CN109081410A - A kind of method of the outer cold water of determining high voltage direct current converter valve - Google Patents
A kind of method of the outer cold water of determining high voltage direct current converter valve Download PDFInfo
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- CN109081410A CN109081410A CN201810979846.2A CN201810979846A CN109081410A CN 109081410 A CN109081410 A CN 109081410A CN 201810979846 A CN201810979846 A CN 201810979846A CN 109081410 A CN109081410 A CN 109081410A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
Abstract
The present invention provides a kind of method of outer cold water of determining high voltage direct current converter valve.In this method, temperature control is realized using climatic simulation chamber, be can be realized that prolonged temperature is constant using heater and temperature sensor combination, and then reduce the measurement error of turbidity, is improved accuracy rate.Meanwhile experiment number can be substantially reduced by single factor experiment and orthogonal experiment, save experimental period.In addition, can also be seen that the correlation between each mixing speed and between each mixing time from orthogonal experiment, and then convenient for the comprehensive optimum experimental condition for determining the outer cold water preparation of high voltage direct current converter valve.
Description
Technical field
The present invention relates to technical field more particularly to a kind of methods of the outer cold water of determining high voltage direct current converter valve.
Background technique
Converter valve is the core equipment of DC transmission engineering, for realizing the conversion of alternating current in converter station and direct current.
When converter station runs well, converter valve subjects larger current and high voltage, thus converter valve is also known as high voltage direct current converter
Valve.Since high voltage direct current converter valve subjects larger current and high voltage, thus the temperature at high voltage direct current converter valve is higher,
It needs to cool down high voltage direct current converter valve, to guarantee the normal operation of high voltage direct current converter valve.
Currently, high voltage direct current converter valve is cooled down using water-cooling system, wherein water-cooling system includes valve inner cold water
System and the outer chilled water system two parts of valve.Valve water- cooling generator passes through the heat generated when converter valve for taking away high current, and
The heat is sent to chilled water system outside valve.The outer chilled water system of valve drains into the heat received in atmospheric environment.In addition, outside valve
Chilled water system also indirectly controls the heat dissipation of high voltage direct current converter valve, and therefore, the safe and stable operation of the outer chilled water system of valve is to high pressure
The safe and stable operation of DC converter valve plays a crucial role.
The outer chilled water system of valve is divided into water cooling and air-cooled two ways according to the difference of local environment meteorological condition, wherein water
Cold mode becomes the main type of cooling due to not too many condition limitation.The process of water-cooling pattern cooling are as follows: pass through spray
Water spray on heat exchange coil surface, is taken away heat using the evaporative heat loss and heat exchange of water, keeps the valve in heat exchange coil cold by pump
But water cools off, and the valve inner cold water after cooling is sent again to converter valve, so recycles again and again.Outer cold water is in evaporative heat loss
During can be reduced because of evaporation, thus need the often outer cold water of supplement.Currently, the supplement water of outer cold water is after coagulating treatment
Reservoir water.Reservoir water can add various medicaments during coagulating treatment, so that reservoir water reaches the requirement of outer cold water.So
And since medicament is different, environmental condition is different and the condition of water quality of reservoir water is different, the coagulating treatment of reservoir water is more numb
It is tired, it takes considerable time.
Summary of the invention
The present invention provides a kind of method of outer cold water of determining high voltage direct current converter valve, time-consuming to solve existing determining method
Problem.
The present invention provides a kind of method of outer cold water of determining high voltage direct current converter valve, comprising:
Coagulation experiment device is placed in climatic simulation chamber, the initial temperature of the climatic simulation chamber is set
Degree；Record the initial haze of reservoir water；
Under conditions of the initial temperature, PAM dosage, mixing speed and mixing time are certain, in the water
The PAC of different dosages is separately added into the water of library, the turbidity of the reservoir water of PAC is added in measurement respectively in whipping process；
The turbidity and the initial haze of the reservoir water of the addition PAC obtained according to measurement determine the optimal dosing of PAC
Amount；
Under conditions of the initial temperature, the optimal dosage of the PAC, mixing speed and mixing time are certain,
The PAM of different dosages is separately added into the reservoir water, the reservoir water of PAM is added in measurement respectively in whipping process
Turbidity；
The turbidity and the initial haze of the reservoir water of the addition PAM obtained according to measurement determine the optimal dosing of PAM
Amount；
In the initial temperature, the optimal dosage of the PAC, the optimal dosage of PAM and the certain item of mixing time
Under part, mixing speed is designed into five factors, four horizontal quadrature experiment condition, is set in five factors, the four horizontal quadrature experiment condition
The reservoir water is stirred under the mixing speed of meter respectively, measures the turbidity of the reservoir water respectively in whipping process；
It is true according to the turbidity and the initial haze that measure the obtained reservoir water under the different mixing speed of multiple groups
Fixed optimal mixing speed；
In the initial temperature, the optimal dosage of the PAC, the optimal dosage of the PAM and optimal mixing speed item
Under part, mixing time is designed into five factors, four horizontal quadrature experiment condition, is set in five factors, the four horizontal quadrature experiment condition
The reservoir water is stirred under the mixing time of meter respectively, measures the turbidity of the reservoir water respectively in whipping process；
It is true according to the turbidity and the initial haze that measure the obtained reservoir water under the different mixing time of multiple groups
Fixed optimal mixing time；
The initial temperature, the optimal dosage of the PAC, the optimal dosage of the PAM, the optimal mixing speed with
And the reservoir water is handled under the conditions of the optimal mixing time, obtain the outer cold water of high voltage direct current converter valve.
Preferably, the method also includes: the initial temperature is repeatedly reset, in the initial temperature of reset
Under the conditions of degree, redefine the treatment conditions of the reservoir water respectively, the treatment conditions include the optimal dosage of PAC, PAM most
Excellent dosage, optimal mixing speed and optimal mixing time.
Preferably, the turbidity and the initial haze of the reservoir water of the addition PAC obtained according to measurement determine
The optimal dosage of PAC, comprising:
Calculate the difference of turbidity and the initial haze that the corresponding last time measurement of every kind of PAC dosage obtains；
Choosing the maximum PAC dosage of the difference is the optimal dosage of PAC.
Preferably, the turbidity and the initial haze of the reservoir water of the addition PAM obtained according to measurement determine
The optimal dosage of PAM, comprising:
Calculate the difference of turbidity and the initial haze that the corresponding last time measurement of every kind of PAM dosage obtains；
Choosing the maximum PAM dosage of the difference is the optimal dosage of PAM.
Preferably, the turbidity and the initial haze of the reservoir water obtained according to measurement determine optimal stirring speed
Degree, comprising:
The mixing speed include mixing first gear speed, mixing second speed, flocculation first gear speed, flocculation second speed and
Flocculation third speed；Or including mixing first gear speed, flocculation first gear speed, flocculation second speed, flocculation third speed and flocculation
Fourth speed；
Respectively using each speed stage as abscissa, the turbidity of the reservoir water measured at different time is vertical sits
Mark establishes speed stage-turbidity relational graph；
The optimal velocity of each gear is determined according to the speed stage-turbidity relational graph；
The optimal velocity of each gear determines optimal mixing speed.
Preferably, when the turbidity and the initial haze of the reservoir water obtained according to measurement determine optimal stirring
Between, comprising:
The mixing time include mixing one grade of time, mixing two grades of times, flocculation one grade of time, flocculation two grades of times and
It flocculates the third gear time；Or including one grade of time of mixing, one grade of time of flocculation, two grades of times of flocculation, flocculation third gear time and flocculation
The fourth gear time；
Respectively using each time gear as abscissa, the turbidity of the reservoir water measured at different time is vertical sits
Mark settling time gear-turbidity relational graph；
The optimal time of each gear is determined according to the speed stage-turbidity relational graph；
The optimal time of each gear determines optimal mixing time.
The technical solution that the embodiment of the present invention provides can include the following benefits:
The embodiment of the present invention provides a kind of method of outer cold water of determining high voltage direct current converter valve, comprising: fills coagulation experiment
Storing is placed in climatic simulation chamber, sets the initial temperature of the climatic simulation chamber；Record the primary cloudy of reservoir water
Degree；Under conditions of the initial temperature, PAM dosage, mixing speed and mixing time are certain, in the reservoir water
It is separately added into the PAC of different dosages, the turbidity of the reservoir water of PAC is added in measurement respectively in whipping process；According to survey
The turbidity and the initial haze of the reservoir water of the addition PAC measured determine the optimal dosage of PAC；In the initial temperature
Under conditions of degree, the optimal dosage of the PAC, mixing speed and mixing time are certain, in the reservoir water respectively plus
The PAM for entering different dosages, the turbidity of the reservoir water of PAM is added in measurement respectively in whipping process；It is obtained according to measurement
Addition PAM the reservoir water turbidity and the initial haze determine the optimal dosage of PAM；In the initial temperature, institute
State the optimal dosage of PAC, the optimal dosage of PAM and mixing time it is certain under conditions of, mixing speed is designed into five factors
Four horizontal quadrature experiment conditions, five factors, the four horizontal quadrature experiment condition design mixing speed under respectively stirring described in
Reservoir water measures the turbidity of the reservoir water respectively in whipping process；Under the different mixing speed of multiple groups, according to measuring
To the reservoir water turbidity and the initial haze determine optimal mixing speed；It is optimal in the initial temperature, the PAC
Under the conditions of dosage, the optimal dosage of the PAM and optimal mixing speed, mixing time is designed into five factors, four horizontal quadrature
Experiment condition stirs the reservoir water under the mixing time of five factors, four horizontal quadrature experiment condition design respectively,
The turbidity of the reservoir water is measured in whipping process respectively；Under the different mixing time of multiple groups, according to measuring and obtain
The turbidity of reservoir water and the initial haze determine optimal mixing time；The initial temperature, the optimal dosage of the PAC,
The reservoir water is handled under the conditions of the optimal dosage of the PAM, the optimal mixing speed and the optimal mixing time, is obtained
Cold water outside to high voltage direct current converter valve.Temperature control in the application realized using climatic simulation chamber, using heater and
Temperature sensor combination can be realized that prolonged temperature is constant, and then reduce the measurement error of turbidity, improve accuracy rate.Together
When, experiment number can be substantially reduced by single factor experiment and orthogonal experiment, save experimental period.In addition, from orthogonal reality
The correlation it can also be seen that between each mixing speed and between each mixing time is tested, and then determines high voltage direct current convenient for comprehensive
The optimum experimental condition of the outer cold water preparation of converter valve.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow diagram of the method for the outer cold water of determining high voltage direct current converter valve provided in an embodiment of the present invention；
Fig. 2 is mixing first gear speed-turbidity relational graph provided in an embodiment of the present invention；
Fig. 3 is mixing second speed-turbidity relational graph provided in an embodiment of the present invention；
Fig. 4 is flocculation first gear speed-turbidity relational graph provided in an embodiment of the present invention；
Fig. 5 is flocculation second speed-turbidity relational graph provided in an embodiment of the present invention；
Fig. 6 is flocculation third speed-turbidity relational graph provided in an embodiment of the present invention；
Fig. 7 m- turbidity relational graph when being one grade of mixing provided in an embodiment of the present invention；
Fig. 8 m- turbidity relational graph when being two grades of mixing provided in an embodiment of the present invention；
Fig. 9 m- turbidity relational graph when being one grade of flocculation provided in an embodiment of the present invention；
Figure 10 m- turbidity relational graph when being two grades of flocculation provided in an embodiment of the present invention；
Figure 11 m- turbidity relational graph when being flocculation third gear provided in an embodiment of the present invention.
Specific embodiment
Attached drawing 1 is please referred to, attached drawing 1 shows the side of the outer cold water of determining high voltage direct current converter valve provided by the embodiments of the present application
The flow diagram of method.
By attached drawing 1 it is found that the method for cold water includes: outside determining high voltage direct current converter valve provided by the embodiments of the present application
S01: coagulation experiment device is placed in climatic simulation chamber, sets the initial of the climatic simulation chamber
Temperature；Record the initial haze of reservoir water.
Preparing the coagulation experiment of the outer cold water of high voltage direct current converter valve by raw water (reservoir water), there are two conditions, first, plus
Medicinal strip part；Second, water project situation.Dosing condition is primarily referred to as determining PAC (Chinese: aluminium polychloride；English name:
Polyaluminium Chloride) and PAM (Chinese: polyacrylamide；English name: Polyacrylamide) plus
Dose, to change the turbidity of reservoir water by drug.Water project situation is primarily referred to as mixing speed and mixing time, wherein stirring
Speed includes mixing velocity and flocculation rate.Correspondingly, mixing time includes incorporation time and flocculation time.Currently, stirring speed
Degree shares 5 gears.5 gears include two kinds of situations, and one is one grade of mixing, flocculation fourth gear；Another kind is two grades of mixing, wadding
Solidifying third gear.
Need to meet the requirement of cold water outside high voltage direct current converter valve by the outer cold water that reservoir water is prepared, and turbidity be must
Therefore the basic demand wanted can judge whether reservoir water reaches outside high voltage direct current converter valve by measuring the turbidity of reservoir water
The requirement of cold water.
When determining that cold water is initial outside high voltage direct current converter valve, coagulation experiment device is placed in climatic simulation chamber
In, set the initial temperature of climatic simulation chamber.After reservoir water temperature reaches initial temperature, reservoir water is measured and recorded
Initial haze.In the embodiment of the present application, temperature control is realized using climatic simulation chamber, utilizes heater and temperature sensing
Device combination can be realized that prolonged temperature is constant, and then reduce the measurement error of turbidity, improve accuracy rate.
S02: under conditions of the initial temperature, PAM dosage, mixing speed and mixing time are certain, in institute
The PAC that different dosages are separately added into reservoir water is stated, the turbid of the reservoir water of PAC is added in measurement respectively in whipping process
Degree.
Since reservoir water turbidity is mainly by PAC dosage, PAM dosage, mixing speed and mixing time, it is therefore desirable to
One by one determine PAC dosage, PAM dosage, mixing speed and mixing time optimal conditions, and then determine reservoir water become height
Press the optimal optimal conditions of the outer cold water of DC converter valve.
If changing due to dosage, mixing speed and mixing time can also change, therefore determine that PAC is optimal first
The optimal dosage of dosage, PAM.The no sequencing of determination of the optimal dosage of PAC, the optimal dosage of PAM, in the application reality
It applies in example, first determines the optimal dosage of PAC, then determine the optimal dosage of PAM.
To determine the optimal dosage of PAC, then need to design multiple groups single factor experiment, i.e. PAC dosage changes, PAM dosing
Amount, mixing speed and mixing time are constant.The design quantity that relates to of multiple groups single factor experiment is determined according to actual experiment condition.
In the embodiment of the present application, in initial temperature, PAM dosage, mixing speed and the certain item of mixing time
It under part, chooses that multiple groups volume is identical, the identical reservoir water of water head site, different dosages is separately added into multiple groups reservoir water
PAC, and stirred under the conditions of above-mentioned mixing speed and mixing time.During stirring, the strong point in different stirrings
The turbidity for measuring multiple groups reservoir water respectively, then obtains the turbidity value of different PAC dosage strong points in different stirrings.
S03: the turbidity of the reservoir water of the addition PAC obtained according to measurement determines that PAC is optimal with the initial haze
Dosage.
For different PAC dosages, the turbidity and primary cloudy of the reservoir water that strong point measurement obtains when calculating longest stirring
The difference of degree.The selection maximum PAC dosage of turbidity difference is the optimal dosage of PAC.
In addition, the turbidity variation degree of reservoir water may be different due in identical stirring duration, thus in determination
When the optimal dosage of PAC, it is also necessary to consider the turbidity variation degree of reservoir water, determine the optimal dosage of PAC in order to comprehensive.
S04: in the initial temperature, the optimal dosage of the PAC, mixing speed and the certain condition of mixing time
Under, the PAM of different dosages is separately added into the reservoir water, the water of PAM is added in measurement respectively in whipping process
The turbidity of library water.
To determine the optimal dosage of PAM, then need to design multiple groups single factor experiment, i.e. PAM dosage changes, PAC dosing
Amount, mixing speed and mixing time are constant.The design quantity that relates to of multiple groups single factor experiment is determined according to actual experiment condition.
In the embodiment of the present application, certain in initial temperature, the optimal dosage of PAC, mixing speed and mixing time
Under conditions of, selection identical reservoir water when determining with the optimal dosage of PAC is separately added into different dosings in multiple groups reservoir water
The PAM of amount, and stirred under the conditions of above-mentioned mixing speed and mixing time.During stirring, in different stirrings
Strong point measures the turbidity of multiple groups reservoir water respectively, then obtains the turbidity value of different PAM dosage strong points in different stirrings.
S05: the turbidity of the reservoir water of the addition PAM obtained according to measurement determines that PAM is optimal with the initial haze
Dosage.
For different PAM dosages, the turbidity and primary cloudy of the reservoir water that strong point measurement obtains when calculating longest stirring
The difference of degree.The selection maximum PAM dosage of turbidity difference is the optimal dosage of PAC.
It is identical with the determining optimal dosage of PAC, it is also necessary to the turbidity variation degree of reservoir water to be considered, in order to comprehensive true
Determine the optimal dosage of PAM.
S06: certain in the initial temperature, the optimal dosage of the PAC, the optimal dosage of PAM and mixing time
Under conditions of, mixing speed is designed into five factors, four horizontal quadrature experiment condition, tests item in five factors, four horizontal quadrature
The reservoir water is stirred respectively under the mixing speed of part design, measures the turbidity of the reservoir water respectively in whipping process.
Since mixing speed includes mixing velocity and flocculation rate, and there are two kinds of situations, therefore, can be according to a kind of feelings
Condition is to the optimal mixing speed of determination.Since mixing speed includes five gears, thus mixing speed is directed in the embodiment of the present application
Design five factors, four horizontal quadrature experiment condition.Design the mixing speed of five factors, four horizontal quadrature experiment condition, PAC dosing
Amount, PAM dosage and mixing time are constant.
In the embodiment of the present application, equal in initial temperature, the optimal dosage of PAC, the optimal dosage of PAM and mixing time
Under conditions of certain, selection identical reservoir water when being determined with the optimal dosage of PAC.By multiple groups reservoir water according to setting five because
Mixing speed stirring under plain four horizontal quadrature experiment conditions.During stirring, surveyed respectively at different stirring durations
The turbidity for measuring multiple groups reservoir water, then obtains the turbidity value of different mixing speed orthogonal experiment condition strong points in different stirrings.
Setting mixing speed condition is tested by using five factors, four horizontal quadrature, can be selected from a large amount of experimental point
Suitable representative point out, and then optimal production technology effect is obtained by less experiment number determination.Due to
Orthogonal experiment has the characteristics of balance dispersion, can guarantee the requirement tested comprehensively, to reach preferable experiment purpose.
S07: under the different mixing speed of multiple groups, according to the turbidity and the primary cloudy for measuring the obtained reservoir water
Degree determines optimal mixing speed.
S08: in the initial temperature, the optimal dosage of the PAC, the optimal dosage of PAM and optimal mixing speed item
Under part, the reservoir water is stirred respectively under the different mixing time of multiple groups, measures the reservoir water respectively in whipping process
Turbidity.
S09: under the different mixing time of multiple groups, according to the turbidity and the primary cloudy for measuring the obtained reservoir water
Degree determines optimal mixing time.
S10: in the initial temperature, the optimal dosage of the PAC, the optimal dosage of the PAM, the optimal stirring speed
The reservoir water is handled under the conditions of degree and the optimal mixing time, obtains the outer cold water of high voltage direct current converter valve.
Due to initial temperature, the optimal dosage of PAC, the optimal dosage of PAM, optimal mixing speed and optimal mixing time
Condition it has been determined that therefore under above-mentioned optimal conditions handle reservoir water can obtain it is cold outside satisfactory high voltage direct current converter valve
Water.
Further, the method for the outer cold water of determining high voltage direct current converter valve provided by the embodiments of the present application further include: repeatedly weight
Initial temperature described in new settings redefines the place of the reservoir water under the initial temperature condition of reset respectively
Manage bar part, when the treatment conditions include the optimal dosage of PAC, the optimal dosage of PAM, optimal mixing speed and optimal stirring
Between.
Specifically, as locating for converter station from different places, thus temperature in four seasons variation it is different.PAC dosage and PAM add
Dose is affected by temperature treatment conditions that are larger, thus needing to determine reservoir water at different temperature.The treatment conditions include
The optimal dosage of PAC, the optimal dosage of PAM, optimal mixing speed and optimal mixing time.Such as, temperature in four seasons changes greatly
Place, set multiple temperature, and then determine the treatment conditions of multiple groups reservoir water.Temperature in four seasons changes lesser place, can be with
Less temperature is set, and then determines the treatment conditions of multiple groups reservoir water.
It is following that cold water outside determining high voltage direct current converter valve provided by the embodiments of the present application is described in a manner of specific example
Method, the detailed process of method please refer to attached drawing 1.Particular content is as follows:
S101: coagulation experiment device is placed in climatic simulation chamber, sets the first of the climatic simulation chamber
Beginning temperature；Record the initial haze of reservoir water.
Coagulation experiment device is placed in climatic simulation chamber, sets the initial temperature of climatic simulation chamber as 25
℃.The reservoir water as the outer cold water of high voltage direct current converter valve is acquired, the initial haze and set water temperature for measuring reservoir water are 25
℃.By measurement it is found that the initial haze of reservoir water is 5.56NTC.
S102: under conditions of the initial temperature, PAM dosage, mixing speed and mixing time are certain, in institute
The PAC that different dosages are separately added into reservoir water is stated, the turbid of the reservoir water of PAC is added in measurement respectively in whipping process
Degree.
PAM dosage is set as 4mg/L.Set mixing speed are as follows: one grade of 700rpm of mixing mixes two grades of 400rpm, wads a quilt with cotton
One grade of 200rpm is coagulated, flocculate two grades of 80rpm, and flocculate third gear 40rpm.Set mixing time are as follows: one grade of 20s of mixing mixes two grades
30s, flocculate one grade of 1min, and flocculate two grades of 4min, and flocculate third gear 2min.
Measure volume it is 6 parts of reservoir water identical, be separately added into 6 parts of reservoir waters dosage be 4mg/L, 8mg/L,
The PAC of 16mg/L, 24mg/L, 32mg/L, 40mg/L.According to above-mentioned initial temperature, PAC dosage, PAM dosage, stirring speed
Degree and mixing time stir 6 parts respectively.During stirring, distinguish at 5min, 10min, 15min and 20min respectively
The turbidity of reservoir water is measured, measurement result is as shown in table 1.
Table 1: the turbidity of the reservoir water under different PAC dosages
S103: the turbidity of the reservoir water of the addition PAC obtained according to measurement determines that PAC is optimal with the initial haze
Dosage.
The turbidity numerical value measured according to table 1 calculates what the reservoir waters of different PAC dosages measured under longest mixing time
The difference of turbidity and initial haze, choosing PAC dosage corresponding to the maximum turbidity of difference is optimal dosage.Such as 1 institute of table
Show, when PAC dosage is 24mg/L, the difference of turbidity and initial haze of the reservoir water in stirring at a length of 20min is
5.28, it is maximum difference.When PAC dosage is 16mg/L, turbidity and primary cloudy of the reservoir water in stirring at a length of 20min
The difference of degree is 5.27.Be comprehensively compared in whipping process reservoir water turbidity as it can be seen that when PAC dosage be 16mg/L when, water
The turbidity of library water changes big rise and fall, thus it is not stability that turbidity, which exists,.When PAC dosage is 24mg/L, reservoir water
Turbidity steadily reduces, thus turbidity is more steady.Therefore, choosing 24mg/L is the optimal dosage of PAC.
S104: in the initial temperature, the optimal dosage of the PAC, mixing speed and the certain item of mixing time
Under part, the PAM of different dosages is separately added into the reservoir water, measurement is added described in PAM respectively in whipping process
The turbidity of reservoir water.
Set mixing speed are as follows: one grade of 700rpm of mixing mixes two grades of 400rpm, and flocculate one grade of 200rpm, flocculates two grades
80rpm, flocculate third gear 40rpm.Set mixing time are as follows: one grade of 20s of mixing mixes two grades of 30s, and flocculate one grade of 1min, flocculation
Two grades of 4min, flocculate third gear 2min.
Measure volume it is 6 parts of reservoir water identical, be separately added into 6 parts of reservoir waters dosage be 0.5mg/L, 1mg/L,
The PAM of 2mg/L, 3mg/L, 4mg/L, 8mg/L.Initial temperature is 25 DEG C, the optimal dosage of PAC is 24mg/L, above-mentioned stirring
6 parts of reservoir waters are stirred under speed and mixing time respectively.During stirring, respectively in 5min, 10min, 15min and
The turbidity of reservoir water is measured at 20min respectively, measurement result is as shown in table 2.
Table 2: the turbidity of the reservoir water under different PAM dosages
S105: the turbidity of the reservoir water of the addition PAM obtained according to measurement determines that PAM is optimal with the initial haze
Dosage.
The turbidity numerical value measured according to table 2 calculates what the reservoir waters of different PAM dosages measured under longest mixing time
The difference of turbidity and initial haze, choosing PAM dosage corresponding to the maximum turbidity of difference is optimal dosage.Such as 2 institute of table
Show, when PAM dosage is 2mg/L, the difference of turbidity and initial haze of the reservoir water in stirring at a length of 20min is
5.17.When PAM dosage is 3mg/L, the difference of turbidity and initial haze of the reservoir water in stirring at a length of 20min is
5.34, it is maximum difference.Be comprehensively compared in whipping process reservoir water turbidity as it can be seen that when PAM dosage be 2mg/L when, water
The turbidity of library water steadily reduces, but turbidity variation is little during stirring, i.e. after addition 2mg/L PAM, the turbidity of reservoir water
It can reduce rapidly.When PAM dosage is 3mg/L, the turbidity of reservoir water is steadily reduced, and the turbidity at 5min and 20min
There are larger differences, that is, after 3mg/LPAM being added, the turbidity of reservoir water needs a period of time that can reduce.Therefore, synthesis is examined
Consider turbidity and the haze reduction time of reservoir water, selection 2mg/L is the optimal dosage of PAM.
S106: certain in the initial temperature, the optimal dosage of the PAC, the optimal dosage of PAM and mixing time
Under conditions of, mixing speed is designed into five factors, four horizontal quadrature experiment condition, tests item in five factors, four horizontal quadrature
The reservoir water is stirred respectively under the mixing speed of part design, measures the turbidity of the reservoir water respectively in whipping process.
Mixing speed is designed into five factors, four horizontal quadrature experiment condition, the orthogonal test condition is as shown in table 3.
Mixing speed under 3: five factor of table, four horizontal quadrature experiment condition
Set mixing time are as follows: one grade of 20s of mixing mixes two grades of 30s, and flocculate one grade of 1min, and flocculate two grades of 4min, flocculation
Third gear 2min.Measure volume it is 16 parts of reservoir water identical, be added in 16 parts of reservoir waters dosage be 24mg/L PAC and
The PAM of 2mg/L.Stir 16 parts of reservoir waters respectively under above-mentioned mixing speed and mixing time.During stirring, exist respectively
The turbidity of reservoir water is measured at 5min, 10min, 15min and 20min respectively, measurement result is as shown in table 4.
Table 4: the turbidity of the reservoir water under five factor of mixing speed, four horizontal quadrature experiment condition
S107: under the different mixing speed of multiple groups, the turbidity of the reservoir water that is obtained according to measurement and described initial
Turbidity determines optimal mixing speed.
Since the mixing speed in this example includes one grade of mixing, two grades of mixing, one grade of flocculation, two grades of flocculation and flocculation
Third gear, thus it needs to be determined that each gear optimal mixing speed.Based on this, according to the turbidity of reservoir water that measurement obtains,
Respectively using each speed stage as abscissa, the turbidity for the reservoir water that strong point measurement obtains when different is that ordinate establishes speed threshold
Position-turbidity relational graph obtains mixing first gear speed-turbidity relational graph, mixing second speed-turbidity relationship shown in attached drawing 2-6
Figure, flocculation first gear speed-turbidity relational graph, flocculation second speed-turbidity relational graph and flocculation third speed-turbidity relational graph.
By attached drawing 2 as it can be seen that when mixing first gear speed is 700rpm, no matter how much a length of when stirring, turbidity at this time compared with
Low, therefore, the optimal velocity for mixing first gear speed is 700rpm.Likewise, mixing second speed can be obtained by attached drawing 3-6
Optimal velocity is 400rpm, and the optimal velocity for the first gear speed that flocculates is 250rpm, and the optimal velocity for the second speed that flocculates is
90rpm, the optimal velocity for third speed of flocculating are 40rpm.It therefore deduces that, optimal mixing speed are as follows: one grade of mixing
700rpm mixes two grades of 400rpm, and flocculate one grade of 250rpm, and flocculate two grades of 90rpm, and flocculate third gear 40rpm.
S108: in the initial temperature, the optimal dosage of the PAC, the optimal dosage of PAM and optimal mixing speed item
Under part, mixing time is designed into five factors, four horizontal quadrature experiment condition, is set in five factors, the four horizontal quadrature experiment condition
The reservoir water is stirred under the mixing time of meter respectively, measures the turbidity of the reservoir water respectively in whipping process.
Mixing time is designed into five factors, four horizontal quadrature experiment condition, the orthogonal test condition is as shown in table 5.
Mixing time under 5: five factor of table, four horizontal quadrature experiment condition
Set mixing speed are as follows: mixing first gear speed is 700rpm, and mixing second speed is 400rpm, and flocculate first gear speed
For 250rpm, flocculation second speed is 90rpm, and flocculation third speed is 40rpm.It is 16 parts of reservoir water identical to measure volume,
The PAM of PAC and 2mg/L that dosage is 24mg/L are added in 16 parts of reservoir waters.Under above-mentioned mixing speed and mixing time
16 parts of reservoir waters are stirred respectively.During stirring, reservoir is measured respectively at 5min, 10min, 15min and 20min respectively
The turbidity of water, measurement result are as shown in table 6.
Table 6: the turbidity of the reservoir water under five factor of mixing time, four horizontal quadrature experiment condition
S109: under the different mixing time of multiple groups, the turbidity of the reservoir water that is obtained according to measurement and described initial
Turbidity determines optimal mixing time.
Since the mixing speed in this example includes one grade of mixing, two grades of mixing, one grade of flocculation, two grades of flocculation and flocculation
Third gear, corresponding, mixing time includes one grade of mixing, mixes two grades, one grade of flocculation, flocculate two grades and flocculation third gear, thus
It needs to be determined that the optimal mixing time of each gear.Based on this, according to the turbidity for the reservoir water that measurement obtains, respectively with each
Time gear is abscissa, and the turbidity for the reservoir water that strong point measurement obtains when different is that ordinate settling time gear-turbidity closes
System's figure obtains mixing m- turbidity relational graph, flocculation one when m- turbidity relational graph at one grade, two grades of mixing shown in attached drawing 7-11
M- turbidity relational graph and when flocculation third gear m- turbidity relational graph when m- turbidity relational graph, two grades of flocculation when shelves.
By attached drawing 7 as it can be seen that when mixing one grade of time is 25s, no matter how much a length of when stirring, turbidity at this time is lower,
Therefore, the optimal time for mixing one grade of time is 25s.Likewise, the optimal of two grades of time of mixing can be obtained by attached drawing 8-11
Time is 30s, and the optimal time for one grade of time of flocculating is 2min, and the optimal time for two grades of time of flocculating is 5min, third gear of flocculating
The optimal time of time is 2.5min.It therefore deduces that, optimal mixing time are as follows: one grade of 25s of mixing mixes two grades of 30s, wads a quilt with cotton
One grade of 2min is coagulated, flocculate two grades of 5min, and flocculate third gear 2.5min.
S110: in the initial temperature, the optimal dosage of the PAC, the optimal dosage of the PAM, the optimal stirring
The reservoir water is handled under the conditions of speed and the optimal mixing time, obtains the outer cold water of high voltage direct current converter valve.
It can be learnt by above-mentioned experiment, under the conditions of initial temperature is 25 DEG C, the reservoir for being 5.56NTC by initial haze
Water prepares the optimal treatment condition of the outer cold water of high voltage direct current converter valve are as follows: the optimal dosage of PAC is 24mg/L；The optimal dosing of PAM
Amount is 2mg/L；Optimal mixing speed are as follows: one grade of 700rpm of mixing mixes two grades of 400rpm, and flocculate one grade of 250rpm, flocculation two
Shelves 90rpm, flocculate third gear 40rpm；Optimal mixing time are as follows: one grade of 25s of mixing mixes two grades of 30s, and flocculate one grade of 2min, wadding
Two grades of 5min are coagulated, flocculate third gear 2.5min.Coagulating sedimentation experiment is carried out using reservoir water under the above conditions, when stirring is a length of
Just the water that turbidity is 0.5NTC can be obtained after 5min, which meets the requirement of the outer cold water of high voltage direct current converter valve.
By examples detailed above as can be seen that method provided by the embodiments of the present application passes through single factor experiment and orthogonal experiment
So that 72 groups of experiments of script drop to 44 groups of experiments, this greatly reduces experiment number, saves experimental period.In addition, from orthogonal reality
The correlation it can also be seen that between each mixing speed and between each mixing time is tested, and then determines high voltage direct current convenient for comprehensive
The optimum experimental condition of the outer cold water preparation of converter valve.
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software
The mode of general hardware platform realize.Based on this understanding, the technical solution in the embodiment of the present invention substantially or
Say that the part that contributes to existing technology can be embodied in the form of software products, which can deposit
Storage is in storage medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that computer equipment (can be with
It is personal computer, server or the network equipment etc.) execute certain part institutes of each embodiment of the present invention or embodiment
The method stated.
Invention described above embodiment is not intended to limit the scope of the present invention..
Those skilled in the art will readily occur to of the invention its after considering specification and the disclosure invented here of practice
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (6)
1. a kind of method of the outer cold water of determining high voltage direct current converter valve characterized by comprising
Coagulation experiment device is placed in climatic simulation chamber, the initial temperature of the climatic simulation chamber is set；Note
Record the initial haze of reservoir water；
Under conditions of the initial temperature, PAM dosage, mixing speed and mixing time are certain, in the reservoir water
In be separately added into the PAC of different dosages, the turbidity of the reservoir water of PAC is added in measurement respectively in whipping process；
The turbidity and the initial haze of the reservoir water of the addition PAC obtained according to measurement determine the optimal dosage of PAC；
Under conditions of the initial temperature, the optimal dosage of the PAC, mixing speed and mixing time are certain, in institute
The PAM that different dosages are separately added into reservoir water is stated, the turbid of the reservoir water of PAM is added in measurement respectively in whipping process
Degree；
The turbidity and the initial haze of the reservoir water of the addition PAM obtained according to measurement determine the optimal dosage of PAM；
Under conditions of the initial temperature, the optimal dosage of the PAC, the optimal dosage of PAM and mixing time are certain,
Mixing speed is designed into five factors, four horizontal quadrature experiment condition, in stirring for five factors, four horizontal quadrature experiment condition design
It mixes and stirs the reservoir water under speed respectively, measure the turbidity of the reservoir water respectively in whipping process；
Under the different mixing speed of multiple groups, the turbidity and the initial haze of the reservoir water obtained according to measurement are determined most
Excellent mixing speed；
Under the conditions of the initial temperature, the optimal dosage of the PAC, the optimal dosage of the PAM and optimal mixing speed,
Mixing time is designed into five factors, four horizontal quadrature experiment condition, in stirring for five factors, four horizontal quadrature experiment condition design
It mixes and stirs the reservoir water under the time respectively, measure the turbidity of the reservoir water respectively in whipping process；
Under the different mixing time of multiple groups, the turbidity and the initial haze of the reservoir water obtained according to measurement are determined most
Excellent mixing time；
In the initial temperature, the optimal dosage of the PAC, the optimal dosage of the PAM, the optimal mixing speed and institute
It states and handles the reservoir water under the conditions of optimal mixing time, obtain the outer cold water of high voltage direct current converter valve.
2. the method according to claim 1, wherein the method also includes: repeatedly reset described initial
Temperature redefines the treatment conditions of the reservoir water, the processing under the initial temperature condition of reset respectively
Condition includes the optimal dosage of PAC, the optimal dosage of PAM, optimal mixing speed and optimal mixing time.
3. the method according to claim 1, wherein the reservoir of the addition PAC obtained according to measurement
The turbidity of water and the initial haze determine the optimal dosage of PAC, comprising:
Calculate the difference of turbidity and the initial haze that the corresponding last time measurement of every kind of PAC dosage obtains；
Choosing the maximum PAC dosage of the difference is the optimal dosage of PAC.
4. the method according to claim 1, wherein the reservoir of the addition PAM obtained according to measurement
The turbidity of water and the initial haze determine the optimal dosage of PAM, comprising:
Calculate the difference of turbidity and the initial haze that the corresponding last time measurement of every kind of PAM dosage obtains；
Choosing the maximum PAM dosage of the difference is the optimal dosage of PAM.
5. the method according to claim 1, wherein the turbidity of the reservoir water obtained according to measurement with
The initial haze determines optimal mixing speed, comprising:
The mixing speed includes mixing first gear speed, mixing second speed, flocculation first gear speed, flocculation second speed and flocculation
Third speed；Or including mixing first gear speed, flocculation first gear speed, flocculation second speed, flocculation third speed and flocculation fourth gear
Speed；
Respectively using each speed stage as abscissa, the turbidity of the reservoir water measured at different time is built for ordinate
Vertical speed stage-turbidity relational graph；
The optimal velocity of each gear is determined according to the speed stage-turbidity relational graph；
The optimal velocity of each gear determines optimal mixing speed.
6. the method according to claim 1, wherein the turbidity of the reservoir water obtained according to measurement with
The initial haze determines optimal mixing time, comprising:
The mixing time includes one grade of time of mixing, two grades of times of mixing, one grade of time of flocculation, two grades of times of flocculation and flocculation
The third gear time；Or including one grade of time of mixing, one grade of time of flocculation, two grades of times of flocculation, flocculation third gear time and flocculation fourth gear
Time；
Respectively using each time gear as abscissa, the turbidity of the reservoir water measured at different time is built for ordinate
Vertical time gear-turbidity relational graph；
The optimal time of each gear is determined according to the speed stage-turbidity relational graph；
The optimal time of each gear determines optimal mixing time.
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| CN107381883A (en) * | 2017-09-20 | 2017-11-24 | 中国矿业大学 | A kind of method of lignite absorption pre-treatment coal liquifaction feature waste water |
| CN207418356U (en) * | 2017-10-31 | 2018-05-29 | 云南电网有限责任公司楚雄供电局 | The system that a kind of water purification station automatically controls dosage with raw water turbidity |
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| CN103145227A (en) * | 2013-03-25 | 2013-06-12 | 西安德奇水处理有限公司 | Flocculation treatment method for copper-containing wastewater |
| CN105000640A (en) * | 2015-06-18 | 2015-10-28 | 中环辽宁工程技术股份有限公司 | Experimental method for preparation of poly-iron-based flocculating agent for coking wastewater advanced treatment |
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Application publication date: 20181225 |