CN113611567A - Arc striking device for single-column double-arm vertical telescopic isolating switch - Google Patents
Arc striking device for single-column double-arm vertical telescopic isolating switch Download PDFInfo
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- CN113611567A CN113611567A CN202110997564.7A CN202110997564A CN113611567A CN 113611567 A CN113611567 A CN 113611567A CN 202110997564 A CN202110997564 A CN 202110997564A CN 113611567 A CN113611567 A CN 113611567A
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- China
- Prior art keywords
- rod
- arc striking
- arc
- isolating switch
- static contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
Abstract
The invention provides an arc striking device for a single-column double-arm vertical telescopic isolating switch, which is arranged on two switch arms of the isolating switch, wherein the two switch arms are mutually crossed and opened and closed; the arc striking component comprises a fixing piece, a limiting hook and an arc striking rod. According to the arc striking device provided by the invention, the arc striking rod is arranged between the static contact rod and the movable contact piece, so that when the isolating switch is switched on, the static contact rod is firstly contacted with the arc striking rod and then contacted with the movable contact piece, when the isolating switch is switched off, the static contact rod is firstly separated from the movable contact piece and then separated from the arc striking rod, so that the static contact rod and the movable contact piece are not directly contacted through the arc striking rod during the current conversion of the isolating switch, and the effect of effectively protecting the static contact rod and the movable contact piece from being burnt is achieved.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to an arc striking device for a single-column double-arm vertical telescopic isolating switch.
Background
The high-voltage isolating switch is an important switching device in an electric system of a power plant and a transformer substation, needs to be matched with a high-voltage circuit breaker for use, is suitable for indoor devices with three-phase alternating current of 50Hz and rated voltage of 12KV, and is used for connecting, disconnecting or converting lines of high-voltage equipment under the condition of voltage and load. The isolating switch can be divided into an indoor type and an outdoor type according to different installation places; according to the number of the insulating struts, the insulating struts can be divided into a single-strut type, a double-strut type and a three-strut type.
At present, an isolating switch is mainly used for reliably isolating a part needing power failure from a part needing power charging in a high-voltage distribution device so as to ensure the safety of technical personnel in the process of maintenance and play a role in isolating voltage; and the method can also be used for carrying out switching operation of certain circuits so as to change the operation mode of the system. However, as the general high-voltage isolating switch is not provided with an arc striking device, strong electric arcs are generated when switching buses of the isolating switch under high voltage convert current, and the arc burning time of the electric arcs is long, so that moving and static contact rods are burnt, and personal safety is possibly damaged.
In view of the above, it is necessary to provide an arc striking device for a single-column double-arm vertically retractable disconnector to solve the problem that the existing disconnector has no arc striking device.
Disclosure of Invention
The invention mainly aims to provide an arc striking device for a single-column double-arm vertical telescopic isolating switch, and aims to solve the technical problem that in the prior art, a high-voltage isolating switch does not have an arc striking device, so that an arc is generated when an opening and closing bus of the isolating switch converts current, and a moving contact rod and a static contact rod are burnt.
In order to achieve the above purpose, the invention provides an arc striking device for a single-column double-arm vertical telescopic isolating switch, which is arranged on two switch arms of the isolating switch, wherein the two switch arms are mutually crossed and opened and closed; wherein
Each arc striking component comprises a fixing piece, a limiting hook and an arc striking rod, wherein the limiting hook is fixedly arranged at the lower end of the conducting rod, and a hooking part of the limiting hook protrudes out of one side surface, close to the static contact rod, of the conducting rod by a preset distance; the fixing piece is arranged at the upper end of the conducting rod;
the arc striking rod comprises an arc striking rod body, an arc striking rod fixing end and an arc striking rod limiting end, the arc striking rod fixing end is connected with one side, far away from the static contact rod, of the fixing part, the rod body of the arc striking rod is bent in an arc shape from the arc striking rod fixing end to the limiting hook, the limiting end of the arc striking rod is clamped in the hooking part of the limiting hook, so that the arc striking rod body is fixedly installed on one side, close to the static contact rod, of the conductive rod, and the arc striking rod body is located between the movable contact piece and the static contact rod; the limiting end of the arc striking rod moves in the direction close to and far away from the static contact rod under the limitation of the hooking part of the limiting hook.
Preferably, a preset elastic gap exists between the movable contact piece and the conducting rod.
Preferably, the distance between the arc striking rod body and the movable contact piece is X-Xcm.
Preferably, the fixing piece comprises a fixing clamping block, at least two positioning bolts and at least one fastening bolt; first threaded holes matched with the positioning bolts are symmetrically formed in the fixing clamping block, a second threaded hole matched with the fastening bolt is formed in the middle of the two first threaded holes, and a positioning hole matched with the arc striking rod is formed in the position, corresponding to the second threaded hole, of the center of the side face of the fixing clamping block.
Preferably, the upper end of the conducting rod is provided with a third threaded hole matched with the positioning bolt, and the position distance of the third threaded hole corresponds to the position distance of the first threaded hole.
Preferably, one end of the limiting hook is fixedly arranged on the conducting rod, after a preset distance extends from one side, close to the static contact rod, of the rod body of the limiting hook, and the other end of the limiting hook bends 180 degrees in a direction deviating from the conducting rod, so that the hooking part of the limiting hook with a preset limiting distance is formed.
Preferably, the arc striking rod is made of corrosion-resistant elastic metal material.
Preferably, on the switch arm, the arc striking assembly is mounted on the same side of the plurality of conductive rods in the length direction of the stationary contact rod.
Compared with the prior art, the invention has the following advantages:
the invention provides an arc striking device for a single-column double-arm vertical telescopic isolating switch, which is arranged on switch arms which are mutually crossed and mutually opened and closed, and comprises two arc striking components, a static contact rod and two movable contact pieces, wherein the two arc striking components are respectively and fixedly connected with two conducting rods on the switch arms; the arc striking component comprises a fixing piece, a limiting hook and an arc striking rod. According to the arc striking device provided by the invention, the arc striking rod is arranged between the static contact rod and the movable contact piece, so that when the isolating switch is switched on, the static contact rod is firstly contacted with the arc striking rod and then contacted with the movable contact piece, when the isolating switch is switched off, the static contact rod is firstly separated from the movable contact piece and then separated from the arc striking rod, so that the static contact rod and the movable contact piece are not directly contacted through the arc striking rod during the current conversion of the isolating switch on and off, and the effect of effectively protecting the static contact rod and the movable contact piece from being burnt is achieved.
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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a front view of the arc striking device of the disconnector of the present invention;
fig. 2 is a perspective view of the arc striking device of the isolating switch of the invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Conducting |
200 | |
| 210 | Fixed |
220 | |
| 230 | Fastening |
240 | Locating |
| 300 | Limiting |
400 | Arc |
| 500 | |
600 | Movable contact spring |
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that all the directional indicators (such as the upper and lower … …) in the embodiment of the present invention are only used to explain the relative position relationship, movement, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Moreover, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary to be able to be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
Referring to fig. 1-2, the invention provides an arc striking device for a single-column double-arm vertically telescopic isolating switch, which is disposed on two switch arms (not shown) of the isolating switch, wherein the two switch arms are crossed and opened and closed with each other, and the arc striking device comprises two arc striking components (not shown) fixedly connected with conducting rods 100 on the two switch arms respectively, a stationary contact rod 500 fixedly inserted between the two conducting rods 100, and two movable contact pieces 600 fixedly disposed on the sides of the conducting rods 100 close to the stationary contact rod 500 respectively; wherein the content of the first and second substances,
each arc striking assembly comprises a fixing piece 200, a limiting hook 300 and an arc striking rod 400, wherein the limiting hook 300 is fixedly arranged at the lower end of the conducting rod 100, and a hooking part (not shown) of the limiting hook 300 protrudes out of one side surface of the conducting rod 100 close to the static contact rod 500 by a preset distance; the fixing member 200 is disposed at the upper end of the conductive rod 100;
the arc striking rod 400 comprises an arc striking rod body (not shown), an arc striking rod fixing end (not shown) and an arc striking rod limiting end (not shown), the arc striking rod fixing end is connected with one side, far away from the static contact rod 500, of the fixing part 200, the rod body of the arc striking rod 400 is upwards from the arc striking rod fixing end and then moves towards the direction of the limiting hook, the arc striking rod limiting end is clamped in the hooking part of the limiting hook 300, so that the arc striking rod body is fixedly arranged on one side, close to the static contact rod 500, of the conductive rod 100, and is positioned between the movable contact piece 600 and the static contact rod 500; wherein the limit end of the striking rod moves in a direction approaching and departing from the stationary contact rod 500 by being limited by the hooking part of the limit hook 300. In a specific embodiment, the limit hook 300 may be disposed away from the conductive rod 100 by a certain distance in the length direction of the static contact rod 500, so that the arc striking rod 400 may also be away from the conductive rod 100 by a certain distance in the length direction of the static contact rod 500 when being clamped to the limit hook 300, thereby preventing the arc striking rod 400 from directly contacting the movable contact piece 600, and achieving the effect that the static contact rod 500 and the movable contact piece 600 do not directly participate in current conversion at the moment of switching on and off the isolating switch.
Specifically, when the disconnecting switch is switched on, the stationary contact rod 500 is fixed, the two switch arms approach the stationary contact rod 500, the two conducting rods 100 respectively located on the two switch arms also approach the stationary contact rod 500, in the process, the stationary contact rod 500 first contacts the arc striking rod 400 and applies a certain pressure to the arc striking rod 400, at this time, the fixed end of the arc striking rod is elastically deformed to a certain degree, the limiting end of the arc striking rod moves in the limiting hook 300 in the direction away from the stationary contact rod 500, and when the arc striking rod 400 is extruded to the plane position where the movable contact 600 is located in the direction away from the stationary contact rod 500, the stationary contact rod 500 contacts the movable contact 600; when the isolating switch is switched off, the two switch arms move away from the static contact rod 500, the two conducting rods 100 respectively positioned on the two switch arms also move away from the static contact rod 500, in the process, the static contact rod 500 is firstly separated from the arc striking rod 400, at the moment, the fixed end of the arc striking rod slowly restores to the original state, the limiting end of the arc striking rod moves towards the direction close to the static contact rod 500 under the action of the elastic force of the arc striking rod 400 until being clamped by the limiting hook 300, and when the arc striking rod 400 restores to the plane position where the movable contact piece 600 is positioned in the direction close to the static contact rod 500, the static contact rod 500 is separated from the movable contact piece 600; through the steps, the static contact rod 500 and the movable contact piece 600 are not directly switched but are subjected to current conversion through the arc striking rod 400 at the moment of switching on and off of the isolating switch, so that the static contact rod 500 and the movable contact piece 600 are protected.
Further, a predetermined elastic gap exists between the movable contact piece 600 and the conductive rod 100.
Further, the distance between the arc striking rod body and the movable contact piece 600 is X-Xcm. Specifically, the distance between the arc striking rod body and the movable contact piece 600 is X-Xcm in the direction close to or far away from the fixed contact rod, so as to ensure that the fixed contact rod 500 is firstly contacted with the arc striking rod 400 when the isolating switch is switched on, and after the arc striking rod 400 is extruded by the fixed contact rod 500 by X-Xcm, the fixed contact rod 500 is contacted with the movable contact piece 600, at the moment, the conversion current is relatively mild, and the fixed contact rod 500 and the movable contact piece 600 cannot be burnt.
Further, the fixing member 200 includes a fixing clamping block 210, at least two positioning bolts 220, and at least one fastening bolt 230; first threaded holes (not shown) matched with the positioning bolts 220 are symmetrically formed in the fixing clamping block 210, a second threaded hole (not shown) matched with the fastening bolt 230 is formed in the middle of the two first threaded holes, and a positioning hole 240 matched with the arc striking rod 400 is formed in the position, corresponding to the second threaded hole, of the center of the side face of the fixing clamping block 210. Specifically, the fixed end of the arc striking rod passes through the positioning hole 240 located at the center of the side of the fixing clamp block 210 from the side far away from the stationary contact rod 500, and the fixed end of the arc striking rod is locked by the cooperation of the fastening bolt 230 and the second threaded hole.
Further, a third threaded hole (not shown) is disposed at the upper end of the conductive rod 100 and is matched with the positioning bolt 220, and the distance of the third threaded hole corresponds to the distance of the first threaded hole. Specifically, the third threaded hole may not penetrate through the conductive rod 100, and only the positioning bolt 220 needs to be screwed and fixed.
Further, the one end of limit hook 300 is fixed to be set up on conducting rod 100, and after the body of rod of limit hook 300 extended the distance of predetermineeing towards the one side that is close to static contact rod 500, the other end orientation of limit hook 300 was 180 buckles towards the direction of deviating from conducting rod 100 to form the portion of holding with a hook of limit hook 300 that has the restriction distance of predetermineeing. Specifically, the arc striking rod stopper moves in a direction approaching or departing from the stationary contact rod 500 in the hooking portion of the stopper hook 300 to restrict the position deviation of the disconnecting switch when opening or closing the switch.
Further, the arc runner 400 is made of a corrosion-resistant elastic metal material. Those skilled in the art will appreciate that the resilient metallic material includes, but is not limited to, high alloy steel of 06Cr19Ni 10; 06Cr19Ni10 high alloy steel is one of the most widely used chromium-nickel stainless steels, and has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; it is suitable for processing, storing and transporting food, and has good processing performance and weldability; the mechanism is that alloy elements form a compact oxidation film to isolate oxygen contact and prevent continuous oxidation.
Further, on the switch arm, the arc striking assembly is mounted to the same side of the plurality of conductive bars 100 in the length direction of the stationary contact bar 500. Specifically, the plurality of arc striking assemblies are located on the same side of the plurality of conducting rods 100 in the length direction of the stationary contact rod 500, so that the arc striking rods 400 can be uniformly stressed when the disconnecting switch is switched on and switched off, and the arc striking rods 400 are prevented from being biased when being acted by external force.
In the above technical solutions, the above are only preferred embodiments of the present invention, and the technical scope of the present invention is not limited thereby, and all the technical concepts of the present invention include the claims of the present invention, which are directly or indirectly applied to other related technical fields by using the equivalent structural changes made in the content of the description and the drawings of the present invention.
Claims (8)
1. An arc striking device for a single-column double-arm vertical telescopic isolating switch is arranged on two switch arms which are mutually crossed and opened and closed of the isolating switch, and is characterized by comprising two arc striking components, a static contact rod and two movable contact pieces, wherein the two arc striking components are respectively and fixedly connected with conducting rods on the two switch arms; wherein the content of the first and second substances,
each arc striking component comprises a fixing piece, a limiting hook and an arc striking rod, wherein the limiting hook is fixedly arranged at the lower end of the conducting rod, and a hooking part of the limiting hook protrudes out of one side surface, close to the static contact rod, of the conducting rod by a preset distance; the fixing piece is arranged at the upper end of the conducting rod;
the arc striking rod comprises an arc striking rod body, an arc striking rod fixing end and an arc striking rod limiting end, the arc striking rod fixing end is connected with one side, far away from the static contact rod, of the fixing part, the rod body of the arc striking rod is bent in an arc shape from the arc striking rod fixing end to the limiting hook, the limiting end of the arc striking rod is clamped in the hooking part of the limiting hook, so that the arc striking rod body is fixedly installed on one side, close to the static contact rod, of the conductive rod, and the arc striking rod body is located between the movable contact piece and the static contact rod; the limiting end of the arc striking rod moves in the direction close to and far away from the static contact rod under the limitation of the hooking part of the limiting hook.
2. An arc striking device for a single-pole double-arm vertical telescopic disconnecting switch according to claim 1, wherein a predetermined elastic gap exists between the moving contact piece and the conducting rod.
3. An arc striking device for a single-column double-arm vertical telescopic isolating switch as claimed in claim 1, wherein the distance between the arc striking rod body and the moving contact is X-Xcm.
4. The arc ignition device for the single-column double-arm vertical telescopic isolating switch as claimed in claim 1, wherein the fixing member comprises a fixing clamping block, at least two positioning bolts and at least one fastening bolt; first threaded holes matched with the positioning bolts are symmetrically formed in the fixing clamping block, a second threaded hole matched with the fastening bolt is formed in the middle of the two first threaded holes, and a positioning hole matched with the arc striking rod is formed in the position, corresponding to the second threaded hole, of the center of the side face of the fixing clamping block.
5. The arc striking device of the single-column double-arm vertical telescopic isolating switch as claimed in claim 4, wherein the upper end of the conducting rod is provided with a third threaded hole matched with the positioning bolt, and the distance of the third threaded hole corresponds to the distance of the first threaded hole.
6. The arc striking device of a single-column double-arm vertical telescopic type disconnecting switch according to claim 1, wherein one end of the limit hook is fixedly arranged on the conducting rod, after a rod body of the limit hook extends out of a preset distance towards one side close to the static contact rod, the other end of the limit hook bends 180 degrees towards a direction away from the conducting rod to form the hooking part of the limit hook with a preset limiting distance.
7. The arc ignition device for the single-column double-arm vertical telescopic isolating switch as claimed in claim 1, wherein the arc ignition rod is made of corrosion-resistant elastic metal material.
8. The arc ignition device for the single-column double-arm vertical telescopic isolating switch as claimed in claim 1, wherein the arc ignition assembly is installed on the same side of the plurality of conducting rods along the length direction of the static contact rod on the switch arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110997564.7A CN113611567A (en) | 2021-08-27 | 2021-08-27 | Arc striking device for single-column double-arm vertical telescopic isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110997564.7A CN113611567A (en) | 2021-08-27 | 2021-08-27 | Arc striking device for single-column double-arm vertical telescopic isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113611567A true CN113611567A (en) | 2021-11-05 |
Family
ID=78309577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110997564.7A Pending CN113611567A (en) | 2021-08-27 | 2021-08-27 | Arc striking device for single-column double-arm vertical telescopic isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113611567A (en) |
-
2021
- 2021-08-27 CN CN202110997564.7A patent/CN113611567A/en active Pending
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