CN114184914A - Method for detecting withstand voltage of silk covered wire and auxiliary device thereof - Google Patents
Method for detecting withstand voltage of silk covered wire and auxiliary device thereof Download PDFInfo
- Publication number
- CN114184914A CN114184914A CN202111465063.0A CN202111465063A CN114184914A CN 114184914 A CN114184914 A CN 114184914A CN 202111465063 A CN202111465063 A CN 202111465063A CN 114184914 A CN114184914 A CN 114184914A
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- Prior art keywords
- covered wire
- silk
- fixing bolt
- test piece
- auxiliary
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012360 testing method Methods 0.000 claims abstract description 71
- 230000015556 catabolic process Effects 0.000 claims abstract description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 238000005476 soldering Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a method and an auxiliary device for detecting the withstand voltage of a silk covered wire, which comprise a first fixing bolt, a second fixing bolt and an auxiliary test piece, wherein the main body of the auxiliary test piece is in a spring shape, and a middle through hole is matched with the diameter of the silk covered wire; and one end of the auxiliary test piece is provided with a lead. The invention has high efficiency, rapidness and convenience for detection, greatly reduces the omission factor, adopts two fixing bolts to be fixed on the workbench, leads one end of a single silk covered wire to be tinned, does not need to be tinned at the other end, saves materials and processes, moves the auxiliary test piece twice back and forth by seamlessly attaching the auxiliary test piece to the silk covered wire, judges whether the test is qualified according to the number of breakdown points of the whole silk covered wire, has high efficiency, rapidness and convenience for the detection method, and greatly reduces the omission factor because the auxiliary test piece has no dead angle to be attached to the silk covered wire.
Description
Technical Field
The invention relates to the field of silk-covered wire detection, in particular to a silk-covered wire voltage-withstanding detection method and an auxiliary device thereof.
Background
At present, the covered wire is generally applied to power electronics, transformers and inductors, and the application amount is very large, so that each index detection of delivery is indispensable. The voltage withstand test of the finished wire covered wire is an alternating voltage test, also called a power frequency voltage withstand test. The alternating current withstand voltage test is a test for applying a certain voltage value to the insulation on the outer surface of the wire covered wire and keeping the voltage value for a relevant time to check whether the insulation is broken down. This test must be performed before each product of the existing silk covered wire is shipped. The existing silk-covered wire detection method is that two silk-covered wires are twisted together, two ends of the two silk-covered wires are held by two test clamps of a pressure-resistant machine for testing, because a larger gap exists between the two twisted silk-covered wires, the surfaces which are not contacted cannot be detected, the undetected rate is too high during testing, and customers have great bad hidden dangers after delivery, so that the loss is caused, and the enterprise reputation is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method and an auxiliary device for detecting the withstand voltage of a silk covered wire, which have the advantages of high efficiency, rapidness and convenience in detection and greatly reduce the omission factor.
The technical scheme adopted by the invention for solving the technical problem is as follows: a method for detecting the pressure resistance of a silk covered wire comprises the following steps,
firstly, preparing a silk covered wire to be detected, and checking whether bending, crease, copper exposure damage or the condition of a hair line on the surface exist;
secondly, scraping tin surface oxides at one end of the wire covered wire, then tinning, winding the end subjected to tin soldering on the first fixing bolt, and taking one of the test clamps after winding to clamp the tin soldering end;
thirdly, an auxiliary test piece penetrates through the other end of the silk covered wire, the auxiliary test piece is in seamless fit with the silk covered wire, then the other end of the silk covered wire is wound on a second fixing bolt, and at the moment, the silk covered wire needs to be in a straightening state;
fourthly, clamping the lead of the auxiliary test piece by the other test clamp;
fifthly, opening the pressure-resistant machine, holding the test clamp of the auxiliary test piece, slowly moving from the first fixed bolt end to the second fixed bolt end, slightly pausing, slowly moving the test clamp from the second fixed bolt end to the first fixed bolt end, and judging whether the test clamp is qualified or not according to the number of breakdown points of the whole wire covered wire.
As a further improvement, when the silk covered wire is wound on the first fixing bolt and the second fixing bolt, the silk covered wire is wound from the middle part of the first fixing bolt and the second fixing bolt to the top end.
Preferably, the length of the silk covered wire to be detected is 100-150 cm.
An auxiliary device for the above-mentioned method for detecting the withstand voltage of the silk covered wire comprises a first fixing bolt, a second fixing bolt and an auxiliary test piece, wherein the main body of the auxiliary test piece is in a spring shape, and a middle through hole is matched with the diameter of the silk covered wire; and one end of the auxiliary test piece is provided with a lead.
Preferably, the auxiliary test piece material is a tinned copper wire.
The invention can be used for inspecting the common type and hot melt type silk covered wire and film covered wire for the winding.
The auxiliary test piece is seamlessly attached to the silk covered wire, the auxiliary test piece is moved twice back and forth, whether the auxiliary test piece is qualified or not is judged according to the number of breakdown points of the whole silk covered wire, the detection method is efficient, rapid and convenient, and the auxiliary test piece is attached to the silk covered wire without dead angles, so that the omission ratio is greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an auxiliary test piece according to an embodiment of the invention.
FIG. 3 is a side view of an auxiliary test piece according to an embodiment of the present invention.
Wherein, 1, a first fixing bolt; 2. an auxiliary test piece; 3. testing the clamp; 4. a second securing latch; 5. a lead wire; 6. a pressure-resistant machine; 7. a work table; 8. and a through hole.
The invention is further described below with reference to the accompanying drawings.
Detailed Description
Example 1: as shown in fig. 1, 2 and 3, a method for detecting withstand voltage of a covered wire, wherein the covered wire is used for an inductor, the covered wire is 0.06 × 500mm, the test condition is 960V/AC leakage current is 1mA, when the number of breakdown points of the covered wire is less than or equal to 1 point, the covered wire is qualified, and when the number of breakdown points of the covered wire is greater than 2 points, the covered wire on the surface is unqualified, specifically comprising the following steps:
firstly, preparing a silk covered wire to be detected, taking the length of the silk covered wire as 110cm, and checking whether bending, crease, copper exposure damage or silk explosion conditions exist on the surface;
secondly, scraping tin surface oxides at one end of the wire covered wire, then tinning, winding the end subjected to tin soldering on the first fixing bolt 1, and taking one of the test clamps 3 after winding to clamp the tin soldering end;
thirdly, an auxiliary test piece 2 penetrates through the other end of the silk covered wire, the auxiliary test piece 2 is in seamless fit with the silk covered wire, then the other end of the silk covered wire is wound on a second fixing bolt 4, and at the moment, the silk covered wire needs to be in a straightening state;
fourthly, clamping the lead 5 of the auxiliary test piece 2 by the other test clamp 3;
fifthly, the pressure-resistant machine 6 is opened, the test clamp 3 of the auxiliary test piece 2 is held by hands, the test clamp 3 is slowly moved to the end of the second fixing bolt 4 from the end of the first fixing bolt 1, the pause is slightly made, then the test clamp 3 is slowly moved to the end of the first fixing bolt 1 from the end of the second fixing bolt 4, and whether the test clamp is qualified or not is judged according to the number of breakdown points of the whole silk covered wire.
According to the invention, a first fixing bolt 1 and a second fixing bolt 4 are fixed on a workbench 7, wherein when the wire covered wire is wound on the first fixing bolt 1 and the second fixing bolt 4, the wire covered wire is wound from the middle part of the first fixing bolt 1 and the second fixing bolt 4 to the top end.
The invention relates to an auxiliary test piece for matching different silk covered wires with different specifications, wherein the table below is a table of matching data of each specification and comprises breakdown points for judging whether the detected silk covered wires are qualified or not.
| Specification of silk covered wire | Withstand voltage test conditions | Diameter of through hole (mm) | Number of points allowing breakdown |
| 0.1×80C/1.6 | Is less than or equal toAt 1100V/AC 1mA | φ2.1 | 1 point or less |
| 0.1×100C/1.7 | Less than or equal to 1100V/AC 1mA | φ2.2 | 1 point or less |
| 0.1×160C/2.0 | Less than or equal to 1100V/AC 1mA | φ2.5 | 1 point or less |
| 0.1×500C/3.3 | Less than or equal to 1100V/AC 1mA | φ3.8 | 1 point or less |
| 0.1×1000C/4.7 | Less than or equal to 1100V/AC 1mA | φ5.2 | 1 point or less |
| 0.05×550C/2.3 | Less than or equal to 960V/AC 1mA | φ2.8 | 1 point or less |
| 0.06×360C/1.9 | Less than or equal to 960V/AC 1mA | φ2.4 | 1 point or less |
| 0.06×500C/2.2 | Less than or equal to 960V/AC 1mA | φ2.7 | 1 point or less |
| 0.06×630C/2.8 | Less than or equal to 960V/AC 1mA | φ3.3 | 1 point or less |
Example 2: as shown in fig. 1, 2 and 3, an auxiliary device for the method for detecting the withstand voltage of the silk covered wire according to claim 1 comprises a first fixing bolt 1, a second fixing bolt 4 and an auxiliary testing piece 2, wherein the main body of the auxiliary testing piece 2 is in a spring shape, and a middle through hole 8 is matched with the diameter of the silk covered wire; and one end of the auxiliary test piece 2 is provided with a lead 5. The auxiliary test piece 2 is made of a tinned copper wire.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it will be obvious to those skilled in the art that modifications may be made in the technical solutions described in the above embodiments, or some technical features may be equivalently replaced. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A method for detecting the withstand voltage of a silk covered wire is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
firstly, preparing a silk covered wire to be detected, and checking whether bending, crease, copper exposure damage or silk explosion conditions exist on the surface;
secondly, scraping tin surface oxides at one end of the wire covered wire, then tinning, winding the end subjected to tin soldering on the first fixing bolt (1), and taking one test clamp (3) after winding to clamp the end subjected to tin soldering;
thirdly, an auxiliary test piece (2) penetrates from the other end of the silk covered wire, the auxiliary test piece (2) is in seamless fit with the silk covered wire, then the other end of the silk covered wire is wound on a second fixing bolt (4), and at the moment, the silk covered wire needs to be in a straightening state;
fourthly, clamping the lead (5) of the auxiliary test piece (2) by another test clamp (3);
fifthly, the pressure resisting machine (6) is opened, the test clamp (3) of the auxiliary test piece (2) is held by hands, the test clamp (3) is slowly moved to the end of the second fixing bolt (4) from the end of the first fixing bolt (1), the test clamp (3) is slightly stopped, then the test clamp (3) is slowly moved to the end of the first fixing bolt (1) from the end of the second fixing bolt (4), and whether the test clamp is qualified or not is judged according to the number of breakdown points of the whole silk covered wire.
2. The method for detecting the withstand voltage of the silk-covered wire according to claim 1, which is characterized in that: when the silk covered wire is wound on the first fixing bolt (1) and the second fixing bolt (4), the silk covered wire is wound from the middle parts of the first fixing bolt (1) and the second fixing bolt (4) to the top ends.
3. The method for detecting the withstand voltage of the silk-covered wire according to claim 1, which is characterized in that: the length of the silk covered wire to be detected is 100-150 cm.
4. An auxiliary device for the withstand voltage testing method of the silk-covered wire according to claim 1, characterized in that: the device comprises a first fixing bolt (1), a second fixing bolt (4) and an auxiliary test piece (2), wherein the main body of the auxiliary test piece (2) is in a spring shape, and a middle through hole (8) is matched with the diameter of a wire covered wire; and one end of the auxiliary test piece (2) is provided with a lead (5).
5. The auxiliary device for the withstand voltage testing method of the silk-covered wire according to claim 4, characterized in that: the auxiliary test piece (2) is made of a tinned copper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111465063.0A CN114184914A (en) | 2021-12-03 | 2021-12-03 | Method for detecting withstand voltage of silk covered wire and auxiliary device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111465063.0A CN114184914A (en) | 2021-12-03 | 2021-12-03 | Method for detecting withstand voltage of silk covered wire and auxiliary device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114184914A true CN114184914A (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111465063.0A Pending CN114184914A (en) | 2021-12-03 | 2021-12-03 | Method for detecting withstand voltage of silk covered wire and auxiliary device thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949997A (en) * | 2010-09-09 | 2011-01-19 | 山东哈大电气有限公司 | Electromagnetic wire online withstand voltage detection device for dry-type air-core reactor |
| JP2015228300A (en) * | 2014-05-30 | 2015-12-17 | タツタ電線株式会社 | Withstand voltage test for insulated electric wire |
| CN205910281U (en) * | 2016-06-27 | 2017-01-25 | 苏州韵安电器有限公司 | Automatic testing arrangement of wire |
| CN209784480U (en) * | 2019-03-12 | 2019-12-13 | 珠海高赢电子科技有限公司 | electromagnetic wire withstand voltage testing device |
| CN113376489A (en) * | 2021-06-22 | 2021-09-10 | 广州万宝电子材料有限公司 | Insulated wire voltage withstand test method and test tool thereof |
-
2021
- 2021-12-03 CN CN202111465063.0A patent/CN114184914A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949997A (en) * | 2010-09-09 | 2011-01-19 | 山东哈大电气有限公司 | Electromagnetic wire online withstand voltage detection device for dry-type air-core reactor |
| JP2015228300A (en) * | 2014-05-30 | 2015-12-17 | タツタ電線株式会社 | Withstand voltage test for insulated electric wire |
| CN205910281U (en) * | 2016-06-27 | 2017-01-25 | 苏州韵安电器有限公司 | Automatic testing arrangement of wire |
| CN209784480U (en) * | 2019-03-12 | 2019-12-13 | 珠海高赢电子科技有限公司 | electromagnetic wire withstand voltage testing device |
| CN113376489A (en) * | 2021-06-22 | 2021-09-10 | 广州万宝电子材料有限公司 | Insulated wire voltage withstand test method and test tool thereof |
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