CN106979162B - Pump closed testing bench control system and test method - Google Patents
Pump closed testing bench control system and test method Download PDFInfo
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- CN106979162B CN106979162B CN201710286211.XA CN201710286211A CN106979162B CN 106979162 B CN106979162 B CN 106979162B CN 201710286211 A CN201710286211 A CN 201710286211A CN 106979162 B CN106979162 B CN 106979162B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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Abstract
The invention belongs to parallel water pump technical fields, and in particular to a kind of pump closed testing bench control system and test method；Pump closed testing bench control system of the invention includes test device and control system, and wherein test device includes water tank, drain tank, pumping tank and gas-liquid separator and each connecting line；Control system includes control cabinet and industrial personal computer, is coupled between control cabinet and industrial personal computer by Ethernet and realizes communication；The present invention solves the all-round property testing of present water pump and cavitation test needs manually to test or the poor status of automatic test, whole test process are automatically performed by this TT&C system, institute's measured data can also timely feedback, it is fully automated the test process of water pump, is intelligent, the present invention improves the accuracy of test result not only significantly, and reduce the labor intensity of tester, improve the working environment of tester, testing efficiency is significantly improved, testing cost is reduced.
Description
Technical field
The invention belongs to parallel water pump technical fields, and in particular to a kind of pump closed testing bench control system and test side
Method.
Background technique
Parallel water pump has irreplaceable role for the theoretical research of water pump and the perfect of design.Currently, water pump is surveyed
Trial assembly, which is set mainly, two class of closed circuit experimental rig and open type pond experimental rig.With regard to closed circuit experimental rig in parallel water pump
In application for, presently mainly operated by manually.Manually-operated test (hereinafter referred to as manual testing) exists
Measurement error is big, the more difficult judgement of test macro stability, data are computationally intensive, tester large labor intensity and working environment
The defects of poor.
In order to overcome the technological deficiency of manual testing, for many years, the research staff of parallel water pump technical field is showing always
The Auto-Test System and method (hereinafter referred to as automatic test) of water pump are studied on the basis of some closed circuit experimental rigs,
And achieve some achievements.However, existing automatic test that there are still integration degrees is low, data transmission synchronization difference and
The defects of low measurement accuracy.And these defects also significantly limit automatic test in the application of parallel water pump technical field.
Summary of the invention
It is an object of the invention to overcome, integration degree present in existing automatic test is low, data transmission synchronization
The defects of difference and low measurement accuracy.
In order to achieve the above functions, present invention provide the technical scheme that
A kind of pump closed testing bench control system includes test device and control system, in which:
The test device includes water tank, drain tank, pumping tank and gas-liquid separator, the water tank and pump to be measured
Between be provided with the inlet pipeline on 1 tunnel or more, set gradually on the inlet pipeline along the direction of the inlet pipeline water flow
Electric gate valve, pressure sensor, motor and torque rotary speed sensor, the motor is by Frequency Converter Control；Pump to be measured and the row
The discharge pipe line on 1 tunnel or more is provided between tank out, along the direction of the discharge pipe line water flow on the discharge pipe line according to
Secondary setting electric gate valve and pressure sensor；Pass through flow regulation pipe more than 1 tunnel between the drain tank and the water tank
Road connection sets gradually electric gate valve, stream along the direction of the flow adjustment pipe water flow on the flow regulation pipe road
Meter and pneumatic control valve；The pumping tank is mounted on the top of the water tank, and the pumping tank is equipped with exhaust pipe, institute
State and be provided with pneumatic on-off valve on exhaust pipe and connect with vacuum pump air entry, the gas outlet of the vacuum pump by pipeline with
The gas-liquid separator is connected, and air extraction pipeline is connected on the exhaust pipe, is installed on the air extraction pipeline
There is pneumatic on-off valve；It is also connected by water supply pipe between the vacuum pump and gas-liquid separator, the gas-liquid separator and institute
It states and is connected separately with liquidometer on water tank；Temperature pick-up for testing water temperature in water tank is installed on the water tank
Device；It is respectively arranged on the water tank, the drain tank, the gas-liquid separator and the replenishing line for being evacuated tank pneumatic
Switch valve；
The control system includes control cabinet and industrial personal computer, is joined between the control cabinet and the industrial personal computer by Ethernet
It connects；The control cabinet includes analog data collection card, analog data signal controller, digital signal acquiring card and number letter
Number control card, the control cabinet acquire the pressure sensor, flowmeter, described by the analog data collection card
The data and the frequency converter frequency feedback data that torque rotary speed sensor and the temperature transmitter measure, are transferred to institute
Industrial personal computer processing and feedback are stated, and control signal is exported to the gas in the test device by analog data signal controller
Dynamic regulating valve and frequency converter are to adjust the water flow in flow adjustment pipe and set the revolving speed of frequency converter；The control cabinet passes through
Digital signal acquiring card acquires the status signal of the electric gate valve, the operating state signal of the frequency converter and the liquid level
The liquid level indication signal of meter is transferred to the industrial personal computer processing and feedback, and passes through the Digital Signals card output signal
Control the start and stop of the switch and the frequency converter and the vacuum pump of the electric gate valve and the pneumatic on-off valve.
Preferably, it is additionally provided with manual normally closed switch valve on the inlet pipeline of the test device, it is described normally closed manually to open
Valve is closed between the electric gate valve and the pressure sensor.
Preferably, manual tonifying Qi pipeline is provided on the pumping tank, the manual blowdown pipe road is equipped with manually often
Close switch valve.
Preferably, the test device includes 3 road inlet pipelines, 3 road discharge pipe lines and 6 road flow adjustment pipes, each pipe
The caliber on road is different.
Preferably, the control cabinet is NIcDAQ cabinet.
The present invention also provides a kind of test methods using above-mentioned pump closed testing bench control system, including following step
It is rapid:
(1) pump to be measured is connect with inlet pipeline and discharge pipe line；
(2) test program on opening industrial personal computer, fills in relevant parameter, the model including pump to be measured, and rated speed is specified
Flow, impeller diameter, trial operation pneumatic control valve aperture；
(3) test program is run, initialization test interface, test program is according to the model of pump to be measured, rated speed and leaf
Wheel diameter automatically selects this test used inlet pipeline, discharge pipe line and flow adjustment pipe, and transmits a signal to each
The signal receiver of electric gate valve, then the electric gate valve on the used pipeline of this test automatically opens, this non-test is used
Electric gate valve be automatically closed；Electric gate valve has working condition feedback function, can then find to survey in time by test interface
Choosing whether for test tube road is correct；Meanwhile test program is automatically according to test device level condition, decide whether to carry out fluid infusion and
Tonifying Qi operation；
(4) start pump to be measured, industrial personal computer sends control signals to frequency converter, and the signal includes the amount of starting switch control letter
Number and revolving speed set Analog control signal, frequency converter exports corresponding power according to control signal to drive pump to be measured；
(5) carry out trial operation, artificial contrast's industrial personal computer the parameter value that shows of collected parameter value and field instrument, really
It is normal to protect each sensor signal transmission, after pump operation to be measured is stablized, opens exhaust valve, pipeline is exhausted；
(6) it is tested for the property experiment, the test program on industrial personal computer compares flow target value and flow actual value automatically,
Output control signal, pneumatic control valve automatically adjust aperture according to control signal value size, TT&C system are made to reach target operating condition
State, industrial personal computer record revolving speed, power, inlet pressure, outlet pressure and flow value of the pump to be measured under different operating conditions, and to this
A little data are handled, to judge whether pump to be measured meets design requirement；
(7) after performance test, cavitation experiment is if desired carried out, then vacuum pump is started by industrial personal computer, to true
After sky pump runs well, start cavitation experiment, the test program output control signal on industrial personal computer control pump to be measured flow and
Inlet pressure, pneumatic control valve automatically adjusts aperture according to control signal value size, and inlet pressure is vacuumized by vacuum pump
Mode, test program compares inlet pressure target value and inlet pressure actual value automatically, selection starting pumping tank exhaust pipe
On pneumatic on-off valve or air extraction pipeline on pneumatic on-off valve, adjust flow and inlet pressure and reach goal-selling
After value, after test system to be measured is stablized, revolving speed, power, inlet pressure, outlet pressure and stream of the pump to be measured under different operating conditions are recorded
Magnitude, and these data are handled, to judge whether pump to be measured meets design requirement；
(8) test terminates, and closes pump, vacuum pump and industrial personal computer to be measured.
The beneficial effects of the present invention are: pump closed testing bench control system of the invention and test method solve now
It needs manually to carry out test or the poor status of automatic test in all-round property testing and the cavitation test of water pump, entirely
Portion's test process is automatically performed by this TT&C system, and institute's measured data can also timely feedback, and keeps the test process of water pump fully automated
Change, is intelligent, the present invention improves the accuracy of test result not only significantly, but also the labour for reducing tester is strong
Degree, improves the working environment of tester, significantly improves testing efficiency, reduces testing cost.
Detailed description of the invention
Fig. 1 is TT&C system functional block diagram of the invention；
Fig. 2 is the structural schematic diagram of test device；
Fig. 3 is test flow chart of the invention.
Specific embodiment
1 to attached drawing 3, the present invention is further elaborated with reference to the accompanying drawing:
A kind of pump closed testing bench control system as depicted in figs. 1 and 2, including test device and control system, Fig. 2
For the top view of test device, test device includes water tank 5, drain tank 4, is evacuated tank 6, vacuum pump 2, gas-liquid separator 3, with
And each connecting line, wherein connecting line includes the inlet pipeline for connecting pump 1 and water tank 5 to be measured, 1 rear end of pump to be measured and discharge
The flow adjustment pipe between discharge pipe line and displacement can 4 and water tank 5 between tank 4.
Entire test device one shares three road inlet pipelines, three road discharge pipe lines and six road flow adjustment pipes.Test
When, according to the model specification and the parameter selections such as rated speed and metered flow inlet pipeline all the way of pump 1 to be measured, drainpipe all the way
Road and all the way flow adjustment pipe, inlet pipeline, discharge pipe line, flow adjustment pipe constitute entire test pipeline.Start to be measured
After pump 1, water flow enters pump 1 to be measured and obtains after flowing through inlet pipeline from water tank 5 is discharged into drain tank 4 from discharge pipe line after energy,
Water tank 5 is flowed back to using flow adjustment pipe, to form a closed circuit.
Gas-liquid separator 3 is connect with the outlet of vacuum pump 2, and pumping tank 6 is connected by the import of exhaust pipe and vacuum pump 2
It connects, there is an open osculum on 3 top of gas-liquid separator, during cavitation testing experiment, need to start vacuum pump 2, suction is taken out
Air in gas tank 6, to reduce the inlet pressure of pump 1 to be measured.The gas (containing part water) that vacuum pump 2 aspirates passes through gas-liquid
Separator 3 carries out gas-liquid separation, and gas is discharged to airport by the osculum on 3 top of gas-liquid separator, and liquid portion stays in gas
In liquid/gas separator 3.In addition, having a water supply pipe between gas-liquid separator 3 and vacuum pump 2, to provide working solution to vacuum pump 2.
Each inlet pipeline, discharge pipe line, flow regulation pipe road are connected separately with the electric gate valves 501 of different bores to electric gate valve
512, wherein electric gate valve 501 to electric gate valve 506 is respectively placed in each flow adjustment pipe front end, and electric gate valve 507 is to electronic
Gate valve 509 is respectively placed in each inlet pipeline front end, and electric gate valve 510 to electric gate valve 512 is respectively placed in each discharge pipe line front end.
Corresponding electric gate valve is opened on the pipeline used during test, and the electric gate valve on the non-test pipeline used closes
It closes.Six roads flow adjustment pipe rear end are connected separately with a pneumatic control valve 601 to pneumatic control valve 606, caliber size from
Pneumatic control valve 601 to pneumatic control valve 606 is sequentially increased, and during test, by adjusting pneumatic control valve opening value, then may be used
To obtain different flow rate working conditions points, to measure revolving speed, power, lift, effect of the pump 1 to be measured under different flow operating condition
Rate.Pneumatic on-off valve 701 is placed on the replenishing line of gas-liquid separator 3, and pneumatic on-off valve 702 is placed in the exhaust tube of pumping tank 6
On the road, pneumatic on-off valve 703 is placed on air extraction pipeline, pneumatic on-off valve 704 in pumping tank 6 on replenishing line on, gas
Dynamic switch valve 705 is placed in the blowdown pipe road on pumping tank 6, and pneumatic on-off valve 706 is placed in the exhaust outlet of 1 discharge pipe line of pump to be measured
On.Manual normally closed switch valve 901 to manual normally closed switch valve 903 is placed on the leakage fluid dram of 1 inlet pipeline of pump to be measured, normally closed manually
Switch valve 904 is placed in the manual blowdown pipe road of pumping tank 6, is spare duct, and manual normally closed switch valve 905 is opened with normally closed manually
Valve 906 is closed to be respectively placed in the fluid infusion on water tank 5 and drain tank 4.Flowmeter 101 to flowmeter 106 is six not same amounts
The flowmeter of journey range is respectively placed on six road flow adjustment pipes between electric gate valve and pneumatic control valve, is met different
The measurement request of the flow of the pump to be measured 1 of specifications and models.Pressure sensor 201 to pressure sensor 204 is four different ranges
The pressure sensor of range, wherein pressure sensor 201 is placed on 1 inlet pipeline of pump to be measured, to measure 1 inlet-pressure of pump to be measured
Power, pressure sensor 202 to pressure sensor 204 are respectively placed on three road discharge pipe lines, meet the survey of the different lifts of pump 1 to be measured
Amount requires.Temperature transmitter 301 is connected with water tank 5, the water temperature for measuring system.Torquemeter 401 and torque rotary speed pass
Sensor (not shown) matches, for measuring the revolving speed and power of water pump.Motor 801 to motor 803 is different model
Motor, motor connect using variable frequency starting mode with frequency converter.Test device further includes two liquidometers, wherein liquidometer
LG1 is connect with gas-liquid separator 3, water level and the output of water level high-low signal on real-time display gas-liquid separator 3；Liquid
Position meter LG2 connect with water tank 5 and is placed on pumping tank 6, and function is similar with liquidometer LG1.
In addition, inlet pipeline, the number of discharge pipe line and flow adjustment pipe and caliber can be according in actual use
It needs the model of pump to be measured 1 of different flow to be tested, bore to arrange in pairs or groups, can increase accordingly or reduce to meet test need
It asks.
Control system includes control cabinet and industrial personal computer, and control cabinet using NIcDAQ cabinet and is built in survey in the present embodiment
It tries in cabinet, is coupled between NIcDAQ cabinet and industrial personal computer by Ethernet and realize communication；NIcDAQ cabinet includes analog data
Capture card, analog data signal controller, digital signal acquiring card and digital signal controller, NIcDAQ cabinet pass through simulation
Data that amount data collecting card acquisition pressure sensor, flowmeter, torque rotary speed sensor and temperature transmitter measure and
Frequency converter frequency feedback data is transferred to industrial personal computer processing and feedback, and passes through the output control of analog data signal controller
Signal in test device pneumatic control valve and frequency converter with adjust the water flow in flow adjustment pipe and setting frequency converter
Revolving speed；NIcDAQ cabinet acquires the operating status letter of the status signal of electric gate valve, frequency converter by digital signal acquiring card
Number and liquidometer liquid level indication signal, be transferred to industrial personal computer processing and feedback, and by Digital Signals card output letter
Number control electric gate valve and pneumatic on-off valve switch and frequency converter and vacuum pump start and stop.
Test program based on labview software programming is installed, test program part mainly includes test in industrial personal computer
Interface, test macro status display, the adjusting of test macro operating condition, the storage of test macro judgement of stability, test data.It is logical
The program on modification industrial personal computer is crossed, then the TT&C system of different function can be achieved.
As shown in figure 3, being described below the present invention is based on the test method of above-mentioned TT&C system, the test method is as above-mentioned
The working principle of TT&C system, the steps include:
(1) pump to be measured is connect with inlet pipeline and discharge pipe line；
(2) test program on opening industrial personal computer, fills in relevant parameter, the model including pump to be measured, and rated speed is specified
Flow, impeller diameter, trial operation pneumatic control valve aperture etc.；
(3) test program is run, initialization test interface, test program is according to the model of pump to be measured, rated speed and leaf
Wheel diameter automatically selects this test used inlet pipeline, discharge pipe line and flow adjustment pipe, and transmits a signal to each
The signal receiver of electric gate valve, then the electric gate valve on the used pipeline of this test automatically opens, this non-test is used
Electric gate valve be automatically closed；Electric gate valve has working condition feedback function, can then find to survey in time by test interface
Choosing whether for test tube road is correct；Meanwhile test program is automatically according to test device level condition, decide whether to carry out fluid infusion and
Tonifying Qi operation；
(4) start pump to be measured, industrial personal computer sends control signals to frequency converter, and the signal includes the amount of starting switch control letter
Number and revolving speed set Analog control signal, frequency converter exports corresponding power according to control signal to drive pump to be measured；
(5) carry out trial operation, artificial contrast's industrial personal computer the parameter value that shows of collected parameter value and field instrument, really
It is normal to protect each sensor signal transmission, after pump operation to be measured is stablized, opens exhaust valve, pipeline is exhausted；
(6) it is tested for the property experiment, the test program on industrial personal computer compares flow target value and flow actual value automatically,
Output control signal, pneumatic control valve automatically adjust aperture according to control signal value size, TT&C system are made to reach target operating condition
State records revolving speed, power, inlet pressure, outlet pressure and flow value of the pump to be measured under different operating conditions, and to these data
It is handled, obtains performance test curve, to judge whether pump to be measured meets design requirement；
(7) after performance test, cavitation experiment is if desired carried out, then vacuum pump is started by industrial personal computer, to true
After sky pump runs well, start cavitation experiment, the test program output control signal on industrial personal computer control pump to be measured flow and
Inlet pressure, pneumatic control valve automatically adjust aperture, flow regulative mode and performance test process according to control signal value size
In flow regulative mode it is similar, for inlet pressure in such a way that vacuum pump vacuumizes, test program compares inlet pressure automatically
Target value and inlet pressure actual value, selection starting are evacuated on the pneumatic on-off valve or air extraction pipeline on tank exhaust pipe
After pneumatic on-off valve, adjusting flow and inlet pressure reach predetermined target value, after test system to be measured is stablized, pump to be measured is recorded
Revolving speed, power, inlet pressure, outlet pressure and flow value under different operating conditions, and these data are handled, with judgement
Whether pump to be measured meets design requirement；
(8) test terminates, and closes pump, vacuum pump and industrial personal computer to be measured.
Embodiment described above, only preferred embodiments of the invention, be not to limit practical range of the invention, therefore it is all according to
The equivalent change or modification that structure, feature and principle described in scope of the present invention patent is done, should be included in the present invention
In patent claim.
Claims (6)
1. a kind of pump closed testing bench control system, it is characterised in that: including test device and control system, in which:
The test device includes water tank, drain tank, pumping tank and gas-liquid separator, is set between the water tank and pump to be measured
It is equipped with the inlet pipeline on 1 tunnel or more, is set gradually on the inlet pipeline along the direction of the inlet pipeline water flow electronic
Gate valve, pressure sensor, motor and torque rotary speed sensor, the motor is by Frequency Converter Control；Pump to be measured and the drain tank
Between be provided with the discharge pipe line on 1 tunnel or more, successively set on the discharge pipe line along the direction of the discharge pipe line water flow
Set electric gate valve and pressure sensor；Connected between the drain tank and the water tank by flow adjustment pipe more than 1 tunnel
It connects, sets gradually electric gate valve, flowmeter on the flow regulation pipe road along the direction of the flow adjustment pipe water flow
And pneumatic control valve；The pumping tank is mounted on the top of the water tank, and the pumping tank is equipped with exhaust pipe, the pumping
Be provided with pneumatic on-off valve on air pipe and connect with vacuum pump air entry, the gas outlet of the vacuum pump by pipeline with it is described
Gas-liquid separator is connected, and air extraction pipeline is connected on the exhaust pipe, is equipped with gas on the air extraction pipeline
Dynamic switch valve；It is also connected by water supply pipe between the vacuum pump and gas-liquid separator, the gas-liquid separator and the storage
Liquidometer is connected separately on water pot；Temperature transmitter for testing water temperature in water tank is installed on the water tank；Institute
It states and is respectively arranged with jettron on the replenishing line of water tank, the drain tank, the gas-liquid separator and the pumping tank
Valve；
The control system includes control cabinet and industrial personal computer, is coupled between the control cabinet and the industrial personal computer by Ethernet；
The control cabinet includes analog data collection card, analog data signal controller, digital signal acquiring card and digital signal
Control card, the control cabinet acquire the pressure sensor, the flowmeter, described turn by the analog data collection card
The data and the frequency converter frequency feedback data that square speed probe and the temperature transmitter measure are transferred to described
Industrial personal computer processing and feedback, and control signal is exported to pneumatic in the test device by analog data signal controller
Regulating valve and frequency converter are to adjust the water flow in flow adjustment pipe and set the revolving speed of frequency converter；The control cabinet passes through number
Word data acquisition card acquires the operating state signal and the liquidometer of the status signal of the electric gate valve, the frequency converter
Liquid level indication signal, be transferred to industrial personal computer processing and feedback, and pass through the Digital Signals card output signal control
Make the start and stop of the switch and the frequency converter and the vacuum pump of the electric gate valve and the pneumatic on-off valve.
2. pump closed testing bench control system as described in claim 1, it is characterised in that: the water inlet pipe of the test device
Road is additionally provided with manual normally closed switch valve, and the manual normally closed switch valve is located at the electric gate valve and the pressure sensor
Between.
3. pump closed testing bench control system as described in claim 1, it is characterised in that: be provided with hand on the pumping tank
Dynamic tonifying Qi pipeline, the manual blowdown pipe road are equipped with manual normally closed switch valve.
4. pump closed testing bench control system as described in claim 1, it is characterised in that: the test device includes 3 tunnels
The caliber of inlet pipeline, 3 road discharge pipe lines and 6 road flow adjustment pipes, each pipeline is different.
5. the pump closed testing bench control system as described in Claims 1-4 any one, it is characterised in that: the control
Case is NIcDAQ cabinet.
6. a kind of test method using pump closed testing bench control system described in Claims 1 to 4 any one, special
Sign is: the following steps are included:
(1) pump to be measured is connect with inlet pipeline and discharge pipe line；
(2) test program on industrial personal computer is opened, relevant parameter is filled in, the model including pump to be measured, rated speed, specified stream
Amount, impeller diameter, trial operation pneumatic control valve aperture；
(3) test program is run, initialization test interface, for test program according to the model of pump to be measured, rated speed and impeller are straight
Diameter automatically selects this test used inlet pipeline, discharge pipe line and flow adjustment pipe, and transmits a signal to each electronic
The signal receiver of gate valve, then the electric gate valve on the used pipeline of this test automatically opens, the electricity of this non-test
Dynamic gate valve is automatically closed；Electric gate valve has working condition feedback function, can then find testing tube in time by test interface
Choosing whether for road is correct；Meanwhile test program decides whether to carry out fluid infusion and tonifying Qi automatically according to test device level condition
Operation；
(4) start pump to be measured, industrial personal computer sends control signals to frequency converter, the signal include the amount of starting switch control signal and
Revolving speed sets Analog control signal, and frequency converter exports corresponding power according to control signal to drive pump to be measured；
(5) trial operation, the parameter value that shows of artificial contrast's industrial personal computer institute collected parameter value and field instrument, it is ensured that respectively are carried out
Sensor signal transmission is normal, after pump operation to be measured is stablized, opens exhaust valve, pipeline is exhausted；
(6) it is tested for the property experiment, the test program on industrial personal computer compares flow target value and flow actual value automatically, output
Signal is controlled, pneumatic control valve automatically adjusts aperture according to control signal value size, TT&C system is made to reach target operating condition state,
Industrial personal computer records revolving speed, power, inlet pressure, outlet pressure and flow value of the pump to be measured under different operating conditions, and to these numbers
According to being handled, to judge whether the comprehensive performance of pump to be measured meets design requirement；
(7) after performance test, cavitation experiment is if desired carried out, then vacuum pump is started by industrial personal computer, to vacuum pump
After normal operation, start cavitation experiment, the test program output control signal on industrial personal computer controls flow and the import of pump to be measured
Pressure, pneumatic control valve automatically adjust aperture, and the side that inlet pressure is vacuumized by vacuum pump according to control signal value size
Formula, test program compare inlet pressure target value and inlet pressure actual value automatically, and selection starting is evacuated on tank exhaust pipe
Pneumatic on-off valve on pneumatic on-off valve or air extraction pipeline, adjusts flow and inlet pressure reaches predetermined target value
Afterwards, after test system to be measured is stablized, revolving speed, power, inlet pressure, outlet pressure and flow of the pump to be measured under different operating conditions are recorded
Value, and these data are handled, to judge whether pump to be measured meets design requirement；
(8) test terminates, and closes pump, vacuum pump and industrial personal computer to be measured.
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| CN201710286211.XA CN106979162B (en) | 2017-04-26 | 2017-04-26 | Pump closed testing bench control system and test method |
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| CN201710286211.XA CN106979162B (en) | 2017-04-26 | 2017-04-26 | Pump closed testing bench control system and test method |
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| CN206801901U (en) * | 2017-04-26 | 2017-12-26 | 广东肯富来泵业股份有限公司 | Pump closed testing bench control system |
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| JP2001271761A (en) * | 2001-02-13 | 2001-10-05 | Kichinosuke Yamamoto | Pump effective power deciding method and pump effective power testing method |
| US7637723B2 (en) * | 2005-07-25 | 2009-12-29 | Emerson Electric Co | Cavitation detection device and method |
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| CN102635559A (en) * | 2012-04-10 | 2012-08-15 | 山东省农业机械科学研究所 | Closed pipeline device of pump test system |
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| CN106368960A (en) * | 2016-10-27 | 2017-02-01 | 广东肯富来泵业股份有限公司 | Device and method for detecting critical cavitation point of centrifugal pump |
| CN206801901U (en) * | 2017-04-26 | 2017-12-26 | 广东肯富来泵业股份有限公司 | Pump closed testing bench control system |
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