Ceramic ring for vacuum arc-extinguishing chamber

Abstract

The utility model belongs to the field of vacuum arc extinguish chambers, and discloses a ceramic ring for a vacuum arc extinguish chamber. Two ends of the ceramic ring can be clamped with the ceramic shell, a mounting ring is arranged in the other end of the ceramic ring and is fixedly connected with the ceramic shell, the mounting ring is used for being clamped with the movable cover plate, the diameter A1 of one end of the ceramic ring is smaller than the diameter A2 of the other end of the ceramic ring, one end of the ceramic ring is provided with a U-shaped opening, and the other end of the ceramic ring is provided with a polygonal opening; the diameter C1 of the top end of the U-shaped opening is smaller than the diameter C2 of one end of the outer side of the polygonal opening, distinguishing is facilitated, the porcelain shell and the movable cover plate are positioned through positioning of the porcelain ring 1 to ensure that products are not subjected to sealing deviation, the furnace feeding amount is not affected, and interference of various uncertain factors such as skill difference of assembling personnel, forklift stability and furnace frame flatness in the product welding process can be eliminated. The product quality can be ensured, and the technical problem that the consistency of the vacuum arc-extinguishing chamber cannot be ensured due to the fact that the existing vacuum arc-extinguishing chamber is not provided with a special positioning auxiliary device in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vacuum arc-extinguishing chamber technical field relates to a porcelain ring for vacuum arc-extinguishing chamber. BACKGROUND

[0002] Vacuum arc-extinguishing chamber is the key component in medium and high voltage power switch device, mainly used for extinguishing arc produced when circuit is broken. Dynamic end and static end are the connecting part of current in and out of arc-extinguishing chamber, play the key role of conducting electricity and guiding arc movement in the arc-extinguishing process, and there is no special positioning auxiliary device between dynamic end, static end and porcelain shell, and the consistency of vacuum arc-extinguishing chamber cannot be guaranteed when any factor fluctuates.

[0003] Without positioning assistance, assembly personnel need to finely align and install multiple components. It is not only necessary to ensure that the relative position of dynamic end and static end and porcelain shell is accurate in horizontal direction, but also necessary to maintain appropriate spacing and angle in vertical direction, and assembly personnel need to have high spatial perception ability and hand-eye coordination ability. SUMMARY

[0004] The utility model discloses a porcelain ring for vacuum arc-extinguishing chamber, and solves the technical problem that the existing vacuum arc-extinguishing chamber in the prior art does not have a special positioning auxiliary device and cannot guarantee the consistency of the vacuum arc-extinguishing chamber.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a porcelain ring for vacuum arc-extinguishing chamber includes: the porcelain ring is used to be fixedly connected with a porcelain shell, an installation ring is arranged on the other end of the porcelain ring, and the installation ring is used to be fixedly connected with a dynamic cover plate, and the installation ring is fixedly connected with the porcelain ring.

[0006] Further, one end of the porcelain ring has a diameter A1, the other end has a diameter A2, and the installation ring has a diameter B.

[0007] Further, the diameter A1 of one end of the porcelain ring is less than the diameter A2 of the other end of the porcelain ring.

[0008] Further, one end of the porcelain ring is provided with a U-shaped opening, and the diameter of the top end of the U-shaped opening is C1.

[0009] Further, the other end of the porcelain ring is provided with a polygonal opening, and the diameter of the outer end of the polygonal opening is C2.

[0010] Further, the diameter C1 of the top end of the U-shaped opening is less than the diameter C2 of the outer end of the polygonal opening.

[0011] Further, one end of the porcelain ring is provided with a U-shaped opening, and the number of the U-shaped openings is 2N, and N is greater than or equal to 1.

[0012] Further, the porcelain ring is provided with polygonal openings at the other end, and the number of the polygonal openings is 2N, N is greater than or equal to 1.

[0013] Further, the U-shaped opening is matched with the number of polygonal openings.

[0014] Further, the porcelain ring is made of ceramic material.

[0015] Compared with the prior art, the porcelain ring has the following beneficial technical effects:

[0016] The utility model discloses a porcelain ring for vacuum arc-extinguishing chamber, and the porcelain ring is clamped at both ends with a porcelain shell, and a mounting ring is clamped with a movable cover plate, the porcelain shell and the movable cover plate are positioned through the porcelain ring, the coaxiality of the vacuum arc-extinguishing chamber is ensured, and the insulation performance of the vacuum arc-extinguishing chamber is further improved.

[0017] The utility model discloses a porcelain ring for vacuum arc-extinguishing chamber, and the porcelain ring is clamped at both ends with a porcelain shell, and a mounting ring is clamped with a movable cover plate, the porcelain shell and the movable cover plate are positioned through the porcelain ring, the coaxiality of the vacuum arc-extinguishing chamber is ensured, and the insulation performance of the vacuum arc-extinguishing chamber is further improved.

[0018] The utility model discloses a porcelain ring for vacuum arc-extinguishing chamber, and the porcelain ring is made of ceramic material, so that the influence of excessive heat capacity on product welding process during the furnace process is avoided, and kinetic energy consumption is not additionally increased.

[0019] The utility model discloses a porcelain ring for vacuum arc-extinguishing chamber, and the porcelain ring is provided with a U-shaped opening at one end and polygonal openings at the other end, so that the assembly process is simple, and the form and position tolerance is improved. DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, and for the ordinary skilled in the art, other related drawings can also be obtained without the creative labor on the premise of the drawings.

[0021] Figure 1 It is a structure schematic view of the utility model discloses a porcelain ring for vacuum arc-extinguishing chamber;

[0022] Figure 2 It is a front view of the utility model discloses a porcelain ring for vacuum arc-extinguishing chamber;

[0023] Figure 3 It is a structure schematic view of the porcelain ring installation in the embodiment of the utility model.

[0024] Signs:

[0025] 1-porcelain ring. CONCRETE EMBODIMENT

[0026] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0027] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof, such as a process, method, system, product or device containing a series of steps or units, do not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] The present application will be described in further detail below in conjunction with the drawings:

[0029] Embodiment 1

[0030] The porcelain ring for the vacuum arc-extinguishing chamber of the present application is fixedly connected with the porcelain shell and the movable cover plate, so as to realize accurate positioning thereof. If the positions of the porcelain shell and the movable cover plate deviate, various problems may occur in the subsequent use of the product, such as poor sealing, reduced electrical performance, etc. If the positions of the porcelain shell and the movable cover plate deviate, various problems may occur in the subsequent use of the product, such as poor sealing, reduced electrical performance, etc.

[0031] The present application provides a porcelain ring for a vacuum arc-extinguishing chamber, as shown in Figure 1 The porcelain ring 1 is used for fixedly connecting with the porcelain shell, and the other end of the porcelain ring 1 is provided with a mounting ring on the inner side, which is used for fixedly connecting with the movable cover plate, and the mounting ring is fixedly connected with the porcelain ring 1.

[0032] Specifically, the porcelain ring 1 has different sizes at both ends, with one end having a diameter A1 and the other end having a diameter A2. The diameter A2 of the other end of the porcelain ring 1 is larger than the diameter A1 of the one end. Both ends can be clamped with the porcelain shell. Due to differences in manufacturing processes, the size of the porcelain shell may vary slightly between batches. The clamping method of the porcelain ring 1 with different sizes at both ends can better accommodate these differences. For example, the slightly smaller end can be used for porcelain shells at the lower end of the tolerance range, and the slightly larger end can be used for porcelain shells at the upper end of the tolerance range. The tight clamping of the porcelain ring 1 with the porcelain shell can effectively prevent gas leakage.

[0033] The diameters of the two ends of the porcelain shell are A1 and A2. Different tolerance bands are proposed, such as Figure 2 As shown, A1 is smaller than A2, which can effectively solve the positioning problem caused by the consistency difference of the roundness of the porcelain shell and the large tolerance range, and improve the universality and production efficiency of the mold. In the implementation process, it is necessary to combine with the specific production demand and process condition, carry out reasonable mold design, production process control and application scene expansion, so as to realize the best positioning effect and production benefit.

[0034] The other end of the porcelain ring 1 is provided with a mounting ring, which is fixedly connected with the porcelain ring 1, or the porcelain ring 1 and the mounting ring are integrated. The mounting ring is used for clamping with the movable cover plate. The diameter of the mounting ring is smaller than the diameter of the other end of the porcelain ring 1, so that the mounting ring can play a certain guiding role when clamping with the movable cover plate. When the movable cover plate approaches the porcelain ring 1, the larger diameter end of the porcelain ring 1 first plays a role in preliminary positioning, guiding the movable cover plate to move in the direction of the mounting ring, and ensuring that the movable cover plate can be accurately clamped with the mounting ring.

[0035] The design that the diameter of the mounting ring is smaller than the diameter of the other end of the porcelain ring 1 can ensure that the clamping between the movable cover plate and the porcelain ring 1 is tight and reliable, preventing dust, moisture and other external factors from entering the equipment, affecting the performance and service life of the equipment. At the same time, the porcelain ring 1 and the mounting ring will not loosen or fall off due to vibration or temperature change.

[0036] The one end of the porcelain ring 1 is provided with a U-shaped opening, and the top end of the U-shaped opening has a diameter C1. The other end of the porcelain ring 1 is provided with a polygonal opening, and the diameter of the outer side of the polygonal opening is C2.

[0037] The U-shaped opening can allow a certain size deviation to a certain extent, providing a certain fault tolerance space. For example, when the diameter is slightly larger than C1, the U-shaped opening can adapt to the porcelain shell through its own elastic deformation, realizing tight cooperation. The diameter of the outer side of the polygonal opening is C2, so that the polygonal opening is easier to cooperate with the porcelain shell. When the porcelain ring 1 needs to be connected with other components, the polygonal opening or the U-shaped opening on the outer side can directly contact with the porcelain shell without complicated assembly operation. In addition, it is easier to process and detect, improving the production efficiency and quality control level.

[0038] The number of U-shaped openings and polygonal openings is matched to ensure the stability and uniformity of the connection. It should be noted that the U-shaped openings and polygonal openings need to be arranged in pairs, which makes it easier to position during assembly. The operator can quickly determine the correct installation position by identifying the paired openings, reducing the occurrence of assembly errors. At the same time, the paired openings can also facilitate automated assembly, improving the accuracy and efficiency of assembly. The number of U-shaped openings and polygonal openings is determined according to the diameter of the porcelain ring 1 at both ends, which can be increased or decreased accordingly.

[0039] In this embodiment, the number of U-shaped openings arranged at one end of the porcelain ring 1 is 8, and the number of polygonal openings arranged at the other end is also 8. The U-shaped openings and polygonal openings are staggered by 22.5°, which can reduce the thermal shock stress of the porcelain shell. Staggering the U-shaped openings and polygonal openings by 22.5° can further optimize stress distribution. This staggered angle can disperse stress in different directions, avoiding stress concentration in specific parts. For example, when the porcelain shell is subjected to thermal shock, the staggered openings can make the thermal stress more evenly distributed on the porcelain ring, reducing stress concentration caused by local overheating or overcooling.

[0040] The staggered design of multiple U-shaped openings and polygonal openings can disperse the stress generated by thermal shock to the entire porcelain ring 1. When the porcelain shell is subjected to thermal shock, heat will be transferred between the porcelain shell and the porcelain ring 1, causing temperature changes and thermal expansion differences. This thermal expansion difference will generate stress, which may cause the porcelain shell or porcelain ring to break if the stress is concentrated in a certain part. The design of multiple openings and staggering can disperse stress in different directions, reducing the degree of local stress concentration.

[0041] The U-shaped openings and polygonal openings can increase the path of heat conduction. When subjected to thermal shock, heat can be transferred and dispersed more quickly through the U-shaped openings or polygonal openings on the porcelain ring 1, thereby reducing temperature gradients and thermal stress. Specifically, when a part of the porcelain shell is subjected to thermal shock, heat can be transferred to other parts of the porcelain ring 1 through the U-shaped openings or polygonal openings, making the temperature of the entire porcelain ring 1 more uniform and reducing the generation of thermal stress.

[0042] The top end diameter C1 of the U-shaped opening is smaller than the outer side one end diameter C2 of the polygonal opening, which is convenient for identification and operation. Specifically, the top end diameter C1 of the U-shaped opening is smaller than the outer side one end diameter C2 of the polygonal opening, which forms a clear difference in appearance. In actual operation, the worker can quickly distinguish between the two different types of openings with the naked eye, thereby accurately identifying the corresponding operation position. For example, during assembly, the operator can easily distinguish which component should be inserted into which opening, avoiding errors caused by confusion.

[0043] In addition, the design of the size difference can adapt to components of different sizes. The smaller U-shaped opening can accommodate components of smaller diameter, while the larger polygonal opening can accommodate components of larger diameter. In this way, the porcelain ring 1 can be matched with components of various different sizes, increasing its versatility and applicability.

[0044] The porcelain ring 1 is made of ceramic material, avoiding the material category with large heat capacity, ensuring that the heat capacity will not increase significantly to waste kinetic energy. And the ceramic material has the same thermal expansion coefficient as the porcelain shell for vacuum interrupter, which will not cause the welding stress of the porcelain seal porcelain shell of the vacuum interrupter, and the thermal expansion coefficient of the ceramic material is smaller than that of the stainless steel and oxygen-free copper cover plate material. During the welding process, the porcelain ring realizes self-correction, and the porcelain seal welding precision is guaranteed.

[0045] As shown in the above, Figure 3 As shown in the above,

[0046] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not to limit it. Although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that the specific embodiments of the present application can be modified or replaced, without departing from the spirit and scope of the present application. Any modification or equivalent replacement that does not depart from the spirit and scope of the present application should be covered within the protection scope of the claims of the present application.

Claims

1. A ceramic ring for use in a vacuum interrupter, characterized in that: The ceramic ring (1) is used to be fixedly connected to the ceramic shell. An installation ring is provided on the inner side of the other end of the ceramic ring (1) for fixed connection with the movable cover plate. The installation ring is fixedly connected to the ceramic ring (1).

2. The ceramic ring for a vacuum interrupter according to claim 1, characterized in that: The ceramic ring (1) has a diameter of A1 at one end and A2 at the other end, and the mounting ring has a diameter of B.

3. The ceramic ring for a vacuum interrupter according to claim 2, characterized in that: The diameter A1 of one end of the ceramic ring (1) is smaller than the diameter A2 of the other end of the ceramic ring (1).

4. The ceramic ring for a vacuum interrupter according to claim 1, characterized in that: The ceramic ring (1) has a U-shaped opening at one end, and the diameter of the top of the U-shaped opening is C1.

5. The ceramic ring for a vacuum interrupter according to claim 4, characterized in that: The ceramic ring (1) has a polygonal opening at the other end, and the diameter of the outer end of the polygonal opening is C2.

6. The ceramic ring for a vacuum interrupter according to claim 5, characterized in that: The diameter C1 at the top of the U-shaped opening is smaller than the diameter C2 at the outer end of the polygonal opening.

7. The ceramic ring for a vacuum interrupter according to claim 1, characterized in that: The ceramic ring (1) has a U-shaped opening at one end, and the number of the U-shaped openings is 2N, where N is greater than or equal to 1.

8. The ceramic ring for a vacuum interrupter according to claim 7, characterized in that: The other end of the ceramic ring (1) is provided with a polygonal opening, the number of which is 2N, where N is greater than or equal to 1.

9. The ceramic ring for a vacuum interrupter according to claim 5, characterized in that: The number of U-shaped openings is matched with the number of polygonal openings.

10. The ceramic ring for a vacuum interrupter according to claim 1, characterized in that: The ceramic ring (1) is made of ceramic material.

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