CN107643484B - Frequency conversion type self priming pump electric efficiency test method - Google Patents
Frequency conversion type self priming pump electric efficiency test method Download PDFInfo
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- CN107643484B CN107643484B CN201611087147.4A CN201611087147A CN107643484B CN 107643484 B CN107643484 B CN 107643484B CN 201611087147 A CN201611087147 A CN 201611087147A CN 107643484 B CN107643484 B CN 107643484B
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Abstract
The present invention relates to a kind of frequency conversion type self priming pump electric efficiency test method, mainly solve the problems, such as to there is no frequency conversion type self priming pump electric efficiency test method in the prior art.For the present invention by using a kind of frequency conversion type self priming pump electric efficiency test method, test equipment mainly includes frequency conversion type self-priming pump motor, load variable-frequency motor, torque sensor, speed probe, temperature sensor, control panel, display；It preferably solves the above problem by the technical solution that the input power that the active power and power supply of test frequency conversion type self-priming pump motor output provide calculates the frequency conversion type self priming pump motor operation efficiency under different operation power, can be used in the test of frequency conversion type self priming pump electric efficiency.
Description
Technical field
The present invention relates to a kind of frequency conversion type self priming pump electric efficiency test methods.
Background technique
The equipment that self priming pump is generally used as gas station, main function be oil product is pumped out from buried oil tank by
Flowmeter and refueling nozzle are filled into automotive oil tank.Self-priming pump motor generally uses industrial frequency AC asynchronous machine, when operator will
When refueling nozzle is removed from fuel charger, motor receives fueling signal and starts to start, and motor moment reaches maximum (top) speed and maintains
Current rotating speed is until refueling terminates.In practical refueling process, the refueling nozzle high speed fuel-displaced time only accounts for the fuel charger starting time
2/3rds, when oil product is not filled into the fuel tank of vehicle, the oil product pumped out is all flowed back by overflow ducts, and motor is transported at full speed
Row wastes a large amount of electric energy, increases gas station's grid electricity fee cost.Lee's row et al. analyzes gas station's self priming pump operating condition, self-priming
Pump motor drives dynamic operation of oil pump by belt pulley in the fueling signal starting motor that fuel charger master control borad receives oil gun, in oil
The oil inlet of pump generates negative pressure, enters the oil pressure of oil tank in pump by atmospheric pressure, and oil enters rotor chamber by oily filter in pumping.By
After the oil of rotor chamber is by depression formation high pressure, enter gs-oil separator from pump oil discharge outlet, oil gas and oily mixture are in separator
It is interior through being sufficiently separated, gas returns in pump from the row of exhausting-gas hole National People's Congress gas on top, oil liquid.Frequency conversion type self-priming pump motor uses frequency conversion
Motor power (output) is adjusted in technology, mentions motor low-speed running when oil product after rifle does not fill, it is fuel-displaced after motor run at high speed it is full
Self priming pump electric energy expense is effectively reduced in sufficient fueling operation demand.Currently, self priming pump electric efficiency test method is primarily directed to work
Frequency AC asynchronous motor tests motor operation efficiency under fixed rotating speed.Currently, not providing test frequency conversion type in national standard certainly
The method of sucking pump electric efficiency, therefore can not determine whether frequency conversion type self-priming pump motor actual operating efficiency is in high efficiency range.
In view of the above circumstances, it needs to be determined frequency conversion type self priming pump motor operation efficiency, to ensure that frequency conversion type self-priming pump motor is high
Effect operation.
Summary of the invention
The technical problem to be solved by the present invention is to there is no frequency conversion type self priming pump electric efficiency test method in the prior art
The problem of, a kind of new frequency conversion type self priming pump electric efficiency test method is provided.This method is able to carry out frequency conversion type self priming pump electricity
The test of engine efficiency.
To solve the above problems, The technical solution adopted by the invention is as follows: a kind of frequency conversion type self priming pump electric efficiency is tested
Method, test equipment mainly include frequency conversion type self-priming pump motor, load motor, torque sensor, speed probe, temperature sensing
Device, control panel, display；Frequency conversion type self-priming pump motor (1) and load motor (5) are fixed on testboard (10) using fixing bolt
On, frequency conversion type self-priming pump motor (1) carries out power transmission by transmission shaft (3), and load motor (5) passes through rotational speed difference to frequency conversion type
Self-priming pump motor (1) provides load, and frequency conversion type self-priming pump motor (1) and load motor (5) are passed through circular joint using the rope made of hemp
(4) it links together；Temperature sensor (2) measures motor housing temperature, and torque sensor (6) measures motor output torque, turns
Fast sensor (7) measures motor speed, and the parameter of electric machine is transmitted to controller (8) and carries out real-time display by display screen (9)；It is logical
The input power that the active power and power supply for crossing test frequency conversion type self-priming pump motor output provide calculates under different operation power
Frequency conversion type self priming pump motor operation efficiency；Test includes the following steps:
(a) after the power supply of frequency conversion type self-priming pump motor, motor low-speed running preheating, temperature sensor (2) measures motor (1) outside
Shell temperature, temperature carry out follow-up test in the case where not sharply increasing, and otherwise replace motor and test again；
(b) frequency conversion type self-priming pump motor (1) low running rates are stablized after current value, starting load motor (5), in order to
Load is provided to tested motor, reducing load motor (5) revolving speed makes it form rotational speed difference with tested motor, speed difference is controlled, to
Tested motor (1) provides 0.2 times of load, and torque sensor (6), which is tested out, loads lower output torque, revolving speed to 0.2 times of measured motor
Motor speed to be measured, display screen (9) show current motor revolving speed, output torque and the electricity of power supply at this time for sensor (7) measurement
Stream, voltage and instantaneous power factor, active power are torque/9500 revolving speed *, the input work of frequency conversion type self-priming pump motor (1)
Rate be electric current, voltage, power factor (PF) three product, the operational efficiency of present load down coversion type self-priming pump motor is wattful power
The ratio of rate and input power；
(c) it maintains to reduce load motor (5) revolving speed again to measured motor current rotating speed and increase its revolving speed with tested motor
Difference increases by 0.2 times of load to tested motor, measures the operational efficiency of this load down coversion type self-priming pump motor (1)；
(d) step (c) is repeated until motor load reaches 1.2 times of loads, display screen (9) can show lower 0.2 times of the slow-speed of revolution
It is loaded to the efficiency curve of 1.2 times of loads, is obtained under 1.0 times of load down coversion type self-priming pump motor slow-speed of revolution using trace-point method
Operational efficiency；
(e) it improves motor speed to rise under high revolving speed, repeat step (b)；
(f) step (c) is repeated until motor load reaches 1.2 times of loads, high lower 0.2 times of revolving speed of display screen (9) display negative
It is loaded onto the efficiency curve of 1.2 times of loads, obtains the fortune under 1.0 times of load high revolving speeds of down coversion type self-priming pump motor using trace-point method
Line efficiency.
In above-mentioned technical proposal, it is preferable that under frequency conversion type self-priming pump motor current rotating speed, 0.2 times, 0.4 times, 0.6 times,
0.8 times, 1.0 times, the lower measurement motor operation efficiency of 1.2 times of loads.
Frequency conversion type self-priming pump motor solves conventional AC asynchronous motor, and there is only start and shut down asking for two states
Topic realizes that motor low-speed running when operator mentions rifle, normal fueling operation run at high speed.In the same use condition in gas station
Under, frequency conversion type self-priming pump motor saves electric energy up to 30% or more, significantly reduces and add compared with conventional AC asynchronous motor
Petrol station power consumption.
The present invention provides a kind of frequency conversion type self priming pump electric efficiency test methods, export for frequency conversion type self-priming pump motor
The working characteristics of power variable, the test method can effectively measure reality of the frequency conversion type self priming pump electricity under different output power
Operational efficiency.The frequency conversion type self priming pump electric efficiency test method can be defeated according to the actual situation for frequency conversion type self-priming pump motor
The characteristic of mesh power out measures operational efficiency of the frequency conversion type self priming pump under low-power operating condition in the case where volume read-out is small,
Operational efficiency of the frequency conversion type self priming pump under high power operating condition is measured in the case where volume read-out is big, it can be in different output power
Under determine frequency conversion type self-priming pump motor output active power and power supply provide input power, may be implemented to different operations
The frequency conversion type self priming pump of power carries out efficiency test, obtains the frequency conversion type self priming pump motor operation efficiency under different output power,
Data support, which is provided, for frequency conversion type self priming pump operation and maintenance achieves preferable technical effect.
Detailed description of the invention
Fig. 1 is the flow diagram of the method for the invention.
In Fig. 1,1- frequency conversion type self-priming pump motor；2 temperature sensors；3- transmission shaft；4- circular joint；5- load motor；
6- torque sensor；7- speed probe；8- controller；9- display screen；10- testboard.
The present invention will be further described below by way of examples, but is not limited only to the present embodiment.
Specific embodiment
[embodiment 1]
A kind of frequency conversion type self priming pump electric efficiency test method, as shown in Figure 1, main pass through test frequency conversion type self priming pump electricity
The input power that the active power and power supply of machine output provide calculates the frequency conversion type self-priming pump motor fortune under different operation power
Line efficiency.Frequency conversion type self-priming pump motor (1) and load motor (5) are fixed on testboard (10) using fixing bolt, frequency conversion type
Self-priming pump motor (1) carries out power transmission by transmission shaft (3), and load motor (5) is electric to frequency conversion type self priming pump by rotational speed difference
Machine (1) provides load, is connected to frequency conversion type self-priming pump motor (1) and load motor (5) by circular joint (4) using the rope made of hemp
Together.Temperature sensor (2) measures motor housing temperature, and torque sensor (6) measures motor output torque, speed probe
(7) motor speed is measured, the parameter of electric machine is transmitted to controller (8) and carries out real-time display by display screen (9).
Include the following steps:
(a) after the power supply of frequency conversion type self-priming pump motor, motor low-speed running is preheated ten minutes, temperature sensor (2) measurement electricity
Machine (1) skin temperature, temperature carry out follow-up test in the case where not sharply increasing, and otherwise replace motor and test again.
(b) frequency conversion type self-priming pump motor (1) low running rates are stablized after current value, starting load motor (5), in order to
Load is provided to tested motor, reducing load motor (5) revolving speed makes itself and tested motor form rotational speed difference, and control speed difference can be to
Tested motor (1) provides 0.2 times of load, and torque sensor (6), which is tested out, loads lower output torque, revolving speed to 0.2 times of measured motor
Motor speed to be measured, display screen (9) can show current motor revolving speed, output torque and power supply at this time for sensor (7) measurement
Electric current, voltage and instantaneous power factor, active power are torque/9500 revolving speed *, the input of frequency conversion type self-priming pump motor (1)
Power be electric current, voltage, power factor (PF) three product, the operational efficiency of present load down coversion type self-priming pump motor is active
The ratio of power and input power.
(c) it maintains to reduce load motor (5) revolving speed again to measured motor current rotating speed and increase its revolving speed with tested motor
Difference increases by 0.2 times of load (loading at this time for 0.4 times) to tested motor, measures this load down coversion type self-priming pump motor (1)
Operational efficiency.
(d) step (c) is repeated until motor load reaches 1.2 times of loads, display screen (9) can show lower 0.2 times of the slow-speed of revolution
It is loaded to the efficiency curve of 1.2 times of loads, is obtained under 1.0 times of load down coversion type self-priming pump motor slow-speed of revolution using trace-point method
Operational efficiency.
(e) it improves motor speed to rise under high revolving speed, repeat step (b).
(f) step (c) is repeated until motor load reaches 1.2 times of loads, display screen (9) can show lower 0.2 times of high revolving speed
It is loaded to the efficiency curve of 1.2 times of loads, is obtained under 1.0 times of high revolving speeds of load down coversion type self-priming pump motor using trace-point method
Operational efficiency.
The method that test frequency conversion type self priming pump electric efficiency is not provided in national standard is only directed to conventional AC asynchronous machine
In the case where the test method motor operation efficiency of declared working condition operational efficiency changes, load motor can not be provided accordingly
Load capacity, the operational efficiency being unable to measure under frequency conversion type self-priming pump motor difference operating condition, therefore can not determine frequency conversion type self-priming
Whether pump motor actual operating efficiency is in high efficiency range.Frequency conversion type self priming pump electric efficiency test method can be directed to variable-frequency electric
Operating condition driving load motor under machine different capacity provides corresponding load capacity, and simulated frequency conversion motor actual operating mode is surveyed
Different operation power down coversion type self priming pump motor operation efficiency are measured, are conducive to the runnability for fully understanding self priming pump, really
Protect frequency conversion type self priming pump efficient operation.
Claims (2)
1. a kind of frequency conversion type self priming pump electric efficiency test method, test equipment mainly includes frequency conversion type self-priming pump motor, load
Motor, torque sensor, speed probe, temperature sensor, control panel, display；Frequency conversion type self-priming pump motor (1) and load
Motor (5) is fixed on testboard (10) using fixing bolt, and frequency conversion type self-priming pump motor (1) carries out function by transmission shaft (3)
Rate transmission, load motor (5) by rotational speed difference to frequency conversion type self-priming pump motor (1) provide load, using the rope made of hemp by frequency conversion type from
Sucking pump motor (1) and load motor (5) are linked together by circular joint (4)；Temperature sensor (2) measures motor housing temperature
Degree, torque sensor (6) measure motor output torque, and speed probe (7) measures motor speed, and the parameter of electric machine is transmitted to control
Device (8) simultaneously carries out real-time display by display screen (9)；Pass through the active power and power supply of test frequency conversion type self-priming pump motor output
The input power of offer calculates the frequency conversion type self priming pump motor operation efficiency under different operation power；Test includes following step
It is rapid:
(a) after the power supply of frequency conversion type self-priming pump motor, motor low-speed running preheating, temperature sensor (2) measures motor (1) shell temperature
Degree, temperature carry out follow-up test in the case where not sharply increasing, and otherwise replace motor and test again；
(b) frequency conversion type self-priming pump motor (1) low running rates are stablized after current value, starting load motor (5), in order to quilt
Measured motor provides load, and reducing load motor (5) revolving speed makes itself and tested motor form rotational speed difference, controls speed difference, to tested
Motor (1) provides 0.2 times of load, and torque sensor (6), which is tested out, loads lower output torque, revolution speed sensing to 0.2 times of measured motor
Motor speed to be measured, display screen (9) show electric current, the electricity of current motor revolving speed, output torque and power supply at this time for device (7) measurement
Pressure and instantaneous power factor, active power are torque/9500 revolving speed *, and the input power of frequency conversion type self-priming pump motor (1) is electricity
Stream, voltage, power factor (PF) three product, the operational efficiency of present load down coversion type self-priming pump motor be active power with it is defeated
Enter the ratio of power；
(c) it maintains to reduce load motor (5) revolving speed again to measured motor current rotating speed and increase its rotational speed difference with tested motor,
Increase by 0.2 times of load to tested motor, measures the operational efficiency of this load down coversion type self-priming pump motor (1)；
(d) step (c) is repeated until motor load reaches 1.2 times of loads, display screen (9) can show the lower 0.2 times of load of the slow-speed of revolution
The efficiency curve loaded to 1.2 times obtains the operation under 1.0 times of load down coversion type self-priming pump motor slow-speed of revolution using trace-point method
Efficiency；
(e) it improves motor speed to rise under high revolving speed, repeat step (b)；
(f) step (c) is repeated until motor load reaches 1.2 times of loads, display screen (9) shows high lower 0.2 times of revolving speed and is loaded to
The efficiency curve of 1.2 times of loads obtains the operation under 1.0 times of load high revolving speeds of down coversion type self-priming pump motor using trace-point method and imitates
Rate.
2. frequency conversion type self priming pump electric efficiency test method according to claim 1, it is characterised in that frequency conversion type self priming pump electricity
Under machine current rotating speed, motor operation efficiency is measured under 0.2 times, 0.4 times, 0.6 times, 0.8 times, 1.0 times, 1.2 times of loads.
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| CN109630422B (en) * | 2018-11-24 | 2020-05-19 | 江苏中电泵阀制造有限公司 | Control circuit of self-priming pump water testing machine |
| CN112110407B (en) * | 2019-06-19 | 2022-06-28 | 中国石油化工股份有限公司 | Double-frequency-conversion oil gas recovery gas-liquid ratio adjusting device and method |
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| JP3201163B2 (en) * | 1994-09-01 | 2001-08-20 | トヨタ自動車株式会社 | Motor evaluation method |
| US20040017118A1 (en) * | 2002-07-23 | 2004-01-29 | Yehia El-Ibiary | System and method for estimating electric motor operating parameters |
| CN202339399U (en) * | 2011-11-07 | 2012-07-18 | 重庆明宝科技发展有限公司 | Motor testing system |
| CN104422885A (en) * | 2013-09-10 | 2015-03-18 | 冉骏 | Real-time online motor testing system |
| CN104950257B (en) * | 2015-06-29 | 2017-07-14 | 吉林大学 | Open winding permanent magnet synchronous motor test system and method for testing |
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