Arc quenching chamber for bypass switch

Abstract

The present application provides a kind of bypass switch arc extinguishing chamber (10), it includes: movable electrode (100), is formed with protruding portion (110) at one end;Fixed electrode (200), is formed with first slot portion (210) at the other end with the protruding portion (110) corresponding mode, configuration is the other end of the movable electrode and the fixed electrode is separated by a specified distance and opposite;And drive portion (300), the movable electrode (100) is moved to fixed electrode (200) side.It is characterized in that, in the drive portion (300) moves the movable electrode (100), the protruding portion (110) and the first slot portion (210) interference fit.According to the present application, even if quickly push in movable electrode (100) also does not occur the vibration phenomenon, so it can quickly make all fault current backflow, so as to effectively and stably protect the module of bypass switch rear end from the influence of overcurrent, and can prevent the accident caused by overcurrent.

Description

TECHNICAL FIELD

[0001] The present application relates to an arc-extinguishing chamber for a bypass switch, and more particularly, to an arc-extinguishing chamber for a bypass switch that can effectively and stably protect a module at the rear end of a bypass switch from an overcurrent by preventing a chattering phenomenon and can prevent an accident caused by an overcurrent. BACKGROUND

[0002] An arc-extinguishing chamber for a bypass switch is a switching device that plays a role in rapidly bypassing a fault current to ground. The arc-extinguishing chamber for a bypass switch can protect a module at the rear end of a switch from an overcurrent by rapidly returning a fault current to ground.

[0003] Specifically, when a fault current occurs, a movable electrode of the arc-extinguishing chamber for a bypass switch contacts a fixed electrode, and thus the fault current is bypassed to ground.

[0004] On the other hand, in order to rapidly return a fault current, the arc-extinguishing chamber for a bypass switch needs to have a faster operation speed than a circuit breaker or a switch. Therefore, it is necessary to rapidly push the movable electrode of the arc-extinguishing chamber for a bypass switch into the fixed electrode.

[0005] However, if the movable electrode is rapidly pushed in, a chattering phenomenon occurs between the two electrodes. The chattering phenomenon is a phenomenon in which, after the movable electrode is pushed in, the contact points of the movable electrode and the fixed electrode repeatedly become a closed state (close) and an open state (open) within a predetermined time due to mechanical vibration.

[0006] Since a fault current can flow into a circuit at each time when the open state is repeatedly due to the chattering phenomenon, a module at the rear end of a switch can be damaged and an accident can occur. Therefore, it is necessary to prevent the chattering phenomenon.

[0007] As prior art documents related to the arc-extinguishing chamber for a bypass switch, there is Korean Utility Model Registration No. 20-2018-0002883 "Vacuum Arc Chamber" as shown in FIG. 1. Figure 1

[0008] Referring to Figure 1 , the vacuum arc chamber according to the prior art includes a movable electrode 1100 formed with a movable contact portion 1110, a fixed electrode 1200 formed with a fixed contact portion 1210 opposite to the movable contact portion 1110 and for contacting the movable contact portion 1110, and a bellows 1300 combined with the movable electrode 1100 to support the movable electrode 1100 so that the movable electrode 1100 can reciprocate toward the fixed electrode 1200 by contraction and expansion.

[0009] ​According to the prior art, a first flat surface portion 1111 and a first curved surface portion 1112 are formed in the movable contact portion 1110, and a second flat surface portion 1211 corresponding to the first flat surface portion 1111 of the movable contact portion 1110 and a second curved surface portion 1212 corresponding to at least a portion of the first curved surface portion 1112 of the movable contact portion 1110 are formed in the fixed contact portion 1210. According to the prior art, in the case where the movable electrode 1100 is in contact with the fixed electrode 1200, the movable contact portion 1110 is seated in the fixed contact portion 1210.

[0010] However, the prior art does not suggest a method for preventing the chatter phenomenon. SUMMARY

[0011] PROBLEMS TO BE SOLVED BY THE INVENTION

[0012] An object of the present invention is to provide an arc-extinguishing chamber for a bypass switch, which effectively and stably protects a module at the rear end of the bypass switch from an overcurrent by preventing the chatter phenomenon, so that an accident caused by the overcurrent can be prevented.

[0013] In addition, an object of the present invention is to provide an arc-extinguishing chamber for a bypass switch, in which even if a movable electrode is obliquely pushed in a state in which the movable electrode is not aligned with a fixed electrode, the movable electrode is reconfigured in an aligned state, so that an increase in contact resistance between the electrodes can be prevented.

[0014] TECHNICAL SOLUTION TO THE PROBLEM

[0015] To achieve the above object, the present invention provides an arc-extinguishing chamber for a bypass switch 10, which includes a movable electrode 100 having a protruding portion 110 formed at one end thereof, a fixed electrode 200 having a first groove portion 210 formed at the other end thereof in a form corresponding to the protruding portion 110, and configured to face the movable electrode in a state in which the one end of the movable electrode is spaced apart from the other end by a predetermined distance, and a driving portion 300 that moves the movable electrode 100 toward the fixed electrode 200.

[0016] In the case where the driving portion 300 moves the movable electrode 100, the protruding portion 110 is interference-fitted with the first groove portion 210.

[0017] The protruding portion 110 is formed along the outer periphery of the one end of the movable electrode.

[0018] The protruding portion 110 is integrally connected along the outer periphery of the one end of the movable electrode.

[0019] The protruding portion 110 is formed inside the one end of the movable electrode.

[0020] The protruding portion 110 is formed in a ring shape.

[0021] A second groove portion 120 is formed at one end of the movable electrode along at least one of the inner periphery or the outer periphery of the protrusion portion 110.

[0022] A plurality of the protrusion portions 110 are formed at one end of the movable electrode.

[0023] At least two of the protrusion portions 110 are formed at equal angular intervals on a circumference centered on the central axis A of the movable electrode 100.

[0024] A second groove portion 120 is formed at one end of the movable electrode along at least one of the inner periphery or the outer periphery of the protrusion portion 110.

[0025] The end portion 112 of the protrusion portion 110 is formed with a curvature.

[0026] The outer peripheral surface 114 of the protrusion portion 110 is formed with an inclination toward the inside.

[0027] The outer peripheral surface 114 or the inner peripheral surface of the protrusion portion 110 is formed with a concave-convex.

[0028] The depth of the first groove portion 210 is greater than the height of the protrusion portion 110.

[0029] The space S between the one side and the other side is in a vacuum state.

[0030] In addition, to achieve the above object, the present application provides an arc-extinguishing chamber 20 for a bypass switch, which includes a fixed electrode 200 formed with a protrusion portion 210 at the other end, a movable electrode 100 formed with a first groove portion 110 at one end in a form corresponding to the protrusion portion 110, the one end of the movable electrode being disposed opposite the other end at a predetermined distance, and a driving portion 300 for moving the movable electrode 100 toward the fixed electrode 200.

[0031] Effects of the Invention

[0032] According to the embodiment of the present application, in the case where the movable electrode 100 is moved (pushed in), the protrusion portion 110 formed at one end of the movable electrode 100 can be interference-fitted with the first groove portion 210 formed at the other end of the fixed electrode 200. Therefore, even if the movable electrode 100 is quickly pushed in, a chattering phenomenon does not occur, whereby the entire fault current can be quickly returned, so that the module at the rear end of the bypass switch can be effectively and stably protected from an overcurrent, and an accident caused by an overcurrent can be prevented.

[0033] According to an embodiment of the present application, the protrusion 110 can be formed along the outer circumference of one end of the movable electrode 100. Thus, the inter-electrode contact area is increased, so that the movable electrode 100 can be reliably interference-fitted with the first groove portion 210 through the protrusion 110, thereby effectively preventing the occurrence of the chatter phenomenon. In addition, since the contact resistance value between the electrodes is reduced due to the increase in the total inter-electrode contact area, it is possible to effectively prevent the damage to the module at the rear end of the bypass switch by suppressing the temperature rise at the time of energization.

[0034] In addition, since the diameter, thickness or width of the protrusion 110 is reduced so that the protrusion 110 is easily deformed, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 in a misaligned state, as a portion of the protrusion 110, which is first inserted into the first groove portion 210, is deformed, the remaining portion of the protrusion 110 can be easily inserted into the first groove portion 210. Thus, the movable electrode 100 can finally be reconfigured in an aligned state to the fixed electrode 200 and coupled thereto. Therefore, it is possible to prevent the temperature rise at the time of energization due to the increase in the inter-electrode contact resistance value, thereby damaging the module at the rear end of the bypass switch.

[0035] According to an embodiment of the present application, the protrusion 110 can be formed along the outer circumference of one end of the movable electrode 100. Thus, the inter-electrode contact area is increased, so that the movable electrode 100 can be reliably interference-fitted with the first groove portion 210 through the protrusion 110, thereby effectively preventing the occurrence of the chatter phenomenon. In addition, since the contact resistance value between the electrodes is reduced due to the increase in the total inter-electrode contact area, it is possible to effectively prevent the damage to the module at the rear end of the bypass switch by suppressing the temperature rise at the time of energization.

[0036] According to an embodiment of the present application, the protrusion 110 can be formed along the outer circumference of one end of the movable electrode 100. Thus, the inter-electrode contact area is increased, so that the movable electrode 100 can be reliably interference-fitted with the first groove portion 210 through the protrusion 110, thereby effectively preventing the occurrence of the chatter phenomenon. In addition, since the contact resistance value between the electrodes is reduced due to the increase in the total inter-electrode contact area, it is possible to effectively prevent the damage to the module at the rear end of the bypass switch by suppressing the temperature rise at the time of energization. Figure 8 and Figure 9), so the protrusion 110 can be easily deformed. Thus, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 in a misaligned state, a portion of the protrusion 110 that is first inserted into the first groove portion 210 can be more easily deformed due to the second groove portion 120b, and then the remaining portion of the protrusion 110 can be more easily inserted into the first groove portion 210. Thus, the movable electrode 100 can finally be reconfigured in an aligned state to the fixed electrode 200 and coupled to the fixed electrode 200. Therefore, it is possible to prevent a temperature increase at the time of energization due to an increase in inter-electrode contact impedance, thereby damaging the module at the rear end of the bypass switch.

[0037] According to an embodiment of the present application, the protrusion 110 can be formed in a ring shape. Thus, the inter-electrode contact area is increased, thereby effectively preventing the occurrence of a chattering phenomenon by reliably interference-fitting the protrusion 110 to the first groove portion 210, and it is possible to effectively prevent damage to the module at the rear end of the bypass switch by suppressing a temperature increase at the time of energization due to a decrease in inter-electrode contact impedance. In addition, since the protrusion 110 is easily deformed due to a decrease in diameter, thickness, or width, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 in a misaligned state, as a portion of the protrusion 110 that is first inserted into the first groove portion 210 is deformed, the remaining portion of the protrusion 110 can be easily inserted into the first groove portion 210. Thus, the movable electrode 100 can finally be reconfigured in an aligned state to the fixed electrode 200 and coupled to the fixed electrode 200. Therefore, it is possible to prevent a temperature increase at the time of energization due to an increase in inter-electrode contact impedance, thereby damaging the module at the rear end of the bypass switch.

[0038] According to an embodiment of the present application, the second groove portion 120 can be formed at one end of the movable electrode 100 along at least one of the inner or outer periphery of the protrusion 110. Thus, the protrusion 110 can be more easily deformed, so even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 in a misaligned state, as a portion of the protrusion 110 that is first inserted into the first groove portion 210 is more easily deformed due to the second groove portion 120, the remaining portion of the protrusion 110 can be more easily inserted into the first groove portion 210. Thus, the movable electrode 100 can finally be reconfigured in an aligned state to the fixed electrode 200 and coupled to the fixed electrode 200. Therefore, it is possible to prevent a temperature increase at the time of energization due to an increase in inter-electrode contact impedance, thereby damaging the module at the rear end of the bypass switch.

[0039] According to an embodiment of the present application, a plurality of protrusions 110 can be formed at one end of the movable electrode 100. Thus, the inter-electrode contact area is increased, so that the protrusions 110 can reliably be interference-fitted with the first groove portion 210, thereby effectively preventing the occurrence of the chattering phenomenon. In addition, since the total inter-electrode contact area is increased, the inter-electrode contact resistance value is reduced, so that the damage to the module at the rear end of the bypass switch due to the temperature rise at the time of energization can be effectively prevented. In addition, since each of the protrusions 110 is formed to have a small size, the protrusions 110 are easily deformed, so that even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 in a misaligned state, as the protrusions 110, which are first inserted into the first groove portion 210, are deformed, the remaining protrusions 110 can be easily inserted into the first groove portion 210. Thus, the entire protrusions 110 can finally be easily and stably coupled with the first groove portion 210. That is, the movable electrode 100 can finally be repositioned to the fixed electrode 200 in an aligned state and coupled with the fixed electrode 200. Thus, the temperature rise at the time of energization due to an increase in the inter-electrode contact resistance value can be prevented, thereby preventing the damage to the module at the rear end of the bypass switch.

[0040] According to an embodiment of the present application, among the plurality of protrusions 110 formed at one end of the movable electrode 100, at least two protrusions 110 can be formed at equal angular intervals on a circumference centered on the central axis A of the movable electrode 100. Thus, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 in a misaligned state, as the plurality of protrusions 110, which are symmetrically formed with reference to the central axis A, are inserted into the first groove portion 210, the movable electrode 100 can be easily repositioned to the fixed electrode 200 in an aligned state and coupled with the fixed electrode 200.

[0041] According to an embodiment of the present application, at one end of the movable electrode 100, a second groove portion 120 can be formed with respect to at least one protrusion 110 along at least one of the inner and outer peripheries of the protrusion 110. Thus, the protrusion 110, in which the second groove portion 120 is formed, can be more easily deformed, so that even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 in a misaligned state, as the protrusion 110, which is first inserted into the first groove portion 210, is more easily deformed due to the second groove portion 120, the remaining protrusions 110 can be more easily inserted into the first groove portion 210. Thus, the movable electrode 100 can finally be repositioned to the fixed electrode 200 in an aligned state and coupled with the fixed electrode 200. Thus, the temperature rise at the time of energization due to an increase in the inter-electrode contact resistance value can be prevented, thereby preventing the damage to the module at the rear end of the bypass switch.

[0042] According to an embodiment of the present application, the end portion 112 of the protrusion 110 can be formed with a curvature. Therefore, even if the movable electrode 100 is inclinedly moved (pushed in) to the fixed electrode 200 side in a misaligned state, the protrusion 110 can be easily inserted and coupled to the first groove portion 210 by sliding.

[0043] According to an embodiment of the present application, since the outer circumferential surface 114 of the protrusion 110 is inclinedly formed toward the inside, the protrusion 110 can be easily inserted into and interference-coupled with the first groove portion 210, and thus the chattering phenomenon can be effectively suppressed. In addition, since the diameter, thickness, or width of the end portion 112 of the protrusion 110 is reduced in value, even if the movable electrode 100 is inclinedly moved (pushed in) to the fixed electrode 200 side in a misaligned state, the protrusion 110 can be easily inserted and coupled to the first groove portion 210.

[0044] According to an embodiment of the present application, the outer circumferential surface 114 or the inner circumferential surface of the protrusion 110 can be formed with a convexity and concavity. Therefore, the protrusion 110 can be interference-coupled with the first groove portion 210 more easily, and thus the chattering phenomenon can be effectively suppressed.

[0045] According to an embodiment of the present application, the depth of the first groove portion 210 can be greater than the height of the protrusion 110. Therefore, the peripheral portion of the first groove portion 210 in the fixed electrode 200 can be easily deformed, and thus even if the movable electrode 100 is inclinedly moved (pushed in) to the fixed electrode 200 side in a misaligned state, as the peripheral portion of the first groove portion 210, to which a portion of the protrusion 110 is first coupled in the fixed electrode 200, is easily deformed, the remaining portion of the protrusion 110 can be more easily inserted and coupled to the first groove portion 210. Thus, the movable electrode 100 can finally be reconfigured to the fixed electrode 200 in an aligned state and coupled with the fixed electrode 200. Thus, it is possible to prevent the temperature from increasing at the time of energization due to an increase in inter-electrode contact resistance, thereby damaging the module at the rear end of the bypass switch.

[0046] According to an embodiment of the present application, the space S between one side of the movable electrode 100 and the other side of the fixed electrode 200 can be in a vacuum state. Therefore, the movable electrode 100 and the fixed electrode 200 can be closely disposed in a normal state, and thus it is possible to shorten the distance (push-in distance) that the movable electrode 100 needs to move at the time of an accident. Thus, the arc-extinguishing chamber 10 for a bypass switch can rapidly return a fault current, and thus it is possible to rapidly protect the module at the rear end of the bypass switch from an overcurrent, and further, to prevent an accident caused by an overcurrent. In addition, since a vacuum is used as an insulating medium, it is possible to prevent environmental pollution and keep the inside of the arc-extinguishing chamber 10 for a bypass switch clean.

[0047] The above effects and specific effects of the present application will be described below while describing specific details for implementing the present application. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a diagram showing a prior art.

[0049] Figure 2 and Figure 3 are sectional views showing an open state and a closed state of an arc extinguishing chamber for a bypass switch according to an embodiment of the present application.

[0050] Figure 4 and Figure 5 are a perspective view and a sectional view of a movable electrode according to an embodiment of the present application.

[0051] Figure 6 and Figure 7 are a perspective view and a sectional view of a fixed electrode according to an embodiment of the present application.

[0052] Figures 8 to 11 is a sectional view showing an open state of an arc extinguishing chamber for a bypass switch according to another embodiment of the present application.

[0053] Figure 12 is a sectional view showing an open state of an arc extinguishing chamber for a bypass switch according to another embodiment of the present application. DETAILED DESCRIPTION

[0054] Hereinafter, a preferred embodiment of the present application will be described in detail with reference to the accompanying drawings.

[0055] The present application is not limited to the embodiments disclosed below, and can be embodied in various forms, and the present embodiments are provided only to fully disclose the present application and to completely disclose the scope of the present application to those having ordinary skill in the art. Therefore, it should be understood that the present application is not limited to the embodiments disclosed below, and the present application includes not only the configurations of any one of the embodiments and the configurations of other embodiments substituted or added thereto, but also all modifications, equivalents, and alternatives within the technical idea and scope of the present application.

[0056] It should be understood that the drawings are provided to facilitate understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited to the drawings, and the present application includes all modifications, equivalents, and alternatives made within the technical idea and scope of the present application. For convenience of understanding, although the size or thickness of a constituent element can be exaggerated or reduced in the drawings, the scope of protection of the present application should not be construed restrictively.

[0057] The terms used in the present specification are merely used to describe particular embodiments or examples, and are not intended to limit the present application. Unless otherwise defined, the terms used in the present specification, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms defined in commonly used dictionaries are to be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and are not to be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0058] A first, second, etc. ordinal term including a number can be used to illustrate a plurality of constituent elements, however the constituent elements are not limited to the terms. The terms are used only to distinguish one constituent element from another.

[0059] It should be understood that when it is referred to that one constituent element is "linked" or "connected" to another constituent element, the constituent element can be directly linked or connected to the other constituent element, but there can be other constituent elements in the middle. In contrast, in the case where it is referred to that one constituent element is "directly linked" or "directly connected" to another constituent element, it is understood that there is no other constituent element between them.

[0060] When it is referred to that one constituent element is "on" or "under" another constituent element, it is understood that not only the case where it is directly disposed on the top surface of the other constituent element, but also the case where there are other constituent elements in the middle.

[0061] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms defined in commonly used dictionaries are to be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and are not to be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0062] Figure 2 And Figure 3 FIGS. 1 and 2 are cross-sectional views showing an open state and a closed state of an arc-extinguishing chamber for a bypass switch according to an embodiment of the present application.

[0063] Referring to Figure 2 And Figure 3 The arc-extinguishing chamber 10 for a bypass switch according to an embodiment can include a movable electrode 100, a fixed electrode 200, a driving part 300, and a bellows 400.

[0064] The arc-extinguishing chamber (Interrupter) for a bypass switch is generally placed in a state as shown in Figure 2The movable electrode 100 is shown in an open state spaced apart from the fixed electrode 200, and when a fault current occurs, as shown in FIG. 2, the movable electrode 100 is moved (pushed) to the fixed electrode 200 side, and the movable electrode 100 and the fixed electrode 200 are in a closed state. Figure 3 As shown, the movable electrode 100 can be converted to a closed state by being moved (pushed) to the fixed electrode 200 side. In the closed state, the fault current can be bypassed to the ground.

[0065] [MOVABLE ELECTRODE]

[0066] Figure 4 and Figure 5 are a perspective view and a sectional view of the movable electrode according to an embodiment of the present application.

[0067] Referring to Figure 4 and Figure 5 , the movable electrode 100 according to an embodiment can be connected to the movable portion rod L1 and be composed of an electrically conductive material. The movable portion rod L1 can be connected to a load or a power source outside the arc extinguishing chamber 10 for a bypass switch.

[0068] In addition, a protrusion 110 can be formed at one end of the movable electrode 100. For example, the one end here can be a lower end as shown in Figure 2 and Figure 3 , or an upper end as shown in Figure 4 and Figure 5 .

[0069] In addition, the one end of the movable electrode 100 can be spaced apart from the other end of the fixed electrode 200 at a predetermined distance and be disposed opposite to each other. For example, the other end here can be an upper end in the drawings.

[0070] The other end of the movable electrode 100 can be connected to the driving portion 300 described later. For example, the movable electrode 100 can be moved (pushed) downward by the driving portion 300. When the movable electrode 100 is moved (pushed), the protrusion 110 formed at the one end of the movable electrode 100 can be interference-fitted to the first groove portion 210 formed at the other end of the fixed electrode 200.

[0071] Thus, if the movable electrode 100 is moved (pushed), the protrusion 110 formed at the one end of the movable electrode 100 is interference-fitted to the first groove portion 210 formed at the other end of the fixed electrode 200, so that even if the movable electrode 100 is pushed at high speed, a chattering phenomenon does not occur, and thus it is possible to effectively and stably protect the module at the rear end of the bypass switch from an overcurrent by rapidly returning the fault current in its entirety, and further, it is possible to prevent an accident caused by an overcurrent.

[0072] The chattering phenomenon here is a phenomenon in which, after the movable electrode is pushed, the contacts of the movable electrode and the fixed electrode repeatedly become a closed state (close) and an open state (open) within a predetermined time due to mechanical vibration.

[0073] [Protrusion]

[0074] The protrusion 110 can be formed along the outer periphery of one end of the movable electrode 100. Alternatively, the protrusion 110 can be formed by being integrally connected along the outer periphery of one end of the movable electrode 100.

[0075] For example, as shown in FIG. 1, in the case where the movable electrode 100 is cylindrical, the protrusion 110 can be in a ring shape corresponding to being integrally connected along the outer periphery of the cylinder. Alternatively, as shown in FIG. 2, the protrusion 110 can be in a ring shape corresponding to being integrally connected along the outer periphery of the cylinder, and the outer peripheral surface of the protrusion 110 can be smoothly connected to the outer peripheral surface of one end of the movable electrode 100. Figures 2 to 5 Figures 2 to 5 For example, as shown in FIG. 1, in the case where the movable electrode 100 is cylindrical, the protrusion 110 can be in a ring shape corresponding to being integrally connected along the outer periphery of the cylinder. Alternatively, as shown in FIG. 2, the protrusion 110 can be in a ring shape corresponding to being integrally connected along the outer periphery of the cylinder, and the outer peripheral surface of the protrusion 110 can be smoothly connected to the outer peripheral surface of one end of the movable electrode 100.

[0076] However, the present application is not limited to this configuration. For example, the protrusion 110 can be discontinuously formed along the outer periphery of one end of the movable electrode 100. Alternatively, the protrusion 110 can be formed inside the outer periphery of one end of the movable electrode 100 at a prescribed distance therefrom. That is, the outer peripheral surface of the protrusion 110 can not be smoothly connected to the outer peripheral surface of one end of the movable electrode 100.

[0077] Thus, since the inter-electrode contact area is increased by the protrusion 110 being formed along the outer periphery of one end of the movable electrode 100, the protrusion 110 is reliably interference-fitted with the first groove portion 210, and thus the occurrence of the chattering phenomenon can be effectively prevented.

[0078] In addition, since the total inter-electrode contact area is increased to reduce the inter-electrode contact resistance value, the temperature increase at the time of energization can be suppressed, and thus the module at the rear end of the bypass switch can be effectively prevented from being damaged.

[0079] In addition, by the protrusion 110 being formed along the outer periphery of one end of the movable electrode 100, the diameter, thickness, or width of the protrusion 110 is small, and thus the protrusion 110 is easily deformed. Therefore, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 side in a misaligned state, as a portion of the protrusion 110 that is first inserted and engaged in the first groove portion 210 is deformed, the remaining portion of the protrusion 110 can be easily inserted and engaged in the first groove portion 210.

[0080] In addition, since the protrusion 110 is integrally connected and formed along the outer periphery of one end of the movable electrode 100, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 side in a misaligned state, as a portion of the protrusion 110 that is first inserted and engaged in the first groove portion 210 is deformed, an adjacent portion of the protrusion 110 connected to the portion can be guided to be inserted and engaged in the first groove portion 210.

[0081] ​Then, the entire protrusion 110 can be finally easily and stably combined with the first groove portion 210. That is, the final movable electrode 100 can be reconfigured to the fixed electrode 200 in an aligned state and combined with the fixed electrode 200. Accordingly, it is possible to prevent the total contact area between the electrodes from being reduced due to only a specific portion of the movable electrode 100 being combined with the fixed electrode 200 and the contact resistance value between the electrodes being increased to cause a temperature to rise at the time of energization, thereby damaging the module of the bypass switch rear end.

[0082] Specifically, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 side in a misaligned state, such that only a portion of the protrusion 110 is first inserted and combined into the first groove portion 210, if the driving portion 300 continuously applies a force to the movable electrode 100, the remaining portion of the protrusion 110 can be gradually inserted and combined into the first groove portion 210 as the portion is deformed. Accordingly, the entire protrusion 110 is stably inserted and combined into the first groove portion 210, thereby enabling the movable electrode 100 to be reconfigured to the fixed electrode 200 in an aligned state.

[0083] The end portion 112 of the protrusion 110 can be formed with a curvature.

[0084] As such, since the end portion 112 of the protrusion 110 is formed with a curvature, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 side in a misaligned state, the protrusion 110 can be easily inserted and combined into the first groove portion 210 by sliding.

[0085] In addition, the outer circumferential surface 114 of the protrusion 110 can be formed to be inclined inwardly. For example, as shown in FIG. 6, the outer circumferential surface 114 of the protrusion 110 can be formed to be inclined inwardly as it is distanced from the side of the movable electrode 100. Figures 2 to 5

[0086] At this time, the maximum value of the diameter, thickness, or width of the protrusion 110 can be greater than the value of the diameter, thickness, or width of the first groove portion 210.

[0087] As such, since the outer circumferential surface 114 of the protrusion 110 is formed to be inclined inwardly, the protrusion 110 can be easily inserted into the first groove portion 210 and be interference-fitted, thereby enabling the chattering phenomenon to be effectively suppressed.

[0088] In addition, since the outer circumferential surface 114 of the protrusion 110 is formed to be inclined inwardly, the value of the diameter, thickness, or width of the end portion 112 of the protrusion 110 is reduced, and thus, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 side in a misaligned state, the protrusion 110 can be easily inserted and combined into the first groove portion 210.

[0089] On the other hand, as shown in FIG. 7, the outer circumferential surface 114 of the protrusion 110 can be formed to be inclined outwardly. Figures 2 to 5 ​As shown, not only the outer peripheral surface 114 of the protrusion 110, but also the outer peripheral surface of the movable electrode 100 side which is smoothly connected to the outer peripheral surface 114 of the protrusion 110 can be formed to be inclined inwardly.

[0090] A concavo-convex can be formed in the outer peripheral surface 114 or the inner peripheral surface of the protrusion 110.

[0091] Thus, by forming the concavo-convex in the outer peripheral surface 114 or the inner peripheral surface of the protrusion 110, the protrusion 110 can be more easily interference-fitted with the first groove portion 210, thereby effectively suppressing the chatter phenomenon.

[0092] On the other hand, a second groove portion 120 can be formed along the inner periphery of the protrusion 110. The contents related to this will be described below.

[0093] [Second groove portion]

[0094] The second groove portion 120 can be formed in one end of the movable electrode 100 along at least either one of the inner periphery and the outer periphery of the protrusion 110. However, in the Figures 2 to 5 , since the outer peripheral surface of the one end of the movable electrode 100 is smoothly connected to the outer peripheral surface of the protrusion 110, the second groove portion 120 cannot be formed in the one end of the movable electrode 100 along the outer periphery of the protrusion 110. The detailed contents will be described in Figures 8 to 11 .

[0095] Thus, since the second groove portion 120 is formed in the one end of the movable electrode 100 along at least either one of the inner periphery and the outer periphery of the protrusion 110, the protrusion 110 can be more easily deformed. And even if the movable electrode 100 is inclinedly moved (pushed in) to the fixed electrode 200 side in a misaligned state, a portion of the protrusion 110 which is first inserted into the first groove portion 210 can be more easily deformed due to the second groove portion 120, so that the remaining portion of the protrusion 110 can be more easily inserted into the first groove portion 210. Thereby, the movable electrode 100 can finally be reconfigured in an aligned state to the fixed electrode 200 and combined with the fixed electrode 200. Thus, it is possible to prevent the reduction of the total contact area between the electrodes and the increase of the contact resistance value between the electrodes due to the combination of only a specific portion of the movable electrode 100 with the fixed electrode 200, thereby causing the temperature to increase at the time of energization, and thus damaging the module of the rear end of the bypass switch.

[0096] [Fixed electrode]

[0097] Figure 6 and Figure 7 are a perspective view and a sectional view of the fixed electrode of an embodiment of the present application.

[0098] Referring to Figure 2 , Figure 3 , Figure 6 andFigure 7 The fixed electrode 200 according to an embodiment can be connected with the fixed portion rod L2 and be composed of an electrically conductive material. The fixed portion rod L2 can be connected with a load or a power source outside the arc extinguishing chamber 10 for the bypass switch.

[0099] In addition, the other end of the fixed electrode 200 can be formed with a first groove portion 210. The other end here can mean the upper end in the drawing.

[0100] In addition, the other end of the fixed electrode 200 can be disposed opposite to the one end of the movable electrode 100 at a prescribed distance apart.

[0101] The other end of the movable electrode 100 can be connected with the driving portion 300 described later. For example, the movable electrode 100 can be moved (pushed in) downward by the driving portion 300. In the case where the movable electrode 100 is moved (pushed in), the protrusion portion 110 can be interference-fitted with the first groove portion 210 formed at the other end of the fixed electrode 200.

[0102] [First groove portion]

[0103] The first groove portion 210 can be formed at the other end of the fixed electrode 200 to correspond to the shape of the protrusion portion 110. The protrusion portion 110 can be inserted into and interference-fitted with the first groove portion 210.

[0104] The depth of the first groove portion 210 can be greater than the height of the protrusion portion 110.

[0105] Thus, since the depth of the first groove portion 210 is greater than the height of the protrusion portion 110, the peripheral portion of the first groove portion 210 in the fixed electrode 200 can be easily deformed. Also, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 side in a misaligned state, since the peripheral portion of the first groove portion 210 that is first combined with a portion of the protrusion portion 110 in the fixed electrode 200 can be easily deformed, the remaining portion of the protrusion portion 110 can also be more easily inserted into and combined with the first groove portion 210. Thereby, the movable electrode 100 can finally be disposed in an aligned state with the fixed electrode 200 and combined therewith. Therefore, it is possible to prevent the total contact area between the electrodes from being reduced due to only a specific portion of the movable electrode 100 being combined with the fixed electrode 200 and the contact resistance value between the electrodes from being increased, thereby causing the temperature to rise at the time of energization and damaging the module at the rear end of the bypass switch.

[0106] On the other hand, the space S between the one side of the movable electrode 100 and the other side of the fixed electrode 200 can be in a vacuum state.

[0107] Since the space S between one side of the movable electrode 100 and the other side of the fixed electrode 200 is in a vacuum state, the movable electrode 100 and the fixed electrode 200 can be arranged relatively close in the normal state, and thus the distance (push-in distance) that the movable electrode 100 needs to move in the event of an accident can be shortened. Thus, the bypass switch arc-extinguishing chamber 10 can quickly protect the module at the rear end of the bypass switch from an overcurrent by quickly returning a fault current, and can prevent an accident caused by an overcurrent.

[0108] In addition, by using a vacuum as an insulating medium, environmental pollution can be prevented, and the interior of the bypass switch arc-extinguishing chamber 10 can be kept clean.

[0109] [Drive Section]

[0110] The drive section 300 can be coupled to the other end of the movable electrode 100.

[0111] The drive section 300 can move (push in) the movable electrode 100 toward the fixed electrode 200. Specifically, for example, the drive section 300 can be provided with a magnet, a spring, gunpowder, or the like, and can move (push in) the movable electrode 100 by magnetic force, elastic restoring force, explosive force, or the like.

[0112] [Corrugated Tube]

[0113] The corrugated tube 400 can be coupled to the outer circumferential surface of the movable electrode 100. The corrugated tube 400 can be composed of a material that can be stretched and contracted. However, as shown in Figure 2 and Figure 3 , in the case where the corrugated tube 400 is formed in a shape such as a concave-convex portion, it can be linearly deformed by contraction and expansion even if it is composed of a metal material.

[0114] The corrugated tube 400 can support the movable electrode 100 to be movable toward the fixed electrode 200.

[0115] Figures 8 to 11 is a cross-sectional view showing the open state of the bypass switch arc-extinguishing chamber according to another embodiment of the present application.

[0116] Referring to Figure 8 and Figure 9 , according to another embodiment, the protruding portion 110 formed in the movable electrode 100 of the bypass switch arc-extinguishing chamber 10 can be formed inside the one end of the movable electrode 100. That is, unlike Figure 2 and Figure 3 , the protruding portion 110 can be formed inside at a predetermined distance from the outer circumferential surface of the one end of the movable electrode 100.

[0117] Specifically, for example, the protruding portion 110 can be formed in a dome shape ( Figure 8 ) in which the outer circumferential surface is inclined toward the inside or a ring (Figure 9 )form.

[0118] On the other hand, since the protrusion 110 is formed on the inner side of one end of the movable electrode 100, it is different from... Figure 2 and Figure 3 A second groove 120b can be formed at one end of the movable electrode 100 along the outer periphery of the protrusion 110. Alternatively, it can be as follows: Figure 2 and Figure 3 As shown, a second groove 120a is formed at one end of the movable electrode 100 along the inner periphery of the protrusion 110.

[0119] Thus, since the protrusion 110 is formed inside one end of the movable electrode 100, and a second groove 120b can be formed along the outer periphery of the protrusion 110 at one end of the movable electrode 100, the protrusion 110 can be easily deformed. Therefore, even if the movable electrode 100 moves (pushes in) tilted towards the fixed electrode 200 in an misaligned state, the portion of the protrusion 110 that is first inserted into and engaged with the first groove 210 is more easily deformed by the second groove 120b, so that the remaining portion of the protrusion 110 can also be more easily inserted into and engaged with the first groove 210. Therefore, the movable electrode 100 can ultimately be reconfigured to and engaged with the fixed electrode 200 in an aligned state. Therefore, it is possible to prevent the total contact area between the electrodes from decreasing due to only a specific portion of the movable electrode 100 engaging with the fixed electrode 200, and the contact resistance between the electrodes from increasing, which could lead to a rise in temperature during energization and damage to the module downstream of the bypass switch.

[0120] Furthermore, since the contact area between the electrodes is increased due to the ring shape of the protrusion 110, the protrusion 110 reliably fits the first groove 210 with an interference fit, thereby effectively preventing chattering. Also, since the contact resistance between the electrodes is reduced, damage to the module at the rear of the bypass switch can be effectively prevented by suppressing temperature rise during energization. Additionally, since the protrusion 110 is easily deformable due to its smaller diameter, thickness, or width, even if the movable electrode 100 is moved (pushed in) towards the fixed electrode 200 in an misaligned state, the remaining portion of the protrusion 110 can be easily inserted into the first groove 210 by first deforming a portion of the protrusion 110 that is inserted into the first groove 210. Thus, the movable electrode 100 can ultimately be repositioned in an aligned state and coupled to the fixed electrode 200. Therefore, it is possible to prevent the total contact area between electrodes from being reduced due to only a specific part of the movable electrode 100 being combined with the fixed electrode 200, and the contact resistance between electrodes from increasing, which would lead to a rise in temperature when energized and thus damage the module at the back end of the bypass switch.

[0121] Reference Figure 10 and Figure 11At one end of the movable electrode 100 of the arc extinguishing chamber 10 for a bypass switch according to an embodiment, a plurality of protruding portions 110 can be formed.

[0122] Specifically, for example, as shown in Figure 10 , a plurality of dome-shaped protruding portions 110 can be formed at one end of the movable electrode 100, or as shown in Figure 8 , a plurality of ring-shaped protruding portions 110 can be formed at one end of the movable electrode 100. Figure 11 Figure 9

[0123] Thus, since the inter-electrode contact area is increased due to the plurality of protruding portions 110 formed at one end of the movable electrode 100, the protruding portions 110 can be reliably interference-fitted with the first groove portion 210, thereby effectively preventing the occurrence of the chatter phenomenon.

[0124] In addition, since the inter-electrode contact resistance value is reduced due to the increase in the total inter-electrode contact area, damage to the module at the rear end of the bypass switch can be effectively prevented by suppressing the temperature rise at the time of energization.

[0125] In addition, since each of the protruding portions 110 is formed to have a small size so that the protruding portions 110 are easily deformed, even if the movable electrode 100 is moved (pushed in) to the fixed electrode 200 side in a misaligned state, as the protruding portions 110 that are first inserted into the first groove portion 210 are deformed, the remaining protruding portions 110 can be easily inserted into the first groove portion 210.

[0126] Thus, finally, the entire protruding portions 110 can be easily and stably coupled with the first groove portion 210. That is, the movable electrode 100 can finally be reconfigured to the fixed electrode 200 in an aligned state and coupled with the fixed electrode 200. Thereby, it is possible to prevent the temperature rise at the time of energization due to the decrease in the total inter-electrode contact area caused by the coupling of only a specific portion of the movable electrode 100 with the fixed electrode 200 and the increase in the inter-electrode contact resistance value, thereby damaging the module at the rear end of the bypass switch.

[0127] In addition, as shown in Figure 10 and Figure 11 , at least two of the plurality of protruding portions 110 formed at one end of the movable electrode 100 can be formed at equal angular intervals on a circumference centered on the central axis A of the movable electrode 100. Figure 10 and Figure 11 show a case in which two dome-shaped or ring-shaped protruding portions 110 are formed at 180-degree intervals on a circumference centered on the central axis A.

[0128] ​​Thus, by forming at least two of the plurality of protrusions 110 formed at one end of the movable electrode 100 at equal angular intervals on a circumference centered on the central axis A of the movable electrode 100, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 side in a misaligned state, as the plurality of protrusions 110 symmetrically formed with the central axis A as a reference are inserted into engagement with the first groove portion 210, the movable electrode 100 can be easily reconfigured in an aligned state and engaged with the fixed electrode 200.

[0129] In addition, at one end of the movable electrode 100, a second groove portion 120 can be formed with respect to at least one of the protrusions 110 along at least one of the inner periphery and the outer periphery of the protrusion 110.

[0130] Thus, since the second groove portion 120 is formed with respect to at least one of the protrusions 110 along at least one of the inner periphery and the outer periphery of the protrusion 110 at one end of the movable electrode 100, the protrusion 110 in which the second groove portion 120 is formed can be more easily deformed. Thus, even if the movable electrode 100 is moved (pushed in) obliquely to the fixed electrode 200 side in a misaligned state, the protrusion 110 that is first inserted into engagement with the first groove portion 210 is more easily deformed due to the second groove portion 120, and thus the remaining protrusions 110 can be more easily inserted into engagement with the first groove portion 210. As a result, the movable electrode 100 can finally be reconfigured in an aligned state to the fixed electrode 200 and engaged with the fixed electrode 200. Thus, it is possible to prevent the total contact area between the electrodes from being reduced due to only a specific portion of the movable electrode 100 being engaged with the fixed electrode 200 and the contact resistance value between the electrodes from being increased, thereby causing the temperature to increase at the time of energization and damaging the module at the rear end of the bypass switch.

[0131] Figure 12 FIG. 7 is a cross-sectional view showing the open state of the arc-extinguishing chamber for a bypass switch according to another embodiment of the present application.

[0132] Referring to Figure 12 , the arc-extinguishing chamber for a bypass switch 20 according to another embodiment can include a movable electrode 100, a fixed electrode 200, a driving portion 300, and a bellows 400. Hereinafter, only the differences from Figure 2 will be described.

[0133] Unlike Figure 2 , the protrusion 210 and the second groove portion 220 can be formed at the other end of the fixed electrode 200, rather than at one end of the movable electrode 100, and the first groove portion 110 can be formed at one end of the movable electrode 100, rather than at the other end of the fixed electrode 200.

[0134] In Figure 12In the arc extinguishing chamber 20 for the bypass switch, only the electrodes in which the protrusion 210, the first groove 110, and the second groove 220 are formed are interchanged with each other, and thus the description of all the configurations can use the description of the above-described embodiment.

[0135] As described above, although the present application has been described with reference to the illustrated drawings, the present application is not limited to the embodiments and the drawings disclosed in the present specification, and it is self-evident that a person of ordinary skill in the art to which the present application pertains can make various modifications within the scope of the technical idea of the present application.

[0136] Also, even if the effects of the configurations of the present application are not described by explicitly describing when the embodiments of the present application are described, it should be recognized that the effects of the configurations are predictable.

Claims

1. An arc extinguishing chamber for a bypass switch, characterized by comprising: a movable electrode formed with a protrusion at one end; a fixed electrode formed with a first groove portion at the other end in a form corresponding to the protrusion, disposed so that the one end of the movable electrode opposes the other end of the fixed electrode at a prescribed distance apart; and a drive portion that moves the movable electrode toward the fixed electrode, wherein the protrusion is inserted into the first groove portion and is interference-fitted in the case where the drive portion moves the movable electrode, wherein an outer peripheral surface of the protrusion is formed so as to be inclined toward the inside, and wherein a maximum value of a diameter or a thickness or a width of a portion of the protrusion that is inserted into the first groove portion is greater than a maximum value of a diameter or a thickness or a width of a portion of the first groove portion into which the protrusion is inserted.

2. The arc extinguishing chamber for a bypass switch according to claim 1, characterized in that the protrusion is formed along an outer periphery of the one end of the movable electrode.

3. The arc extinguishing chamber for a bypass switch according to claim 1, characterized in that the protrusion is formed on the inside of the one end of the movable electrode.

4. The arc extinguishing chamber for a bypass switch according to claim 3, characterized in that the protrusion is formed in a ring shape.

5. The arc extinguishing chamber for a bypass switch according to any one of claims 2 to 4, characterized in that a second groove portion is formed at the one end of the movable electrode along at least either of an inner periphery and an outer periphery of the protrusion.

6. The arc extinguishing chamber for a bypass switch according to claim 1, characterized in that a plurality of the protrusions are formed at the one end of the movable electrode.

7. The arc extinguishing chamber for a bypass switch according to claim 6, characterized in that at least two of the protrusions are formed at equal angular intervals on a circumference centered on a central axis of the movable electrode.

8. The arc extinguishing chamber for a bypass switch according to claim 1, characterized in that an end portion of the protrusion is formed with a curvature.

9. The arc extinguishing chamber for a bypass switch according to claim 1, characterized in that a concavo-convex is formed on an outer peripheral surface or an inner peripheral surface of the protrusion.

10. The arc extinguishing chamber for a bypass switch according to claim 1, characterized in that a depth of the first groove portion is greater than a height of the protrusion.

11. The arc extinguishing chamber for a bypass switch according to claim 1, characterized in that a space between the one end and the other end is in a vacuum state. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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