CN104179670B - Using the measuring method of water pump assembly fractional energy savings after re-manufacturing technology - Google Patents
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Abstract
The invention discloses a kind of measuring method using water pump assembly fractional energy savings after re-manufacturing technology, voltameter and flowmeter are set, steady working condition of the measurement based on same or like flow velocity is simultaneously arranged using unit volume power consumption as fractional energy savings index under rotating speed, and the measurement twice that the cycle is 2 hours is carried out to water pump operation parameter；The water pump unit volume power consumption measured every time is calculated, the power consumption is modified to unit volume power consumption under pump shaft power mark condition；The correction value phase rate measured twice answers≤0.5%, takes and measures the average value of correction value twice as energy consumption a reference value；To water pump reparation and continuously run more than 30 days using re-manufacturing technology, simultaneously unit volume power consumption under pump shaft power mark condition is calculated after reparation in duplicate measurements, and the power consumption is used as energy use check-up value, passes through energy consumption a reference value and examination value calculating fractional energy savings.Water pump assembly fractional energy savings after this method accurate measurement application re-manufacturing technology, makes accurate evaluation to re-manufacturing technology application, reaches energy-saving and emission-reduction purpose.
Description
Technical field
The present invention relates to a kind of measuring method using water pump assembly fractional energy savings after re-manufacturing technology.
Background technology
The re-manufacturing technology (abbreviation re-manufacturing technology) of plant equipment in operation is reflected by Chinese mechanical industry federation
A fixed new scientific and technological achievement, it is National Energy Board's keypoint recommendation, the novel energy-conserving technology promoted.The technology is to water pump
Body construction does not do any transformation, only by adding self repairing agent in water pump bearing lubricating oil, is rubbed using plant equipment itself
Heat energy caused by wiping, be dynamically completed the self-repair procedure of metal abrasion, generate excellent performance with virgin metal without obvious boundary
The cermet protective layer in face, assign wear surface new physics and chemical state, so as to reduce coefficient of friction, reduce water pump and drive
The power output of dynamic motor, reaches the purpose for reducing energy consumption, its application prospect is very considerable, and target for energy-saving and emission-reduction is realized to China
It is significant.
But re-manufacturing technology is not grown in the time of China's commercial Application, the fractional energy savings measurement side after being applied in various kinds of equipment
Method is without ripe experience for reference.GB/T16666-1996《Pump class and liquid conveying system energy-saving detection method》Related only in standard
The calculating of the separate unit efficiency of pump, efficiency and fractional energy savings to whole unit measure several nothings and are related to.It is it can be seen that related to re-manufacturing technology
Unit fractional energy savings measurement national standard still belongs to space state.
In addition, according to the experiment of substantial amounts of field apparatus and the calculated results, the fractional energy savings of re-manufacturing technology 2% to
Between 10%, but the operating condition of field apparatus is varied, operating mode factor (such as pump entrance liquid level, outlet pressure
Deng) water pump unit volume power consumption stability bandwidth caused by change is 6% or so, how accurate measurement re-manufacturing technology is on water pump
Fractional energy savings after is always the problem of the technical field, and the power-saving technology is difficult to the bottleneck promoted.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of survey using water pump assembly fractional energy savings after re-manufacturing technology
Amount method, using this method can after accurate measurement application re-manufacturing technology water pump assembly fractional energy savings, re-manufacturing technology is answered
With accurate evaluation is made, be advantageous to the popularization and application of re-manufacturing technology, reach the purpose of energy-saving and emission-reduction.
In order to solve the above technical problems, the present invention includes using the measuring method of water pump assembly fractional energy savings after re-manufacturing technology
Following steps：
Step 1: the electrical power control cabinet of water pump assembly is provided for measuring the voltameter of water pump assembly power consumption, water pump machine
Group outlet conduit is provided for measuring the flowmeter of delivery of pump；
Step 2: setting water pump operation is in the same or like steady working condition of flow velocity and a certain agreement rotating speed, water pump power consumption
Amount is relevant with flow, lift, and under conditions of lift keeps constant, the power consumption of water pump is directly proportional to flow, sets water pump machine
Group fractional energy savings index is unit volume power consumption；
Step 3: water pump unit volume power consumption is measured twice in the case where arranging rotating speed, and power consumption and displacement
Synchro measure, each measurement period is 2 hours, in measurement period, the total inlet pressure of water pump assembly, main entrance liquid level,
General export pressure, general export liquid level synchro measure, 10 minutes measurement data sampling intervals, and marked traffic meter measurement position
Put, flowmeter measurement position is identical during measurement every time；
Step 4: taking arithmetic mean of instantaneous value to each measurement data measured every time, and calculate what is measured every time by following equation
Water pump unit volume power consumption,
In formula (1) and formula (2), H is pump head, and η is pump efficiency, and P is water pump power consumption, and Q is pump capacity, POutlet
For water pump assembly general export pressure, PEntranceFor water pump assembly total inlet pressure, hEntrance liquid levelFor water pump assembly main entrance liquid level, e
For water pump unit volume power consumption；ρ is the density of water, and g is acceleration of gravity；
Step 5: unit volume power consumption under pump shaft power standard condition is calculated, to the water pump unit bodies measured every time
Product power consumption is modified, and correction factor is：
In formula (3), ζ is correction factor, POutlet 1Water pump assembly general export pressure, P during to measure for the first timeOutlet 2For second
Water pump assembly general export pressure, h during measurementEntrance liquid level 1Water pump assembly main entrance liquid level, h during to measure for the first timeEntrance liquid level 2For
Water pump assembly main entrance liquid level during double measurement,
Water pump mark condition unit volume power consumption e after then correcting2For：
e2=e* ζ (4)
Step 6: the phase rate for measuring revised water pump mark condition unit volume power consumption twice answers≤0.5%, otherwise survey
It is invalid to measure, need to increase pendulous frequency until measurement data it is qualified, taken after measurement data is qualified and measure revised water pump twice
Mark energy consumption a reference value of the average value of condition unit volume power consumption as water pump under agreement rotating speed；
Step 7: adding renovation agent to pump shaft bearing using re-manufacturing technology and continuously running more than 30 days, arranging
Repeat step three measures the water pump mark condition unit volume power consumption after re-manufacturing technology and examined as energy consumption to step 6 under rotating speed
Core value；
Step 8: the fractional energy savings of the water pump after re-manufacturing technology is repaired is calculated, the energy consumption a reference value of water pump before setting is repaired
For ej, the energy use check-up value of water pump is e after reparationb, then fractional energy savings ξ be：
Be applied the fractional energy savings of water pump after re-manufacturing technology by formula (5).
Further, the measuring accuracy of above-mentioned voltameter is ± 0.5%.
Further, above-mentioned flowmeter should be located at the position of 4 ratios after 6 before water pump assembly water outlet straight tube, water outlet length of straight pipe
For 10 times of water outlet straight tube caliber.
Because the measuring method of the invention using water pump assembly fractional energy savings after re-manufacturing technology employs above-mentioned technical proposal,
Voltameter and flowmeter are set first, the steady working condition based on same or like flow velocity is measured and arranges under rotating speed with unit bodies
Product power consumption is fractional energy savings index, and the measurement twice that the cycle is 2 hours, measurement data sampling interval are carried out to water pump operation parameter
10 minutes；The water pump unit volume power consumption measured every time is calculated using formula, and the power consumption is modified to pump shaft power
Unit volume power consumption under standard condition；The correction value phase rate measured twice answers≤0.5%, then takes and measures correction value twice
Average value as energy consumption a reference value, water pump is repaired using re-manufacturing technology and continuously run more than 30 days, repeats to survey
Measure and unit volume power consumption under pump shaft power standard condition be calculated after reparation, the power consumption as energy use check-up value,
By to pump energy consumption a reference value and examination value carrying out that fractional energy savings is calculated.This method can accurate measurement application re-manufacturing technology
Accurate evaluation is made in the fractional energy savings of water pump assembly afterwards, the application to re-manufacturing technology, is advantageous to the popularization and application of re-manufacturing technology,
Reach the purpose of energy-saving and emission-reduction.
Embodiment
The present invention comprises the following steps using the measuring method of water pump assembly fractional energy savings after re-manufacturing technology：
Step 1: the electrical power control cabinet of water pump assembly is provided for measuring the voltameter of water pump assembly power consumption, water pump machine
Group outlet conduit is provided for measuring the flowmeter of delivery of pump；
Step 2: setting water pump operation is in the same or like steady working condition of flow velocity and a certain agreement rotating speed, water pump power consumption
Amount is relevant with flow, lift, and under conditions of lift keeps constant, the power consumption of water pump is directly proportional to flow, sets water pump machine
Group fractional energy savings index is unit volume power consumption；
Step 3: water pump unit volume power consumption is measured twice in the case where arranging rotating speed, and power consumption and displacement
Synchro measure, each measurement period is 2 hours, in measurement period, the total inlet pressure of water pump assembly, main entrance liquid level,
General export pressure, general export liquid level synchro measure, 10 minutes measurement data sampling intervals, and marked traffic meter measurement position
Put, flowmeter measurement position is identical during measurement every time；
Step 4: taking arithmetic mean of instantaneous value to each measurement data measured every time, and calculate what is measured every time by following equation
Water pump unit volume power consumption,
In formula (1) and formula (2), H is pump head, and η is pump efficiency, and P is water pump power consumption, and Q is pump capacity, POutlet
For water pump assembly general export pressure, PEntranceFor water pump assembly total inlet pressure, hEntrance liquid levelFor water pump assembly main entrance liquid level, e
For water pump unit volume power consumption；ρ is the density of water, and g is acceleration of gravity；
Step 5: unit volume power consumption under pump shaft power standard condition is calculated, to the water pump unit bodies measured every time
Product power consumption is modified, and correction factor is：
In formula (3), ζ is correction factor, POutlet 1Water pump assembly general export pressure, P during to measure for the first timeOutlet 2For second
Water pump assembly general export pressure, h during measurementEntrance liquid level 1Water pump assembly main entrance liquid level, h during to measure for the first timeEntrance liquid level 2For
Water pump assembly main entrance liquid level during double measurement,
Water pump mark condition unit volume power consumption e after then correcting2For：
e2=e* ζ (4)
The shaft power for not having energy saving condition that is ready-made, meeting re-manufacturing technology in all kinds of water pump handbooks or reference book is changed
Formula is calculated, therefore according to the substantial amounts of experimental verification of efficiency curve and scene of water pump, water pump efficiency when flow small range changes
Approximate constant, therefore when flow small range changes, the power consumption of formula (4) amendment water pump can be used under standard condition；
According to the characteristic curve of water pump, when pump capacity changes, pump efficiency can also change therewith, therefore,
When carrying out contrast test, need to ensure the flow volume change values of water pump before and after contrast test can not occur too big fluctuation, typically need
Flow volume change values are wanted to be no more than 5%, preferably not more than 3%, and it is optimal near the design discharge point of water pump；
The amendment of water pump unit volume power consumption can effectively eliminate the energy consumption because of caused by water pump operation working conditions change and fluctuate,
Ensure the accuracy that fractional energy savings calculates；
Step 6: the phase rate for measuring revised water pump mark condition unit volume power consumption twice answers≤0.5%, otherwise survey
It is invalid to measure, need to increase pendulous frequency until measurement data it is qualified, taken after measurement data is qualified and measure revised water pump twice
Mark energy consumption a reference value of the average value of condition unit volume power consumption as water pump under agreement rotating speed；
Step 7: adding renovation agent to pump shaft bearing using re-manufacturing technology and continuously running more than 30 days, arranging
Repeat step three measures the water pump mark condition unit volume power consumption after re-manufacturing technology and examined as energy consumption to step 6 under rotating speed
Core value；
Step 8: the fractional energy savings of the water pump after re-manufacturing technology is repaired is calculated, the energy consumption a reference value of water pump before setting is repaired
For ej, the energy use check-up value of water pump is e after reparationb, then fractional energy savings ξ be：
Be applied the fractional energy savings of water pump after re-manufacturing technology by formula (5).
Further, the measuring accuracy of above-mentioned voltameter is ± 0.5%, accurately to measure electrical power consumption of water pump.
Further, above-mentioned flowmeter should be located at the position of 4 ratios after 6 before water pump assembly water outlet straight tube, water outlet length of straight pipe
About 10 times of caliber.Flowmeter should carry out flow measurement according to operating specification, it is impossible to, otherwise water pump too near apart from water pump vane
Turbulent flow at impeller influences whether the measurement accuracy of flow.
Re-manufacturing technology does not do any transformation, therefore this method measurement and calculating water pump section to water pump body and pipe network structure
Front and rear unit volume power consumption can be transformed and corrected to identical standard condition, obtain energy consumption a reference value before and after water pump modification
With energy use check-up value, so as to which water pump be calculated using the fractional energy savings after re-manufacturing technology.
Such as by taking a certain water circulating pump unit as an example, the unit shares 7 water pumps, opens 4 for 3, pump rotary speed is constant, flow velocity
Under conditions of basicly stable, water pump unit volume power consumption twice is measured before renovation agent filling, every time measurement 2 hours, together
Pacing amount pump entrance liquid level, outlet meter pressure and flow velocity.Applying step three measures and is calculated the energy of water pump to step 6
Consume a reference value.
After renovation agent fills 30 days, water pump is measured and calculated in the same way, obtains the energy use check-up of water pump
Value.The fractional energy savings after water pump application re-manufacturing technology is calculated using step 8.
Through actual measurement and calculate, the standard condition value error rate of unit volume power consumption is twice before renovation agent filling：
(178.1178.0)/178=0.056%.
The standard condition value error rate of unit volume power consumption is twice after renovation agent filling：(171.32-171.06)/171.32
=0.15%.
So as to the mutual authentication science and accuracy of this method.The measurement data of water pump before and after specific renovation agent filling
See Tables 1 and 2.
Table 1：Water pump measurement data before renovation agent filling
Table 2：Water pump measurement data after renovation agent filling (renovation agent fills time 2012.08.08)
Claims (2)
1. a kind of measuring method using water pump assembly fractional energy savings after re-manufacturing technology, it is characterised in that this method includes following step
Suddenly：
Step 1: the electrical power control cabinet of water pump assembly is provided for measuring the voltameter of water pump assembly power consumption, water pump assembly goes out
Mouth pipeline is provided for measuring the flowmeter of delivery of pump；
Step 2: setting water pump operation is in the same or like steady working condition of flow velocity and a certain agreement rotating speed, water pump power consumption with
Flow, lift are relevant, and under conditions of lift keeps constant, the power consumption of water pump is directly proportional to flow, set water pump assembly section
Energy rate index is unit volume power consumption；
Step 3: water pump unit volume power consumption is measured twice in the case where arranging rotating speed, and power consumption is synchronous with displacement
Measurement, each measurement period is 2 hours, in measurement period, the total inlet pressure of water pump assembly, main entrance liquid level, is always gone out
Mouth pressure, general export liquid level synchro measure, 10 minutes measurement data sampling intervals, and marked traffic meter measurement position, often
Flowmeter measurement position is identical during secondary measurement；
Step 4: taking arithmetic mean of instantaneous value to each measurement data measured every time, and the water pump measured every time is calculated by following equation
Unit volume power consumption,
<mrow>
<mi>P</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>&rho;</mi>
<mi>g</mi>
<mi>Q</mi>
<mi>H</mi>
</mrow>
<mi>&eta;</mi>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>)</mo>
</mrow>
</mrow>
In formula (1) and formula (2), H is pump head, and η is pump efficiency, and P is water pump power consumption, and Q is pump capacity, POutletFor water
Pump assembly general export pressure, PEntranceFor water pump assembly total inlet pressure, hEntrance liquid levelFor water pump assembly main entrance liquid level, e is water
Infusion pump unit volume power consumption, ρ are the density of water, and g is acceleration of gravity；
Step 5: calculating unit volume power consumption under pump shaft power standard condition, the water pump unit volume measured every time is consumed
Electricity is modified, and correction factor is：
In formula (3), ζ is correction factor, POutlet 1Water pump assembly general export pressure, P during to measure for the first timeOutlet 2Measured for second
When water pump assembly general export pressure, hEntrance liquid level 1Water pump assembly main entrance liquid level, h during to measure for the first timeEntrance liquid level 2For second
Water pump assembly main entrance liquid level during measurement,
Water pump mark condition unit volume power consumption e after then correcting2For：
e2=e* ζ (4)
Step 6: the phase rate for measuring revised water pump mark condition unit volume power consumption twice answers≤0.5%, nothing is otherwise measured
Effect, need to increase pendulous frequency until measurement data it is qualified, taken after measurement data is qualified and measure revised water pump mark condition twice
Energy consumption a reference value of the average value of unit volume power consumption as water pump under agreement rotating speed；
Step 7: renovation agent is added to pump shaft bearing using re-manufacturing technology and continuously run more than 30 days, in agreement rotating speed
Lower repeat step three measures the water pump mark condition unit volume power consumption after re-manufacturing technology and is used as energy use check-up to step 6
Value；
Step 8: calculating the fractional energy savings of the water pump after re-manufacturing technology is repaired, the energy consumption a reference value of water pump before repairing is set as ej、
The energy use check-up value of water pump is e after reparationb, then fractional energy savings ξ be：
<mrow>
<mi>&xi;</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>e</mi>
<mi>b</mi>
</msub>
<mo>-</mo>
<msub>
<mi>e</mi>
<mi>j</mi>
</msub>
<mo>)</mo>
</mrow>
<msub>
<mi>e</mi>
<mi>j</mi>
</msub>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>5</mn>
<mo>)</mo>
</mrow>
</mrow>
Be applied the fractional energy savings of water pump after re-manufacturing technology by formula (5).
2. the measuring method according to claim 1 using water pump assembly fractional energy savings after re-manufacturing technology, it is characterised in that：
The measuring accuracy of the voltameter is ± 0.5%.
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| CN105587655B (en) * | 2015-12-29 | 2018-03-09 | 安徽海兴泰瑞智能科技有限公司 | A kind of pumping plant energy consumption analysis management method |
| CN113484057A (en) * | 2021-07-20 | 2021-10-08 | 杭州塞博环境科技有限公司 | Method, equipment and system for calculating and evaluating energy efficiency of water treatment facility |
| CN113901603B (en) * | 2021-09-27 | 2024-05-31 | 国网江苏省电力有限公司营销服务中心 | Method and device for evaluating uncertainty of energy efficiency measurement of water pump unit |
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| GB2260406B (en) * | 1991-10-09 | 1995-02-15 | South West Water Plc | Pump testing |
| JP2003021091A (en) * | 2001-07-03 | 2003-01-24 | Nikkiso Co Ltd | Flow control device of centrifugal pump |
| CN1391059A (en) * | 2002-07-30 | 2003-01-15 | 董伟达 | Technology for reinforcing and self-repairing friction surface of mechanical part |
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