CN107781155A - Test system, durability test method and performance test methods - Google Patents
Test system, durability test method and performance test methods Download PDFInfo
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- CN107781155A CN107781155A CN201710799471.7A CN201710799471A CN107781155A CN 107781155 A CN107781155 A CN 107781155A CN 201710799471 A CN201710799471 A CN 201710799471A CN 107781155 A CN107781155 A CN 107781155A
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- tested water
- water pump
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- test
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
Abstract
The invention discloses a kind of test system, durability test method and performance test methods, are related to drainage machinery technical field of measurement and test, and main purpose is to reduce cost.The test system includes water tank, and the first pipeline includes the first main line connected with tank entry and multiple first bye-passes communicated therewith；Second pipeline includes the second main line and multiple second bye-passes communicated therewith, and multiple tested water valves in parallel are used between multiple first bye-passes and multiple second bye-passes；3rd pipeline one end connects with tank outlet, and the other end and the second main line other end are used to connect tested water pump；First pressure sensor and second pressure sensor are respectively arranged at the 3rd pipeline and the second main line, and flow sensor is arranged at the first main line；Control unit is used to control multiple tested water valve alternation switches, and opens at least one in multiple tested water valves, and the tested water pump of control alternately opens and closes.Present invention is mainly used for pump performance and water pump and water valve durability test.
Description
Technical field
The present invention relates to drainage machinery technical field of measurement and test, more particularly to a kind of test system, durability test method and
Performance test methods.
Background technology
Water pump and water valve are parts essential in water cooling heat management system, the performance and water pump of water pump and water valve
Durability is an important factor for influenceing heat management system service life.
In order to ensure the service life of water cooling heat management system, before actual selected part, the performance generally to water pump
And can the durability of water pump and water valve meet that requirement is tested.In the prior art, the test to pump performance and right
The durability test of water pump and water valve is individually separately carried out, that is, build it is corresponding it is different test stand, and in an experiment
Stand carries out the performance and durability test of water pump, carries out the durability test of water valve in another test-bed, cost is higher.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of test system, durability test method and performance test methods, main
Syllabus is to reduce cost.
To reach above-mentioned purpose, present invention generally provides following technical scheme：
In a first aspect, the embodiments of the invention provide a kind of test system, including：
Water tank, the first pipeline, the second pipeline, the 3rd pipeline, first pressure sensor, second pressure sensor, flow pass
Sensor；
The water tank has outlet and entrance；
First pipeline includes the first main line and multiple first bye-passes connected with described first main line one end,
The other end of first main line connects with the entrance；
Second pipeline includes the second main line and multiple second bye-passes connected with described second main line one end,
It is used to connect a tested water valve between each first bye-pass and each second bye-pass, makes multiple tested water
Valve is in parallel；
One end of 3rd pipeline and the outlet, the other end and second main line of the 3rd pipeline
The other end be used for connect tested water pump；
The first pressure sensor is arranged on the 3rd pipeline, and the second pressure sensor is arranged at described
On two main lines, the flow sensor is arranged on first main line；
Control unit, described control unit is used to control multiple tested water valves continuously alternately to open and close, and makes
At least one in multiple tested water valves is in opening, and the control tested water pump is continuously alternately opened and closed
Close.
Second aspect, the embodiment of the present invention also provide a kind of durability test method, for foregoing test system, bag
Include：
Control multiple tested water valves continuously alternately to open and close, and make at least one in multiple tested water valves
It is individual to be in opening；
The tested water pump is controlled continuously alternately to open and close；
When the opening and closing number of each tested water valve is equal to preset times, detect whether its sealing meets
Preset requirement, if it seals sexual satisfaction preset requirement, then it represents that the tested water valve is qualified.
Whether when the opening and closing time of the tested water pump being equal to the first preset time, detecting its bearing can be steady
Rotate, and whether its water seal leaks, if the bearing energy smooth rotation, and the water seal No leakage, then it represents that it is described tested
Water pump is qualified.
Specifically, the multiple tested water valves of control continuously alternately open and close, and make multiple tested water
At least one in valve includes in opening：
The each tested water valve of control continuously alternately opens the second preset time and closes the 3rd preset time, and at least
One in two tested water valves is opened the 4th preset time relative to another delay；
Wherein, the 3rd preset time is less than second preset time, and the 4th preset time is more than described the
Three preset times are less than second preset time.
Specifically, the other end of the second main line described in the test system is communicated with multiple 3rd bye-passes；It is described
3rd pipeline includes the 3rd main line and multiple 4th bye-passes connected with described 3rd main line one end, the 3rd supervisor
The other end on road and the outlet；It is used to connect one between each 3rd bye-pass and each 4th bye-pass
The tested water pump, make multiple tested water pumps in parallel；The first pressure sensor is arranged on the 3rd main line；
The control tested water pump, which continuously replaces opening and closing, to be included：
The each tested water pump of control continuously alternately opens and closes；
When the opening and closing time in the tested water pump is equal to the first preset time, detects its bearing and whether can
Whether smooth rotation, and its water seal leak, if the bearing energy smooth rotation, and the water seal No leakage, then it represents that it is described
Tested water pump it is qualified including：
When the opening and closing time of each tested water pump being equal to the first preset time, detect its bearing and whether can
Whether smooth rotation, and its water seal leak, if the bearing energy smooth rotation, and the water seal No leakage, then it represents that it is described
Tested water pump is qualified.
Specifically, the tested water pump is can not adjustable speed water pump；The control tested water pump continuously alternately open and
Closing includes：
Control the tested water pump continuously alternately to open the 5th preset time with rated speed and close the 6th preset time,
Until the total time opened and closed is first preset time.
Specifically, the tested water pump is adjustable speed water pump；The control tested water pump is continuously alternately opened and closed
Closure includes：
First stage：Control the tested water pump continuously alternately to open the 7th preset time with the first tachometer value and close the
Eight preset times；
Second stage：Control the tested water pump continuously alternately to open the 9th preset time with the second tachometer value and close the
Ten preset times；
Wherein, the first stage and the second stage alternately, until total time alternately is described the
One preset time.
The third aspect, the embodiment of the present invention also provide a kind of performance test methods, for above-mentioned test system, including：
Multiple tested water valves are controlled to be in opening；
By the flow sensor and the regulation tank entry and the pressure regulator valve of outlet, the tested water pump is obtained
Multiple different flow values；
By the first pressure sensor and the second pressure sensor, the tested water pump is obtained each described
The pressure difference value of inlet and outlet under flow value；
According to the flow value and the pressure difference value, the flow-pressure differential curve of the tested water pump is obtained.
Specifically, the other end of the second main line described in the test system is communicated with multiple 3rd bye-passes；It is described
3rd pipeline includes the 3rd main line and multiple 4th bye-passes connected with described 3rd main line one end, the 3rd supervisor
The other end on road and the outlet；It is used to connect one between each 3rd bye-pass and each 4th bye-pass
The tested water pump, make multiple tested water pumps in parallel；The first pressure sensor is arranged on the 3rd main line；
It is described by the flow sensor and the regulation tank entry and the pressure regulator valve of outlet, obtain the tested water
Before multiple different flow values of pump, methods described also includes：
One in multiple tested water pumps is controlled to be in opening；
It is described by the flow sensor and the regulation tank entry and the pressure regulator valve of outlet, obtain the tested water
Multiple different flow values of pump include：
By the flow sensor and the regulation tank entry and the pressure regulator valve of outlet, obtain in opening
Multiple different flow values of the tested water pump；
It is described by the first pressure sensor and the second pressure sensor, obtain the tested water pump each
The pressure difference value of inlet and outlet under the flow value includes：
By the first pressure sensor and the second pressure sensor, obtain described tested in opening
The pressure difference value of inlet and outlet of the water pump under each flow value.
By above-mentioned technical proposal, cabinet of the present invention and test system, durability test method and performance test methods are extremely
Have the advantages that less：
Test system provided in an embodiment of the present invention, by water tank, the first pipeline, the second pipeline and the 3rd pipeline and
The setting of each sensor and control unit, realize when the performance and the durability of water pump and water valve that need test water pump
When, tested water pump only need to be connected to the other end of the 3rd pipeline and the other end of the second main line, by multiple tested water valves point
It is not connected to accordingly between each first bye-pass and each second bye-pass, opens all tested water valves or one of water
Valve, ensure that the current in pipeline are unimpeded, you can carry out the performance test of tested water pump；Moreover, controlled by control unit multiple
Tested water valve continuously alternately opens and closes, and at least one in multiple tested water valves is in opening, ensure that pipe
Current in road are unimpeded, meanwhile, control tested water pump continuously alternately to open and close, you can to realize tested water pump and multiple tested
Carried out while water valve durability test.Compared with prior art, technical scheme provided in an embodiment of the present invention, utilization is realized
One test device completes the purpose of the durability test of the performance test of water pump and water pump and water valve, reduces cost；
Meanwhile the purpose that the durability test for also achieving tested water pump and tested water valve can be carried out simultaneously, moreover, it is also possible to once
The durability test of multiple tested water valves is completed, effectively increases operating efficiency.
Brief description of the drawings
Fig. 1 is a kind of structural representation of test system provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic flow sheet of durability test method provided in an embodiment of the present invention；
Fig. 3 is the schematic flow sheet of another durability test method provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic flow sheet of performance test methods provided in an embodiment of the present invention；
Fig. 5 is the schematic flow sheet of another performance test methods provided in an embodiment of the present invention.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to the specific reality of the test system of the present patent application, durability test method and performance test methods
Mode, structure, feature and its effect is applied to be described in detail.In the following description, different " embodiment " or " embodiment "
What is referred to is not necessarily the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can be by any conjunctions
Conformal formula combination.
As shown in figure 1, the embodiments of the invention provide a kind of test device, including water tank 1, the first pipeline, the second pipeline,
3rd pipeline, first pressure sensor 2, second pressure sensor 3, flow sensor 4；Wherein, water tank 1 has outlet 11 and entered
Mouth 12；First pipeline includes the first main line 5 and multiple first bye-passes 6 connected with the one end of the first main line 5, the first supervisor
The other end on road 5 connects with entrance 12；Second pipeline includes the second main line 7 and connected with the one end of the second main line 7 multiple
Second bye-pass 8, it is used to connect a tested water valve 10 between each first bye-pass 6 and each second bye-pass 8, makes multiple quilts
It is in parallel to survey water valve 10；One end of 3rd pipeline connects with outlet 11, the other end of the other end of the 3rd pipeline and the second main line 7
For connecting tested water pump 20；First pressure sensor 2 is arranged on the 3rd pipeline, and second pressure sensor 3 is arranged at described
On second main line 7, flow sensor 4 is arranged on the first main line 5；Control unit, the control unit are multiple for controlling
Tested water valve 10 continuously alternately opens and closes, and at least one in multiple tested water valves 10 is in opening, and
The tested water pump 20 of control continuously alternately opens and closes.
The test system, by being the structure shape for including main line and bye-pass by the first pipeline and the second circuit design
Formula so that multiple tested water valves 10 can be to connect in the loop after parallel with one another with tested water pump 20 again, direction of arrow table in Fig. 1
Show water (flow) direction, moreover, being separately provided for measuring the tested pressure at two ends of water pump 20 on the 3rd pipeline and the second main line 7
The first pressure sensor 2 and second sensor of value, and flow value in being provided with the first pipeline for measuring loop
Flow sensor 4, the performance test that tested water pump 20 can have both been carried out using the test device is realized, can be tested again
The durability test of water pump 20 and tested water valve 10.Wherein, first pressure sensor 2 and second pressure sensor 3 can also be by
Differential manometer replaces.
Test system provided in an embodiment of the present invention, by water tank, the first pipeline, the second pipeline and the 3rd pipeline and
The setting of each sensor and control unit, realize when the performance and the durability of water pump and water valve that need test water pump
When, tested water pump only need to be connected to the other end of the 3rd pipeline and the other end of the second main line, by multiple tested water valves point
It is not connected to accordingly between each first bye-pass and each second bye-pass, opens all tested water valves or one of water
Valve, to ensure that the current in pipeline are unimpeded, you can carry out the performance test of tested water pump；Moreover, controlled by control unit more
Individual tested water valve continuously alternately opens and closes, and at least one in multiple tested water valves is in opening, to ensure
Current in pipeline are unimpeded, meanwhile, control tested water pump continuously alternately to open and close, you can to realize tested water pump and multiple quilts
Carried out while surveying water valve durability test.Compared with prior art, technical scheme provided in an embodiment of the present invention, realizes profit
The purpose of the durability test of the performance test of water pump and water pump and water valve is completed with a test device, is reduced into
This；Meanwhile the purpose that the durability test for also achieving tested water pump and tested water valve can be carried out simultaneously, moreover, it is also possible to
The durability test of multiple tested water valves is once completed, effectively increases operating efficiency.
With reference to Fig. 1 and with reference to figure 2, the embodiment of the present invention additionally provides a kind of durability test method, for above-mentioned survey
Test system, this method include：
101st, control multiple tested water valves continuously alternately to open and close, and make in multiple tested water valves at least
There is one to be in opening.
Wherein, while controlling multiple tested water valves 10 continuously alternately to open and close, make in multiple tested water valves 10
At least one is in opening, i.e., while durability test is carried out to multiple tested water valves 10, ensure that test system
Fluid can be with smooth circulation, so as to ensure that the durability test of tested water pump 20 can be with tested water valve in the whole loop of system
10 durability test is completed simultaneously, improves operating efficiency.
102nd, the tested water pump 20 is controlled continuously alternately to open and close.
103rd, when the opening and closing number of each tested water valve 10 is equal to preset times, detecting its sealing is
It is no to meet preset requirement, if it seals sexual satisfaction preset requirement, then it represents that the tested water valve 10 is qualified.
Wherein, the preset times can be 10000 times, and the preset requirement can be on water in machinery industry standard
The sealing requirements of valve, can be to being tested water when the opening and closing number of each tested water valve 10 of control reaches 10000 times
The sealing of valve 10 is detected, and judges whether the sealing of the tested water valve 10 after 10000 switch tests meets machine
Sealing requirements in tool professional standard on water valve, if satisfied, then representing that the tested water valve 10 is qualified, it may apply to water cooling
In heat management system, otherwise, then it can not be applied in water cooling management system, so as to ensure that the use longevity of water cooling heat management system
Life.
104th, when the opening and closing time of the tested water pump being equal to the first preset time, detect its bearing and whether can
Whether smooth rotation, and its water seal leak, if the bearing energy smooth rotation, and the water seal No leakage, then it represents that it is described
Tested water pump is qualified.
Wherein, first preset time can be 500 hours, continuously alternately be opened and closed in the tested water pump 20 of control
At 500 hours, can detect by 500 hours it is continuous alternately open and close after the rotating shaft of tested water pump 20 whether can be with
Smoothly rotate, whether water seal can leak, if rotating shaft can also be rotated smoothly, the good No leakage of sealing of water seal,
Then represent that the tested water pump 20 is qualified, may apply in water cooling heat management system, otherwise, then can not be applied to water cooling management system
In system, so as to ensure that the service life of water cooling heat management system.
Specifically, it can be non-adjustable fast water pump or adjustable speed water pump to be tested water pump 20.
If tested water pump 20 is non-adjustable water pump, step 102 can include：The tested water pump 20 is controlled with rated speed
It is continuous alternately to open the 5th preset time and close the 6th preset time, until the total time opened and closed is pre- for described first
If the time.
Wherein, the 5th preset time can be 45 seconds, and the 6th preset time can be 15 seconds.Specific durability is surveyed
Try can be suddenly：First, it is tested water pump 20 to operate 45 seconds under rated speed (state that i.e. dutycycle is 100%), suspends
15 seconds；Remained in operation 45 seconds using the rotating speed (i.e. dutycycle is 50% state) less than rated speed again, suspend 15 seconds.I.e. tested water
Pump 20 is 100% state and 50% state alternate run in dutycycle, until operating reaches 500h at total time.
If tested water pump 20 is adjustable speed water pump, step 102 can include：First stage：Control the tested water pump 20
The 7th preset time is continuously alternately opened with the first tachometer value and closes the 8th preset time；Second stage：Control described tested
Water pump 20 is continuously alternately opened the 9th preset time with the second tachometer value and closes the tenth preset time；Wherein, first rank
Section and the second stage are first preset time up to total time alternately alternately.
Wherein, the 5th preset time can be 45 seconds, and the 6th preset time can be 15 seconds.Specific durability is surveyed
Try can be suddenly：Tested water pump 20 is operated 45 seconds with its rated speed, suspends 15 seconds；Then rerun 45 seconds, suspend 15 seconds,
Until operating reaches 500h at total time.
A kind of durability test method provided in an embodiment of the present invention, is entered using foregoing test system to water pump and water valve
Row durability test, when being tested, tested water pump can be connected to the other end and the second main line of the 3rd pipeline
The other end, multiple tested water valves are connected to accordingly between each first bye-pass and each second bye-pass, and led to
Crossing control unit controls multiple tested water valves continuously alternately to open and close, and is at least one in multiple tested water valves
Opening, to ensure that the current in pipeline are unimpeded, meanwhile, control tested water pump continuously alternately to open and close, you can to realize
Carried out while tested water pump and multiple tested water valve durability tests.Compared with prior art, it is provided in an embodiment of the present invention
Technical scheme, realize using a test system to complete the purpose of the durability test of water pump and water valve, reduce cost；
Meanwhile the purpose that the durability test for also achieving tested water pump and tested water valve can be carried out simultaneously, moreover, it is also possible to once
The durability test of multiple tested water valves is completed, effectively increases operating efficiency.
With reference to Fig. 1 and with reference to figure 3, the embodiment of the present invention additionally provides another durability test method, for above-mentioned
Test system, this method include：
201st, each tested water valve is controlled continuously alternately to open the second preset time and close the 3rd preset time, and
One at least two tested water valves is opened the 4th preset time relative to another delay.
Wherein, the 3rd preset time is less than second preset time, and the 4th preset time is more than described the
Three preset times are less than second preset time.Specifically, second preset time can be 100 seconds, the 3rd it is default when
Between can be 50 seconds, the 4th preset time can be 75 seconds, you can with control each tested water valve 10 continuously alternately open 100
Second, close 50 seconds, moreover, one at least two tested water valves 10 opens 75 seconds relative to another delay, so as to ensure
At least one in multiple tested water valves 10 is in opening, that is to say, that ensure that multiple tested water valves 10 will not be same
When close so that the flowing of the loop fluid of test system is unimpeded, and then ensure that tested water pump 20 and tested water valve 10 durability
Carried out while test.For example, when the quantity of tested water valve 10 is 2, first tested water valve 10 can be controlled to open first
It is dynamic, after delay 75 seconds, then control second tested water valve 10 to start so that the opening time of a tested water valve 10 is more than another
The shut-in time of one tested water valve 10, so as to ensure that two tested water valves 10 during durability test will not be simultaneously
Close.
202nd, each tested water pump is controlled continuously alternately to open and close.
Specifically, the other end of the second main line 7 can be communicated with multiple 3rd bye-passes 9 in the test system；The
Three pipelines can include the 3rd main line 13 and multiple 4th bye-passes 14 connected with the one end of the 3rd main line 13, the 3rd supervisor
The other end on road 13 connects with the outlet 11 of water tank 1；It is used to connect between each 3rd bye-pass 9 and each 4th bye-pass 14
One tested water pump 20, make multiple tested water pumps 20 in parallel；First pressure sensor 2 is arranged on the 3rd main line 13.It is such
Structure design, realizing multiple tested water pumps 20 can be connected in parallel in the loop of test system, can control in test each
Tested water pump 20 continuously alternately opens and closes so that multiple tested water pumps 20 can carry out durability test experiment simultaneously, enter
One step improves operating efficiency.Wherein, during testing experiment, multiple tested water pumps 20 can be turned on and off simultaneously.
203rd, when the opening and closing number of each tested water valve is equal to preset times, whether its sealing is detected
Meet preset requirement, if it seals sexual satisfaction preset requirement, then it represents that the tested water valve is qualified.
Wherein, the preset times can be 10000 times, and the preset requirement can be on water in machinery industry standard
The sealing requirements of valve, can be to being tested water when the opening and closing number of each tested water valve 10 of control reaches 10000 times
The sealing of valve 10 is detected, and judges whether the sealing of the tested water valve 10 after 10000 switch tests meets machine
Sealing requirements in tool professional standard on water valve, if satisfied, then representing that the tested water valve 10 is qualified, it may apply to water cooling
In heat management system, otherwise, then it can not be applied in water cooling management system, so as to ensure that the use longevity of water cooling heat management system
Life.
204th, when the opening and closing time of each tested water pump being equal to the first preset time, detecting its bearing is
Whether no energy smooth rotation, and its water seal leak, if the bearing energy smooth rotation, and the water seal No leakage, then it represents that
The tested water pump is qualified.
Wherein, first preset time can be 500 hours, control each tested water pump 20 continuously alternately open and
When closing 500 hours, can detect the rotating shaft of each tested water pump 20 after continuous alternately opening and closing in 500 hours is
No smoothly to rotate, whether water seal can leak, if rotating shaft can also be rotated smoothly, the sealing of water seal is good
No leakage, then it represents that the tested water pump 20 is qualified, may apply in water cooling heat management system, otherwise, then can not be applied to water
In cold management system, so as to ensure that the service life of water cooling heat management system.
Another durability test method provided in an embodiment of the present invention, using foregoing test system to water pump and water valve
Durability test is carried out, when being tested, tested water pump can be connected to the other end and the second main line of the 3rd pipeline
The other end, multiple tested water valves are connected to it is corresponding between each first bye-pass and each second bye-pass, and
Control multiple tested water valves continuously alternately to open and close by control unit, and make at least one in multiple tested water valves
In opening, to ensure that the current in pipeline are unimpeded, meanwhile, control tested water pump continuously alternately to open and close, you can real
Carried out while being now tested water pump and multiple tested water valve durability tests.Compared with prior art, the embodiment of the present invention provides
Technical scheme, realize using a test system to complete the purpose of the durability test of water pump and water valve, reduce into
This；Meanwhile the purpose that the durability test for also achieving tested water pump and tested water valve can be carried out simultaneously, moreover, it is also possible to
The durability test of multiple tested water valves is once completed, effectively increases operating efficiency.
With reference to Fig. 1 and with reference to figure 4, the embodiment of the present invention additionally provides a kind of performance test methods, for above-mentioned test
System, this method include：
301st, multiple tested water valves are controlled to be in opening.
Wherein, when carrying out the performance test of tested water pump 20, multiple tested water valves 10 are controlled to be in opening, with
Ensure that fluid can be with smooth circulation, so as to ensure normally entering for the tested performance test of water pump 20 in the whole loop of test system
OK.
302nd, by the flow sensor and the regulation tank entry and the pressure regulator valve of outlet, the tested water is obtained
Multiple different flow values of pump.
303rd, by the first pressure sensor and the second pressure sensor, the tested water pump is obtained each
The pressure difference value of inlet and outlet under the flow value；
Wherein, it can be non-adjustable fast water pump or adjustable speed water pump to be tested water pump 20.If tested water pump 20 is adjustable speed water
Pump, during adjustable speed testing water pump, it is necessary to test complete water pump dutycycle be 20%, 30%, 40%, 50%,
60%th, 70%, 80%, the 90%, performance curve under 100% 9 kind of operating mode；Before experiment is carried out, it is thus necessary to determine that every kind of dutycycle shape
The peak flow values that water pump can reach under state, the peak flow values are set to the test point 1 under the dutycycle state, further according to this
Peak flow values under dutycycle state, it is determined that 6 test points (test point 1, test under the dutycycle including the test point
Point 2, test point 3, test point 4, test point 5 and test point 6, wherein, test point 1 be flow maximum, test point 6 for flow most
Small value, as 0).Specifically test process can be：
Step 1: the dutycycle of tested water pump 20 is arranged to 20%；
Step 2: the pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, makes the flow in test system loop be in most
Big value, the flow value are the flow value of test point 1, and according to the flow value to determine dutycycle be 20% state when, remaining 5 are surveyed
The flow value of pilot；
Step 3: the pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, it is test point 1 to make test system loop flow
Flow value, after stability of flow, continue 10s, record first pressure sensor 2 and second pressure sensor 3 in test loop
The pressure value at place；
Step 4: the pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, it is test point 2 to make test system loop flow
Flow value, after stability of flow, continue 10s, record first pressure sensor 2 and second pressure sensor 3 in test loop
The pressure value at place；
The concrete operation method of step 5-step 8 is similar with step 3 or step 4, only by the test point 1 in loop or
Test point 2 is changed to the flow value of test point 3, test point 4, test point 5 and test point 6.
Step 9: after step 2~step 7 to be done, the dutycycle of tested water pump 20 is set as 30%, repeat step
Two-step 8；Dutycycle is 40%, 50%, 60%, 70%, 80%, 90% and 100% specific testing procedure and duty
It is similar than for after 20% 30%, after adjusting dutycycle, repeat the above steps.
It should be noted that：Adjustable speed water pump is when dutycycle is 80%-100% state, in test system loop
Flow maximum may indifference, testing experiment only needs to proceed to minimum duty cycle state in maximum stream flow indifference i.e.
Can.
If tested water pump 20 is adjustable speed water pump, specific test process can be：
Step 1: the pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, makes the flow in test system loop be in most
Big value, flow value of the flow value as test point 1, and the tested performance curve measurement process of water pump 20 is determined according to the flow value
In required for remaining 5 test point flow value, wherein, minimum test point be test point 6 flow value be 0, this 6 test
Point is labeled as test point 1- test points 6；
Step 2：Pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, make the flow value in test system loop to survey
The flow value of pilot 1, after stability of flow, continue 10s, record first pressure sensor 2 in test loop and passed with second pressure
The pressure value that sensor 3 is collected；
Step 3：Pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, make the flow value in test system loop to survey
The flow value of pilot 2, after stability of flow, continue 10s, record first pressure sensor 2 in test loop and passed with second pressure
Pressure value at sensor 3；
The concrete operation method of step 4-step 8 is similar with step 2 or step 3, only by test point 1 or test point 2
Flow value be changed to the flow value of test point 3, test point 4, test point 5 and test point 6, so as to obtain the 6 of tested water pump 20
Individual flow value, repeats the above steps.
304th, according to the flow value and the pressure difference value, the flow-pressure differential curve of the tested water pump is obtained so that
Operating personnel judge whether the performance of the tested water pump meets the requirements by the flow-pressure differential curve.
A kind of performance test methods provided in an embodiment of the present invention, performance survey is carried out to water pump using foregoing test system
Tested water pump, when being tested, can be connected to the other end of the 3rd pipeline and the other end of the second main line, will be more by examination
Individual tested water valve is connected to accordingly between each first bye-pass and each second bye-pass, opens all tested water
Valve, to ensure that the current in pipeline are unimpeded, you can entered by flow sensor, first pressure sensor and second pressure sensor
The performance test of the tested water pump of row.Technical scheme provided in an embodiment of the present invention, realize using a test system to complete
The purpose of the durability test of the performance test of water pump and water pump and water valve, reduces cost；Meanwhile also achieve tested water
The purpose that the durability test of pump and tested water valve can be carried out simultaneously, moreover, it is also possible to once complete multiple tested water valves
Durability test, effectively increase operating efficiency.
With reference to Fig. 1 and with reference to figure 5, the embodiment of the present invention additionally provides the performance test methods of another test system, should
For above-mentioned test system, this method includes：
401st, multiple tested water valves are controlled to be in opening.
Wherein, before the performance test of tested water pump 20 is carried out, multiple tested water valves 10 are controlled to be in opening, with
Ensure that fluid can be with smooth circulation, so as to ensure normally entering for the tested performance test of water pump 20 in the whole loop of test system
OK.
402nd, one in multiple tested water pumps is controlled to be in opening.
Specifically, the other end of the second main line 7 can be communicated with multiple 3rd bye-passes 9 in the test system；The
Three pipelines can include the 3rd main line 13 and multiple 4th bye-passes 14 connected with the one end of the 3rd main line 13, the 3rd supervisor
The other end on road 13 connects with outlet 11；It is used to connect described in one between each 3rd bye-pass 9 and each 4th bye-pass 14
Tested water pump 20, make multiple tested water pumps 20 in parallel；First pressure sensor 2 is arranged on the 3rd main line 13, that is to say, that
In the test system can multiple tested water pumps 20 in parallel, to realize the purpose that multiple tested water pumps 20 are carried out with performance tests,
Further increase operating efficiency.
When being parallel with multiple tested water pumps 20 in test system, before the test begins, multiple tested water pumps can be controlled
One in 20 is in opening, meanwhile, other place bye-passes of tested water pump 20 can be made to be in lockup state and (specifically may be used
To be arranged on the valve on the 3rd bye-pass 9 by closing to realize described lockup state), that is to say, that to being tested water
When pump 20 carries out performance test, only one in multiple tested water pumps 20 should be tested, so as to prevent tested water pump 20
Test data is influenceed by other bye-pass flows or pressure, ensure that the accuracy of the tested test data of water pump 20.
403rd, by the flow sensor and the regulation entrance 12 of water tank 1 and the pressure regulator valve of outlet 11, it is in
Multiple different flow values of the tested water pump of opening.
404th, by the first pressure sensor and the second pressure sensor, the institute being under opening is obtained
State the pressure difference value of inlet and outlet of the tested water pump under each flow value；
Wherein, it can be non-adjustable fast water pump or adjustable speed water pump to be tested water pump 20.If tested water pump 20 is adjustable speed water
Pump, during adjustable speed testing water pump, it is necessary to test complete water pump dutycycle be 20%, 30%, 40%, 50%,
60%th, 70%, 80%, the 90%, performance curve under 100% 9 kind of operating mode；Before experiment is carried out, it is thus necessary to determine that every kind of dutycycle shape
The peak flow values that water pump can reach under state, the peak flow values are set to the test point 1 under the dutycycle state, further according to this
Peak flow values under dutycycle state, it is determined that 6 test points (test point 1, test under the dutycycle including the test point
Point 2, test point 3, test point 4, test point 5 and test point 6, wherein, test point 1 be flow maximum, test point 6 for flow most
Small value, as 0).Specifically test process can be：
Step 1: the dutycycle of tested water pump 20 is arranged to 20%；
Step 2: the pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, makes the flow in test system loop be in most
Big value, the flow value are the flow value of test point 1, and according to the flow value to determine dutycycle be 20% state when, remaining 5 are surveyed
The flow value of pilot；
Step 3: the pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, it is test point 1 to make test system loop flow
Flow value, after stability of flow, continue 10s, record first pressure sensor 2 and second pressure sensor 3 in test loop
The pressure value at place；
Step 4: the pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, it is test point 2 to make test system loop flow
Flow value, after stability of flow, continue 10s, record first pressure sensor 2 and second pressure sensor 3 in test loop
The pressure value at place；
The concrete operation method of step 5-step 8 is similar with step 3 or step 4, only by the test point 1 in loop or
Test point 2 is changed to the flow value of test point 3, test point 4, test point 5 and test point 6.
Step 9: after step 2~step 7 to be done, the dutycycle of tested water pump 20 is set as 30%, repeat step
Two-step 8；Dutycycle is 40%, 50%, 60%, 70%, 80%, 90% and 100% specific testing procedure and duty
It is similar than for after 20% 30%, after adjusting dutycycle, repeat the above steps.
It should be noted that：Adjustable speed water pump is when dutycycle is 80%-100% state, in test system loop
Flow maximum may indifference, testing experiment only needs to proceed to minimum duty cycle state in maximum stream flow indifference i.e.
Can.
If tested water pump 20 is adjustable speed water pump, specific test process can be：
Step 1: the pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, makes the flow in test system loop be in most
Big value, flow value of the flow value as test point 1, and the tested performance curve measurement process of water pump 20 is determined according to the flow value
In required for remaining 5 test point flow value, wherein, minimum test point be test point 6 flow value be 0, this 6 test
Point is labeled as test point 1- test points 6；
Step 2：Pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, make the flow value in test system loop to survey
The flow value of pilot 1, after stability of flow, continue 10s, record first pressure sensor 2 in test loop and passed with second pressure
The pressure value that sensor 3 is collected；
Step 3：Pressure regulator valve at the entrance 12 of regulating tank 1 and outlet 11, make the flow value in test system loop to survey
The flow value of pilot 2, after stability of flow, continue 10s, record first pressure sensor 2 in test loop and passed with second pressure
Pressure value at sensor 3；
The concrete operation method of step 4-step 8 is similar with step 2 or step 3, only by test point 1 or test point 2
Flow value be changed to the flow value of test point 3, test point 4, test point 5 and test point 6, so as to obtain the 6 of tested water pump 20
Individual flow value, repeats the above steps.
405th, according to the flow value and the pressure difference value, the flow-pressure differential curve of the tested water pump is obtained so that
Operating personnel judge whether the performance of the tested water pump meets the requirements by the flow-pressure differential curve.
A kind of performance test methods provided in an embodiment of the present invention, performance survey is carried out to water pump using foregoing test system
Tested water pump, when being tested, can be connected to the other end of the 3rd pipeline and the other end of the second main line, will be more by examination
Individual tested water valve is connected to accordingly between each first bye-pass and each second bye-pass, opens all tested water
Valve, to ensure that the current in pipeline are unimpeded, you can entered by flow sensor, first pressure sensor and second pressure sensor
The performance test of the tested water pump of row.Technical scheme provided in an embodiment of the present invention, realize using a test system to complete
The purpose of the durability test of the performance test of water pump and water pump and water valve, reduces cost；Meanwhile also achieve tested water
The purpose that the durability test of pump and tested water valve can be carried out simultaneously, moreover, it is also possible to once complete multiple tested water valves
Durability test, effectively increase operating efficiency.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (8)
- A kind of 1. test system, it is characterised in that including：Water tank, the first pipeline, the second pipeline, the 3rd pipeline, first pressure sensor, second pressure sensor, flow sensor；The water tank has outlet and entrance；First pipeline includes the first main line and multiple first bye-passes connected with described first main line one end, described The other end of first main line connects with the entrance；Second pipeline includes the second main line and multiple second bye-passes connected with described second main line one end, each It is used to connect a tested water valve between first bye-pass and each second bye-pass, makes multiple tested water valves simultaneously Connection；One end of 3rd pipeline and the outlet, the other end of the 3rd pipeline and second main line it is another One end is used to connect tested water pump；The first pressure sensor is arranged on the 3rd pipeline, and the second pressure sensor is arranged at second master On pipeline, the flow sensor is arranged on first main line；Control unit, described control unit is used to control multiple tested water valves continuously alternately to open and close, and makes multiple At least one in the tested water valve is in opening, and the control tested water pump continuously alternately opens and closes.
- 2. a kind of durability test method, for the test system described in claim 1, it is characterised in that control is multiple described Tested water valve continuously alternately opens and closes, and at least one in multiple tested water valves is in opening；The tested water pump is controlled continuously alternately to open and close；When the opening and closing number of each tested water valve is equal to preset times, detect whether its sealing meets to preset It is required that if it seals sexual satisfaction preset requirement, then it represents that the tested water valve is qualified.When the opening and closing time of the tested water pump being equal to the first preset time, detect whether its bearing can steadily turn Move, and whether its water seal leaks, if the bearing energy smooth rotation, and the water seal No leakage, then it represents that the tested water Pump is qualified.
- 3. according to the method for claim 2, it is characterised in that the multiple tested water valves of control are continuously alternately opened And closing, and at least one in multiple tested water valves is included in opening：The each tested water valve of control continuously alternately opens the second preset time and closes the 3rd preset time, and at least two One in the tested water valve is opened the 4th preset time relative to another delay；Wherein, the 3rd preset time is less than second preset time, and it is pre- that the 4th preset time is more than the described 3rd If the time is less than second preset time.
- 4. according to the method for claim 2, it is characterised in that the other end of the second main line described in the test system It is communicated with multiple 3rd bye-passes；3rd pipeline includes the 3rd main line and connected with described 3rd main line one end more Individual 4th bye-pass, the other end and the outlet of the 3rd main line；Each 3rd bye-pass and each institute State and be used between the 4th bye-pass connect a tested water pump, make multiple tested water pumps in parallel；The first pressure passes Sensor is arranged on the 3rd main line；The control tested water pump, which continuously replaces opening and closing, to be included：The each tested water pump of control continuously alternately opens and closes；Whether when the opening and closing time in the tested water pump is equal to the first preset time, detecting its bearing can be steady Rotate, and whether its water seal leaks, if the bearing energy smooth rotation, and the water seal No leakage, then it represents that it is described tested Water pump it is qualified including：Whether when the opening and closing time of each tested water pump being equal to the first preset time, detecting its bearing can be steady Rotate, and whether its water seal leaks, if the bearing energy smooth rotation, and the water seal No leakage, then it represents that it is described tested Water pump is qualified.
- 5. according to the method for claim 2, it is characterised in that the tested water pump is can not adjustable speed water pump；The control The tested water pump, which continuously replaces opening and closing, to be included：The tested water pump is controlled continuously alternately to open the 5th preset time with rated speed and close the 6th preset time, until The total time of opening and closing is first preset time.
- 6. according to the method for claim 2, it is characterised in that the tested water pump is adjustable speed water pump；The control institute Stating tested water pump, continuously alternately opening and closing include：First stage：Controlling the tested water pump, continuously alternately the 7th preset time of unlatching and closing the 8th are pre- with the first tachometer value If the time；Second stage：Controlling the tested water pump, continuously alternately the 9th preset time of unlatching and closing the tenth are pre- with the second tachometer value If the time；Wherein, the first stage and the second stage are alternately, pre- for described first up to total time alternately If the time.
- A kind of 7. performance test methods, for the test system described in claim 1, it is characterised in that including：Multiple tested water valves are controlled to be in opening；By the flow sensor and the regulation tank entry and the pressure regulator valve of outlet, the multiple of the tested water pump are obtained Different flow value；By the first pressure sensor and the second pressure sensor, the tested water pump is obtained in each flow The pressure difference value of inlet and outlet under value；According to the flow value and the pressure difference value, the flow-pressure differential curve of the tested water pump is obtained.
- 8. according to the method for claim 7, it is characterised in that the other end of the second main line described in the test system It is communicated with multiple 3rd bye-passes；3rd pipeline includes the 3rd main line and connected with described 3rd main line one end more Individual 4th bye-pass, the other end and the outlet of the 3rd main line；Each 3rd bye-pass and each institute State and be used between the 4th bye-pass connect a tested water pump, make multiple tested water pumps in parallel；The first pressure passes Sensor is arranged on the 3rd main line；It is described by the flow sensor and the regulation tank entry and the pressure regulator valve of outlet, obtain the tested water pump Before multiple different flow values, methods described also includes：One in multiple tested water pumps is controlled to be in opening；It is described by the flow sensor and the regulation tank entry and the pressure regulator valve of outlet, obtain the tested water pump Multiple different flow values include：By the flow sensor and the regulation tank entry and the pressure regulator valve of outlet, obtain described in opening Multiple different flow values of tested water pump；It is described by the first pressure sensor and the second pressure sensor, obtain the tested water pump each described The pressure difference value of inlet and outlet under flow value includes：By the first pressure sensor and the second pressure sensor, the tested water pump in opening is obtained The pressure difference value of inlet and outlet under each flow value.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141865A (en) * | 2018-06-20 | 2019-01-04 | 广东万家乐燃气具有限公司 | A kind of water valve water frequency relation detection device and method |
| CN110886705A (en) * | 2018-09-11 | 2020-03-17 | 宁波方太厨具有限公司 | Method for testing water pumping performance of water pump of steam box |
| CN111811798A (en) * | 2020-06-30 | 2020-10-23 | 徐州晶睿半导体装备科技有限公司 | Waterway detection system and waterway detection method |
| CN112664441A (en) * | 2020-12-09 | 2021-04-16 | 江苏大学镇江流体工程装备技术研究院 | Multifunctional water pump test board |
| CN114705462A (en) * | 2022-02-28 | 2022-07-05 | 正帆百泰(苏州)科技有限公司 | Testing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2645618B2 (en) * | 1991-03-14 | 1997-08-25 | 山武ハネウエル株式会社 | Automatic inspection equipment for fire extinguishing equipment |
| JP2000283057A (en) * | 1998-06-16 | 2000-10-10 | Kichinosuke Yamamoto | Reaction load device |
| JP2001271761A (en) * | 2001-02-13 | 2001-10-05 | Kichinosuke Yamamoto | Pump effective power deciding method and pump effective power testing method |
| CN201496247U (en) * | 2009-05-08 | 2010-06-02 | 广西玉柴机器股份有限公司 | Automatic test system of water pump test bench |
| CN101750194A (en) * | 2010-01-18 | 2010-06-23 | 北京艾迪西暖通科技有限公司 | Test platform for comprehensive performance of pressure-reducing valve |
| CN102795727A (en) * | 2012-08-28 | 2012-11-28 | 中国人民解放军军事医学科学院卫生装备研究所 | Hydrodynamic-cavitation enhanced water treating apparatus |
| CN206035784U (en) * | 2016-08-29 | 2017-03-22 | 刘洪林 | Water pump detecting device |
-
2017
- 2017-09-07 CN CN201710799471.7A patent/CN107781155B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2645618B2 (en) * | 1991-03-14 | 1997-08-25 | 山武ハネウエル株式会社 | Automatic inspection equipment for fire extinguishing equipment |
| JP2000283057A (en) * | 1998-06-16 | 2000-10-10 | Kichinosuke Yamamoto | Reaction load device |
| JP2001271761A (en) * | 2001-02-13 | 2001-10-05 | Kichinosuke Yamamoto | Pump effective power deciding method and pump effective power testing method |
| CN201496247U (en) * | 2009-05-08 | 2010-06-02 | 广西玉柴机器股份有限公司 | Automatic test system of water pump test bench |
| CN101750194A (en) * | 2010-01-18 | 2010-06-23 | 北京艾迪西暖通科技有限公司 | Test platform for comprehensive performance of pressure-reducing valve |
| CN102795727A (en) * | 2012-08-28 | 2012-11-28 | 中国人民解放军军事医学科学院卫生装备研究所 | Hydrodynamic-cavitation enhanced water treating apparatus |
| CN206035784U (en) * | 2016-08-29 | 2017-03-22 | 刘洪林 | Water pump detecting device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141865A (en) * | 2018-06-20 | 2019-01-04 | 广东万家乐燃气具有限公司 | A kind of water valve water frequency relation detection device and method |
| CN110886705A (en) * | 2018-09-11 | 2020-03-17 | 宁波方太厨具有限公司 | Method for testing water pumping performance of water pump of steam box |
| CN110886705B (en) * | 2018-09-11 | 2021-04-16 | 宁波方太厨具有限公司 | Method for testing water pumping performance of water pump of steam box |
| CN111811798A (en) * | 2020-06-30 | 2020-10-23 | 徐州晶睿半导体装备科技有限公司 | Waterway detection system and waterway detection method |
| CN112664441A (en) * | 2020-12-09 | 2021-04-16 | 江苏大学镇江流体工程装备技术研究院 | Multifunctional water pump test board |
| CN114705462A (en) * | 2022-02-28 | 2022-07-05 | 正帆百泰(苏州)科技有限公司 | Testing device |
| CN114705462B (en) * | 2022-02-28 | 2023-10-20 | 正帆百泰(苏州)科技有限公司 | Testing device |
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| CN107781155B (en) | 2019-03-26 |
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