Vacuum arc-extinguishing chamber with damping function

Abstract

The utility model provides a vacuum arc-extinguishing chamber with a damping function, and belongs to the technical field of electrical elements. The two ends of the ceramic tube are sleeved with the two sleeves of the damping sleeve respectively, each sleeve comprises the multiple damping rings and the connecting strips, the multiple damping rings in the same sleeve are coaxial and arranged at intervals in the same direction, the connecting strips are arranged between every two adjacent damping rings, and therefore the whole structure is formed. Each damping ring is wrapped by a rubber pad, the ceramic tube is sleeved with the damping rings of the sleeve and makes contact with the damping rings of the sleeve through the rubber pads, auxiliary supporting can be provided for the ceramic tube, damping in the stacking and transporting process can be achieved, the ceramic tube is not prone to colliding with the outside in the stacking and transporting process, and the service life of the ceramic tube is prolonged. Therefore, the problem that the ceramic tube is cracked or damaged due to collision is avoided, the safety guarantee is improved, and popularization and application of the vacuum arc-extinguishing chamber are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical components, in particular to a vacuum arc extinguishing chamber with shock absorption. Background Art

[0002] As a structure for maintaining electricity safety in the distribution network, the vacuum interrupter pushes its moving conductive rod through an external mechanism to achieve connection or disconnection between the moving contact on the moving conductive rod and the static contact on the static conductive rod, thereby meeting the needs of circuit on-off control and reducing the impact of the arc generated during the on-off process on the power grid.

[0003] At present, the vacuum arc extinguishing chamber on the market, such as the vacuum arc extinguishing chamber disclosed in patent CN204230145U, has a ceramic tube, a static cover plate, a dynamic cover plate, a static conductive rod, a dynamic conductive rod, a static contact seat and a dynamic contact seat, a static contact, a dynamic contact and a shielding cylinder, the static cover plate and the dynamic cover plate are respectively covered on both sides of the ceramic tube, the static conductive rod and the dynamic conductive rod are respectively penetrated on the static cover plate and the dynamic cover plate, the static contact seat is located in the ceramic tube and connected to the static conductive rod, the dynamic contact seat is located in the ceramic tube and connected to the dynamic conductive rod, the static contact is installed on the static contact seat, and the dynamic contact is installed on the dynamic contact seat. When in use, under the drive of the external driving rod, the dynamic contact is connected or separated from the static contact, and a shielding barrel is provided in the ceramic tube and on the outer sleeve of the static contact and the dynamic contact, closing the static contact seat and the dynamic contact seat. It can be seen from this that the existing vacuum arc extinguishing chamber usually has a ceramic tube for insulation isolation, at which time, the ceramic tube is directly exposed to the outside world as an external structure.

[0004] For vacuum arc chambers during storage and transportation after processing, the ceramic tubes directly exposed to the outside world are very likely to collide during stacking or transportation. The ceramic tubes of existing vacuum arc chambers are very likely to crack or break when directly collided, which poses a safety hazard and is not conducive to the promotion and use of vacuum arc chambers. Summary of the invention

[0005] In view of the above-mentioned problems existing in the prior art, the present invention aims to provide a vacuum arc chamber with shock absorption, in which a plurality of shock absorption rings are provided at intervals on the outside of a ceramic tube, and the plurality of shock absorption rings are connected to form an integral structure, and rubber pads are wrapped around the shock absorption rings, so that the outer side of the ceramic tube is wrapped and supported by the shock absorption rings, and the outer wall of the ceramic tube is contacted by the rubber pads, so that auxiliary support and shock absorption can be achieved through the shock absorption rings during stacking and transportation, thereby avoiding the problem of cracks or breakage of the ceramic tube due to collision, and the external protection effect is better, which is conducive to the promotion and use of vacuum arc chambers.

[0006] The specific technical solutions are as follows:

[0007] A vacuum interrupter with shock absorption, comprising a ceramic tube, an end cover, a moving conductive rod, a static conductive rod, a moving contact and a static contact, the two ends of the ceramic tube are respectively provided with end covers, the moving conductive rod and the static conductive rod are respectively provided with end covers, one end of the moving conductive rod and the static conductive rod are extended into the ceramic tube and are respectively provided with a moving contact and a static contact, having such characteristics, and also comprising a shock absorption sleeve, and,

[0008] The shock-absorbing sleeve includes two sleeves arranged opposite to each other, and the two sleeves are respectively sleeved on the two ends of the ceramic tube from the two ends to the middle direction. The two sleeves include a plurality of shock-absorbing rings and connecting strips. The plurality of shock-absorbing rings are coaxially arranged and spaced apart in one direction, and a plurality of connecting strips are arranged between two adjacent shock-absorbing rings. A rubber pad is wrapped outside each shock-absorbing ring, and when the shock-absorbing ring is sleeved outside the ceramic tube, the rubber pad rests on the outer wall of the ceramic tube.

[0009] In the above-mentioned vacuum interrupter with shock absorption, the connecting strip is one of a nylon rope, a steel wire rope and a steel sheet.

[0010] In the above-mentioned vacuum arc extinguishing chamber with shock absorption, the shock absorption ring is formed by rolling a strip steel sheet, and both ends of the shock absorption ring are respectively provided with mutually matching clamping holes and clamping blocks.

[0011] In the above-mentioned vacuum interrupter with shock absorption, the thickness of the part where the shock absorption ring is provided with the clamping hole and the clamping block is half of the thickness of the shock absorption ring itself.

[0012] In the above-mentioned vacuum interrupter with shock absorption, the rubber pad and the shock absorption ring are integrally injection molded, and the shock absorption ring is provided with a clamping hole and one end of the clamping block is exposed outside the rubber pad.

[0013] In the above-mentioned vacuum interrupter with shock absorption, when the two sleeves are respectively sleeved on the two ends of the ceramic tube, a cable tie is arranged between the opposite ends of the two sleeves.

[0014] In the above-mentioned vacuum interrupter with shock absorption, a plurality of avoidance grooves are provided on the rubber pad of the shock absorption ring at the opposite end of the two sleeves, and the cable ties are located in the avoidance grooves.

[0015] The positive effects of the above technical solution are:

[0016] The above-mentioned vacuum arc chamber with shock absorption is provided with a shock-absorbing sleeve including two sleeves on the outer sleeve of the ceramic tube. The two sleeves are respectively sleeved on the two ends of the ceramic tube and arranged opposite to each other. Each sleeve includes a plurality of shock-absorbing rings and connecting strips. Each shock-absorbing ring is wrapped with a rubber pad, and when the sleeve is sleeved on the outside of the ceramic tube, the rubber pad rests on the outer wall of the ceramic tube. In addition, the two adjacent shock-absorbing rings in the same sleeve are connected by the connecting strip, so that the sleeve can form an integral structure to wrap the outside of the ceramic tube. Shock absorption can be achieved through the rubber pad, and auxiliary support can be achieved through the shock-absorbing sleeve itself, so that the ceramic tube of the vacuum arc chamber is not easy to contact with the outside world and collide during stacking and transportation, thereby avoiding cracks or damage to the ceramic tube due to collision. The safety protection is higher, which is conducive to the promotion and use of vacuum arc chambers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of an embodiment of a vacuum interrupter with shock absorption of the utility model;

[0018] Figure 2 for Figure 1 A magnified view of part A;

[0019] Figure 3 This is a structural diagram of a shock-absorbing sleeve according to a preferred embodiment of the utility model.

[0020] In the attached drawings: 1. ceramic tube; 2. end cover; 3. moving conductive rod; 4. static conductive rod; 5. moving contact; 6. static contact; 7. shock-absorbing sleeve; 71. sleeve; 72. cable tie; 711. shock-absorbing ring; 712. connecting strip; 713. rubber pad; 7111. card hole; 7112. card block; 7131. avoidance groove. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments are combined with the attached Figure 1 To Attachment Figure 3 The technical solution provided by the utility model is described in detail, but the following content is not intended to limit the utility model.

[0022] Figure 1 This is a structural diagram of an embodiment of a vacuum interrupter with shock absorption of the utility model; Figure 2 for Figure 1 This is an enlarged view of part A. Figure 1 and Figure 2As shown, the vacuum interrupter with shock absorption provided in this embodiment includes a ceramic tube 1, an end cover 2, a moving conductive rod 3, a static conductive rod 4, a moving contact 5 and. Like a conventional vacuum interrupter, its main structure is usually provided with end covers 2 at both ends of the ceramic tube 1, and the moving conductive rod 3 and the static conductive rod 4 are respectively provided on the two end covers 2. At the same time, one end of the moving conductive rod 3 and the static conductive rod 4 are extended into the ceramic tube 1 and are respectively installed with a moving contact 5 and a static contact 6. The moving conductive rod 3 is driven by an external device to move, so that the moving contact 5 and the static contact 6 are in contact or separated, thereby realizing the conduction or disconnection of the circuit. At this time, the vacuum interrupter with shock absorption provided in this embodiment also includes a shock absorbing sleeve 7, which wraps the ceramic tube 1 through the shock absorbing sleeve 7, which not only realizes auxiliary support and avoids the problem of damage to the ceramic tube 1 due to excessive pressure, but also realizes shock absorption, improves the protection effect during stacking and transportation, and has higher safety assurance, which is conducive to the promotion and use of vacuum interrupters.

[0023] Figure 3 This is a structural diagram of a shock-absorbing sleeve of a preferred embodiment of the utility model. Figures 1 to 3As shown, the shock-absorbing sleeve 7 also includes two sleeves 71 arranged oppositely. At this time, the mouths of the two sleeves 71 are arranged oppositely, which provides convenience for the subsequent sleeves 71 to be sleeved outside the ceramic tube 1 from both ends. During installation, the two sleeves 71 are sleeved outside the two ends of the ceramic tube 1 from the two ends to the middle direction, that is, relative to the scheme in which the sleeve 71 is sleeved from one end to the other end of the ceramic tube 1 as a whole, the stroke of each sleeve 71 when being sleeved can be reduced, and the disassembly efficiency is improved. In addition, both sleeves 71 include a number of shock-absorbing rings 711 and a connecting strip 712. At this time, the several shock-absorbing rings 711 in the same sleeve 71 are coaxially arranged, which can better adapt to the length direction of the ceramic tube 1. In addition, the several shock-absorbing rings 711 in the same sleeve 71 are arranged at intervals along a direction, so that the several shock-absorbing rings 711 in the same sleeve 71 can be distributed at intervals outside the ceramic tube 1, and the effect of shock absorption and auxiliary support can be achieved without covering the ceramic tube 1 as a whole, reducing the use of materials and reducing manufacturing costs. In addition, a plurality of connecting strips 712 are provided between two adjacent damping rings 711, and the two adjacent damping rings 711 are connected into an integral structure through the connecting strips 712, and the stability after being sleeved outside the ceramic tube 1 is better. In addition, each damping ring 711 is wrapped with a rubber pad 713, and when the damping ring 711 is sleeved outside the ceramic tube 1, the rubber pad 713 abuts against the outer wall of the ceramic tube 1, that is, the damping ring 711 contacts the ceramic tube 1 through the rubber pad 713, so as to support the ceramic tube 1 and restrict the ceramic tube 1 inside, so as to provide better safety protection. In addition, the weak elastic energy absorption and shock absorption of the rubber pad 713 can reduce the impact of vibration during stacking and transportation, and prevent the ceramic tube 1 from cracking or breaking due to collision, so as to provide higher safety protection and facilitate the promotion and use of vacuum arc extinguishing chambers. It is worth pointing out that when the vacuum interrupter is subsequently installed in the power grid for use, the installer will remove the shock-absorbing sleeve 7 from the ceramic tube 1 to reduce external interference to the vacuum interrupter and ensure the safety of electricity use.

[0024] More specifically, the connecting strip 712 used to connect two adjacent damping rings 711 in the same sleeve 71 into a whole is one of a nylon rope, a steel wire rope and a steel sheet, and has a firm structure and is not easy to break, thereby improving the reliability of the sleeve 71 after being sleeved on the ceramic tube 1, and the structural design is more reasonable. It is worth pointing out that the thickness of the connecting strip 712 is less than the thickness of the damping ring 711 after the rubber pad 713 is wrapped, so that the concave arrangement of the connecting strip 712 can be realized, which can avoid the problem of interference and collision caused by the protrusion of the connecting strip 712.

[0025] More specifically, each damping ring 711 is formed by rolling a strip steel sheet, so that the damping ring 711 is thin and wide, which will not cause the problem of excessive increase in the overall volume of the vacuum arc chamber. At the same time, the damping ring 711 has a larger surface to carry the rubber pad 713 and has a sufficiently large contact area with the ceramic tube 1, thereby improving the stability after installation and enhancing the damping effect. In addition, the two ends of the damping ring 711 are respectively provided with a card hole 7111 and a card block 7112 that cooperate with each other, that is, after rolling, the card block 7112 can be inserted into the corresponding card hole 7111 to achieve the connection of the two ends of the strip steel sheet, thereby forming a complete circular structure, which is more convenient for disassembly and assembly. In addition, the damping ring 711 made of the strip steel sheet has a certain hardness, can achieve auxiliary support during stacking and transportation, reduce the pressure on the ceramic tube 1 itself, and further reduce the risk of cracks or damage to the ceramic tube 1, and have higher safety assurance.

[0026] More specifically, the thickness of the portion of the shock-absorbing ring 711 where the clamping hole 7111 and the clamping block 7112 are provided is set to be half of the thickness of the shock-absorbing ring 711 itself, that is, the thickness of both ends of the shock-absorbing ring 711 where the clamping hole 7111 and the clamping block 7112 are provided are halved, so that when the clamping block 7112 and the clamping hole 7111 are subsequently connected, the thickness of the connection can be consistent with the thickness of other areas, thereby ensuring that the thickness of each part of the formed shock-absorbing ring 711 can be maintained consistent, and also avoiding the problem of excessive protrusion at a certain point and easy collision, and the structural design is more reasonable.

[0027] More specifically, the rubber pad 713 and the shock absorbing ring 711 are an integral injection molding structure, which ensures the reliability and stability of the rubber pad 713 wrapped on the shock absorbing ring 711, and reduces the risk of the rubber pad 713 falling off the shock absorbing ring 711. In addition, the end of the shock absorbing ring 711 provided with the clamping hole 7111 and the clamping block 7112 is exposed outside the rubber pad 713, which is convenient for the disassembly and assembly of the shock absorbing ring 711 itself when the sleeve 71 is sleeved on the ceramic tube 1 or removed from the ceramic tube 1 in the later stage, thereby facilitating the disassembly and assembly of the sleeve 71 on the ceramic tube 1.

[0028] More specifically, when the two sleeves 71 are respectively sleeved on the two ends of the ceramic tube 1, at this time, a cable tie 72 is provided between the opposite ends of the two sleeves 71. Preferably, after the two sleeves 71 are respectively sleeved on the two ends of the ceramic tube 1 and in place, the opposite ends of the two sleeves 71 abut against each other, thereby realizing the mutual limitation of the two sleeves 71. In addition, the ends of the two sleeves 71 abutting against each other are connected into an integral structure by a cable tie 72, thereby forming a stable shock-absorbing sleeve 7, that is, a shock-absorbing sleeve 7 is formed on the outside of the ceramic tube 1 to wrap it, and the shock-absorbing sleeve 7 is used to auxiliary support the ceramic tube 1. At the same time, the vacuum arc extinguishing chamber is shock-absorbing during stacking and transportation, which effectively prevents cracks or damage caused by accidental collisions, and has higher safety assurance.

[0029] More specifically, a plurality of avoidance grooves 7131 are provided on the rubber pads 713 of the shock absorbing rings 711 at opposite ends of the two sleeves 71. At this time, when the opposite ends of the two sleeves 71 are connected by the cable tie 72, the cable tie 72 used is located in the avoidance groove 7131, that is, the avoidance groove 7131 provides an avoidance space for the installation of the cable tie 72, thereby realizing the hidden installation of the cable tie 72, thereby avoiding the problem that the cable tie 72 protrudes out of the rubber pad 713 and interferes with the shock absorption, thereby ensuring the shock absorption effect.

[0030] The vacuum interrupter with shock absorption provided in this embodiment comprises a ceramic tube 1, an end cover 2, a moving conductive rod 3, a static conductive rod 4, a moving contact 5, a static contact 6 and a shock absorption sleeve 7; two sleeves 71 with shock absorption sleeves 7 respectively sleeved on both ends of the ceramic tube 1, each sleeve 71 comprises a plurality of shock absorption rings 711 and a connecting strip 712, and the plurality of shock absorption rings 711 in the same sleeve 71 are coaxial and spaced in one direction, and a connecting strip 712 is provided between two adjacent shock absorption rings 711 to form The overall structure is provided, and each shock-absorbing ring 711 is wrapped with a rubber pad 713. By sleeve-mounting the shock-absorbing ring 711 of the sleeve 71 outside the ceramic tube 1 and contacting it through the rubber pad 713, it can provide auxiliary support for the ceramic tube 1 and achieve shock absorption during stacking and transportation, so that the ceramic tube 1 is not easy to collide with the outside world during stacking and transportation, thereby avoiding the problem of cracks or breakage of the ceramic tube 1 due to collision, improving safety and being conducive to the promotion and use of vacuum arc chambers.

[0031] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum interrupter with shock absorption, comprising a ceramic tube, an end cover, a moving conductive rod, a static conductive rod, a moving contact and a static contact, wherein the two ends of the ceramic tube are respectively provided with the end covers, the moving conductive rod and the static conductive rod are respectively provided on the two end covers, one end of the moving conductive rod and the static conductive rod are both extended into the ceramic tube and are respectively provided with the moving contact and the static contact, characterized in that: Also includes shock-absorbing sleeves, and, The shock-absorbing sleeve includes two sleeves arranged opposite to each other, and the two sleeves are respectively sleeved on the two ends of the ceramic tube from the two ends to the middle direction. The two sleeves each include a plurality of shock-absorbing rings and connecting strips. The plurality of shock-absorbing rings are coaxially arranged and spaced apart in one direction, and a plurality of connecting strips are arranged between two adjacent shock-absorbing rings. A rubber pad is wrapped on the outside of each shock-absorbing ring, and when the shock-absorbing ring is sleeved on the outside of the ceramic tube, the rubber pad rests on the outer wall of the ceramic tube.

2. The vacuum interrupter with shock absorption according to claim 1, characterized in that: The connecting strip is one of a nylon rope, a steel wire rope and a steel sheet.

3. The vacuum interrupter with shock absorption according to claim 1, characterized in that: The shock-absorbing ring is formed by rolling a strip steel sheet into a circle, and both ends of the shock-absorbing ring are respectively provided with a clamping hole and a clamping block which cooperate with each other.

4. The vacuum interrupter with shock absorption according to claim 3, characterized in that: The thickness of the portion of the shock-absorbing ring where the clamping hole and the clamping block are arranged is half of the thickness of the shock-absorbing ring itself.

5. The vacuum interrupter with shock absorption according to claim 3, characterized in that: The rubber pad and the shock absorbing ring are integrally injection molded, and the shock absorbing ring is provided with the clamping hole and one end of the clamping block is exposed outside the rubber pad.

6. The vacuum interrupter with shock absorption according to claim 1, characterized in that: When the two sleeves are respectively sleeved on the two ends of the ceramic tube, a cable tie is arranged between the opposite ends of the two sleeves.

7. The vacuum interrupter with shock absorption according to claim 6, characterized in that: A plurality of avoidance grooves are provided on the rubber pad of the shock-absorbing ring at one end opposite to the two sleeves, and the cable tie is located in the avoidance grooves.

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