CN207675345U - A kind of efficiency measurement device for Double-curved-surface stirring machine - Google Patents
A kind of efficiency measurement device for Double-curved-surface stirring machine Download PDFInfo
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- CN207675345U CN207675345U CN201721812428.1U CN201721812428U CN207675345U CN 207675345 U CN207675345 U CN 207675345U CN 201721812428 U CN201721812428 U CN 201721812428U CN 207675345 U CN207675345 U CN 207675345U
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Abstract
The utility model embodiment discloses a kind of efficiency measurement device for Double-curved-surface stirring machine, and the measurement device includes variable-frequency motor, speed reducer, rack, transmission shaft, stabiliser bar, guide shell, tachymeter, test pools, impeller pattern, connecting rod, torque sensor and turbulence plate.Variable-frequency motor, speed reducer and rack are located at the top of test pools, the power output shaft of variable-frequency motor and the input axis connection of speed reducer, the power output shaft of speed reducer is connect with transmission shaft by rack transition, and torque sensor is assembled between the power output shaft and transmission shaft of speed reducer；Rack is fixedly connected in test pools, and transmission shaft is located in test pools；Guide shell is fixed on the center of the test pools by stabiliser bar；Transmission shaft is located in water conservancy diversion tube inner chamber, and transmission shaft is coaxial with guide shell, and both ends of the drive shaft is pierced by guide shell；Tachymeter is fixedly connected in connecting rod, and connecting rod is connected between test pools and guide shell, and tachymeter is located on the same section of test pools.This may be implemented to measure the efficiency of Double-curved-surface stirring machine, and test device is simple, test method is reliable.
Description
Technical field
The utility model belongs to environment protection equipment technical field, it particularly relates to which a kind of being used for Double-curved-surface stirring machine
Efficiency measurement device.
Background technology
Double-curved-surface stirring machine is suitable for the mixing of the industries mixed liquors such as municipal works, and quota is motor 24 hours even
Continuous running character, energy consumption are larger.Efficiency is the core index of Double-curved-surface stirring machine, usually examines efficiency with specific power.It is i.e. real
When existing fluid does not precipitate, the power that per cubic meter of water is consumed, unit is watt every cubic metre (W/m3), Double-curved-surface stirring machine
Up to the present there are no effective measurement methods for specific power measurement.
Invention content
The utility model provides a kind of efficiency measurement device for Double-curved-surface stirring machine, may be implemented to Double-curved-surface stirring
The efficiency of machine measures, and test device is simple, reliable.
In order to solve the above technical problems, the utility model embodiment uses following technical scheme：
A kind of efficiency measurement device for Double-curved-surface stirring machine, the measurement device include variable-frequency motor, speed reducer, machine
Frame, transmission shaft, stabiliser bar, guide shell, tachymeter, test pools, connecting rod, torque sensor and turbulence plate；Variable-frequency motor subtracts
Fast machine, rack and torque sensor are located at the top of test pools, the power output shaft of variable-frequency motor and the input shaft of speed reducer
Connection, the power output shaft of speed reducer connect with transmission shaft by rack transition, the power output shaft and transmission shaft of speed reducer it
Between assemble torque sensor；Rack is fixedly connected in test pools, and transmission shaft is located in test pools；Guide shell passes through stabilization
Bar is fixed on the center of the test pools；Transmission shaft is located in water conservancy diversion tube inner chamber, and transmission shaft and guide shell are coaxial, transmission shaft
Both ends are pierced by guide shell；Tachymeter is fixedly connected in connecting rod, and connecting rod is connected between test pools and guide shell, and is surveyed
Fast instrument is located on the same section of test pools；Turbulence plate is fixedly connected on the wall surface of test pools.
As preference, the efficiency measurement device for Double-curved-surface stirring machine, further includes impeller pattern, the leaf
Wheel model is connected to the lower end of transmission shaft.
As preference, the mounting height of the tachymeter is between the depth of water 1/3~2/3 in test pools.
As preference, the connecting rod is four, and the angle of adjacent two connecting rods is 90 degree in four connecting rods, often
N tachymeter is distributed in root connecting rod；N is integer.
As preference, the turbulence plate is four, and four turbulence plates are circumferentially uniformly distributed along test pools.
As preference, the test pools is round, 8~12 times of a diameter of impeller pattern diameter of test pools,
The depth of water is 8~12 times of impeller pattern diameter in test pools.
As preference, the distance h1 that guide shell bottom is arrived at the top of the impeller pattern is 300mm~600mm, impeller mould
The distance h2 of type bottom to test pools bottom of pond is 1.2 times of impeller pattern diameters, at the top of guide shell to the water surface in test pools away from
It is 800mm~1200mm from h3.
Compared with prior art, the utility model embodiment can realize the efficiency measurement to Double-curved-surface stirring machine, test dress
It sets simple, reliable.Model impeller and power plant of the utility model embodiment as a result of diminution so that test pools are big
Big to reduce, cost-effective reduction is not necessarily required to use concrete basin, can use steel plate rolled forming, convenient, at low cost.The dress
Not too many test parts are set, it is simple in structure；According to the flow behavior of water and the equal progress of the mean flow rate in each section
Measurement of rate of flow takes a little, and test method is reliable.
Description of the drawings
Fig. 1 is Double-curved-surface stirring machine structural schematic diagram；
Fig. 2 is the structural schematic diagram of the efficiency measurement device of the utility model embodiment；
Fig. 3 is the efficiency measurement device vertical view of the utility model embodiment.
Have in figure：Variable-frequency motor 1, speed reducer 2, rack 3, transmission shaft 4, stabiliser bar 5, guide shell 6, tachymeter 7, test water
Pond 8, impeller pattern 9, connecting rod 10, torque sensor 11, turbulence plate 12.
Specific implementation mode
The following description is substantially only exemplary and is not intended to the limitation disclosure, application or purposes.It should
Understand, in whole attached drawings, corresponding reference numeral indicates identical or corresponding component and feature.
It is Double-curved-surface stirring machine structural schematic diagram as shown in Figure 1.Double-curved-surface stirring owner will include motor, speed reducer, machine
Frame, transmission shaft and impeller.The power output shaft of motor and the input axis connection of speed reducer, the power output shaft of speed reducer and transmission
Axis is connected by rack transition, and impeller is assemblied in the lower end of transmission shaft.
As shown in Fig. 2, a kind of efficiency measurement device for Double-curved-surface stirring machine of the utility model embodiment, including frequency conversion
Motor 1, speed reducer 2, rack 3, transmission shaft 4, stabiliser bar 5, guide shell 6, tachymeter 7, test pools 8, connecting rod 10, torque pass
Sensor 11 and turbulence plate 12.Variable-frequency motor 1, speed reducer 2, rack 3 and torque sensor 11 are located at the top of test pools 8, become
The power output shaft of frequency motor 1 and the input axis connection of speed reducer 2, power output shaft and the transmission shaft 4 of speed reducer 2 pass through rack
3 transition connect, and torque sensor 11 is assembled between the power output shaft and transmission shaft 4 of speed reducer 2.Rack 3 is fixedly connected on survey
It tries on pond 8, transmission shaft 4 is located in test pools 8；Guide shell 6 is fixed on the center of the test pools 8 by stabiliser bar 5；
Transmission shaft 4 is located in 6 inner cavity of guide shell, and transmission shaft 4 and guide shell 6 are coaxial, and 4 both ends of transmission shaft are pierced by guide shell 6；Tachymeter
7 are fixedly connected in connecting rod 10, and connecting rod 10 is connected between test pools 8 and guide shell 6, and tachymeter 7 is located at test
On the same section in pond 8.Turbulence plate 12 is fixedly connected on the wall surface of test pools 8.
Using above structure efficiency measurement device when, transmission shaft 4 lower end install impeller pattern 9.By measuring leaf
The efficiency for taking turns model 9, switchs to the efficiency of practical Double-curved-surface stirring machine.
In above-described embodiment, preferably, stabiliser bar 5 is distributed in the upper and lower part of guide shell.Eight can be arranged surely
Fixed pole.Wherein, four stabiliser bars are distributed in top, remaining four stabiliser bar is distributed in lower part.The stabiliser bar 5 of upper and lower part is equal
Even distribution.As preference, turbulence plate 12 is circumferentially uniformly arranged along test pools 8.Turbulence plate 12 may be configured as four, and four disorderly
Flowing plate 12 is circumferentially uniformly distributed along test pools 8.The effect of turbulence plate 12 is that slipstream is transformed into radial flow and axial stream, is made
Pool inner water stream is sufficiently mixed stirring up and down.
When work, water is filled in test pools 8.Water covers impeller pattern 9, tachymeter 7 and guide shell 6.Start frequency conversion
Motor 1, by 2 speed governing of speed reducer, variable-frequency motor 1 drives transmission shaft 4 to rotate.Since impeller pattern 9 is mounted under transmission shaft 4
End, so impeller pattern 9 follows transmission shaft 4 to rotate.The rotation of impeller pattern 9 will drive the water flowing in test pools 8.It is ideal
Under state, the water in 6 outside of guide shell flows from bottom to top, and the water in 6 inside of guide shell flows from top to bottom.Certainly practical
In, the water against 6 outside of guide shell can not possibly all flow from bottom to top.In the main flow direction of this consideration flow, suddenly
Slightly abut the water flowing in 6 outside of guide shell.The mixing effect of Double-curved-surface stirring machine is：From bottom to top, the diameter of wheel hub gradually subtracts
Small, when one timing of rotating speed, tangential force is gradually reduced, and resultant force is also gradually reduced, and under the action of turbulence plate 12, mixed liquor is formed
Outer ring from bottom to top, the flow regime of inner ring from top to bottom.The effect of guide shell 6 is to ensure the flowing of water as described above, upwards
The flow of flowing (on the outside of guide shell) and flow (in the guide shell) approximately equal to flow downward.Tachymeter 7 is measured by testing the speed
The flow axial velocity of instrument 7.
Test device can be used round test pools 8,8~12 times of 9 diameter of a diameter of impeller pattern of test pools 8,
8 depth of water of test pools is 8~12 times of 9 diameter of impeller pattern, and tested media is cleaning cold water.Guide shell 6 is thin wall cylinder-shaped,
Its internal diameter is 1.1 times of 9 diameter of impeller pattern, convenient for moving up and down for impeller pattern 9.Guide shell 6 is fixed on institute with stabiliser bar 5
State the center of test pools 8.Variable-frequency motor 1 can carry out the adjusting of different rotating speeds as needed.
It is from bottom to top in the lateral fluid main flow direction of guide shell 6 when Double-curved-surface stirring machine is run；In guide shell 6
The direction of portion's fluid flowing is that from the top down, so cycle is continuous.Between 8 wall surface of guide shell 6 and test pools, arbitrary cross-section
Mean flow rate approximately equal.
Due to being limited by condition, practical impeller and device it is oversized, rotating speed is excessively high, it is difficult to carry out prototype examination
It tests.The impeller pattern is model parameter the parameter conversion of full mold by the theory of similarity, with small model test ratio be actually subjected to through
Ji and practicality.
As preference, the mounting height of the tachymeter 7 is between the depth of water 1/3~2/3 in test pools 8.Tachymeter
Mounted on the outside of guide shell 6, the state of 6 both ends flow instability of guide shell is removed, installs and surveys between the depth of water 1/3~2/3
Fast instrument 7 can accurately measure water velocity.
As preference, the connecting rod 10 is four, and the angle of adjacent two connecting rods 10 is in four connecting rods 10
90 degree, n tachymeter 7 is distributed in every connecting rod 10.N is integer.Preferably, 3,4 or 5 n.When test pools 8 are circle
When, theoretically for, the flowing of 8 surrounding water of test pools is identical, selectes 4 directions and installs tachymeters 7, is easy for arranging
And simplification.
As preference, the test pools 8 is round, and the 8~12 of 9 diameter of a diameter of impeller pattern of test pools 8
Times, the depth of water is 8~12 times of 9 diameter of impeller pattern in test pools 8.Limit 9 diameter of a diameter of impeller pattern of test pools 8
8~12 times, reduce the high cost that the excessive test pools 8 of diameter are brought.The depth of the water filled in test pools 8 is impeller
8~12 times of 9 diameter of model.Certain depth of water, it is ensured that generate certain mixing effect.
As preference, the distance h1 of the impeller pattern 9 top to 6 bottom of guide shell is 300mm~600mm, impeller
The distance h2 of 9 bottom of model to 8 bottom of pond of test pools is 1.2 times of 9 diameters of impeller pattern, in the top to test pools 8 of guide shell 6
Water surface distance h3 is 800mm~1200mm.Select these parameters can ensure 9 bottom of impeller pattern away from bottom of pond have it is certain away from
From also ensureing flowing of the top away from 6 bottom a certain distance water of guide shell of impeller pattern 9, the water for also allowing for top is entered and led
In flow cartridge 6.
The efficiency that Double-curved-surface stirring machine is carried out using the device of above-described embodiment is measured, and specific method includes：
Step 10) starts variable-frequency motor 1, drives transmission shaft 4 and impeller pattern 9 to rotate, impeller pattern 9 stirs test pools
Water in 8；The axial flow velocity of water is measured using tachymeter 7；
Step 20) acquires the measured value of each tachymeter 7 in synchronization, calculates the flow of section residing for tachymeter 7
Average velocity of axes；
Step 30) calculates the flow average speed of m section using the method for step 20), then in m different moments
Calculate m+1 total flow average velocity of axes；
Step 40) adjusts variable-frequency electric when total flow average speed of section flow velocity non-setting not equal to mixed liquor
1 rotating speed of machine, is then back to step 20), recalculates total flow average velocity of axes of section, until being equal to scheduled mixing
The non-setting flow velocity of liquid；
Step 50) measures the torque of torque sensor, and calculate when reaching the non-setting flow velocity of scheduled mixed liquor
The shaft power of blender；
Step 60) calculates the specific power of impeller pattern 9；
The specific power of the impeller pattern 9 is scaled practical impeller and actual speed by step 70) by the theory of similarity of pump
Under specific power.
In above-described embodiment, in the step 20), put down the speed average of each tester 7 as the axial direction of section
Equal speed.
In the step 50), the shaft power P of blender is calculated according to formula (1)；
P=2 π nT/60 formulas (1)
In formula：N is the final rotating speed of impeller pattern 9, and T is the torque of torque sensor 11.
The step 60 specifically includes：The ratio between volume by the shaft power of the blender and test pools 8 is used as impeller
The specific power of model 9.
The preferred implementation case that case is only the utility model is embodied described in the utility model, is not used for
Limit the scope of the utility model.Equivalence changes made by i.e. all contents according to present utility model application the scope of the claims with repair
Decorations, all should be used as the technology scope of the utility model.
Claims (7)
1. a kind of efficiency measurement device for Double-curved-surface stirring machine, which is characterized in that the measurement device includes variable-frequency motor
（1）, speed reducer（2）, rack（3）, transmission shaft（4）, stabiliser bar（5）, guide shell（6）, tachymeter（7）, test pools（8）, even
Extension bar（10）, torque sensor（11）And turbulence plate（12）, variable-frequency motor（1）, speed reducer（2）, rack（3）And torque sensor
（11）Positioned at test pools（8）Top, variable-frequency motor（1）Power output shaft and speed reducer（2）Input axis connection, slow down
Machine（2）Power output shaft and transmission shaft（4）Pass through rack（3）Transition connects, speed reducer（2）Power output shaft and transmission shaft
（4）Between assemble torque sensor（11）；Rack（3）It is fixedly connected on test pools（8）On, transmission shaft（4）Positioned at test water
Pond（8）In；Guide shell（6）Pass through stabiliser bar（5）It is fixed on the test pools（8）Center；Transmission shaft（4）Positioned at guide shell
（6）In inner cavity, and transmission shaft（4）With guide shell（6）Coaxially, transmission shaft（4）Both ends are pierced by guide shell（6）；Tachymeter（7）It is fixed
It is connected to connecting rod（10）On, connecting rod（10）It is connected to test pools（8）And guide shell（6）Between, and tachymeter（7）It is located at
Test pools（8）Same section on；Turbulence plate（12）It is fixedly connected on test pools（8）Wall surface on.
2. the efficiency measurement device according to claim 1 for Double-curved-surface stirring machine, it is characterised in that：It further include impeller
Model（9）, the impeller pattern（9）It is connected to transmission shaft（4）Lower end.
3. the efficiency measurement device according to claim 1 for Double-curved-surface stirring machine, it is characterised in that：The tachymeter
（7）Mounting height be test pools（8）Between the middle depth of water 1/3~2/3.
4. the efficiency measurement device according to claim 1 for Double-curved-surface stirring machine, it is characterised in that：The connecting rod
（10）It is four, four connecting rods（10）In adjacent two connecting rods（10）Angle be 90 degree, every connecting rod（10）Upper point
N tachymeter of cloth（7）；N is integer.
5. the efficiency measurement device according to claim 1 for Double-curved-surface stirring machine, it is characterised in that：The turbulence plate
（12）It is four, four turbulence plates（12）Along test pools（8）Circumferentially it is uniformly distributed.
6. the efficiency measurement device according to claim 2 for Double-curved-surface stirring machine, it is characterised in that：The test water
Pond（8）For circle, test pools（8）A diameter of impeller pattern（9）8~12 times of diameter, test pools（8）The middle depth of water is leaf
Take turns model（9）8~12 times of diameter.
7. the efficiency measurement device according to claim 2 for Double-curved-surface stirring machine, it is characterised in that：
The impeller pattern（9）Top is to guide shell（6）The distance h1 of bottom is 300mm~600mm, impeller pattern（9）Bottom
To test pools（8）The distance h2 of bottom of pond is 1.2 times of impeller patterns（9）Diameter, guide shell（6）Top is to test pools（8）In
Water surface distance h3 is 800 mm~1200mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721812428.1U CN207675345U (en) | 2017-12-22 | 2017-12-22 | A kind of efficiency measurement device for Double-curved-surface stirring machine |
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| CN201721812428.1U CN207675345U (en) | 2017-12-22 | 2017-12-22 | A kind of efficiency measurement device for Double-curved-surface stirring machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225634A (en) * | 2017-12-22 | 2018-06-29 | 合肥工业大学 | A kind of efficiency measurement device and assay method for Double-curved-surface stirring machine |
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2017
- 2017-12-22 CN CN201721812428.1U patent/CN207675345U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225634A (en) * | 2017-12-22 | 2018-06-29 | 合肥工业大学 | A kind of efficiency measurement device and assay method for Double-curved-surface stirring machine |
| CN108225634B (en) * | 2017-12-22 | 2024-01-02 | 合肥工业大学 | Energy efficiency measuring device and measuring method for hyperboloid stirrer |
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