System for suppressing corrosion in the operation of a capacitor

Abstract

A system for suppressing corrosion in the operation of a condenser, characterized in that it comprises a preparation system, the preparation system comprising: a chemical storage container (1) for holding the hydrogen peroxide stock solution; a demineralized water tank (4) for holding demineralized water; a preparation tank (15), wherein the upper surface of the preparation tank has a chemical inlet (13), and wherein the preparation tank (15) is provided with a chemical concentration detector (16); and wherein a chemical basin (10), a cleaning basin (11), and a waste liquid basin (12) are arranged on the upper surface of the preparation tank (15), and wherein the chemical basin (10) is connected to the chemical storage tank (1) via a chemical feed line; and wherein the cleaning basin (11) is connected to the demineralized water tank (4) via a first demineralized water delivery line; and wherein the preparation container (15) is connected to the demineralized water tank (4) via a second demineralized water delivery line, and wherein a second demineralized water control valve (22) is arranged on the second demineralized water delivery line; a chemical sample supply system comprising a chemical sample feeder (8), wherein the chemical sample feeder (8) can be raised and lowered along a first direction and can move between the chemical basin (10), the cleaning basin (11), the waste liquid basin (12) and the chemical inlet (13); and wherein the chemical concentration detector (16) is electrically connected to the chemical sample supply system and the second demineralized water control valve (22), respectively.

Description

TECHNICAL FIELD

[0001] The present invention relates to the technical field of corrosion prevention in capacitors, in particular to a system for suppressing corrosion during operation of a capacitor. STATE OF THE ART

[0002] The carbon steel structure of a direct air-cooled condenser is located in a wet steam environment with a high flow rate, low pH, and negative pressure. Mechanical and chemical factors interact to accelerate the occurrence of corrosion. The main reasons for the occurrence of corrosion are that the maximum average flow velocity of the low-pressure cylinder exhaust gas can reach 80 m / s, and turbulence is generated by pipeline deflections and cross-sectional changes, resulting in locally higher flow velocities, which intensifies the erosive effect of the initial condensate on the carbon steel surfaces. During the condensation process of the low-pressure cylinder exhaust gas in the air-cooled condenser, ammonia and oxygen are redistributed between the vapor phase and the liquid phase.According to Henry's law, ammonia is predominantly distributed in the vapor phase and hardly dissolves in the liquid film, resulting in a low pH value of the condensate. At the same time, low-volatility corrosive ions such as Cl and SO accumulate. 2- from the steam in the condensate, further lowering the pH value in the liquid phase and accelerating the dissolution of the metal oxide film. Under negative pressure conditions, the initial condensate from the low-pressure cylinder exhaust gas on the carbon steel surface is virtually oxygen-free. At water temperatures between 50-70°C, a stable protective film cannot form, which significantly reduces erosion resistance.

[0003] Corrosion suppression is crucial. Sudden flow changes can be avoided through structural modifications of the system, or the surface can be treated with locally applied corrosion-resistant materials. However, these measures are not feasible for direct air cooling systems already in operation.

[0004] Therefore, a chemical approach is required for direct air cooling systems already in operation: by adding oxidizing additives with a high liquid phase partition coefficient to the air cooling condenser exhaust gas, the redox potential of the liquid film on the carbon steel surface can be increased, which promotes the formation of a dense, stable protective oxide film and thus reduces corrosion of the air cooling condenser system.

[0005] In the existing technology, chemicals are introduced into a preparation tank by means of dosing pumps, which leads to technical problems that the prepared chemicals have fluctuations in concentration and the concentration is unstable and imprecise. CONTENT OF THE PRESENT INVENTION

[0006] A first aspect of the present invention provides a system for suppressing corrosion in the operation of a condenser to solve the technical problems in the existing technology that chemicals are introduced into a preparation tank by means of metering pumps, which leads to technical problems that the prepared chemicals have fluctuations in concentration and the concentration is unstable and imprecise.

[0007] A first aspect of the present invention provides a system for suppressing corrosion in the operation of a capacitor, comprising a preparation system, the preparation system comprising: a chemical storage container for holding the hydrogen peroxide stock solution; a demineralized water tank for holding demineralized water; a preparation tank, the upper surface of the preparation tank having a chemical inlet, and the preparation tank being provided with a chemical concentration detector; and a chemical basin, a cleaning basin, and a waste liquid basin being arranged on the upper surface of the preparation tank, the chemical basin being connected to the chemical storage tank via a chemical delivery line; the cleaning basin being connected to the demineralized water tank via a first demineralized water delivery line; the preparation tank being connected to the demineralized water tank via a second demineralized water delivery line, and a second demineralized water control valve being arranged on the second demineralized water delivery line; a chemical sample delivery system comprising a chemical sample feeder, the chemical sample feeder being capable of being raised and lowered along a first direction and moving between the chemical basin, the cleaning basin, the waste liquid basin, and the chemical inlet; and wherein the chemical concentration detector is electrically connected to the chemical sample supply system and the second demineralized water control valve, respectively.

[0008] It is further provided that the chemical basin, the cleaning basin, and the waste liquid basin are arranged sequentially along a second direction; wherein the chemical sample supply system comprises a chemical sample supply arm arranged on the preparation container, and wherein the chemical sample supply arm is located above the chemical basin, the cleaning basin, and the waste liquid basin and extends along the second direction; and wherein the chemical sample feeder is slidably connected to the chemical sample supply arm along the first direction and the second direction, respectively; or wherein the chemical sample feeder is fixedly arranged on the chemical sample supply arm, and wherein the chemical sample supply arm is slidably connected to the preparation container along the first direction, and wherein the chemical sample supply arm is telescopic along the second direction; and wherein the second direction is parallel to the upper surface of the preparation container and perpendicular to the first direction.

[0009] It is further provided that a chemical control valve is arranged on the chemical delivery line; wherein a first pressure sensor is arranged between the chemical basin and the preparation container, which is electrically connected to the chemical control valve, and wherein the first pressure sensor is configured such that the chemical control valve is opened when the pressure value of the chemical basin measured by the first pressure sensor is less than a first preset pressure value, and the chemical control valve is closed when the pressure value of the chemical basin measured by the first pressure sensor is greater than a second preset pressure value; and wherein the first preset pressure value is less than the second preset pressure value; and / or wherein a first control valve for demineralized water is arranged on the first delivery line for demineralized water;and wherein a second pressure sensor is arranged between the cleaning basin and the preparation container, which second pressure sensor is electrically connected to the first demineralized water control valve, and wherein the second pressure sensor is configured such that the first demineralized water control valve is opened when the pressure value of the cleaning basin measured by the second pressure sensor is less than a third preset pressure value, and the first demineralized water control valve is closed when the pressure value of the cleaning basin measured by the second pressure sensor is greater than a fourth preset pressure value; and wherein the third preset pressure value is less than the fourth preset pressure value; and / or wherein the second demineralized water delivery line is provided with a demineralized water atomizer, a second demineralized water pump, and a first back-pressure valve, and wherein the demineralized water atomizer is located in the preparation container, and wherein the first back-pressure valve is arranged on a pipe connected to the outlet end of the second demineralized water pump, and wherein the second demineralized water pump and the first back-pressure valve are each electrically connected to the second demineralized water control valve; and / or wherein the upper surface of the preparation container is provided with a liquid level gauge used to measure the liquid level in the preparation container, and wherein the liquid level gauge is electrically connected to each of the chemical concentration detector, the chemical sample supply system, and the second demineralized water control valve; and / or wherein a return line provided with a return pump is arranged between the chemical outlet end of the chemical concentration detector and the preparation container, and wherein the return pump is electrically connected to the chemical concentration detector; and / or wherein the preparation container is provided with a liquid outlet line and a thermometer, and wherein the liquid outlet line is located at the bottom of the preparation container, and wherein the liquid outlet line is provided with a liquid outlet control valve; and wherein the thermometer is used to measure the temperature of the chemicals in the preparation container; and wherein the thermometer is electrically connected to the liquid outlet control valve, and wherein the thermometer and the liquid outlet control valve are configured such that, when the temperature of the chemicals in the preparation container measured by the thermometer is higher than a first preset temperature value, the liquid outlet control valve is opened for liquid discharge and the second demineralized water control valve is opened for water refilling and cooling.

[0010] It is further provided that the system for suppressing corrosion during operation of a condenser further comprises a dosing system comprising a dosing liquid line, one end of the dosing liquid line being connected to the preparation container, and the other end of which is connected to an exhaust line; and wherein the dosing liquid line is provided, along the transfer direction of the liquid chemicals, in succession with a first control valve for dosing, a second backpressure valve, a flow meter for dosing, and an atomizing nozzle for dosing, and wherein the atomizing nozzle for dosing is arranged in the exhaust line.

[0011] It is further contemplated that the system for suppressing corrosion in the operation of a condenser further comprises a chemical monitoring system comprising a condensate sampling system, and wherein the condensate sampling system comprises a condensate collection tank, a first condensate conveying line, and a second condensate conveying line, and wherein the first condensate conveying line is connected between the exhaust line and the water inlet end of the condensate collection tank; and wherein the second condensate conveying line is connected to the water outlet end of the condensate collection tank, and wherein the second condensate conveying line is provided with an iron meter used to measure the iron concentration in the condensate, and wherein the iron meter is electrically connected to the flow meter for dosing.

[0012] It is further provided that the system for suppressing corrosion in the operation of a capacitor further comprises a detection system comprising a reagent pack liquid container, a reagent delivery line, a detection basin, and a spectrophotometer, wherein the reagent pack liquid container is used to hold a mixed solution of catalase, guaiacol / ethanol solution, and potassium hydrogen phthalate-sodium hydroxide buffer solution; and wherein the reagent delivery line is provided with a reagent pack liquid control valve and a first quantification ring; and wherein the reagent delivery line is connected between the reagent pack liquid container and the detection basin to deliver the mixed solution into the detection basin. and wherein the chemical monitoring system further comprises a third condensate delivery line provided with a condensate sampling control valve and a second quantification ring; and wherein the third condensate delivery line is connected in parallel to the second condensate delivery line and is connected to the detection basin; and wherein the spectrophotometer is used to measure the light absorption value of the liquid in the detection basin.

[0013] It is further provided that the chemical monitoring system further comprises a purification system comprising a third demineralized water delivery line, wherein the third demineralized water delivery line is connected to the third condensate delivery line, and wherein the third demineralized water delivery line is provided with a third demineralized water control valve.

[0014] The present invention provides a system for suppressing corrosion in the operation of a capacitor, which has at least the following advantages: (1) In a system for suppressing corrosion in the operation of a capacitor provided by the present invention, the chemical sample supply system is improved. On the one hand, a chemical sample supply is used to realize micro-dosing, which improves the accuracy of controlling the amount of chemical samples and the accuracy of controlling the concentration of the chemicals. On the other hand, the chemical sample supply performs cleaning and rinsing of the chemicals before each chemical withdrawal to ensure the concentration of the chemicals supplied to the preparation tank and prevent the introduction of other contaminants into the preparation tank. (2) A first pressure sensor electrically connected to the chemical control valve is provided to realize the monitoring and automatic replenishment of the hydrogen peroxide stock solution in the chemical basin, ensure the smooth withdrawal of the chemicals by the chemical sample feeder, and improve the withdrawal efficiency of the chemical sample feeding system. (3) A second pressure sensor electrically connected to the first demineralized water control valve is provided to realize the monitoring and automatic replenishment of demineralized water in the purification tank, provide a prerequisite for the cleaning of the chemical sample feeder, and improve the sampling efficiency of the chemical sample feeder. (4) The automatic metering of the exhaust pipe is realized, so that the corrosion rate of the exhaust pipe of the condenser is significantly reduced, which extends the service life of the condenser and saves costs. (5) To realize the monitoring of hydrogen peroxide concentration in the condensate by arranging a detection system; the spectrophotometer is electrically connected to the dosing flow meter to realize the control of the dosing flow rate, which prevents the waste of chemicals and ensures the economy of dosing.

[0015] A second aspect of the present invention provides a method for suppressing corrosion in the operation of a capacitor, which is used for the above system for suppressing corrosion in the operation of a capacitor, the method comprising the following steps: S200: Preparation, where the preparation comprises the following steps: S210: Injecting demineralized water, wherein the injection of demineralized water comprises the following steps. S211: Controlling the opening of the second demineralised water control valve, supplying demineralised water through the second demineralised water supply line into the preparation tank; S212: controlling the liquid level meter to measure the liquid level in the preparation container, and, if the liquid level in the preparation container is higher than a first preset liquid level, executing step S220; S220: Injecting the hydrogen peroxide stock solution, wherein the injection of the hydrogen peroxide stock solution comprises the following steps: S221: Controlling the chemical sample feeder to move to the chemical basin to collect the hydrogen peroxide stock solution; S222: Controlling the chemical sample feeder to move to the chemical inlet to deliver the hydrogen peroxide stock solution into the preparation container; S230: Controlling the measurement of the concentration of chemicals and the liquid level, wherein the control of the measurement of the concentration of chemicals and the liquid level comprises the following steps: S231: Controlling the chemical concentration detector to measure the concentration of the chemicals in the preparation container; S232: Determining a magnitude relationship between the concentration of the chemicals in the preparation container and a target value of the concentration of the chemicals and determining a magnitude relationship between the liquid level in the preparation container and a second preset liquid level; S233: Closing the second demineralized water control valve and stopping the withdrawal and delivery of the hydrogen peroxide stock solution by the chemical sample feeder when the concentration of the chemicals in the preparation tank reaches the target concentration of the chemicals and the liquid level in the preparation tank reaches the second preset liquid level; S234: Execute step S210 when the concentration of the chemicals in the preparation container reaches a target value of the concentration of the chemicals and the liquid level in the preparation container is lower than the first preset liquid level.

[0016] The method further comprises the following after step S233: S300: Dosing, wherein the dosing comprises the following steps: controlling the opening of the first dosing control valve, the second backpressure valve, and the dosing flow meter, delivering the hydrogen peroxide chemicals at a target chemical concentration and a preset flow rate through the dosing atomizing nozzle into the exhaust line; executing step S400; S400: Controlling the detection and feedback, wherein the control of the detection and feedback comprises the following steps: S410: Measuring the hydrogen peroxide concentration in the condensate, comprising the following steps: S411: Controlling the opening of the third control valve for demineralized water, flushing of the third condensate conveying line and the detection basin; S412: Controlling the opening of the condensate sampling control valve and closing the condensate sampling control valve after the condensate sample has been pumped through the second quantification ring into the detection basin; S413: Controlling the opening of the reagent pack liquid control valve and closing the reagent pack liquid control valve after the mixed solution is pumped into the detection basin through the first quantification ring; S414: Mixing the condensate sample and the mixed solution for a first preset period of time until a uniform state to form a reaction solution, controlling the spectrophotometer to measure the light absorption value of the reaction solution; S415: Determining the hydrogen peroxide concentration in the condensate based on a preset relationship between the light absorption value and the hydrogen peroxide concentration; executing step S411; S420: Controlling the feedback of the iron concentration in the condensate, comprising the following steps: S421: Control the iron meter to measure the iron concentration in the condensate water; S422: Determining a magnitude relationship between the iron concentration in the condensate and a preset value of the iron concentration; S423: Increase the preset flow rate of the metering flowmeter when the iron concentration in the condensate is greater than a preset iron concentration value; execute step S424 when the iron concentration in the condensate is less than a preset iron concentration value; S424: Determining a magnitude relationship between the hydrogen peroxide concentration in the condensate and a preset value of the hydrogen peroxide concentration; S425: Reduce the preset flow rate of the dosing flow meter when the hydrogen peroxide concentration in the condensate is greater than the preset value of the hydrogen peroxide concentration.

[0017] The method further comprises, prior to the step of injecting the hydrogen peroxide stock solution, step S100 for preparing chemicals and rinsing, wherein the preparing chemicals and rinsing comprise the following steps: S110: Control the opening of the chemical control valve, pumping the hydrogen peroxide stock solution through the chemical delivery line into the chemical basin; S120: Controlling the opening of the first demineralised water control valve, conveying demineralised water through the first demineralised water conveying line into the purification tank; S130: Controlling the chemical sample feeder to move to the cleaning basin to collect demineralised water for cleaning, then controlling the chemical sample feeder to move to the waste liquid basin to discharge the demineralised water used for cleaning into the waste liquid basin; S140: Control the chemical sample feeder to move to the chemical basin to collect the hydrogen peroxide stock solution for rinsing, then control the chemical sample feeder to move to the waste liquid basin to discharge the hydrogen peroxide stock solution used for rinsing into the waste liquid basin.

[0018] The present invention provides a method for suppressing corrosion in the operation of a capacitor, which has at least the following advantages: (1) By designing an automatic chemical preparation system, a uniform dosage of hydrogen peroxide solution in the preparation tank is realized, while the target concentration of the chemicals is always maintained; (2) By monitoring the iron content in the condensate, the corrosion state of the condenser piping is monitored, and the dosing flow rate is adjusted based on the iron content, thereby reducing the corrosion rate of the condenser piping, extending the service life of the condenser, and reducing maintenance costs; (3) By measuring the hydrogen peroxide concentration in the condensate water, the dosing flow rate is adjusted based on the hydrogen peroxide concentration and iron content, thus preventing the waste of chemicals and ensuring the economy of dosing. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a schematic diagram of a system for suppressing corrosion in the operation of a capacitor provided by the embodiments of the present invention; Fig. 2 shows a schematic flow diagram of a method for suppressing corrosion in the operation of a capacitor provided by the embodiments of the present invention. List of reference symbols 1 chemical storage container 2 chemical control valve 3 Chemical pump 4 tank for demineralized water 5 First control valve for demineralized water 6 First pump for demineralized water 7 Chemical sample introduction arm 8 chemical sample feeders 10 chemical tanks 11 cleaning basins 12 waste liquid basins 13 Chemical inlet 14 liquid level gauges 15 preparation containers 16 Chemical Concentration Detector 17 Return pump 18 thermometers 19 atomizers for demineralized water 20 Check valve 21 Drain valve 22 Second control valve for demineralized water 23 Second pump for demineralized water 24 First back pressure valve 25 First control valve for dosing 26 Dosing pump 27 Second back pressure valve 28 Second control valve for dosing 29 Flowmeters for dosing 30 Third back pressure valve 31 Third control valve for dosing 32 atomizing nozzle for dosing 33 Exhaust pipe 34 condensate collection tanks 35 Condensate pump 36 reagent pack liquid containers 37 Third control valve for demineralized water 38 Reagent pack fluid control valve 39 Control valve for condensate sampling 40 Monitoring and control box for dosing 41 Control unit 42 Display screen 43 Five-way valve 144 First pump body 45 Second pump body 46 First quantification ring 47 Second quantification ring 48 detection tanks 49 spectrophotometers 50 iron measuring device DETAILED DESCRIPTION

[0019] In the following, the specific embodiments of the present invention will be described in connection with Fig. 1 to 2 in order that the above purposes, features and advantages of the present invention become clearer and easier to understand.

[0020] With reference to Fig. 1, a first aspect of the embodiments of the present invention provides a system for suppressing corrosion in the operation of a condenser, comprising a preparation system including a chemical storage tank 1, a demineralized water tank 4, a preparation tank 15, and a chemical sample supply system, wherein the chemical storage tank 1 is used to hold the hydrogen peroxide stock solution; and wherein the demineralized water tank 4 is used to hold demineralized water; and wherein the upper surface of the preparation tank 15 has a chemical inlet 13, and wherein the preparation tank 15 is provided with a chemical concentration detector 16;and wherein a chemical basin 10, a cleaning basin 11, and a waste liquid basin 12 are arranged on the upper surface of the preparation tank 15, and wherein the chemical basin 10 is connected to the chemical storage tank 1 via a chemical delivery line; and wherein the cleaning basin 11 is connected to the demineralized water tank 4 via a first demineralized water delivery line; and wherein the preparation tank 15 is connected to the demineralized water tank 4 via a second demineralized water delivery line, and wherein a second demineralized water control valve 22 is arranged on the second demineralized water delivery line;and wherein the chemical sample supply system comprises a chemical sample feeder 8 that can be raised and lowered along a first direction and can move between the chemical tank 10, the cleaning tank 11, the waste liquid tank 12, and the chemical inlet 13; and wherein the chemical concentration detector 16 is electrically connected to the chemical sample supply system and the second demineralized water control valve 22, respectively.

[0021] It should be noted that the chemical sample feeder 8 is capable of moving between the chemical tank 10, the cleaning tank 11, and the waste liquid tank 12, being raised and lowered along the first direction to protrude into the chemical tank 10 and collect the hydrogen peroxide stock solution, and protruding from the chemical tank 10 and moving into the chemical inlet 13, thereby conveying the collected hydrogen peroxide stock solution through the chemical inlet 13 into the preparation tank 15; being raised and lowered along the first direction to protrude into the cleaning tank 11 and collect demineralized water for cleaning, and discharging the collected demineralized water into the waste liquid tank 12;and to be raised and lowered along the first direction to protrude into the chemical basin 10 and collect the hydrogen peroxide stock solution for rinsing and to discharge the collected hydrogen peroxide stock solution into the waste liquid basin 12;

[0022] It should be noted that each time the chemical sample feeder 8 collects the chemicals in the chemical pool 10, a residue of the chemicals remains on the wall of the pipe of the chemical sample feeder 8, the chemical sample feeder 8 is connected to the atmosphere, and the residue of the chemicals decomposes.In order to ensure that the concentration of the chemicals collected each time does not deviate from the concentration of the chemical stock solution, before the chemical sample feeder 8 collects the chemicals, the chemical sample feeder 8 first collects demineralized water for cleaning in the cleaning tank 11, then the chemical sample feeder 8 collects the chemical stock solution for rinsing in the chemical tank 10 to guarantee the concentration of the chemical stock solution collected each time and fed into the preparation tank 15, and to prevent the introduction of other impurities into the preparation tank 15 and avoid contamination of the preparation tank 15.

[0023] It should be noted that the chemical sample feeder 8 is a feeding needle that can realize the feeding of chemical samples in the micro range, and, compared with the metering pump, precisely controls the amount of the chemical samples, so that fluctuations in the concentration of the chemicals in the preparation container 15 due to the inappropriate control of the frequency of the metering pump are avoided, thereby improving the stability and accuracy of the concentration of the prepared chemicals.

[0024] In a system for suppressing corrosion in the operation of a capacitor, which is provided by the embodiments of the present invention, the chemical sample supply system is improved. On the one hand, a chemical sample supply 8 is used to realize microdosing, which improves the accuracy of controlling the amount of chemical samples and the accuracy of controlling the concentration of the chemicals. On the other hand, the chemical sample supply 8 performs cleaning and rinsing of the chemicals before each withdrawal of the chemicals in order to guarantee the concentration of the chemicals supplied to the preparation container 15 and to prevent the introduction of other contaminants into the preparation container 15.

[0025] In one embodiment of the present invention, the chemical inlet 13 is provided with a seal to prevent the ingress of dust, and the chemical sample feeder 8 can pierce the seal to inject the chemicals into the preparation container 15.

[0026] With reference to Fig. 1, in the embodiment of the present invention, the chemical tank 10, the cleaning tank 11, and the waste liquid tank 12 are arranged sequentially along a second direction; wherein the chemical sample supply system comprises a chemical sample supply arm 7 arranged on the preparation container 15, and wherein the chemical sample supply arm 7 is located above the chemical tank 10, the cleaning tank 11, and the waste liquid tank 12 and extends along the second direction, and wherein the second direction is oriented parallel to the upper surface of the preparation container 15 and perpendicular to the first direction.

[0027] In one embodiment of the present invention, the chemical sample feeder 8 is connected to the chemical sample feeder arm 7 so as to be displaceable along the first direction and the second direction, respectively.

[0028] In one embodiment of the present invention, the preparation container 15 is particularly fixedly provided with a column, one end of the chemical sample supply arm 7 being fixedly arranged on the column, and the chemical sample supply arm 7 comprising a guide rail to which a sliding block is slidably connected along the second direction, and the sliding block has a guide hole along the first direction, and the chemical sample feeder 8 is slidably connected to the guide hole.

[0029] In one embodiment of the present invention, the preparation container 15 is particularly fixedly provided with a column, one end of the chemical sample supply arm 7 being fixedly arranged on the column, and the chemical sample supply arm 7 comprising a first guide rail to which a first sliding block is slidably connected along the second direction, and the first sliding block is fixedly provided with a second guide rail to which a second sliding block is slidably connected along the first direction, and the chemical sample feeder 8 is fixedly arranged on the second sliding block.

[0030] In one embodiment of the present invention, the chemical sample feeder 8 is fixedly arranged on the chemical sample feed arm 7, in another embodiment the chemical sample feeder 8 is fixedly arranged on the chemical sample feed arm 7, wherein the chemical sample feed arm 7 is slidably connected to the preparation container 15 along the first direction, and wherein the chemical sample feed arm 7 is telescopic along the second direction.

[0031] Specifically, in the embodiment of the present invention, the preparation container 15 is fixedly provided with a first linear drive component capable of moving along the first direction; the chemical sample supply arm 7 is a second linear drive component capable of moving along the second direction, and a fixed end of the second drive component is fixedly disposed at a power output end of the first linear drive component, and the chemical sample supply arm 8 is fixedly disposed at a power output end of the second drive component; and the first linear drive component and the second linear drive component are an electric push rod or an electric cylinder.

[0032] With reference to Fig. 1, a chemical control valve 2 is arranged on the chemical delivery line in the exemplary embodiment of the present invention; wherein a first pressure sensor is arranged between the chemical basin 10 and the preparation container 15, which first pressure sensor is electrically connected to the chemical control valve 2, and wherein the first pressure sensor is configured such that the chemical control valve 2 is opened when the pressure value of the chemical basin 10 measured by the first pressure sensor is less than a first preset pressure value, and the chemical control valve 2 is closed when the pressure value of the chemical basin 10 measured by the first pressure sensor is greater than a second preset pressure value; and wherein the first preset pressure value is less than the second preset pressure value.

[0033] It should be noted that the first preset pressure value is the maximum loading capacity of the chemical tank 10, and the second preset pressure value is 5% to 15% of the maximum loading capacity of the chemical tank 10. Preferably, the second preset pressure value is 10% of the maximum loading capacity of the chemical tank 10.

[0034] In a system for suppressing corrosion in the operation of a condenser provided by the embodiments of the present invention, a first pressure sensor electrically connected to the chemical control valve 2 is arranged to realize the monitoring and automatic replenishment of the hydrogen peroxide stock solution in the chemical basin 10, ensure the smooth withdrawal of the chemicals by the chemical sample feeder 8, and improve the withdrawal efficiency of the chemical sample feed system.

[0035] With reference to Fig. 1, in the embodiment of the present invention, the chemical delivery line is further provided with a chemical pump 3 arranged on a pipe connected to the outlet end of the chemical control valve 2, the chemical pump 3 being electrically connected to the chemical control valve 2.

[0036] With reference to Fig. 1, in the exemplary embodiment of the present invention, a first demineralized water control valve 5 is arranged on the first demineralized water delivery line; wherein a second pressure sensor is arranged between the purification basin 11 and the preparation container 15, which second pressure sensor is electrically connected to the first demineralized water control valve 5, and wherein the second pressure sensor is configured such that the first demineralized water control valve 5 is opened when the pressure value of the purification basin 11 measured by the second pressure sensor is less than a third preset pressure value, and the first demineralized water control valve 5 is closed when the pressure value of the purification basin 11 measured by the second pressure sensor is greater than a fourth preset pressure value; and wherein the third preset pressure value is less than the fourth preset pressure value.

[0037] It should be noted that the third preset pressure value is the maximum loading capacity of the cleaning tank 11, and the fourth preset pressure value is 5% to 15% of the maximum loading capacity of the cleaning tank 11. Preferably, the fourth preset pressure value is 10% of the maximum loading capacity of the cleaning tank 11.

[0038] In a system for suppressing corrosion in the operation of a condenser provided by the embodiments of the present invention, a second pressure sensor electrically connected to the first demineralized water control valve 5 is arranged to realize the monitoring and automatic replenishment of demineralized water in the cleaning tank 11, provide a prerequisite for cleaning the chemical sample feeder 8, and improve the sampling efficiency of the chemical sample feeder 8.

[0039] In the embodiment of the present invention, a first demineralized water pump 6 is arranged on the first demineralized water delivery line, which first demineralized water pump 6 is provided with a pipe connected to the outlet end of the first demineralized water control valve 5, the first demineralized water pump 6 being electrically connected to the first demineralized water control valve 5.

[0040] With reference to Fig. 1, in the embodiment of the present invention, the second demineralized water delivery line is provided with a demineralized water atomizer 19, a second demineralized water pump 23 and a first back pressure valve 24, wherein the demineralized water atomizer 19 is located in the preparation container 15, and wherein the first back pressure valve 24 is arranged on a pipe connected to the outlet end of the second demineralized water pump 23, and wherein the second demineralized water pump 23 and the first back pressure valve 24 are each electrically connected to the second demineralized water control valve 22.In this way, the outlet pressure of the demineralized water atomizer 19 is increased to facilitate atomization into small liquid droplets; the small liquid droplets ejected from the demineralized water atomizer 19 come into complete contact with and mix with the hydrogen peroxide stock solution.

[0041] With reference to Fig. 1, in the embodiment of the present invention, the upper surface of the preparation tank 15 is provided with a liquid level gauge 14 used to measure the liquid level in the preparation tank 15, wherein the liquid level gauge 14 is electrically connected to the chemical concentration detector 16, the chemical sample supply system, and the second demineralized water control valve 22, respectively; and wherein the liquid level gauge 14 and the chemical concentration detector 16 are configured such that, when the liquid level in the preparation tank 15 measured by the liquid level gauge 14 is higher than a first preset liquid level, the chemical sample supply device 8 is turned on, collects the hydrogen peroxide stock solution, and supplies it into the preparation tank 15;when the concentration of the chemicals measured by the chemical concentration detector 16 reaches the target value of the concentration of the chemicals and the liquid level in the preparation container 15 measured by the liquid level gauge 14 reaches a second preset liquid level, the second demineralized water control valve 22 is turned off and the chemical sample feeder 8 stops taking out and feeding the hydrogen peroxide stock solution;When the concentration of chemicals in the preparation tank 15 reaches the target concentration of chemicals and the liquid level in the preparation tank 15 is lower than the first preset liquid level, the chemical sample feeder 8 is turned on, collects the hydrogen peroxide stock solution, and delivers it to the preparation tank 15, and opens the second demineralized water control valve 22 to maintain the concentration of chemicals in the preparation tank 15 at the target concentration of chemicals; and wherein the first preset liquid level is lower than the second preset liquid level. In this way, automated preparation of the chemicals in the preparation tank 15 is realized.

[0042] In the embodiment of the present invention, the preparation container 15 has a highest liquid level, wherein the second preset liquid level is the highest liquid level; and wherein the first preset liquid level is 0.2 to 0.4 times the highest liquid level, and preferably the first preset liquid level is 1 / 3 of the highest liquid level.

[0043] In the embodiment of the present invention, the target concentration of the chemicals is in the range of 0.08% to 0.12%; preferably, the target concentration of the chemicals is 0.1%.

[0044] It should be noted that the type of liquid level gauge 14 is unlimited and can be a float liquid level gauge, an ultrasonic liquid level gauge, a radar liquid level gauge, and other conventional liquid level gauges. In the embodiment of the present invention, the liquid level gauge 14 is preferably a radar liquid level gauge.

[0045] With reference to Fig. 1, a return line is arranged between the chemical outlet end of the chemical concentration detector 16 and the preparation tank 15, which return line is provided with a return pump 17, the return pump 17 being electrically connected to the chemical concentration detector 16. Such an arrangement prevents the waste of chemicals.

[0046] With reference to Fig. 1, in the embodiment of the present invention, the preparation container 15 is provided in one embodiment with a liquid outlet line and a thermometer 18, wherein the liquid outlet line is located at the bottom of the preparation container 15, and wherein the liquid outlet line is provided with a liquid outlet control valve; and wherein the thermometer 18 is used to measure the temperature of the chemicals in the preparation container 15;and wherein the thermometer 18 is electrically connected to the liquid outlet control valve, and wherein the thermometer 18 and the liquid outlet control valve are configured such that, when the temperature of the chemicals in the preparation tank 15 measured by the thermometer 18 is higher than a first preset temperature value, the liquid outlet control valve is opened for liquid discharge and the second demineralized water control valve 22 is opened for water replenishment and cooling. Since the temperature in the preparation tank 15 is too high, the diluted hydrogen peroxide tends to decompose. To ensure that the hydrogen peroxide in the preparation tank 15 is maintained at the target chemical concentration, it is therefore necessary to limit the temperature of the chemicals in the preparation tank 15 within a certain range.

[0047] In the embodiment of the present invention, the waste liquid basin 12 is provided with an overflow hole to which a waste liquid conveying line is connected. This allows for automatic drainage of the cleaning and rinsing liquid from the chemical sample feeder 8.

[0048] With reference to Fig. 1, the waste liquid conveying line in the embodiment of the present invention is provided with a check valve 20; wherein the liquid outlet line is connected to the waste liquid conveying line.

[0049] In the embodiment of the present invention, in another embodiment, the preparation container 15 is provided with a heat dissipation device, wherein a cooling coil and a thermometer 18 are arranged in the preparation container 15, and wherein a coolant control valve is connected to the cooling coil, and wherein the thermometer 18 is used to measure the temperature of the chemicals in the preparation container 15; and wherein the thermometer 18 is electrically connected to the coolant control valve, and wherein the thermometer 18 and the coolant control valve are configured such that when the temperature of the chemicals in the preparation container 15 measured by the thermometer 18 is higher than the first preset temperature value, the coolant control valve is opened for cooling.

[0050] It should be noted that the first preset temperature value is in a range between 30°C and 50°C.

[0051] With reference to Fig. 1, the system for suppressing corrosion in the operation of a condenser in one embodiment of the present invention further comprises a dosing system comprising a dosing liquid line, one end of which is connected to the preparation container 15, and the other end of which is connected to an exhaust line 33; and wherein the dosing liquid line is provided, along the transfer direction of the liquid chemicals, in sequence with a first dosing control valve 25, a second backpressure valve 27, a dosing flow meter 29, and a dosing atomizing nozzle 32, and wherein the dosing atomizing nozzle 32 is arranged in the exhaust line 33. In this way, automatic dosing of the exhaust line 33 is realized, so that the corrosion rate of the exhaust line 33 of the condenser is significantly reduced, which extends the service life of the condenser and saves costs.

[0052] It should be noted that the dosing flow meter 29 is an electromagnetic flow meter; the dosing flow meter 29 is used to control the amount of hydrogen peroxide supplied in the exhaust line 33.

[0053] With reference to Fig. 1, in the embodiment of the present invention, a dosing pump 26 is arranged on the dosing liquid line between the first dosing control valve 25 and the second backpressure valve 27; and / or a second dosing control valve 28 is arranged on the dosing liquid line between the second backpressure valve 27 and the dosing flow meter 29; and / or a third backpressure valve 30 and a third dosing control valve 31 are arranged one after the other on the dosing liquid line between the dosing flow meter 29 and the dosing atomizing nozzle 32.

[0054] It should be noted that the dosing pump 26 is a constant flow pump for delivering hydrogen peroxide at a target concentration of the chemicals; and the second back pressure valve 27 and / or the third back pressure valve 30 is used to increase the pressure upstream of the dosing atomizing nozzle 32 so that the chemicals in the dosing atomizing nozzle 32 are dispersed into tiny droplets that drip into the exhaust line 33.

[0055] With reference to Fig. 1, the system for suppressing corrosion in the operation of a condenser in the embodiment of the present invention further comprises a chemical monitoring system comprising a condensate sampling system, and wherein the condensate sampling system comprises a condensate collection tank 34, a first condensate conveying line, and a second condensate conveying line, and wherein the first condensate conveying line is connected between the exhaust line 33 and the water inlet end of the condensate collection tank 34; and wherein the second condensate conveying line is connected to the water outlet end of the condensate collection tank 34, and wherein the second condensate conveying line is provided with an iron meter 50 used to measure the iron concentration in the condensate;and wherein the iron meter 50 is electrically connected to the dosing flow meter 29, and wherein the iron meter 50 and the dosing flow meter 29 are configured such that the flow rate of the dosing flow meter 29 is increased when the iron concentration of the condensate measured by the iron meter 50 is greater than a preset iron concentration value.;

[0056] It should be noted that the dosing flow meter 29 has a preset flow rate, and if the iron concentration in the condensate measured by the iron meter 50 is greater than the preset value of the iron concentration, the preset flow rate of the dosing flow meter 29 is increased.

[0057] In the embodiment of the present invention, the preset flow rate of the dosing flow meter 29 is between 10 and 100 mL / s.

[0058] An embodiment of the present invention provides a system for suppressing corrosion in the operation of a condenser, which realizes online monitoring of the iron content in the condensate with the arrangement of the iron meter 50 and dynamic adjustment of the dosing flow rate based on the iron concentration in the condensate through an electrical connection between the iron meter 50 and the dosing flow meter 29 in order to reduce the corrosion rate of the exhaust line 33 of the condenser, extend the service life of the condenser and improve the stability of the condenser operation.

[0059] In the embodiment of the present invention, the preset value of the iron concentration is in the range of 0.08 L to 0.12 L; preferably, the preset value of the iron concentration is 2 µg / L.

[0060] With reference to Fig. 1, the system for suppressing corrosion in the operation of a capacitor in the embodiment of the present invention further comprises a detection system including a reagent pack liquid container 36, a reagent supply line, a detection basin 48, and a spectrophotometer 49. The reagent pack liquid container 36 is used to contain a mixed solution of catalase, guaiacol / ethanol solution, and potassium hydrogen phthalate-sodium hydroxide buffer solution; the reagent supply line is provided with a reagent pack liquid control valve 38 and a first quantification ring 46; the reagent supply line is connected between the reagent pack liquid container 36 and the detection basin 48 to supply the mixed solution into the detection basin 48.and wherein the chemical monitoring system further comprises a third condensate delivery line provided with a condensate sampling control valve 39 and a second quantification ring 47; and wherein the third condensate delivery line is connected in parallel to the second condensate delivery line and is connected to the detection basin 48; and wherein the spectrophotometer 49 is used to measure the light absorption value of the liquid in the detection basin 48; and wherein the spectrophotometer 49 is electrically connected to the dosing flow meter 29 and the iron meter 50;and wherein the spectrophotometer 49 is configured to reduce the flow rate of the metering flowmeter 29 when the iron concentration in the condensate is less than a preset iron concentration value and the hydrogen peroxide concentration in the condensate is greater than a preset hydrogen peroxide concentration value.;

[0061] It should be noted that the flow meter for Dosage 29 has a preset flow rate, and if the iron concentration in the condensate is less than the preset value of the iron concentration and the hydrogen peroxide concentration in the condensate is greater than the preset value of the hydrogen peroxide concentration, the preset flow rate of the flow meter for Dosage 29 is reduced.

[0062] It should be noted that a drain pipe is connected to the detection basin 48.

[0063] It should be noted that the concentration of catalase is between 25 mmol / L and 50 mmol / L, the concentration of the guaiacol / ethanol solution is between 0.1% and 0.2%, and the concentration of the potassium hydrogen phthalate-sodium hydroxide buffer solution is between 0.05 mol / L and 0.2 mol / L. Preferably, the concentration of catalase is 50 mmol / L, the concentration of the guaiacol / ethanol solution is 0.2%, and the concentration of the potassium hydrogen phthalate-sodium hydroxide buffer solution is 0.1 mol / L.

[0064] It should be noted that the light absorption value of the liquid in the detection basin 48 can reflect the magnitude of the hydrogen peroxide concentration; the larger the light absorption value, the higher the hydrogen peroxide concentration. The light absorption value is in the range of 0-1.0, and accordingly, the hydrogen peroxide concentration value is in the range of 0-500 µg / L.

[0065] In the embodiment of the present invention, the spectrophotometer 49 is a UV spectrophotometer.

[0066] The embodiment of the present invention provides a corrosion suppression system in the operation of a condenser, which is capable of monitoring the hydrogen peroxide concentration in the condensate with the arrangement of a detection system; wherein the spectrophotometer 49 is electrically connected to the dosing flow meter 29 to control the dosing flow rate, which prevents the waste of chemicals and ensures the economy of dosing.

[0067] With reference to Fig. 1, the reagent delivery line in the embodiment of the present invention is provided with a second pump body 45 located between the reagent pack liquid control valve 38 and the first quantification ring 46.

[0068] With reference to Fig. 1, the third condensate discharge line in the embodiment of the present invention is provided with a first pump body 44 located between the condensate sampling control valve 39 and the second quantification ring 47.

[0069] In the embodiment of the present invention, the chemical monitoring system further comprises a purification system comprising a third demineralized water delivery line, wherein the third demineralized water delivery line is connected to the third condensate delivery line, and wherein the third demineralized water delivery line is provided with a third demineralized water control valve 37.

[0070] It should be noted that after each measurement of the hydrogen peroxide concentration in the condensate, the cleaning system is used to clean part of the third condensate conveying line and the cleaning basin 11 in order to improve the accuracy of the next sampling and detection of hydrogen peroxide in the condensate.

[0071] With reference to Fig. 1, the chemical monitoring system in the embodiment of the present invention comprises a five-way valve 43 having a first valve inlet a, a second valve inlet b, a third valve inlet c, a first valve outlet d, and a second valve outlet e, wherein the third demineralized water delivery line may connect the first valve inlet a, and wherein the first valve inlet a may be connected to the first valve outlet d; and wherein the third condensate delivery line may connect the third valve inlet c and the first valve outlet d; and wherein the reagent delivery line may be connected to the second valve inlet b and the second valve outlet e, and wherein the second valve inlet b may be connected to the second valve outlet e.

[0072] With reference to Fig. 1, in the embodiment of the present invention, the first pump body 44 and the first quantification ring 46 are located between the five-way valve 43 and the detection basin 48; the second pump body 45 and the second quantification ring 47 are located between the five-way valve 43 and the detection basin 48.

[0073] With reference to Fig. 1, the chemical monitoring system in the embodiment of the present invention comprises a dosing monitoring and control box 40; wherein the five-way valve 43, the detection basin 48, and the spectrophotometer 49 are each arranged on the dosing monitoring and control box 40; and wherein a part of the third demineralized water delivery line, a part of the reagent delivery line, and a part of the third condensate delivery line are arranged on the dosing monitoring and control box 40.and wherein a control device 41 is arranged in the dosing monitoring and control box 40, which is electrically connected to each of the chemical concentration detector 16, the second demineralized water control valve 22, the chemical sample supply system, the chemical control valve 2, the chemical pump 3, the first demineralized water control valve 5, the first demineralized water pump 6, the second demineralized water pump 23, the first backpressure valve 24, the liquid level gauge 14, the return pump 17, the thermometer 18, the liquid outlet control valve, the first dosing control valve 25, the second backpressure valve 27, the second dosing control valve 28, the third backpressure valve 30, the third dosing control valve 31, the iron meter 50, the spectrophotometer 49, and the third demineralized water control valve 37;

[0074] With reference to Fig. 1, the dosing monitoring and control box 40 in the embodiment of the present invention is further provided with a display screen 42 electrically connected to the controller 41; the display screen 42 is used to display the pressure value measured by the first pressure sensor and the second pressure sensor; and / or display the concentration value of the chemicals measured by the chemical concentration detector 16; and / or measure the liquid level in the preparation tank 15 measured by the liquid level gauge 14; and / or display the temperature of the chemicals in the preparation tank 15 measured by the thermometer 18; and / or display the iron concentration in the condensate measured by the iron meter 50; and / or display the light absorption value of the liquid in the detection tank 48 measured by the spectrophotometer 49;and / or to display the hydrogen peroxide concentration in the detection basin 48; and / or to display the flow rate measured by the dosing flow meter 29;

[0075] With reference to Fig. 2, a second aspect of the present invention provides a method for suppressing corrosion in the operation of a capacitor, which is used for the above-described system for suppressing corrosion in the operation of a capacitor, the method comprising the following steps: S200: Preparation, where the preparation comprises the following steps: S210: Injecting demineralized water, wherein the injection of demineralized water comprises the following steps. S211: Controlling the opening of the second demineralized water control valve 22, supplying demineralized water through the second demineralized water supply line into the preparation tank 15; S212: Controlling the liquid level meter 14 to measure the liquid level in the preparation container 15, and, if the liquid level in the preparation container 15 is higher than a first preset liquid level, executing step S220; S220: Injecting the hydrogen peroxide stock solution, wherein the injection of the hydrogen peroxide stock solution comprises the following steps: S221: Controlling the chemical sample feeder 8 to move to the chemical basin 10 to collect the hydrogen peroxide stock solution; S222: Controlling the chemical sample feeder 8 to move to the chemical inlet 13 to feed the hydrogen peroxide stock solution into the preparation container 15; S230: Controlling the measurement of the concentration of chemicals and the liquid level, wherein the control of the measurement of the concentration of chemicals and the liquid level comprises the following steps: S231: Controlling the chemical concentration detector 16 to measure the concentration of the chemicals in the preparation container 15; S232: Determining a magnitude relationship between the concentration of the chemicals in the preparation container 15 and a target value of the concentration of the chemicals and determining a magnitude relationship between the liquid level in the preparation container 15 and a second preset liquid level; S233: Closing the second demineralized water control valve 22 and stopping the withdrawal and supply of the hydrogen peroxide stock solution by the chemical sample feeder 8 when the concentration of the chemicals in the preparation tank 15 reaches the target value of the concentration of the chemicals and the liquid level in the preparation tank 15 reaches the second preset liquid level; S234: Execute step S210 when the concentration of the chemicals in the preparation container 15 reaches a target value of the concentration of the chemicals and the liquid level in the preparation container 15 is lower than the first preset liquid level.

[0076] An embodiment of the present invention provides a method for suppressing corrosion in the operation of a capacitor, which realizes a uniform dosage of hydrogen peroxide solution in the preparation container 15 by designing an automatic chemical preparation system, wherein the target value of the concentration of the chemicals is always maintained.

[0077] In the embodiment of the present invention, the method after step S233 further comprises the following: S300: Dosing, wherein the dosing comprises the following steps: controlling the opening of the first dosing control valve 25, the second backpressure valve 27, and the dosing flow meter 29, wherein the dosing flow meter 29 has a preset flow rate; delivering the hydrogen peroxide chemicals at a target chemical concentration and a preset flow rate through the dosing atomizing nozzle 32 into the exhaust line 33; executing step S400; S400: Controlling the detection and feedback, wherein the control of the detection and feedback comprises the following steps: S410: Measuring the hydrogen peroxide concentration in the condensate, comprising the following steps: S411: Controlling the opening of the third demineralized water control valve 37, flushing of the third condensate conveying line and the detection basin 48; S412: Controlling the opening of the condensate sampling control valve 39, and closing the condensate sampling control valve 39 after the condensate sample has been conveyed through the second quantification ring 47 into the detection basin 48; S413: Controlling the opening of the reagent pack liquid control valve 38, and closing the reagent pack liquid control valve 38 after the mixed solution is conveyed into the detection basin 48 through the first quantification ring 46; S414: Mixing the condensate sample and the mixed solution for a first preset period of time to a uniform state to form a reaction solution, controlling the spectrophotometer 49 to measure the light absorption value of the reaction solution; S415: Determining the hydrogen peroxide concentration in the condensate based on a preset relationship between the light absorption value and the hydrogen peroxide concentration; executing step S411; S420: Controlling the feedback of the iron concentration in the condensate, comprising the following steps: S421: Controlling the iron meter 50 to measure the iron concentration in the condensate water; S422: Determining a magnitude relationship between the iron concentration in the condensate and a preset value of the iron concentration; S423: Increase the preset flow rate of the metering flowmeter 29 if the iron concentration in the condensate is greater than a preset iron concentration value; execute step S424 if the iron concentration in the condensate is less than a preset iron concentration value; S424: Determining a magnitude relationship between the hydrogen peroxide concentration in the condensate and a preset value of the hydrogen peroxide concentration; S425: Reduce the preset flow rate of the flow meter for dosing 29 when the hydrogen peroxide concentration in the condensate is greater than the preset value of the hydrogen peroxide concentration.

[0078] In the embodiment of the present invention, by monitoring the iron content in the condensate, the corrosion state of the condenser piping is monitored, and the dosing flow rate is adjusted based on the iron content, thereby reducing the corrosion rate of the condenser piping, extending the service life of the condenser, and reducing maintenance costs; by measuring the hydrogen peroxide concentration in the condensate, the dosing flow rate is adjusted based on the hydrogen peroxide concentration and iron content, thereby preventing the waste of chemicals and ensuring the economy of dosing.

[0079] In the embodiment of the present invention, the method further comprises step S100, preparing chemicals and rinsing, before step S200, wherein the preparing chemicals and rinsing comprise the following steps: S110: Controlling the opening of the chemical control valve 2, pumping the hydrogen peroxide stock solution through the chemical delivery line into the chemical tank 10; S120: Controlling the opening of the first demineralized water control valve 5, conveying demineralized water through the first demineralized water conveying line into the purification tank 11; S130: Controlling the chemical sample feeder 8 to move to the cleaning basin 11 to collect demineralized water for the first rinsing, then controlling the chemical sample feeder 8 to move to the waste liquid basin 12 to discharge the demineralized water used for rinsing into the waste liquid basin 12; S140: Control the chemical sample feeder 8 to move to the chemical basin 10 to collect the hydrogen peroxide stock solution for rinsing, then control the chemical sample feeder 8 to move to the waste liquid basin 12 to discharge the hydrogen peroxide stock solution used for rinsing into the waste liquid basin 12.

[0080] The embodiment of the present invention provides a method for suppressing corrosion in the operation of a condenser, wherein the chemical sample feeder 8 carries out a cleaning and rinsing of the chemicals before each withdrawal of the chemicals in order to guarantee the concentration of the chemicals conveyed into the preparation container 15 and to prevent the introduction of other contaminants into the preparation container 15.

[0081] In the embodiment of the present invention, step S110 for controlling the opening of the chemical control valve 2 and conveying the hydrogen peroxide stock solution through the chemical conveying line into the chemical basin 10 comprises the following: S111: Controlling the first pressure sensor to measure the pressure value of the chemical tank 10; S112: Determining a magnitude relationship between the pressure value of the chemical tank 10 and a first preset pressure value; maintaining the opening of the chemical control valve 2 when the pressure value of the chemical tank 10 is less than a first preset pressure value; and closing the chemical control valve 2 when the pressure value of the chemical tank 10 is greater than a second preset pressure value; S120: the step of controlling the opening of the first demineralized water control valve 5 and supplying demineralized water through the first demineralized water supply line into the purification tank 11 comprises the following: S121: Controlling the second pressure sensor to measure the pressure value of the cleaning tank 11; S122: Determining a magnitude relationship between the pressure value of the purification tank 11 and a third preset pressure value; maintaining the opening of the first demineralized water control valve 5 when the pressure value of the purification tank 11 is less than a third preset pressure value; and closing the first demineralized water control valve 5 when the pressure value of the purification tank 11 is greater than a fourth preset pressure value.

[0082] In a method for suppressing corrosion in the operation of a condenser provided by the embodiments of the present invention, a first pressure sensor electrically connected to the chemical control valve 2 is arranged to realize the monitoring and automatic replenishment of the hydrogen peroxide stock solution in the chemical tank 10, ensure the smooth withdrawal of the chemicals by the chemical sample feeder 8, and improve the withdrawal efficiency of the chemical sample supply system; and a second pressure sensor electrically connected to the first demineralized water control valve 5 is arranged to realize the monitoring and automatic replenishment of demineralized water in the purification tank 11, create a prerequisite for the purification of the chemical sample feeder 8, and improve the withdrawal efficiency of the chemical sample feeder 8.

[0083] Although the present invention is disclosed as above, the present invention is not limited thereto. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be based on the scope defined by the claims.

Claims

[1] System for suppressing corrosion in the operation of a capacitor, characterized by that it comprises a preparation system, the preparation system comprising: a chemical storage container (1) for holding the hydrogen peroxide stock solution; a demineralized water tank (4) for holding demineralized water; a preparation tank (15), wherein the upper surface of the preparation tank has a chemical inlet (13), and wherein the preparation tank (15) is provided with a chemical concentration detector (16); and wherein a chemical basin (10), a cleaning basin (11), and a waste liquid basin (12) are arranged on the upper surface of the preparation tank (15), and wherein the chemical basin (10) is connected to the chemical storage tank (1) via a chemical feed line; and wherein the cleaning basin (11) is connected to the demineralized water tank (4) via a first demineralized water delivery line; and wherein the preparation container (15) is connected to the demineralized water tank (4) via a second demineralized water delivery line, and wherein a second demineralized water control valve (22) is arranged on the second demineralized water delivery line; a chemical sample supply system comprising a chemical sample feeder (8), wherein the chemical sample feeder (8) can be raised and lowered along a first direction and can move between the chemical basin (10), the cleaning basin (11), the waste liquid basin (12) and the chemical inlet (13); and wherein the chemical concentration detector (16) is electrically connected to the chemical sample supply system and the second demineralized water control valve (22), respectively. [2] A system for suppressing corrosion in the operation of a capacitor according to claim 1, characterized by that the chemical basin (10), the cleaning basin (11), and the waste liquid basin (12) are arranged one after the other along a second direction; wherein the chemical sample supply system comprises a chemical sample supply arm (7) arranged on the preparation container (15), and wherein the chemical sample supply arm (7) is located above the chemical basin (10), the cleaning basin (11), and the waste liquid basin (12) and extends along the second direction; and wherein the chemical sample feeder (8) is slidably connected to the chemical sample feed arm (7) along the first direction and the second direction, respectively; or wherein the chemical sample feeder (8) is fixedly arranged on the chemical sample feed arm (7), and wherein the chemical sample feed arm (7) is slidably connected to the preparation container (15) along the first direction, and wherein the chemical sample feed arm (7) is telescopic along the second direction; and wherein the second direction is parallel to the upper surface of the preparation container (15) and perpendicular to the first direction. [3] A system for suppressing corrosion in the operation of a capacitor according to claim 1 or 2, characterized bythat a chemical control valve (2) is arranged on the chemical delivery line; wherein a first pressure sensor is arranged between the chemical basin (10) and the preparation container (15), which first pressure sensor is electrically connected to the chemical control valve (2), and wherein the first pressure sensor is configured such that the chemical control valve (2) is opened when the pressure value of the chemical basin (10) measured by the first pressure sensor is less than a first preset pressure value, and the chemical control valve (2) is closed when the pressure value of the chemical basin (10) measured by the first pressure sensor is greater than a second preset pressure value; and wherein the first preset pressure value is less than the second preset pressure value; and / or wherein a first control valve for demineralized water (5) is arranged on the first delivery line for demineralized water; and wherein a second pressure sensor is arranged between the cleaning basin (11) and the preparation container (15), which second pressure sensor is electrically connected to the first control valve for demineralized water (5), and wherein the second pressure sensor is configured such that the first control valve for demineralized water (5) is opened when the pressure value of the cleaning basin (11) measured by the second pressure sensor is less than a third preset pressure value, and the first control valve for demineralized water (5) is closed when the pressure value of the cleaning basin (11) measured by the second pressure sensor is greater than a fourth preset pressure value; and wherein the third preset pressure value is less than the fourth preset pressure value; and / or wherein the second demineralized water delivery line is provided with a demineralized water atomizer (19), a second demineralized water pump (23) and a first back-pressure valve (24), and wherein the demineralized water atomizer (19) is located in the preparation container (15), and wherein the first back-pressure valve (24) is arranged on a pipe connected to the outlet end of the second demineralized water pump (23), and wherein the second demineralized water pump (23) and the first back-pressure valve (24) are each electrically connected to the second demineralized water control valve (22); and / or wherein the upper surface of the preparation container (15) is provided with a liquid level gauge (14) used to measure the liquid level in the preparation container (15), and wherein the liquid level gauge (14) is electrically connected to each of the chemical concentration detector (16), the chemical sample supply system and the second demineralized water control valve (22); and / or wherein a return line provided with a return pump (17) is arranged between the chemical outlet end of the chemical concentration detector (16) and the preparation container (15), and wherein the return pump (17) is electrically connected to the chemical concentration detector (16); and / or wherein the preparation container (15) is provided with a liquid outlet line and a thermometer (18), and wherein the liquid outlet line is located at the bottom of the preparation container (15), and wherein the liquid outlet line is provided with a liquid outlet control valve; and wherein the thermometer (18) is used to measure the temperature of the chemicals in the preparation container (15); and wherein the thermometer (18) is electrically connected to the liquid outlet control valve, and wherein the thermometer (18) and the liquid outlet control valve are configured such that, when the temperature of the chemicals in the preparation container (15) measured by the thermometer (18) is higher than a first preset temperature value, the liquid outlet control valve is opened for liquid discharge and the second demineralized water control valve (22) is opened for water refilling and cooling. [4] A system for suppressing corrosion in the operation of a capacitor according to claim 3, characterized by that the system for suppressing corrosion during operation of a condenser further comprises a dosing system comprising a dosing liquid line, one end of the dosing liquid line being connected to the preparation container (15), and an exhaust gas line (33) being connected to the other end; and wherein the dosing liquid line is provided, along the transfer direction of the liquid chemicals, in succession with a first dosing control valve (25), a second backpressure valve (27), a dosing flow meter (29), and a dosing atomizing nozzle (32), and wherein the dosing atomizing nozzle (32) is arranged in the exhaust gas line (33). [5] A system for suppressing corrosion in the operation of a capacitor according to claim 4, characterized byin that the system for suppressing corrosion in the operation of a condenser further comprises a chemical monitoring system comprising a condensate sampling system, and wherein the condensate sampling system comprises a condensate collection tank (34), a first condensate conveying line and a second condensate conveying line, and wherein the first condensate conveying line is connected between the exhaust line (33) and the water inlet end of the condensate collection tank (34); and wherein the second condensate conveying line is connected to the water outlet end of the condensate collection tank (34), and wherein the second condensate conveying line is provided with an iron meter (50) used to measure the iron concentration in the condensate, and wherein the iron meter (50) is electrically connected to the metering flow meter (29). [6] A system for suppressing corrosion in the operation of a capacitor according to claim 5, characterized by that the system for suppressing corrosion in the operation of a capacitor further comprises a detection system comprising a reagent pack liquid container (36), a reagent delivery line, a detection basin (48), and a spectrophotometer (49), wherein the reagent pack liquid container (36) is used to hold a mixed solution of catalase, guaiacol / ethanol solution, and potassium hydrogen phthalate-sodium hydroxide buffer solution; and wherein the reagent delivery line is provided with a reagent pack liquid control valve (38) and a first quantification ring (46); and wherein the reagent delivery line is connected between the reagent pack liquid container (36) and the detection basin (48) to deliver the mixed solution into the detection basin (48); and wherein the chemical monitoring system further comprises a third condensate delivery line provided with a condensate sampling control valve (39) and a second quantification ring (47); and wherein the third condensate delivery line is connected in parallel to the second condensate delivery line and is connected to the detection basin (48); and wherein the spectrophotometer (49) is used to measure the light absorption value of the liquid in the detection basin (48); and wherein the spectrophotometer (49) is electrically connected to the dosing flow meter (29) and the iron meter (50). [7] A system for suppressing corrosion in the operation of a capacitor according to claim 6, characterized byin that the chemical monitoring system further comprises a purification system comprising a third demineralized water delivery line, wherein the third demineralized water delivery line is connected to the third condensate delivery line, and wherein the third demineralized water delivery line is provided with a third demineralized water control valve (37).

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