CN209802611U - Photovoltaic connector microcrack detection equipment - Google Patents
Photovoltaic connector microcrack detection equipment Download PDFInfo
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- CN209802611U CN209802611U CN201920979459.9U CN201920979459U CN209802611U CN 209802611 U CN209802611 U CN 209802611U CN 201920979459 U CN201920979459 U CN 201920979459U CN 209802611 U CN209802611 U CN 209802611U
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- connector
- valve
- pressure
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- photovoltaic connector
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Abstract
The utility model discloses a photovoltaic connector microcrack detection device, which comprises an air pressure source, a switch valve and a connector which are sequentially communicated through a pipeline; a first pressure gauge is arranged on a pipeline between the switch valve and the connector; the connector is connected with the photovoltaic connector to be tested. The utility model discloses a change the pressure in being surveyed the photovoltaic connector to judge through the change of the numerical value of first manometer under the pressurize state whether there is the crazing line in the photovoltaic connector, not only the inspection is accurate, convenient operation, low cost moreover.
Description
Technical Field
The utility model belongs to the technical field of a connector and specifically relates to a photovoltaic connector microcrack check out test set is related to.
Background
The photovoltaic modules are connected in series through cables and connectors, electric energy generated in the photovoltaic modules is output outwards through the cables and the connectors, the photovoltaic modules are different from common electric connectors in that the requirements of the photovoltaic connectors on sealing performance are very high, the photovoltaic modules are used outdoors for a long time and often face severe outdoor environments, and serious potential safety hazards can be brought if water seepage and electric leakage are caused due to poor sealing performance of the photovoltaic connectors. However, in the process of producing the photovoltaic connector at present, the photovoltaic connector often has micro-cracks which cannot be seen by naked eyes, if the defective products are put on the market, not only can serious potential safety hazards be brought, but also fire disasters can be caused, personnel injuries and property losses are caused, and the reputation of manufacturers is also lost. Therefore, the detection of the microcracks of the photovoltaic connector is very important, but at present, better detection equipment is not used for detecting the photovoltaic connector, and the existing detection equipment is higher in cost and larger, so that the detection cost is greatly improved.
SUMMERY OF THE UTILITY MODEL
the utility model aims at not having better check out test set among the prior art to detect the problem of photovoltaic connector and provide a photovoltaic connector microcrack check out test set.
Realize the utility model discloses the technical scheme of purpose is: a photovoltaic connector micro-crack detection device comprises an air pressure source, a switch valve and a connector which are sequentially communicated through a pipeline; a first pressure gauge is arranged on a pipeline between the switch valve and the connector; the connector is connected with the photovoltaic connector to be tested.
The device also comprises a three-way connector; and three ports of the three-way connector are respectively connected with the switch valve, the connector and the first pressure gauge through pipelines.
The device also comprises a pressure regulating valve; the pressure regulating valve is connected between the air pressure source and the switch valve through a pipeline; and the pressure regulating valve is connected with a second pressure gauge through a pipeline.
The switch valve is an electromagnetic valve.
The first pressure gauge is a digital display pressure gauge.
The device also comprises a power supply; the power supply is used for supplying power to the electromagnetic valve and/or the digital display pressure gauge; and a power supply circuit of the electromagnetic valve is provided with an electromagnetic valve switch for controlling the electromagnetic valve to be opened and closed.
And the output end of the power supply is also provided with a power switch for controlling whether the power supply supplies power or not.
By adopting the technical scheme, the utility model discloses following beneficial effect has: (1) the utility model discloses a change the pressure in being surveyed the photovoltaic connector to judge through the change of the numerical value of first manometer under the pressurize state whether there is the crazing line in the photovoltaic connector, not only the inspection is accurate, convenient operation, low cost moreover.
(2) The utility model discloses set up three way connection, be convenient for be connected to the pipeline between ooff valve and the connector with first manometer.
(3) The utility model discloses set up air-vent valve and second manometer, the control of being convenient for is surveyed the pressure in the photovoltaic connector, avoids influencing test effect because of too big or low crossing of pressure.
(4) The utility model discloses a ooff valve adopts the solenoid valve, and it is more convenient to operate.
(5) The utility model discloses a first manometer adopts the digital display manometer, observes more directly perceivedly.
(6) The utility model discloses set up power supply, be convenient for well supply power to solenoid valve and digital display manometer.
(7) The utility model discloses having set up the switch, it is more convenient to the solenoid valve control.
(8) the utility model discloses the output pressure P of the gas that lets in is-1 MPa and is less than or equal to P < 0Mpa or 0MPa and P is less than or equal to 1Mpa, and the test effect is better.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
fig. 1 is a schematic view of the connection of the components of the present invention.
The reference numbers in the drawings are:
The pressure regulating valve comprises a pressure source 1, a switch valve 2, a connector 3, a first pressure gauge 4, a three-way connector 5, a pressure regulating valve 6, a second pressure gauge 7, a power supply 8, an electromagnetic valve switch 9 and a power switch 10.
Detailed Description
(example 1)
Referring to fig. 1, the photovoltaic connector microcrack detection device of the embodiment includes an air pressure source 1, a switch valve 2, a connector 3, a three-way connector 5, a pressure regulating valve 6 and a power supply 8, which are sequentially communicated through a pipeline.
A first pressure gauge 4 is arranged on a pipeline between the switch valve 2 and the connector 3. The connector 3 is connected with the photovoltaic connector to be tested. The air pressure source 1 is a pressure air storage tank, an air pump and other positive pressure equipment.
Three ports of the three-way connector 5 are respectively connected with the switch valve 2, the connector 3 and the first pressure gauge 4 through pipelines.
The pressure regulating valve 6 is connected between the air pressure source 1 and the switch valve 2 through a pipeline. In order to adjust and control the air pressure in the pipeline, a second pressure gauge 7 is connected to the pressure adjusting valve 6 through a pipeline.
The pressure regulating valve 1 can be, but is not limited to, a bailing alder AFR2000 pressure regulating valve. For the convenience of operation, the on-off valve 2 is preferably a solenoid valve. For more intuitive observation, the first pressure gauge 4 is preferably a digital display pressure gauge.
And the power supply 8 is used for supplying power to the electromagnetic valve and the digital display pressure gauge. And a power supply circuit of the electromagnetic valve is provided with an electromagnetic valve switch 9 for controlling the electromagnetic valve to open and close. The output end of the power supply 8 is also provided with a power switch 10 for controlling whether the power supply 8 supplies power or not.
The detection method adopting the microcrack detection equipment for the photovoltaic connector comprises the following steps:
S1: preparing a pressure regulating valve 6, an electromagnetic valve, a three-way connector, a connector 3 and a digital display pressure gauge;
S2: the pressure regulating valve 6, the electromagnetic valve, the three-way connector and the connector 3 are sequentially connected through a pipeline, the digital display pressure gauge is connected to the rest one port of the three-way connector through a pipeline, and the second pressure gauge 7 is connected to the pressure regulating valve 6 through a pipeline;
S3: connecting the pressure regulating valve 6 to an air pressure source 1, wherein the air pressure source 1 adopts negative pressure equipment, and connecting an electromagnetic valve and a digital display pressure gauge with electricity;
S4: connecting the connector 3 to a photovoltaic connector to be tested;
s5: opening the air pressure source, observing the second pressure gauge 7, and adjusting the output pressure P of the pressure regulating valve 6 to be more than 0MPa and less than or equal to 1 MPa;
s6: opening the electromagnetic valve to make the gas enter the tested photovoltaic connector;
S7: closing the electromagnetic valve, and observing the change of the numerical value displayed on the digital display pressure gauge;
S8: and judging whether the micro-crack exists on the tested photovoltaic connector or not according to the change of the numerical value on the digital display pressure gauge, specifically, closing the electromagnetic valve, and judging that the micro-crack exists on the tested photovoltaic connector if the pressure attenuation is more than 5-20% after 5 seconds, otherwise, not judging that the micro-crack exists.
in the determination of step S8 in this embodiment, a group of samples without microcracks is first tested, and the pressure is maintained at 0.2MPa from the closing of the solenoid valve to the pressure decay of 1% to 2% at the 5 th second and 3% to 5% at the 10 th second; the pressure changes Y1 by the time of 15 seconds, and a descending curve of Y1 along with the time can be drawn.
A further set of products with microcracks was then tested: under the pressure of 0.2MPa, the pressure is maintained from the closing of the electromagnetic valve until the pressure is attenuated by 20 to 25 percent at the 5 th second; the pressure is attenuated by 70 to 80 percent by the 10 th second; the pressure change Y2 is also changed by the 15 th second, and another descending curve of Y2 along with the time can be drawn.
Comparing the change curves of Y1 and Y2 shows that the descending slopes and regularity of the two curves are quite different. Then, the method is adopted to carry out a plurality of tests by adopting different air pressure values, and whether the pressure attenuation is greater than one numerical value (such as 5%, 8%, 12%, 15% or 20% and the like) in 5-20% when the pressure is maintained for 5 seconds can be obtained as a standard for determining whether the microcracks exist.
(example 2)
This embodiment is substantially the same as embodiment 1 except that: the pressure source 1 of the present embodiment is a negative pressure device such as a vacuum pump, and the output pressure P of the pressure regulating valve 6 is adjusted to-1 MPa ≦ P < 0MPa in step S5 of the method for detecting microcracks in a photovoltaic connector of the present embodiment.
the specific method for determining whether there is a microcrack in the measured photovoltaic connector in step S8 is as follows: and closing the electromagnetic valve, and after 5 seconds, judging that the micro-crack exists on the measured photovoltaic connector if the pressure is increased by more than 5-20%, otherwise, judging that the micro-crack does not exist.
(example 3)
This embodiment is substantially the same as embodiment 1 except that: in this embodiment, the power supply 8 is not provided, the first pressure gauge 4 is a pointer pressure gauge, and the switch valve 2 is a manual valve.
(example 4)
This embodiment is substantially the same as embodiment 1 except that: the switch valve 2 of this embodiment adopts the solenoid valve, and first manometer 4 adopts pointer-type manometer, and power supply 8 is the solenoid valve power supply.
(example 5)
This embodiment is substantially the same as embodiment 1 except that: the switch valve 2 of this embodiment adopts manual valve, and first manometer adopts the digital display manometer, and power supply 8 supplies power for the digital display manometer.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. the utility model provides a photovoltaic connector microcrack check out test set which characterized in that: comprises an air pressure source (1), a switch valve (2) and a connector (3) which are sequentially communicated through a pipeline; a first pressure gauge (4) is arranged on a pipeline between the switch valve (2) and the connector (3); and the connector (3) is connected with the photovoltaic connector to be tested.
2. The photovoltaic connector micro-crack detection apparatus as claimed in claim 1, wherein: the device also comprises a three-way connector (5); and three ports of the three-way connector (5) are respectively connected with the switch valve (2), the connector (3) and the first pressure gauge (4) through pipelines.
3. The photovoltaic connector micro-crack detection apparatus as claimed in claim 1, wherein: the device also comprises a pressure regulating valve (6); the pressure regulating valve (6) is connected between the air pressure source (1) and the switch valve (2) through a pipeline; and the pressure regulating valve (6) is connected with a second pressure gauge (7) through a pipeline.
4. The photovoltaic connector micro-crack detection apparatus as claimed in claim 1, wherein: the switch valve (2) is an electromagnetic valve.
5. The photovoltaic connector micro-crack detection apparatus as claimed in claim 1 or 4, wherein: the first pressure gauge (4) is a digital display pressure gauge.
6. The photovoltaic connector micro-crack detection apparatus as claimed in claim 5, wherein: the device also comprises a power supply (8); the power supply (8) is used for supplying power to the electromagnetic valve and/or the digital display pressure gauge; and a power supply circuit of the electromagnetic valve is provided with an electromagnetic valve switch (9) for controlling the electromagnetic valve to open and close.
7. The photovoltaic connector micro-crack detection apparatus as claimed in claim 6, wherein: and the output end of the power supply (8) is also provided with a power switch (10) for controlling whether the power supply (8) supplies power or not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920979459.9U CN209802611U (en) | 2019-06-27 | 2019-06-27 | Photovoltaic connector microcrack detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920979459.9U CN209802611U (en) | 2019-06-27 | 2019-06-27 | Photovoltaic connector microcrack detection equipment |
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| Publication Number | Publication Date |
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| CN209802611U true CN209802611U (en) | 2019-12-17 |
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| CN201920979459.9U Active CN209802611U (en) | 2019-06-27 | 2019-06-27 | Photovoltaic connector microcrack detection equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132505A (en) * | 2019-06-27 | 2019-08-16 | 毛娟 | A kind of photovoltaic connector microcrack zone equipment and its detection method |
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2019
- 2019-06-27 CN CN201920979459.9U patent/CN209802611U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132505A (en) * | 2019-06-27 | 2019-08-16 | 毛娟 | A kind of photovoltaic connector microcrack zone equipment and its detection method |
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