Anti-overstretching type aging detection tool for vacuum arc-extinguishing chamber

Abstract

The utility model relates to the technical field of arc extinguish chambers, and discloses a vacuum arc extinguish chamber anti-overstretching type aging detection tool, which comprises a support cylinder, a support plate, a connector, an insertion sheet and a limit pin, the support cylinder is in threaded connection with the connector, the support plate is arranged between the connector and the support cylinder, and the insertion sheet is inserted into the support cylinder after the connector is connected with a movable conducting rod. The supporting plate can be synchronously lifted by lifting the connector, at the moment, the insertion piece inserted between the supporting cylinder and the supporting plate and the limiting pins arranged on the two sides of the supporting cylinder act together, the lifting height of the connector is accurately controlled, the connector is effectively prevented from excessively compressing the corrugated pipe, the service life of the corrugated pipe is remarkably prolonged, and the maintenance cost is reduced. According to the utility model, the accuracy and repeatability of detection are improved, the operation process is simplified, the operation difficulty is reduced, the safety performance and adaptability of equipment are enhanced, and the aging detection device is suitable for aging detection of various vacuum arc-extinguishing chambers, and has important significance for improving the overall quality of the vacuum arc-extinguishing chambers and prolonging the service life of the vacuum arc-extinguishing chambers.

Description

Technical Field

[0001] This utility model belongs to the field of arc-extinguishing chamber technology, specifically relating to a vacuum arc-extinguishing chamber anti-overstretching aging testing fixture. Background Technology

[0002] During the service life of a vacuum switch, the vacuum interrupter, in addition to handling the operating current and short-circuit current, also serves as a disconnector. To ensure the safe and reliable operation of the vacuum switch in the power system, the insulation capability of the vacuum interrupter, as its core component, is crucial. Before leaving the factory, vacuum interrupters undergo high-voltage aging, vacuum testing, and withstand voltage testing to ensure product quality. During these tests, the moving and stationary contacts of the vacuum interrupter need to be pulled apart to a certain distance. Currently, existing opening distance fixtures have the following problems: for interrupters with relatively small self-closing force, over-tightening during the threaded connection process can easily cause excessive compression of the bellows, thus affecting the lifespan of the interrupter. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned problems and provide a vacuum interrupter anti-overstretching aging test fixture, which can ensure that the connector will not excessively compress the bellows when connected to the moving guide rod, thereby improving the service life of the bellows and thus improving the quality reliability and stability of the vacuum interrupter.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a vacuum interrupter anti-stretching aging test fixture, including a support cylinder located on the moving end cover plate of the interrupter. The support cylinder is threadedly connected to a connector, which is detachably connected to the moving conductive rod of the interrupter. A support plate is provided between the support cylinder and the connector. Pulling the connector can lift the support plate. An insert is provided between the support plate and the support cylinder. Limiting pins are inserted on both sides of the support cylinder to limit the opening height of the support plate.

[0006] A further improvement of this utility model is that the upper end of the connector is provided with a hand-tightening handle, and the connector is provided with threads.

[0007] A further improvement of this utility model is that the insert is a U-shaped insert.

[0008] A further improvement of this utility model is that the support plate is a stainless steel support plate and the connector is a stainless steel connector.

[0009] A further improvement of this invention is that the outer diameter of the support plate is adapted to the inner diameter of the support cylinder.

[0010] A further improvement of this utility model is that keyways are symmetrically provided on both sides of the support plate, and the keyways are distributed at 180°.

[0011] A further improvement of this utility model is that a threaded hole is provided in the middle of the support plate, and one end of the connector passes through the threaded hole and is detachably connected to the moving conductive rod of the arc extinguishing chamber.

[0012] A further improvement of this utility model is that pin holes are symmetrically provided on both sides of the threaded hole.

[0013] A further improvement of this utility model is that pin holes are provided on both sides of the support cylinder, and a limiting pin is inserted into the pin holes.

[0014] A further improvement of this utility model is that the support cylinder is made of stainless steel, and the inner diameter of the support cylinder matches the outer diameter of the guide sleeve fixing ring of the arc extinguishing chamber.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention provides a vacuum interrupter aging test fixture designed to prevent overstretching. A connector is threaded onto a support cylinder, and a support plate is placed between the connector and the support cylinder. When the connector is connected to the moving conductive rod, pulling the connector simultaneously lifts the support plate. At this point, the insert between the support cylinder and the support plate, along with the limiting pins on both sides of the support cylinder, work together to precisely control the lifting height of the connector, effectively preventing excessive compression of the bellows by the connector. This significantly extends the service life of the bellows and reduces maintenance costs. This invention not only improves the accuracy and repeatability of the test, simplifies the operation process, and reduces operational difficulty, but also enhances the safety performance and adaptability of the equipment. It is suitable for aging tests of various vacuum interrupters and is of great significance for improving the overall quality and extending the service life of vacuum interrupters.

[0017] Furthermore, the upper end of the connector is equipped with a hand-tightening handle. The design of the hand-tightening handle allows the operator to easily grip and rotate or pull the connector, reducing operation time, lowering the difficulty of operation, and improving overall work efficiency.

[0018] Furthermore, the insert is U-shaped, which allows it to be easily inserted into the gap between the support cylinder and the support plate. The U-shaped opening avoids the connector, increasing the flexibility and adaptability of the insert.

[0019] Furthermore, keyways are symmetrically provided on both sides of the support plate. The keyways are designed to cleverly avoid the limiting pins on both sides of the support cylinder, so that the support plate can be smoothly screwed down after being threaded into the connector. Attached Figure Description

[0020] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the present invention and do not specifically limit the shapes and proportions of the components of the present invention.

[0021] Figure 1 This is the main view of the vacuum interrupter anti-overstretching type aging test fixture of this utility model;

[0022] Figure 2 This is a cross-sectional view of the vacuum interrupter chamber anti-overstretching aging test fixture of this utility model;

[0023] Figure 3 This is a structural diagram of the support cylinder for the vacuum interrupter chamber anti-overstretching aging test fixture of this utility model;

[0024] Figure 4 This is a structural diagram of the support plate for the vacuum interrupter chamber anti-overstretching aging test fixture of this utility model;

[0025] Figure 5 This is a structural diagram of the connector of the vacuum interrupter anti-overstretching aging test fixture of this utility model;

[0026] Figure 6 This is a structural diagram of the insert plate of the vacuum interrupter chamber anti-overstretching aging test fixture of this utility model.

[0027] The components include: 1. support cylinder; 2. support plate; 3. connector; 4. insert; 5. limit pin; 6. pin hole; 7. keyway; 8. threaded hole; 9. pin hole. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The present invention will now be described in further detail with reference to the accompanying drawings:

[0035] like Figures 1 to 6As shown, this utility model provides a vacuum interrupter anti-overstretching aging test fixture, including a support cylinder 1, a support plate 2, a connector 3, a insert 4, a limiting pin 5, a pin insertion hole 6, a keyway 7, a threaded hole 8, and a pin hole 9. The support cylinder 1 is stably placed on the moving end cover plate of the vacuum interrupter. The connector 3 is threadedly connected to the middle of the support cylinder 1. This connection method not only facilitates installation and disassembly but also ensures a tight and reliable detachable connection between the connector 3 and the moving conductive rod of the interrupter, thereby improving the adaptability and flexibility of the fixture. A support plate 2 is provided between the support cylinder 1 and the connector 3. Pulling the connector 3 can lift the support plate 2 together. An insert 4 is inserted between the support plate 2 and the support cylinder 1. Limiting pins 5 are inserted on both sides of the support cylinder 1. The limiting pins 5 limit the maximum opening height of the support plate 2, effectively preventing equipment damage or safety hazards caused by excessive stretching during the aging test, and greatly improving the safety performance and service life of the fixture.

[0036] The distance from the limiting pin 5 to the bottom of the support cylinder 1 minus the maximum opening height equals the thickness of the support plate 2.

[0037] As a preferred option, the support cylinder 1 is made of wear-resistant stainless steel, and the inner diameter of the support cylinder 1 matches the outer diameter of the guide sleeve fixing ring of the arc extinguishing chamber.

[0038] like Figure 2 and Figure 6 As shown, the insert 4 is U-shaped. The U-shaped insert design allows it to easily slide into the gap between the support cylinder 1 and the support plate 2, greatly simplifying the installation process. At the same time, its U-shaped opening cleverly avoids the connector 3, avoiding spatial conflicts during installation and making the entire installation process smoother and more efficient. In addition, the U-shaped insert is easy to install and remove. When maintenance or replacement is required, operators can complete the task quickly and easily, which not only reduces maintenance costs but also improves work efficiency.

[0039] like Figure 3 As shown, pin holes 6 are provided on both sides of the support cylinder 1. A limiting pin 5 is inserted into the pin hole 6. After the limiting pin 5 is inserted into the pin hole 6, it can limit the support plate 2 to prevent it from moving excessively, thereby avoiding excessive compression and torque on the bellows.

[0040] like Figure 4As shown, keyways 7 are symmetrically provided on both sides of the support plate 2. The keyways 7 are distributed at 180°. When the support plate 2 is installed inside the support cylinder 1, the keyways 7 can cleverly avoid the limiting pins 5 on both sides of the support cylinder 1, so that the support plate 2 can be screwed down smoothly after being threadedly connected to the connector 3. In addition, a threaded hole 8 is provided in the middle of the support plate 2. The threaded hole 8 is an internal threaded hole. Pin holes 9 are symmetrically provided on both sides of the threaded hole 8 away from the keyways 7. When it is necessary to disassemble the tooling, a pin is inserted into the pin hole 9 to prevent the support plate 2 from rotating when disassembling the connector 3, which facilitates disassembly.

[0041] As a preferred option, the support plate 2 is made of wear-resistant stainless steel, which enables the support plate 2 to better resist the wear caused by friction. At the same time, the outer diameter of the support plate 2 is matched with the inner diameter of the support cylinder 1, ensuring that the support plate 2 can be tightly installed inside the support cylinder 1, reducing structural instability caused by gaps or looseness.

[0042] like Figure 5 As shown, the upper end of the connector 3 is provided with a hand-tightening handle. The design of the hand-tightening handle allows the operator to easily hold and rotate or lift the connector 3, reducing operation time, lowering the difficulty of operation, and improving overall work efficiency.

[0043] As a preferred option, the connector 3 is made of stainless steel and has threads. The threads on the connector 3 are external threads, which are matched with the internal threads of the threaded hole 8, so that one end of the connector 3 passes through the threaded hole 8 and can be detachably connected to the moving conductive rod of the arc extinguishing chamber.

[0044] How to use:

[0045] First, place the support cylinder 1 on the moving end cover plate of the arc-extinguishing chamber. Fix the limiting pin 5 on the side of the support cylinder 1 into the pin insertion hole. Then, thread the support plate 2 and the connector 3 together. Next, screw the connected support plate 2 and connector 3 downwards into the moving conductive rod of the arc-extinguishing chamber through the thread of the connector 3 until the upper plane of the support plate 2 is lower than the lower plane of the limiting pin 5. Then, rotate the support plate 2 90° and stop rotating the keyway on the support plate 2 at a position of 90° with the limiting pin 5. Lift the connector 3, which will lift the support plate 2. Due to the presence of the limiting pin 5, the support plate 2 will not be able to rise further after reaching a certain height, thus avoiding excessive stretching of the moving conductive rod of the arc-extinguishing chamber. Finally, after the support plate is lifted to the appropriate position, insert the designed U-shaped insert 4. At this time, the thickness of the insert 4 is the actual opening distance for the aging test of the arc-extinguishing chamber. This utility model designs a limiting support cylinder 1 and a connector 3 that cooperates with the support cylinder 1. The connector 3 connects the support plate 2 and the moving conductive rod of the arc-extinguishing chamber through a thread. After the connector 3 and the moving conductive rod are connected, lifting the connector 3 will simultaneously lift the support plate 2. The limiting pin 5 of the support cylinder 1 will lock the support plate 2 to prevent it from moving excessively, thereby avoiding excessive compression and torque on the bellows.

[0046] Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the foregoing description. Therefore, the scope of this teaching should not be determined by reference to the foregoing description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed utility model subject matter.

[0047] The above content provides a further detailed description of this utility model. It should not be considered that the specific embodiments of this utility model are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the scope of protection of this utility model as defined by the submitted claims.

Claims

1. A vacuum interrupter anti-overstretching type burn-in detection tool, characterized in that, The application relates to an arc extinguishing chamber movable end cover plate supporting cylinder (1) which is screw-connected with a connecting head (3) and detachably connected with a movable conducting rod of the arc extinguishing chamber, wherein a supporting plate (2) is arranged between the supporting cylinder (1) and the connecting head (3), the connecting head (3) can drive the supporting plate (2) to be lifted by pulling, an insertion sheet (4) is arranged between the supporting plate (2) and the supporting cylinder (1), limiting pins (5) are arranged on both sides of the supporting cylinder (1), and the limiting pins (5) are used for limiting the pulling height of the supporting plate (2).

2. The over-stretching type aging detection tool for vacuum interrupter according to claim 1, characterized in that, The upper end of the connecting head (3) is provided with a hand screw handle, and the connecting head (3) is provided with a thread.

3. The over-stretching type aging detection tool for vacuum interrupter according to claim 1, characterized in that, The insertion sheet (4) is a U-shaped insertion sheet.

4. The over-stretching type aging detection tool for vacuum interrupter according to claim 1, characterized in that, The supporting plate (2) is a stainless steel supporting plate, and the connecting head (3) is a stainless steel connecting head.

5. The over-stretching type aging detection tool for vacuum interrupter according to claim 1, characterized in that, The outer diameter of the supporting plate (2) is matched with the inner diameter of the supporting cylinder (1).

6. The over-stretching type aging detection tool for vacuum interrupter according to claim 1, characterized in that, Key grooves (7) are symmetrically arranged on both sides of the supporting plate (2) and are distributed at 180 degrees.

7. The over-stretching type aging detection tool for vacuum interrupter according to claim 1, characterized in that, A threaded hole (8) is arranged in the middle of the supporting plate (2), and one end of the connecting head (3) is detachably connected with the movable conducting rod of the arc extinguishing chamber through the threaded hole (8).

8. The over-stretching type aging detection tool for vacuum interrupter according to claim 7, characterized in that, Pin holes (9) are symmetrically arranged on both sides of the threaded hole (8).

9. The over-stretching type aging detection tool for vacuum interrupter according to claim 1, characterized in that, Pin insertion holes (6) are arranged on both sides of the supporting cylinder (1), and the limiting pins (5) are inserted into the pin insertion holes (6).

10. The over-stretching type aging detection tool for vacuum interrupter according to claim 1, characterized in that, The supporting cylinder (1) is a stainless steel supporting cylinder, and the inner diameter of the supporting cylinder (1) is matched with the outer diameter of a guiding sleeve fixing ring of the arc extinguishing chamber.

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