Air breakdown voltage testing tool
By adopting a multi-axis fine-tuning structure in the air breakdown voltage test tooling, the position of the detection steel needle is accurately adjusted, and the problem of insufficient accuracy of the existing test tooling is solved, and high-precision insulation voltage testing is achieved.
Patent Information
- Application Number
- CN202421674651.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The existing air breakdown voltage test tooling cannot guarantee the accuracy of the air breakdown voltage, resulting in inaccurate test results.
An air breakdown voltage testing tool is designed, using an XY axis fine-tuning seat, a Y axis fine-tuning micrometer, an X axis fine-tuning micrometer, a Z axis fine-tuning micrometer and a Z axis fine-tuning micrometer. These fine-tuning mechanisms accurately adjust the position of the detection steel needle to achieve high-precision testing of the insulation voltage.
The 10um level positioning accuracy and repeatability accuracy of detecting the steel needle position is achieved, which can more accurately test the insulation voltage between extremely small distances of the steel needle, and is suitable for air breakdown voltage testing at different spacings.
Smart Images
Figure CN222979719U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of voltage test tooling, in particular to an air breakdown voltage test tooling. Background Technique
[0002] When the voltage at which the gap between electrodes with air as the dielectric breaks down, due to the imperfect gas discharge theory, the breakdown voltage of the air gap cannot be accurately calculated. In practice, it is mostly determined through experiments or approximately estimated using empirical formulas, and usually, a test is carried out through an air breakdown voltage test tooling.
[0003] Common air breakdown voltage test toolings usually clamp steel needles through a steel needle clamp, then connect both ends of the steel needle clamp to a voltage generator using high-voltage test wires, and then carry out the required voltage test. Common air breakdown voltage test toolings cannot guarantee the accuracy of the air breakdown voltage. Therefore, an air breakdown voltage test tooling is proposed for the above problems. Content of the Utility Model
[0004] The purpose of the utility model is to provide an air breakdown voltage test tooling to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] An air breakdown voltage test tooling includes a base, a first steel needle clamp, and a second steel needle clamp. The upper end surface of the right half of the base is fixedly connected with a Z-axis fine adjustment seat. A Z-axis fine adjustment micrometer is installed on one side of the Z-axis fine adjustment seat. A Z-axis fixing knob for restricting the operation of the Z-axis fine adjustment micrometer is arranged on one side of the Z-axis fine adjustment seat. A first partition board is arranged on the top of the Z-axis fine adjustment seat. The upper end surface of the first partition board is fixedly connected with a first clamping plate with an inverted L-shaped longitudinal section through bolts. The second steel needle clamp is arranged between a group of first clamping plates. The upper end surface of the left half of the base is fixedly connected with an XY-axis fine adjustment seat. The XY-axis fine adjustment seat is composed of an X-axis fine adjustment seat and a Y-axis fine adjustment seat that slide relative to each other front and back. A Y-axis fine adjustment micrometer is installed on one side of the Y-axis fine adjustment seat. A Y-axis fixing knob for restricting the operation of the Y-axis fine adjustment micrometer is arranged on one side of the Y-axis fine adjustment seat. An X-axis fine adjustment micrometer is installed on one side of the X-axis fine adjustment seat. An X-axis fixing knob for restricting the operation of the X-axis fine adjustment micrometer is arranged on one side of the X-axis fine adjustment seat. A second partition board is arranged on the upper end surface of the X-axis fine adjustment seat. The upper end surface of the second partition board is fixedly connected with a second clamping plate with an inverted L-shaped longitudinal section through bolts. The first steel needle clamp is arranged between a group of second clamping plates.
[0007] Preferably, the first clamping plates are symmetrically arranged, and the second steel needle clamp penetrates through the first clamping plates.
[0008] Preferably, the second clamping plate is symmetrically arranged, and the first steel needle clamp penetrates through the second clamping plate.
[0009] Preferably, the Y-axis micrometer can drive the X-axis fine adjustment base and the Y-axis fine adjustment base to move relatively back and forth, and the X-axis micrometer can drive the second partition plate and the X-axis fine adjustment base to move relatively left and right.
[0010] Preferably, the Z-axis micrometer can drive the first partition plate and the Z-axis fine adjustment base to move relatively up and down.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0012] In the present utility model, the structure composed of the XY-axis fine adjustment bases, Y-axis micrometer, X-axis micrometer, Z-axis fine adjustment base and Z-axis micrometer is provided. The detection steel needles are respectively clamped by the first steel needle clamp and the second steel needle clamp. By adjusting the Y-axis micrometer and the X-axis micrometer, the X-axis fine adjustment base and the Y-axis fine adjustment base move relatively, and the second partition plate and the X-axis fine adjustment base move relatively, so as to adjust the position of the first steel needle clamp positioned on the second partition plate through the second clamping plate. By adjusting the Z-axis micrometer, the first partition plate and the Z-axis fine adjustment base move relatively, so as to adjust the position of the second steel needle clamp positioned on the first partition plate through the first clamping plate. The positioning accuracy and the repeat accuracy can reach the level of 10um, and the insulation voltage between extremely small distances of the detection steel needles can be tested more precisely. Moreover, the alignment and distance adjustment between the two detection steel needles are realized by using the technology of three-axis movable fine adjustment, so as to realize the test of the air breakdown voltage at different distances between the two probes. Description of the Drawings
[0013] Figure 1 is the overall three-dimensional structure schematic diagram of the present utility model;
[0014] Figure 2 is the overall front view structure schematic diagram of the present utility model;
[0015] Figure 3 is the overall right view structure schematic diagram of the present utility model;
[0016] Figure 4 is the overall left view structure schematic diagram of the present utility model;
[0017] Figure 5 is the overall top view structure schematic diagram of the present utility model;
[0018] Figure 6 is the overall bottom view structure schematic diagram of the present utility model.
[0019] In the figure: 1. Base; 2. Z-axis fine adjustment seat; 3. First clamping plate; 4. First partition plate; 5. Second partition plate; 6. X-axis fixing knob; 7. XY-axis fine adjustment seat; 701. X-axis fine adjustment seat; 702. Y-axis fine adjustment seat; 8. Y-axis fine adjustment micrometer; 9. X-axis fine adjustment micrometer; 10. First steel needle clamp; 11. Second clamping plate; 12. Y-axis fixing knob; 13. Z-axis fixing knob; 14. Second steel needle clamp; 15. Z-axis fine adjustment micrometer. Detailed implementation manners
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0021] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present application. As used herein, unless otherwise clearly specified by the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0022] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.
[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.
[0024] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used here to describe the spatial positional relationship of one device or feature to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.
[0025] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.
[0026] Please refer to Figure 1-6 , the present utility model provides a technical solution:
[0027] An air breakdown voltage test tooling, comprising a base 1, a first steel needle clamp 10 and a second steel needle clamp 14. On the upper end surface of the right half of the base 1, a Z-axis fine adjustment seat 2 is fixedly connected. On one side of the Z-axis fine adjustment seat 2, a Z-axis fine adjustment micrometer 15 is installed. On one side of the Z-axis fine adjustment seat 2, a Z-axis fixing knob 13 is provided to limit the operation of the Z-axis fine adjustment micrometer 15. On the top of the Z-axis fine adjustment seat 2, a first partition plate 4 is provided. On the upper end surface of the first partition plate 4, a first clamping plate 3 with an inverted L-shaped longitudinal section is fixedly connected by bolts. The second steel needle clamp 14 is arranged between a group of first clamping plates 3. On the upper end surface of the left half of the base 1, an XY-axis fine adjustment seat 7 is fixedly connected. The XY-axis fine adjustment seat 7 is composed of an X-axis fine adjustment seat 701 and a Y-axis fine adjustment seat 702 that slide relative to each other front and back. On one side of the Y-axis fine adjustment seat 702, a Y-axis fine adjustment micrometer 8 is installed. On one side of the Y-axis fine adjustment seat 702, a Y-axis fixing knob 12 is provided to limit the operation of the Y-axis fine adjustment micrometer 8. On one side of the X-axis fine adjustment seat 701, an X-axis fine adjustment micrometer 9 is installed. On one side of the X-axis fine adjustment seat 701, an X-axis fixing knob 6 is provided to limit the operation of the X-axis fine adjustment micrometer 9. On the upper end surface of the X-axis fine adjustment seat 701, a second partition plate 5 is provided. On the upper end surface of the second partition plate 5, a second clamping plate 11 with an inverted L-shaped longitudinal section is fixedly connected by bolts. The first steel needle clamp 10 is arranged between a group of second clamping plates 11.
[0028] The first clamping plates 3 are symmetrically arranged, and the second steel needle clamp 14 penetrates through the first clamping plates 3. This setting enables the positioning of the second steel needle clamp 14 through the first clamping plates 3. The second clamping plates 11 are symmetrically arranged, and the first steel needle clamp 10 penetrates through the second clamping plates 11. This setting enables the positioning of the first steel needle clamp 10 through the second clamping plates 11. The Y-axis fine adjustment micrometer 8 can drive the X-axis fine adjustment seat 701 and the Y-axis fine adjustment seat 702 to move relative to each other front and back. The X-axis fine adjustment micrometer 9 can drive the second partition plate 5 and the X-axis fine adjustment seat 701 to move relative to each other left and right. This setting enables the Y-axis fine adjustment micrometer 8 and the X-axis fine adjustment micrometer 9 to adjust the position of the second steel needle clamp 14. The Z-axis fine adjustment micrometer 15 can drive the first partition plate 4 and the Z-axis fine adjustment seat 2 to move relative to each other up and down. This setting enables the Z-axis fine adjustment micrometer 15 to adjust the position of the first steel needle clamp 10.
[0029] Workflow: When conducting an air breakdown voltage test using the air breakdown voltage test tooling, place the entire tooling in the appropriate position through the base 1. Clamp the two detection steel needles respectively through the first steel needle clamp 10 and the second steel needle clamp 14. Use the Z-axis fine-tuning micrometer 15 to adjust the height of the steel needles. At this time, a relative displacement occurs between the first partition 4 and the Z-axis fine-tuning base 2, thereby adjusting the position of the second steel needle clamp 14 positioned on the first partition 4 through the first clamping plate 3, so that the two steel needles are aligned in the Z-axis direction. Then tighten the Z-axis fixing knob 13 so that the detection steel needle clamped by the second steel needle clamp 14 no longer moves. By adjusting the Y-axis fine-tuning micrometer 8 and the X-axis fine-tuning micrometer 9 respectively, relative displacements occur between the X-axis fine-tuning base 701 and the Y-axis fine-tuning base 702, and a relative displacement occurs between the second partition 5 and the X-axis fine-tuning base 701, thereby adjusting the position of the first steel needle clamp 10 positioned on the second partition 5 through the second clamping plate 11, so that the two steel needles are aligned in the X-axis and Y-axis directions. Then tighten the Y-axis fixing knob 12 and the X-axis fixing knob 6 respectively, so that the detection steel needle clamped by the first steel needle clamp 10 no longer moves. The X-axis fine-tuning base 701 and the Y-axis fine-tuning base 702 form the XY-axis fine-tuning base 7. Then connect the two ends of the first steel needle clamp 10 and the second steel needle clamp 14 to the voltage generator using high-voltage test wires respectively. After that, perform the required voltage test. The positioning accuracy and repeatability accuracy of the micrometer can reach the 10um level, which can more precisely test the insulation voltage between the detection steel needles at extremely small distances. Moreover, the alignment and distance adjustment between the two detection steel needles are achieved by using the technology of three-axis movable fine-tuning, so as to realize the test of the air breakdown voltage at different spacings between the two probes.
[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An air breakdown voltage test fixture, comprising a base (1), a first steel needle fixture (10) and a second steel needle fixture (14), characterized in that: The upper end surface of the right half of the base (1) is fixedly connected to a Z-axis fine-tuning seat (2), a Z-axis fine-tuning micrometer (15) is installed on one side of the Z-axis fine-tuning seat (2), and a Z-axis fixing knob (13) that can limit the operation of the Z-axis fine-tuning micrometer (15) is provided on one side of the Z-axis fine-tuning seat (2). A first partition (4) is provided on the top of the Z-axis fine-tuning seat (2), and the upper end surface of the first partition (4) is fixedly connected to a first clamp (3) whose longitudinal section is in an inverted L shape by bolts, and the second steel needle clamp (14) is arranged between a group of first clamps (3). The upper end surface of the left half of the base (1) is fixedly connected to an XY-axis fine-tuning seat (7), and the XY-axis fine-tuning seat (7) is composed of an X-axis fine-tuning seat (701) and a Y-axis fine-tuning seat (702) that slide back and forth relative to each other. The invention is composed of a Y-axis fine-tuning seat (702), a Y-axis fine-tuning micrometer (8) is installed on one side of the Y-axis fine-tuning seat (702), a Y-axis fixing knob (12) capable of limiting the operation of the Y-axis fine-tuning micrometer (8) is arranged on one side of the Y-axis fine-tuning seat (702), an X-axis fine-tuning micrometer (9) is installed on one side of the X-axis fine-tuning seat (701), a X-axis fixing knob (6) capable of limiting the operation of the X-axis fine-tuning micrometer (9) is arranged on one side of the X-axis fine-tuning seat (701), a second partition plate (5) is arranged on the upper end surface of the X-axis fine-tuning seat (701), a second clamp plate (11) having a longitudinal section in an inverted L shape is fixedly connected to the upper end surface of the second partition plate (5) by bolts, and the first steel needle clamp (10) is arranged between a group of second clamp plates (11).
2. The air breakdown voltage test tool according to claim 1, characterized in that: The first clamping plate (3) is symmetrically arranged, and the second steel needle clamp (14) passes through the first clamping plate (3).
3. The air breakdown voltage test tool according to claim 1, characterized in that: The second clamping plate (11) is symmetrically arranged, and the first steel needle clamp (10) passes through the second clamping plate (11).
4. The air breakdown voltage test tool according to claim 1, characterized in that: The Y-axis fine-tuning micrometer (8) can drive the X-axis fine-tuning seat (701) and the Y-axis fine-tuning seat (702) to move forward and backward relative to each other, and the X-axis fine-tuning micrometer (9) can drive the second partition plate (5) and the X-axis fine-tuning seat (701) to move left and right relative to each other.
5. The air breakdown voltage test tool according to claim 1, characterized in that: The Z-axis fine-tuning micrometer (15) can drive the first partition plate (4) and the Z-axis fine-tuning seat (2) to move up and down relative to each other.