Arc extinguish chamber for arc observation experiment of high-voltage switch
By placing buffer pads and gaskets between the nozzle and the pressure ring, the problem of easy nozzle cracking was solved, ensuring the stability of the arc-extinguishing chamber and the continuity of the experiment.
Patent Information
- Application Number
- CN202422860798.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-22
AI Technical Summary
The current installation method of the arc-extinguishing chamber nozzle makes the plexiglass nozzle prone to cracking or breaking during high-voltage switch arc observation experiments, affecting the normal progress of the experiment.
A buffer pad and a gasket are placed between the nozzle and the pressure ring. The buffer pad is made of PTFE material, and the gasket is made of the same metal material as the pressure ring. This increases the pressure ring spacing and absorbs the extrusion and impact forces, reducing mechanical stress.
It effectively prevents nozzle cracks and breakage, extends service life, and ensures the smooth progress of experiments.
Smart Images
Figure CN223566512U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to arc chamber spout installation technical field especially, relates to a high -pressure switch electric arc observation experiment uses arc chamber. BACKGROUND
[0002] In the process of breaking and connecting, arc often occurs in the arc chamber of high voltage switch, which can damage the equipment itself. Therefore, the observation and research of high voltage switch arc are particularly important.
[0003] The spout installed on the moving contact of the arc chamber of high voltage switch is a key component in the arc chamber. The spout in the arc chamber of the switch can prevent the jumping and spreading of the arc, stabilize the arc at a certain position, and facilitate the blowing out of the arc.
[0004] In the prior art, the spout 1 is fixed on the moving contact by the first compression ring 2 and the second compression ring 3 on the moving contact, which tightly hold the installation protruding ring 4 on the spout 1. Specifically, as Figure 1 The spout 1 is a cylindrical structure, and the installation protruding ring 4 is provided on the outer cylinder wall of the spout 1. The installation protruding ring 4 includes a first assembly side 42 and a second assembly side 43 on both sides of the installation protruding ring 4. An arc groove 5 is provided on one side of the first assembly side 42 of the installation protruding ring 4, and the bottom surface of the arc groove 5 is transitioned to the first assembly side 42 of the installation protruding ring 4 by a round corner 44. The first compression ring 2 and the second compression ring 3 are circular ring plates, and both are aluminum compression rings. The first compression ring 2 includes a first compression taper 21 and a first connecting protrusion 22 at the end of the first compression ring 2. The second compression ring 3 includes a second connecting recess 32 and a second compression ring surface 31.
[0005] During assembly, the first compression taper 21 on the first compression ring 2 is in contact with and tightly pressed against the first assembly side 42, and the second compression ring surface 31 on the second compression ring 3 is in contact with and tightly pressed against the second assembly side 43. The first connecting protrusion 22 of the first compression ring 2 extends into the second compression recess 31 on the second compression ring 3, and then the first compression ring 2 and the second compression ring 3 are fixedly connected by bolts, so that the first connecting protrusion 22 on the first compression ring 2 and the second compression recess 32 on the second compression ring 3 are in close contact, and the first compression ring and the second compression ring axially clamp the installation protruding ring, thereby fixing the spout.
[0006] In the high voltage switch arc observation experiment, in order to facilitate the observation of the shape of the arc in the arc chamber of the switch, the spout in the arc chamber mainly uses an organic glass spout with light transmission. However, due to the high hardness and brittleness of organic glass, according to the assembly structure form of the existing arc chamber spout, cracks are easily generated during the breaking process of the circuit breaker, which affects the normal progress of the entire experiment. UTILITY MODEL CONTENTS
[0007] The utility model discloses a high -pressure switch electric arc observation experiment is with arc chamber that extinguishes, to solve in order to facilitate the observation arc and adopt the organic glass spout, according to the original spout mounting mode to fix spout, and spout is easy to appear crack even appear the risk of fracture, influence the service life of organic glass spout, to influence the smooth progress of experiment.
[0008] To realize above -mentioned purpose, the utility model discloses a high -pressure switch electric arc observation experiment is with arc chamber that extinguishes adopts following technical scheme:
[0009] A kind of arc chamber that extinguishes for high -pressure switch electric arc observation experiment, including spout, the cylinder body one end of spout is equipped with installation convex ring, further including first compression ring and second compression ring for compressing installation convex ring, the installation convex ring includes first assembly side for assembly connection, the first compression ring includes first compression taper surface, and the first compression taper surface of first compression ring is equipped with buffer pad between first assembly surface of installation convex ring.
[0010] Further, the buffer pad is open ring structure or split structure.
[0011] Further, the buffer pad is PTFE gasket.
[0012] Further, the first compression ring and second compression ring are equipped with gasket, and the hardness of the gasket is greater than the hardness of buffer pad.
[0013] Further, the gasket is metal gasket.
[0014] Further, the material quality of gasket is same with the material quality of first compression ring and second compression ring.
[0015] Further, the gasket is aluminum gasket.
[0016] Beneficial effect: the utility model discloses a high -pressure switch electric arc observation experiment is with arc chamber that extinguishes improvement invention creation.Specifically, the utility model is equipped with buffer pad between first compression taper surface of first compression ring and first assembly surface of installation convex ring, and the extrusion pressure and impact force from spout exterior to spout are absorbed and buffered through buffer pad, solve the installation mode of spout in the arc chamber of existing extinguishing chamber and make organic glass spout easy to break down. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the assembly structure schematic drawing of spout in the arc chamber of prior art extinguishing chamber;
[0018] Figure 2 It is the assembly structure schematic drawing of one embodiment of spout in the arc chamber of utility model high -pressure switch electric arc observation experiment.
[0019] In the figure: 1. Nozzle; 2. First pressure ring; 21. First clamping cone surface; 22. First connecting protrusion; 3. Second pressure ring; 31. Second clamping ring surface; 32. Second connecting recess; 4. Mounting protrusion; 42. First mounting side; 43. Second mounting side; 44. Rounded corner; 5. Arc groove; 7. Buffer pad; 8. Gasket. Detailed Implementation
[0020] This invention solves the problem that the existing method of installing nozzles in arc-extinguishing chambers easily leads to breakage of the plexiglass nozzles by setting a buffer pad between the plexiglass nozzle in the arc-extinguishing chamber and the pressure plate located on the moving main contact. The buffer pad absorbs and buffers the squeezing force during the assembly process and the impact force transmitted to the nozzle when the contact moves, thereby reducing the mechanical stress at the nozzle assembly position.
[0021] Based on the above concept, as a basic embodiment, the arc-extinguishing chamber for high-voltage switch arc observation experiments of this utility model, such as... Figure 2 As shown, the device includes a nozzle 1 and a first pressure ring 2 and a second pressure ring 3 for pressing the nozzle 1. The nozzle 1 includes a mounting protrusion 4 provided on the nozzle 1 and an arcuate groove 5 located on one side of the mounting protrusion 4. The mounting protrusion 4 includes a first mounting side surface 42 and a second mounting side surface 43. The bottom surface of the arcuate groove 5 and the first mounting side surface 42 are transitioned by a rounded corner 44. The first pressure ring 2 includes a first pressing cone surface 21 and a first connecting protrusion 22. The second pressure ring 3 includes a second pressing ring surface 31 and a second connecting recess 32. A buffer pad 7 is provided between the first pressing cone surface 21 of the first pressure ring 2 and the first mounting surface 42 of the mounting protrusion 4.
[0022] Because a buffer pad 7 is provided between the first pressure ring 2 and the mounting protrusion 4 of the nozzle 1, the distance between the first pressure ring 2 and the third pressure plate 3 is increased. Therefore, in a preferred embodiment, a gasket 8 is provided between the first pressure ring 2 and the second pressure ring 3. The hardness of the gasket 8 is greater than that of the buffer pad 7, and both the gasket 8 and the buffer pad 7 should be made of high-temperature resistant and corrosion-resistant materials. During assembly, the gasket 8 is placed between the end face of the first connecting protrusion 22 and the end face of the second connecting recess 32, compensating for the gap between the first pressure ring 2 and the second pressure ring 3 caused by the buffer pad 7, without requiring structural modifications to the original first pressure ring 2 and the second pressure ring 3. In other embodiments, the gap between the first pressure ring 2 and the second pressure ring 3 caused by the buffer pad 7 can also be compensated by lengthening the end length of the first pressure ring 2 at the end where the first connecting protrusion 22 is located, thereby ensuring the stability of the assembly.
[0023] In order to facilitate assembly, the first compression ring 2 is a split structure, in assembly, the buffer pad 7 is arranged on the first assembly side 42, then the first compression taper surface 21 of the first compression ring 2 is arranged in close contact on the buffer pad 7, the second compression ring surface 31 on the second compression ring 3 is in contact with and compressed by the second assembly side 43, then the gasket 8 is arranged between the first connecting protrusion 22 of the first compression ring 2 and the second compression connecting recess 32 of the second compression ring 3, then the first compression ring 2, the gasket 8 and the second compression ring 3 are fixedly connected by bolts.
[0024] In a preferred embodiment, the radius of the fillet 44 is increased, so that the contact area between the first compression ring 2 and the first assembly side 42 of the nozzle 1 is further increased, thereby reducing the contact stress and also mitigating the stress concentration phenomenon.
[0025] Since PTFE has excellent chemical corrosion resistance and high temperature resistance, and also has good flexibility, the buffer pad preferably uses a PTFE gasket, and in other embodiments, the buffer pad 7 can also be made of other corrosion-resistant, high-temperature-resistant and cushioning materials, such as nylon.
[0026] The gasket 8 can be a metal gasket, such as a gasket made of steel. In order to make the compression ring connecting part have the same expansion coefficient and compression coefficient when thermal expansion and cold shrinkage occur, and to avoid the situation that the connecting part of the compression ring has a gap between the lines, which causes the nozzle to loosen, the material of the gasket 8 is the same as that of the first compression ring 2 and the second compression ring 3. In the prior art, the first compression ring 2 and the second compression ring 3 are both aluminum compression rings, and the gasket 8 preferably uses an aluminum gasket. Of course, in other embodiments, the gasket 8 can also be made of nylon material.
[0027] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, the patent protection scope of the present application is subject to the claims, any equivalent structural changes made by applying the contents of the specification and drawings of the present application should also be included in the protection scope of the present application.
Claims
1. A high-voltage switch arc observation experiment arc-extinguishing chamber, comprising a nozzle, a mounting convex ring is arranged at one end of a barrel of the nozzle, further comprising a first compression ring and a second compression ring for compressing the mounting convex ring, the mounting convex ring comprises a first assembly side for assembly connection, the first compression ring comprises a first compression taper surface, characterized in that, A buffer pad is arranged between the first compression taper surface of the first compression ring and the first assembly surface of the mounting convex ring.
2. The arc chamber for high voltage switch arc observation experiment according to claim 1, characterized in that, The buffer pad is in an open ring structure or a split structure.
3. The arc chamber for high voltage switch arc observation experiments according to claim 2, characterized in that, The buffer pad is a PTFE pad.
4. The arc chamber for high-voltage switch arc observation experiments according to any one of claims 1 to 3, characterized in that A pad is arranged between the first compression ring and the second compression ring, and the hardness of the pad is greater than that of the buffer pad.
5. The arc chamber for high voltage switch arc observation experiments according to claim 4, characterized in that, The pad is a metal pad.
6. The arc chamber for high voltage switch arc observation experiments according to claim 5, characterized in that, The material of the pad is the same as that of the first compression ring and the second compression ring.
7. The arc chamber for high voltage switch arc observation experiments according to claim 6, characterized in that, The pad is an aluminum pad.