CN110132505A - A kind of photovoltaic connector microcrack zone equipment and its detection method - Google Patents
A kind of photovoltaic connector microcrack zone equipment and its detection method Download PDFInfo
- Publication number
- CN110132505A CN110132505A CN201910565368.5A CN201910565368A CN110132505A CN 110132505 A CN110132505 A CN 110132505A CN 201910565368 A CN201910565368 A CN 201910565368A CN 110132505 A CN110132505 A CN 110132505A
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- China
- Prior art keywords
- connector
- pressure
- valve
- photovoltaic
- solenoid valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
The invention discloses a kind of photovoltaic connector microcrack zone equipment and its detection methods, and wherein photovoltaic connector microcrack zone equipment includes the pneumatic supply, switch valve and connector being sequentially communicated by pipeline；Pipeline between the switch valve and connector is equipped with first pressure gauge；The connector is connect with photovoltaic connector to be measured.The present invention judges photovoltaic connector with the presence or absence of micro-crack by changing the pressure in tested photovoltaic connector, and by the variation of the numerical value of first pressure gauge under state of pressure keeping, and it is accurate but also easy to operate, low in cost not only to examine.
Description
Technical field
The present invention relates to a kind of field of connectors, more particularly, to a kind of photovoltaic connector microcrack zone equipment and its inspection
Survey method.
Background technique
Concatenation is realized by cable and connector between photovoltaic module, will be generated in photovoltaic module by cable and connector
Electric energy exports outward, and unlike general electric connector, requirement of the photovoltaic connector for leakproofness is very high, due to photovoltaic
Component is used for a long time outdoors, can face severe outdoor environment often, the leakproofness of photovoltaic connector is bad to lead to infiltration, leakage
If electricity, it will bring serious security risk.But at present during the photovoltaic connector of production, photovoltaic connector is past
It can not only be brought serious if these defective products put goods on the market toward the product that will appear invisible micro-crack
Security risk, or even fire can be caused, personal injury and property loss are caused, and have lost the prestige of producer.Therefore, light
It is particularly significant to lie prostrate connector microcrack zone, but it is existing at present detect photovoltaic connector there is no preferable detection device,
Existing detection device not only higher cost, and it is larger, so that testing cost greatly improves.
Summary of the invention
The purpose of the present invention is aiming at the problem that in the prior art without preferable detection device to detect photovoltaic connector
And provide a kind of photovoltaic connector microcrack zone equipment and its detection method.
Realizing the technical solution of the object of the invention is: a kind of photovoltaic connector microcrack zone equipment, including passes through pipeline
Pneumatic supply, switch valve and the connector being sequentially communicated；Pipeline between the switch valve and connector is equipped with first pressure gauge；
The connector is connect with photovoltaic connector to be measured.
It further include tee connector；Three ports of the tee connector by pipeline respectively with switch valve, connector
It is connected with first pressure gauge.
It further include pressure regulator valve；The pressure regulator valve is by piping connection between pneumatic supply and switch valve；On the pressure regulator valve
There is second pressure gauge by piping connection.
The switch valve is solenoid valve.
The first pressure gauge is digital display manometer.
It further include power supply；The power supply is used to power to solenoid valve and/or digital display manometer；The solenoid valve
Power supply circuit be equipped with for control solenoid valve opening and closing electromagnetic valve switch.
The output end of the power supply is additionally provided with the power switch whether powered for controlling power supply.
Above-mentioned photovoltaic connector testing methods for tiny crack, comprising the following steps:
S1: pressure regulator valve, solenoid valve, tee connector, connector and digital display manometer are got out；
S2: pressure regulator valve, solenoid valve, tee connector and connector are sequentially connected by pipeline, digital display manometer is passed through
Piping connection is in the remaining a port of tee connector, by second pressure gauge through piping connection on pressure regulator valve；
S3: pressure regulator valve is accessed into pneumatic supply, and solenoid valve and digital display manometer are connect into electricity；
S4: connector is connected on photovoltaic connector to be measured；
S5: opening pneumatic supply, observes second pressure gauge, and adjust the output pressure P of pressure regulator valve；
S6: opening solenoid valve, enters gas in tested photovoltaic connector；
S7: closing solenoid valve, observes the variation of numerical value shown on digital display manometer；
S8: judged tested photovoltaic connector with the presence or absence of micro-crack according to the variation of numerical value on digital display manometer.
To the adjusting of the output pressure of pressure regulator valve in the S5 specifically:
When pneumatic supply is negative pressure equipment, the output pressure P for adjusting pressure regulator valve is -1MPa≤P < 0MPa；
When pneumatic supply is positive airway pressure apparatus, the output pressure P for adjusting pressure regulator valve is 0MPa < P≤1MPa.
The tested photovoltaic connector of judgement in the S8 is with the presence or absence of micro-crack method particularly includes:
When pneumatic supply is positive airway pressure apparatus, solenoid valve is closed, after 5 seconds, decline of pressure > 5%~20% determines tested light
It lies prostrate on connector there are micro-crack, it is on the contrary then there is no micro-cracks；
When pneumatic supply is negative pressure equipment, solenoid valve is closed, after 5 seconds, pressure increase > 5%~20% determines tested light
It lies prostrate on connector there are micro-crack, it is on the contrary then there is no micro-cracks.
Using above-mentioned technical proposal, the present invention has the following beneficial effects: (1) present invention is by changing tested photovoltaic
Pressure in connector, and judge that photovoltaic connector whether there is by the variation of the numerical value of first pressure gauge under state of pressure keeping
Micro-crack, it is accurate but also easy to operate, low in cost not only to examine.
(2) present invention is provided with three-way connection, convenient for first pressure gauge to be connected to the pipe between switch valve and connector
On the road.
(3) present invention is provided with pressure regulator valve and second pressure gauge, convenient for controlling the pressure in tested photovoltaic connector, avoids
Test effect is influenced because pressure is excessive or too low.
(4) switch valve of the invention uses solenoid valve, operates more convenient.
(5) first pressure gauge of the invention uses digital display manometer, observes more intuitive.
(6) present invention is provided with power supply, is powered convenient for good to solenoid valve and digital display manometer.
(7) present invention is being provided with switch, more convenient to the control of solenoid valve.
(8) the output pressure P for the gas that the present invention is passed through is -1MPa≤P < 0Mpa or 0MPa < P≤1Mpa, test
Effect is more preferable.
Detailed description of the invention
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail, wherein
Fig. 1 is the components connection schematic diagram of photovoltaic connector microcrack zone equipment of the invention.
Label in attached drawing are as follows:
Pneumatic supply 1, switch valve 2, connector 3, first pressure gauge 4, tee connector 5, pressure regulator valve 6, second pressure gauge 7,
Power supply 8, electromagnetic valve switch 9, power switch 10.
Specific embodiment
(embodiment 1)
See Fig. 1, the photovoltaic connector microcrack zone equipment of the present embodiment, including the pneumatic supply being sequentially communicated by pipeline
1, switch valve 2, connector 3, tee connector 5, pressure regulator valve 6 and power supply 8.
Pipeline between switch valve 2 and connector 3 is equipped with first pressure gauge 4.Connector 3 and photovoltaic connector to be measured connect
It connects.Pneumatic supply 1 is the positive airway pressure apparatus such as pressure gas tank, air pump.
Three ports of tee connector 5 are connect with switch valve 2, connector 3 and first pressure gauge 4 respectively by pipeline.
Pressure regulator valve 6 is by piping connection between pneumatic supply 1 and switch valve 2.Pipeline is passed through for the ease of regulation and control
In air pressure, have second pressure gauge 7 by piping connection on pressure regulator valve 6.
Pressure regulator valve 1 can use but be not limited to lark Ya De visitor's AFR2000 pressure regulator valve.For ease of operation, switch valve 2 selects
It is excellent to use solenoid valve.For more intuitive observation, first pressure gauge 4 preferably uses digital display manometer.
Power supply 8 is used to power to solenoid valve and digital display manometer.The power supply circuit of solenoid valve is equipped with for controlling
The electromagnetic valve switch 9 of solenoid valve opening and closing.The output end of power supply 8 is additionally provided with the electricity whether powered for controlling power supply 8
Source switch 10.
The photovoltaic connector testing methods for tiny crack of the present embodiment, comprising the following steps:
S1: pressure regulator valve 6, solenoid valve, tee connector, connector 3 and digital display manometer are got out；
S2: pressure regulator valve 6, solenoid valve, tee connector and connector 3 are sequentially connected by pipeline, digital display manometer is led to
Piping connection is crossed in the remaining a port of tee connector, by second pressure gauge 7 through piping connection on pressure regulator valve 6；
S3: pressure regulator valve 6 is accessed into pneumatic supply 1, pneumatic supply 1 uses negative pressure equipment, and solenoid valve and digital display manometer are connect
Electricity；
S4: connector 3 is connected on photovoltaic connector to be measured；
S5: open pneumatic supply, observe second pressure gauge 7, and adjust pressure regulator valve 6 output pressure P be 0MPa < P≤
1MPa；
S6: opening solenoid valve, enters gas in tested photovoltaic connector；
S7: closing solenoid valve, observes the variation of numerical value shown on digital display manometer；
S8: judge that tested photovoltaic connector whether there is micro-crack according to the variation of numerical value on digital display manometer, specifically
Refer to closing solenoid valve, after 5 seconds, decline of pressure > 5%~20% determines that there are micro-cracks on tested photovoltaic connector, on the contrary
Micro-crack is then not present.
What the step S8 of the present embodiment determined, one group of sample that micro-crack is not present is tested first, in the pressure of 0.2MPa
Under, the pressure maintaining since closing solenoid valve, decline of pressure 1%~2% when by the 5th second, decline of pressure 3%~5% when by the 10th second；
Can also change when by the 15th second, and so on pressure change Y1, the decline curve that a Y1 is changed over time can be drawn.
Then there are the products of micro-crack for one group of re-test: equally under the pressure of 0.2MPa, since closing solenoid valve
Pressure maintaining, decline of pressure 20%~25% when by the 5th second；Decline of pressure 70%~80% when by the 10th second；Can also when by the 15th second
Variation, and so on pressure change Y2, the decline curve that another Y2 is changed over time can be drawn.
The change curve of comparison Y1 and Y2 can be found that the descending slope of two curves and rule is completely different.Then
As described above by repeatedly being tested using different atmospheric pressure values, at pressure maintaining that you can get it 5 seconds, whether decline of pressure is big
A numerical value (such as 5%, 8%, 12%, 15% or 20% etc.) in 5%~20%, which is used as, determines whether that there are micro-cracks
Standard.
(embodiment 2)
The present embodiment is substantially the same manner as Example 1, the difference is that: the pneumatic supply 1 of the present embodiment is that vacuum pump etc. is negative
Equipment is pressed, and adjusts the output pressure P of pressure regulator valve 6 in the step S5 of the photovoltaic connector testing methods for tiny crack of the present embodiment
For -1MPa≤P < 0MPa.
The tested photovoltaic connector of judgement in step S8 is with the presence or absence of micro-crack method particularly includes: closing solenoid valve, 5 seconds
Afterwards, on the contrary pressure increase > 5%~20% determines on tested photovoltaic connector there are micro-crack, then there is no micro-cracks.
(embodiment 3)
The present embodiment is substantially the same manner as Example 1, the difference is that: the present embodiment is not provided with power supply 8, the first pressure
Power table 4 uses pointer pressure, and switch valve 2 uses hand-operated valve.
(embodiment 4)
The present embodiment is substantially the same manner as Example 1, the difference is that: the switch valve 2 of the present embodiment uses solenoid valve, the
One pressure gauge 4 uses pointer pressure, and power supply 8 is solenoid valve power supply.
(embodiment 5)
The present embodiment is substantially the same manner as Example 1, the difference is that: the switch valve 2 of the present embodiment uses hand-operated valve, the
One pressure gauge uses digital display manometer, and power supply 8 is digital display manometer power supply.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of photovoltaic connector microcrack zone equipment, it is characterised in that: including the pneumatic supply being sequentially communicated by pipeline
(1), switch valve (2) and connector (3)；Pipeline between the switch valve (2) and connector (3) is equipped with first pressure gauge
(4)；The connector (3) connect with photovoltaic connector to be measured.
2. a kind of photovoltaic connector microcrack zone equipment according to claim 1, it is characterised in that: further include three leading to
Connector (5)；It is pressed respectively with switch valve (2), connector (3) and first by pipeline three ports of the tee connector (5)
Power table (4) connection.
3. a kind of photovoltaic connector microcrack zone equipment according to claim 1, it is characterised in that: further include pressure regulator valve
(6)；The pressure regulator valve (6) is by piping connection between pneumatic supply (1) and switch valve (2)；Pass through pipe on the pressure regulator valve (6)
Road is connected with second pressure gauge (7).
4. a kind of photovoltaic connector microcrack zone equipment according to claim 1, it is characterised in that: the switch valve
It (2) is solenoid valve.
5. a kind of photovoltaic connector microcrack zone equipment according to claim 1 or 4, it is characterised in that: described first
Pressure gauge (4) is digital display manometer.
6. a kind of photovoltaic connector microcrack zone equipment according to claim 5, it is characterised in that: further include power supply electricity
Source (8)；The power supply (8) is used to power to solenoid valve and/or digital display manometer；It is set on the power supply circuit of the solenoid valve
There is the electromagnetic valve switch (9) for controlling solenoid valve opening and closing.
7. a kind of photovoltaic connector microcrack zone equipment according to claim 6, it is characterised in that: the power supply
(8) output end is additionally provided with the power switch (10) whether powered for controlling power supply (8).
8. a kind of photovoltaic connector testing methods for tiny crack, which comprises the following steps:
S1: pressure regulator valve (6), solenoid valve, tee connector, connector (3) and digital display manometer are got out；
S2: pressure regulator valve (6), solenoid valve, tee connector and connector (3) are sequentially connected by pipeline, digital display manometer is led to
Piping connection is crossed in the remaining a port of tee connector, by second pressure gauge (7) by piping connection in pressure regulator valve (6)
On；
S3: pressure regulator valve (6) are accessed into pneumatic supply, and solenoid valve and digital display manometer are connect into electricity；
S4: connector (3) is connected on photovoltaic connector to be measured；
S5: opening pneumatic supply (1), observes second pressure gauge (7), and adjust the output pressure of pressure regulator valve (6)；
S6: opening solenoid valve, enters gas in tested photovoltaic connector；
S7: closing solenoid valve, observes the variation of numerical value shown on digital display manometer；
S8: judged tested photovoltaic connector with the presence or absence of micro-crack according to the variation of numerical value on digital display manometer.
9. a kind of photovoltaic connector testing methods for tiny crack according to claim 8, it is characterised in that: exchanged in the S5
The adjusting of the output pressure of pressure valve (6) specifically:
When pneumatic supply (1) is negative pressure equipment, the output pressure P for adjusting pressure regulator valve (6) is -1MPa≤P < 0MPa；
When pneumatic supply (1) is positive airway pressure apparatus, the output pressure P for adjusting pressure regulator valve (6) is 0MPa < P≤1MPa.
10. a kind of photovoltaic connector testing methods for tiny crack according to claim 9, it is characterised in that: in the S8
Judge tested photovoltaic connector with the presence or absence of micro-crack method particularly includes:
When pneumatic supply (1) is positive airway pressure apparatus, solenoid valve is closed, after 5 seconds, decline of pressure > 5%~20% determines tested photovoltaic
It is on the contrary then micro-crack is not present there are micro-crack on connector；
When pneumatic supply (1) is negative pressure equipment, solenoid valve is closed, after 5 seconds, pressure increase > 5%~20% determines tested photovoltaic
It is on the contrary then micro-crack is not present there are micro-crack on connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910565368.5A CN110132505A (en) | 2019-06-27 | 2019-06-27 | A kind of photovoltaic connector microcrack zone equipment and its detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910565368.5A CN110132505A (en) | 2019-06-27 | 2019-06-27 | A kind of photovoltaic connector microcrack zone equipment and its detection method |
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| CN110132505A true CN110132505A (en) | 2019-08-16 |
Family
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| CN201910565368.5A Pending CN110132505A (en) | 2019-06-27 | 2019-06-27 | A kind of photovoltaic connector microcrack zone equipment and its detection method |
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