CN106979162A - Pump closed testing bench control system and method for testing - Google Patents
Pump closed testing bench control system and method for testing Download PDFInfo
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- CN106979162A CN106979162A CN201710286211.XA CN201710286211A CN106979162A CN 106979162 A CN106979162 A CN 106979162A CN 201710286211 A CN201710286211 A CN 201710286211A CN 106979162 A CN106979162 A CN 106979162A
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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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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention belongs to parallel water pump technical field, and in particular to a kind of pump closed testing bench control system and method for testing；The pump closed testing bench control system of the present 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 computer, and communication is realized by Ethernet connection between control cabinet and industrial computer；The present invention, which solves the all-round property testing of present water pump and cavitation test, to be needed manually to be tested or the poor present situation of automatic test, whole test process are automatically performed by this TT＆C system, surveyed data can also be fed back in time, make test process full automation, the intellectuality of water pump, the present invention not only considerably improves the accuracy of test result, 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 field, and in particular to a kind of pump closed testing bench control system and test side
Method.
Background technology
Parallel water pump plays the role of irreplaceable for the theoretical research of water pump and the perfect of design.At present, water pump is surveyed
Trial assembly, which is put mainly, closed circuit experimental rig and the class of open type pond experimental rig two.With regard to closed circuit experimental rig in parallel water pump
In application for, be presently mainly to be operated by manually.Manually-operated test (hereinafter referred to as manual testing) is present
Measurement error is big, test system stability it is more difficult judge, data are computationally intensive, tester labor intensity big and working environment
The defects such as difference.
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 is still suffered from, integration degree is low, data transmission synchronization difference and
The more low defect of measurement accuracy.And these defects also significantly limit application of the automatic test in parallel water pump technical field.
The content of the invention
It is an object of the invention to overcome, the integration degree present in existing automatic test is low, data transmission synchronization
Difference and the more low defect of measurement accuracy.
To reach above-mentioned functions, the technical scheme that the present invention is provided is：
A kind of pump closed testing bench control system includes test device and control system, wherein：
The test device includes water tank, drain tank, pumping tank and gas-liquid separator, the water tank and pump to be measured it
Between be provided with more than 1 tunnel inlet pipeline, set gradually along the direction of the inlet pipeline current on the inlet pipeline
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
Go out between tank the discharge pipe line being provided with more than 1 tunnel, along the direction of the discharge pipe line current 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 is connected, and electric gate valve, stream are set gradually on the flow adjustment pipe along the direction of the flow adjustment pipe current
Gauge and pneumatic control valve；The pumping tank is arranged on the napex of the water tank, and the pumping tank is provided with exhaust pipe, institute
State and pneumatic on-off valve be provided with exhaust pipe and is connected with vavuum pump air entry, the gas outlet of the vavuum pump by pipeline with
The gas-liquid separator is connected, and is connected with air extraction pipeline, the air extraction pipeline and installs on the exhaust pipe
There is pneumatic on-off valve；Also connected between the vavuum pump and gas-liquid separator by supply channel, the gas-liquid separator and institute
State and liquid level gauge is connected on water tank；Temperature pick-up for testing water temperature in water tank is installed on the water tank
Device；The water tank, the drain tank, be respectively arranged with the replenishing line of the gas-liquid separator and the pumping tank it is pneumatic
Switch valve；
The control system includes control cabinet and industrial computer, is joined between the control cabinet and the industrial computer by Ethernet
Connect；The control cabinet includes analog data collection card, analog data signal controller, digital signal acquiring card and numeral letter
Number control card, the control cabinet gathers the pressure sensor by the analog data collection card, the flowmeter, described
Data and the frequency converter frequency feedback data that torque rotary speed sensor and the temperature transmitter are measured, are transferred to institute
State industrial computer processing and feed back, and the gas given by analog data signal controller output control signal in the test device
The rotating speed of dynamic regulating valve and frequency converter to adjust the water-carrying capacity in flow adjustment pipe and set frequency converter；The control cabinet passes through
Digital signal acquiring card gathers status signal, the operating state signal of the frequency converter and the liquid level of the electric gate valve
The liquid level indication signal of meter, is transferred to the industrial computer processing and feeds back, and pass through the Digital Signals card output signal
Control the start and stop of the switch and the frequency converter and the vavuum 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 to be located between the electric gate valve and the pressure sensor.
Preferably, it is described pumping tank on be provided with described in manual tonifying Qi pipeline be provided with manual tonifying Qi pipeline manually it is normally closed
Switch valve.
Preferably, the test device includes caliber different 3 road inlet pipelines, 3 road discharge pipe lines and 6 tunnel Flow-rate adjustments
Pipeline.
Preferably, the control cabinet is NIcDAQ cabinets.
Present invention also offers a kind of method of testing using above-mentioned pump closed testing bench control system, including following step
Suddenly：
(1) pump to be measured is connected with inlet pipeline and discharge pipe line；
(2) test program on industrial computer is opened, relevant parameter is filled in, includes the model of pump to be measured, rated speed is specified
Flow, impeller diameter, trial operation pneumatic control valve aperture；
(3) testing results program, initialization test interface, test program is according to the model of pump to be measured, rated speed and leaf
Wheel diameter, automatically selects this experiment used inlet pipeline, discharge pipe line and flow adjustment pipe, and transmit a signal to each
The signal receiver of electric gate valve, then electric gate valve on the used pipeline of this experiment automatically open up, this non-experiment is used
Electric gate valve close automatically；Electric gate valve carries 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 automatically according to test device level condition, decide whether carry out fluid infusion and
Tonifying Qi is operated；
(4) pump to be measured is started, industrial computer sends control signals to frequency converter, and the signal includes starting switch amount and controls letter
Number and speed setting Analog control signal, frequency converter exports corresponding power to drive pump to be measured according to control signal；
(5) progress trial operation, the parameter value that the parameter value and field instrument that artificial contrast's industrial computer is collected are shown, really
Protect each sensor signal transmission normal, after pump operation to be measured is stable, opens air bleeding valve, pipeline is exhausted；
(6) test program carried out on performance test experiments, industrial computer contrasts flow target value and flow actual value automatically,
Output control signal, pneumatic control valve automatically adjusts aperture according to control signal value size, TT＆C system is reached target operating condition
State, industrial computer records rotating speed, power, inlet pressure, outlet pressure and flow value of the pump to be measured under different operating modes, and to this
A little data are handled, to judge whether pump to be measured meets design requirement；
(7) after performance test terminates, cavitation experiment is if desired carried out, then vavuum pump is started by industrial computer, treats true
After empty pump runs well, start the test program output control signal on cavitation experiment, industrial 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 vavuum pump
Mode, test program contrasts inlet pressure desired value and inlet pressure actual value automatically, and selection starts pumping tank exhaust pipe
On pneumatic on-off valve or the pneumatic on-off valve on air extraction pipeline, regulation flow and inlet pressure reach goal-selling
After value, after test system to be measured is stable, rotating speed, power, inlet pressure, outlet pressure and stream of the pump to be measured under different operating modes are recorded
Value, and these data are handled, to judge whether pump to be measured meets design requirement；
(8) test knot speed, closes pump to be measured, vavuum pump and industrial computer.
The beneficial effects of the present invention are：The pump closed testing bench control system and method for testing of the present invention solves existing
Need manually to be tested or the poor present situation 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 surveying data can also feed back in time, make the test process of water pump fully automated
Change, intellectuality, the present invention not only considerably improves the accuracy of test result, and it is strong to reduce the work of tester
Degree, improves the working environment of tester, significantly improves testing efficiency, reduces testing cost.
Brief description of the drawings
Fig. 1 is TT＆C system theory diagram of the invention；
Fig. 2 is the structural representation of test device；
Fig. 3 is test flow chart of the invention.
Embodiment
1 to accompanying drawing 3, the present invention is further elaborated below in conjunction with the accompanying drawings：
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, pumping tank 6, vavuum pump 2, gas-liquid separator 3, with
And each connecting line, wherein connecting line includes the inlet pipeline for connecting pump 1 to be measured and water tank 5, the rear end of pump 1 to be measured and discharge
Flow adjustment pipe between discharge pipe line between tank 4, and displacement can 4 and water tank 5.
Whole test device one has three road inlet pipelines, three road discharge pipe lines, and six road flow adjustment pipes.Experiment
When, inlet pipeline all the way is selected according to parameters such as the model specifications and rated speed and metered flow of pump 1 to be measured, all the way drainpipe
Road and all the way flow adjustment pipe, inlet pipeline, discharge pipe line, flow adjustment pipe constitute whole experiment pipeline.Start to be measured
After pump 1, current flow through to obtain after energy into pump 1 to be measured after inlet pipeline from water tank 5 is discharged into drain tank 4 from discharge pipe line,
Water tank 5 is flowed back to by flow adjustment pipe again, so as to form a closed circuit.
Gas-liquid separator 3 is connected with the outlet of vavuum pump 2, and pumping tank 6 is connected by the import of exhaust pipe and vavuum pump 2
Connect, the top of gas-liquid separator 3 has a unlimited osculum, during cavitation testing experiment, need to start vavuum pump 2, suction is taken out
Air in gas tank 6, so as to reduce the inlet pressure of pump 1 to be measured.The gas (containing part water) that vavuum pump 2 is aspirated passes through gas-liquid
Separator 3 carries out gas-liquid separation, and gas is discharged to airport by the osculum on the top of gas-liquid separator 3, and liquid portion stays in gas
In liquid/gas separator 3.In addition, having a supply channel between gas-liquid separator 3 and vavuum pump 2, to provide working solution to vavuum pump 2.
Each inlet pipeline, discharge pipe line, the electric gate valves 501 of different bores is connected on flow adjustment pipe 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 in process of the test, and the electric gate valve on the non-test pipeline used is closed
Close.Six roads flow adjustment pipe rear end are connected to a pneumatic control valve 601 to pneumatic control valve 606, its caliber size from
Pneumatic control valve 601 to pneumatic control valve 606 increases successively, in process of the test, by adjusting pneumatic control valve opening value, then may be used
To obtain different flow rate working conditions points, so as to measure rotating speed of the pump 1 to be measured under different flow operating mode, power, lift, effect
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
Lu Shang, 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 on the tonifying Qi pipeline on pumping tank 6, and pneumatic on-off valve 706 is placed in the exhaust outlet of the discharge pipe line of pump 1 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 the inlet pipeline of pump 1 to be measured, normally closed manually
Switch valve 904 is placed on the manual tonifying Qi pipeline 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 scope, is respectively placed on six road flow adjustment pipes between electric gate valve and pneumatic control valve, meets 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 scope, wherein pressure sensor 201 are placed on the inlet pipeline of pump 1 to be measured, to measure the inlet-pressure of pump 1 to be measured
Power, pressure sensor 202 to pressure sensor 204 is respectively placed on three road discharge pipe lines, meets the survey of the different lifts of pump 1 to be measured
Amount is required.Temperature transmitter 301 is connected with water tank 5, the water temperature for measuring system.Torquemeter 401 and torque rotary speed are passed
Sensor (not shown) is supported the use, rotating speed and power for measuring water pump.Motor 801 to motor 803 is different model
Motor, motor is connected with frequency converter using variable frequency starting mode.Test device also includes two liquid level gauges, wherein liquid level gauge
LG1 is connected with gas-liquid separator 3, for showing the water level on gas-liquid separator 3, and the output of water level high-low signal in real time；Liquid
Position meter LG2 is connected with water tank 5 and is positioned on pumping tank 6, and function is similar with liquid level gauge LG1.
In addition, the way and caliber of inlet pipeline, discharge pipe line and flow adjustment pipe can be according in actual use
Need the different flow of test, the model of the pump to be measured 1 of bore to be arranged in pairs or groups, can accordingly increase or decrease to meet test need
Ask.
Control system includes control cabinet and industrial computer, and control cabinet is using NIcDAQ cabinets in the present embodiment and is built in survey
Try in cabinet, communication is realized by Ethernet connection between NIcDAQ cabinets and industrial computer；NIcDAQ cabinets include analog data
Capture card, analog data signal controller, digital signal acquiring card and digital signal controller, NIcDAQ cabinets pass through simulation
Data that amount data collecting card collection pressure sensor, flowmeter, torque rotary speed sensor and temperature transmitter are measured and
Frequency converter frequency feedback data, is transferred to industrial computer processing and feeds back, and pass through analog data signal controller output control
Signal to the pneumatic control valve and frequency converter in test device with adjust the water-carrying capacity in flow adjustment pipe and setting frequency converter
Rotating speed；NIcDAQ cabinets gather the status signal of electric gate valve by digital signal acquiring card, the running status of frequency converter is believed
Number and liquid level gauge liquid level indication signal, be transferred to industrial computer processing and feed back, and pass through Digital Signals card output letter
Number control electric gate valve and pneumatic on-off valve switch and frequency converter and the start and stop of vavuum pump.
Test program based on labview software programmings is installed, test program part mainly includes test in industrial computer
Interface, test system status display, test system regulating working conditions, test system judgement of stability, test data storage.It is logical
The program crossed on modification industrial computer, then can be achieved the TT＆C system of difference in functionality.
As shown in figure 3, the following description method of testing of the invention based on above-mentioned TT＆C system, the method for testing is as above-mentioned
The operation principle of TT＆C system, its step is：
(1) pump to be measured is connected with inlet pipeline and discharge pipe line；
(2) test program on industrial computer is opened, relevant parameter is filled in, includes the model of pump to be measured, rated speed is specified
Flow, impeller diameter, trial operation pneumatic control valve aperture etc.；
(3) testing results program, initialization test interface, test program is according to the model of pump to be measured, rated speed and leaf
Wheel diameter, automatically selects this experiment used inlet pipeline, discharge pipe line and flow adjustment pipe, and transmit a signal to each
The signal receiver of electric gate valve, then electric gate valve on the used pipeline of this experiment automatically open up, this non-experiment is used
Electric gate valve close automatically；Electric gate valve carries 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 automatically according to test device level condition, decide whether carry out fluid infusion and
Tonifying Qi is operated；
(4) pump to be measured is started, industrial computer sends control signals to frequency converter, and the signal includes starting switch amount and controls letter
Number and speed setting Analog control signal, frequency converter exports corresponding power to drive pump to be measured according to control signal；
(5) progress trial operation, the parameter value that the parameter value and field instrument that artificial contrast's industrial computer is collected are shown, really
Protect each sensor signal transmission normal, after pump operation to be measured is stable, opens air bleeding valve, pipeline is exhausted；
(6) test program carried out on performance test experiments, industrial computer contrasts flow target value and flow actual value automatically,
Output control signal, pneumatic control valve automatically adjusts aperture according to control signal value size, TT＆C system is reached target operating condition
State, records rotating speed, power, inlet pressure, outlet pressure and flow value of the pump to be measured under different operating modes, and to these data
Handled, obtain performance test curve, to judge whether pump to be measured meets design requirement；
(7) after performance test terminates, cavitation experiment is if desired carried out, then vavuum pump is started by industrial computer, treats true
After empty pump runs well, start the test program output control signal on cavitation experiment, industrial computer control pump to be measured flow and
Inlet pressure, pneumatic control valve automatically adjusts aperture, Flow-rate adjustment mode and performance test process according to control signal value size
In Flow-rate adjustment mode it is similar, inlet pressure is by way of vavuum pump is vacuumized, and test program contrasts inlet pressure automatically
Desired value and inlet pressure actual value, selection start on pneumatic on-off valve or air extraction pipeline on pumping tank exhaust pipe
Pneumatic on-off valve, regulation flow and inlet pressure are reached after predetermined target value, after test system to be measured is stable, record pump to be measured
Rotating speed, power, inlet pressure, outlet pressure and flow value under different operating modes, and these data are handled, to judge
Whether pump to be measured meets design requirement；
(8) test knot speed, closes pump to be measured, vavuum pump and industrial computer.
Embodiment described above, simply the present invention preferred embodiments, not come limit the present invention practical range, therefore it is all according to
The equivalent change or modification that construction, feature and principle described in scope of the present invention patent are done, all 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, wherein：
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
Inlet pipeline more than 1 tunnel is equipped with, is set gradually along the direction of the inlet pipeline current on the inlet pipeline 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 more than 1 tunnel discharge pipe line, set successively on the discharge pipe line along the direction of the discharge pipe line current
Put electric gate valve and pressure sensor；Connected between the drain tank and the water tank by flow adjustment pipe more than 1 tunnel
Connect, electric gate valve, flowmeter are set gradually on the flow adjustment pipe along the direction of the flow adjustment pipe current
And pneumatic control valve；The pumping tank is arranged on the napex of the water tank, and the pumping tank is provided with exhaust pipe, described to take out
Pneumatic on-off valve is provided with air pipe and is connected with vavuum pump air entry, the gas outlet of the vavuum pump by pipeline with it is described
Gas-liquid separator is connected, and is connected with the exhaust pipe on air extraction pipeline, the air extraction pipeline and is provided with gas
Dynamic switch valve；Also connected between the vavuum pump and gas-liquid separator by supply channel, the gas-liquid separator and the storage
Liquid level gauge is connected on water pot；Temperature transmitter for testing water temperature in water tank is installed on the water tank；Institute
Jettron is respectively arranged with the replenishing line for stating water tank, the drain tank, the gas-liquid separator and the pumping tank
Valve；
The control system includes control cabinet and industrial computer, is coupled between the control cabinet and the industrial computer by Ethernet；
The control cabinet includes analog data collection card, analog data signal controller, digital signal acquiring card and data signal
Control card, the control cabinet by the analog data collection card gather the pressure sensor, the flowmeter, described turn
Data and the frequency converter frequency feedback data that square speed probe and the temperature transmitter are measured, are transferred to described
Industrial computer processing and feedback, and give pneumatic in the test device by analog data signal controller output control signal
The rotating speed of regulating valve and frequency converter to adjust the water-carrying capacity in flow adjustment pipe and set frequency converter；The control cabinet passes through number
Word data acquisition card gathers status signal, the operating state signal of the frequency converter and the liquid level gauge of the electric gate valve
Liquid level indication signal, be transferred to industrial computer processing and feed back, and pass through the Digital Signals card output signal control
Make the start and stop of the switch and the frequency converter and the vavuum pump of the electric gate valve and the pneumatic on-off valve.
2. pump closed testing bench control system as claimed in claim 1, it is characterised in that：The water inlet pipe of the test device
Manual normally closed switch valve is additionally provided with road, 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 claimed in claim 1, it is characterised in that：Hand is provided with the pumping tank
Manual normally closed switch valve is installed on manual tonifying Qi pipeline described in dynamic tonifying Qi pipeline.
4. pump closed testing bench control system as claimed in claim 1, it is characterised in that：The test device includes caliber
Different 3 road inlet pipelines, 3 road discharge pipe lines and 6 road flow adjustment pipes.
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 cabinets.
6. a kind of method of testing of the pump closed testing bench control system described in use Claims 1 to 4 any one, it is special
Levy and be：Comprise the following steps：
(1) pump to be measured is connected with inlet pipeline and discharge pipe line；
(2) test program on industrial computer is opened, relevant parameter is filled in, includes the model of pump to be measured, rated speed, specified stream
Amount, impeller diameter, trial operation pneumatic control valve aperture；
(3) testing results program, initialization test interface, test program is according to the model of pump to be measured, and rated speed and impeller are straight
Footpath, automatically selects this experiment used inlet pipeline, discharge pipe line and flow adjustment pipe, and transmit a signal to each electronic
The signal receiver of gate valve, then electric gate valve on the used pipeline of this experiment automatically open up, the electricity of this non-experiment
Dynamic gate valve is closed automatically；Electric gate valve carries working condition feedback function, and testing tube can be then found 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 computer sends control signals to frequency converter, the signal include starting switch amount control signal and
Speed setting Analog control signal, frequency converter exports corresponding power to drive pump to be measured according to control signal；
(5) trial operation, the parameter value that the parameter value and field instrument that artificial contrast's industrial computer is collected are shown are carried out, it is ensured that each
Sensor signal transmission is normal, after pump operation to be measured is stable, opens air bleeding valve, pipeline is exhausted；
(6) test program carried out on performance test experiments, industrial computer contrasts flow target value and flow actual value automatically, exports
Control signal, pneumatic control valve automatically adjusts aperture according to control signal value size, TT＆C system is reached target operating condition state,
Industrial computer records rotating speed, power, inlet pressure, outlet pressure and flow value of the pump to be measured under different operating modes, and to these numbers
According to being handled, whether design requirement is met with the combination property for judging pump to be measured；
(7) after performance test terminates, cavitation experiment is if desired carried out, then vavuum pump is started by industrial computer, treats vavuum pump
After normal operation, start flow and import that the test program output control signal on cavitation experiment, industrial computer controls pump to be measured
Pressure, pneumatic control valve automatically adjusts aperture according to control signal value size, and the side that inlet pressure is vacuumized by vavuum pump
Formula, test program contrasts inlet pressure desired value and inlet pressure actual value automatically, and selection starts on pumping tank exhaust pipe
Pneumatic on-off valve on pneumatic on-off valve or air extraction pipeline, regulation flow and inlet pressure reach predetermined target value
Afterwards, after test system to be measured is stable, rotating speed, power, inlet pressure, outlet pressure and flow of the pump to be measured under different operating modes are recorded
Value, and these data are handled, to judge whether pump to be measured meets design requirement；
(8) test knot speed, closes pump to be measured, vavuum pump and industrial computer.
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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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| CN109236684A (en) * | 2018-10-10 | 2019-01-18 | 江苏大学 | A kind of pump cavitation state monitoring apparatus and method |
| CN109709993A (en) * | 2018-12-29 | 2019-05-03 | 江苏和顺环保有限公司 | Liquid level intelligent control method |
| CN109869325A (en) * | 2019-01-29 | 2019-06-11 | 山东省农业机械科学研究院 | A kind of pump performance automatic test approach and system |
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| CN114383664A (en) * | 2022-01-18 | 2022-04-22 | 北矿机电科技有限责任公司 | Automatic measurement system and method for flotation bubble load |
| CN114593879A (en) * | 2022-01-28 | 2022-06-07 | 苏州恩都法汽车系统有限公司 | Valve test equipment |
| CN114607590A (en) * | 2020-12-08 | 2022-06-10 | 南京中船绿洲机器有限公司 | Electrical control method based on simultaneous test for marine air compressor |
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