CN110233074B - Arc extinguishing device for portable single-phase air bypass switch - Google Patents
Arc extinguishing device for portable single-phase air bypass switch Download PDFInfo
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- CN110233074B CN110233074B CN201810180067.6A CN201810180067A CN110233074B CN 110233074 B CN110233074 B CN 110233074B CN 201810180067 A CN201810180067 A CN 201810180067A CN 110233074 B CN110233074 B CN 110233074B
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- air
- small shaft
- arc extinguishing
- bypass switch
- moving contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
Abstract
An arc extinguishing device for a portable single-phase air bypass switch, comprising an aluminum sleeve and, disposed within the aluminum sleeve: the device comprises a fixed contact (4), a moving contact (5) positioned above the fixed contact (4), a small shaft (1) positioned below the moving contact (5) and connected with the moving contact (5), and a first elastic part (2) arranged at the bottom end of the small shaft (1), wherein an exhaust ring (3) is arranged on the small shaft (1); when the switch is switched on, the moving contact (5) is meshed with the fixed contact (4), the first elastic part (2) is compressed, and the fixed contact (4), the moving contact (5), the small shaft (1), the aluminum sleeve and the exhaust ring (3) jointly enclose to form an air storage area; when the switch is switched off, the moving contact (5) is separated from the static contact (4), the first elastic part (2) pushes the small shaft (1) to move upwards, and therefore the exhaust ring (3) is driven to move upwards to compress air in the air storage area and discharge the air upwards through the air hole of the static contact (4) to achieve air current arc extinction.
Description
Technical Field
The invention relates to the field of power grids, in particular to an arc extinguishing device for a portable single-phase air bypass switch.
Background
The portable single-phase air bypass switch designed at present only depends on air to extinguish arc when a circuit is overhauled, and the principle is that when no-load cables are disconnected in hot-line work, because the capacitance of a line changes rapidly, if an air gap is kept, the voltage is increased, and when the voltage exceeds the ionization voltage of the air gap, the air is ionized, so that the air is changed into ions, and electric arcs are generated. Therefore, the single-phase switch is closed quickly, the resistance at the interface is close to zero, and electric arcs cannot be generated. The single-phase switch divides absolutely fast, kneck resistance grow rapidly, and voltage rising, electric arc produce, but because the quick grow of air insulation distance between the contact, line voltage can't puncture air insulation between the contact this moment, and electric arc extinguishes, and this although can realize the arc extinguishing, the arc extinguishing effect is not good enough, and the reliability is not high, and the security is also not enough.
Disclosure of Invention
The present invention is directed to an arc extinguishing device for a portable single-phase air bypass switch, which overcomes the above-mentioned drawbacks of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: an arc quenching apparatus for a portable single-phase air bypass switch is constructed comprising an aluminum sleeve and, disposed within the aluminum sleeve: the air-purifying device comprises a fixed contact, a movable contact positioned above the fixed contact, a small shaft positioned below the movable contact and connected with the movable contact, and a first elastic element arranged at the bottom end of the small shaft, wherein an exhaust ring is arranged on the small shaft;
when the switch is switched on, the moving contact is meshed with the fixed contact, the first elastic element is compressed, and the fixed contact, the moving contact, the small shaft, the aluminum sleeve and the exhaust ring jointly enclose to form an air storage area; when the switch is switched off, the moving contact is separated from the static contact, the first elastic piece pushes the small shaft to move upwards, and therefore the exhaust ring is driven to move upwards to compress air in the air storage area and discharge the air upwards through the air hole of the static contact, and air current arc extinction is achieved.
In the arc extinguishing device for the portable single-phase air bypass switch, when the switch is opened, the moving contact, the small shaft, the aluminum sleeve and the exhaust ring are enclosed together to form an air compression area, air in the air storage area is compressed to the air compression area and is upwards exhausted through the air hole of the static contact, and an air flow adjusting device for adjusting the air flow is arranged on the air flow path of the air compression area.
In the arc extinguishing device for the portable single-phase air bypass switch, the air flow adjusting device is vertically arranged on the wall of the aluminum sleeve, the aluminum sleeve is provided with an installation channel for installing the air flow adjusting device in a penetrating manner along the wall thickness direction of the aluminum sleeve, the air flow adjusting device comprises a plate-shaped body, the upper surface and/or the lower surface of the plate-shaped body is provided with a blind hole, a positioning piece and a second elastic piece for pushing part of the surface of the positioning piece out of the blind hole are arranged in the blind hole, the installation channel is provided with a plurality of pits matched with the positioning piece along the extending direction of the installation channel, and a user can push the plate-shaped body to enable the plate-shaped body to fall into the pits different in the positioning piece so as to realize the adjustment of arc extinguishing airflow flux.
In the arc extinguishing apparatus for the portable single-phase air bypass switch, the number of the air flow adjusting devices is multiple, and the air flow adjusting devices are uniformly arranged around the aluminum sleeve.
In the arc extinguishing device for the portable single-phase air bypass switch, the parts of the positioning pieces protruding out of the blind holes are cambered surfaces, the number of the positioning pieces is at least one group, and each group of the positioning pieces are symmetrically arranged on the upper side and the lower side of the plate-shaped body.
In the arc extinguishing apparatus for the portable single-phase air bypass switch according to the present invention, the second elastic member is a spring.
In the arc extinguishing apparatus for the portable single-phase air bypass switch according to the present invention, the first elastic member is a spring.
In the arc extinguishing device for the portable single-phase air bypass switch, the small shaft is columnar and is provided with the annular flange close to the bottom end along the outer peripheral wall of the small shaft, the spring is sleeved on the lower part of the small shaft positioned on the annular flange and abutted against the annular flange, the upper part of the small shaft positioned on the annular flange is sleeved with the shaft sleeve, and the exhaust ring is sleeved outside the small shaft and abutted between the annular flange and the shaft sleeve.
The arc extinguishing device for the portable single-phase air bypass switch has the following beneficial effects: the invention can increase the air arc-blowing effect, and compress the air in the air storage area in the aluminum sleeve upwards to generate airflow while generating electric arc between the moving contact and the static contact, thereby achieving the effect of blowing out and extinguishing arc by airflow, improving the arc-extinguishing reliability and enhancing the use safety of the maintenance tool.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:
FIG. 1 is a schematic diagram of the switch closing configuration of the preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the switch of the preferred embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another preferred embodiment of the present invention when the switch is closed;
FIG. 4 is a schematic structural diagram of another preferred embodiment of the present invention when the switch is opened;
fig. 5 is a preferred embodiment of the air flow regulating device.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Exemplary embodiments of the invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper", "lower", "bottom", and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Aiming at the defects that the prior art can only rely on the air to extinguish arc, and the reliability and the safety are not enough, the invention provides the idea of increasing air arc blowing, and the general idea of the invention is as follows: an exhaust ring is arranged on the small shaft, so that when the switch is switched on and the moving contact is meshed with the static contact, an air storage area is formed above the exhaust ring. When the switch is switched off and the moving contact is separated from the static contact, the first elastic piece pushes the small shaft to move upwards, so that the exhaust ring on the small shaft is driven to move upwards to compress air in the air storage area and exhaust the air upwards through the air hole of the static contact, and the air current arc extinction is realized.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limited to the technical solutions of the present application, and the technical features of the embodiments and examples of the present invention may be combined with each other without conflict.
Referring to fig. 1, the arc extinguishing device in the preferred embodiment includes an aluminum sleeve and disposed within the aluminum sleeve: the air spring comprises a fixed contact 4, a moving contact 5 positioned above the fixed contact 4, a small shaft 1 positioned below the moving contact 5 and connected with the moving contact 5, and a first elastic part 2 arranged at the bottom end of the small shaft 1, wherein an exhaust ring 3 is arranged on the small shaft 1.
Preferably, the first elastic member 2 is a spring.
Specifically, staff 1 is the column and is provided with annular flange 11 along staff 1 periphery wall near the bottom position, and the spring housing is in the part below that is located annular flange 11 of staff 1, and the spring top and the butt of annular flange 11, and the outside cover of the part above that is located annular flange 11 of staff 1 has a axle sleeve 6, and exhaust ring 3 overlaps outside staff 1 and butt between annular flange 11 and axle sleeve 6.
Referring to fig. 1, when the switch is switched on, the moving contact 5 and the fixed contact 4 are tightly engaged, the spring is compressed, and the fixed contact 4, the moving contact 5, the small shaft 1, the aluminum sleeve and the exhaust ring 3 together enclose to form an air storage area 100.
Referring to fig. 2, when the switch is opened, the moving contact 5 is separated from the fixed contact 4, the spring pushes the small shaft 1 to move upward, so as to drive the exhaust ring 3 on the small shaft 1 to move upward, the moving contact 5, the small shaft 1, the aluminum sleeve and the exhaust ring 3 jointly enclose to form an air compression area 200, air in the air storage area 100 in fig. 1 is compressed to the air compression area 200 in fig. 2 and is exhausted upward through the air hole of the fixed contact 4, a single-phase high-speed airflow can be generated in the aluminum sleeve, free electrons are blown away, the arc is cooled, arc extinguishing can be accelerated, and therefore the effect of arc extinguishing by the airflow is achieved, and the airflow flowing direction is indicated by the shear head in fig. 2.
Referring to fig. 3 to 4, another preferred embodiment is different from the previous embodiment in that a gas flow regulating device 7 for regulating the gas flow rate is provided on the gas flow compression path of the air storage area 100 for arc quenching according to the magnitude of the arc current. For example, the air flow adjusting device 7 may be a valve structure.
Referring to fig. 5, in another embodiment of the air flow adjusting device 7, the air flow adjusting device 7 is vertically arranged on the wall of the aluminum casing, and the user can press or pull the air flow adjusting device 7 to adjust the air flow.
Specifically, the aluminum sleeve is provided with an installation channel for installing the airflow adjusting device 7 along the thickness direction of the tube wall, and the installation channel can be arranged below the static contact 4. The airflow adjusting device 7 includes a plate-shaped body 73 matching with the installation channel in shape, a blind hole is opened on the upper surface and/or the lower surface of the plate-shaped body 73, a positioning member 71 and a second elastic member 72 pushing part of the surface of the positioning member 71 out of the blind hole are disposed in the blind hole, and the second elastic member 72 may be a spring. The installation channel is provided with a plurality of recesses 70 matched with the positioning pieces 71 along the extension direction of the installation channel, and a user can push the plate-shaped body 73 to enable the positioning pieces 71 to fall into different recesses 70, so that the lengths of the plate-shaped body 73 extending into the air storage area 100 are different, and the adjustment of arc extinguishing airflow flux is realized. When the user determines that a large airflow is required for arc extinction, the plate-shaped body 73 may be pulled out, and conversely, the plate-shaped body 73 may be pushed in.
It is understood that the number of the air flow adjusting devices 7 is plural, and the plural air flow adjusting devices 7 are uniformly arranged around the aluminum sleeve.
In this embodiment, the portion of the positioning element 71 protruding from the blind hole is an arc surface, specifically a spherical surface, and the number of the positioning elements 71 is one group, but may also be multiple groups. Each set of positioning members 71 is symmetrically arranged on the upper and lower sides of the plate-shaped body.
In summary, the arc extinguishing device for the portable single-phase air bypass switch has the following beneficial effects: the invention can increase the air arc-blowing effect, and compress the air in the air storage area in the aluminum sleeve upwards to generate airflow while generating electric arc between the moving contact and the static contact, thereby achieving the effect of blowing out and extinguishing arc by airflow, improving the arc-extinguishing reliability and enhancing the use safety of the maintenance tool.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. The utility model provides an arc control device for portable single-phase air bypass switch which characterized in that, includes aluminium sleeve pipe and sets up intraductal at aluminium sleeve: the device comprises a fixed contact (4), a moving contact (5) positioned above the fixed contact (4), a small shaft (1) positioned below the moving contact (5) and connected with the moving contact (5), and a first elastic part (2) arranged at the bottom end of the small shaft (1), wherein an exhaust ring (3) is arranged on the small shaft (1);
when the switch is switched on, the moving contact (5) is meshed with the fixed contact (4), the first elastic part (2) is compressed, and the fixed contact (4), the moving contact (5), the small shaft (1), the aluminum sleeve and the exhaust ring (3) jointly enclose to form an air storage area (100); when the switch is switched off, the moving contact (5) is separated from the static contact (4), the first elastic part (2) pushes the small shaft (1) to move upwards, so that the exhaust ring (3) is driven to move upwards to compress air in the air storage area (100) and the air is discharged upwards through the air hole of the static contact (4) to realize air current arc extinction;
an air flow adjusting device (7) for adjusting the air flow is arranged on the air flow compression path of the air storage area (100).
2. An arc extinguishing device for a portable single-phase air bypass switch according to claim 1, characterized in that the air flow regulating device (7) is of a valve construction.
3. The arc extinguishing apparatus for a portable single-phase air bypass switch according to claim 1, the air flow adjusting device (7) is vertically arranged on the pipe wall of the aluminum sleeve, an installation channel for installing the air flow adjusting device (7) is arranged in the aluminum sleeve in a penetrating way along the thickness direction of the pipe wall, the air flow adjusting device (7) comprises a plate-shaped body (73), blind holes are formed in the upper surface and/or the lower surface of the plate-shaped body (73), a positioning piece (71) and a second elastic piece (72) for pushing part of the surface of the positioning piece (71) out of the blind holes are arranged in the blind holes, the mounting channel is provided with a plurality of pits (70) matched with the positioning piece (71) along the extending direction of the mounting channel, and a user can push the plate-shaped body (73) to enable the positioning piece (71) to fall into different pits (70) so as to realize the adjustment of arc extinguishing airflow flux.
4. An arc extinguishing apparatus for a portable single-phase air bypass switch according to claim 3, characterized in that the number of the air flow adjusting means (7) is plural, and the plural air flow adjusting means (7) are arranged evenly around the aluminum sleeve.
5. The arc extinguishing apparatus for the portable single-phase air bypass switch according to claim 3, wherein the portion of the positioning member (71) protruding out of the blind hole is a cambered surface, the number of the positioning members (71) is at least one group, and each group of the positioning members (71) are symmetrically arranged on the upper side and the lower side of the plate-shaped body.
6. The arc extinguishing apparatus for the portable single-phase air bypass switch according to claim 3, wherein the second elastic member (72) is a spring.
7. The arc extinguishing apparatus for a portable single-phase air bypass switch according to claim 1, wherein the first elastic member (2) is a spring.
8. The arc extinguishing apparatus for the portable single-phase air bypass switch according to claim 7, wherein the small shaft (1) is cylindrical and provided with an annular flange (11) near the bottom end along the outer peripheral wall of the small shaft (1), the spring is sleeved on the lower portion of the small shaft (1) located on the annular flange (11) and abutted against the annular flange (11), the upper portion of the small shaft (1) located on the annular flange (11) is sleeved with a bushing (6), and the exhaust ring (3) is sleeved outside the small shaft (1) and abutted between the annular flange (11) and the bushing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180067.6A CN110233074B (en) | 2018-03-05 | 2018-03-05 | Arc extinguishing device for portable single-phase air bypass switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180067.6A CN110233074B (en) | 2018-03-05 | 2018-03-05 | Arc extinguishing device for portable single-phase air bypass switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110233074A CN110233074A (en) | 2019-09-13 |
| CN110233074B true CN110233074B (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810180067.6A Active CN110233074B (en) | 2018-03-05 | 2018-03-05 | Arc extinguishing device for portable single-phase air bypass switch |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013022572A1 (en) * | 2011-08-05 | 2013-02-14 | Eaton Corporation | Insulated arc flash arrester |
| CN104064392A (en) * | 2014-06-25 | 2014-09-24 | 江苏华唐电器有限公司 | Portable single-phase air bypass switch |
| CN204011228U (en) * | 2014-06-25 | 2014-12-10 | 江苏华唐电器有限公司 | Portable single-phase air bypass switch |
| CN105304364A (en) * | 2013-04-22 | 2016-02-03 | 江苏省电力公司常州供电公司 | Single-phase air bypass switch easy to operate |
| CN207441520U (en) * | 2017-11-23 | 2018-06-01 | 云南电网有限责任公司昭通供电局 | A kind of arc-control device for portable single-phase air bypass switch |
-
2018
- 2018-03-05 CN CN201810180067.6A patent/CN110233074B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013022572A1 (en) * | 2011-08-05 | 2013-02-14 | Eaton Corporation | Insulated arc flash arrester |
| CN105304364A (en) * | 2013-04-22 | 2016-02-03 | 江苏省电力公司常州供电公司 | Single-phase air bypass switch easy to operate |
| CN104064392A (en) * | 2014-06-25 | 2014-09-24 | 江苏华唐电器有限公司 | Portable single-phase air bypass switch |
| CN204011228U (en) * | 2014-06-25 | 2014-12-10 | 江苏华唐电器有限公司 | Portable single-phase air bypass switch |
| CN207441520U (en) * | 2017-11-23 | 2018-06-01 | 云南电网有限责任公司昭通供电局 | A kind of arc-control device for portable single-phase air bypass switch |
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| Publication number | Publication date |
|---|---|
| CN110233074A (en) | 2019-09-13 |
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