Short circuit device for distribution line

Abstract

The power distribution circuit breaker comprises a base part, a first terminal support fixedly installed on one side of the base part, a second terminal support movably installed on the other side of the base part, a moving part moving the second terminal support to change the distance between the first terminal support under the action of external force, and a hitting end extending a certain length along the first terminal support once combined with the second terminal support, wherein the contact terminal between the second terminal support and the first terminal support is contacted or separated, and the circuit breaker is manually switched by only mechanical structure without motor driving, thereby preventing the circuit breaker from being incorrectly operated due to the decline or unevenness of the motor driving force.

Description

Technical Field

[0001] This invention relates to circuit breakers for power distribution lines. Background Technology

[0002] A circuit breaker (DS) for power distribution lines is a type of electrical equipment. It mainly refers to a device used in transmission lines or substations to disconnect the main circuit connection in order to switch the circuit breaker to an off-load state.

[0003] Generally speaking, circuit breakers for power distribution lines are designed to switch between the first and second terminals by means of a starting contactor during operation. They are also classified as electric or manual depending on the driving method of the starting contactor.

[0004] Compared to the manual method, the electric method is more convenient and is therefore more widely used. It mainly involves connecting the shaft of the start contactor to an electric motor to drive its rotation, thereby causing the start contactor to rotate and break the circuit.

[0005] However, due to factors such as aging of the circuit breaker causing it to become stuck, the driving force of the motor drive is weak, which frequently leads to the circuit breaker failing to operate, resulting in problems during maintenance.

[0006] Moreover, in some cases, due to the uneven driving force when the motor is driven, the contact contactor (10) may experience contact impact and generate electric arc when it makes a sharp turn, which poses a high risk of safety accidents.

[0007] Therefore, in order to solve this traditional problem, various technologies are being developed. In related aspects, Korean Patent No. 10-2015-0073889 describes a method that uses a hydraulic actuator to achieve compatibility between hydraulics and transmission while minimizing contact impact. As a result, the improved circuit breaker switching device can perform switching operations smoothly without any malfunctions.

[0008] Existing technical documents

[0009] Patent documents

[0010] Patent Document 1: Korean Patent Publication No. 10-2015-0073889 Summary of the Invention

[0011] The problem that the invention aims to solve

[0012] Therefore, in order to solve these problems, the present invention aims to provide a circuit breaker for power distribution lines, which prevents circuit breaker malfunctions caused by reduced or uneven motor driving force by manually switching the circuit breaker using only mechanical structure without motor drive.

[0013] Furthermore, the present invention aims to visualize the opening and closing status of the circuit breaker in stages through mechanical action, enabling operators to intuitively understand the opening and closing status of the circuit breaker, thereby providing circuit breakers for power distribution lines and reducing the risk of safety accidents.

[0014] Methods for solving problems

[0015] To achieve the above-mentioned objectives, according to an embodiment of the present invention, a circuit breaker for power distribution lines includes: a base portion; a first insulator fixedly mounted on one side of the base portion supporting a first terminal; a second insulator movably mounted on the other side of the base portion supporting a second terminal; a movable component that moves the second insulator so that its distance from the first insulator changes under the action of an external force; and a striking end that extends a predetermined length toward the first terminal once engaged with the second terminal, including a contact terminal that contacts or separates from the first terminal due to the movement of the second terminal.

[0016] It is worth mentioning that the moving component firstly includes a moving link that connects to the second terminal through a terminal moving hole formed on the other side of the base portion in order to guide the movement of the second terminal; a screw bar that extends perpendicularly to the opposite direction of the first and second sections at a designated position on the base portion; and a nut component that may include connecting the rod end of the moving link to a pivot and moving up and down along a screw formed on the screw bar according to an external force, thereby moving the second section.

[0017] It is worth mentioning that the first terminal is a terminal member with a four-cornered concave-convex shape that is open on one side, so that the striking end of the contact terminal can enter and be fixed; and a marking member installed on an ellipsoidal surface opposite to one side of the terminal member, which may include a marking member that responds to the entry length of the contact terminal into the terminal member to visually express the contact stability between the contact terminal and the terminal member.

[0018] It is worth mentioning that the end path extends vertically from one end of the contact terminal to the base direction, and includes a vertical protrusion that causes the striking end of the contact terminal to rotate upward when pressure is applied; and a pressure member installed at the other end of the base portion, which may also include a pressure member that presses the vertical protrusion, the protrusions being approached by the movement of the second.

[0019] Invention Effects

[0020] As described above, the circuit breaker for power distribution lines provided by the present invention has the advantage of not requiring a motor drive, but only using a mechanical structure to manually switch the circuit breaker, thus avoiding circuit breaker malfunctions caused by a decrease in motor driving force or uneven motor driving force.

[0021] Furthermore, the circuit breaker for power distribution lines provided by this invention visualizes the opening and closing status of the circuit breaker in stages through mechanical actions, enabling operators to intuitively understand the opening and closing status of the circuit breaker, thereby reducing the risk of safety accidents. Attached Figure Description

[0022] Figure 1 and Figure 2 This is a schematic diagram illustrating a circuit breaker for power distribution lines in one embodiment of the present invention.

[0023] Figure 3 and Figure 4 This is a drawing illustrating the connection operation of a circuit breaker for a power distribution line according to an example of the present invention.

[0024] Figure 5 and Figure 6 This is a drawing illustrating the circuit-breaking operation of a circuit breaker for power distribution lines according to an example of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100: Circuit breaker for power distribution lines; 110: Base section;

[0027] 111: Terminal moving hole; 120: First terminal;

[0028] 121: Terminal component; 121a: Terminal hole;

[0029] 121b: Single-character version; 122: No stability indicator;

[0030] 122a: Stable chart; 122b: Stable chart pointer;

[0031] 130: First insulator; 140: Second terminal;

[0032] 150: Second item; 160: Moving part;

[0033] 161: Mobile link; 162: Screwdriver;

[0034] 163: Nut component; 170: Contact end;

[0035] 171: Vertical protrusion; 180: Pressure component. Detailed Implementation

[0036] The embodiments of the present invention will now be described with reference to the accompanying drawings. However, this detailed description will allow those skilled in the art to readily implement the invention. The invention can be embodied in many different forms and is not limited to the embodiments described herein. Furthermore, for the purpose of clearly illustrating the invention in the drawings, parts irrelevant to the description have been omitted, and similar reference numerals have been added to similar parts throughout the list. Additionally, even when detailed descriptions are omitted, parts readily understood by those skilled in the art have also been omitted.

[0037] Within the entire list and the scope of the claim, if a section contains a certain component, it means that other components may be included, rather than excluding other components, unless specifically stated otherwise.

[0038] Figure 1 and Figure 2 This is a schematic diagram illustrating a circuit breaker for power distribution lines in one embodiment of the present invention. (Refer to...) Figure 1 and Figure 2 According to one example of the present invention, the circuit breaker (100) for power distribution lines includes a base (110), a first insulator (130), a second insulator (150), a moving part (160), a contact terminal (170), and a pressure-applying part (180).

[0039] The base (110) is a device for installing various devices constituting the circuit breaker (100) for power distribution lines (i.e., the first (130), the second (150), the moving part (160), the contact terminal (170), and the pressure part (180). It may be composed of rod-shaped insulators to prevent leakage between the aforementioned devices.

[0040] The first insulator (130) supports the first terminal (120) and is fixedly mounted on one side of the base portion (110). At this time, the first terminal (120) may include a stability indicator (122) which is disposed on one side of the terminal member (121), on both sides of the terminal member (121), and the contact stability of the terminal member (121) is visually indicated by the insertion length of the terminal member (121) and the contact stability of the contact terminal (170) and the terminal member (121).

[0041] Figure 2 These are four views illustrating the first terminals (120). Figure 2 (a) is an enlarged four-view drawing of the first terminal (120). Figure 2 (b) is a low-view four-view diagram of the first terminal (120).

[0042] like Figure 2As shown in (a) and (b), the terminal component (121) includes a terminal hole (121a) formed by the two open sides of the aforementioned quadrangular prism, and a terminal plate (121b) that is hinged to the top of the aforementioned quadrangular prism and rotatable through the inlet and outlet of the contact terminal (170). The stability marking component (122) can be divided into several marking areas (122). According to the length of the aforementioned contact stability area and the stability area (122b) shown, one of the aforementioned stability areas can be displayed.

[0043] At this time, one end of the stable chart pointer (122b) is engaged with the rotation axis of the terminal plate (121b), and rotates according to the degree of rotation of the terminal plate (121b) so that the hitting end points to one of the above display areas.

[0044] The second terminal (150) supports the second terminal (140) and is movably mounted on the other side of the base portion (110). For this purpose, a terminal moving hole (111) is formed on the other side of the base portion (110) for guiding the movement of the second terminal (150), and the moving part (160), which will be described later, can pass through the terminal moving hole (111) and engage with the second terminal (150).

[0045] The moving member (160) moves the second (150) to a variable distance between the first (130) and the second (150) by an external force. For this purpose, the moving member (160) includes a moving chain (161) that, once passing through the stop hole (111), engages with the second stop hole (150); a screw rod (162) that extends perpendicularly in the opposite direction to the first and second stop rings (130 and 150) at a designated position on the base portion (110); and a nut (163) that engages with the striking end of the moving chain (161) and moves up and down the second stop hole (150) along the screw (162) formed by the external force. That is, the nut component (163) moves up or down toward the screw rod (162) according to the externally applied rotational force, and accordingly moves toward the first bar (130) along the moving hole (111) at one end of the moving chain (161), thereby causing the second bar (150) to move from the bottom (110) top toward the first bar (130) or away.

[0046] At this time, the movable link (161) may consist of a pair of linking members that connect the hinge shafts extending from the second section (150) and the nut member (163) to the hinge, thereby connecting the hinge shafts across each other.

[0047] Once the contact terminal (170) is engaged with the second terminal (150), the striking end extends a certain length toward the first terminal (130), and contacts or separates from the first terminal (130) by the movement of the second terminal (150). That is, the contact terminal (170) contacts the first terminal (130) when the second terminal (150) moves to the right on the drawing, and separates from the first terminal (130) when the second terminal (150) moves to the left on the drawing.

[0048] Similarly, the present invention can control the switching of the power distribution line fuse (100) by moving the second terminal (150) of the moving part (160).

[0049] Furthermore, by moving the movable member (160), the present invention causes the striking end of the contact end (170) separated from the first end (130) to rotate upward, which can more accurately achieve the separation state from the first end (130). For this purpose, a vertical protrusion (171) protruding perpendicular to the base (110) can be provided at one end of the contact end (170), and the striking end of the base (110) can include the pressure (180) of the vertical protrusion (171).

[0050] At this time, the pressure member (180) can extend vertically upward from the cross-side end of the base portion (110), and then the end bends vertically toward the second terminal (150), forming a vertical protrusion (171) that is pressure-approached by the movement of the second terminal (150) at its vertically bent end.

[0051] Furthermore, to avoid electrical errors, the vertical protrusions (171) and the pressure member (180) can be made of insulators due to the movement between them. It is worth noting that the pressure member (180) can be mounted on an insulator (not included) additionally configured on the base portion (110).

[0052] Figure 3 and Figure 4 These drawings are intended to illustrate the connection operation of a circuit breaker for power distribution lines according to an embodiment of the present invention. Figure 5 and Figure 6 These drawings are intended to illustrate the disconnection operation of a circuit breaker for power distribution lines according to an embodiment of the present invention. Referring to them, the operation of the circuit breaker (100) for connecting or disconnecting the first terminal (120) and the second terminal (140) is described as follows:

[0053] Figure 3 The diagram shows an example of the second terminal (150) moving towards the first terminal (130) as the nut component (163) moves downward, and an example of the contact end (170) engaging with the terminal component (121). Figure 3 As shown, if the nut component (163) rotates in the direction shown in the figure and moves downward along the thread of the threaded rod (162), the angle between the moving link (161) and the threaded rod (162) decreases, causing the second terminal (150) to move towards the second terminal (130). The second terminal (150) moves towards the second terminal (130) and then towards the second terminal (130), resulting in the second terminal (150). As the distance gets closer, the striking end of the contact end (170) will enter the terminal hole (121a) formed on the terminal component (121).

[0054] Figure 4 This is an enlarged view drawn to illustrate the action of the first terminal (120) after the contact terminal (170) enters. Figure 4 (a) indicates the state where the contact terminal (170) is close to the side of the terminal hole (121a). Figure 4 (b) indicates the state in which the contact terminal (170) enters the terminal hole (121a). Figure 4 In this context, (c) indicates the state where the contact terminal (170) protrudes into the terminal hole (121a). For example... Figure 4 As shown in (a) inside (c), as the contact end (170) enters, the striking end of the contact end (170) rotates and pushes up the terminal plate (121b). The longer the entry length, the greater the rotation angle of the terminal plate (121b), and the greater the rotation angle of the stable clock hand (122b) combined with the terminal plate (161b). It can be seen that the stable clock hand (122b) indicating the unstable state indicates the safe state.

[0055] Similarly, the present invention is characterized in that the contact terminal (170) is fixed through the four corner concave-convex terminal members (121) and can stably maintain contact with the first terminal (120). Before the contact terminal (170) is fully inserted, an unsafe contact state is visually represented, and the operator can continuously move the second terminal (150) before the safe contact state is reached, so as to prevent unsafe contact from causing safety accidents.

[0056] Figure 5 It is a diagram. Figure 5An example is shown where, due to the upward movement of the nut component (163), the second terminal (150) moves away from the first terminal (130), and the contact end (170) separates from the terminal component (121). If the nut component (163) rotates in the direction shown in the figure and moves upward along the thread (162), the connection angle between the moving link (161) and the weld (162) widens, causing the second terminal (150) to move upward, and the distance between the second terminals (150) increases. As the distance between the insulators (130) increases, the striking end of the contact end (170) will disengage from the terminal hole (121a) formed on the terminal component (121). Furthermore, if the striking end of the contact end (170) disengages from the terminal hole (121a) formed on the terminal member (121), and if the second terminal (150) moves toward the pressure member (180), the pressure member (180) presses against the vertical protrusion (171) formed on the contact end (170), then the striking end of the contact end (170) will move upwards. Figure 5 As shown.

[0057] Figure 6 This is an enlarged view drawn to illustrate the action of the pressurizing vertical protrusion (171) of the pressurizing member (180). Figure 6 (a) in the diagram indicates the state where the vertical protrusion (171) approaches the direction of the pressure member (180). Figure 6 (b) in the diagram represents the state in which the vertical protrusion (171) begins to rotate under pressure from the pressure member (180). Figure 6 (c) in the figure represents the state in which the vertical protrusion (171) begins to rotate under the pressure member (180). Similarly, in order for the vertical protrusion (171) to rotate under the pressure of the pressure member (180), causing the striking end of the contact end (170) to rotate upward, according to the principle of levers, the pressure member (180) is more likely to bear force when applying pressure below the vertical protrusion (171). Therefore, within the starting range of rotation at one end of the contact end (170), the length of the vertical protrusion (171) should be maximized, and the pressure member (180) should apply pressure to the bottom of the vertical protrusion (171) as much as possible.

[0058] Similarly, the circuit breaker for power distribution lines provided by the present invention is characterized by the fact that, in the absence of motor drive, the circuit breaker can be manually switched using only a mechanical structure, which can prevent the circuit breaker from malfunctioning due to a decrease in motor drive force or uneven motor drive force.

[0059] Furthermore, the circuit breaker for power distribution lines provided by this invention is characterized by visualizing the opening and closing status of the circuit breaker in stages through mechanical actions, enabling operators to intuitively understand the opening and closing status of the circuit breaker, thereby reducing the risk of safety accidents.

[0060] The embodiments of the present invention have been described above, but the scope of the present invention is not limited thereto. It includes all changes and modifications to the present invention from the embodiments onwards that are readily altered by a person of ordinary skill in the art to which the present invention pertains and are considered equivalent.

Claims

1. A circuit breaker for power distribution lines, characterized in that, include: Base section; Support the first terminal, and fix the first insulator to one side of the aforementioned base portion; It supports a second terminal and is movable and mounted on the other side of the aforementioned base portion; Move the moving part mentioned in the second clause above, so that its distance from the part mentioned in the first clause changes under the action of an external force; and Once the contact terminal is engaged with the second terminal, the striking end extends a predetermined length toward the first terminal and comes into contact with or separates from the first terminal due to the movement of the second terminal.

2. The circuit breaker for power distribution lines according to claim 1, characterized in that, The aforementioned moving parts include: In order to guide the movement of the second insulator, a moving link is formed through the insulator moving hole formed on the other side of the base portion and combined with the second insulator. A screw rod extending perpendicularly in the opposite direction to the first and second sections at a designated location on the base portion; and By combining the rod end and the pivot of the aforementioned movable link, and moving it up and down along the screw formed on the aforementioned screw rod by external force, the nut component of the aforementioned second terminal can be moved.

3. The circuit breaker for power distribution lines according to claim 1, characterized in that, The first terminal mentioned above includes: To ensure the striking end of the aforementioned contact terminal passes through and is fixed, a terminal component with a four-cornered concave-convex shape that is open on both sides is used; and A stability indicator component installed on one side of the terminal member, which responds to the entry length of the contact terminal into the terminal member, to visually express the contact stability between the contact terminal and the terminal member.

4. The circuit breaker for power distribution lines according to claim 1, characterized in that, Also includes: A vertical protrusion protruding from one end of the contact terminal toward the base portion, which, when pressed, causes the striking end of the contact terminal to rotate upwards; and Installed at the other end of the base portion, additional pressure members pressurize the vertical protrusion, which is approached by the movement of the second terminal.

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