CN107732663B - Coulomb force traction ball-type compressed jet airflow arc extinguishing device and ball-type arcing horn - Google Patents
Coulomb force traction ball-type compressed jet airflow arc extinguishing device and ball-type arcing horn Download PDFInfo
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- CN107732663B CN107732663B CN201710825527.1A CN201710825527A CN107732663B CN 107732663 B CN107732663 B CN 107732663B CN 201710825527 A CN201710825527 A CN 201710825527A CN 107732663 B CN107732663 B CN 107732663B
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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
- H01T19/00—Devices providing for corona discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/48—Means for obtaining improved distribution of voltage; Protection against arc discharges over chains or other serially-arranged insulators
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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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- 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
- H01T1/08—Means for extinguishing arc using flow of arc-extinguishing fluid
- H01T1/10—Means for extinguishing arc using flow of arc-extinguishing fluid with extinguishing fluid evolved from solid material by heat of arc
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Abstract
The invention discloses a coulomb force traction spherical compressed jet air flow arc extinguishing device and a spherical arcing horn, wherein: the arc extinguishing device mainly comprises an upper hemisphere and a lower hemisphere, wherein the upper hemisphere is a coulomb force arc striking metal hemisphere, and the lower hemisphere is an insulating compression arc extinguishing hemisphere; a plurality of layers of arc extinguishing channels distributed along the circumference are arranged in the insulating compression arc extinguishing hemisphere; an arc striking electrode is arranged at the bottom of the outer surface of the insulated compression arc extinguishing hemisphere. The invention has simple and reliable structure, attracts lightning leading, and reduces the shielding failure of the metal transmission line caused by lightning interception failure; and the lightning current is compressed, elongated and sprayed out, the electric arc is extinguished, and the counterattack probability caused by lightning strike of the lightning conductor is reduced.
Description
Technical Field
The invention relates to a lightning protection arc extinguishing device, in particular to a coulomb force traction spherical compressed jet airflow arc extinguishing device and a spherical arcing horn.
Background
Currently, in order to protect wires of metal transmission lines from lightning, it is generally adopted to erect lightning wires, and the standard DL/T620-1997 of electric power industry in China is specified in the 6.1.2 th clause of overvoltage protection and insulation coordination of alternating-current electric devices: the 110kV is used for erecting the lightning conductor along the whole line, and the lightning conductor is preferably erected along the whole line in mountain areas and areas with special strong lightning activities. The lightning conductor is structurally characterized in that a bare steel strand is arranged at the top ends of left and right transmission towers above a three-phase transmission cable, the steel strand is the lightning conductor, and the lightning conductor is conducted with the ground through the transmission towers on two sides. However, due to the insufficient lightning-guiding capability of the existing lightning conductor, after the metal transmission line adopts various conventional lightning-protection measures, the lightning nuisance tripping of the metal transmission line is still quite large, and the tripping times of the metal transmission line are counted in foreign countries and in the ground such as the Fujian, guangdong, hubei, northeast, north China and the like, and the lightning nuisance tripping times account for the first time of the total tripping times among the tripping times caused by various reasons. For example: in the 2002-2004 national power grid fault statistical table given by the current situation of metal transmission line operation in China and lightning protection in Yi Hui' 2008 in period 1 of high voltage technology, among the 231 times of line tripping caused by 9 reasons, lightning tripping is carried out 129 times, accounting for 55.8 percent of the total times and being in the first place; and as another example, the overhead metal transmission line above 35kV of Beijing power company in 2005-2007 is tripped 442 times, wherein the lightning strike is tripped 198 times, accounting for 44.8 percent of the total times and also being the first place. The operation statistics result of the metal conveying line shows that: the tripping rate caused by lightning shielding failure of the line in plain areas is basically equivalent to the tripping rate caused by counterattack; the influence of complex topography, gradient angle, large blocking distance span and wind blowing on the mountain line increase the swing degree of the lightning conductor and the wire, even the wire and the lightning conductor swing in opposite directions, so that the horizontal distance between the lightning conductor and the wire is increased, namely the protection angle of the lightning conductor to the wire is increased, and the shielding failure rate is much higher than the counterattack rate. The lightning conductor is erected on the line with the lightning trip accident and various conventional lightning protection technical measures are adopted, so that the existing various lightning protection technical measures cannot guarantee the safe operation of the metal transmission line.
Disclosure of Invention
Aiming at overcoming the defects of the prior art, the invention provides a spherical compressed jet air flow arc extinguishing device which has better lightning protection effect and is arranged on a lightning wire or an arcing horn and pulled by coulomb force.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the spherical compressed jet air flow arc extinguishing device is mainly composed of an upper hemisphere and a lower hemisphere, wherein the upper hemisphere is a coulomb force arc striking metal hemisphere, and the lower hemisphere is an insulating compressed arc extinguishing hemisphere; a plurality of layers of arc extinguishing channels which are arranged along the circumference are arranged in the insulated compressed arc extinguishing hemisphere, a plurality of arc extinguishing pipes are arranged in each layer of arc extinguishing channel, the last arc extinguishing pipe in the upper layer of arc extinguishing channel is electrically connected with the first arc extinguishing pipe in the lower layer of arc extinguishing channel, and the end parts of every two adjacent arc extinguishing pipes in the same layer of arc extinguishing channel are directly in touch connection or are connected through connecting pieces; the air flow spraying channels are arranged at the joints of every two adjacent arc extinguishing pipes close to the outer surface of the insulated compressed arc extinguishing hemisphere, and extend to the outer surface of the insulated compressed arc extinguishing hemisphere, namely the outer surface of the insulated compressed arc extinguishing hemisphere is provided with an air flow spraying port; an arc striking electrode is arranged at the bottom of the outer surface of the insulated compressed arc extinguishing hemisphere; the first arc-extinguishing tube of the first layer arc-extinguishing channel is electrically connected with the coulomb force arc-striking metal hemisphere, and the last arc-extinguishing tube of the last layer arc-extinguishing channel is electrically connected with the arc-striking electrode at the bottom of the insulated compression arc-extinguishing hemisphere.
In the invention, the coulomb force arc striking metal hemisphere at the upper half part has the effect of attracting the electric arc, and when lightning impulse current passes through, a large amount of opposite charges are induced and accumulated on the metal hemisphere to generate strong coulomb force, so as to realize the traction effect on the electric arc, ensure the control of an arc-over channel in the arc forming process, and avoid the damage to the insulator caused by the fact that the electric arc drifts to the insulator after being formed; the insulating compression arc extinguishing hemisphere of latter half has set up the arc extinguishing passageway that a plurality of layers are constituteed by the arc extinguishing pipe, through the route of guiding and prescribing a limit to the electric arc, has a plurality of electric arc inflection points, produces strong air current at electric arc inflection point and carries out the arc extinguishing, has played fine lightning protection arc extinguishing effect, guarantees the safe and stable operation of defeated metal circuit.
The invention further discloses that the coulomb force arc striking metal hemisphere and the insulating compression arc extinguishing hemisphere are fixedly arranged together through a bolt component made of non-conductive materials. The mounting mode of the two hemispheres can be selected according to actual production needs, and the hemispheres can be fixedly mounted together, for example, mounting pieces can be arranged on the periphery of the hemispheres in an extending manner, and then the hemispheres are fixed together by using a non-conductive bolt component; bolts, bolt holes and the like can be arranged in the hemispheres, and then the hemispheres are fixedly installed in a mosaic or buckling mode.
The invention further discloses an arc-extinguishing tube which adopts a U-shaped arc-extinguishing tube or a straight arc-extinguishing tube.
The invention further describes that the U-shaped arc extinguishing pipe is internally provided with an arc guiding ball and two compression cold wall pipes; the arc guiding ball is arranged between the two compression cold wall pipes, and arc guiding rings are respectively arranged at two ports of the U-shaped arc extinguishing pipe. The compression cold wall pipe adopts a ceramic pipe; the arc guiding ball adopts a graphite ball or a metal ball; the arc guide ring adopts a graphite ring or a metal ring.
A plurality of U-shaped arc extinguishing pipes are spatially distributed, and the U-shaped arc extinguishing pipes comprise compression cold wall pipes and metal electrodes. The compression cold wall tube is used to compress the arc, creating a build-up of heat within the cold wall tube as it absorbs heat. The metal electrode is arranged at the center of the U-shaped arc extinguishing tube, so that the two ends of the U-shaped arc extinguishing tube form a semi-closed space. The compression cold wall pipe compresses electric arcs to form pressure gradients inside and outside the pipe, the compression cold wall pipe absorbs heat to form heat gradients outside the pipe, the pressure gradients and the heat gradients promote air flow in the semi-enclosed space to expand and jet rapidly, a longitudinal blowing jet orifice is formed, continuity of the electric arcs is cut off, and arc extinction is achieved effectively. The two U-shaped arc-extinguishing pipes are connected by a connecting metal part (a connecting metal ring and a connecting metal strip, or a metal block or a nested metal part), so that when an electric arc passes, a part of the electric arc is cut off by jet air flow, and the rest electric arc passes through the connecting metal part to form current to flow into the next U-shaped arc-extinguishing pipe, and the compression-jet-arc-extinguishing process is repeated again.
According to the invention, when the arc-extinguishing tube adopts the straight arc-extinguishing tube, the end parts of every two adjacent straight arc-extinguishing tubes far away from the outer surface of the insulated compressed arc-extinguishing hemisphere are connected together through the arc-guiding connecting electrode; the two ends of the arc-guiding connecting electrode are respectively embedded into the linear arc-extinguishing tube. The inner part of the straight arc extinguishing pipe is provided with an arc guiding ball and two compression cold wall pipes; the arc guiding ball is arranged between the two compression cold wall pipes, and an arc guiding ring is arranged at the port of the straight arc extinguishing pipe. The compression cold wall pipe adopts a ceramic pipe; the arc guiding ball adopts a graphite ball or a metal ball; the arc guide ring adopts a graphite ring or a metal ring.
A plurality of straight arc-extinguishing pipes are spatially distributed, and the straight arc-extinguishing pipes comprise compression cold wall pipelines and metal electrodes. The compression cold wall duct is used to compress the arc, creating a build-up of heat within the duct as the cold wall duct absorbs heat. The metal electrode is arranged in the center of the compressed single tube, so that the two ends of the compressed single tube form a semi-closed space. The compression cold wall pipe compresses electric arcs to form pressure gradients inside and outside the pipe, the compression cold wall pipe absorbs heat to form heat gradients outside the pipe, the pressure gradients and the heat gradients promote air flow in the semi-enclosed space to expand and jet rapidly, a longitudinal blowing jet orifice is formed, continuity of the electric arcs is cut off, and arc extinction is achieved effectively. The inside of every two single tubes are connected by arc guiding connection metal, so that the electric arc is converted into current which smoothly enters the next compressed single tube. The metal electrode in the single tube is compressed, so that the single tube is compressed to form a semi-closed space, and the arc guiding function is also realized. The two single-tube outer nozzles are connected by a connecting metal part (a connecting metal ring and a connecting metal strip, or a metal block or a nested metal part), so that when an electric arc passes, a part of the electric arc is cut off by jet air flow, and the rest electric arc passes through the connecting metal part to form a current to flow into the next compression single tube, and the compression-jet-arc extinguishing process is repeated again.
The invention further discloses that the connecting piece adopts a metal sheet or a metal wire or a three-way pipe, or the metal sheet, the metal wire and the three-way pipe are combined with each other for use, or the metal sheet, the metal wire and the three-way pipe are all used.
When the connecting piece adopts a three-way pipe, two ends of the three-way pipe are respectively provided with a guide arc connecting block; one end of the arc guide connecting block is a cylinder and extends into the three-way pipe, and the other end of the arc guide connecting block is in a ring shape and is directly connected with the end part of the arc extinguishing pipe in a contact or nested way; an air gap is arranged between the two arc-guiding connecting blocks in the three-way pipe, and the length of the air gap is just the diameter of the radial pipe of the three-way pipe.
The invention further discloses that the outer surface of the insulated compressed arc extinguishing hemisphere is also provided with a skirt edge, and the skirt edge is arranged along the arrangement direction of the airflow ejection opening. The skirt edge is arranged, so that the arc can be prevented from being water, the arc climbing distance can be increased, and the arc can be effectively prevented from directly flashover on the outer surface of the arc extinguishing device.
The upper end of the ball-type arcing horn is the grounding end of the insulator string, and a ball-type compressed jet air flow arc extinguishing device pulled by coulomb force is arranged; the lower end of the ball type arcing horn is the high-voltage end of the insulator string, and a high-voltage electrode or a ball type compressed jet airflow arc extinguishing device pulled by coulomb force is arranged; the air gap between the upper end and the lower end of the ball-type arcing horn is smaller than the height of the insulator string.
Because the air gap distance between the upper end and the lower end of the arcing horn is always smaller than the distance of the insulator, the arcing horn is always broken in preference to the insulator, compared with the traditional arcing horn which has no arc extinguishing function, the electric arc is not easy to extinguish and ablate the contact of the arcing horn, the novel ball-type arcing horn has the arc extinguishing function, when the electric arc is established between the arcing horns, the electric arc flows through an arc extinguishing pipeline in an arc extinguishing hemisphere, the electric arc is broken in a crushing way by generating huge electric arc physical compressibility directional explosive force through compression of the electric arc, and the continuous tearing of the power frequency electric arc is realized by utilizing a mechanism of combining the high-speed injection and the path mutation of the electric arc of adjacent sections; and forming an all-segment synchronous smashing annihilation situation of the arc channel through nearly hundred arc extinction points and tearing points, destroying the arc establishment channel and extinguishing the arc.
The working principle of the invention is as follows:
the invention is composed of coulomb force arc striking metal hemispheres and insulating compression arc extinguishing hemispheres, a great amount of opposite charges are accumulated on the coulomb force arc striking metal hemispheres of an inner layer by induction of lightning guide, strong coulomb force is generated, the traction effect is realized on the lightning guide, because the opposite charges induced by the lead are far lower than those of the lightning guide, the lightning is more easily attracted by the coulomb force arc striking metal hemispheres, after the electric arc enters the main body of the device, the electric arc is forcedly and physically compressed by forming angle inflection points between every two compression pipelines due to the arrangement of a spiral compression pipeline structure in the insulating arc extinguishing hemispheres, and a semi-closed space is formed in the pipe, so that temperature gradient, pressure gradient and speed gradient are formed in the pipe and outside the pipe, and jet airflow is generated at a nozzle to intercept the electric arc, and the jet of the electric arc is accelerated due to the inertia effect at the inflection points. The invention acts at the beginning of the formation of the impact arc, and the power frequency arc is in a fragile early stage of development, thereby inhibiting the development of the power frequency arc. The time for extinguishing the electric arc is faster than the relay protection action time, so the lightning trip-out rate can be greatly reduced after the invention is applied.
According to the compression temperature rise effect:
(1) The heat generation amount of the compression section is increased to cause temperature rise, compression causes serious attenuation of an electric arc, and resistance and voltage drop are increased. The absorption power of the compressed arc section becomes large under the action of the current source, and the heat generation amount and the temperature increase.
(2) The heat dissipation capacity of the compression section is reduced to cause temperature rise, the compression arc is made of heat insulation materials, the compression causes the arc to be thinned to cause the heat dissipation surface to be reduced, the energy loss channel is blocked, and the temperature rise is serious.
And then directional explosion and arc extinguishing effects according to temperature rise:
(1) The compression section has the arc temperature rise directional explosion and arc extinguishing effect, namely the compression temperature rise seriously causes the arc temperature to be higher than that of the non-compression section, and explosive expansion jet airflow is generated from the compression section to the non-compression section, so that a compression fracture effect is formed.
(2) The directional explosion airflow forms T-shaped transverse compression breaking points at the connection positions of the inflection points, namely the overall multiple zigzag compression channels, the abrupt change inflection points among the cell compression channels are formed to be T-shaped recompression channels, the direction of the directional explosion points of the electric arc is perpendicular to the electric arc, and the electric arc is effectively extinguished.
The invention has the advantages that:
1. the invention has simple and reliable structure, attracts lightning leading, and reduces the shielding failure of the metal transmission line caused by lightning interception failure. The invention acts rapidly, starts to act in the lightning impulse arc stage, stretches and thins the arc in a compression mode, and is ejected out through airflow expansion, so that the arc is cut off, the development of the power frequency arc is restrained, and the lightning trip-out rate is reduced.
2. Unlike roasting gas producing device, the present invention has long service life, and the fast quenching of arc in the most fragile period results in easy quenching failure.
3. The arc-extinguishing angle of the spherical compressed jet air flow arc-extinguishing device with coulomb force traction can compress, elongate and spray lightning current, extinguish the arc, reduce the burning of the arc to the arc-extinguishing angle contact, and ensure that the service life of the arc-extinguishing angle is longer and safer.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention (without skirt).
Fig. 2 is a schematic cross-sectional structure of a U-shaped arc extinguishing pipe according to an embodiment of the present invention.
Fig. 3 is an enlarged schematic view of a connection portion of a U-shaped arc extinguishing pipe according to an embodiment of the present invention.
Fig. 4 is a schematic view of an arc chute arrangement in an embodiment of the invention.
Fig. 5 is a schematic view of an embodiment of the present invention mounted to a arcing horn.
FIG. 6 is a schematic view of another embodiment (with skirt) of the present invention.
Fig. 7 is a schematic cross-sectional view of an arc extinguishing tube according to another embodiment of the present invention.
Fig. 8 is an enlarged schematic view of a connection part of an in-line arc extinguishing pipe according to another embodiment of the present invention.
Fig. 9 is a schematic structural view of a tee for a connector according to another embodiment of the present invention.
Fig. 10 is a schematic cross-sectional structure of the arc tube of fig. 9 using a U-shaped arc tube.
Reference numerals: the device comprises a 1-coulomb force arc striking metal hemisphere, a 2-insulation compression arc extinguishing hemisphere, a 3-airflow jet orifice, a 4-arc striking electrode, a 5-U-shaped arc extinguishing tube, a 6-connecting piece, a 7-arc guiding ring, an 8-compression cold wall tube, a 9-arc guiding ball and a 10-skirt.
Description of the embodiments
The invention will be further described with reference to the drawings and examples.
Example 1:
as shown in fig. 1-4, a coulomb force traction spherical compressed jet airflow arc extinguishing device mainly comprises an upper hemisphere and a lower hemisphere, wherein the upper hemisphere is a coulomb force arc striking metal hemisphere 1, and the lower hemisphere is an insulating compressed arc extinguishing hemisphere 2; a plurality of layers of arc extinguishing channels distributed along the circumference are arranged in the insulating compression arc extinguishing hemisphere 2, a plurality of arc extinguishing pipes are arranged in each layer of arc extinguishing channels, the last arc extinguishing pipe in the upper layer of arc extinguishing channel is electrically connected with the first arc extinguishing pipe in the lower layer of arc extinguishing channel, and the end parts of every two adjacent arc extinguishing pipes in the same layer of arc extinguishing channel are connected through a connecting piece 6; the adjacent arc extinguishing pipes close to the outer surface of the insulated compressed arc extinguishing hemisphere 2 are provided with air flow spraying channels at the joint, and the air flow spraying channels extend to the outer surface of the insulated compressed arc extinguishing hemisphere, namely the outer surface of the insulated compressed arc extinguishing hemisphere is provided with an air flow spraying port 3; an arc striking electrode 4 is arranged at the bottom of the outer surface of the insulated compression arc extinguishing hemisphere; the first arc-extinguishing tube of the first layer arc-extinguishing channel is electrically connected with the coulomb force arc-striking metal hemisphere 1, and the last arc-extinguishing tube of the last layer arc-extinguishing channel is electrically connected with the arc-striking electrode 4 at the bottom of the insulated compression arc-extinguishing hemisphere 2.
The coulomb force arc striking metal hemisphere 1 and the insulating compression arc extinguishing hemisphere 2 are fixedly installed together through a bolt component made of non-conductive materials.
The arc-extinguishing tube adopts a U-shaped arc-extinguishing tube 5; an arc guiding ball 9 and two compression cold wall pipes 8 are arranged in the U-shaped arc extinguishing pipe; the arc guiding balls 9 are arranged between the two compression cold wall pipes 8, and arc guiding rings 7 are respectively arranged at two ports of the U-shaped arc extinguishing pipe 5. The connecting piece 6 is made of metal wires.
Example 2:
this embodiment differs from embodiment 1 in that: as shown in fig. 7 and 8, the arc extinguishing tube adopts a straight arc extinguishing tube; the ends of every two adjacent straight arc extinguishing pipes far away from the outer surface of the insulated compressed arc extinguishing hemisphere are connected together through a guide arc connecting electrode; the two ends of the arc-guiding connecting electrode are respectively embedded into the linear arc-extinguishing tube. The inner part of the straight arc extinguishing pipe is provided with an arc guiding ball and two compression cold wall pipes; the arc guiding ball is arranged between the two compression cold wall pipes, and an arc guiding ring is arranged at the port of the straight arc extinguishing pipe.
Example 3:
this embodiment differs from embodiment 1 in that: as shown in fig. 6, the outer surface of the insulated compressed arc extinguishing hemisphere 2 is further provided with a skirt 10, and the skirt 10 is arranged along the arrangement direction of the air flow ejection opening 3.
Example 4:
the spherical compressed jet air flow arc extinguishing device is mainly composed of an upper hemisphere and a lower hemisphere, wherein the upper hemisphere is a coulomb force arc striking metal hemisphere, and the lower hemisphere is an insulating compressed arc extinguishing hemisphere; a plurality of layers of arc extinguishing channels which are distributed along the circumference are arranged in the insulated compressed arc extinguishing hemisphere, a plurality of arc extinguishing pipes are arranged in each layer of arc extinguishing channel, the last arc extinguishing pipe in the upper layer of arc extinguishing channel is electrically connected with the first arc extinguishing pipe in the lower layer of arc extinguishing channel, and the end parts of every two adjacent arc extinguishing pipes in the same layer of arc extinguishing channel are directly contacted and connected; the air flow spraying channels are arranged at the joints of every two adjacent arc extinguishing pipes close to the outer surface of the insulated compressed arc extinguishing hemisphere, and extend to the outer surface of the insulated compressed arc extinguishing hemisphere, namely the outer surface of the insulated compressed arc extinguishing hemisphere is provided with an air flow spraying port; an arc striking electrode is arranged at the bottom of the outer surface of the insulated compressed arc extinguishing hemisphere; the first arc-extinguishing tube of the first layer arc-extinguishing channel is electrically connected with the coulomb force arc-striking metal hemisphere, and the last arc-extinguishing tube of the last layer arc-extinguishing channel is electrically connected with the arc-striking electrode at the bottom of the insulated compression arc-extinguishing hemisphere.
The coulomb force arc striking metal hemisphere and the insulating compression arc extinguishing hemisphere are fixedly installed together through a bolt component made of non-conductive materials. When the arc-extinguishing pipes are straight-line arc-extinguishing pipes, the end parts of every two adjacent straight-line arc-extinguishing pipes far away from the outer surface of the insulated compressed arc-extinguishing hemisphere are connected together through arc-guiding connecting electrodes; the two ends of the arc-guiding connecting electrode are respectively embedded into the linear arc-extinguishing tube. The inner part of the straight arc extinguishing pipe is provided with an arc guiding ball and two compression cold wall pipes; the arc guiding ball is arranged between the two compression cold wall pipes, and an arc guiding ring is arranged at the port of the straight arc extinguishing pipe.
Example 5:
this embodiment differs from embodiment 1 in that: as shown in fig. 9 and 10, the connecting piece is a three-way pipe, and two ends of the three-way pipe are respectively provided with a guide arc connecting block; one end of the arc guide connecting block is a cylinder and extends into the three-way pipe, and the other end of the arc guide connecting block is in a ring shape and is directly connected with the end part of the arc extinguishing pipe in a contact or nested way; an air gap is arranged between the two arc-guiding connecting blocks in the three-way pipe, and the length of the air gap is just the diameter of the radial pipe of the three-way pipe.
Example 6:
a ball type arcing horn, the upper end of which is the grounding end of an insulator string, and is provided with a ball type compressed jet air flow arc extinguishing device pulled by coulomb force as in the embodiment 1; the lower end of the ball type arcing horn is the high-voltage end of the insulator string, and a ball type compressed jet air flow arc extinguishing device which is pulled by coulomb force as described in the embodiment 1 is arranged; the air gap between the upper end and the lower end of the ball-type arcing horn is smaller than the height of the insulator string.
Example 7:
a ball type arcing horn, the upper end of which is the grounding end of an insulator string, and is provided with a ball type compressed jet air flow arc extinguishing device pulled by coulomb force as in the embodiment 1; the lower end of the ball type arcing horn is the high-voltage end of the insulator string, and a high-voltage electrode is arranged; the air gap between the upper end and the lower end of the ball-type arcing horn is smaller than the height of the insulator string.
Example 8:
a ball type arcing horn, the upper end of which is the grounding end of an insulator string, and is provided with a ball type compressed jet air flow arc extinguishing device pulled by coulomb force as in the embodiment 3; the lower end of the ball type arcing horn is the high-voltage end of the insulator string, and a high-voltage electrode is arranged; the air gap between the upper end and the lower end of the ball-type arcing horn is smaller than the height of the insulator string.
Claims (10)
1. A coulomb force traction ball-type compressed jet airflow arc extinguishing device is characterized in that: the device mainly comprises an upper hemisphere and a lower hemisphere, wherein the upper hemisphere is a coulomb force arc striking metal hemisphere, and the lower hemisphere is an insulating compression arc extinguishing hemisphere; a plurality of layers of arc extinguishing channels which are arranged along the circumference are arranged in the insulated compressed arc extinguishing hemisphere, a plurality of arc extinguishing pipes are arranged in each layer of arc extinguishing channel, the last arc extinguishing pipe in the upper layer of arc extinguishing channel is electrically connected with the first arc extinguishing pipe in the lower layer of arc extinguishing channel, and the end parts of every two adjacent arc extinguishing pipes in the same layer of arc extinguishing channel are directly in touch connection or are connected through connecting pieces; the air flow spraying channels are arranged at the joints of every two adjacent arc extinguishing pipes close to the outer surface of the insulated compressed arc extinguishing hemisphere, and extend to the outer surface of the insulated compressed arc extinguishing hemisphere, namely the outer surface of the insulated compressed arc extinguishing hemisphere is provided with an air flow spraying port; an arc striking electrode is arranged at the bottom of the outer surface of the insulated compressed arc extinguishing hemisphere; the first arc-extinguishing tube of the first layer arc-extinguishing channel is electrically connected with the coulomb force arc-striking metal hemisphere, and the last arc-extinguishing tube of the last layer arc-extinguishing channel is electrically connected with the arc-striking electrode at the bottom of the insulated compression arc-extinguishing hemisphere.
2. The coulomb force-towed ball-type compressed jet flow arc extinguishing device of claim 1, wherein: the coulomb force arc striking metal hemisphere and the insulating compression arc extinguishing hemisphere are fixedly installed together through a bolt component made of non-conductive materials.
3. The coulomb force-towed ball-type compressed jet flow arc extinguishing device of claim 1, wherein: the arc-extinguishing tube adopts a U-shaped arc-extinguishing tube or a straight arc-extinguishing tube.
4. A coulomb force-towed ball-type compressed jet flow arc extinguishing device according to claim 3, characterized in that: an arc guiding ball and two compression cold wall pipes are arranged in the U-shaped arc extinguishing pipe; the arc guiding ball is arranged between the two compression cold wall pipes, and arc guiding rings are respectively arranged at two ports of the U-shaped arc extinguishing pipe.
5. A coulomb force-towed ball-type compressed jet flow arc extinguishing device according to claim 3, characterized in that: when the arc-extinguishing pipes adopt straight arc-extinguishing pipes, the end parts of every two adjacent straight arc-extinguishing pipes far away from the outer surface of the insulated compressed arc-extinguishing hemisphere are connected together through arc-guiding connecting electrodes; the two ends of the arc-guiding connecting electrode are respectively embedded into the linear arc-extinguishing tube.
6. The coulomb force-towed ball-type compressed jet flow arc extinguishing device of claim 5, wherein: the inner part of the straight arc extinguishing pipe is provided with an arc guiding ball and two compression cold wall pipes; the arc guiding ball is arranged between the two compression cold wall pipes, and an arc guiding ring is arranged at the port of the straight arc extinguishing pipe.
7. The coulomb force-towed ball-type compressed jet flow arc extinguishing device of claim 1, wherein: the connecting piece adopts a metal sheet or a metal wire or a three-way pipe, or the metal sheet, the metal wire and the three-way pipe are combined in pairs, or the metal sheet, the metal wire and the three-way pipe are all used.
8. The coulomb force-towed ball-type compressed jet flow arc extinguishing device of claim 7, wherein: when the connecting piece adopts a three-way pipe, two ends of the three-way pipe are respectively provided with a guide arc connecting block; one end of the arc guide connecting block is a cylinder and extends into the three-way pipe, and the other end of the arc guide connecting block is in a ring shape and is directly connected with the end part of the arc extinguishing pipe in a contact manner; an air gap is arranged between the two arc-guiding connecting blocks in the three-way pipe, and the length of the air gap is just the diameter of the radial pipe of the three-way pipe.
9. The coulomb force-towed ball-type compressed jet flow arc extinguishing device according to any of claims 1-8, wherein: the outer surface of the insulating compression arc extinguishing hemisphere is also provided with a skirt edge, and the skirt edge is arranged along the arrangement direction of the airflow ejection opening.
10. The utility model provides a ball formula is taken in arc angle which characterized in that: the upper end of the ball-type arcing horn is an insulator string grounding end, and a coulomb force-traction ball-type compressed jet airflow arc extinguishing device as set forth in any one of claims 1-9 is installed; the lower end of the ball-type arcing horn is the high-voltage end of the insulator string, and is provided with a high-voltage electrode or a coulomb force traction ball-type compressed jet airflow arc extinguishing device as claimed in any one of claims 1-9; the air gap between the upper end and the lower end of the ball-type arcing horn is smaller than the height of the insulator string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710825527.1A CN107732663B (en) | 2017-09-14 | 2017-09-14 | Coulomb force traction ball-type compressed jet airflow arc extinguishing device and ball-type arcing horn |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710825527.1A CN107732663B (en) | 2017-09-14 | 2017-09-14 | Coulomb force traction ball-type compressed jet airflow arc extinguishing device and ball-type arcing horn |
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| Publication Number | Publication Date |
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| CN107732663A CN107732663A (en) | 2018-02-23 |
| CN107732663B true CN107732663B (en) | 2023-06-02 |
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| CN201710825527.1A Active CN107732663B (en) | 2017-09-14 | 2017-09-14 | Coulomb force traction ball-type compressed jet airflow arc extinguishing device and ball-type arcing horn |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360698B (en) * | 2018-11-07 | 2023-10-03 | 南宁超伏电气科技有限公司 | Arc extinguishing device capable of being installed on insulator string in nested mode |
| CN211238811U (en) * | 2019-06-20 | 2020-08-11 | 南宁超伏电气科技有限公司 | Multistage recoil arc control device of low-voltage system |
| CN112117642B (en) * | 2019-06-20 | 2023-04-25 | 王嬿蕾 | Structure for extinguishing arc plasma by multi-tube recoil |
| CN110611245B (en) * | 2019-10-16 | 2023-10-24 | 南宁超伏电气科技有限公司 | Recoil compression combined arc extinguishing method and device |
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| CN103594210A (en) * | 2013-11-13 | 2014-02-19 | 王巨丰 | Multi-gap self-swelling strong-air-current longitudinal blow-out arc anti-thunder protecting device |
| CN103871696A (en) * | 2014-03-26 | 2014-06-18 | 王嬿蕾 | Self-arc-extinguishing anti-contamination anti-icing-flashover insulator |
| CN207426401U (en) * | 2017-09-14 | 2018-05-29 | 王巨丰 | The ball-type compression injection air-flow arc-control device and ball-type arcing horn of Coulomb force traction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103594210A (en) * | 2013-11-13 | 2014-02-19 | 王巨丰 | Multi-gap self-swelling strong-air-current longitudinal blow-out arc anti-thunder protecting device |
| CN103871696A (en) * | 2014-03-26 | 2014-06-18 | 王嬿蕾 | Self-arc-extinguishing anti-contamination anti-icing-flashover insulator |
| CN207426401U (en) * | 2017-09-14 | 2018-05-29 | 王巨丰 | The ball-type compression injection air-flow arc-control device and ball-type arcing horn of Coulomb force traction |
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| CN107732663A (en) | 2018-02-23 |
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