CN111969417A - Piston type arc extinguishing device - Google Patents
Piston type arc extinguishing device Download PDFInfo
- Publication number
- CN111969417A CN111969417A CN202010876484.1A CN202010876484A CN111969417A CN 111969417 A CN111969417 A CN 111969417A CN 202010876484 A CN202010876484 A CN 202010876484A CN 111969417 A CN111969417 A CN 111969417A
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- China
- Prior art keywords
- cavity
- arc
- insulating
- insulator
- exhaust
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/02—Means for extinguishing arc
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Abstract
The invention discloses a piston type arc extinguishing device, which comprises an insulating shell, wherein at least one group of exhaust channels are arranged on the insulating shell, and the exhaust channels enable the outside of the insulating shell to be communicated with a cavity; the arc cutting insulator and the insulation isolator are arranged in the cavity, and the arc cutting insulator is positioned between the exhaust channel and the insulation isolator; the arc cutting insulator is in sliding fit with the cavity, the insulating insulator is fixed in the cavity, a first arc channel is arranged on the arc cutting insulator, and a second arc channel is arranged on the insulating insulator; and a one-way pressure release valve is arranged in the exhaust passage, and when the pressure in the cavity is higher than the outside, the exhaust passage is opened to play a role in communicating the outside of the insulating shell with the cavity. The safety is high, and the damage is not easy to occur; the whole device has no metal structure, is equivalent to a common insulating device when not in work, and has no potential safety hazard; the lightning stroke on the power transmission line can be effectively protected, the safe operation of the power transmission line is ensured, and the stability of a power grid is maintained.
Description
Technical Field
The invention relates to lightning protection, in particular to a piston type arc extinguishing device.
Background
The transmission line is divided into an overhead transmission line and a cable line, the transmission line is very important to daily life and production, if the transmission line is damaged, life electricity and production electricity of people are affected, and unpredictable loss can be generated, so that the protection of the transmission line is very important. However, many potential safety hazards still exist in the existing power transmission line, and one of the potential safety hazards is lightning stroke. Particularly, in areas with frequent thunderstorms, the problem is more serious, lightning strikes can cause flashover of line insulators, single-phase grounding or tripping of the line is caused, accidents such as insulator breakage, breakdown and disconnection are caused more seriously, and power supply interruption of the line is caused for a longer time.
Disclosure of Invention
The invention aims to overcome the technical defects and provide a piston type arc-extinguishing device.
In order to solve the technical problem, the technical scheme provided by the invention is that the piston type arc extinguishing device comprises: the insulating shell is internally provided with a cavity, one end of the insulating shell is connected with a first hardware fitting, one tip end of the first hardware fitting extends to the cavity, the other end of the insulating shell is connected with a second hardware fitting, and one tip end of the second hardware fitting extends to the cavity;
the exhaust channel is arranged on the insulating shell and enables the outside of the insulating shell to be communicated with the cavity;
the arc cutting insulator and the insulation isolator are arranged in the cavity, and the arc cutting insulator is positioned between the exhaust channel and the insulation isolator; the arc cutting insulator is in sliding fit with the cavity, the insulating insulator is fixed in the cavity, a first arc channel is arranged on the arc cutting insulator, and a second arc channel is arranged on the insulating insulator;
and a one-way pressure release valve is arranged in the exhaust passage, and when the pressure in the cavity is higher than the outside, the exhaust passage is opened to play a role in communicating the outside of the insulating shell with the cavity.
As an improvement, the insulating isolator divides the cavity into an arc-cutting insulator cavity and a tail cavity; the tail cavity at least comprises a group of exhaust channels; the arc cutting insulator cavity at least comprises a group of exhaust channels.
As an improvement, the arc cutting insulator cavity comprises two groups of exhaust channels, one group of exhaust channels is close to the first hardware fitting, and the other group of exhaust channels is close to the insulating separator.
As an improvement, one end of the arc cutting insulator is provided with a cavity, and the other end of the arc cutting insulator is provided with a bulge;
a groove is formed in one side of the insulating spacer and is matched with the protrusion;
the opening direction of the cavity faces the first hardware fitting.
As an improvement, an annular groove is formed in the cavity, an outer wall is arranged between the insulating isolation body and the cavity, a part of the outer wall is located in the annular groove, a high-temperature-resistant elastic belt is arranged on the outer wall, and the other end of the high-temperature-resistant elastic belt is fixedly connected with the bottom of the annular groove.
As an improvement, one end of the first arc channel is communicated with the cavity, a protrusion extends from the other end of the first arc channel, and one end of the second arc channel is communicated with the groove.
As a modification, the number of the exhaust passages per one set of the exhaust passages is two, and the exhaust passages are oppositely disposed with respect to the insulating housing.
As an improvement, the insulating shell is provided with skirts, and the number of the skirts is not less than two along the axis of the insulating shell.
Compared with the prior art, the invention has the advantages that: the safety is high, and the damage is not easy to occur; the whole device has no metal structure, is equivalent to a common insulating device when not in work, and has no potential safety hazard; the lightning stroke on the power transmission line can be effectively protected, the safe operation of the power transmission line is ensured, and the stability of a power grid is maintained.
Drawings
Fig. 1 is a schematic view of a piston type arc extinguishing apparatus according to the present invention.
As shown in the figure: 1. insulating housing, 2, cavity, 3, first gold utensil, 4, second gold utensil, 5, exhaust passage, 6, cut arc insulator, 7, insulating isolator, 8, first arc passageway, 9, second arc passageway, 10, cut arc insulator cavity, 11, afterbody cavity, 12, cavity, 13, arch, 14, annular groove, 15, outer wall, 16, skirt, 17, high temperature resistant elastic webbing, 18, recess, 19, one-way relief valve.
Detailed Description
The piston type arc extinguishing device of the present invention will be further described in detail with reference to the accompanying drawings.
With reference to fig. 1, the piston type arc extinguishing device comprises an insulating shell, wherein a cavity is formed in the insulating shell, one end of the insulating shell is connected with a first hardware fitting, one tip end of the first hardware fitting extends to the cavity, the other end of the insulating shell is connected with a second hardware fitting, and one tip end of the second hardware fitting extends to the cavity;
at least one group of exhaust channels 5 are arranged on the insulating shell 1, and the exhaust channels 5 enable the outside of the insulating shell 1 to be communicated with the cavity 2;
the arc cutting insulator 6 and the insulating insulator 7 are arranged in the cavity 2, and the arc cutting insulator 6 is positioned between the exhaust channel 5 and the insulating insulator 7; the arc cutting insulator 6 is in sliding fit with the cavity 2, the insulating insulator 7 is fixed in the cavity 2, a first arc channel 8 is arranged on the arc cutting insulator 6, and a second arc channel 9 is arranged on the insulating insulator 7;
a one-way pressure release valve 19 is arranged in the exhaust passage 5, and when the pressure in the cavity 2 is higher than the outside, the exhaust passage 5 is opened to enable the outside of the insulating shell 1 to be communicated with the cavity 2.
The insulating isolation body 7 divides the cavity 2 into an arc cutting insulator cavity 10 and a tail cavity 11; the tail cavity 11 at least comprises a group of exhaust channels 5; the arc cutting insulator cavity 10 at least comprises a group of exhaust channels 5.
The arc cutting insulator cavity 10 comprises two groups of exhaust passages 5, one group of exhaust passages 5 is close to the first hardware fitting 3, and the other group of exhaust passages 5 is close to the insulating separator 7.
One end of the arc cutting insulator 6 is provided with a cavity 12, and the other end is provided with a bulge 13;
a groove 18 is arranged on one side of the insulating isolator 7, and the groove 18 is matched with the bulge 13;
the opening direction of the cavity 12 faces the first fitting 3.
The insulating structure is characterized in that an annular groove 14 is formed in the cavity 2, an outer wall 15 is arranged between the insulating isolation body 7 and the cavity 12, a part of the outer wall 15 is located in the annular groove 14, a high-temperature-resistant elastic belt 17 is arranged on the outer wall 15, and the other end of the high-temperature-resistant elastic belt 17 is fixedly connected with the bottom of the annular groove 14.
One end of the first arc channel 8 is communicated with the cavity 12, the other end of the first arc channel extends out of the protrusion 13, and one end of the second arc channel 9 is communicated with the groove 18.
The number of the exhaust passages 5 on each set of the exhaust passages 5 is two, and the exhaust passages are oppositely disposed with respect to the insulating housing 1.
Be equipped with the apron 16 on insulating casing 1, apron 16 is provided with along the axis defence line of insulating casing 1 and is not less than two.
The arc is drawn into the cavity 2 of the insulating housing 1 from the first fitting 3, and the moving track of the arc in the arc extinguishing device is as follows.
When the electric arc enters the cavity 2, the air in the cavity 2 is heated and expanded, the pressure in the cavity is increased continuously, a part of the pressure is released outwards from the one-way pressure release valve 19 on the exhaust passage 5, and the other part of the energy pushes the piston type insulator to move towards the other side.
When the energy of the electric arc is larger, the electric arc cutting insulator 6 is pushed to the insulating insulator 7, at the moment, the protrusion 13 on the electric arc cutting insulator 6 is positioned in the groove 14 on the insulating insulator 7, the first electric arc channel 8 on the electric arc cutting insulator 6 is blocked by the groove 14 on the insulating insulator 7, the second electric arc channel 9 on the insulating insulator 7 is blocked by the electric arc cutting insulator 6, and the electric arc channels are completely isolated, so that the purpose of cutting off the electric arc is achieved. When the arc energy is insufficient to push the arc cutting insulator 6 to the insulating isolator 7, the arc may be discharged outward through the one-way relief valve 19 located on the vent passage 5 in the arc cutting insulator cavity 10, the arc may enter the tail cavity 11 through the first arc passage 8 and the second arc passage 9, and be discharged outward from the one-way relief valve 19 on the vent passage 5 in the tail cavity 11. Thereby achieving the purpose of breaking the electric arc.
The arc cutting insulator 6 is reset by the tension movement of the high temperature resistant elastic belt 17.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A piston type arc extinguishing device comprises an insulating shell (1), wherein a cavity (2) is arranged in the insulating shell (1), one end of the insulating shell (1) is connected with a first hardware fitting (3), one tip of the first hardware fitting (3) extends to the cavity (2), the other end of the insulating shell (1) is connected with a second hardware fitting (4), and one tip of the second hardware fitting (4) extends to the cavity (2);
the method is characterized in that:
the air exhaust device is characterized in that at least one group of air exhaust channels (5) are arranged on the insulating shell (1), and the air exhaust channels (5) enable the outside of the insulating shell (1) to be communicated with the cavity (2);
the arc cutting insulator (6) and the insulating insulator (7) are arranged in the cavity (2), and the arc cutting insulator (6) is positioned between the exhaust channel (5) and the insulating insulator (7); the arc cutting insulator (6) is in sliding fit with the cavity (2), the insulating insulator (7) is fixed in the cavity (2), a first arc channel (8) is arranged on the arc cutting insulator (6), and a second arc channel (9) is arranged on the insulating insulator (7);
and a one-way pressure release valve (19) is arranged in the exhaust passage (5), and when the pressure in the cavity (2) is higher than the outside, the exhaust passage (5) is opened to play a role in communicating the outside of the insulating shell (1) with the cavity (2).
2. A piston arc quenching device as claimed in claim 1, wherein: the insulating isolation body (7) divides the cavity (2) into an arc cutting insulator cavity (10) and a tail cavity (11); the tail cavity (11) at least comprises a group of exhaust channels (5); the arc cutting insulator cavity (10) at least comprises a group of exhaust channels (5).
3. A piston arc quenching device as claimed in claim 2, wherein: the arc cutting insulator cavity (10) comprises two groups of exhaust channels (5), one group of exhaust channels (5) is close to the first hardware fitting (3), and the other group of exhaust channels (5) is close to the insulating isolator (7).
4. A piston arc quenching device as claimed in claim 3, wherein: one end of the arc cutting insulator (6) is provided with a cavity (12), and the other end is provided with a bulge (13);
a groove (18) is formed in one side of the insulating isolator (7), and the groove (18) is matched with the protrusion (13);
the opening direction of the cavity (12) faces the first hardware (3).
5. A piston arc extinguishing device according to claim 4, characterized in that: be equipped with annular groove (14) in cavity (2), be outer wall (15) between insulating isolator (7) and cavity (12), a part of outer wall (15) is located annular groove (14), be equipped with high temperature resistant elastic webbing (17) on outer wall (15), the other one end of high temperature resistant elastic webbing (17) and the bottom fixed connection of annular groove (14).
6. A piston arc extinguishing device according to claim 4, characterized in that: one end of the first arc channel (8) is communicated with the cavity (12), the other end of the first arc channel extends out of the bulge (13), and one end of the second arc channel (9) is communicated with the groove (18).
7. A piston arc quenching device as claimed in claim 1, wherein: the number of the exhaust passages (5) on each group of exhaust passages (5) is two, and the two exhaust passages are oppositely arranged relative to the insulating shell (1).
8. A piston arc quenching device as claimed in claim 1, wherein: be equipped with apron (16) on insulating casing (1), apron (16) are provided with along the axis defence line of insulating casing (1) and are not less than two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010876484.1A CN111969417A (en) | 2020-08-27 | 2020-08-27 | Piston type arc extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010876484.1A CN111969417A (en) | 2020-08-27 | 2020-08-27 | Piston type arc extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111969417A true CN111969417A (en) | 2020-11-20 |
Family
ID=73399404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010876484.1A Pending CN111969417A (en) | 2020-08-27 | 2020-08-27 | Piston type arc extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111969417A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436815A (en) * | 2021-07-09 | 2021-09-24 | 江西东维电气有限公司 | Line column type lightning protection insulator |
-
2020
- 2020-08-27 CN CN202010876484.1A patent/CN111969417A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436815A (en) * | 2021-07-09 | 2021-09-24 | 江西东维电气有限公司 | Line column type lightning protection insulator |
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