CN108458859A - A kind of discharge coefficient test system and method - Google Patents
A kind of discharge coefficient test system and method Download PDFInfo
- Publication number
- CN108458859A CN108458859A CN201711480491.4A CN201711480491A CN108458859A CN 108458859 A CN108458859 A CN 108458859A CN 201711480491 A CN201711480491 A CN 201711480491A CN 108458859 A CN108458859 A CN 108458859A
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- 238000012360 testing method Methods 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims description 8
- 238000007664 blowing Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010998 test method Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 8
- 238000010009 beating Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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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
Abstract
The invention discloses a kind of discharge coefficients to test system, it includes work air source, inflation circuit, test loop, output loop, timer and controller, it includes loading line and first switch to inflate circuit, test loop includes test pipeline and second switch and flow sensor, loading line and the both ends for testing pipeline are respectively connected to the first end of work air source and output loop, product to be measured accesses the second end of output loop, and pressure sensor is equipped on the output loop；The flow sensor and pressure sensor are connected to controller；The first switch and the second switch is connected to controller；The timer is electrically connected with controller.The invention also discloses a kind of discharge coefficient test methods.High production capacity high reliability and high efficiency may be implemented in the present invention, greatly reduces to artificial dependence, has great guarantee to the test quality of product.
Description
Technical field
The present invention relates to technical field of nondestructive testing, specially a kind of discharge coefficient tests system and method.
Background technology
The valves such as common tap in daily life are a kind of switches of fluid, and fluid is flowed out by this valve, because
This, the negotiability size of valve is to have direct influence on the discharge of fluid.Valve needs to carry out flow spy in production
The test of property.The flow for flowing through valve depends on the aperture of valve and the pressure of fluid, and in the case of most, people are
A stable Fluid pressure is provided to valve, judges the negotiability of valve by measuring the flow of fluid.For example, for
A valves are certified products when flowing through the flow of this valve more than 10 liters/min when giving the air pressure of its front end 10kPa；Work as valve
Under given 10kPa air pressures, the flow actually flowed through is then judged as defective work less than 10 liters/min, illustrates valve internal
There are flaws for latus rectum, hinder the circulation of fluid, influence the use of user.
In practical implementation, the measurement to the negotiability of this kind of product is by manually carrying out testing and control, wrapping
It is accurate at the time of including artificial valve oneself of oneself opening and control duration of ventilation, and the numerical value of flowmeter is read by manual control
Property receives prodigious restriction.
Invention content
For overcome the deficiencies in the prior art, one of the objects of the present invention is to provide a kind of discharge coefficients to test system,
Automatically the discharge coefficient of product to be measured can accurately be measured.
The second object of the present invention is to provide a kind of discharge coefficient test method, can be automatically to the flow of product to be measured
Coefficient is accurately measured.
One of to achieve the above object, the present invention provides the following technical solutions：
A kind of discharge coefficient test system, is tested for the discharge coefficient to product to be measured comprising work air source,
Inflation circuit, test loop, output loop, timer and controller, the inflation circuit include loading line and are installed on
First switch on loading line, the test loop include test pipeline and be installed on testing tube road second switch and
Flow sensor, the loading line and the both ends for testing pipeline respectively connect with the first end of work air source and output loop
Logical, the product to be measured accesses the second end of output loop, and pressure sensor is equipped on the output loop；The flow passes
Sensor and pressure sensor are connected to controller, for the flow information detected and pressure information to be sent to controller；
The first switch and the second switch is connected to controller, for inflating beating for circuit and test loop by controller control
It is open and close；The timer is electrically connected with controller, the closing time for recording first switch and the second switch.
Further, the first switch and the second switch is respectively the first solenoid valve and second solenoid valve.
Further, the controller is programmable logic controller (PLC).
To achieve the above object two, the present invention provides the following technical solutions：
A method of discharge coefficient test is carried out using the discharge coefficient test system of one of the object of the invention comprising
Following steps：
Inflate starting step：Controller controls first switch and is closed, and inflates loop works, into inflation link；
Inflate judgment step：When first switch closing time reaches first time setting value, judge that pressure sensor is examined
Whether the blowing pressure value of survey is within the scope of design of pressure, if test starting step is being executed, if not, sending out out
Mistake notice；
Test starting step：Controller controls first switch and disconnects, and second switch is closed, test loop work, into survey
Test ring section；
Test starting step：When second switch closing time reaches the second time setting value, judge that flow sensor is examined
Whether the test flow value of survey is in flow value setting range, if product to be measured is qualified, if not, product to be measured is not
It is qualified；Or the blowing pressure value of the test flow value and pressure sensor detection detected by flow sensor carries out binary pass
Through transport calculation carries out judging whether product to be measured is qualified.
Compared with prior art, inventive flow coefficient test system and method, may be implemented high production capacity high reliability and
High efficiency, as long as operating personnel send out enabling signal, discharge coefficient test system can be automatically performed survey before the deadline
Examination, and record the pressure of test and flow and make acceptance or rejection judgement, it greatly reduces to artificial dependence, to production
The test quality of product has great guarantee.Each product is all to pass through the inflation of same time under the same gas supply environment
Amount compares and analyzes, data accuracy is high by the test of same time in extraction of same moment test result.
Description of the drawings
Fig. 1 is the structural schematic diagram that present pre-ferred embodiments discharge coefficient tests system；
Fig. 2 is the fundamental diagram that present pre-ferred embodiments discharge coefficient tests system；
Fig. 3 is the flow chart of present pre-ferred embodiments discharge coefficient test method.
In figure：10, work air source；20, circuit is inflated；21, the first solenoid valve；30, test loop；31, flow sensor；
32, second solenoid valve；40, output loop；41, pressure sensor；50, product to be measured；60, controller；70, timer；80, it shows
Show device.
Specific implementation mode
In the following, in conjunction with attached drawing and specific implementation mode, the present invention is described further, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
Discharge coefficient tests system, is tested for the discharge coefficient to product 50 to be measured, and discharge coefficient is valve (example
Such as tap) and regulating valve product Quality Detection parameter.Discharge coefficient refers in the unit interval, in test condition middle pipe
The pressure that road is kept constant, pipeline medium flow through the volume flow or mass flow of valve, that is to say negotiability.Flow
The pressure loss that coefficient value is bigger when illustrating fluid flow through valve door is smaller.
It please refers to shown in Fig. 1, a kind of discharge coefficient test system comprising work air source 10, is tested back inflation circuit 20
Road 30, output loop 40, timer 70 and controller 60, the inflation circuit 20 is including loading line and is installed on gas tube
The first switch of road, the test loop 30 include test pipeline and the second switch and flow that are installed on testing tube road
Sensor 31, preferably between flow sensor 31 and second switch, loading line and test pipeline are equivalent to parallel-connection structure, the two
Air inlet with work air source 10 gas outlet be connected to, the gas outlet of the two (is made of) with output loop 40 output pipe
First end connection, product 50 to be measured accesses the second end of output loop 40, pressure sensing is equipped on the output loop 40
Device 41.
It please refers to shown in Fig. 2, flow sensor 31 and pressure sensor 41 are connected to controller 60, for that will detect
Flow information and pressure information be sent to controller 60, controller 60 is by flow information and pressure information and pre-stored stream
Magnitude setting range and design of pressure range are compared, obtain product to be measured 50 whether qualified result.Controller 60 can
With using programmable logic controller (PLC) (PLC), naturally it is also possible to be microcontroller, FPGA etc..
The first switch and the second switch can be respectively adopted the first solenoid valve 21 and second solenoid valve 32, first switch and
Second switch is connected to controller 60, for beating on and off by the control of controller 60 inflation circuit 20 and test loop 30
It closes.When first switch is closed, inflation circuit 20 is opened, into the detection of inflation link, at this point, second switch needs to disconnect；
When second switch is closed, test loop 30 is opened, into the detection of test session, at this point, first switch needs to disconnect.Timing
Device 70 is electrically connected with controller 60, the closing time for recording first switch and the second switch, that is, obtains inflation link
The testing time of inflationtime and test session, timer 70 can be the clock chips inside controller 60, can also be outer
The increased timing device in portion, timer 70 can be one, can also be by two timers record respectively inflationtime and
Testing time.
In addition, discharge coefficient test system can also include display 80 and voice prompting device, display 80 and voice
Prompting device is electrically connected with controller 60, and display 80 can be to pressure sensor 41, flow sensor 31, timer 70
Output result is shown, can also show the judging result in gas replenishment process and final qualified or not judging result, language
Sound prompting device can quote judging result and final qualified or not judging result in gas replenishment process.
It please refers to shown in Fig. 3, the test method of above-mentioned discharge coefficient test system includes the following steps：
1st step：First switch is controlled by controller 60 to be closed, opens inflation circuit 20, into inflation link.
2nd step：Record inflationtime by timer 70, i.e. first switch closing time, upon inflation between reach first
When time setting value, the blowing pressure value that record pressure sensor 41 detects is set at the first time if inflationtime is not up to
Value then continues through timer 70 and records inflationtime, until reaching first time setting value.First time setting value can
To need to set according to inflation.
3rd step：It is compared by the blowing pressure value and design of pressure range, judges whether that the 4th step can be executed
Operation, if the blowing pressure value within the scope of design of pressure, i.e., the blowing pressure value is not less than the pressure of design of pressure range
Lower limit, and no more than the upper pressure limit of design of pressure range, then the 4th step can be executed, conversely, sending out error notice, i.e.,
The blowing pressure value at this time is not enough to execute subsequent test session.Send out error notice can be shown by display 80 or/
It is carried out with the mode that voice prompting device is quoted.
Why it is arranged before carrying out test session to product 50 to be measured and inflates link, its object is to：In this of inflation
It is a moment, very big by inflating the air-flow that circuit 20 is poured into product 50 to be measured, if being directly connected to the progress of flow sensor 31
It measures, then the serious excess of flow sensor 31 can be caused even to damage.
4th step：First switch is controlled by controller 60 to disconnect, second switch is closed, that is, is inflated circuit 20 and closed, test
Circuit 30 is opened, into test session.
5th step：By 70 recording test time of timer, i.e. second switch closing time, when tested between reach second
When time setting value, the test flow value that flow sensor 31 detects is recorded, if the testing time is not up to the setting of the second time
Value, then continue through 70 recording test time of timer, until reaching the second time setting value.Second time setting value can
To need to set according to test.
It is flow and pressure because of moment why in inflation link and test session setting inflationtime and testing time
There may be certain errors for force value, because of flow and pressure value and default phase by obtaining the unit interval in a period of time
Data to be closed to be compared so that test is more accurate, meanwhile, according to setting inflationtime and testing time, institute can also be facilitated
There is similar product to carry out lateral comparison.
6th step：It is compared by testing flow value and flow value setting range, judges whether product 50 to be measured is qualified.
If testing flow value in flow value setting range, that is, the flux lower limit that flow value is not less than flow value setting range is tested,
And no more than the flow rate upper limit of flow value setting range, then product 50 to be measured is qualified, sends out qualified notice, record test knot
Fruit executes the 7th step later.
It is more easily judgment mode to be compared above by test flow value and flow value setting range, certainly,
In order to enable test is more accurate, the number of degrees of pressure sensor 41 are can be combined with, i.e., in 6 step, pass through flow sensor
The test flow value for obtaining test session obtains the test pressure value of test session by pressure sensor, then judgment mode
It is below any：
A, test flow value is in flow value setting range, and test pressure value is in test pressure value setting range,
Test pressure value setting range is also to prestore；
B, bivariate table is prestored, bivariate table records test pressure value and tests the correspondence of flow value, i.e., according to it
In one actual measured value whether within a preset range check another actual measured value, for example, it is assumed that being deposited in bivariate table
It is 9-11kPa in a shelves of test pressure value, and corresponding flow rate test value is 9.5-10.5 liters/min, then working as reality
When the test pressure value of measurement is 10kPa, it is assumed that the flow rate test value actually measured is 9.8 liters/min, then the product to be measured closes
Lattice, and if the flow rate test value actually measured is 11 liters/min, the product to be measured is unqualified.
C, it according to test pressure value and tests the relation formula of flow value and calculates, Q=[H/ (SL)] ^ (1/2), wherein Q is
Flow value, H are pressure value, and S is pipeline resistivity, and L is pipe range, and it is test pipeline and output that the pipe range in this programme, which can be approximately considered,
The sum of pipeline, meanwhile, give result of calculation certain range, for example, Q=[H/ (SL)] ^ (1/2) ± 1, passes through practical survey in this way
The test pressure value of amount converses the range for theoretically testing flow value, is then compared again with the test flow value actually measured
It is right.
The mode for sending out qualified notice can be that the mode that display 80 is shown or/and voice prompting device is quoted carries out, and remember
The test result of record can be carried out by the result that display 80 is shown, can also be pressure sensor 41 and flow sensor
31 reading carries out., whereas if test flow value sends out unqualified notice, sends out and do not conform to not in flow value setting range
Lattice notice can carry out in such a way that display 80 is shown or/and voice prompting device is quoted.
7th step：Test loop 30 is closed, system enters exhaust condition, and test terminates.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (4)
1. a kind of discharge coefficient tests system, tested for the discharge coefficient to product to be measured, it is characterised in that：It includes
Work air source, inflation circuit, test loop, output loop, timer and controller, the inflation circuit include loading line with
And it is installed on the first switch on loading line, the test loop includes testing pipeline and being installed on the of testing tube road
The both ends of two switches and flow sensor, the loading line and test pipeline respectively with work air source and output loop the
One end is connected to, the second end of the product access output loop to be measured, and pressure sensor is equipped on the output loop；It is described
Flow sensor and pressure sensor are connected to controller, for the flow information detected and pressure information to be sent to control
Device processed；The first switch and the second switch is connected to controller, for controlling inflation circuit by controller and testing back
The opening and closing on road；The timer and controller are electrically connected, when closure for recording first switch and the second switch
Between.
2. discharge coefficient according to claim 1 tests system, it is characterised in that：The first switch and the second switch point
It Wei not the first solenoid valve and second solenoid valve.
3. discharge coefficient according to claim 1 or 2 tests system, it is characterised in that：The controller is programmable patrols
Collect controller.
4. a kind of side carrying out discharge coefficient test using discharge coefficient as described in any one of claims 1-3 test system
Method, it is characterised in that：It includes the following steps：
Inflate starting step：Controller controls first switch and is closed, and inflates loop works, into inflation link；
Inflate judgment step：When first switch closing time reaches first time setting value, pressure sensor detection is judged
Whether the blowing pressure value is within the scope of design of pressure, if test starting step is being executed, if not, it is logical to send out error
Know；
Test starting step：Controller controls first switch and disconnects, and second switch is closed, test loop work, into test wrapper
Section；
Test starting step：When second switch closing time reaches the second time setting value, flow sensor detection is judged
Flow value is tested whether in flow value setting range, if product to be measured is qualified, if not, product to be measured is unqualified；
Or the test flow value detected by flow sensor carries out binary with the blowing pressure value that pressure sensor detects and is associated with fortune
Calculation carries out judging whether product to be measured is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711480491.4A CN108458859A (en) | 2017-12-29 | 2017-12-29 | A kind of discharge coefficient test system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711480491.4A CN108458859A (en) | 2017-12-29 | 2017-12-29 | A kind of discharge coefficient test system and method |
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| Publication Number | Publication Date |
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| CN108458859A true CN108458859A (en) | 2018-08-28 |
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| CN201711480491.4A Pending CN108458859A (en) | 2017-12-29 | 2017-12-29 | A kind of discharge coefficient test system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521349A (en) * | 2020-04-21 | 2020-08-11 | 博众精工科技股份有限公司 | Inflation and deflation control method, device and system, electronic equipment and medium |
| CN111751075A (en) * | 2020-06-09 | 2020-10-09 | 西安交通大学 | Method and device for measuring flow coefficient of channel of passenger plane pressurizing cabin |
| CN111947916A (en) * | 2020-07-30 | 2020-11-17 | 黄山双桦动林压缩机有限公司 | Variable displacement compressor flow sensor performance testing device and testing method thereof |
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| CN101140294A (en) * | 2006-09-05 | 2008-03-12 | 横河电机株式会社 | A method to evaluate a performance of a control valve and a system thereof |
| CN201335758Y (en) * | 2008-12-17 | 2009-10-28 | 北京冶核技术发展有限责任公司 | Wide-range micro-control leak detector |
| CN201417210Y (en) * | 2009-04-28 | 2010-03-03 | 上海袋式除尘配件有限公司 | Flow capacity testing device for impulse valve |
| CN101876593A (en) * | 2009-04-28 | 2010-11-03 | 上海袋式除尘配件有限公司 | Equipment for testing liquidity of pulse valve |
-
2017
- 2017-12-29 CN CN201711480491.4A patent/CN108458859A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140294A (en) * | 2006-09-05 | 2008-03-12 | 横河电机株式会社 | A method to evaluate a performance of a control valve and a system thereof |
| CN201335758Y (en) * | 2008-12-17 | 2009-10-28 | 北京冶核技术发展有限责任公司 | Wide-range micro-control leak detector |
| CN201417210Y (en) * | 2009-04-28 | 2010-03-03 | 上海袋式除尘配件有限公司 | Flow capacity testing device for impulse valve |
| CN101876593A (en) * | 2009-04-28 | 2010-11-03 | 上海袋式除尘配件有限公司 | Equipment for testing liquidity of pulse valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521349A (en) * | 2020-04-21 | 2020-08-11 | 博众精工科技股份有限公司 | Inflation and deflation control method, device and system, electronic equipment and medium |
| CN111521349B (en) * | 2020-04-21 | 2022-07-01 | 博众精工科技股份有限公司 | Inflation and deflation control method, device and system, electronic equipment and medium |
| CN111751075A (en) * | 2020-06-09 | 2020-10-09 | 西安交通大学 | Method and device for measuring flow coefficient of channel of passenger plane pressurizing cabin |
| CN111751075B (en) * | 2020-06-09 | 2021-11-02 | 西安交通大学 | Method and device for measuring flow coefficient of channel of passenger plane pressurizing cabin |
| CN111947916A (en) * | 2020-07-30 | 2020-11-17 | 黄山双桦动林压缩机有限公司 | Variable displacement compressor flow sensor performance testing device and testing method thereof |
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Address after: 510000 Room 106, Building 728 Kaichuang Avenue, Huangpu District, Guangzhou City, Guangdong Province Applicant after: UPTON AUTOMATION SYSTEMS (GUANGZHOU) Co.,Ltd. Address before: 510000 Room 102, G Block, Jingye Fourth Street, Yushu Industrial Park, Luogang District, Guangzhou City, Guangdong Province Applicant before: UPTON TECHNOLOGY Co.,Ltd. |
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Application publication date: 20180828 |