CN108387514A - The test device and test method of bonding lacquered wires intensity under a kind of condition of high temperature - Google Patents
The test device and test method of bonding lacquered wires intensity under a kind of condition of high temperature Download PDFInfo
- Publication number
- CN108387514A CN108387514A CN201810538171.8A CN201810538171A CN108387514A CN 108387514 A CN108387514 A CN 108387514A CN 201810538171 A CN201810538171 A CN 201810538171A CN 108387514 A CN108387514 A CN 108387514A
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- Prior art keywords
- high temperature
- fuel tank
- condition
- sample
- intensity under
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- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000010998 test method Methods 0.000 title claims abstract description 12
- 239000002828 fuel tank Substances 0.000 claims abstract description 28
- 238000009864 tensile test Methods 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 16
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 6
- 238000004534 enameling Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of test devices of bonding lacquered wires intensity under condition of high temperature, including tensile testing machine, fuel tank and fixture, tensile testing machine includes pedestal, holder, upper grip, lower collet, adjusts beam, holder is mounted on the base, adjusting beam is rack-mount and can be moved up and down along holder, and upper grip, which is fixed on, to be adjusted on beam, and fuel tank is mounted on the base, top of oil-tank is equipped with opening, and bottom is equipped with lower collet in fuel tank.The test device of the present invention includes tensile testing machine, fuel tank and fixture, fixture is for clamping copper strap wire and forming sample, fuel tank is for the flow condition containing high temperature oil inside analogue transformer, tensile testing machine is used for the adhesive strength of test sample, the measurement that bonding lacquered wires intensity can be realized by the cooperation of tensile testing machine, fuel tank and fixture has the advantages that simple in structure, high degree of automation, easy to operate.The invention also discloses a kind of test methods of bonding lacquered wires intensity under condition of high temperature.
Description
Technical field
The present invention relates to cable field, more particularly to the test device of bonding lacquered wires intensity and survey under a kind of condition of high temperature
Method for testing.
Background technology
Winding in Power Transformer line is in order to improve whole mechanical strength, to enhance the resistance to shorting impact capacity of transformer,
It is whole need to enameled wire to be formed to a rigidity.One of most important one method is will by coating self-adhesion paint in enamelled wire surface
Single winding wire bonds together.At 100 DEG C or more, high-temperature resistant self-adhesive enameled wire improves transformer longtime running temperature at present
Solution glues temperature, that is, improves flexural rigidity of the transposed conductor under hot operation, started in extra-high voltage transformer application.Cause
This must be rigid in checking up for the index of high temperature self-adhesion intensity, need a kind of test side in the production process of transposed conductor
Method and related mating equipment are verified and are evaluated to it, but are temporarily not known with which kind of method and apparatus in electromagnetic wire industry
It is verified.
Invention content
In order to solve the above technical problem, the present invention provides a kind of height simple in structure, easy to operate, high degree of automation
The test device of bonding lacquered wires intensity under temperature state, and a kind of test side of bonding lacquered wires intensity under the condition of high temperature is provided
Method.
Technical proposal that the invention solves the above-mentioned problems is：The test dress of bonding lacquered wires intensity under a kind of condition of high temperature
It sets, including tensile testing machine, fuel tank and the fixture that sample is formed for clamping line-transect, the tensile testing machine includes pedestal, branch
Frame, lower collet, adjusts beam at upper grip, and the holder is mounted on the base, and the adjusting beam is rack-mount and can be along holder
It moves up and down, the upper grip, which is fixed on, to be adjusted on beam, and the fuel tank is mounted on the base, top of oil-tank face upper grip position
Place, which is equipped with, to be open, and bottom is equipped with lower collet in the fuel tank and lower collet is located at immediately below upper grip.
The test device of bonding lacquered wires intensity under the above-mentioned condition of high temperature, the fixture include two pieces of folders disposed in parallel
Plate is uniformly provided with several threaded holes on the clamping plate, is connected two clamping plates across the corresponding threaded hole of two clamping plates with bolt
Get up, forms a folder room on two clamping plates between two adjacent bolts.
The test device of bonding lacquered wires intensity under the above-mentioned condition of high temperature, the holder include two supporting beams, two branch
Support beam is oppositely arranged and is vertically mounted on pedestal both sides, and the side of another supporting beam of every supporting beam face is equipped with sliding rail,
The both ends for adjusting beam are separately mounted on the sliding rail of two supporting beams.
The test device of bonding lacquered wires intensity under the above-mentioned condition of high temperature, the fuel tank include babinet, are equipped with and become in babinet
Depressor is oily, and the coating thermal insulation material constant for oil temperature in guard box body, top of the box are equipped with for stirring on the outer surface of babinet
The blender of transformer oil is mixed, babinet side is equipped with the access device for connecting temperature sensor, and babinet is equipped with heating and fills
It sets.
The test device of bonding lacquered wires intensity under the above-mentioned condition of high temperature, the supporting beam are equipped with for detecting in fuel tank
The thermometer of oil temperature.
The test device of bonding lacquered wires intensity under the above-mentioned condition of high temperature, the lower collet are equipped with for controlling lower collet
The connecting rod of folding.
The test method of bonding lacquered wires intensity, includes the following steps under a kind of condition of high temperature：
1）Two self-adhesion enameling copper strap wires are taken, overlapped overlap joint is carried out, lap-joint forms faying surface, records the face of faying surface
Product；
2）Overlapped two self-adhesion enameling copper strap wires are put into fixture, and faying surface is located in folder room, is tightened using bolt
Mode faying surface is compressed, formed sample；
3）Sample is put into insulating box and is heated, heating temperature is 95~155 DEG C, and heating time is 12~36 hours；Take out sample
Product unclamp fixture after being cooled to room temperature；
4）The upper grip of tensile testing machine and lower collet are clamped into the both ends of sample respectively, and ensure that the faying surface of sample is immersed in
In the transformer oil of fuel tank；
5）Apply the upward pulling force being stepped up to adjusting beam, when the lap-joint of sample detaches, and record lap-joint detaches
Value of thrust；
6）Value of thrust when being detached according to the area of faying surface and lap-joint calculates the adhesive strength of sampleT B ：
Wherein：h 1For bare wire nominal height, R is bare wire radius of corner,ITo be superimposed length,S k For bond area,F maxTo measure
Value of thrust when separation.
The test method of bonding lacquered wires intensity under the above-mentioned condition of high temperature, the step 1）In, in faying surface, two self-adhesions
The wide face of enameling copper strap wire contacts with each other, lap of splice 25mm, and self-adhesion enameling copper strap wire overall length is 14~16cm.
The test method of bonding lacquered wires intensity under the above-mentioned condition of high temperature, the step 2）In, power is used when screwing bolts
Square spanner, and the numerical value of holding torque wrench torque is 55~85N；The corresponding pressure for being applied to faying surface is 0.6~2N/mm
²。
The beneficial effects of the present invention are：
1, test device of the invention includes tensile testing machine, fuel tank and fixture, and fixture is used to clamp copper strap wire and forms sample,
Fuel tank is used for the adhesive strength of test sample for the flow condition containing high temperature oil inside analogue transformer, tensile testing machine, leads to
The measurement of bonding lacquered wires intensity can be realized by crossing the cooperation of tensile testing machine, fuel tank and fixture, have simple in structure, automation
Degree height, easy to operate advantage.
2, in test method of the invention, sample is prepared first, sample is then subjected to heating postcooling to room temperature, then will
The upper grip of tensile testing machine and lower collet clamp the both ends of sample respectively, then to adjust beam apply be stepped up it is upward
Pulling force, the value of thrust when lap-joint of sample detaches, and is finally detached according to the area of line-transect faying surface and lap-joint calculate
The adhesive strength of sample can effectively simulate work operation conditions of the high temperature self-adhesive enameled wire in transformer, high certainty of measurement；And
And it is easy to operate, it can be tested with continuous several times, temperature is constant unaffected when replacing sample, realizes automation control, reduces
The error that the artificial mode for implementing control by experience is brought.
Description of the drawings
Fig. 1 be the present invention test device in fixture structural schematic diagram.
Fig. 2 be the present invention test device in tensile testing machine structural schematic diagram.
Fig. 3 be the present invention test device in fuel tank structural schematic diagram.
Fig. 4 be the present invention test method in line-transect overlapping overlapped schematic diagram.
Specific implementation mode
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1-Figure 3, under a kind of condition of high temperature bonding lacquered wires intensity test device, including tensile testing machine,
Fuel tank and the fixture that sample is formed for clamping line-transect.
As shown in Figure 1, the fixture includes two pieces of clamping plate 2-1 disposed in parallel, it is uniformly provided on the clamping plate 2-1 several
Threaded hole is connected two clamping plates 2-1 across the corresponding threaded holes of two clamping plates 2-1 with bolt 2-2, two clamping plates 2-1
A folder room is formed between upper two adjacent bolt 2-2.
As shown in Fig. 2, the tensile testing machine includes pedestal 3-1, holder, upper grip 3-3, lower collet, adjusts beam 3-4,
The holder includes two supporting beam 3-2, and two supporting beam 3-2 are oppositely arranged and are vertically mounted on the both sides pedestal 3-1, supporting beam
3-2 is equipped with the thermometer 3-5 for detecting oil temperature in fuel tank；The side of another supporting beam 3-2 of every supporting beam 3-2 face
It is equipped with sliding rail 3-6, the both ends for adjusting beam 3-4 are separately mounted on the sliding rail 3-6 of two supporting beam 3-2, adjust beam 3-4
It can be moved up and down along sliding rail 3-6, the upper grip 3-3, which is fixed on, to be adjusted on beam 3-4, and the fuel tank is mounted on pedestal 3-1, oil
Opening 4-2 is equipped at the positions face upper grip 3-3 of box top, bottom is equipped with lower collet in the fuel tank and lower collet is located at upper folder
Immediately below head 3-3, the lower collet is equipped with the connecting rod for controlling lower collet folding, and lower collet is using resistance to 300 DEG C
High-temperature material is made.
As shown in figure 3, fuel tank is made of resistance to 300 DEG C of high-temperature material.Fuel tank includes babinet 4-1, is equipped in babinet 4-1
Transformer oil, transformer oil temperature reach as high as 300 DEG C, and the temperature deviation of everywhere transformer oil should be less than ± 1 in babinet 4-1
℃；Coating is equipped at the top of babinet 4-1 and uses for ensureing oil temperature is constant in babinet 4-1 thermal insulation material on the outer surface of babinet 4-1
It is using the motor for being connected with rotary blade in the blender 4-3 of stirring transformer oil, blender 4-3, is to protect in experimentation
It holds blender 4-3 to be stirred continuously, oil temperature temperature value in babinet 4-1 is made to be evenly distributed unanimously, high temperature is contained inside analogue transformer
The flow condition of oil；The sides babinet 4-1 are equipped with the access device 4-4 for connecting temperature sensor, and oil is not from meter in babinet 4-1
Enter and is flowed out at device；Babinet 4-1 is equipped with heating device.
The test method of bonding lacquered wires intensity, includes the following steps under a kind of condition of high temperature：
1）Two self-adhesion enameling copper strap wires 1 are taken, overlapped overlap joint is carried out, lap-joint forms faying surface 1-1, as shown in Figure 4；
Faying surface 1-1, the wide face of two self-adhesion enameling copper strap wires 1 contact with each other, lap of splice 25mm, and self-adhesion enameling copper strap wire 1 is grown
For 14~16cm, the area of record faying surface 1-1.
2）Overlapped two self-adhesion enameling copper strap wires 1 are put into fixture, and faying surface 1-1 is located in folder room, one
Folder can press from both sides two self-adhesion enameling copper strap wires 1 overlapped in room, therefore fixture can press from both sides more self-adhesion enameling copper strap wires 1 simultaneously；It adopts
Faying surface 1-1 is compressed with the mode that bolt 2-2 is tightened, forms sample, sample overall length is 25.5--29.5m.Screw spiral shell
Torque spanner is used when bolt 2-2, and the numerical value of holding torque wrench torque is 55~85N；It is corresponding to be applied to faying surface 1-1's
Pressure is 0.6~2N/mm2.
3）Sample is put into insulating box and is heated, heating temperature is 95~155 DEG C, and heating time is 12~36 hours；It takes
Go out sample, unclamps fixture after being cooled to room temperature.
4）The upper grip 3-3 of tensile testing machine and lower collet are clamped into the both ends of sample respectively, and ensure the overlap joint of sample
Face 1-1 is immersed in the transformer oil of fuel tank, as shown in Figure 2.
5）Apply the upward pulling force being stepped up to adjusting beam 3-4, until lap-joint's separation of sample, records lap-joint
Value of thrust when separation.
6）Value of thrust when being detached according to the area of faying surface 1-1 and lap-joint calculates the adhesive strength of sampleT B 。
Wherein：h 1For bare wire nominal height, R is bare wire radius of corner,ITo be superimposed length,S k For bond area,F maxTo survey
Value of thrust when must detach.
Claims (9)
1. the test device of bonding lacquered wires intensity under a kind of condition of high temperature, it is characterised in that：Including tensile testing machine, fuel tank and
The fixture of sample is formed for clamping line-transect, the tensile testing machine includes pedestal, holder, upper grip, lower collet, adjusts beam,
The holder is mounted on the base, and the adjusting beam is rack-mount and can be moved up and down along holder, and the upper grip is fixed
On adjusting beam, the fuel tank is mounted on the base, and is equipped with and is open at top of oil-tank face upper grip position, bottom in the fuel tank
Portion is equipped with lower collet and lower collet is located at immediately below upper grip.
2. the test device of bonding lacquered wires intensity under the condition of high temperature according to claim 1, it is characterised in that：The folder
Tool includes two pieces of clamping plates disposed in parallel, and several threaded holes are uniformly provided on the clamping plate, is corresponded to across two clamping plates with bolt
Threaded hole two clamping plates are connected, on two clamping plates between two adjacent bolts formed one folder room.
3. the test device of bonding lacquered wires intensity under the condition of high temperature according to claim 2, it is characterised in that：The branch
Frame includes two supporting beams, and two supporting beams are oppositely arranged and are vertically mounted on pedestal both sides, every another of supporting beam face
The side of supporting beam is equipped with sliding rail, and the both ends for adjusting beam are separately mounted on the sliding rail of two supporting beams.
4. the test device of bonding lacquered wires intensity under the condition of high temperature according to claim 3, it is characterised in that：The oil
Case includes babinet, and transformer oil is equipped in babinet, the heat preservation constant for oil temperature in guard box body is coated on the outer surface of babinet
Material, top of the box are equipped with the blender for stirring transformer oil, and babinet side is equipped with for connecting connecing for temperature sensor
Enter device, babinet is equipped with heating device.
5. the test device of bonding lacquered wires intensity under the condition of high temperature according to claim 4, it is characterised in that：The branch
Beam is supportted equipped with the thermometer for detecting oil temperature in fuel tank.
6. the test device of bonding lacquered wires intensity under the condition of high temperature according to claim 5, it is characterised in that：Under described
Collet is equipped with the connecting rod for controlling lower collet folding.
7. the test method of bonding lacquered wires intensity under a kind of condition of high temperature according to the test device described in claim 6,
Include the following steps：
1）Two self-adhesion enameling copper strap wires are taken, overlapped overlap joint is carried out, lap-joint forms faying surface, records the face of faying surface
Product；
2）Overlapped two self-adhesion enameling copper strap wires are put into fixture, and faying surface is located in folder room, is tightened using bolt
Mode faying surface is compressed, formed sample；
3）Sample is put into insulating box and is heated, heating temperature is 95~155 DEG C, and heating time is 12~36 hours；Take out sample
Product unclamp fixture after being cooled to room temperature；
4）The upper grip of tensile testing machine and lower collet are clamped into the both ends of sample respectively, and ensure that the faying surface of sample is immersed in
In the transformer oil of fuel tank；
5）Apply the upward pulling force being stepped up to adjusting beam, when the lap-joint of sample detaches, and record lap-joint detaches
Value of thrust；
6）Value of thrust when being detached according to the area of faying surface and lap-joint calculates the adhesive strength of sampleT B ：
Wherein：h 1For bare wire nominal height, R is bare wire radius of corner,ITo be superimposed length,S k For bond area,F maxTo measure point
From when value of thrust.
8. the test method of bonding lacquered wires intensity under the condition of high temperature according to claim 7, it is characterised in that：The step
Rapid 1）In, it contacts with each other in the wide face of faying surface, two self-adhesion enameling copper strap wires, lap of splice 25mm, self-adhesion enamel-cover copper is flat
Line overall length is 14~16cm.
9. the test method of bonding lacquered wires intensity under the condition of high temperature according to claim 7, it is characterised in that：The step
Rapid 2）In, torque spanner is used when screwing bolts, and the numerical value of holding torque wrench torque is 55~85N；It is corresponding to be applied to
The pressure of faying surface is 0.6~2N/mm2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810538171.8A CN108387514A (en) | 2018-05-30 | 2018-05-30 | The test device and test method of bonding lacquered wires intensity under a kind of condition of high temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810538171.8A CN108387514A (en) | 2018-05-30 | 2018-05-30 | The test device and test method of bonding lacquered wires intensity under a kind of condition of high temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108387514A true CN108387514A (en) | 2018-08-10 |
Family
ID=63072022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810538171.8A Pending CN108387514A (en) | 2018-05-30 | 2018-05-30 | The test device and test method of bonding lacquered wires intensity under a kind of condition of high temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108387514A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580477A (en) * | 2018-11-14 | 2019-04-05 | 中航复合材料有限责任公司 | A kind of automatic placement splices the detection method of intensity with prepreg |
| CN110595912A (en) * | 2019-09-17 | 2019-12-20 | 金杯电工电磁线有限公司 | Enameled wire narrow-edge bending test device and enameled wire narrow-edge bending test method |
| CN112577894A (en) * | 2020-12-08 | 2021-03-30 | 铜陵精达里亚特种漆包线有限公司 | Enameled wire impregnating varnish adhesion testing device and testing method |
| CN113588550A (en) * | 2021-08-31 | 2021-11-02 | 西部超导材料科技股份有限公司 | Testing device and testing method for embedding binding force of superconducting wire |
| CN110595912B (en) * | 2019-09-17 | 2024-05-28 | 金杯电工电磁线有限公司 | Enameled wire narrow-edge bending test device and enameled wire narrow-edge bending test method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580477A (en) * | 2018-11-14 | 2019-04-05 | 中航复合材料有限责任公司 | A kind of automatic placement splices the detection method of intensity with prepreg |
| CN110595912A (en) * | 2019-09-17 | 2019-12-20 | 金杯电工电磁线有限公司 | Enameled wire narrow-edge bending test device and enameled wire narrow-edge bending test method |
| CN110595912B (en) * | 2019-09-17 | 2024-05-28 | 金杯电工电磁线有限公司 | Enameled wire narrow-edge bending test device and enameled wire narrow-edge bending test method |
| CN112577894A (en) * | 2020-12-08 | 2021-03-30 | 铜陵精达里亚特种漆包线有限公司 | Enameled wire impregnating varnish adhesion testing device and testing method |
| CN112577894B (en) * | 2020-12-08 | 2023-05-12 | 铜陵精达里亚特种漆包线有限公司 | Device and method for testing binding force of wire enamel |
| CN113588550A (en) * | 2021-08-31 | 2021-11-02 | 西部超导材料科技股份有限公司 | Testing device and testing method for embedding binding force of superconducting wire |
| CN113588550B (en) * | 2021-08-31 | 2023-06-27 | 西部超导材料科技股份有限公司 | Testing device and testing method for embedding binding force of superconducting wire |
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