A mounting structure of an arc extinguishing chamber of a frame circuit breaker and a frame circuit breaker

Abstract

The utility model relates to a low voltage electric appliance technical field especially, and is concerned with a frame circuit breaker arc chamber's mounting structure and frame circuit breaker. The frame circuit breaker arc chamber's mounting structure provided by the utility model includes: phase-to-phase arc blocking compression spare and end compression block, phase-to-phase arc blocking compression spare includes phase-to-phase compression block and the phase-to-phase arc blocking board of setting in the top of phase-to-phase compression block, phase-to-phase compression block is used for synchronous compression adjacent arc chamber, and the phase-to-phase arc blocking board is used for shielding the metal spare on arc chamber casing and / or provides compression force to the side wall opposite to adjacent arc chamber casing, and end compression block is used for compression end arc chamber. The limiting rib of adjacent arc chamber can be synchronous compression on the base plate through phase-to-phase compression block, and the limiting rib of end arc chamber can be compressed base plate through end compression block, makes arc chamber installation more convenient, and the metal spare on arc chamber casing can be shielded through phase-to-phase arc blocking board, and phase-to-phase breakdown can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to an installation structure for the arc-extinguishing chamber of a frame circuit breaker and the frame circuit breaker itself. Background Technology

[0002] Currently, circuit breakers have a base plate and several arc-extinguishing chambers corresponding to multiple arc-extinguishing chamber shells set in the base plate. Limiting ribs extending out of the arc-extinguishing chamber shell are provided on both sides of the arc-extinguishing chamber. The existing arc-extinguishing chamber installation structure includes a fixing block. The limiting ribs are equipped with fixing blocks, which are connected to the base plate. The arc-extinguishing chamber is fixed to the base plate by the cooperation of the fixing blocks and the limiting ribs. Although the installation of the arc-extinguishing chamber is more convenient by the cooperation of the fixing blocks and the limiting ribs, the fasteners on the arc-extinguishing chamber shell may cause phase-to-phase breakdown risk during the circuit breaker's breaking process due to the voltage on them. Utility Model Content

[0003] The purpose of this utility model is to provide an installation structure for the arc-extinguishing chamber of a frame circuit breaker and a frame circuit breaker, so as to solve the technical problem that the fasteners on the arc-extinguishing chamber may cause phase-to-phase breakdown due to voltage during the breaking process in the existing arc-extinguishing chamber installation structure.

[0004] In a first aspect, this utility model provides an installation structure for the arc-extinguishing chamber of a frame circuit breaker, comprising: an interphase arc-blocking clamping member and an end clamping block;

[0005] The interphase arc-blocking clamping component includes interphase clamping blocks and interphase arc-blocking plates disposed on the top of the interphase clamping blocks;

[0006] The interphase clamping blocks are used to synchronously clamp adjacent arc-extinguishing chambers, the interphase arc-blocking plates are used to shield the metal parts on the arc-extinguishing chamber shells and / or provide clamping force to the opposite side walls of adjacent arc-extinguishing chamber shells, and the end clamping blocks are used to clamp the end arc-extinguishing chambers.

[0007] In an optional embodiment, the alternating arc-blocking plate includes a planar portion and two planar portions;

[0008] The first flat portion is used to fit against the side wall of one of the adjacent arc-extinguishing chamber shells, and the second flat portion is used to fit against the side wall of the other adjacent arc-extinguishing chamber shell.

[0009] In an optional embodiment, the first planar portion and the second planar portion are respectively located on both sides of the alternating pressing block, and the first planar portion is located on both sides of the second planar portion, and the first planar portion and the second planar portion are in a convex shape.

[0010] In an optional embodiment, the first planar portion and the second planar portion are located on both sides of the alternating pressing block, and the first planar portion is located on one side of the second planar portion, and the first planar portion and the second planar portion are in the shape of a U.

[0011] In an optional embodiment, when the interphase pressing blocks simultaneously press against adjacent arc-extinguishing chambers, the top of the interphase arc-blocking plate is higher than the top of the arc-extinguishing chamber shell;

[0012] Alternatively, when the interphase pressing blocks simultaneously press against adjacent arc-extinguishing chambers, the top of the interphase arc-blocking plate is equal to the top of the arc-extinguishing chamber shell;

[0013] Alternatively, when the interphase pressing blocks simultaneously press against adjacent arc-extinguishing chambers, the top of the interphase arc-blocking plate is lower than the top of the arc-extinguishing chamber shell.

[0014] In an optional embodiment, the interphase clamping blocks and the end clamping blocks are provided with locking holes for the locking element to pass through and lock onto the base plate.

[0015] In an optional embodiment, the interphase arc-blocking clamping member is made of plastic insulating material.

[0016] In an optional embodiment, the bottom of the end clamping block and the bottom of the alternating clamping blocks are both provided with connecting grooves that cooperate with the limiting ribs of the arc extinguishing chamber.

[0017] In an optional embodiment, an insert nut is provided on the base plate, and the locking member is connected to the insert nut through the locking hole.

[0018] Secondly, this utility model provides a frame circuit breaker, including the installation structure of the arc-extinguishing chamber of the frame circuit breaker as described in any of the foregoing embodiments.

[0019] Compared with the prior art, the installation structure of the arc-extinguishing chamber of the frame circuit breaker provided by this utility model and the technical advantages of the frame circuit breaker are as follows:

[0020] The installation structure of the arc-extinguishing chamber of the frame circuit breaker provided by this utility model includes: an interphase arc-blocking clamping component and an end clamping block; the interphase arc-blocking clamping component includes an interphase clamping block and an interphase arc-blocking plate disposed on the top of the interphase clamping block; the interphase clamping block is used to synchronously clamp adjacent arc-extinguishing chambers, the interphase arc-blocking plate is used to shield the metal parts on the arc-extinguishing chamber shell and / or provide clamping force to the opposite side walls of the adjacent arc-extinguishing chamber shells, and the end clamping block is used to clamp the end arc-extinguishing chamber.

[0021] The interphase clamping blocks can simultaneously press the limiting ribs of adjacent arc-extinguishing chambers onto the base plate, and the end clamping blocks can press the limiting ribs of the end arc-extinguishing chambers onto the base plate, making the installation of the arc-extinguishing chambers more convenient. At the same time, since the top of the interphase clamping blocks has an interphase arc-blocking plate, the metal parts on the arc-extinguishing chamber shell can be blocked, which can effectively prevent interphase breakdown.

[0022] The frame circuit breaker provided by this utility model includes the installation structure of the arc-extinguishing chamber of the frame circuit breaker. Therefore, the technical advantages and effects achieved by it include the technical advantages and effects achieved by the installation structure of the arc-extinguishing chamber of the frame circuit breaker, which will not be described in detail here.

[0023] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the frame circuit breaker structure provided in this embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the installation structure of the arc-extinguishing chamber of the frame circuit breaker provided for an embodiment of this utility model;

[0027] Figure 3 A schematic diagram of an alternating arc-blocking clamping component provided for an embodiment of this utility model;

[0028] Figure 4 A schematic diagram of another phase-to-phase arc-blocking clamping component provided in this embodiment of the present utility model;

[0029] Figure 5 A schematic diagram of an insert nut structure provided on a base by means of slotting, according to an embodiment of this utility model;

[0030] Figure 6 This is a schematic diagram of the insert nut structure provided in an embodiment of the present utility model.

[0031] Icons: 1-Alternating arc-blocking clamping component; 2-End clamping block; 3-Alternating clamping block; 4-Alternating arc-blocking plate; 5-Arch-extinguishing chamber shell; 6-Flat part one; 7-Flat part two; 8-Locking hole; 9-Base plate; 10-Connecting groove; 11-Insert nut; 12-Rivet; 13-Material-stealing groove. Detailed Implementation

[0032] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0037] The specific structure is as follows: Figures 1 to 6 As shown.

[0038] This embodiment provides an installation structure for the arc-extinguishing chamber of a frame circuit breaker, including: an interphase arc-blocking clamping member 1 and an end clamping block 2; the interphase arc-blocking clamping member 1 includes an interphase clamping block 3 and an interphase arc-blocking plate 4 disposed on the top of the interphase clamping block 3; the interphase clamping block 3 is used to synchronously clamp adjacent arc-extinguishing chambers, the interphase arc-blocking plate 4 is used to shield the metal parts on the arc-extinguishing chamber shell 5 and / or provide clamping force to the opposite side walls of the adjacent arc-extinguishing chamber shell 5, and the end clamping block 2 is used to clamp the end arc-extinguishing chamber.

[0039] In this embodiment, the frame circuit breaker has a base plate 9 and several arc-extinguishing grids correspondingly disposed in multiple arc-extinguishing chamber shells 5 on the base plate 9. Limiting ribs extending out of the arc-extinguishing chamber shell 5 are respectively provided on both sides of the arc-extinguishing chamber. The limiting ribs of adjacent arc-extinguishing chambers can be synchronously pressed onto the base plate 9 by the interphase pressing block 3, and the limiting ribs of the end arc-extinguishing chambers can be pressed onto the base plate 9 by the end pressing block 2, making the installation of the arc-extinguishing chambers more convenient. At the same time, since the top of the interphase pressing block 3 has an interphase arc-blocking plate 4, the metal parts on the arc-extinguishing chamber shell 5 can be blocked by the interphase arc-blocking plate 4, which can effectively prevent interphase breakdown.

[0040] In the optional technical solution of this embodiment, the interphase arc-blocking plate 4 includes a flat part 6 and a flat part 7; the flat part 6 is used to fit against the side wall of one of the adjacent arc-extinguishing chamber shells 5, and the flat part 7 is used to fit against the side wall of the other adjacent arc-extinguishing chamber shell 5.

[0041] In this embodiment, the interphase arc-blocking plate 4 not only covers the metal parts on the arc-extinguishing chamber shell 5, preventing the exposed metal parts from causing interphase puncture between the opposite sidewalls of adjacent arc-extinguishing chamber shells 5, but also provides a clamping force to the opposite sidewalls of adjacent arc-extinguishing chamber shells 5, through the flat part 6 and the flat part 7 respectively, so that the upper half of the arc-extinguishing chamber shell 5 above the base plate 9 is tightly fitted.

[0042] like Figure 3 As shown, in the optional technical solution of this embodiment, the first flat part 6 and the second flat part 7 are respectively located on both sides of the alternating pressing block 3, and the first flat part 6 is located on both sides of the second flat part 7. The first flat part 6 and the second flat part 7 are convex in shape, and the overall structure is simple and easy to manufacture.

[0043] like Figure 4 As shown, in the optional technical solution of this embodiment, the first flat part 6 and the second flat part 7 are located on both sides of the alternating pressing block 3, the first flat part 6 is located on one side of the second flat part 7, the first flat part 6 and the second flat part 7 are U-shaped, the overall structure is simple and easy to manufacture.

[0044] This embodiment is not limited to this. The alternating arc-blocking plate 4 can be any form of structure. For example, the alternating arc-blocking plate 4 has multiple planar parts 6 and multiple planar parts 7. The planar parts 6 and planar parts 7 are serrated, as long as the requirements are met.

[0045] In the optional technical solution of this embodiment, when the interphase clamping blocks 3 simultaneously clamp adjacent arc-extinguishing chambers, the top of the interphase baffle plate 4 is higher than the top of the arc-extinguishing chamber shell 5. Since the top of the base plate 9 is equipped with a top cover (not shown in the figure), and the arc-extinguishing chamber shell 5 is inside the top cover, during the breaking process, because the top of the interphase baffle plate 4 is higher than the top of the arc-extinguishing chamber shell 5, it can play a role in blocking the arc and preventing the adjacent arc-extinguishing chamber shell 5 inside the top cover from being punctured by high-heat gas from the top.

[0046] Furthermore, such as Figure 1 As shown, the upper part of the arc-extinguishing chamber has multiple exhaust ports. The top of the arc-extinguishing chamber shell 5 is higher than the exhaust ports of the arc-extinguishing chamber, which can play a role in blocking arc flash and preventing the shells of adjacent arc-extinguishing chambers 5 inside the top cover from being punctured by high-heat gas from the top. At the same time, the top of the interphase arc-blocking plate 4 is higher than the top of the arc-extinguishing chamber shell 5, which can enhance the role of blocking arc flash.

[0047] However, this embodiment is not limited to this. Alternatively, when the interphase pressing blocks 3 simultaneously press against adjacent arc-extinguishing chambers, the top of the interphase baffle plate 4 is equal to the top of the arc-extinguishing chamber shell 5. In this case, the interphase baffle plate 4 can also shield the metal parts on the arc-extinguishing chamber shell 5, effectively preventing interphase breakdown. Alternatively, when the interphase pressing blocks 3 simultaneously press against adjacent arc-extinguishing chambers, the top of the interphase baffle plate 4 is lower than the top of the arc-extinguishing chamber shell 5. In this case, the interphase baffle plate 4 can also shield the metal parts on the arc-extinguishing chamber shell 5, effectively preventing interphase breakdown.

[0048] In the optional technical solution of this embodiment, the interphase pressing block 3 and the end pressing block 2 are provided with locking holes 8, which are used for the locking member to pass through and lock onto the base plate 9.

[0049] In this embodiment, both the interphase pressing block 3 and the end pressing block 2 are provided with locking holes 8. The locking member passes through the locking hole 8 and locks them onto the base plate 9. The structure is simple and easy to disassemble and assemble, so as to fix the interphase pressing block 3 and the end pressing block 2 onto the base plate 9.

[0050] In the optional technical solution of this embodiment, the interphase arc-blocking clamping member 1 is made of plastic insulating material. It is easy to manufacture and has a low cost, while the plastic material has good insulation performance.

[0051] It should be noted that the interphase arc-blocking clamping member 1 in this embodiment is made of insulating material.

[0052] Furthermore, an insert nut 11 is provided on the base plate 9. The insert nut 11 can be pre-embedded in the base plate 9, which includes a rear base plate and a front base. Alternatively, as shown... Figure 5 Grooves are cut into the base and bottom plate of the base plate 9. Figure 5 (The base plate is hidden). When installing the interphase clamping block 3 and the end clamping block 2, insert nuts 11 are inserted into the groove. Both the interphase clamping block 3 and the end clamping block 2 are provided with locking holes 8. Locking elements, such as bolts, are used to lock the interphase clamping block 3 and the end clamping block 2 onto the base plate 9 by passing through the locking holes 8 and cooperating with the insert nuts 11.

[0053] In the optional technical solution of this embodiment, the bottom of the end clamping block 2 and the bottom of the interphase clamping block 3 are both provided with connecting grooves 10 that cooperate with the limiting ribs of the arc extinguishing chamber.

[0054] In this embodiment, the bottom surfaces of both the end clamping block 2 and the interphase clamping block 3 are provided with connecting grooves 10 that are adapted to the limiting ribs. After the end clamping block 2 and the interphase clamping block 3 are clamped, the limiting ribs are located in the connecting grooves 10, preventing displacement and ensuring the stability of the installation. Furthermore, the movement of the arc-extinguishing chamber in the front-to-back direction is restricted by the base plate 9, while the degrees of freedom in other directions are completely restricted by the end clamping block 2 and the interphase clamping block 3. Under the high-pressure impact force generated by the interruption of high voltage and short-circuit current, it is reliably ensured that the arc-extinguishing chamber shell 5 will not be blown open by the high pressure.

[0055] In this embodiment, the top wall thickness of the arc-extinguishing chamber shell 5 is relatively thin, while the middle wall thickness is relatively thick. Therefore, a material-stealing groove 13 is provided at the transition between the middle and the top to facilitate the molding of the arc-extinguishing chamber shell 5.

[0056] This embodiment provides a frame circuit breaker, including the mounting structure of the arc-extinguishing chamber of the frame circuit breaker described above. Therefore, the technical advantages and effects achieved by the frame circuit breaker include the technical advantages and effects achieved by the mounting structure of the arc-extinguishing chamber of the frame circuit breaker described above, which will not be repeated here.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An installation structure for the arc-extinguishing chamber of a frame circuit breaker, characterized in that, include: Alternating arc-blocking clamping parts (1) and end clamping blocks (2); The interphase arc-blocking clamping component (1) includes an interphase clamping block (3) and an interphase arc-blocking plate (4) disposed on the top of the interphase clamping block (3); The interphase pressing block (3) is used to synchronously press adjacent arc-extinguishing chambers, the interphase arc-blocking plate (4) is used to shield the metal parts on the arc-extinguishing chamber shell (5) and / or provide pressing force to the opposite side walls of the adjacent arc-extinguishing chamber shell (5), and the end pressing block (2) is used to press the end arc-extinguishing chamber.

2. The installation structure of the arc-extinguishing chamber of the frame circuit breaker according to claim 1, characterized in that, The alternating arc-blocking plate (4) includes a planar portion one (6) and a planar portion two (7); The first flat portion (6) is used to fit against the side wall of one of the adjacent arc-extinguishing chamber housings (5), and the second flat portion (7) is used to fit against the side wall of the other adjacent arc-extinguishing chamber housing (5).

3. The installation structure of the arc-extinguishing chamber of the frame circuit breaker according to claim 2, characterized in that, The first flat part (6) and the second flat part (7) are located on both sides of the alternating pressing block (3), and the first flat part (6) is located on both sides of the second flat part (7). The first flat part (6) and the second flat part (7) are convex in shape.

4. The installation structure of the arc-extinguishing chamber of the frame circuit breaker according to claim 2, characterized in that, The first flat part (6) and the second flat part (7) are located on both sides of the alternating pressing block (3), and the first flat part (6) is located on one side of the second flat part (7). The first flat part (6) and the second flat part (7) are in the shape of a U.

5. The installation structure of the arc-extinguishing chamber of the frame circuit breaker according to any one of claims 1-4, characterized in that, When the interphase pressing blocks (3) press the adjacent arc-extinguishing chambers simultaneously, the top of the interphase arc-blocking plate (4) is higher than the top of the arc-extinguishing chamber shell (5); Alternatively, when the interphase pressing blocks (3) simultaneously press the adjacent arc-extinguishing chambers, the top of the interphase arc-blocking plate (4) is equal to the top of the arc-extinguishing chamber shell (5); Alternatively, when the interphase pressing blocks (3) simultaneously press the adjacent arc-extinguishing chambers, the top of the interphase arc-blocking plate (4) is lower than the top of the arc-extinguishing chamber shell (5).

6. The installation structure of the arc-extinguishing chamber of the frame circuit breaker according to any one of claims 1-4, characterized in that, The interphase clamping block (3) and the end clamping block (2) are provided with locking holes (8), which are used for the locking member to pass through and lock onto the base plate (9).

7. The installation structure of the arc-extinguishing chamber of the frame circuit breaker according to any one of claims 1-4, characterized in that, The interphase arc-blocking clamping component (1) is made of plastic insulating material.

8. The installation structure of the arc-extinguishing chamber of the frame circuit breaker according to any one of claims 1-4, characterized in that, The bottom of the end clamping block (2) and the bottom of the interphase clamping block (3) are both provided with connecting grooves (10) that cooperate with the limiting ribs of the arc extinguishing chamber.

9. The installation structure of the arc-extinguishing chamber of the frame circuit breaker according to claim 6, characterized in that, An insert nut (11) is provided on the base plate (9), and the locking member passes through the locking hole (8) and is connected to the insert nut (11).

10. A frame circuit breaker, characterized in that, The installation structure includes the arc-extinguishing chamber of the frame circuit breaker as described in any one of claims 1-9.

Images