Arc extinguish chamber
By forming a ridge and setting a recess at the upper end of the moving arc ignition plate, the air passage space is expanded, which solves the problem of insufficient air intake of the moving arc ignition plate and improves the ventilation efficiency and arc extinguishing effect of the arc extinguishing chamber.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2026-04-07
AI Technical Summary
The existing arc-extinguishing chamber has insufficient air intake at the moving arc-starting plate, which makes it difficult for the electric arc to effectively enter the grid plate assembly, thus affecting the arc-extinguishing efficiency.
A ridge is formed at the upper end of the moving arc-inducing plate, and recesses are set on both sides of it to expand the airway space, improve ventilation efficiency, and block the arc from overflowing by covering the gap of the first grid plate through the ridge.
It enhances the ventilation efficiency of the air passage, promotes the entry of the electric arc into the grid plate on the side of the moving arc ignition plate, improves the arc extinguishing effect, and prevents the electric arc from overflowing at the notch.
Smart Images
Figure CN224096678U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to switch technical field, concretely relates to an arc-extinguishing chamber. BACKGROUND
[0002] Switch as important distribution equipment, its access to power supply network, for protecting its subordinate load from the damage of fault current. But with the development of new energy, the use of switch is more and more, and the voltage requirement is also increasing. The existing switch is put forward new requirements.
[0003] Arc-extinguishing chamber as the arc-extinguishing function component of circuit breaker, for extinguishing arc, thereby cutting off current. The arc-extinguishing chamber includes array of louver, the outside of one end of array of louver is equipped with dynamic arc drawing sheet, one end of dynamic arc drawing sheet extends to arc-extinguishing chamber, and it is located at the periphery of the louver group, and it forms air passage with the louver group. The dynamic arc drawing sheet cooperates with the moving contact in the contact system of switch, when the contact system opens, the arc on the moving contact jumps to the dynamic arc drawing sheet, and is drawn by dynamic arc drawing sheet and enters the louver group.
[0004] In actual use, the louver corresponding to the dynamic arc drawing sheet has small air intake due to the influence of dynamic arc drawing sheet, thereby being not conducive to the arc on the side entering the louver. UTILITY MODEL CONTENTS
[0005] The utility model discloses a kind of arc-extinguishing chambers, the upper end of its dynamic arc drawing sheet forms a ridge beam part, recess is formed on the both sides of the ridge beam part, to expand the space of air passage at this place, improve the ventilation efficiency of air passage, to facilitate arc entering the louver on the side of dynamic arc drawing sheet.
[0006] The utility model aims at this to reach, a kind of arc-extinguishing chamber, including a pair of side plates, array in a pair of side plates between louver, the louver is multiple, it is arranged with interval each other, still include a dynamic arc drawing sheet, the upper end of the dynamic arc drawing sheet is located at the outside of the array direction of multiple louver, its lower end extends to arc-extinguishing chamber interior, air passage is constituted on the side of the dynamic arc drawing sheet close to the louver, the upper end of the dynamic arc drawing sheet forms a ridge beam part, recess is formed on the both sides of the ridge beam part respectively for improving the ventilation efficiency of air passage.
[0007] In a specific embodiment of the utility model, the dynamic arc drawing sheet includes first part, second part and third part, one end of the second part is connected with one end of the first part, and the other end of the second part is connected with one end of the third part, the included angle formed by the first part and the second part and the second part and the third part on the side close to the louver is obtuse angle.
[0008] In another specific embodiment of this utility model, the first part and the grid are arranged in parallel intervals, while the second and third parts are located on the outer side of the extension direction of the plurality of grids.
[0009] In another specific embodiment of this utility model, both the spine and the recess are located at the upper end of the first part.
[0010] In another specific embodiment of this utility model, the spine is flat-headed, the recess is an arc-shaped recess, and the two recesses are arranged symmetrically from left to right.
[0011] In another specific embodiment of this utility model, the grid plate includes a first grid plate and a second grid plate. In the array direction of the plurality of grid plates, the first grid plate is located on the side closer to the moving arc plate, while the second grid plate is located on the side of the first grid plate away from the moving arc plate.
[0012] In a further specific embodiment of this utility model, an anti-free radical component is installed above the grid plate, and the ventilation gap between the edge of the spine portion and the anti-free radical component is greater than the ventilation gap between the upper edge of the first grid plate and the anti-free radical component.
[0013] In a further specific embodiment of the present invention, the first grid plate has a notch, the ridge portion covers the middle of the notch, and the recess corresponds to the grid plate legs on both sides of the notch of the first grid plate.
[0014] In another specific embodiment of this utility model, a perforated plate is provided above the grid plate, the upper edge of the first grid plate is spaced apart from the perforated plate, and the upper edge of the second grid plate is abutting against the perforated plate.
[0015] In yet another specific embodiment of this utility model, a plurality of mounting protrusions are provided on both sides of the moving arc plate, the mounting protrusions being used to rivet or snap onto the side plate.
[0016] Due to the above-mentioned structure, this utility model has the following advantages: First, a ridge is formed at the upper end of the moving arc-inducing plate, and recesses are formed on both sides of the ridge, thereby expanding the space of the air passage and improving the ventilation efficiency of the air passage, thus facilitating the entry of the electric arc into the grid plate on one side of the moving arc-inducing plate; Second, the first part of the moving arc-inducing plate covers the entire gap of the first grid plate, which can prevent the electric arc from overflowing at the gap. Attached Figure Description
[0017] Figure 1 This is an exploded view of the switch described in this utility model;
[0018] Figure 2 This is an exploded view of the arc-extinguishing chamber described in this utility model;
[0019] Figure 3 This is a side view of the grid plate and the moving arc-guiding plate described in this utility model;
[0020] Figure 4 A schematic diagram of the front side of the grid plate and the moving arc-guiding plate of this utility model;
[0021] Figure 5 A schematic diagram of the front side of the grid sheet of this utility model;
[0022] Figure 6 This is a three-dimensional structural diagram of the movable arc-drawing plate described in this utility model.
[0023] In the figure: 1. Arc-extinguishing chamber, 11. Side plate, 12. Grid plate, 121. First grid plate, 122. Second grid plate, 13. Gas generating component, 14. Deionization component, 141. Support, 142. Orifice plate, 143. Flame extinguishing plate support, 144. Filter assembly, 145. Sealing gasket, 15. Arc extinguishing cover, 16. Pin assembly; 2. Contact system, 21. Moving contact, 22. Stationary contact; 3. Shell, 31. Base, 32. Bottom plate; 100. Moving arc-inducing plate, 101. Ridge section, 1011. Ridge section edge, 102. Recess, 103. First part, 104. Second part, 105. Third part; 200. Notch. Detailed Implementation
[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any formal but not substantive changes made based on the concept of this utility model should be considered within the protection scope of this utility model.
[0025] In the following description, all directional (or orientational) concepts involving up, down, left, right, front, and back refer to the positional state of the corresponding figures, and are intended to facilitate public understanding. Therefore, they should not be construed as a special limitation on the technical solution provided by this utility model.
[0026] like Figure 1 The switch includes a disconnector and a circuit breaker. The switch comprises an arc-extinguishing chamber 1, a contact system 2, and a housing 3. The housing 3 includes a base 31 and a bottom plate 32, which are joined together to form the housing 3. Typically, the base 31 and the bottom plate 32 are fastened together using threads.
[0027] The contact system 2 includes a moving contact 21 and a stationary contact 22. The moving contact 21 is mounted on the base 31, while the stationary contact 22 is mounted on the base plate 32. Specifically, the moving contact 21 is rotatably mounted, while the stationary contact 22 is fixedly mounted. After the moving contact 21 is activated, it makes contact with or separates from the stationary contact 22.
[0028] like Figure 2 This is a schematic diagram of the arc-extinguishing chamber 1. The arc-extinguishing chamber 1 includes a pair of side plates 11 and grid plates 12 disposed between the pair of side plates 11. A gas-generating component 13 is provided on the air inlet side of the arrayed grid plates 12. There is a pair of gas-generating components 13, each covering one of the two grid plate legs of the grid plate 12. A deionization assembly 14 is installed above the grid plate 12, and an arc-extinguishing cover 15 is installed above the deionization assembly 14. That is, the deionization assembly 14 is located on the air outlet side of the grid plate 12, and the arc-extinguishing cover 15 is located above the deionization assembly 14. The gas-generating component 13 is fixed to the grid plate leg of the grid plate 12 by a pin assembly 16, and the gas-generating component 13 is also riveted to its corresponding side plate 11.
[0029] See you later Figure 2 The flame extinguishing component 14 includes a support 141, which is hollow to form a receiving cavity. Inside the receiving cavity are a perforated plate 142, a flame extinguishing disc support 143, a filter assembly 144, and a sealing gasket 145. The perforated plate 142 is located at the bottom, i.e., it is located on the outlet side of the grid plate 12. The flame extinguishing disc support 143 is located above the perforated plate 142, and the filter assembly 144 is located above the flame extinguishing disc support 143. Specifically, the perforated plate 142, the flame extinguishing disc support 143, and the filter assembly 144 are all located inside the support 141 and are stacked on top of each other. The sealing gasket 145 covers the opening of the support 141, and the arc-extinguishing cover 15 covers the sealing gasket 145, i.e., the arc-extinguishing cover 15 and the support 141 clamp the sealing gasket 145. The sealing gasket 145 can seal the installation gap around the bracket 141 and the arc-extinguishing cover 15, thereby improving the airtightness of the assembly between the arc-extinguishing cover 15 and the bracket 141.
[0030] The bracket 141 is fixed to a pair of side plates 11, for example, by a snap-fit method. The bracket 141 is fixed to the arc-extinguishing cover 15 by screws, thereby integrating the orifice plate 142, the flame extinguishing disc bracket 143, the filter assembly 144, and the sealing gasket 145 into a single unit.
[0031] like Figure 3This is a side view of the arc-extinguishing chamber 1. The figure includes two directions: the first direction is the array direction of the grid plates 12, and the second direction is the height direction of the arc-extinguishing chamber, which can also be considered the extension direction of the grid plates 12. For the grid plates 12, the upper end in the second direction is the air outlet, and the lower end is the air inlet. Multiple grid plates 12 are arranged in an array spaced apart from each other in the first direction. On one side of the array of grid plates 12 corresponding to the moving contact 21 of the contact system, there is a moving arc-inducing plate 100. The upper end of the moving arc-inducing plate 100 is located outside the array of grid plates 12 along the first direction, and its lower end extends into the arc-extinguishing chamber. The moving arc-inducing plate 100 is located on the periphery of the array of grid plates 12. An air passage or arc channel is formed on the side of the moving arc-inducing plate 100 near the grid plates 12. Figure 3 The curved line in the middle illustrates the air passage. The side of the electric arc near the moving arc igniter 100 is pulled along the air passage by the moving arc igniter 100 and enters the grid plate 12 of the array near the moving arc igniter 100.
[0032] like Figure 4 , Figure 5 and Figure 6 The movable arc-guiding plate 100 includes a first part 103, a second part 104, and a third part 105, which are connected. Specifically, one end of the second part 104 is connected to one end of the first part 103, and the other end of the second part 104 is connected to one end of the third part 105. All three parts are integrally formed. The included angles formed by the first part 103 and the second part 104, and by the second part 104 and the third part 105 on the side closest to the grid plate 12, are all obtuse angles. Specifically, the first part 103 is parallel to and spaced apart from the grid plate 12, while the second part 104 and the third part 105 are located on the outer side of the extending direction of the grid plate 12. Figure 3 In this configuration, the second part 104 and the third part 105 are located below the grid plate 12.
[0033] The technical innovation of this utility model lies in the fact that a ridge portion 101 is formed at the upper end of the moving arc plate 100. Specifically, the ridge portion 101 is located at the upper end of the first part 103, corresponding to the air outlet end of the grid plate 12, or it can be considered that the first part 103 has a ridge portion 101 at the end away from the second part 104. Recesses 102 are formed on both sides of the ridge portion 101. That is, both the ridge portion 101 and the recesses 102 are located at the upper end of the first part 103. The ridge portion 101 and the two recesses 102 on both sides make this end of the first part 103 form a mountain peak shape. Preferably, the ridge portion 101 is flat-topped; more preferably, the recesses 102 are arc-shaped recesses, and the two recesses 102 are arranged symmetrically from left to right. This shape arrangement allows the upper end of the moving arc-inducing plate 100, specifically the upper end of the first part 103, to have a recess 102, which expands the space of the air passage, thereby improving the ventilation efficiency of the air passage and facilitating the entry of the electric arc into the grid plate 12 on one side of the moving arc-inducing plate 100.
[0034] See also Figure 3 Combination Figure 4 In the array direction of the grid plates 12, the array of grid plates 12 includes a first grid plate 121 and a second grid plate 122. The first grid plate 121 is located on the side closer to the moving arc plate 100, while the second grid plate 122 is located on the side of the first grid plate 121 away from the moving arc plate 100. The upper edge of the first grid plate 121 is lower than the upper edge of the second grid plate 122, that is, the edge of the first grid plate 121 on the air outlet side in the second direction is lower than the edge of the second grid plate 122 on the air outlet side in the second direction. The spine edge 1011 of the spine portion 101 is lower than the upper edge of the first grid plate 121. Thus, the spine edge 1011, the upper edge of the first grid plate 121, and the upper edge of a second grid plate 122 adjacent to the first grid plate 121 form a stepped arrangement. Therefore, the ventilation gap between the spine edge 1011 and the deionization component 14 is larger than the ventilation gap between the upper edge of the first grid plate 121 and the deionization component 14. This arrangement can increase the width of the air passage near the moving arc ignition plate 100, thereby improving the ventilation efficiency of the air passage and facilitating the entry of the electric arc into the grid plate 12 on the side of the moving arc ignition plate 100.
[0035] In this embodiment, preferably, there is only one first grid plate 121.
[0036] See also Figure 2 , Figure 5Since all the grid plates 12 have notches 200, specifically, the first grid plate 121 and the second grid plate 122 also have notches 200, and in the first direction, i.e., in the array direction of the multiple grid plates 12, the ridge portion 101 covers the middle part of the notch 200. Of course, the above-mentioned covering refers to the projection relationship in the first direction. The ridge portion 101, along with the first part 103, is also spaced apart from the first grid plate 121. In the first direction, the recess 102 corresponds to the grid plate legs on both sides of the notch 200 of the first grid plate 121. The correspondence between the recess 102 and the grid plate legs is also in the projection relationship in the first direction. Thus, as far as the entire first part 103 is concerned, in the projection relationship direction in the first direction, it covers the entire notch 200 of the first grid plate 121. This arrangement can prevent the arc from overflowing at the notch 200.
[0037] like Figure 3 More specifically, a support 141 is provided above the grid plate 12, and a perforated plate 142 is provided inside the support 141. It can also be understood that a perforated plate 142 is provided above the grid plate 12, the upper edge of the first grid plate 121 is spaced apart from the perforated plate 142, and the upper edge of the second grid plate 122 is abutting against the perforated plate 142.
[0038] like Figure 6 Multiple mounting protrusions are provided on both sides of the movable arc-guiding plate 100, which are used for riveting or snapping with the side plate 11. Preferably, the mounting protrusions are only located on both sides of the first part 103 and the second part 104.
Claims
1. An arc-extinguishing chamber, comprising a pair of side plates (11), an array of grid plates (12) between the pair of side plates (11), wherein there are multiple grid plates (12) spaced apart from each other, and a movable arc-inducing plate (100), wherein the upper end of the movable arc-inducing plate (100) is located outside the array direction of the multiple grid plates (12), and its lower end extends into the arc-extinguishing chamber, and an air passage is formed on the side of the movable arc-inducing plate (100) near the grid plates (12), characterized in that: The upper end of the movable arc plate (100) is formed with a spine (101), and on both sides of the spine (101) are recesses (102) for improving the ventilation efficiency of the airway.
2. The arc-extinguishing chamber according to claim 1, characterized in that: The moving arc plate (100) includes a first part (103), a second part (104) and a third part (105). One end of the second part (104) is connected to one end of the first part (103), and the other end of the second part (104) is connected to one end of the third part (105). The included angles formed by the first part (103) and the second part (104) and the second part (104) and the third part (105) on the side near the grid plate (12) are all obtuse angles.
3. The arc-extinguishing chamber according to claim 2, characterized in that: The first part (103) is arranged parallel to the grid plate (12), while the second part (104) and the third part (105) are located on the outside of the extension direction of the plurality of grid plates (12).
4. An arc-extinguishing chamber according to claim 2, characterized in that: The spine (101) and the recess (102) are both located at the upper end of the first part (103).
5. An arc-extinguishing chamber according to claim 4, characterized in that: The spine (101) is flat-topped, and the recess (102) is an arc-shaped recess, with the two recesses (102) arranged symmetrically on the left and right.
6. An arc-extinguishing chamber according to claim 1, characterized in that: The grating (12) includes a first grating (121) and a second grating (122). In the array direction of the plurality of gratings (12), the first grating (121) is close to the side of the moving arc plate (100), while the second grating (122) is located on the side of the first grating (121) away from the moving arc plate (100).
7. An arc-extinguishing chamber according to claim 6, characterized in that: An anti-free radical assembly (14) is installed above the grid plate (12), and the ventilation gap between the spine edge (1011) of the spine portion (101) and the anti-free radical assembly (14) is greater than the ventilation gap between the upper edge of the first grid plate (121) and the anti-free radical assembly (14).
8. An arc-extinguishing chamber according to claim 6, characterized in that: The first grid plate (121) has a notch (200), the spine (101) covers the middle of the notch (200), and the recess (102) corresponds to the grid plate legs on both sides of the notch (200) of the first grid plate (121).
9. An arc-extinguishing chamber according to claim 6, characterized in that: The grid plate (12) is provided with a perforated plate (142) above it. The upper edge of the first grid plate (121) is spaced apart from the perforated plate (142), while the upper edge of the second grid plate (122) is abutted against the perforated plate (142).
10. An arc-extinguishing chamber according to claim 1, characterized in that: Multiple mounting protrusions are provided on both sides of the moving arc-guiding plate (100), which are used to rivet or snap onto the side plate (11).