Ceramic shell of alumina ceramic vacuum switch tube

Abstract

The utility model provides an alumina ceramic vacuum switch tube porcelain shell, and relates to the technical field of vacuum switch tubes. The vacuum switch tube provided by the utility model is used for solving the technical problems that the outer part of the vacuum switch tube provided by the prior art is provided with a ceramic shell, the ceramic shell is easy to break when collision occurs, and when a worker holds the switch tube, the ceramic shell is easy to damage the worker. The alumina ceramic vacuum switch tube porcelain shell comprises a tube body, the tube body is sleeved with two limiting rings, the two ends of the tube body are provided with connecting bosses used for being bonded with a plastic sleeve shell, the tube body is provided with a clamping groove, a rubber sleeve is provided with protruding particles, the rubber sleeve is arranged on the tube body in a sleeving mode, and the protruding particles are embedded in the clamping groove. According to the vacuum switch tube, the tube body is sleeved with the rubber sleeve, collision of the tube body can be buffered, the hands of a worker holding the vacuum switch tube can be protected when the tube body is broken, and the effect of protecting the tube body and the worker is achieved.

Description

Technical Field

[0001] The utility model provides an alumina ceramic vacuum switch tube porcelain shell, relating to the technical field of vacuum switch tubes. Background Art

[0002] Vacuum switch tube, also known as vacuum interrupter, is the core component of medium and high voltage power switches. Its main function is to use the excellent insulation of the vacuum inside the tube to quickly extinguish the arc and suppress the current after the medium and high voltage circuit is cut off from the power supply, so as to avoid accidents and unexpected events. It is mainly used in power transmission and distribution control systems, as well as in power distribution systems such as metallurgy and industrial high-frequency heating. It has the characteristics of energy saving, material saving, fire prevention, explosion prevention and pollution-free.

[0003] The patent with the patent authorization announcement number CN212411931U discloses a vacuum switch tube for indoor circuit breakers with good sealing performance. The patent combines the main grading ring and the auxiliary grading ring on both sides of the static end cover and the dynamic end cover, respectively, to ensure the internal sealing performance of the ceramic shell, the good vacuum effect, meet the requirements of pressure resistance and breaking capacity, and ensure the miniaturization and breaking capacity of the vacuum tube. However, the vacuum switch tube provided by the patent still has shortcomings in actual use. The outer shell of the vacuum switch tube is made of ceramic material, which is easy to break when a collision occurs, and when the staff holds the switch tube, the ceramic shell suddenly breaks, which is also easy to cause injuries.

[0004] Therefore, it is necessary to provide an alumina ceramic vacuum switch tube porcelain shell with a protective function. Utility Model Content

[0005] In order to overcome the shortcomings of the vacuum switch tube provided by the existing patent that the outer shell is made of ceramic material, which is easy to break when a collision occurs, and the breakage of the ceramic shell is easy to cause injuries when the staff holds the switch tube, the utility model provides an alumina ceramic vacuum switch tube porcelain shell with a protective function.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solutions: an alumina ceramic vacuum switch tube porcelain shell, including a tube body, a limiting ring and a connecting boss, two limiting rings are sleeved on the tube body, and connecting bosses for bonding plastic sleeves are arranged at both ends of the tube body. It also includes a rubber sleeve, a card slot is opened on the tube body, and a convex particle is arranged on the rubber sleeve. The rubber sleeve is arranged on the tube body, and the convex particle is embedded in the card slot.

[0007] Preferably, the tube body is made of alumina ceramic.

[0008] Preferably, the protrusions are spherical, and the recesses are spherical grooves corresponding to the protrusions.

[0009] Preferably, there are six rows of protrusions, which are evenly distributed on the inner wall of the rubber sleeve.

[0010] Preferably, it also includes a supporting ring installed in the tube body, and the supporting ring is used to support the shielding cover of the vacuum switch tube.

[0011] Preferably, an anti-slip strip is provided on the rubber sleeve.

[0012] Preferably, the anti-slip strips are annular and are evenly spaced on the rubber sleeve.

[0013] Compared with the prior art, the porcelain shell provided by the embodiment of the utility model has the following advantages: 1. By arranging the rubber sleeve on the tube body, the collision of the tube body can be buffered, and at the same time, the hands of the staff holding the vacuum switch tube can be protected when the tube body is broken, thereby achieving the effect of protecting both the tube body and the staff.

[0014] 2. The shielding cover is supported and limited by the supporting ring to prevent the shielding cover from sliding in the tube body and shifting the arcing position, so as to avoid damage to the tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the three-dimensional explosion structure of the utility model.

[0017] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the utility model.

[0018] Explanation of the reference numerals: 1. tube body, 2. slot, 3. limiting ring, 4. connecting boss, 5. supporting ring, 6. rubber sleeve, 7. convex particle, 8. anti-slip strip. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1: An alumina ceramic vacuum switch tube ceramic shell, see Figure 1-Figure 3As shown, it includes a tube body 1, a limit ring 3 and a connecting boss 4. The tube body 1 is made of alumina ceramic and has the characteristics of high hardness, high wear resistance, high insulation and high temperature resistance. It can withstand the high temperature when the vacuum switch tube is arcing. The tube body 1 is sleeved with two upper and lower limit rings 3. The upper and lower ends of the tube body 1 are provided with connecting bosses 4 for bonding the plastic sleeve. It also includes a rubber sleeve 6. The outer wall of the tube body 1 is provided with a groove 2. The inner wall of the rubber sleeve 6 is provided with a convex particle 7. The rubber sleeve 6 is sleeved on the tube body 1, and the convex particle 7 is embedded in the groove 2. The convex particle 7 is spherical, and the groove is a spherical groove corresponding to the convex particle 7. There are six rows of convex particles 7, which are evenly distributed on the inner wall of the rubber sleeve 6, so that the connection between the rubber sleeve 6 and the tube body 1 is denser.

[0021] When the vacuum tube needs to be connected, the contacts at both ends are respectively inserted from the upper and lower openings of the tube body 1 to connect the contacts at both ends inside the tube body 1, and then the plastic sleeves of the two contacts are respectively connected to the upper and lower connecting bosses 4 of the tube body 1. The rubber sleeve 6 can protect the tube body 1, buffer collisions, and prevent the tube body 1 from breaking due to slight collisions. At the same time, it can protect the hands of the person holding it to prevent the tube body 1 from breaking and causing injuries. The convex particle 7 is embedded in the card slot 2, which can prevent the tube body 1 from rotating on the rubber sleeve 6. The limit ring 3 can limit the depth of the plastic sleeve bonding to the tube body 1, and at the same time can prevent the rubber sleeve 6 from sliding up and down.

[0022] Example 2: Based on Example 1, refer to Figure 1-Figure 3 As shown, it also includes a supporting ring 5 installed in the tube body 1 by using glass glue for supporting the shielding cover of the vacuum switch tube; the rubber sleeve 6 is surrounded by an anti-skid strip 8, which is annular and evenly spaced up and down on the rubber sleeve 6, so that any position of the rubber sleeve 6 can be prevented from slipping.

[0023] The supporting ring 5 can support the shielding cover to prevent the shielding cover from sliding up and down in the tube body 1 at will, shifting the arcing position that needs to be protected, and causing damage to the tube body 1; the anti-slip strip 8 can play an anti-slip role when the staff holds the rubber sleeve 6, to prevent the surface of the rubber sleeve 6 from being too smooth and making it difficult for people to hold it well.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An alumina ceramic vacuum switch tube ceramic shell, comprising a tube body (1), a limit ring (3) and a connecting boss (4), wherein two limit rings (3) are sleeved on the tube body (1), and connecting bosses (4) for bonding a plastic sleeve are arranged at both ends of the tube body (1), characterized in that: It also comprises a rubber sleeve (6), a clamping groove (2) is provided on the tube body (1), a convex particle (7) is arranged on the rubber sleeve (6), the rubber sleeve (6) is sleeved on the tube body (1), and the convex particle (7) is embedded in the clamping groove (2).

2. The alumina ceramic vacuum switch tube ceramic shell according to claim 1, characterized in that: The tube body (1) is made of alumina ceramic.

3. The alumina ceramic vacuum switch tube ceramic shell according to claim 1, characterized in that: The convex particle (7) is spherical, and the concave groove is a spherical groove corresponding to the convex particle (7).

4. The alumina ceramic vacuum switch tube ceramic shell according to claim 1, characterized in that: There are six rows of protrusions (7) uniformly distributed on the inner wall of the rubber sleeve (6).

5. The alumina ceramic vacuum switch tube ceramic shell according to claim 1, characterized in that: It also includes a supporting ring (5) installed in the tube body (1), and the supporting ring (5) is used to support the shielding cover of the vacuum switch tube.

6. The alumina ceramic vacuum switch tube ceramic shell according to claim 1, characterized in that: An anti-slip strip (8) is provided on the rubber sleeve (6).

7. The alumina ceramic vacuum switch tube ceramic shell according to claim 6, characterized in that: The anti-slip strips (8) are ring-shaped and are evenly spaced and arranged on the rubber sleeve (6).

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