CN107356365A - Drag reducer drag reduction effect experimental provision and method in water ring vacuum pump - Google Patents
Drag reducer drag reduction effect experimental provision and method in water ring vacuum pump Download PDFInfo
- Publication number
- CN107356365A CN107356365A CN201710554527.2A CN201710554527A CN107356365A CN 107356365 A CN107356365 A CN 107356365A CN 201710554527 A CN201710554527 A CN 201710554527A CN 107356365 A CN107356365 A CN 107356365A
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- Prior art keywords
- ring vacuum
- drag
- vacuum pump
- water
- water ring
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
Abstract
The invention discloses drag reducer drag reduction effect experimental provision and method in a kind of water ring vacuum pump.Its frequency conversion instrument, motor, water ring vacuum pump, pressure sensor, tolerance flowmeter, data collection and control device, fluid reservoir.It is characterized in that：The frequency conversion instrument connects motor, and motor connects water ring vacuum pump by torque and speed sensorses；The air inlet pipe of the water ring vacuum pump is sequentially connected air volume regulating valve, tolerance flowmeter and pressure sensor.The blast pipe is stretched into fluid reservoir, and fluid reservoir connects water ring vacuum pump by liquid supplementation pipe, and control valve and spinner flowmeter are connected in liquid supplementation pipe.By control two in three drag reduction agent concentration, temperature, rotating speed parameters it is constant, test tolerance and shaft power of the drag reducer under different condition of negative pressure, contrasted with the water ring vacuum pump performance using pure water as working media, the drag-reduction effect of drag reducer is calculated, and evaluates the concentration, temperature, rotating speed of drag reducer to water ring vacuum pump drag-reduction effect and the persistent influence of drag reduction.
Description
Technical field
The drag-reduction property experimental apparatus flowed the present invention relates to a kind of drag reduction agent solution in water ring vacuum pump and test side
Method, the drag-reduction effect for more different drag reducers to water ring vacuum pump.
Background technology
Fluid flow resistance can be greatly reduced in drag reducer, be widely used to petroleum transportation, fire-fighting fire extinguishing, water-carriage system etc.
Field, and generate significant Social benefit and economic benefit.However, existing research focuses primarily upon drag reducer to pipe stream condition
Under drag-reduction effect evaluation, rarely have be related to drag reducer convection body machinery property of reduction drag research.Recently, " one kind is using high for patent
The method that molecule drag reducer improves the gas drainage under suction Water-ring vacuum efficiency of pump "（Application number：2017104002298）Report macromolecule
Drag reducer to the remarkable effect of water ring vacuum pump improved efficiency, only colliery field can year amount of electricity saving more than 2,500,000,000 kW h, to me
State realizes in colliery that the target of energy-saving and emission-reduction has the meaning of milestone.
Under the conditions of patent CN 200710117757.9, CN 200910022073.X disclose drag reducer to liquid line stream
Drag-reduction effect experimental provision, except that, patent CN 200910022073.X for surfactant drag reducer produce
The problem of foam, has done further improvement.Patent CN 200910218500.1 is established in pipe to be subtracted under the conditions of two phase flow
Hinder effects device.Above patent is drag-reduction effect of the research drag reducer under various concentrations using pipe as object.
But the drag-reduction effect quality of drag reducer also with its residing for flowing reynolds number range, solution temperature, drag reduction it is lasting
Relating to parameters, the existing apparatus such as property do not consider.Importantly, the reality evaluated on drag reducer water ring vacuum pump drag-reduction effect
Experiment device is not set up also, and this is adapted to further finding the drag reducer of water ring vacuum pump operating condition to be unfavorable.
The content of the invention
The present invention seeks to overcome the shortcomings of in prior art, there is provided a kind of temperature and flowing Reynolds number are controllable, have and follow
Drag reducer drag reduction experimental provision in the water ring vacuum pump of ring shearing function, for testing different drag reducers in concentration, temperature, Reynolds
To the resistance reducing performance of water ring vacuum pump flow resistance under the conditions of number etc., preferably optimal drag reducer, basic number is provided for engineer applied
According to.
The present invention is to realize the technical scheme that invention mesh uses：What a kind of drag reduction agent solution flowed in water ring vacuum pump subtracts
Characteristic experimental apparatus is hindered, including：Frequency conversion instrument, motor, water ring vacuum pump, pressure sensor, tolerance flowmeter, data acquisition and control
Device processed, fluid reservoir.It is characterized in that：The frequency conversion instrument connects motor, and motor is true by torque and speed sensorses connection water ring
Empty pump；The air inlet pipe of the water ring vacuum pump is sequentially connected air volume regulating valve, tolerance flowmeter and pressure sensor.The exhaust
Pipe is stretched into fluid reservoir, and fluid reservoir connects water ring vacuum pump by liquid supplementation pipe, and control valve and spinner flowmeter are connected in liquid supplementation pipe.
Heater and temperature sensor are provided with the fluid reservoir, is additionally provided with agitator.
The data collection and control device collection is by torque and speed sensorses, pressure sensor, tolerance flowmeter, temperature
Four shaft power, pressure, tolerance and temperature parameters of sensor transmissions, and adjust the rotating speed of frequency conversion instrument and air volume regulating valve and open
Degree.
The drag reduction proposed by the present invention flowed using experimental provision of the present invention test drag reduction agent solution in water ring vacuum pump
Characterization method, comprise the following steps：
Step 1. adds pure water into fluid reservoir, is not added with drag reducer.
The drag-reduction property experimental apparatus that step 2. is flowed using above-mentioned drag reduction agent solution in water ring vacuum pump, control water
One in two temperature, rotating speed parameters, in different water temperatures（Rotating speed）Under the conditions of, different negative pressure operating modes are measured by air volume regulating valve
The shaft power and tolerance of drag water ring vacuum pump, calculate the efficiency of water ring vacuum pump.
Step 3. adds the detected drag reducer of various concentrations into fluid reservoir, is sufficiently mixed uniformly using agitator；Weight
The operation of multiple step 2, obtains the Water-ring vacuum efficiency of pump under different drag reduction agent concentrations, solution temperature, speed conditions.
Step 4. tests drag reduction solution in water ring vacuum pump during long-play, water ring under negative pressure -60kPa operating modes
The efficiency change trend of vavuum pump, record the data of the efficiency of pump under same time interval.
The processing of step 5. test data, water ring vacuum pump drag reducing efficiency is based on the relative change rate before and after addition drag reducer
Calculate, i.e. DR=（ηDR-ηWater）/ηWater；In formula, DR is water ring vacuum pump drag reducing efficiency, ηDRFor the Water-ring vacuum pump efficiency after addition drag reducer
Rate, ηWaterFor no addition drag reducer when Water-ring vacuum this efficiency.
Experimental provision of the present invention, suitable for evaluation variety classes drag reducer under the conditions of various concentrations, temperature, Reynolds number etc.
Drag-reduction effect and its drag reduction persistence；Simultaneously, there is provided a kind of method of testing for evaluating drag-reduction effect, this method are true with water ring
The empty efficiency of pump has taken into full account the uncertainty that tolerance, shaft power are different caused by medium difference is possible as evaluation object
Factor, data basis is provided preferably to go out the drag reducer of suitable water ring vacuum pump operating condition, this method is simple and reliable.
Brief description of the drawings
Fig. 1 is the drag-reduction property experimental apparatus that the drag reduction agent solution of the present invention flows in water ring vacuum pump.
In figure：1st, frequency conversion instrument；2nd, motor；3rd, torque and speed sensorses；4th, water ring vacuum pump；5th, pressure sensor；6th, gas
Measure flowmeter；7th, air volume regulating valve；8th, air inlet pipe；9th, blast pipe；10th, temperature sensor；11st, heater；12nd, fluid reservoir；13、
Agitator；14th, data collection and control device；15th, spinner flowmeter；16th, liquid supplementation pipe；17th, control valve.
Embodiment
With reference to the accompanying drawings and examples, the present invention is further illustrated.
Shown in Fig. 1, experimental provision of the present invention includes：Frequency conversion instrument 1, motor 2, torque and speed sensorses 3, water ring vacuum pump 4,
Pressure sensor 5, tolerance flowmeter 6, temperature sensor 10, air inlet pipe 8, blast pipe 9, data collection and control device 14 and storage
Flow container 12 etc..The air inlet pipe 8 of wherein water ring vacuum pump 4 is connected with the air inlet of model water ring vacuum pump 4, and is sequentially connected tolerance
Regulating valve 7, tolerance flowmeter 6 and pressure sensor 5.The blast pipe 9 of water ring vacuum pump 4 and the exhaust outlet phase of water ring vacuum pump 4
Even, blast pipe 9 is stretched into fluid reservoir 12, and fluid reservoir 12 passes through the fluid infusion of the link model water ring vacuum pump 4 of liquid supplementation pipe 16, fluid infusion
Control valve 17 and spinner flowmeter 15 are connected on pipe 16.Data collection and control device 14 gathers torque and speed sensorses 3, pressure
The data signal that sensor 5, tolerance flowmeter 6, temperaturecontrol sensor 10 transmit, and adjust frequency conversion instrument 1 and air volume regulating valve 7
Rotating speed and aperture.Heater 11 and temperature sensor 10 are provided with the fluid reservoir, is additionally provided with agitator.Heater 11 and temperature
Spend sensor 10 to be connected, the stirring vane of agitator 13 is placed in fluid reservoir 12.
The drag-reduction property experimental apparatus flowed using drag reduction agent solution of the present invention in water ring vacuum pump, test drag reducer are molten
The property of reduction drag that liquid flows in water ring vacuum pump, operation principle（Procedure）：Drag reducer is uniformly added into fluid reservoir 12 simultaneously
Drag reducer is completely dissolved in water using agitator 13, form certain density drag reduction agent solution；Open model Water-ring vacuum
Pump 4, drag reduction agent solution is set to enter by liquid supplementation pipe 16 in water ring vacuum pump, the working media as water ring vacuum pump carries out gas
Pump drainage, fluid infusion flow is by control valve 17 and spinner flowmeter 15 is controlled by and reading, ensure different condition under flow
It is equal, eliminate because in water ring vacuum pump amount of liquid it is different and caused by the tolerance factor different with shaft power.Further, number is passed through
Frequency conversion instrument 1, temperature sensor 10 are adjusted according to collection and control device 14, it is a certain fixed value to make rotating speed and solution temperature, then is adjusted
Solar term adjustable valve 7 changes the operation negative pressure of water ring vacuum pump 4, passes through pressure sensor 5, torque and speed sensorses 3 and tolerance
Flowmeter 6 obtains shaft power and gas flow under corresponding negative pressure, can thus calculate under this concentration, rotating speed, solution temperature
The Water-ring vacuum efficiency of pump.Air volume regulating valve 7 is adjusted, the negative pressure of pressure sensor 5 is shown as -60kPa, long-play mould
Type water ring vacuum pump 4, it is recorded in efficiency under the operating mode and changes with time rule, evaluates the drag reduction persistence of drag reducer.
According to above-mentioned experimental procedure, change one in three drag reduction agent concentration, solution temperature, rotating speed parameters successively, from
And obtain the efficiency and drag reduction persistence of water ring vacuum pump under the conditions of this.The processing of test data is finally carried out, drag reduction can be drawn
Influence of the concentration, temperature, rotating speed of agent to water ring vacuum pump drag-reduction effect, based on this, preferably go out to be suitable for water ring vacuum pump fortune
The drag reducer of row operating mode.
Claims (2)
1. the drag-reduction property experimental apparatus that a kind of drag reduction agent solution flows in water ring vacuum pump, including：Frequency conversion instrument, motor, water
Ring vacuum pump, pressure sensor, tolerance flowmeter, data collection and control device, fluid reservoir；It is characterized in that：The frequency conversion
Instrument connects motor, and motor connects water ring vacuum pump by torque and speed sensorses；The air inlet pipe of the water ring vacuum pump connects successively
Connect air volume regulating valve, tolerance flowmeter and pressure sensor；The blast pipe is stretched into fluid reservoir, and fluid reservoir is connected by liquid supplementation pipe
Water receiving ring vacuum pump, control valve and spinner flowmeter are connected in liquid supplementation pipe；Heater and TEMP are provided with the fluid reservoir
Device, it is additionally provided with agitator；
The data collection and control device collection is by torque and speed sensorses, pressure sensor, tolerance flowmeter, TEMP
Four shaft power, pressure, tolerance and temperature parameters of device transmission, and adjust the rotating speed and aperture of frequency conversion instrument and air volume regulating valve.
A kind of 2. property of reduction drag that experimental provision test drag reduction agent solution of usage right requirement 1 flows in water ring vacuum pump
Method, comprise the following steps：
Step 1. adds pure water into fluid reservoir, is not added with drag reducer；
The drag-reduction property experimental apparatus that step 2. is flowed using above-mentioned drag reduction agent solution in water ring vacuum pump, control water temperature, turn
One in fast two parameters, under different water temperatures or speed conditions, mould under different negative pressure operating modes is measured by air volume regulating valve
The shaft power and tolerance of type water ring vacuum pump, calculate the efficiency of water ring vacuum pump；
Step 3. adds the detected drag reducer of various concentrations into fluid reservoir, is sufficiently mixed uniformly using agitator；Repeat to walk
Rapid 2, obtain the Water-ring vacuum efficiency of pump under different drag reduction agent concentrations, solution temperature, speed conditions；
Step 4. tests drag reduction solution in water ring vacuum pump during long-play, Water-ring vacuum under negative pressure -60kPa operating modes
The efficiency change trend of pump, record the data of the efficiency of pump under same time interval；
The processing of step 5. test data, water ring vacuum pump drag reducing efficiency are calculated by the relative change rate before and after addition drag reducer：
DR=（ηDR-ηWater）/ηWater
In formula, DR is water ring vacuum pump drag reducing efficiency, ηDRFor the Water-ring vacuum efficiency of pump after addition drag reducer, ηWaterSubtract for no addition
Water-ring vacuum this efficiency during resist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554527.2A CN107356365A (en) | 2017-07-10 | 2017-07-10 | Drag reducer drag reduction effect experimental provision and method in water ring vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554527.2A CN107356365A (en) | 2017-07-10 | 2017-07-10 | Drag reducer drag reduction effect experimental provision and method in water ring vacuum pump |
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| CN107356365A true CN107356365A (en) | 2017-11-17 |
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| CN201710554527.2A Pending CN107356365A (en) | 2017-07-10 | 2017-07-10 | Drag reducer drag reduction effect experimental provision and method in water ring vacuum pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661696A (en) * | 2018-05-14 | 2018-10-16 | 中国矿业大学 | A kind of totally-enclosed gas pumping pump energy conserving system based on drag reduction working solution |
| CN108871052A (en) * | 2018-04-20 | 2018-11-23 | 中国舰船研究设计中心 | Public affair ship water cannon consolidation system based on surface-active drag reduction technology |
| WO2020082285A1 (en) * | 2018-10-25 | 2020-04-30 | Edwards Technologies Vacuum Engineering (Qingdao) Co Ltd | Liquid ring pump control |
| CN111140507A (en) * | 2019-12-05 | 2020-05-12 | 国网河北省电力有限公司电力科学研究院 | Method for measuring air suction amount of water-ring vacuum pump and terminal equipment |
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| US20080064785A1 (en) * | 2005-06-14 | 2008-03-13 | Baker Hughes Incorporated | Bi- or Multi-Modal Particle Size Distribution To Improve Drag Reduction Polymer Dissolution |
| CN101545843A (en) * | 2009-04-16 | 2009-09-30 | 西安交通大学 | Drag-reduction property experimental apparatus for surfactant solution |
| CN101696925A (en) * | 2009-10-23 | 2010-04-21 | 西安交通大学 | Device and method for testing performance of two-phase flow drag reducer |
| US20120245061A1 (en) * | 2011-03-21 | 2012-09-27 | Clearwater International, Llc | Enhancing drag reduction properties of slick water systems |
| CN103048243A (en) * | 2011-10-13 | 2013-04-17 | 中国石油化工股份有限公司 | Simulative friction measuring device |
| CN104914014A (en) * | 2015-07-01 | 2015-09-16 | 中国华能集团清洁能源技术研究院有限公司 | Test system and test method for frictional resistance of hydraulic fracturing fluid |
| CN204679268U (en) * | 2015-06-09 | 2015-09-30 | 哈尔滨工程大学 | Oil and gas multiphase flow Pump Characteristic Test System |
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Patent Citations (8)
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| US20080064785A1 (en) * | 2005-06-14 | 2008-03-13 | Baker Hughes Incorporated | Bi- or Multi-Modal Particle Size Distribution To Improve Drag Reduction Polymer Dissolution |
| CN101545843A (en) * | 2009-04-16 | 2009-09-30 | 西安交通大学 | Drag-reduction property experimental apparatus for surfactant solution |
| CN101696925A (en) * | 2009-10-23 | 2010-04-21 | 西安交通大学 | Device and method for testing performance of two-phase flow drag reducer |
| US20120245061A1 (en) * | 2011-03-21 | 2012-09-27 | Clearwater International, Llc | Enhancing drag reduction properties of slick water systems |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871052A (en) * | 2018-04-20 | 2018-11-23 | 中国舰船研究设计中心 | Public affair ship water cannon consolidation system based on surface-active drag reduction technology |
| CN108661696A (en) * | 2018-05-14 | 2018-10-16 | 中国矿业大学 | A kind of totally-enclosed gas pumping pump energy conserving system based on drag reduction working solution |
| CN108661696B (en) * | 2018-05-14 | 2019-07-02 | 中国矿业大学 | A kind of totally-enclosed gas drainage pump energy conserving system based on drag reduction working solution |
| WO2020082285A1 (en) * | 2018-10-25 | 2020-04-30 | Edwards Technologies Vacuum Engineering (Qingdao) Co Ltd | Liquid ring pump control |
| CN111140507A (en) * | 2019-12-05 | 2020-05-12 | 国网河北省电力有限公司电力科学研究院 | Method for measuring air suction amount of water-ring vacuum pump and terminal equipment |
| CN111140507B (en) * | 2019-12-05 | 2021-10-15 | 国网河北省电力有限公司电力科学研究院 | Method for measuring air suction amount of water-ring vacuum pump and terminal equipment |
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| CB02 | Change of applicant information |
Address after: 221116 No. 1 University Road, copper mountain, Jiangsu, Xuzhou Applicant after: China University of Mining & Technology Address before: 221116 Xuzhou University Road, Jiangsu, No. 1 Applicant before: China University of Mining & Technology |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171117 |
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| RJ01 | Rejection of invention patent application after publication |