CN102214535B - Cut-off bridge body with exploding discharging contact - Google Patents
Cut-off bridge body with exploding discharging contact Download PDFInfo
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- CN102214535B CN102214535B CN 201110135698 CN201110135698A CN102214535B CN 102214535 B CN102214535 B CN 102214535B CN 201110135698 CN201110135698 CN 201110135698 CN 201110135698 A CN201110135698 A CN 201110135698A CN 102214535 B CN102214535 B CN 102214535B
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- current
- slide block
- contact arm
- carrying slide
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Abstract
The invention discloses a cut-off bridge body with an exploding discharging contact. Strong impact force produced during explosive explosion is utilized to push a piston to impact current-carrying slide blocks on an upper static contact and a lower static contact to rapidly move down and be rapidly located in a cone inner bore barrel, thus a path is disconnected and the aims of rapidly cutting off heavy current and protecting equipment are achieved. In the invention, usage of the explosive is low, vibration is small and noise is low when a task is executed, arc is easy to extinguish, short-circuit current is cut off at a position 30% before a first current peak (half wave of anticipated short circuit) when the short-circuit current comes, and time of about 1.5ms is consumed; and the cut-off bridge body has the advantages of high explosion safety, strong reliability, and zero risk in operation.
Description
Technical field
The present invention relates to electrical protection apparatus, the great current quick-speed turning on-off pontic in the heavy current rapid on-off apparatus especially is specially a kind of quick-fried contact pontic that dams that unloads.
Background technology
Continuous quickening along with industrial development and urbanization process, national economy and town and country power load are increasing, original electrical power trans mission/distribution system causes electric power system problem (the system short-circuit electric current is excessive, can cause the problems such as equipment damage, production pause) to occur frequently because the technical performance of product is not enough.
According to the electric power system universal law, not most economical with its cut-out during peaking at short circuit current, the most reliable scheme, at present, the heavy current rapid on-off apparatus that generally uses on the market all is by quick-speed turning on-off pontic interrupting short circuit, but this pontic is normally used be: explosive bag in the tubular metal busbar, or be sidelong at plate-shape metal busbar one and put the little blasting charge, place little blasting charge quick-speed turning on-off body structure in the tubular metal busbar of original technology substantially as shown in Figure 1, plate-shape metal busbar one is sidelong and is put little blasting charge quick-speed turning on-off body structure substantially as shown in Figure 2.Must quick-fried disconnected busbar during explosive charge, and must all be turned to certain angle by fried, otherwise be cut-off unsuccessful.The problem that this mode of cut-offfing exists: one, difficulty is high; Two, need sizable explosion power, and vibration and sound are excessive; Three, because in the conductor implode, the moment that the Heat of Formation of explosion time explosive and the combustion heat cause conductor directly to be blown, incision position can produce some the unordered metal fragment that dances in the air or powder, and these metal fragments still can conduct electricity under high-tension effect, arcing, causes and can't cut-off; Even if it is fast that four conductors are blown again, wire chamber also still has the process of tearing, and the fracture of blowing is also smooth like that neat not as artificial, and this is unfavorable to the arc extinguishing in the interrupting process.
Summary of the invention
The purpose of this invention is to provide a kind of quick-fried contact pontic that dams that unloads, excessive to solve the brisance that the prior art mode of cut-offfing needs, and easily cause chip or powder to be difficult to the problem of arc extinguishing.
In order to achieve the above object, the technical solution adopted in the present invention is:
The quick-fried contact pontic that dams that unloads, include, lower contact arm, and be enclosed within, lower contact arm is outer with on fixing, the epoxy cylinder of lower contact arm, be connected with the connection copper bar above the described upper contact arm, be connected with lower connection copper bar below the lower contact arm, it is characterized in that: also include the current-carrying slide block, described current-carrying upper end of slide block is positioned at epoxy cylinder and the upper end fixed contact contact that is installed on the contact arm hugs, described current-carrying slide block lower end passes lower contact arm and the lower end fixed contact contact that is installed on the lower contact arm hugs, be positioned at sliding cavity also is installed on the contact arm, the sliding chamber of described sliding cavity communicates with epoxy cylinder inside, the top, sliding chamber of sliding cavity is fixed with the blast cavity, be placed with explosive in the blast cavity, be provided with the piston by sliding chamber guiding in the sliding chamber of sliding cavity, the impulsive force pushing piston lower end bump current-carrying slide block that produces behind the explosive charge in the described blast cavity makes the current-carrying slide block break away from upper end fixed contact contact, the lower end falls behind the fixed contact contact location.
The described quick-fried contact pontic that dams that unloads, it is characterized in that: also be fixed with cylindrical shell on the described lower connection copper bar, described cylindrical shell has taper inner, and the cylindrical shell lower end is small-bore nozzle end, the cylindrical shell upper end is large aperture nozzle end, and described cylindrical shell covers on outside the fixed contact contact of lower end by the cylindrical shell upper end.
The described quick-fried contact pontic that dams that unloads, it is characterized in that: described current-carrying slide block is for being waney step cylinder, and the upper end of current-carrying slide block is smaller diameter end, and the lower end of current-carrying slide block is larger diameter end.
The described quick-fried contact pontic that dams that unloads, it is characterized in that: the bottom, sliding chamber of described sliding cavity is shaped to the bottleneck shape, and described piston is T shape, and the bottom, sliding chamber by the bottleneck shape cooperates with limiting piston with the T shaped part of piston.
The described quick-fried contact pontic that dams that unloads, it is characterized in that: described upper and lower contact arm is the disk of center drilling, and described sliding cavity is installed in contact arm central through hole place, and described current-carrying slide block lower end passes lower contact arm by lower contact arm central through hole.
The described quick-fried contact pontic that dams that unloads, it is characterized in that: also be fixed with the relative long bolt in position on the described upper connection copper bar, described long bolt is connected with respectively and is clamped in the external ring flange of explosion chamber, is fixed on the top, sliding chamber of sliding cavity with the cavity that will explode.
The described quick-fried contact pontic that dams that unloads, it is characterized in that: also be provided with banking stop on the described lower connection copper bar, described banking stop is kept out in current-carrying slide block lower end with spacing current-carrying slide block.
The present invention removes to clash into the current-carrying slide block that is on the upper/lower terminal fixed contact contact with the powerful impulsive force pushing piston that produces during explosive charge in the blast cavity and moves down fast; and the current-carrying slide block is positioned rapidly in the cylindrical shell; thereby the disconnection path reaches the purpose of blocking fast large electric current, protection equipment.
Among the present invention, sliding cavity is installed in the through hole of upper end fixed contact contact, and the blast cavity is installed on the top, sliding chamber of sliding cavity, and blast cavity internal memory is put explosive.Can promote the piston that the current-carrying slide block moves down after in the sliding cavity of blast cavity bottom blast being housed, piston is slided the bottom, chamber and is designed for bottleneck by the sliding chamber guiding of sliding cavity, and its T shaped part that act as cooperation T shape piston is with limiting piston.
Among the present invention, the current-carrying slide block is waney step cylinder, and its smaller diameter end is hugged by upper end fixed contact contact, and larger diameter end is hugged by lower end fixed contact contact.Upper and lower end fixed contact contact one by one correspondence is fixed on the upper and lower contact arm, and upper and lower contact arm is the disk of center drilling, and the spacing of upper and lower contact arm is fixed by epoxy cylinder, and upper and lower contact arm is fastening with the copper bar of line attachment respectively.
Among the present invention, cylindrical shell is the cylindrical shell with taper inner, and the current-carrying slide block after being used for safe containment and damming is avoided slide block to pass and rebounded.
Beneficial effect of the present invention is:
1, it is energy-conservation and carry out production strictly in line with rules and regulations: when electric power system is short-circuited, the present invention removes to impact the current-carrying slide block movement with the explosive charge pushing piston, avoided the rude and unreasonable mode that the existing product technology must can be dammed by blowing up current－carrying conductor, namely substitute explosion by overcome friction and had the breaking force of certain passage section metal material, greatly saved the blast dosage.
Because the dosage of blast greatly reduces, so the vibration that produces when function is dammed in the execution blast and the sound that sends will alleviate greatly, production run is civilised; The waste gas that blast produces reduces in a large number, and environment is played useful protective effect.
2, safe and reliable:
1. explosion safety
A, explosion site: power section of the present invention (or claiming the blast cell) places outside the current－carrying conductor, and its blast does not occur in carrying object inside, and therefore fracture has avoided unexpected thing to occur without splash when cut-offfing.
B, fried cavity material: the employed fried chamber of existing product technology is carrying object, selects the good fine copper of electric conductivity to be made.And fried cavity material of the present invention can be selected different materials, and the material of the composition blast cell of selecting in the present invention is firm steel body, has eliminated all hidden peril of explosion.
2. be beneficial to arc extinguishing
A, since blast spatial placement of the present invention outside carrying object, the Heat of Formation and the combustion heat that produce when the explosion time explosive do not arrive fracture, namely quick-fried heat does not affect the fracture arc extinguishing.
B, existing product technology are because of in the carrying object implode, tear metal by blast and produce fracture, blast is torn and will certainly be produced some at fracture in the process and dance in the air the factor that the broken quarrel of metal or powder etc. exert an influence to arc extinguishing, and the present invention when cut-offfing without tearing metal process, so avoided these unfavorable factors.
C, since the present invention when cut-offfing without tearing metal process, so it is also brisk than existing product technology to cut-off action, easilier cooperate arc extinguishing with fuse.
D, fracture of the present invention are not the section that blast is torn, but artificially process two end faces of polishing, so fracture of the present invention flushes, electric field is even, has improved extinguishing voltage.
Description of drawings
Fig. 1 is tubulose carrying object row chamber implode schematic diagram in the prior art.
Fig. 2 is that tabular carrying object is arranged a side exploded perspective view in the prior art.
Fig. 3 is the present invention's pre-structure schematic diagram that explodes.
Fig. 4 is the present invention's rear structural representation that explodes.
Embodiment
Such as Fig. 3.The present invention is serially connected with in the main line of electric power system by upper connection copper bar 9, lower connection copper bar 1.Upper connection copper bar 9 is connected with upper contact arm 8, and lower connection copper bar 1 connects with lower contact arm 4, and the current-carrying slide block 6 that hugs by upper end fixed contact contact 7, lower end fixed contact contact 3 between two contact arms is communicated with, and has consisted of large current path, ensures normal electricity consumption.Current-carrying slide block slide block 6 is waney step cylinder, and its smaller diameter end is hugged by upper end fixed contact contact 7, and larger diameter end is hugged by lower end fixed contact contact 3.Upper end fixed contact contact 7 is fixed on the contact arm 8, and lower end fixed contact contact 3 is fixed on the lower contact arm 4, and upper and lower contact arm all is disks of center drilling.Upper contact arm 8, lower contact arm 4 spacings are fixed by epoxy cylinder 5.There is the steel body power section of protrusion upper contact arm 8 tops, and this steel body power section forms by blast cavity 12, piston 10 with for 11 3 parts of sliding cavity of piston guide.The middle part is used for fixing the up and down distance between contact arm with the overcoat of epoxy cylinder 5 these pontics of work of insulation.For making current-carrying slide block 6 ejecting device not after the blast, injure miscellaneous equipment, below lower contact arm 4, installed the cylindrical shell 2 with taper inner, be used for safe containment current-carrying slide block 6.Also be fixed with the relative long bolt in position 13 on the upper connection copper bar 9, long bolt 13 is connected with respectively the ring flange 14 that is clamped in outside the blast cavity 12, is fixed on the top, sliding chamber of sliding cavity 11 with the cavity 12 that will explode.Also be provided with banking stop 15 on the lower connection copper bar 1, banking stop 15 is kept out in current-carrying slide block 6 lower ends with spacing current-carrying slide block 6.
As shown in Figure 4.When operating electric power system is short-circuited, controller sends instruction at once, ignite the explosive of blast cavity 12 lumen loadings, explosive charge pushing piston 10 moves down along the direction of the sliding chamber restriction of sliding cavity 11, impact current-carrying slide block 6, the top and bottom of current-carrying slide block 6 break away from simultaneously with the upper end fixed contact contact 7 and the lower end fixed contact contact 3 that hug it, and short circuit current in instantaneous trip, is reached the disconnection purpose of this pontic.Current-carrying slide block 6 breaks away from that the upper end fixed contact contact 7 that hugs it and lower end fixed contact contact 3 are rear directly to be penetrated downwards, in order not shoot miscellaneous equipment wounded, be provided with the lower row space of the cylindrical shell 2 with cone-shaped inner hole in the structure of the present invention for current-carrying slide block 6, so that in a single day current-carrying slide block 6 is injected in the cylindrical shell 2, will tightly be clipped by the barrel of its terminal cone-shaped inner hole, not only having stopped current-carrying slide block 6 moves ahead and injures its thing, also prevented simultaneously the current-carrying slide block 6 bounce-backs cut main line of again conducting that goes back, safety is finished the quick-fried contact process of damming of unloading.
Claims (7)
1. the quick-fried contact pontic that dams that unloads, include, lower contact arm, and be enclosed within, lower contact arm is outer with on fixing, the epoxy cylinder of lower contact arm, be connected with the connection copper bar above the described upper contact arm, be connected with lower connection copper bar below the lower contact arm, it is characterized in that: also include the current-carrying slide block, described current-carrying upper end of slide block is positioned at epoxy cylinder and the upper end fixed contact contact that is installed on the contact arm hugs, described current-carrying slide block lower end passes lower contact arm and the lower end fixed contact contact that is installed on the lower contact arm hugs, be positioned at sliding cavity also is installed on the contact arm, the sliding chamber of described sliding cavity communicates with epoxy cylinder inside, the top, sliding chamber of sliding cavity is fixed with the blast cavity, be placed with explosive in the blast cavity, be provided with the piston by sliding chamber guiding in the sliding chamber of sliding cavity, the impulsive force pushing piston lower end bump current-carrying slide block that produces behind the explosive charge in the described blast cavity makes the current-carrying slide block break away from upper end fixed contact contact, the lower end falls behind the fixed contact contact location.
2. the quick-fried contact pontic that dams that unloads according to claim 1, it is characterized in that: also be fixed with cylindrical shell on the described lower connection copper bar, described cylindrical shell has taper inner, and the cylindrical shell lower end is small-bore nozzle end, the cylindrical shell upper end is large aperture nozzle end, and described cylindrical shell covers on outside the fixed contact contact of lower end by the cylindrical shell upper end.
3. the quick-fried contact pontic that dams that unloads according to claim 1, it is characterized in that: described current-carrying slide block is for being waney step cylinder, and the upper end of current-carrying slide block is smaller diameter end, and the lower end of current-carrying slide block is larger diameter end.
4. the quick-fried contact pontic that dams that unloads according to claim 1, it is characterized in that: the bottom, sliding chamber of described sliding cavity is shaped to the bottleneck shape, and described piston is T shape, and the bottom, sliding chamber by the bottleneck shape cooperates with limiting piston with the T shaped part of piston.
5. the quick-fried contact pontic that dams that unloads according to claim 1, it is characterized in that: described upper and lower contact arm is the disk of center drilling, described sliding cavity is installed in contact arm central through hole place, and described current-carrying slide block lower end passes lower contact arm by lower contact arm central through hole.
6. the quick-fried contact pontic that dams that unloads according to claim 1, it is characterized in that: also be fixed with the relative long bolt in position on the described upper connection copper bar, described long bolt is connected with respectively and is clamped in the external ring flange of explosion chamber, is fixed on the top, sliding chamber of sliding cavity with the cavity that will explode.
7. the quick-fried contact pontic that dams that unloads according to claim 1, it is characterized in that: also be provided with banking stop on the described lower connection copper bar, described banking stop is kept out in current-carrying slide block lower end with spacing current-carrying slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110135698 CN102214535B (en) | 2011-05-25 | 2011-05-25 | Cut-off bridge body with exploding discharging contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110135698 CN102214535B (en) | 2011-05-25 | 2011-05-25 | Cut-off bridge body with exploding discharging contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102214535A CN102214535A (en) | 2011-10-12 |
| CN102214535B true CN102214535B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110135698 Expired - Fee Related CN102214535B (en) | 2011-05-25 | 2011-05-25 | Cut-off bridge body with exploding discharging contact |
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| Country | Link |
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| CN (1) | CN102214535B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811228B (en) * | 2013-12-13 | 2015-09-23 | 合肥南南电力保护设备有限公司 | Three-phase integrated slide type blast cut-off equipment |
| DE102019104451A1 (en) * | 2019-02-21 | 2019-04-11 | Peter Lell | Electric circuit breaker with a tubular separator of varying wall thickness |
| WO2023125092A1 (en) * | 2021-12-30 | 2023-07-06 | 厦门宏发电力电器有限公司 | Switching device with pyrotechnic actuation apparatus |
| CN114758923B (en) * | 2022-03-15 | 2024-02-06 | 西安中熔电气股份有限公司 | Fuse integrated contactor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4527025A (en) * | 1983-02-02 | 1985-07-02 | Networks Electronic Corp. | Miniature delay switch |
| JP4180707B2 (en) * | 1998-10-15 | 2008-11-12 | 日油技研工業株式会社 | Emergency power shut-off device |
| CN101178993B (en) * | 2007-12-07 | 2010-04-14 | 合肥南南电力保护设备有限公司 | Great current quick-speed turning on-off body |
| CN201215786Y (en) * | 2008-06-02 | 2009-04-01 | 陕西蓝河电气工程有限公司 | Novel explosion cutting type large current quick isolation switch |
-
2011
- 2011-05-25 CN CN 201110135698 patent/CN102214535B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102214535A (en) | 2011-10-12 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 230031, Anhui, Shushan province Hefei New Industrial Park Road No. 88 Bridge Patentee after: Hefei Nannan Power Equipment Co., Ltd. Address before: The northbound bridge east, Yang Ji Hefei Road, Shushan new industrial park in Anhui province No. 2 building 230031 Patentee before: Hefei Nannan Electric Power Protection Equipment Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20180525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |