CN105044382A - Test board for measuring overall flow velocity of submersible mixer, and method for measuring overall flow velocity of submersible mixer - Google Patents

Test board for measuring overall flow velocity of submersible mixer, and method for measuring overall flow velocity of submersible mixer Download PDF

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CN105044382A
CN105044382A CN201510121620.5A CN201510121620A CN105044382A CN 105044382 A CN105044382 A CN 105044382A CN 201510121620 A CN201510121620 A CN 201510121620A CN 105044382 A CN105044382 A CN 105044382A
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flow velocity
submersible agitator
overall flow
taper
hole probe
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CN105044382B (en
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刘厚林
明加意
董亮
白羽
肖佳伟
谭林伟
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Jiangsu University
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Jiangsu University
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Abstract

The invention belongs to the technical field of fluid and chemical engineering, and relates to a test board for measuring the overall flow velocity of a submersible mixer and a method for measuring the overall flow velocity of a submersible mixer. The test board comprises a submersible mixer and a cone-shaped five-hole probe which are arranged in a sewage treatment pool, wherein the sewage treatment pool is a road-shaped pool; the cone-shaped five-hole probe is connected with an input end of a signal collector through a pressure sensor; and an output end of the signal collector is connected with a computer. The test board for measuring the overall flow velocity of a submersible mixer can measure the overall flow velocity of a submersible mixer by means of the integral principle, wherein the measuring process includes starting measurement from the position which is about 40mm apart from an impeller axis of the submersible mixer (dmin=40mm); moving to two sides point by point by the increment (each d=80) to measure the mean flow velocity in each anchor ring until the measured mean flow velocity is less than the minimum flow velocity Vmin so as to determine the maximum diameter dmax of a circle; and then obtaining the overall flow velocity. The invention provides the method for measuring the overall flow velocity of the submersible mixer, and designs the test board for measuring the overall flow velocity of the submersible mixer for the measuring method, thus being able to provide accurate experimental data for a factory inspection report of the mixer.

Description

A kind of test board and method measuring the overall flow velocity of submersible agitator
Technical field
The present invention relates to fluid, chemical technology field, be specifically related to a kind of test board and the method for measuring the overall flow velocity of submersible agitator.
Background technology
Wastewater treatment is the important measures that current environmental protection department and enterprise solve contaminated wastewater in environmental pollution, and submersible agitator is a kind of novel, efficient Sewage treatment mixer tool, is used widely in industry, city and rural sewage treatment.Sewage submersible agitator is a kind of action of forced stirring equipment, is applicable to the stirring of all kinds of wastewater treatment, can stir, mixes surrounding water, thus improves sewage treating efficiency.
Effective stirring obtains under overall flow condition, and the media bulk in pond is all moving, and becomes a part for stirring technique.Until today, overall flow velocity is still the method for general stirring being carried out to quantitative test the most feasible in wastewater treatment.Effective stirring of submersible agitator obtains under overall flow condition, and its flow velocity is generally 0.15-0.35m/s.Overall flow is driven by the momentum of stirrer jet, and it is exactly fundamentally the reaction thrust of stirrer, and the position of it and stirrer decides produced liquid form jointly.If thrust required in the position of stirrer and a certain application and the thrust data of stirrer known, just can carry out lectotype selection accordingly.And current stirrer is mostly according to the parameter of the size of stirring pool, the depth of water and medium, as: suspension content, viscosity etc. carry out type selecting, fail to provide quantitatively the overall flow velocity of submersible agitator stirring extent, are difficult to meet industrial demand.
In order to solve the problem, be necessary very much to develop a kind of method and the test board of measuring the overall flow velocity of submersible agitator, and its correlation technique, have not been reported both at home and abroad at present.
Summary of the invention
The object of the invention is the overall flow velocity for failing to provide quantitatively submersible agitator stirring extent at present, being difficult to the problem meeting commercial production demand, propose a kind of test board and the method for measuring the overall flow velocity of submersible agitator.
Technical scheme of the present invention is: a kind of test board measuring the overall flow velocity of submersible agitator, is characterized in that, comprising: be placed on the submersible agitator in treatment tank and taper five-hole probe; The interstitial hole of described submersible agitator impeller central axis and described taper five-hole probe is in same level;
The centre position of described treatment tank one wing passage is provided with test board and arranges district T, described test board arranges that district T open top both sides are provided with the two track A be parallel to each other, pedal is provided with between two guide rail A, described pedal can move forward and backward along guide rail A, the centre position, bottom of described test section is vertically fixed with track B, and described track B is vertically fixed with bracket;
Described submersible agitator is placed on described bracket; Described submersible agitator is connected by cable with switch board;
Described taper five-hole probe is fixedly connected with fixed support, and described fixed support slides with guide rail C and links, and described fixed support can move left and right along described guide rail C, described guide rail C and described pedal fixed-link; Described taper five-hole probe is connected by pressure transducer with the input end of signal picker, and the output terminal of described signal picker is connected with computing machine.
In such scheme, described treatment tank is road shape pond.
In such scheme, described taper five-hole probe has two at least.
In such scheme, described fixed support comprises the groove be connected with described guide rail C, is fixed with montant, described montant is fixed with support arm above described groove, the end of described support arm is provided with fixture, and described taper five-hole probe is fastened by bolts on described fixture.
In such scheme, the two ends of described guide rail C are by cross bar and described pedal fixed-link.
Measure a method for the overall flow velocity of submersible agitator, comprise the following steps:
S1, described submersible agitator is installed:
Mention described submersible agitator with hoist cable, along described guide rail B, described submersible agitator is placed on described bracket;
S2, regulate the described position of taper five-hole probe on described fixed support:
Make the impeller central axis of the interstitial hole of described taper five-hole probe and described submersible agitator in same level, after centering, described taper five-hole probe is fixed;
S3, regulate the measuring position of described taper five-hole probe:
Describedly move left and right described fixed support along described pedal, make the described taper five-hole probe on two described fixed supports be in the position of I and symmetry respectively, position has adjusted rear fixing described fixed support;
S4, regulate described taper five-hole probe and described submersible agitator distance;
Move described pedal along described guide rail A, make the distance of the top of described taper five-hole probe and described submersible agitator impeller place plane be the n of impeller diameter doubly, fixing described pedal;
S5, complete the connection of test board:
Described cable is accessed described switch board;
Described taper five-hole probe is connected with described pressure transducer, described signal picker and described computing machine successively;
S6, startup submersible agitator:
Control described submersible agitator by described switch board at least to operate under rated voltage, rated frequency 20min, flow field is stablized;
S7, reading measurement data:
The mean flow rate of reading displayed symmetrical measurement point on described computing machine, from minimum diameter d minplace starts to measure, and makes described fixed support drive described taper five-hole probe to move along described guide rail C pointwise to two ends, until measured mean flow rate drops to lower than V with the diameter increment of every d mintime till, then determine circle maximum diameter d max;
Step8) integral principle is utilized to measure the overall flow velocity of described submersible agitator:
Q = Q min + Q I - II + · · · + Q ( N - 1 ) - N = V I ‾ πd min 2 4 + V II ‾ π ( d II 2 - d I 2 ) 4 + · · · + V N ‾ π ( d N 2 - d N - 1 2 ) 4
V av = 4 Q πd max 2 .
In formula, Q minfor inner circle flow, Q i-IIbe the annulus flow of I-II, Q (N-1)-Nfor the annulus flow of (N-1)-N, be the mean value of I two ends flow velocity, be the mean value of II two ends flow velocity, for the mean value of N two ends flow velocity, d minfor the minimum diameter of circle, d ibe I place diameter of a circle, d nfor N place diameter of a circle, π is constant, V avfor overall flow velocity, d maxfor the maximum gauge of circle.
In such scheme, also comprising minimum flow velocity is V mindetermining step: to described submersible agitator UG three-dimensional modeling, put into the pipe of 1.12 times of impeller diameters, extract water body, the large-scale grid software grid division of ICEM, utilizes CFD software to carry out numerical simulation to water body, works as Q m=(1 ~ 1.05) Q ttime, wherein Q mfor simulating the flow of gained, Q tfor testing the flow recorded, minimum flow velocity is V min=0.105 ~ 0.114m/s.
Further, described V min=0.11m/s.
In such scheme, the n=3 in described S4, the top of described taper five-hole probe and the distance of described submersible agitator impeller place plane are 3 times of impeller diameter, i.e. L=3 × Φ d.
In such scheme, described d min=40mm, described d=80mm.
The invention has the beneficial effects as follows:
1, test and carry out in described road shape pond, the liquid stream main flow produced when described submersible agitator is operated can flow toward the direction, avoids liquid dispersion, thus ensures that flow field is stablized, and improves measuring accuracy;
2, the interstitial hole of described submersible agitator impeller central axis and described taper five-hole probe is in same level, makes measurement accurate measurement more;
3, described minimum flow rate of water flow is defined as V min=0.11m/s can meet the flow rate test demand of the submersible agitator of the different model chosen simultaneously, and applicability is wider;
4, the top of described taper five-hole probe and the distance of described submersible agitator impeller place plane are 3 times of impeller diameter, i.e. L=3 × Φ d, and flow field is herein more stable, are conducive to improving measuring accuracy;
5, described d min=40mm, described d=80mm more can meet the requirement of precision, and save the time of measuring;
6, the present invention utilizes the overall flow velocity of integral principle determination stirrer, gives the measuring method of the overall flow velocity of stirrer, and devises a kind of test board measuring the overall flow velocity of submersible agitator for this reason, for stirrer report of dispatching from the factory provides experimental data accurately.
Accompanying drawing explanation
Fig. 1 is the partial three dimensional perspective diagram of test board of the present invention;
Fig. 2 is the outside drawing in road shape pond;
Fig. 3 is the front view of test board of the present invention;
Fig. 4 is the enlarged drawing at M place in Fig. 3;
Fig. 5 is the vertical view of test board of the present invention;
The schematic diagram of Fig. 6 calculated flow rate of the present invention.
In figure: 1, guide rail A; 2, fixed support; 201, groove; 202, montant; 203, support arm; 204, fixture; 3, pressure transducer; 4, guide rail B; 5, cable; 6, hoist cable; 7, submersible agitator; 8, taper five-hole probe; 9, bracket; 10, pedal; 11, guide rail C; 1101, cross bar; 12, signal picker; 13, computing machine; 14, switch board; 15, treatment tank; District T arranged by 16 test boards.
Embodiment
In describing the invention, it will be appreciated that, term " on ", D score, "front", "rear", "left", "right", " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail, but protection scope of the present invention is not limited to this.
As shown in Figure 1, a kind of test board measuring the overall flow velocity of submersible agitator, comprising: be placed on the submersible agitator 7 in treatment tank 15 and taper five-hole probe 8.
As shown in Figure 2, described treatment tank 15 is road shape pond (but being not limited to this), and the liquid stream produced when its effect mainly makes submersible agitator operate can flow along direction shown in arrow in figure, avoids liquid dispersion, thus ensure that flow field is stablized, improve measuring accuracy.
As shown in Figure 3, the interstitial hole of described submersible agitator 7 impeller central axis and described taper five-hole probe 8 is in same level.
The centre position of described treatment tank 15 1 wing passage is provided with test board and arranges district T16, described test board arranges that district T16 open top both sides are provided with the two track A1 be parallel to each other, pedal 10 is provided with between two guide rail A1, described pedal 10 can move forward and backward along guide rail A1, the centre position, bottom of described test section 15 is vertically fixed with track B4, described track B4 is vertically fixedly welded with bracket 9, and described bracket 9 is apart from h=3m at the bottom of the pond of described treatment tank 15; Described submersible agitator 7 is placed on described bracket 9; Described submersible agitator 7 is connected by cable 5 with switch board 14.
As shown in Figure 4, described fixed support 2 comprises the groove 201 be connected with described guide rail C11, described groove 201 is fixed with montant 202 above, described montant 202 is fixed with support arm 203, the end of described support arm 203 is provided with fixture 204, and described taper five-hole probe 8 is fastened by bolts on described fixture 204.
The two ends of described guide rail C11 are by cross bar 1101 and described pedal 10 fixed-link, and described fixed support 2 can move left and right along described guide rail C11, also can move forward and backward with described pedal 10 after fixing.
Described taper five-hole probe 8 has two at least, taper five-hole probe 8 described in every root connects a pressure transducer 3 all separately, described taper five-hole probe 8 is connected by described pressure transducer 3 with the input end of signal picker 12, and the output terminal of described signal picker 12 is connected with computing machine 13.
Measure a method for the overall flow velocity of submersible agitator, comprise following test preparatory stage and experimental stage:
The test preparatory stage comprises the following steps:
S1, described submersible agitator 7 is installed:
Mention described submersible agitator 7 with hoist cable 6, along described guide rail B4, described submersible agitator 7 is placed on described bracket 9;
S2, regulate the position of described taper five-hole probe 8 on described fixed support 2:
Make the impeller central axis of the interstitial hole of described taper five-hole probe 8 and described submersible agitator 7 in same level, after centering, described taper five-hole probe 8 is fixed;
S3, regulate the measuring position of described taper five-hole probe 8:
Describedly move left and right described fixed support 2 along described pedal 10, make the described taper five-hole probe 8 on two described fixed supports 2 be in the position of I and symmetry respectively, position has adjusted rear fixing described fixed support 2;
S4, regulate described taper five-hole probe 8 and described submersible agitator 7 distance;
Move described pedal 10 along described guide rail A1, make the distance of the top of described taper five-hole probe 8 and described submersible agitator 7 impeller place plane be 3 times of impeller diameter, i.e. L=3 × Φ d, fixing described pedal 10;
S5, complete the connection of test board:
Described cable 5 is accessed described switch board 14;
Described taper five-hole probe 8 is connected with described pressure transducer 3, described signal picker 12 and described computing machine 13 successively.
Experimental stage comprises the following steps:
S6, startup submersible agitator 7:
Control described submersible agitator 7 by described switch board 14 at least to operate under rated voltage, rated frequency 20min, flow field is stablized;
S7, reading measurement data:
The mean flow rate of reading displayed symmetrical measurement point on described computing machine 13, from minimum diameter d minplace starts to measure, and makes described fixed support 2 drive described taper five-hole probe 8 to move along described guide rail C11 pointwise to two ends, until measured mean flow rate drops to lower than minimum flow velocity V with the diameter increment of every d mintill during=0.11m/s, then determine the maximum diameter d of circle max;
Minimum flow velocity is V mindefining method: with the submersible agitator of impeller outer diameter 790mm for sample, UG three-dimensional modeling is carried out to it, puts into the pipe of 1.12 times of impeller diameters, extract water body, the large-scale grid software grid division of ICEM, utilizes CFD software to carry out numerical simulation to water body, works as Q m=(1 ~ 1.05) Q ttime, wherein Q mfor simulating the flow of gained, Q tfor testing the flow recorded, minimum flow velocity is V min=0.105 ~ 0.114m/s.The submersible agitator choosing different model carries out aforesaid operations, and contrasted by gained lowest speed, we find V min=0.11m/s can meet the flow rate test demand of the submersible agitator of the different model chosen simultaneously.
Minimum flow velocity is V mindetermination principle: with regard to a certain model submersible agitator, put it in the water pipe of corresponding diameter and carry out numerical simulation, the actual flow Q of this model stirrer can be obtained m, but in open type test tank, advance current to be that flame-shaped moves forward, flow velocity reduces from inside to outside gradually, during experiment, chooses different minimum flow rate of water flow V minjust can obtain different maximum gauges, different test flow Q can be obtained accordingly t, make equation Q m=(1 ~ 1.05) Q tthe minimum flow velocity met the demands may have a lot of groups, the minimum flow velocity V met the demands of each setting minonly can adapt to the submersible agitator of several different model, but V min=0.11m/s can meet the flow rate test demand of the submersible agitator of the different model chosen simultaneously, and applicability is wider.
S8, integral principle is utilized to measure the overall flow velocity of described submersible agitator 7:
During submersible agitator running, the liquid pushed is that flame-shaped is pushed ahead, taper five-hole probe 8 be arranged symmetrically with can record same diameter on section round edge circle on the speed of 2, the mean flow rate of any annulus should be the mean value of two the flow velocity readings in left and right in this annular radii, during experiment, from distance impeller axis d minabout=40mm place starts to measure, and moves, measures the mean flow rate in each anchor ring, until measured mean flow rate is lower than V with the increment of every d=80mm along pedal 10 pointwise to both sides mintill during=0.11m/s, then determine the maximum diameter d of circle max.
As shown in Figure 6, in figure, the flow of dash area is
Q II - III = V III ‾ π ( d III 2 - d II 2 ) 4 - - - ( 1 )
In formula, for the mean value of measuring point III two ends flow stream velocity;
Then the overall flow of described submersible agitator 7 is flow sum on each anchor ring, namely
Q = Q min + Q I - II + · · · + Q ( N - 1 ) - N = V I ‾ πd min 2 4 + V II ‾ π ( d II 2 - d I 2 ) 4 + · · · + V N ‾ π ( d N 2 - d N - 1 2 ) 4 - - - ( 2 )
Corresponding overall flow velocity is:
V av = 4 Q πd max 2 - - - ( 3 )
In formula, Q minfor inner circle flow, Q i-IIbe the annulus flow of I-II, Q (N-1)-Nfor the annulus flow of (N-1)-N, be the mean value of I two ends flow velocity, be the mean value of II two ends flow velocity, for the mean value of N two ends flow velocity, d minfor the minimum diameter of circle, d ibe I place diameter of a circle, d nfor N place diameter of a circle, π is constant, V avfor overall flow velocity, d maxfor the maximum gauge of circle.
Advantage of the present invention is: test and carry out in described road shape pond, and the liquid stream main flow produced when described submersible agitator is operated can flow toward the direction, avoids liquid dispersion, thus ensures that flow field is stablized, and improves measuring accuracy; The interstitial hole of described submersible agitator impeller central axis and described taper five-hole probe, in same level, makes measurement accurate measurement more; Described minimum flow rate of water flow is defined as V min=0.11m/s can meet the flow rate test demand of the submersible agitator of the different model chosen simultaneously, and applicability is wider; The top of described taper five-hole probe and the distance of described submersible agitator impeller place plane are 3 times of impeller diameter, i.e. L=3 × Φ d, and flow field is herein more stable, are conducive to improving measuring accuracy; Described d min=40mm, described d=80mm more can meet the requirement of precision, and save the time of measuring; The present invention utilizes the overall flow velocity of integral principle determination stirrer, gives the measuring method of the overall flow velocity of stirrer, and devises a kind of test board measuring the overall flow velocity of submersible agitator for this reason, for stirrer report of dispatching from the factory provides experimental data accurately.
Described embodiment is preferred embodiment of the present invention; but the present invention is not limited to above-mentioned embodiment; when not deviating from flesh and blood of the present invention, any apparent improvement that those skilled in the art can make, replacement or modification all belong to protection scope of the present invention.

Claims (10)

1. measure a test board for the overall flow velocity of submersible agitator, it is characterized in that, comprising: be placed on the submersible agitator (7) in treatment tank (15) and taper five-hole probe (8); The interstitial hole of described submersible agitator (7) impeller central axis and described taper five-hole probe (8) is in same level;
The centre position of described treatment tank (15) wing passage is provided with test board and arranges district T (16), described test board arranges that district T (16) open top both sides are provided with the two track A (1) be parallel to each other, pedal (10) is provided with between two guide rail A (1), described pedal (10) can move forward and backward along guide rail A (1), the centre position, bottom of described test section (15) is vertically fixed with track B (4), and described track B (4) is vertically fixed with bracket (9);
Described submersible agitator (7) is placed on described bracket (9); Described submersible agitator (7) is connected by cable (5) with switch board (14);
Described taper five-hole probe (8) is fixedly connected with fixed support (2), described fixed support (2) slides with guide rail C (11) and links, described fixed support (2) can move left and right along described guide rail C (11), described guide rail C (11) and described pedal (10) fixed-link; Described taper five-hole probe (8) is connected by pressure transducer (3) with the input end of signal picker (12), and the output terminal of described signal picker (12) is connected with computing machine (13).
2. a kind of test board measuring the overall flow velocity of submersible agitator according to claim 1, it is characterized in that, described treatment tank (15) is road shape pond.
3. a kind of test board measuring the overall flow velocity of submersible agitator according to claim 1, it is characterized in that, described taper five-hole probe (8) has two at least.
4. a kind of test board measuring the overall flow velocity of submersible agitator according to claim 1, it is characterized in that, described fixed support (2) comprises the groove (201) be connected with described guide rail C (11), described groove (201) is fixed with montant (202) above, described montant (202) is fixed with support arm (203), the end of described support arm (203) is provided with fixture (204), and described taper five-hole probe (8) is fastened by bolts on described fixture (204).
5. a kind of test board measuring the overall flow velocity of submersible agitator according to claim 1, it is characterized in that, the two ends of described guide rail C (11) are by cross bar (1101) and described pedal (10) fixed-link.
6. measure a method for the overall flow velocity of submersible agitator, it is characterized in that, comprise the following steps:
S1, described submersible agitator (7) is installed:
Mention described submersible agitator (7) with hoist cable (6), along described guide rail B (4), described submersible agitator (7) is placed on described bracket (9);
S2, regulate the described position of taper five-hole probe (8) on described fixed support (2):
Make the impeller central axis of the interstitial hole of described taper five-hole probe (8) and described submersible agitator (7) in same level, after centering, described taper five-hole probe (8) is fixed;
S3, regulate the measuring position of described taper five-hole probe (8):
Describedly move left and right described fixed support (2) along described pedal (10), make the described taper five-hole probe (8) on two described fixed supports (2) be in the position of I and symmetry respectively, position has adjusted rear fixing described fixed support (2);
S4, regulate described taper five-hole probe (8) and described submersible agitator (7) distance;
Along the mobile described pedal (10) of described guide rail A (1), make the distance of the top of described taper five-hole probe (8) and described submersible agitator (7) impeller place plane be the n of impeller diameter doubly, fixing described pedal (10);
S5, complete the connection of test board:
Described cable (5) is accessed described switch board (14);
Described taper five-hole probe (8) is connected with described pressure transducer (3), described signal picker (12) and described computing machine (13) successively;
S6, startup submersible agitator (7):
Control described submersible agitator (7) by described switch board (14) at least to operate under rated voltage, rated frequency 20min, flow field is stablized;
S7, reading measurement data:
The mean flow rate of reading displayed symmetrical measurement point on described computing machine (13), from minimum diameter d minplace starts to measure, and makes described fixed support (2) drive described taper five-hole probe (8) to move to two ends, until measured mean flow rate drops to lower than V along the pointwise of described guide rail C (11) with the diameter increment of every d mintime till, then determine circle maximum diameter d max;
S8, integral principle is utilized to measure the overall flow velocity of described submersible agitator (7):
Q = Q min + Q I - II + . . . + Q ( N - 1 ) - N = V I ‾ πd min 2 4 + V II ‾ π ( d II 2 - d I 2 ) 4 + . . . + V N ‾ π ( d N 2 - d N - 1 2 ) 4
V av = 4 Q π d max 2
In formula, Q minfor inner circle flow, Q i-IIbe the annulus flow of I-II, Q (N-1)-Nfor the annulus flow of (N-1)-N, be the mean value of I two ends flow velocity, be the mean value of II two ends flow velocity, for the mean value of N two ends flow velocity, d minfor the minimum diameter of circle, d ibe I place diameter of a circle, d nfor N place diameter of a circle, π is constant, V avfor overall flow velocity, d maxfor the maximum gauge of circle.
7. a kind of method measuring the overall flow velocity of submersible agitator according to claim 6, it is characterized in that, also comprising minimum flow velocity is V mindetermining step: to described submersible agitator (7) UG three-dimensional modeling, put into the pipe of 1.12 times of impeller diameters, extract water body, the large-scale grid software grid division of ICEM, utilizes CFD software to carry out numerical simulation to water body, works as Q m=(1 ~ 1.05) Q ttime, wherein Q mfor simulating the flow of gained, Q tfor testing the flow recorded, minimum flow velocity is V min=0.105 ~ 0.114m/s.
8. a kind of method measuring the overall flow velocity of submersible agitator according to claim 7, is characterized in that, described minimum flow velocity V min=0.11m/s.
9. a kind of method measuring the overall flow velocity of submersible agitator according to claim 6, it is characterized in that, n=3 in described S4, the top of described taper five-hole probe (8) and the distance of described submersible agitator (7) impeller place plane are 3 times of impeller diameter, i.e. L=3 × Φ d.
10. a kind of method measuring the overall flow velocity of submersible agitator according to claim 6, is characterized in that, described d min=40mm, described d=80mm.
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CN105865817A (en) * 2016-05-03 2016-08-17 扬州大学 Submersible mixer experimental device
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CN113754045A (en) * 2021-09-13 2021-12-07 南京合高节能环保科技服务有限公司 Accurate control device and control method for flow field of biological tank
CN117213548A (en) * 2023-11-09 2023-12-12 达斯玛环境科技(北京)有限公司 Stirring effect evaluation method, system, equipment and storage medium
CN117213548B (en) * 2023-11-09 2024-01-19 达斯玛环境科技(北京)有限公司 Stirring effect evaluation method, system, equipment and storage medium

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