Excitation type circuit breaking device
By introducing excitation design and insulating structure into the circuit breaker, the problems of arc reignitment and metal debris fall in traditional circuit breaker devices are solved, and faster arc extinguishing time and higher stability are achieved.
Patent Information
- Application Number
- CN202310801254.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-30
- Publication Date
- 2024-12-31
AI Technical Summary
Traditional circuit breakers are prone to arc reignitment when disconnecting conductive parts, resulting in long arc extinguishing time, metal debris falling to the housing and possibly burning the housing.
An excitation circuit breaker is designed, including a housing, an excitation source, an impact member and an insulating structure. The excitation source provides initial power to move the impact member from one end of the housing to the other end. The insulating structure wipes the cross-section of the conductive member during the movement. , remove metal debris, and shorten the pre-arc time and arc extinguishing time by guiding bevels and elastic insulation to avoid arc reignitment.
It effectively shortens the arc extinguishing time, reduces the shell temperature, avoids metal debris falling and burns the shell, and improves the stability and safety of the circuit breaker.
Smart Images
Figure CN119230346A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electric power and new energy, and in particular to an excitation type circuit breaker. Background Art
[0002] With the advancement of science and technology, in order to protect the equipment in the circuit and avoid circuit failures that endanger the safety of life and property, devices for protecting circuits have come into being. In traditional technology, the purpose of protecting the equipment in the circuit is achieved by impacting the conductive part with an impact piece to cause the conductive part to break. The impact piece moves from the first end to the second end, and the metal debris generated by the disconnection of the conductive part falls into the shell and easily burns the shell, causing the arc to spread and the arc extinguishing time to be long. Summary of the invention
[0003] Based on this, it is necessary to provide an excitation type circuit breaker.
[0004] The present application provides an excitation type circuit breaker for protecting a circuit, comprising: a housing, an excitation source, an impact piece, an insulating structure and a conductive piece, wherein the housing has a first end and a second end that are axially away from each other, the excitation source is mounted on the first end, the excitation source is connected to the impact piece, the insulating structure is mounted on the impact piece, the insulating structure protrudes from the outer peripheral wall of the impact piece and contacts the inner peripheral wall of the housing, and the conductive piece radially penetrates the housing;
[0005] The excitation source is started under preset conditions and provides initial power to the impact member, and the impact member moves axially from the first end to the second end and breaks the conductive member. During this period, the insulating structure can wipe the cross section of the conductive member.
[0006] With such a configuration, when the excitation source is started under preset conditions so that the impact piece disconnects the conductive piece, the insulating structure can wipe the cross-section of the conductive piece retained on the shell during the movement of the impact piece from the first end to the second end. The insulating structure can carry metal debris on the conductive piece away from the disconnected conductive piece, thereby preventing the disconnected conductive piece from reigniting the arc, shortening the arc extinguishing time, lowering the temperature of the shell, and preventing metal debris generated by the disconnection of the conductive piece from falling into the shell and burning the shell.
[0007] In one of the embodiments, the insulating structure includes a guiding slope, and the guiding slope is used for guiding when the impact member contacts the conductive member.
[0008] With such arrangement, the guiding slope can shorten the time required for the impact member to break the conductive member, thereby shortening the pre-arcing time.
[0009] In one embodiment, the insulating structure is elastic, and the insulating member is elastically sealed against the inner peripheral wall of the shell.
[0010] With such arrangement, the elastic insulating structure can provide a buffer for the movement of the impact piece from the first end to the second end, thereby preventing the impact piece from breaking through the shell; the insulating piece enables the insulating piece to be in two relatively isolated spaces on both sides in the axial direction.
[0011] In one embodiment, the insulating structure includes two insulating parts. When the impact part breaks the conductive part, one of the insulating parts is located at the first end of the conductive part, and the other insulating part is located at the second end of the conductive part. A sealed first chamber is formed between the two insulating parts, the impact part and the shell.
[0012] With such arrangement, when the impact member separates the conductive member, the first chamber can provide an arc extinguishing space for the disconnected conductive member, so that the arc in the first chamber can fully contact the surrounding wall of the chamber, and the first chamber can shorten the arc extinguishing time.
[0013] In one embodiment, two mounting grooves are provided on the impact member, and the mounting grooves are used to mount the insulating member. The axial distance between the two mounting grooves is greater than the width of the conductive member.
[0014] With such a configuration, the mounting groove can prevent the insulating part installed therein from axial displacement during the movement of the impact part, prevent the insulating part from hindering the movement of the impact part, and shorten the pre-arcing time; when the impact part disconnects the conductive part, the insulating part installed in the mounting groove can be axially away from the disconnected conductive part, avoiding the melting of the insulating part.
[0015] In one embodiment, the mounting groove is a straight groove or a dovetail groove.
[0016] Such an arrangement facilitates the opening of the installation groove, shortens the time required for opening the installation groove, and reduces the processing cost of the installation groove; secondly, it facilitates the installation of the insulating member and shortens the installation time of the insulating member.
[0017] In one embodiment, the mounting groove is an annular groove.
[0018] With such arrangement, the processing time of the annular installation groove is short, the cost required for the installation groove is reduced, the installation of the insulating member is convenient, and the installation time of the insulating member is shortened.
[0019] In one embodiment, the insulating member is an O-ring.
[0020] Such an arrangement facilitates the purchase of insulating parts and reduces the cost of a single insulating part. Secondly, the "O"-shaped sealing ring is quick to install, shortening the installation time required for the insulating part, thereby reducing the production cost of the insulating part.
[0021] In one of the embodiments, the shell is filled with arc-extinguishing wire or quartz sand.
[0022] With such arrangement, when the impact piece moves from the first end to the second end, the arc-extinguishing metal wire or quartz sand filled in the shell can provide a buffer for the fast-moving impact piece, thereby preventing the fast movement of the impact piece from breaking through the shell.
[0023] In one embodiment, the impact piece is integrally formed.
[0024] With such arrangement, the impact piece can withstand a large initial force, the integrally formed impact piece has high stability, and the stability of the excitation type circuit breaker device is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic structural diagram of the excitation type circuit breaker device of the present invention;
[0026] Figure 2 When the excitation source of the excitation type circuit breaker is not activated, Figure 1 The structural diagram in which AA is the cutting line;
[0027] Figure 3 After the impulse device of the excitation type circuit breaker breaks the conductive parts, Figure 1 Schematic diagram of the part of the structure where AA is the cutting line;
[0028] Figure 4 for Figure 2 Schematic diagram of the structure of the middle impact piece;
[0029] Figure 5 for Figure 4 Schematic diagram of the full cross-section structure;
[0030] Figure 6 for Figure 4 Schematic diagram of some structures;
[0031] Figure 7 for Figure 6 Schematic diagram of the full cross-section structure.
[0032] Reference numerals:
[0033] 100. Excitation type circuit breaker; 10. Shell; 11. First end; 12. Second end; 20. Excitation source; 30. Impact member; 31. Mounting groove; 40. Insulation structure; 41. Insulation member; 50. Conductive member; 1. First chamber. DETAILED DESCRIPTION
[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.
[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0040] With the advancement of science and technology, in order to protect the equipment in the circuit and avoid circuit failures that endanger the safety of life and property, devices for protecting circuits have come into being. In traditional technology, the purpose of protecting the equipment in the circuit is achieved by impacting the conductive part with an impact piece to cause the conductive part to break. The impact piece moves from the first end to the second end, and the metal debris generated by the disconnection of the conductive part falls into the shell and easily burns the shell, causing the arc to spread and the arc extinguishing time to be long.
[0041] Based on this, see Figure 1 , Figure 1 FIG. 1 is a schematic structural diagram of an excitation type circuit breaker device 100 in an embodiment of the present invention.
[0042] See also Figures 1 to 7 The present application provides an excitation type circuit breaker device 100 for protecting a circuit, comprising: a housing 10, an excitation source 20, an impact member 30, an insulating structure 40 and a conductive member 50, wherein the housing 10 has a first end 11 and a second end 12 which are axially away from each other, the excitation source 20 is mounted on the first end 11, the excitation source 20 is connected to the impact member 30, the insulating structure 40 is mounted on the impact member 30, the insulating structure 40 protrudes from the outer peripheral wall of the impact member 30 and contacts the inner peripheral wall of the housing 10, and the conductive member 50 radially penetrates the housing 10;
[0043] The excitation source 20 is started under preset conditions and provides initial power to the impact member 30 , and the impact member 30 moves axially from the first end 11 to the second end 12 and breaks the conductive member 50 . During this period, the insulating structure 40 can wipe the cross section of the conductive member 50 .
[0044] In this way, when the excitation source 20 is started under preset conditions so that the impact member 30 disconnects the conductive member 50, the insulating structure 40 can wipe the cross-section of the conductive member 50 retained on the shell 10 during the movement of the impact member 30 from the first end 11 to the second end 12. The insulating structure 40 can take the metal debris on the conductive member 50 away from the disconnected conductive member 50, thereby avoiding the phenomenon of the disconnected conductive member 50 reigniting the arc, shortening the arc extinguishing time, reducing the temperature of the shell 10, and preventing the metal debris generated by the disconnection of the conductive member 50 from falling onto the shell 10 and burning the shell 10.
[0045] It can be understood that, in this embodiment: the radial direction is implemented as α, such as Figure 2 As shown; the axial direction is implemented as β, such as Figure 2 shown.
[0046] See also Figures 2 to 7 In one embodiment, the insulating structure 40 includes a guiding slope (not shown), which is used for guiding the impact member 30 when it contacts the conductive member 50 .
[0047] With such arrangement, the guiding slope can shorten the time required for the impact member 30 to break the conductive member 50, thereby shortening the pre-arcing time.
[0048] Optionally, in the present embodiment, the guide bevel is implemented as a fan-shaped shape. In other embodiments of the present application, the guide bevel may also be implemented as a circle, a quadrilateral or a triangle, as long as the guide bevel can guide when the impact member 30 contacts the conductive member 50 .
[0049] Optionally, in the present embodiment, the guiding bevel is implemented as one, and in other embodiments of the present application, the guiding bevel may also be implemented as more than one, as long as the guiding bevel can guide when the impact member 30 contacts the conductive member 50 .
[0050] See also Figures 2 to 3 In one embodiment, the insulating structure 40 is elastic, and the insulating member 41 elastically seals against the inner wall of the housing 10 .
[0051] With such arrangement, the elastic insulating structure 40 can provide a buffer for the movement of the impact member 30 from the first end 11 to the second end 12, thereby preventing the impact member 30 from breaking through the housing 10; the insulating member 41 enables the insulating member 41 to be in two relatively isolated spaces on both sides in the axial direction.
[0052] Optionally, in the present embodiment, the insulating structure 40 is implemented to be elastic. In other embodiments of the present application, the insulating structure 40 may also be implemented to be rigid, as long as the insulating isolation member provides a buffering effect during the movement of the impact member 30 .
[0053] Optionally, in the present embodiment, the insulating member 41 is elastically sealed against the inner circumferential wall of the shell 10. In other embodiments of the present application, the insulating member 41 may also be implemented as not sealingly abutting against the inner circumferential wall of the shell 10, as long as the insulating member 41 can provide a buffer for the rapidly moving impact member 30.
[0054] See also Figures 2 to 3In one embodiment, the insulating structure 40 includes two insulating parts 41. When the impact member 30 breaks the conductive part 50, one of the insulating parts 41 is located at the first end of the conductive part 50, and the other insulating part 41 is located at the second end of the conductive part 50. A sealed first chamber 1 is formed between the two insulating parts 41, the impact member 30 and the shell 10.
[0055] With such arrangement, when the impact member 30 breaks the conductive member 50 , the first chamber can provide an arc extinguishing space for the disconnected conductive member 50 , so that the arc in the first chamber can fully contact the surrounding wall of the chamber, and the first chamber can avoid shortening the arc extinguishing time.
[0056] It can be understood that the first end of the conductive member 50 in the axial direction is close to the first end 11 of the housing 10 in the axial direction; and the second end of the conductive member 50 in the axial direction is close to the second end 12 of the housing 10 in the axial direction.
[0057] Optionally, in the present embodiment, after the impact member 30 breaks the conductive member 50, the two insulating members 41 are implemented on the different sides of the conductive member 50. In other embodiments of the present application, after the impact member 30 breaks the conductive member 50, the two insulating members 41 may also be implemented on the same side of the conductive member 50, as long as the arc extinguishing time can be shortened.
[0058] Optionally, in the present embodiment, the insulating structure 40 is implemented to include two insulating parts 41. In other embodiments of the present application, the insulating structure 40 may also be implemented to include one insulating part 41 or more than two insulating parts 41, as long as one insulating part 41 can form a first chamber with the shell 10 and the impact part 30 after the impact part 30 disconnects the conductive part 50.
[0059] Optionally, in the present embodiment, the insulating member 41 is implemented as a rubber member. In other embodiments of the present application, the insulating member 41 may also be implemented as a silicone member or a thermoplastic elastic member, as long as the insulating member 41 can form a first chamber with the shell 10 and the impact member 30 after the impact member 30 disconnects the conductive member 50.
[0060] It can be understood that, in the present embodiment, the insulating structure 40 is implemented to have the ability to adsorb metals, and in other embodiments of the present application, the insulating structure 40 may also be implemented to not have the ability to adsorb metals.
[0061] See also Figure 6 to Figure 7 In one embodiment, two mounting grooves 31 are provided on the impact member 30 , and the mounting grooves 31 are used to install the insulating member 41 . The axial distance between the two mounting grooves 31 is greater than the width of the conductive member 50 .
[0062] With such a configuration, the mounting groove 31 can prevent the insulating part 41 installed therein from axial displacement during the movement of the impact member 30, thereby preventing the insulating part 41 from obstructing the movement of the impact member 30 and shortening the pre-arcing time; when the impact member 30 disconnects the conductive part 50, the insulating part 41 installed in the mounting groove 31 can be axially away from the disconnected conductive part 50, thereby preventing the insulating part 41 from melting.
[0063] Optionally, in the present embodiment, two mounting grooves 31 are implemented, and in other embodiments of the present application, the mounting groove 31 may also be implemented as more than two or one, as long as the mounting groove 31 opened on the impact member 30 can provide sufficient accommodation space for the insulating member 41.
[0064] Optionally, in the present embodiment, the axial spacing between the two mounting grooves 31 is implemented to be greater than the width of the conductive member 50. In other embodiments of the present application, the axial spacing between the two mounting grooves 31 may also be implemented to be equal to or less than the width of the conductive member 50, as long as the arc extinguishing time can be shortened.
[0065] See also Figure 6 to Figure 7 In one embodiment, the mounting groove 31 is a straight groove or a dovetail groove.
[0066] Such a configuration facilitates the opening of the installation groove 31 , shortens the time required for opening the installation groove 31 , and reduces the processing cost of the installation groove 31 ; secondly, it facilitates the installation of the insulating member 41 , shortens the installation time of the insulating member 41 .
[0067] Optionally, in the present embodiment, the mounting groove 31 is implemented as a straight groove or a dovetail groove. In other embodiments of the present application, the mounting groove 31 may also be implemented as a T-shaped groove, as long as the mounting groove 31 can provide an installation space for the insulating member 41 .
[0068] See also Figure 6 to Figure 7 In one embodiment, the mounting groove 31 is an annular groove.
[0069] With such arrangement, the processing time of the annular installation groove 31 is shortened, the cost required for the installation groove 31 is reduced, the installation of the insulating member 41 is facilitated, and the installation time of the insulating member 41 is shortened.
[0070] Optionally, in the present embodiment, the mounting groove 31 is implemented as an annular groove. In other embodiments of the present application, the mounting groove 31 may also be implemented as an arc-shaped groove or a sentence-shaped groove, as long as sufficient installation space can be provided for the insulating member 41 .
[0071] See also Figures 2 to 7 In one embodiment, the insulating member 41 is an “O” shaped sealing ring.
[0072] This arrangement facilitates the purchase of the insulating member 41 and reduces the cost of a single insulating member 41 . Second, the “O”-shaped sealing ring is quick to install, shortening the installation time required for the insulating member 41 , thereby reducing the production cost of the insulating member 41 .
[0073] Optionally, in the present embodiment, the insulating member 41 is implemented as an “O”-shaped sealing ring. In other embodiments of the present application, the insulating member 41 may also be implemented as an arc, circle, triangle or quadrilateral, as long as the installation of the insulating member 41 is convenient.
[0074] In one embodiment, the housing 10 is filled with arc-extinguishing wire or quartz sand (not shown).
[0075] With such arrangement, when the impact member 30 moves from the first end 11 to the second end 12 , the arc-extinguishing wire or quartz sand filled in the housing 10 can provide a buffer for the fast-moving impact member 30 , thereby preventing the fast movement of the impact member 30 from breaking through the housing 10 .
[0076] Optionally, in the present embodiment, the shell 10 is implemented as being filled with arc-extinguishing wire or quartz sand. In other embodiments of the present application, the shell 10 may also be implemented as not being filled with arc-extinguishing wire or quartz sand, as long as the arc-extinguishing time can be shortened.
[0077] See also Figures 2 to 7 In one embodiment, the impact member 30 is integrally formed.
[0078] With such a configuration, the impact piece 30 can withstand a large initial force, and the integrally formed impact piece 30 has high stability, thereby improving the stability of the excitation type circuit breaker device 100 .
[0079] Optionally, in the present embodiment, the impact member 30 is implemented as an integral molding, and in other embodiments of the present application, the impact member 30 may also be implemented as a split molding, as long as the impact member 30 can quickly disconnect the conductive member 50 .
[0080] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0081] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.
Claims
1. An energized circuit breaker device for protecting a circuit, characterized in that: include: A shell, an excitation source, an impact piece, an insulating structure and a conductive piece, wherein the shell has a first end and a second end that are axially away from each other, the excitation source is mounted on the first end, the excitation source can act on the impact piece, the insulating structure is mounted on the impact piece, the insulating structure protrudes from the outer peripheral wall of the impact piece and contacts the inner peripheral wall of the shell, and the conductive piece radially penetrates the shell; The excitation source is started under preset conditions and provides initial power to the impact member, and the impact member moves axially from the first end to the second end and breaks the conductive member. During this period, the insulating structure can wipe the cross section of the conductive member.
2. The excitation type circuit breaker device according to claim 1, characterized in that: The insulating structure includes a guiding slope, and the guiding slope is used for guiding when the impact member contacts the conductive member.
3. The excitation type circuit breaker device according to claim 1, characterized in that: The insulating structure is elastic, and the insulating member is elastically sealed against the inner peripheral wall of the shell.
4. The excitation type circuit breaker device according to claim 3, characterized in that: The insulating structure includes two insulating parts. When the impact part breaks the conductive part, one of the insulating parts is located at the first end of the conductive part, and the other insulating part is located at the second end of the conductive part. A sealed first chamber is formed between the two insulating parts, the impact part and the shell.
5. The excitation type circuit breaker device according to claim 4, characterized in that: The impact member is provided with two mounting grooves for mounting the insulating member, and the axial distance between the two mounting grooves is greater than the width of the conductive member.
6. The excitation type circuit breaker device according to claim 5, characterized in that: The mounting groove is a straight groove or a dovetail groove.
7. The excitation type circuit breaker device according to claim 5, characterized in that: The mounting groove is an annular groove.
8. The excitation type circuit breaker device according to claim 7, characterized in that: The insulating member is an "O" shaped sealing ring.
9. The excitation type circuit breaker device according to claim 1, characterized in that: The shell is filled with arc-extinguishing metal wire or quartz sand.
10. The excitation type circuit breaker device according to claim 1, characterized in that: The impact piece is integrally formed.