CN106968934B - Pump cavitation surplus Auto-Test System and its method - Google Patents
Pump cavitation surplus Auto-Test System and its method Download PDFInfo
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- CN106968934B CN106968934B CN201710283136.1A CN201710283136A CN106968934B CN 106968934 B CN106968934 B CN 106968934B CN 201710283136 A CN201710283136 A CN 201710283136A CN 106968934 B CN106968934 B CN 106968934B
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- pump
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- water
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Abstract
The invention discloses a kind of pump cavitation surplus Auto-Test System and its methods, comprising: drain tank, water tank and the flow adjustment pipe for connecting drain tank and water tank are equipped with electric gate valve, flowmeter, pneumatic control valve on the pipeline；The pumping tank being mounted on water tank；Vacuum pump and exhaust pipe and its bye-pass that be connected to vacuum pump with pumping tank, equipped with switch valve；The motor being electrically connected with vacuum pump；The inlet pipeline for being equipped with electric gate valve and pressure transmitter and being connected to the water inlet of tested water pump；The outlet pipeline being connected to the water outlet of tested water pump is equipped with electric gate valve, pressure transmitter and switch valve on the pipeline；The observing and controlling cabinet for being integrated with data acquisition module and data control block and being connect with components such as aforementioned electric gate valve, pressure transmitters by signal wire is additionally provided with networking output interface on observing and controlling cabinet, for the industrial computer communication equipped with test program.The present invention can automatically, quickly and accurately test pump cavitation surplus.
Description
Technical field
The invention belongs to parallel water pump technical fields, and in particular to a kind of pump cavitation surplus Auto-Test System and its side
Method.
Background technique
The test of pump cavitation surplus is one of basic work of testing water pump, is in the entire production procedure of water pump
Important component part.Water pump during the work time, often generates cavitation phenomenons due to fluid local pressure declines in pump, thus right
Pump part or even pump case have detrimental effect, will lead to water pump cisco unity malfunction when serious, and the net positive suction head pumped is gone back at present
It can not be acquired by theoretical calculation.
Currently, pump cavitation experimental test passes through the valve for adjusting and being mounted on inlet pipeline mostly, gradually lower pump
Inlet pressure, while adjusting the valve being mounted on outlet pipeline and decreaseing beyond 3% to lift, then to keep flow constant
Cavitation experiment terminates.Entire test process need to adjust two parameters of inlet pressure and flow simultaneously, and not only measurement error is big, efficiency
It is low, and tester's large labor intensity.
Summary of the invention
It is an object of the invention to the test errors for overcoming existing pump cavitation test existing big, low efficiency and labour
The big defect of intensity, to improve the precision and the degree of automation of test.In order to realize the purpose, the invention proposes one kind
Pump cavitation surplus Auto-Test System comprising components described below:
(1) drain tank, water tank and the flow adjustment pipe for connecting drain tank and water tank, flow regulation pipe road are pacified
Equipped with electric gate valve, flowmeter, pneumatic control valve,
(2) the pumping tank being mounted on the water tank；
(3) vacuum pump and by vacuum pump and the exhaust pipe that be connected to of pumping tank, equipped with switch valve on exhaust pipe,
It is additionally provided with a straight open to atmosphere bye-pass on exhaust pipe, is also equipped with switch valve on bye-pass；
(4) motor being electrically connected with the vacuum pump；
(5) inlet pipeline being connected to the water inlet of tested water pump, electric gate valve is equipped on inlet pipeline and pressure becomes
Send device；
(6) outlet pipeline being connected to the water outlet of tested water pump is equipped with electric gate valve, pressure inverting on outlet pipeline
Device and switch valve；
(7) observing and controlling cabinet, by signal wire and aforementioned each electric gate valve, pressure transmitter, switch valve, flowmeter, pneumatic
Regulating valve connects, and is integrated with data acquisition module and data control block in observing and controlling cabinet, and network output is additionally provided on observing and controlling cabinet and is connect
Mouthful, for be equipped with test program industrial computer communication.
Based on the above technical solution, the present invention can add following technological means, to better solve the present invention
Technical problem to be solved:
Switch valve is also connected on the pumping tank, effect is to give pumping tank tonifying Qi.
Further, it is also equipped with temperature transmitter on the water tank, is used for real-time measurement fluid temperature.
It is matched with above-mentioned pump cavitation surplus Auto-Test System, invention further provides more than a kind of pump cavitation
The test method of amount comprising following step:
Step 1, industrial personal computer is according to performance test results, with fitting of a polynomial flow-lift curve Q-H, and will be entire bent
Line translates downwards 3% along ordinate direction, obtains Q-H3Curve；
Step 2 records the opening value that result gives pneumatic control valve according to performance test；
Step 3 after pump cavitation surplus test macro is stablized, starts vacuum pump；
Step 4 opens the switch valve on exhaust pipe, closes opening on the bye-pass being communicated with the atmosphere on exhaust pipe
Valve is closed, vacuum pump comes into operation；
Step 5, continuous acquisition pressure transmitter, flowmeter, the signal of torque rotary speed sensor, and calculate raise in real time
Journey value Ha；
Step 6, industrial personal computer is according to Q-H3Curve representation formula and in real time collected actual flow value, it is real-time by interpolation
Calculate corresponding lift determining reference value Ht；
Step 7, real time contrast HaAnd HtValue；
Step 8 works as Ha≤HtWhen, the switch valve on exhaust pipe is closed, the switch valve on bye-pass is opened；
Step 9 opens the switch valve on pumping tank, carries out tonifying Qi to pumping tank, is closed on pumping tank after tonifying Qi
Switch valve；
Step 10 repeats the second to the 9th step into next operating condition experimental tests, until all operating points are tested
Finish；
Step 11 draws flow-net positive suction head Q-NPSH curve；
One group of flow targets operating condition value to be measured is substituted into Q-NPSH curve representation formula, then can acquire one group by step 12
Net positive suction head value.
The present invention have it is following the utility model has the advantages that
The present invention is based on the integrated uses of computer technology, automatic control technology and sensor technology, can be automatic, fast
Speed accurately tests pump cavitation surplus, to greatly improve the testing efficiency and measuring accuracy of pump cavitation surplus, drops
The low labor intensity of tester, improves the working environment of tester.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the pump cavitation surplus test macro in the present invention；
Fig. 2 is the flow chart of the pump cavitation surplus test method in the present invention；
Fig. 3 is that the test result data in one embodiment of the present of invention handles figure；
Fig. 4 is the pump cavitation trial curve figure in one embodiment of the present of invention.
Specific embodiment
Two embodiments of the invention are discussed in detail below in conjunction with attached drawing.
Embodiment 1
As shown in Figure 1, a kind of pump cavitation surplus Auto-Test System comprising components described below:
(1) drain tank 1, water tank 2 and the flow adjustment pipe 3 for being connected to drain tank 1 with water tank 2, flow are adjusted
Electric gate valve 301, flowmeter 302, pneumatic control valve 303 are sequentially installed on pipeline 3.The main function of electric gate valve 301 is,
Water flow when needing to overhaul pipeline or instrument, for being truncated in flow adjustment pipe 3.Flowmeter 302 is for measuring tested water
The flow of pump 10.Pneumatic control valve 303 is used to adjust the water flow in flow adjustment pipe 3.Temperature is also equipped on water tank 2
Transmitter 201 is used for real-time measurement fluid temperature.
(2) the pumping tank 4 being mounted on the water tank 2 is evacuated on tank 4 and is also connected with switch valve 401, effect be to
It is evacuated 4 tonifying Qi of tank.
(3) vacuum pump 5 and by vacuum pump 5 and the exhaust pipe 6 that is connected to of pumping tank 4, equipped with opening on exhaust pipe 6
Close valve 601；It is additionally provided with a straight open to atmosphere bye-pass 602 on exhaust pipe 6, switch valve 603 is housed on bye-pass 602；
(4) motor 7 being electrically connected with the vacuum pump 5, vacuum pump 5 are driven by motor 7, open opening on exhaust pipe 6
Valve 601 is closed, then pumping tank 4 can be evacuated, to reduce the pressure of tested pump intake；When on opening bye-pass 602
Switch valve 603, close exhaust pipe 6 on switch valve 601 when, vacuum pump 5 does not come into operation, and the present embodiment passes through the two
The switching of switch valve and avoid frequent starting, stop motor 7.
(5) inlet pipeline 8 being connected to the water inlet of tested water pump 10 is equipped with 801 He of electric gate valve on inlet pipeline 8
Pressure transmitter 802；Water flow when electric gate valve 801 is mainly used for mounting and dismounting water pump 10 to be measured in truncation inlet pipeline 8,
Pressure transmitter 802 is used to measure the pressure of the water inlet of tested water pump 10, and pressure signal is changed into electric signal.
(6) outlet pipeline 9 being connected to the water outlet of tested water pump 10, be equipped on outlet pipeline 9 electric gate valve 901,
Pressure transmitter 902 and switch valve 903.The main function of electric gate valve 901 is, when needing to overhaul pipeline or instrument, to be used for
The water flow in outlet pipeline 9 is truncated.Pressure transmitter 902 is used to measure the pressure of the water outlet of tested water pump 10, and will pressure
Force signal is changed into electric signal.Switch valve 903 during testing to outlet pipeline 9 for being vented.
(7) observing and controlling cabinet, by signal wire and aforementioned each electric gate valve, pressure transmitter, switch valve, flowmeter, pneumatic
Regulating valve connects, and is integrated with data acquisition module and data control block in observing and controlling cabinet, and network output is additionally provided on observing and controlling cabinet and is connect
Mouthful, for be equipped with test program industrial computer communication.
When pump cavitation surplus test macro of the present invention works, first tested water pump 10 is turned with pump motor 11 by torque
Fast sensor 12 connects, and pump motor 11 drives water pump 10 to operate after starting.During test, water outlet of the water from tested water pump 10
Mouth discharge enters drain tank 1 through outlet pipeline 9, then flows into water tank 2 through flow adjustment pipe 3, forms a closed system.
When testing pump cavitation surplus, start motor 7, open the switch valve 601 on exhaust pipe 6, closes the switch on bye-pass 602
Valve 603, vacuum pump 2 come into operation, and are evacuated to pumping tank 4, thus achieve the purpose that adjust tested pump intake pressure,
When the reduction of tested pump intake pressure value causes water pump that cavitation occurs, the cavitation experiment of the operating point terminates.Under entrance
Before the test of one operating point, the switch valve 601 on exhaust pipe 6 is closed, opens the switch valve 603 on bye-pass 602, then very
Sky pump 5 does not come into operation.It is aforementioned each electric gate valve, pressure transmitter, switch valve, flowmeter, pneumatic in entire test process
The signal wire of regulating valve is linked into the data acquisition module of observing and controlling cabinet, and data acquisition module is defeated by the signal of above-mentioned each transmitter
Enter into industrial personal computer and carries out data processing.The instruction issued after data is handled according to industrial personal computer, data control block is controllable each
The working condition of electric gate valve, switch valve and pneumatic control valve.
Embodiment 2
It is pump cavitation surplus test method involved in embodiment 2, that is, the method part in the present invention.Generally
Come, before carrying out pump cavitation test, first progress pump performance test (abbreviation performance test), result of performance test can be with
Obtain one group of flow, lift data.When carrying out cavitation experiment, flow, lift data can be passed through fitting of a polynomial into a flow-
Head curve Q-H, and the curve translates downwards along ordinate to 3% (even if the also institute in a coordinate system of the every bit on the curve
3%) corresponding height value H decline, obtains cavitation experiment and judges datum curve Q-H3.In addition, can also during performance test
One group of flow, valve opening data, the i.e. corresponding valve opening value of each target flow value are obtained, these data are to cavitation
Test is also useful.In short, the present invention makes full use of performance test results, cavitation experiment efficiency can be improved, save and adjust
Time.
Net positive suction head test macro of the present invention reduces the side of unit fixed on water pump suction pressure using vacuum pump to the pumping of pumping tank
Formula, entire procedures system pipe resistance of testing remain unchanged, and system tends to dynamic equilibrium.Therefore, after starting vacuum pump, industrial personal computer
Start each transmitter reading of continuous acquisition, and calculates the lift value H of water outlet pump in real timea.Meanwhile industrial personal computer is according to Q-H3Curve
Expression formula and in real time collected actual flow value, corresponding lift determining reference value H is calculated by interpolation in real timet.With
Pumping of the vacuum pump to pumping tank is evacuated vacuum degree in tank and gradually rises, and unit fixed on water pump suction pressure gradually lowers, and survey calculation obtains
Lift value HaIt is gradually reduced；And meter readings are also gradually reduced, then the benchmark lift value H that interpolation calculation obtainstAlso gradually subtract
It is small.Two lift value sizes of industrial personal computer real time contrast, until working as Ha≤HtWhen, then the cavitation experiment of the operating point terminates.Then into
Enter the test of next operating condition.
After testing an operating point, pumping tank has formed vacuum state, therefore is entering next operating point
Cavitation experiment before, pumping tank need to be carried out tonifying Qi to its it is internal reach atmospheric pressure state, during tonifying Qi, vacuum pump must
It must stop to pumping tank pumping.For the present embodiment, pass through the switch valve 601 and bye-pass on switching exhaust pipe 6
The working condition of switch valve 603 on 602, and frequent starting vacuum pump is avoided, that is, turn on the switch valve 601, turn off the switch valve
603, vacuum pump is evacuated pumping tank；Valve 601 is turned off the switch, valve 603 is turned on the switch, vacuum pump stops taking out pumping tank
Gas is equivalent to stopping vaccum pump motor.
The basic principle of the test method in the present invention is described above, its job step is specifically introduced below in conjunction with attached drawing
Suddenly；
A method of pump cavitation surplus is tested with pump cavitation surplus test macro shown in FIG. 1,
Workflow as shown in Fig. 2, specifically include the following steps:
Step 1, industrial personal computer is according to performance test results, with fitting of a polynomial flow-lift curve Q-H, and will be entire bent
Line translates downwards 3% along ordinate direction, obtains Q-H3Curve；
Step 2 records the opening value that result gives pneumatic control valve 303 according to performance test；
Step 3 after pump cavitation surplus test macro is stablized, starts vacuum pump 5；
Step 4 opens the switch valve 601 of exhaust pipe 6, closes the switch valve 603 on bye-pass 602, and vacuum pump 5 is thrown
Enter to use；
Step 5, continuous acquisition pressure transmitter 802,902, flowmeter 302, the signal of torque rotary speed sensor 12, and
Lift value H is calculated in real timea；
Step 6, industrial personal computer is according to Q-H3Curve representation formula and in real time collected actual flow value, it is real-time by interpolation
Calculate corresponding lift determining reference value Ht；
Step 7, real time contrast HaAnd HtValue；
Step 8 works as Ha≤HtWhen, the switch valve 601 of exhaust pipe 6 is closed, the switch valve 603 on bye-pass 602 is opened；
Step 9 opens the switch valve 401 on pumping tank 4, carries out tonifying Qi to pumping tank, turns off the switch valve after tonifying Qi
401；
Step 10 repeats the second to the 9th step into next operating condition experimental tests, until all operating points are tested
Finish；
Step 11, draws flow-net positive suction head Q-NPSH curve, and the curve is as shown in Figure 4；
One group of flow targets operating condition value to be measured is substituted into Q-NPSH curve representation formula, then can acquire one group by step 12
Net positive suction head value.
The test of pump cavitation surplus can be completed by above-mentioned 12 steps, test result is after data processing, such as
Shown in Fig. 3.
Claims (4)
1. a kind of pump cavitation surplus Auto-Test System comprising components described below:
(1) drain tank, water tank and the flow adjustment pipe for connecting drain tank and water tank, flow regulation pipe road are equipped with
Electric gate valve, flowmeter, pneumatic control valve；
(2) the pumping tank being mounted on the water tank；
(3) vacuum pump and by vacuum pump and the exhaust pipe that be connected to of pumping tank, is equipped with switch valve on exhaust pipe, is evacuated
It is additionally provided with a straight open to atmosphere bye-pass on pipeline, is also equipped with switch valve on bye-pass；
(4) motor being electrically connected with the vacuum pump；
(5) inlet pipeline being connected to the water inlet of tested water pump is equipped with electric gate valve and pressure transmitter on inlet pipeline；
(6) outlet pipeline being connected to the water outlet of tested water pump, be equipped on outlet pipeline electric gate valve, pressure transmitter and
Switch valve；
(7) observing and controlling cabinet passes through signal wire and aforementioned each electric gate valve, pressure transmitter, switch valve, flowmeter, pneumatic adjusting
Valve connects, and is integrated with data acquisition module and data control block in observing and controlling cabinet, networking output interface is additionally provided on observing and controlling cabinet, uses
In be equipped with test program industrial computer communication.
2. pump cavitation surplus Auto-Test System as described in claim 1, it is characterised in that: be also connected on the pumping tank
There is switch valve, effect is to give pumping tank tonifying Qi.
3. pump cavitation surplus Auto-Test System as claimed in claim 1 or 2, it is characterised in that: on the water tank also
Temperature transmitter is installed, real-time measurement fluid temperature is used for.
4. a kind of test method of pump cavitation surplus comprising following step:
Step 1, industrial personal computer is according to performance test results, with fitting of a polynomial flow-lift curve Q-H, and by entire curve edge
Ordinate direction translates downwards 3%, obtains Q-H3Curve；
Step 2 records the opening value that result gives pneumatic control valve according to performance test；
Step 3 starts vacuum pump after pump cavitation surplus Auto-Test System is stablized；
Step 4 opens the switch valve on exhaust pipe, closes the switch valve on the bye-pass being communicated with the atmosphere on exhaust pipe,
Vacuum pump comes into operation；
Step 5, continuous acquisition pressure transmitter, flowmeter, torque rotary speed sensor signal, and calculate lift value in real time
Ha；
Step 6, industrial personal computer is according to Q-H3Curve representation formula and in real time collected actual flow value, are calculated in real time by interpolation
Corresponding lift determining reference value Ht；
Step 7, real time contrast HaAnd HtValue；
Step 8 works as Ha≤HtWhen, the switch valve on exhaust pipe is closed, the switch valve on bye-pass is opened；
Step 9 opens the switch valve on pumping tank, carries out tonifying Qi to pumping tank, the switch on pumping tank is closed after tonifying Qi
Valve；
Step 10 repeats the second to the 9th step into next operating condition experimental tests, until all operating points are completed；
Step 11 draws flow-net positive suction head Q-NPSH curve；
One group of flow targets operating condition value to be measured is substituted into Q-NPSH curve representation formula, then can acquire one group of cavitation by step 12
Margin value.
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| CN201710283136.1A CN106968934B (en) | 2017-04-26 | 2017-04-26 | Pump cavitation surplus Auto-Test System and its method |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1257287A2 (en) * | 1985-01-04 | 1986-09-15 | Предприятие П/Я В-2504 | Method of cavitation testing of pump |
| CN102022348A (en) * | 2010-12-07 | 2011-04-20 | 北京航空航天大学 | Water pump cavitation measuring method |
| CN102338074A (en) * | 2010-07-23 | 2012-02-01 | 北京航天动力研究所 | Sealing type test device and method applicable to various types of oil pumps |
| 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 |
| CN202402266U (en) * | 2011-11-16 | 2012-08-29 | 北京航天动力研究所 | Open and closed pump test control system |
| CN103277294A (en) * | 2013-06-14 | 2013-09-04 | 武汉大学 | Multifunctional water pump experiment table |
| CN103967806A (en) * | 2014-04-16 | 2014-08-06 | 浙江大学 | Water pump cavitation testing method and device |
| CN205154670U (en) * | 2015-12-07 | 2016-04-13 | 榆林学院 | Centrifugal pump cavitation is comprehensive experiment system for experiment |
| CN105909536A (en) * | 2016-05-10 | 2016-08-31 | 浙江理工大学 | Gas-liquid two-phase flow performance testing system and method for centrifugal pump |
| CN206801840U (en) * | 2017-04-26 | 2017-12-26 | 广东肯富来泵业股份有限公司 | Pump cavitation surplus Auto-Test System |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101093544B1 (en) * | 2009-05-13 | 2011-12-14 | 한국항공우주연구원 | Testing method and test stand for the determination of the cavitation characteristics of pump |
-
2017
- 2017-04-26 CN CN201710283136.1A patent/CN106968934B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1257287A2 (en) * | 1985-01-04 | 1986-09-15 | Предприятие П/Я В-2504 | Method of cavitation testing of pump |
| CN102338074A (en) * | 2010-07-23 | 2012-02-01 | 北京航天动力研究所 | Sealing type test device and method applicable to various types of oil pumps |
| CN102022348A (en) * | 2010-12-07 | 2011-04-20 | 北京航空航天大学 | Water pump cavitation measuring method |
| CN202402266U (en) * | 2011-11-16 | 2012-08-29 | 北京航天动力研究所 | Open and closed pump test control system |
| 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 |
| CN103277294A (en) * | 2013-06-14 | 2013-09-04 | 武汉大学 | Multifunctional water pump experiment table |
| CN103967806A (en) * | 2014-04-16 | 2014-08-06 | 浙江大学 | Water pump cavitation testing method and device |
| CN205154670U (en) * | 2015-12-07 | 2016-04-13 | 榆林学院 | Centrifugal pump cavitation is comprehensive experiment system for experiment |
| CN105909536A (en) * | 2016-05-10 | 2016-08-31 | 浙江理工大学 | Gas-liquid two-phase flow performance testing system and method for centrifugal pump |
| CN206801840U (en) * | 2017-04-26 | 2017-12-26 | 广东肯富来泵业股份有限公司 | Pump cavitation surplus Auto-Test System |
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Address after: 528131 No. 1 and 3 Hui Cai road, Bai Ni Town, Sanshui District, Foshan, Guangdong Applicant after: GUANGDONG KENFULAI PUMP CO., LTD. Address before: 528000 14 Riverside Road, Chancheng District, Foshan, Guangdong Applicant before: GUANGDONG KENFULAI PUMP CO., LTD. |
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