CN110504559B - Electric power busbar - Google Patents
Electric power busbar Download PDFInfo
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- CN110504559B CN110504559B CN201910798837.8A CN201910798837A CN110504559B CN 110504559 B CN110504559 B CN 110504559B CN 201910798837 A CN201910798837 A CN 201910798837A CN 110504559 B CN110504559 B CN 110504559B
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- Prior art keywords
- busbar body
- busbar
- power
- fixing
- heat
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- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 61
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910052802 copper Inorganic materials 0.000 claims abstract description 59
- 239000010949 copper Substances 0.000 claims abstract description 59
- 239000012212 insulator Substances 0.000 claims abstract description 21
- 238000002955 isolation Methods 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 229910001562 pearlite Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 23
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 239000000428 dust Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 13
- 238000009413 insulation Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 235000019362 perlite Nutrition 0.000 description 3
- 239000010451 perlite Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
- H01R11/09—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
- H01R4/505—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using an excentric element
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/10—Cooling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
Landscapes
- Insulators (AREA)
- Resistance Heating (AREA)
Abstract
The invention belongs to the technical field of power engineering, and particularly relates to a power busbar which comprises a busbar body; a power porcelain bottle is arranged in the middle of the busbar body, and a fixing screw is arranged at one end of the power porcelain bottle close to the busbar body; fixing holes are formed in the busbar body and are aligned with the fixing screws, and the fixing screws are matched with the fixing holes to position the busbar body; the fixed screw is in threaded connection with a nut for fixing the busbar body; copper plates are arranged on two sides of the busbar body close to the fixing screws and used for reducing the resistance of the busbar body at the corresponding position of the power porcelain insulator; the fixing screw penetrates through the through hole in the copper plate and then is matched with the nut; according to the invention, the copper plates are additionally arranged on two sides of the busbar body, so that the resistance of the busbar body at the position is reduced, the heating temperature is reduced when current flows through the busbar body, the temperature of water vapor near the busbar body is not raised, and then the water vapor is precooled and liquefied on the power porcelain insulator, so that the insulating property of the power porcelain insulator is reduced.
Description
Technical Field
The invention belongs to the technical field of power engineering, and particularly relates to a power busbar.
Background
The bus bar is a connecting copper bar or aluminum bar of a main switch in an electric cabinet and a switch in each shunt circuit in a power supply system, and the surface of the bus bar is subjected to insulation treatment and mainly used as a lead.
The busbar is also called as a busbar sometimes and is the name of a conductive material on power distribution equipment, flat copper (equivalent to a wire) is made of materials, an insulating layer is not arranged, paint with colors for representing phase sequence is brushed outside the busbar, and the busbar is mainly used for connecting an indoor transformer to a power distribution cabinet, then to a power supply main gate and then to each separating gate.
The high-voltage switch cabinet is generally used for power generation, power transmission, power distribution, electric energy conversion and consumption of an electric power system and mainly plays roles of on-off, control and protection, the high-voltage switch cabinet is classified according to the voltage level, the voltage level is 3.6kV-550kV, and the voltage level of the low-voltage switch cabinet is 380V-660V. Copper/aluminum bars are often used on power switch cabinets.
Female row can send the heat when carrying out the power transmission use in the switch board, and the heat transfer makes the vapor temperature in the air rise after arranging near the air for female, liquefies into the drop of water on the electric power vase easily when the higher vapor of temperature meets the lower electric power vase of temperature, can reduce the insulating properties of electric power vase behind the dust on the drop of water mixed electric power vase, makes the insulating protection of electric current breakdown electric power vase on female row easily, causes the potential safety hazard.
Disclosure of Invention
In order to make up the defects of the prior art, the problem that when the busbar is used for power transmission in a power distribution cabinet, heat can be generated, the temperature of water vapor in the air is increased after the heat is transferred to the air near the busbar, when the water vapor with higher temperature meets a power porcelain bottle with lower temperature, the water vapor is easily liquefied into water drops on the power porcelain bottle, the insulating property of the power porcelain bottle can be reduced after the water drops are mixed with dust on the power porcelain bottle, the current on the busbar can easily puncture the insulating protection of the power porcelain bottle, and the potential safety hazard is caused is solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a power bus, which comprises a bus body; a power porcelain bottle is arranged in the middle of the busbar body, and a fixing screw is arranged at one end of the power porcelain bottle close to the busbar body; fixing holes are formed in the busbar body at positions corresponding to the fixing screws, and the fixing screws are matched with the fixing holes to position the busbar body; the fixed screw is in threaded connection with a nut for fixing the busbar body; copper plates are arranged on two sides of the busbar body close to the fixing screws and used for reducing the resistance of the busbar body at the corresponding position of the power porcelain insulator; the fixing screw penetrates through the through hole in the copper plate and then is matched with the nut; when in use, after the busbar body is electrified, the copper plates are arranged on the two sides of the busbar body close to the power porcelain bottle, so that the conductive sectional area of the busbar body close to the power porcelain bottle is increased, the resistance of the busbar body at the position is reduced, the heating temperature is reduced when current flows through the busbar body, the cost of copper materials consumed by the busbar body is reduced, meanwhile, the temperature rise of the busbar body close to the power porcelain bottle is not obvious when the busbar body is electrified, the temperature difference between the power porcelain bottle and the busbar body at the position corresponding to the power porcelain bottle is reduced, the water vapor near the busbar body is precooled and liquefied on the power porcelain bottle after the temperature of the water vapor is not raised, the insulating property of dust in the liquefied water vapor mixed air and impurities attached on the power porcelain bottle is reduced, the current on the busbar body breaks through the power porcelain bottle, and the short-time insulating property of the power, finally, the effective insulation effect of the power porcelain insulator is guaranteed, and the safe and normal work of the busbar body is guaranteed.
Preferably, arc chamfers are arranged at two ends of the copper plate and are used for reducing point discharge of the copper plate; the arc chamfer can reduce sharp-pointed convex arris and the closed angle at copper both ends for female the body of arranging reduces the point discharge phenomenon at copper both ends carrying high pressure or extra-high voltage current, further guarantees that female the body of arranging has good insulating properties, prevents to cause serious damage to maintainer and power transmission and transformation equipment after the point discharge punctures the air, improves the life who arranges the body.
Preferably, the middle part of the copper plate is sleeved with an arc-extinguishing shield, the inner wall of the arc-extinguishing shield is provided with a group of insulating grids, and the arc-extinguishing shield is matched with the insulating grids for reducing point discharge at the nut; because female body of arranging is fixed through fastening bolt and nut and electric power vase, and the nut has the structure of hexagonal, has more edges and corners and closed angle, adopts the insulating grid of arc-extinguish chamber cooperation this moment can with block the point discharge length of nut to reduce point discharge's electric arc length, prevent that the nut from puncturing the air and causing bigger potential safety hazard because of leading to the point discharge's that has the high-tension electricity to produce electric arc.
Preferably, the side wall of the arc-extinguishing chamber is provided with an isolation cavity, and perlite particles for heat insulation are filled in the isolation cavity; be equipped with in the arc-extinguish chamber and keep apart the chamber, further reduced female heat transfer who sends of arranging the body to the electric power vase on, thereby reduce the comdenstion water on the electric power vase, the pearlite granule of packing has fine thermal-insulated effect in keeping apart the chamber simultaneously, further block the difference in temperature between female arranging the body and the electric power vase, and then the difference in temperature that the heating air formed when reducing the female arranging the body circular telegram of electric power vase corresponding position, further reduce the comdenstion water on the electric power vase, guarantee the good insulating nature of electric power vase.
Preferably, a heat-shrinkable tube is sleeved on the busbar body outside the arc extinguishing chamber, an isolation layer is sleeved on the heat-shrinkable tube, and a metal isolation net is arranged in the isolation layer; the metal isolation net and the arc extinguishing chamber are both effectively grounded; one side of the copper plate, which is close to the busbar body 1, is provided with knurling patterns to increase effective contact with the busbar body 1; through the grounding of the metal isolation net, a magnetic field generated when current flows through the busbar body is well shielded, and then induction current generated by the cabinet body where the busbar body is located is reduced, so that heating generated due to the induction current in the cabinet body is reduced, and the service life of rubber insulation components in the cabinet body is shortened.
Preferably, one end of the heat-shrinkable tube close to the arc extinguishing chamber is sleeved with an elastic ring; a cavity is arranged in the heat-shrinkable tube at one side of the elastic ring, which is far away from the arc extinguishing chamber; adhesive sticker is coated between the heat-shrinkable tube at the corresponding position of the elastic ring and the busbar body; when the busbar body generates heat due to current flowing through the busbar body, the heat emitted by the busbar body heats the air in the cavity, so that the air in the cavity expands to a certain degree and breaks the sealing effect of the elastic ring on the cavity, compressed air is sprayed out from one end, close to the copper plate, of the heat shrinkage pipe, dust deposited on the copper plate and the arc chamfer angle on the copper plate is blown away, and potential safety hazards caused by the fact that the dust and the air are broken through by the current flowing through the busbar body due to excessive dust deposition are reduced; meanwhile, the self-adhesive sticker coated between the heat-shrinkable tube at the corresponding position of the elastic ring and the busbar body can increase the sealing performance of the cavity, so that the speed of compressed air in the cavity is increased, the cleaning effect of dust on the copper plate is further increased, and after the air in the cavity is sprayed out, the elastic ring is matched with the self-adhesive sticker to seal the cavity again, so that compressed gas is repeatedly generated in the cavity, and the cleanliness of the copper plate is guaranteed.
The invention has the following beneficial effects:
1. according to the electric bus, the copper plates are arranged on the two sides of the bus body close to the electric porcelain insulator, so that the conductive sectional area of the bus body close to the electric porcelain insulator is increased, the resistance of the bus body at the position is reduced, the heating temperature is reduced when current flows through the bus body, the cost of copper materials consumed by the bus body is reduced, the temperature difference between the electric porcelain insulator and the bus body at the position corresponding to the electric porcelain insulator is reduced, the current on the bus body breaks through the electric porcelain insulator after the temperature of water vapor near the bus body does not rise, and safety accidents such as electric shock are reduced, and the bus body is guaranteed to work safely and normally.
2. According to the electric bus, the sharp convex edges and sharp corners at two ends of the copper plate can be reduced through the arc chamfers, so that the point discharge phenomenon at two ends of the copper plate is reduced when the bus body transmits high-voltage or extra-high-voltage current, the bus body is further ensured to have good insulating property, the serious damage to maintainers and power transmission and transformation equipment after the point discharge breaks through air is prevented, and the service life of the bus body is prolonged.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a structural view of a copper plate in the present invention;
in the figure: the bus bar comprises a bus bar body 1, a power porcelain bottle 2, a fixing screw 3, a nut 4, a copper plate 5, a through hole 6, an arc chamfer 7, an arc extinguishing cover 8, an insulating grid 9, an isolation cavity 10, a heat shrinkable tube 11, an isolation layer 12, a metal isolation net 13, a knurling pattern 14, an elastic ring 15 and a cavity 16.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the power busbar according to the present invention includes a busbar body 1; a power porcelain bottle 2 is arranged in the middle of the busbar body 1, and a fixing screw 3 is arranged at one end of the power porcelain bottle 2 close to the busbar body 1; fixing holes are formed in the busbar body 1 at positions corresponding to the fixing screws 3, and the fixing screws 3 are matched with the fixing holes to position the busbar body 1; the fixing screw 3 is in threaded connection with a nut 4 for fixing the busbar body 1; copper plates 5 are arranged on two sides of the busbar body 1 close to the fixing screws 3, and the copper plates 5 are used for reducing the resistance of the busbar body 1 at the corresponding position of the power porcelain insulator 2; the fixing screw 3 penetrates through the through hole 6 on the copper plate 5 and then is matched with the nut 4; when in use, after the busbar body 1 is electrified, the copper plates 5 are arranged on two sides of the busbar body 1 close to the power porcelain bottle 2, so that the conductive sectional area of the busbar body 1 close to the power porcelain bottle 2 is increased, the resistance of the busbar body 1 at the position is reduced, the heating temperature is reduced when current flows through the busbar body 1, the cost of copper materials consumed by the busbar body 1 is reduced, meanwhile, the temperature rise of the busbar body 1 close to the power porcelain bottle 2 is not obvious when the busbar body is electrified, the temperature difference between the power porcelain bottle 2 and the power porcelain bottle 2 corresponding to the busbar body 1 is reduced, the water vapor temperature near the busbar body 1 is not raised and then precooled and liquefied on the power porcelain bottle 2, the insulating property of dust in liquefied water vapor mixed air and impurities attached on the power porcelain bottle 2 is reduced, the current on the busbar body 1 punctures the power porcelain bottle 2, the insulating property of the power porcelain bottle 2 is very easy to cause safety accidents such as electric shock, finally, the effective insulation effect of the power porcelain insulator 2 is ensured, and the safe and normal work of the busbar body 1 is ensured.
As an embodiment of the invention, the two ends of the copper plate 5 are provided with arc chamfers 7, and the arc chamfers 7 are used for reducing the point discharge of the copper plate 5; the arc chamfer 7 can reduce sharp-pointed convex edges and sharp corners at two ends of the copper plate 5, so that the busbar body 1 can reduce the point discharge phenomenon at two ends of the copper plate 5 when transmitting high voltage or extra-high voltage current, the busbar body 1 is further ensured to have good insulating property, serious damage to maintainers and power transmission and transformation equipment after the point discharge breakdown of air is prevented, and the service life of the busbar body 1 is prolonged.
As an embodiment of the invention, an arc-extinguishing chamber 8 is sleeved in the middle of the copper plate 5, a group of insulating grids 9 is arranged on the inner wall of the arc-extinguishing chamber 8, and the arc-extinguishing chamber 8 is matched with the insulating grids 9 for reducing point discharge at the nut 4; because female body 1 of arranging fixes through fastening bolt and nut 4 and electric power vase 2, and nut 4 has the structure of hexagonal, has more edges and corners and closed angle, adopts arc-extinguishing cover 8 cooperation insulating grid 9 this moment can with block the point discharge length of nut 4 to reduce point discharge's electric arc length, prevent that nut 4 from puncturing the air and causing bigger potential safety hazard because of leading to the electric arc that has the point discharge of high-tension electricity production.
As an embodiment of the invention, the side wall of the arc extinguishing chamber 8 is provided with an isolation cavity 10, and the isolation cavity 10 is filled with perlite particles for heat insulation; be equipped with in arc-extinguish chamber 8 and keep apart chamber 10, further reduced female heat transfer who sends of arranging body 1 to electric power vase 2 on, thereby reduce the comdenstion water on the electric power vase 2, keep apart the pearlite granule that fills in the chamber 10 simultaneously and have fine thermal-insulated effect, further block the difference in temperature between female arranging body 1 and the electric power vase 2, and then reduce the difference in temperature that heated air formed when female arranging body 1 circular telegram of electric power vase 2 corresponding position, further reduce the comdenstion water on the electric power vase 2, guarantee electric power vase 2's good insulating nature.
As an embodiment of the invention, a heat-shrinkable tube 11 is sleeved on the busbar body 1 outside the arc-extinguishing chamber 8, an isolation layer 12 is sleeved on the heat-shrinkable tube 11, and a metal isolation net 13 is arranged in the isolation layer 12; the metal isolation net 13 and the arc extinguishing chamber 8 are both effectively grounded; one side of the copper plate 5 close to the busbar body 1 is provided with a knurling pattern 14 to increase effective contact with the busbar body 1; through the grounding of the metal isolation net 13, the magnetic field generated when current flows in the busbar body 1 is well shielded, and then the cabinet body where the busbar body 1 is located is reduced to generate induced current, so that the heating generated by the induced current in the cabinet body is reduced, and the service life of rubber insulation components in the cabinet body is shortened.
As an embodiment of the present invention, an elastic ring 15 is sleeved on one end of the heat shrinkable tube 11 close to the arc extinguishing chamber 8; a cavity 16 is arranged in the heat-shrinkable tube 11 at one side of the elastic ring 15, which is far away from the arc extinguishing chamber 8; adhesive sticker is coated between the heat-shrinkable tube 11 at the position corresponding to the elastic ring 15 and the busbar body 1; when the busbar body 1 generates heat due to flowing current, the air in the cavity 16 is heated by the heat emitted by the busbar body 1, so that the air in the cavity 16 expands to a certain degree and breaks the sealing effect of the elastic ring 15 on the cavity 16, compressed air is sprayed out from one end of the heat-shrinkable tube 11 close to the copper plate 5, dust deposited on the copper plate 5 and the arc chamfer 7 on the copper plate 5 is blown away, and potential safety hazards caused by the fact that the dust and the air are broken through by the current flowing through the busbar body 1 due to excessive dust deposition are reduced; meanwhile, the self-adhesive sticker coated between the heat-shrinkable tube 11 at the position corresponding to the elastic ring 15 and the busbar body 1 can increase the sealing performance of the cavity 16, further increase the spraying speed of compressed air in the cavity 16, further increase the cleaning effect of dust on the copper plate 5, and after the air in the cavity 16 is sprayed out, the elastic ring 15 is matched with the self-adhesive sticker to seal the cavity 16 again, so that the cavity 16 repeatedly generates compressed air, and the cleanliness of the copper plate 5 is ensured.
When in use, after the busbar body 1 is electrified, the copper plates 5 are arranged on two sides of the busbar body 1 close to the power porcelain bottle 2, so that the conductive sectional area of the busbar body 1 close to the power porcelain bottle 2 is increased, the resistance of the busbar body 1 at the position is reduced, the heating temperature is reduced when current flows through the busbar body 1, the cost of copper materials consumed by the busbar body 1 is reduced, meanwhile, the temperature rise of the busbar body 1 close to the power porcelain bottle 2 is not obvious when the busbar body is electrified, the temperature difference between the power porcelain bottle 2 and the power porcelain bottle 2 corresponding to the busbar body 1 is reduced, the water vapor temperature near the busbar body 1 is not raised and then precooled and liquefied on the power porcelain bottle 2, the insulating property of dust in liquefied water vapor mixed air and impurities attached on the power porcelain bottle 2 is reduced, the current on the busbar body 1 punctures the power porcelain bottle 2, the insulating property of the power porcelain bottle 2 is very easy to cause safety accidents such as electric shock, finally, the effective insulation effect of the power porcelain insulator 2 is ensured, and the safe and normal work of the busbar body 1 is ensured; the arc chamfer 7 can reduce sharp convex edges and sharp corners at two ends of the copper plate 5, so that the point discharge phenomenon at two ends of the copper plate 5 is reduced when the busbar body 1 transmits high-voltage or extra-high-voltage current, the busbar body 1 is further ensured to have good insulating property, serious damage to maintainers and power transmission and transformation equipment after the point discharge breaks through air is prevented, and the service life of the busbar body 1 is prolonged; because the bus bar body 1 is fixed with the power porcelain insulator 2 through the fastening bolt and the nut 4, and the nut 4 has a hexagonal structure, more edges and corners exist, the arc extinguishing cover 8 is adopted to match with the insulating grid 9 to block the point discharge length of the nut 4, the arc length of the point discharge is reduced, and the greater potential safety hazard caused by the fact that the nut 4 is charged with arc breakdown air of the point discharge generated by high voltage electricity is prevented; the arc extinguishing chamber 8 is internally provided with the isolation cavity 10, so that heat emitted by the busbar body 1 is further reduced to be transferred to the power porcelain insulator 2, condensed water on the power porcelain insulator 2 is reduced, meanwhile, perlite particles filled in the isolation cavity 10 have a good heat insulation effect, the temperature difference between the busbar body 1 and the power porcelain insulator 2 is further blocked, the temperature difference formed by heating air when the busbar body 1 at the corresponding position of the power porcelain insulator 2 is electrified is further reduced, the condensed water on the power porcelain insulator 2 is further reduced, and good insulativity of the power porcelain insulator 2 is ensured; through the grounding of the metal isolation net 13, a magnetic field generated when current flows in the busbar body 1 is well shielded, so that induced current generated by a cabinet body where the busbar body 1 is located is reduced, the heating generated by the induced current in the cabinet body is reduced, and the service life of rubber insulation components in the cabinet body is shortened; when the busbar body 1 generates heat due to flowing current, the air in the cavity 16 is heated by the heat emitted by the busbar body 1, so that the air in the cavity 16 expands to a certain degree and breaks the sealing effect of the elastic ring 15 on the cavity 16, compressed air is sprayed out from one end of the heat-shrinkable tube 11 close to the copper plate 5, dust deposited on the copper plate 5 and the arc chamfer 7 on the copper plate 5 is blown away, and potential safety hazards caused by the fact that the dust and the air are broken through by the current flowing through the busbar body 1 due to excessive dust deposition are reduced; meanwhile, the self-adhesive sticker coated between the heat-shrinkable tube 11 at the position corresponding to the elastic ring 15 and the busbar body 1 can increase the sealing performance of the cavity 16, further increase the spraying speed of compressed air in the cavity 16, further increase the cleaning effect of dust on the copper plate 5, and after the air in the cavity 16 is sprayed out, the elastic ring 15 is matched with the self-adhesive sticker to seal the cavity 16 again, so that the cavity 16 repeatedly generates compressed air, and the cleanliness of the copper plate 5 is ensured.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A power bus bar is characterized in that: comprises a busbar body (1); a power porcelain bottle (2) is arranged in the middle of the busbar body (1), and a fixing screw (3) is arranged at one end, close to the busbar body (1), of the power porcelain bottle (2); fixing holes are formed in the busbar body (1) at positions corresponding to the fixing screws (3), and the fixing screws (3) are matched with the fixing holes to position the busbar body (1); the fixing screw (3) is in threaded connection with a nut (4) for fixing the busbar body (1); copper plates (5) are arranged on two sides, close to the fixing screws (3), of the busbar body (1), and the copper plates (5) are used for reducing the resistance of the busbar body (1) at the corresponding position of the power porcelain insulator (2); the fixing screw (3) penetrates through the through hole (6) in the copper plate (5) and then is matched with the nut (4);
arc chamfers (7) are arranged at two ends of the copper plate (5), and the arc chamfers (7) are used for reducing point discharge of the copper plate (5);
the middle of the copper plate (5) is sleeved with an arc extinguishing cover (8), the inner wall of the arc extinguishing cover (8) is provided with a group of insulating grids (9), and the arc extinguishing cover (8) is matched with the insulating grids (9) and used for reducing point discharge at the nut (4).
2. The power busbar according to claim 1, wherein: the arc extinguishing chamber (8) lateral wall is equipped with keeps apart chamber (10), keeps apart and is filled with the pearlite granule that is used for thermal-insulated in chamber (10).
3. A power bus bar according to claim 2, wherein: a heat-shrinkable tube (11) is sleeved on the busbar body (1) outside the arc extinguishing cover (8), an isolation layer (12) is sleeved on the heat-shrinkable tube (11), and a metal isolation net (13) is arranged in the isolation layer (12); the metal isolation net (13) and the arc extinguishing cover (8) are both effectively grounded; one side that copper (5) are close to female body (1) of arranging is equipped with knurling decorative pattern (14), increases the effective contact with female body (1) of arranging.
4. A power bus bar according to claim 3, wherein: an elastic ring (15) is sleeved at one end of the heat-shrinkable tube (11) close to the arc extinguishing chamber (8); a cavity (16) is arranged in the heat-shrinkable tube (11) at one side of the elastic ring (15) far away from the arc extinguishing cover (8); adhesive sticker is coated between the heat-shrinkable tube (11) at the corresponding position of the elastic ring (15) and the busbar body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910798837.8A CN110504559B (en) | 2019-08-28 | 2019-08-28 | Electric power busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910798837.8A CN110504559B (en) | 2019-08-28 | 2019-08-28 | Electric power busbar |
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| Publication Number | Publication Date |
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| CN110504559A CN110504559A (en) | 2019-11-26 |
| CN110504559B true CN110504559B (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910798837.8A Active CN110504559B (en) | 2019-08-28 | 2019-08-28 | Electric power busbar |
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| JPH09140010A (en) * | 1995-11-10 | 1997-05-27 | Fuji Electric Co Ltd | Bus support |
| JP2007060873A (en) * | 2005-08-26 | 2007-03-08 | Toshiba Corp | Dew condensation preventing device for enclosed switchboard |
| CN200976468Y (en) * | 2006-08-14 | 2007-11-14 | 河南森源电气股份有限公司 | Device for fixing bus to support insulator |
| CN101752803A (en) * | 2009-12-12 | 2010-06-23 | 天水长城开关厂有限公司 | Insulating sleeve for incoming lines and outgoing lines of high-voltage switch equipment |
| CN102801126A (en) * | 2012-08-06 | 2012-11-28 | 正泰电气股份有限公司 | Device capable of reducing heat productivity at lapping surface of buses |
| CN206180140U (en) * | 2016-09-23 | 2017-05-17 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Device for connecting anode reactor wiring board and generating line copper bar |
| CN108550445A (en) * | 2018-05-08 | 2018-09-18 | 河南森源电气股份有限公司 | A kind of electrification shows support insulator and switchgear |
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2019
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09140010A (en) * | 1995-11-10 | 1997-05-27 | Fuji Electric Co Ltd | Bus support |
| JP2007060873A (en) * | 2005-08-26 | 2007-03-08 | Toshiba Corp | Dew condensation preventing device for enclosed switchboard |
| CN200976468Y (en) * | 2006-08-14 | 2007-11-14 | 河南森源电气股份有限公司 | Device for fixing bus to support insulator |
| CN101752803A (en) * | 2009-12-12 | 2010-06-23 | 天水长城开关厂有限公司 | Insulating sleeve for incoming lines and outgoing lines of high-voltage switch equipment |
| CN102801126A (en) * | 2012-08-06 | 2012-11-28 | 正泰电气股份有限公司 | Device capable of reducing heat productivity at lapping surface of buses |
| CN206180140U (en) * | 2016-09-23 | 2017-05-17 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Device for connecting anode reactor wiring board and generating line copper bar |
| CN108550445A (en) * | 2018-05-08 | 2018-09-18 | 河南森源电气股份有限公司 | A kind of electrification shows support insulator and switchgear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110504559A (en) | 2019-11-26 |
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