Insulation paper blistering and delamination test tool
By designing a bubble layered test tool for insulating paper, applying tension to concentrate internal stress, the problem of difficulty in accurately observing stratification in existing experiments is solved, more obvious and accurate experimental results are achieved, and testing efficiency is improved.
Patent Information
- Application Number
- CN202421135393.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-05-22
AI Technical Summary
It is difficult to accurately observe the stratification situation in existing insulating paper bubble stratification experiments, resulting in less obvious experimental results and it is difficult to obtain accurate results.
A bubble layered test tool for insulating paper is designed, including the base plate, slide rail, slider and pressure plate. The slider is driven to tension the insulating paper through the screw, and a certain tension is applied to make the internal stress formed after heating more concentrated, thereby improving the obviousness of the experimental results.
By applying tension to the insulating paper, the obviousness of the bubble stratification experiment results is significantly improved, the accuracy of the experiment is ensured, the risk of poor material flow is eliminated, and the testing efficiency is improved.
Smart Images
Figure CN222733955U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor insulation paper detection, in particular to an insulation paper blistering and delamination testing tool. Background Art
[0002] As the world pays more attention to environmental protection and sustainable energy development, the market demand for new energy vehicles is gradually increasing. As the core component of new energy vehicles, the technology of drive motors is also constantly developing and innovating, and the performance of insulating paper in motors is even more important. The blistering and stratification of paper will greatly reduce the life of the motor. Because the impulse voltage of IGBT is generally more than 4000 volts, it is easy to break down. Therefore, it is also very important to detect the blistering and stratification of insulating paper materials.
[0003] For the blistering and delamination test of composite insulating materials (GBT 5591.2-2017), an area of about 100 cm 2 The test specimens are subjected to heat for 10-11 minutes at the temperature specified in the single material specification. After the insulating paper absorbs heat, different expansion coefficients will occur between different materials and internal stress will be formed. If the bonding force is not enough to resist this internal stress, delamination will occur. Since the analysis is performed after being taken out of the oven and slowly cooled to room temperature, no external force is applied. At this time, the internal stress of the two materials of different materials (paper and film) is released and shrinks synchronously, and the resulting misalignment displacement is very small. In this case, it is difficult to observe whether there is delamination, resulting in unclear results of the blistering and delamination experiment, and it is difficult for experimenters to obtain accurate results. Utility Model Content
[0004] The utility model aims to provide an insulation paper blistering and delamination testing tool to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] The insulating paper blistering and delamination testing tool comprises a base plate, a slide rail and a slider, wherein a plurality of slide rails are installed side by side at equal intervals on the base plate, and a slider is installed on the slide rail, a screw is installed on one side of the base plate, and the screw is threadedly connected to a threaded through hole correspondingly opened on one side of the base plate, and one end of the screw is rotatably connected to the slider through a bearing installed on the slider, and the slider and the base plate are jointly provided with insulating paper, and a pressing plate is provided on the slider and the base plate, and the pressing plate is located directly above the two ends of the insulating paper, and screw holes are opened on the pressing plate, and fastening screws used in conjunction with the pressing plate are provided on the threaded holes, and the pressing plate is fixedly connected to the slider and the base plate respectively through the fastening screws.
[0007] As a further solution of the utility model: the slider and the bottom plate are both provided with thread grooves used in conjunction with fastening screws.
[0008] As a further solution of the utility model: two handles are symmetrically installed on the bottom plate.
[0009] As a further solution of the utility model: the distance between the two screw holes arranged opposite to each other on the left and right sides of the pressing plate is greater than the width of the insulating paper.
[0010] As a further solution of the utility model: the pressing plate and the sliding block are equal in size.
[0011] As a further solution of the utility model: a hexagonal nut is installed at the other end of the screw.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The utility model can apply a certain tension to the insulating paper during the test, so that the internal stress formed after heating is more concentrated, so that the blistering and delamination test results are more obvious, and the risk of bad materials flowing out from the source is eliminated.
[0014] 2. The utility model is provided with a plurality of slide rails, sliders and pressing plates in parallel, which can apply tension to and test a plurality of insulating papers at the same time, thus greatly improving the efficiency of the blistering and delamination test of the motor insulating paper. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is the structural explosion diagram of the insulation paper blistering and delamination test tooling.
[0016] Figure 2 This is a top view of the local structure of the insulation paper blistering and delamination test tooling.
[0017] 1. Base plate; 2. Slide rail; 3. Slider; 4. Pressure plate; 5. Screw; 6. Insulation paper; 7. Screw hole; 8. Fastening screw; 9. Handle; 10. Threaded through hole; 11. Thread groove; 12. Hexagonal nut; 13. Bearing. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-2In the embodiment of the utility model, the insulating paper blistering and delamination testing tool comprises a base plate 1, a slide rail 2 and a slider 3. A plurality of slide rails 2 are installed on the base plate 1 in parallel and at equal intervals. The slider 3 is installed on the slide rail 2. A screw 5 is installed on one side of the base plate 1. The screw 5 is threadedly connected to a threaded through hole 10 corresponding to one side of the base plate 1. One end of the screw 5 is rotatably connected to the slider 3 through a bearing 13 installed on the slider 3. The slider 3 and the base plate 1 are jointly provided with insulating paper 6. A pressing plate 4 is provided on the slider 3 and the base plate 1. The pressing plate 4 is located directly above the two ends of the insulating paper 6. A screw hole 7 is provided on the pressing plate 4. A fastening screw 8 used in conjunction with the pressing plate 4 is provided on the screw hole 7. The pressing plate 4 is fixedly connected to the slider 3 and the base plate 1 respectively through the fastening screw 8. The slider 3 and the base plate 1 are provided with a threaded groove 11 used in conjunction with the fastening screw 8.
[0020] Two handles 9 are symmetrically mounted on the bottom plate 1 , and the arrangement of the handles 9 can facilitate personnel to carry the tooling.
[0021] The distance between the two screw holes 7 arranged opposite to each other on the pressing plate 4 is greater than the width of the insulating paper 6. This design can prevent the fastening screws 8 from causing damage to the insulating paper 6 during the screwing process.
[0022] The pressing plate 4 and the sliding block 3 are of equal size, and such a design allows the pressing plate 4 and the sliding block 3 to cooperate better to compress the insulating paper 6 .
[0023] A hexagonal nut 12 is installed at the other end of the screw rod 5 . The hexagonal nut 12 is matched with a torque meter. The torque meter is used to measure the tension value borne by the insulating paper 6 .
[0024] The working principle of the utility model is:
[0025] When in use, place the insulating paper 6 of standard width and length on the base plate 1, place the two ends of the insulating paper 6 on the slider 3 and the base plate 1 respectively, and press them by the pressing plate 4. Since the screw 5 is connected to the slider 3, the screw 5 is rotated at this time, and the screw 5 drives the slider 3 to move in the direction of paper tensioning by cooperating with the thread of the base plate 1. After the paper is tensioned, the screw 5 is screwed again by the torque meter, and the tension value on the torque meter is displayed to make the tension value borne by the insulating paper 6 within the tension value range required by the experimental conditions. Then, hold the handle 9 and put the entire device into the oven for baking at a fixed time and temperature. At this time, since a certain tension is applied to the insulating paper 6, the internal stress formed after heating is more concentrated, and the blistering and stratification results are more obvious during the test.
[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. An insulating paper blistering and delamination testing tool, comprising a base plate (1), a slide rail (2) and a slide block (3), characterized in that: A plurality of slide rails (2) are installed on the base plate (1) in parallel and at equal intervals, a slider (3) is installed on the slide rail (2), a screw rod (5) is installed on one side of the base plate (1), the screw rod (5) is threadedly connected to a threaded through hole (10) correspondingly opened on one side of the base plate (1), one end of the screw rod (5) is rotatably connected to the slider (3) via a bearing (13) installed on the slider (3), the slider (3) and the base plate (1) are provided with insulating paper (6), a pressing plate (4) is provided on the slider (3) and the base plate (1), the pressing plate (4) is located directly above the two ends of the insulating paper (6), a screw hole (7) is opened on the pressing plate (4), a fastening screw (8) used in conjunction with the screw hole (7) is provided on the screw hole (7), and the pressing plate (4) is fixedly connected to the slider (3) and the base plate (1) respectively via the fastening screw (8).
2. The insulating paper blistering and delamination testing tool according to claim 1, characterized in that: The slider (3) and the base plate (1) are both provided with thread grooves (11) for use with the fastening screws (8).
3. The insulating paper blistering and delamination testing tool according to claim 1, characterized in that: Two handles (9) are symmetrically mounted on the base plate (1).
4. The insulating paper blistering and delamination testing tool according to claim 1, characterized in that: The distance between the two screw holes (7) arranged opposite to each other on the pressing plate (4) is greater than the width of the insulating paper (6).
5. The insulating paper blistering and delamination testing tool according to claim 1, characterized in that: The pressing plate (4) and the sliding block (3) are of equal size.
6. The insulating paper blistering and delamination testing tool according to claim 1, characterized in that: A hexagonal nut (12) is mounted on the other end of the screw rod (5).