k is more than or equal to K-0.5 and less than or equal to K + 0.5;
setting the concentration multiplying power K of the circulating water as B2/B1, wherein B1 is the concentration of the chloride ions in the supplementing water of the circulating water, and B2 is the concentration of the chloride ions in the circulating water;
the corrosion rate X is (m1-m2) × 87600/(S × a × ρ), wherein X is the corrosion rate, m1 is the mass of the corrosion coupon before the experiment, m2 is the mass of the corrosion coupon after the experiment, S is the experiment time, a is the surface area of the corrosion coupon, and ρ is the material density of the corrosion coupon;
setting the liquid level Y of the cooling tower, the highest priority of the control of the circulating water alkalinity JD, the chloride ions L x and the pH value, and then controlling the concentration multiplying power K;
setting the maximum value of the liquid level of the cooling tower as Ymax, the minimum value of the liquid level of the cooling tower as Ymin, controlling the liquid level of the cooling tower to be more than or equal to Y and less than or equal to Ymax, and increasing the opening of the circulating water make-up water electromagnetic valve 1 when the test value Y of the liquid level meter 5 of the cooling tower is lower than Ymin; when the test value Y of the cooling tower liquid level meter 5 is greater than Ymax, the opening degree of the circulating water supplementing water electromagnetic valve 1 is reduced;
controlling the alkalinity JD of the circulating water to be less than or equal to Jdmax, and increasing the opening of a circulating water make-up water electromagnetic valve 1 when the measured value JD of the alkalinity meter 21 is greater than JDmax;
controlling the concentration L x of the chloride ions in the circulating water to be less than or equal to L xmax, and increasing the opening degree of the electromagnetic valve 1 for supplementing water to the circulating water when the measured value L x of the #2 chloride ion meter 20 is greater than L xmax;
controlling the pH value of the circulating water to be less than or equal to pHmax, and increasing the opening of a circulating water supplementing water electromagnetic valve 1 when the pH value of the test value of a pH meter 19 is greater than pHmax;
the circulating water control system 23 constructs a function of the dosing quantity Q of the circulating water stabilizer dosing system 3, the circulating water make-up water quantity Q and the circulating water concentration ratio control value k, wherein k is f2(Q, k), and the dosing quantity Q of the circulating water stabilizer dosing system 3 is controlled according to the function.
Because the circulating water system usually adopts chlorine bactericide to control the growth of microorganisms in the circulating water system at irregular intervals, and the circulating water system does not discharge sewage or reduces the sewage discharge in the period of adding the chlorine bactericide, the circulating water system has to discharge sewageWhen the bypass override control is set, the bypass override control is started, the control system of the equipment fails completely, and the override time t is setBypass pathAfter this time, the present invention is automatically restarted.
The above description is only an example of the implementation steps of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A timely adjusting and controlling system for concentration ratio of circulating water in a thermal power plant is characterized by comprising a circulating water make-up water pump, a circulating water make-up water pipeline (G1), a circulating water stabilizer dosing system (3), a cooling tower, a circulating water make-up water quality measuring system (C1), a water taking pump (11), a circulating water drainage pipeline (G2), a circulating water quality measuring system (C2) and a circulating water control system (23);
the outlet of a circulating water make-up water pump is communicated with one end of a circulating water make-up water pipeline (G1), the other end of the circulating water make-up water pipeline (G1) is divided into two paths, wherein one path is communicated with the outlet of a circulating water stabilizer dosing system (3) through a pipeline and then communicated with a cooling tower, the other path is communicated with a circulating water make-up water quality measuring system (C1), and the outlet of a pool at the bottom of the cooling tower is communicated with a circulating water drainage pipeline (G2) and a circulating water quality measuring system (C2) through a water taking pump (11);
a circulating water supplementing water electromagnetic valve (1) and a circulating water supplementing water flowmeter (2) are arranged on the circulating water supplementing water pipeline (G1);
the circulating water make-up water quality measuring system (C1) comprises a make-up water pipeline connected with the circulating water make-up water pipeline (G1) and a #1 chloride ion meter (9) arranged on the make-up water pipeline;
the circulating water quality measuring system (C2) comprises a first pipeline, a second pipeline and a measuring pipeline, wherein one end of the first pipeline and one end of the second pipeline are both communicated with an outlet of the water taking pump (11), the other end of the first pipeline and the other end of the second pipeline are both communicated with the measuring pipeline, a #1 corrosion hanging sheet (17) is arranged in the first pipeline, a #2 corrosion hanging sheet (18) is arranged in the second pipeline, and a pH meter (19), a #2 chloride ion meter (20) and an alkalinity meter (21) are arranged on the measuring pipeline;
a temperature monitoring system (4) for detecting the external environment temperature of the cooling tower is arranged on the outer side of the cooling tower, and a cooling tower liquid level meter (5) for detecting the liquid level at the bottom of the cooling tower is arranged at the bottom of the cooling tower;
the circulating water control system (23) is connected with a circulating water make-up water electromagnetic valve (1), a circulating water make-up water flowmeter (2), a temperature monitoring system (4), a circulating water stabilizer dosing system (3), a cooling tower liquid level meter (5), #1 chloride ion meter (9), a pH meter (19), #2 chloride ion meter (20) and an alkalinity meter (21).
2. The system for timely adjusting and controlling the concentration ratio of circulating water in a thermal power plant according to claim 1, wherein a circulating water drainage electromagnetic valve (12) and a circulating water drainage flowmeter (13) are arranged on a circulating water drainage pipeline (G2).
3. The timely regulating and controlling system for the concentration rate of circulating water in a thermal power plant according to claim 1, characterized in that a make-up water pipeline is provided with a #1 water inlet manual valve (6), a #1 pipeline filter (7), a #1 float flowmeter (8) and a #1 water discharge manual valve (10).
4. The system for timely adjusting and controlling the concentration ratio of circulating water in a thermal power plant according to claim 1, wherein an outlet of a water taking pump (11) is communicated with a first pipeline and a second pipeline through a #2 water inlet manual valve (14), a #2 pipeline filter (15) and a #2 float flowmeter (16).
5. The timely regulating and controlling system for the concentration ratio of circulating water in a thermal power plant according to claim 1, characterized in that a #2 drainage manual valve (22) is arranged on the measuring pipeline.
6. A method for timely adjusting and controlling concentration ratio of circulating water of a thermal power plant is characterized by comprising the following steps:
circulating water make-up water output by a circulating water make-up water pump is divided into two paths, wherein one path enters a circulating water make-up water pipeline (G1), the other path is mixed with a circulating water stabilizer output by a circulating water stabilizer dosing system (3) and then sent into a cooling tower, liquid at the bottom of the cooling tower extracted by a water pump (11) is divided into two paths, one path enters a circulating water drainage pipeline (G2), the other path enters a first pipeline and a second pipeline, and water output by the first pipeline and water output by the second pipeline enter a measuring pipeline;
the circulating water control system (23) measures the quantity of circulating water make-up water in a circulating water make-up water pipeline (G1) through a circulating water make-up water flowmeter (2), and adjusts the quantity of circulating water make-up water in a circulating water make-up water pipeline (G1) through a circulating water make-up water electromagnetic valve (1);
monitoring the liquid level of the cooling tower by a liquid level meter (5) of the cooling tower; detecting the temperature of the surrounding environment of the cooling tower through a temperature monitoring system (4);
detecting the concentration of chloride ions in circulating water replenishing water in a replenishing water pipeline through a #1 chloride ion meter (9);
respectively detecting the pH value, the chloride ion concentration and the alkalinity of circulating water in a measuring pipeline through a pH meter (19), a #2 chloride ion meter (20) and an alkalinity meter (21);
the circulating water control system (23) establishes a function K of the external environment temperature T of the cooling tower and a circulating water concentration multiplying power control value K as f1(T), wherein the circulating water concentration multiplying power K meets the following requirements: k is more than or equal to K-0.5 and less than or equal to K + 0.5;
setting the concentration multiplying power K of the circulating water as B2/B1, wherein B1 is the concentration of the chloride ions in the supplementing water of the circulating water, and B2 is the concentration of the chloride ions in the circulating water;
setting the maximum value of the liquid level of the cooling tower as Ymax, the minimum value of the liquid level of the cooling tower as Ymin, and increasing the opening degree of a circulating water make-up water electromagnetic valve (1) when the test value Y of a liquid level meter (5) of the cooling tower is lower than Ymin; when the test value Y of the cooling tower liquid level meter (5) is greater than Ymax, the opening degree of the circulating water supplementing water electromagnetic valve (1) is reduced, so that Y is less than or equal to Ymin and less than or equal to Ymax,
when the measured value JD of the alkalinity meter (21) is greater than the preset maximum alkalinity JDmax, the opening degree of the circulating water make-up water electromagnetic valve (1) is increased, so that JD is less than or equal to Jdmax;
when the measured value L x of the #2 chloride ion meter (20) is greater than the preset maximum concentration L xmax, the opening degree of the circulating water make-up water electromagnetic valve (1) is increased, so that L x is less than or equal to L xmax;
when the pH value of the test value of the pH meter (19) is greater than the preset maximum pH value pHmax, the opening degree of the circulating water supplementing water electromagnetic valve (1) is increased, so that the pH value is less than or equal to pHmax;
and the circulating water control system (23) constructs a function of the dosing quantity Q of the circulating water stabilizer dosing system (3), the circulating water make-up water quantity Q and a circulating water concentration multiplying power control value k, wherein k is f2(Q, k), and the dosing quantity Q of the circulating water stabilizer dosing system (3) is controlled according to the function.
7. The method for timely adjusting and controlling the concentration ratio of circulating water in a thermal power plant according to claim 6, wherein the priority of the control of the liquid level Y of the cooling tower, the priority of the control of the alkalinity JD of the circulating water, the priority of the control of the chloride ion L x and the priority of the control of the pH value are the highest, and the control of the concentration ratio K is the next priority.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114910531A (en) * | 2022-04-07 | 2022-08-16 | 浙江西热利华智能传感技术有限公司 | Chloride ion sensor-based concentration ratio online detection system and detection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514248A (en) * | 2003-03-20 | 2004-07-21 | 北京科技大学 | Circulating cooling water quality monitoring system and equipment |
| CN200959088Y (en) * | 2006-09-25 | 2007-10-10 | 北京康安生石化机械有限公司 | Multifunctional controller of industrial circulation cooling water treatment |
| JP2010247063A (en) * | 2009-04-15 | 2010-11-04 | Ebara Engineering Service Co Ltd | Method and apparatus for injection control of chemical for cooling water |
| CN207473382U (en) * | 2017-09-15 | 2018-06-08 | 武汉江汉化工设计有限公司 | A kind of industrial circulating cooling water intelligent operation manages system |
-
2020
- 2020-04-21 CN CN202010319167.XA patent/CN111427392A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514248A (en) * | 2003-03-20 | 2004-07-21 | 北京科技大学 | Circulating cooling water quality monitoring system and equipment |
| CN200959088Y (en) * | 2006-09-25 | 2007-10-10 | 北京康安生石化机械有限公司 | Multifunctional controller of industrial circulation cooling water treatment |
| JP2010247063A (en) * | 2009-04-15 | 2010-11-04 | Ebara Engineering Service Co Ltd | Method and apparatus for injection control of chemical for cooling water |
| CN207473382U (en) * | 2017-09-15 | 2018-06-08 | 武汉江汉化工设计有限公司 | A kind of industrial circulating cooling water intelligent operation manages system |
Non-Patent Citations (2)
| Title |
|---|
| 冯向东 等: "电厂循环冷却水系统极高浓缩倍数运行工程实践", 《工业用水与废水》 * |
| 章智敏 等: "火电厂循环水在线监测与节水管理系统的设计", 《仪表技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114910531A (en) * | 2022-04-07 | 2022-08-16 | 浙江西热利华智能传感技术有限公司 | Chloride ion sensor-based concentration ratio online detection system and detection method |
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