CN203038855U - Quick-break current-limiting protective bridge body - Google Patents
Quick-break current-limiting protective bridge body Download PDFInfo
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- CN203038855U CN203038855U CN 201320019769 CN201320019769U CN203038855U CN 203038855 U CN203038855 U CN 203038855U CN 201320019769 CN201320019769 CN 201320019769 CN 201320019769 U CN201320019769 U CN 201320019769U CN 203038855 U CN203038855 U CN 203038855U
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- bridge
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- hollow bridge
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Abstract
The utility model relates to a quick-break current-limiting protective bridge body comprising a hollow bridge column. A central position of an inner part of the hollow bridge column is provided with an explosive column. An upper end and a lower end of the hollow bridge column are respectively disposed in a first flange disc and a second flange disc by a first bridge side and a second bridge side. The first flange disc, the second flange disc, and the hollow bridge column are disposed in a protective cover. The quick-break current-limiting protective bridge body is serially connected with an electric line, and once the short circuit of the line occurs, the current flowing through the hollow bridge body exceeds a setting value, then an electric detonator can be triggered to detonate the explosive, therefore the hollow bridge column is broken by the explosive from the V-shaped groove, and the broken hollow bridge body can be rolled in the shape of a chrysanthemum, and the hollow bridge body can be broken instantly and the distances among fragments of the hollow bridge body are large, then the short circuit current can be cut. The shock wave, the noises, and the vibration generated by the explosion are limited in the protective cover, and the damage of devices around the bridge body can be prevented. The quick-break current-limiting protective bridge body has advantages of large current capacity, strong quick-break capability, safety, reliability, easy installation and replacement, applicability in solving short circuit faults of electric power system, and ability of being used as high speed break switch in electric power network.
Description
Technical field
The utility model relates to the electric power protection field, especially a kind of quick-break current-limiting protection pontic.
Background technology
For near the short trouble that occurs in generator outlet end and the transformer port of export, because short circuit current is very big, be about 4～13 times of rated current, must cut-off the fault point immediately, to avoid miscellaneous equipment such as generating set impaired.At present, in China, conventional switch receive that fault-signal, contact are opened, arcing is so that the whole process of blow-out, switch cut-offs only is short-circuit current value close to steady-state current, and the maximum of short circuit current has flow through from power equipment, and this has very big electromagnetic power and thermal effect effect to various generating equipments, converting equipment.For guaranteeing electrical reliability, switch is done bulkyly guaranteeing to have enough dynamic thermal stabilities, and power equipment be in order to tolerate certain short circuit current, and its various parameters are all corresponding to leave certain nargin, and this has just increased equipment cost greatly.Therefore, though this mode can be cut-off short circuit current, protected mode is not highly effective, and often the accident of being short-circuited causes motor and electric equipment to burn out accident, gives generating and causes heavy economic losses with electric unit.Existing high-capacity and high-speed current-limiting protection device, also useful explosive is blown pontic as section breaker, but its complex structure is installed the replacing inconvenience, and cost is high especially.
The utility model content
The purpose of this utility model be to provide a kind of be applicable to be applied in rated current higher and need under the occasion of quick disjunction short-circuit protection, simple in structure, cost is low, be convenient to install the quick-break current-limiting protection pontic of replacing.
For achieving the above object; the utility model has adopted following technical scheme: a kind of quick-break current-limiting protection pontic; comprise hollow bridge post; its inner center position arranges explosive column; the upper/lower terminal of hollow bridge post is installed in first and second ring flange by first and second bridge group respectively, and first and second ring flange and hollow bridge post are positioned at protective cover.
Described hollow bridge post is to surround the cylinder that forms by a plurality of fan-shaped posts, and the center position of cylindrical inner wall is offered a circle groove.
Described explosive column is made up of electric cap and multilayer explosive layer, and electric cap is embedded in the explosive layer.
Offer first installing hole on described first ring flange and the screwed hole of first bridge group be used for to be installed, the upper end of hollow bridge post is helped the screwed hole of offering by first bridge and is installed in first bridge and helps, and the hollow position of hollow bridge post upper end is installed first and stopped up post; Offer second installing hole on described second ring flange and the screwed hole of second bridge group be used for to be installed, the lower end of hollow bridge post is helped the screwed hole of offering by second bridge and is installed in second bridge and helps, and the hollow position of hollow bridge post lower end is installed second and stopped up post.
Described protective cover is cylindric, and symmetry is offered cushion hole on the cover body of protective cover.
Described fan-shaped number of living is 8, and the cross sectional shape of described groove is V-type.
Described explosive layer is totally three layers of upper, middle and lower, and the hexogen raw material is housed in the explosive layer, the explosive layer in the middle of electric cap is embedded in and is positioned at.
As shown from the above technical solution, the utility model is installed in series in power circuit, can be used on generator, transformer exit.Under normal circumstances, big electric current can pass through pontic, and pontic impedance heat waste is ignored.In case there is short circuit to take place in the circuit, the electric current that flows through pontic surpasses setting value and namely triggers the electric cap ignition charge, make hollow bridge post blow up from middle energy-gathering ring, and the hollow bridge post 1 after make disconnecting winds off as chrysanthemum shape branch, thereby pontic moment separately and the big cutting-off of short-circuit electric current of distance.Impact generated by explosion ripple, noise, vibration limiting are avoided the equipment of pontic periphery is produced infringement in protective cover.The utility model has the advantages that current capacity is big, breaking capacity is strong, and is safe and reliable, is easy to install change, and can be widely used in solving the short trouble of electric power system, also can be applicable to electrical network and uses as the high speed section breaker.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of explosive column in the utility model.
Embodiment
A kind of quick-break current-limiting protection pontic; comprise hollow bridge post 1; its inner center position arranges explosive column 2; the upper/lower terminal of hollow bridge post 1 is installed in first and second ring flange 5,6 by first and second bridge group 3,4 respectively, first and second ring flange 5,6 and hollow bridge post 1 be positioned at protective cover 7.Described hollow bridge post 1 is to surround the cylinder that forms by a plurality of fan-shaped posts, and the center position of cylindrical inner wall is offered a circle groove 1a, constitutes energy-gathering ring.As shown in Figure 1.
As shown in Figure 1, offer the first installing hole 5a on described first ring flange 5 and be used for installing the screwed hole of first bridge group 3, the upper end of hollow bridge post 1 is installed in first bridge group 3 by the screwed hole of offering in first bridge group 3, and the hollow position of hollow bridge post 1 upper end is installed first and stopped up post 8; Offer the second installing hole 6a on described second ring flange 6 and be used for installing the screwed hole of second bridge group 4, the lower end of hollow bridge post 1 is installed in second bridge group 4 by the screwed hole of offering in second bridge group 4, and the hollow position of hollow bridge post 1 lower end is installed second and stopped up post 9.First and second bridge group 3,4 is used for fixation hollow bridge post 1, and can connect first and second ring flange 5,6, makes hollow bridge post 1 and first and second method even coil 5,6 and is connected firmly; First and second ring flange 5,6 mainly plays the connection effect makes pontic be easily installed in the protection power circuit; First and second stop up post 8,9 be used for reinforcing hollow bridge post 1, first and second ring flange 5,6 with being connected of first and second bridge group 3,4, and work the important function of stopping up explosive column 2.Hollow bridge post 1, first and second bridge group 3,4, first and second ring flange 5,6 and first and second stop up post 8,9 hickey, ease of assembly all arranged.
As shown in Figure 1, the number of described fan-shaped post is 8, the cross sectional shape of described groove 1a is V-type, this structure decrease the detonation stresses minimum burden, make the explosion pontic to break apart from energy-gathering ring, and pontic is smooth after explosion blows up, thereby and 8 lobe branches wind off and finish the disjunction of pontic electric current.Described protective cover 7 is cylindric, and protective cover 7 adopts the insulating epoxy material, and symmetry is offered four row's cushion hole 7a on the cover body of protective cover 7, makes explosion wave, noise, vibration limiting in protective cover 7, has effectively guaranteed the safety of explosion.
As shown in Figure 2, described explosive column 2 is made up of electric cap 2a and multilayer explosive layer 2b, and electric cap 2a is embedded in the explosive layer 2b.Described explosive layer 2b is totally three layers of upper, middle and lower, and the hexogen raw material is housed in the explosive layer 2b, the explosive layer 2b in the middle of electric cap 2a is embedded in and is positioned at.Protection philosophy of the present utility model is to blow hollow bridge post 1 with explosive, and blowing up the back at hollow bridge post 1 only needs the hollow bridge post 1 of replacing namely to can be recycled.Electric cap 2a is instant electric detonator, and explosive is the violent matter explosive of hexogen, density 1.769g/cm
3The time explosion velocity be 8741m/s, quick-fried heat is 6025kJ/kg, makes pontic breaking speed＜1ms.Explosive divides three sections encapsulation, and electric cap 2a makes the pontic perfection to be blown explosive performance maximum efficiency finish the disjunction bending at middle medicine layer.
In sum, the utility model is installed in series in power circuit, can be used on generator, transformer exit.Under normal circumstances, big electric current can pass through pontic, and pontic impedance heat waste is ignored.In case there is short circuit to take place in the circuit, the electric current that flows through pontic surpasses setting value and namely triggers electric cap 2a ignition charge, make hollow bridge post 1 blow up from middle energy-gathering ring, and the hollow bridge post 1 after make disconnecting winds off as chrysanthemum shape branch, thereby pontic moment separately and the big cutting-off of short-circuit electric current of distance.Impact generated by explosion ripple, noise, vibration limiting are avoided the equipment of pontic periphery is produced infringement in protective cover 7.The utility model has the advantages that current capacity is big, breaking capacity is strong, and is safe and reliable, is easy to install change, and can be widely used in solving the short trouble of electric power system, also can be applicable to electrical network and uses as the high speed section breaker.
Claims (7)
1. quick-break current-limiting protection pontic; it is characterized in that: comprise hollow bridge post (1); its inner center position arranges explosive column (2); the upper/lower terminal of hollow bridge post (1) is installed in first and second ring flange (5,6) by first and second bridge group (3,4) respectively, and first and second ring flange (5,6) and hollow bridge post (1) are positioned at protective cover (7).
2. quick-break current-limiting protection pontic according to claim 1, it is characterized in that: described hollow bridge post (1) is to surround the cylinder that forms by a plurality of fan-shaped posts, the center position of cylindrical inner wall is offered a circle groove (1a).
3. quick-break current-limiting protection pontic according to claim 1, it is characterized in that: described explosive column (2) is made up of electric cap (2a) and multilayer explosive layer (2b), and electric cap (2a) is embedded in the explosive layer (2b).
4. quick-break current-limiting protection pontic according to claim 1, it is characterized in that: offer first installing hole (5a) on described first ring flange (5) and be used for installing the screwed hole of first bridge group (3), the screwed hole that the upper end of hollow bridge post (1) is helped to offer on (3) by first bridge is installed in first bridge group (3), and the hollow position of hollow bridge post (1) upper end is installed first and stopped up post (8); Offer second installing hole (6a) on described second ring flange (6) and be used for installing the screwed hole of second bridge group (4), the screwed hole that the lower end of hollow bridge post (1) is helped to offer on (4) by second bridge is installed in second bridge group (4), and the hollow position of hollow bridge post (1) lower end is installed second and stopped up post (9).
5. quick-break current-limiting protection pontic according to claim 1 is characterized in that: described protective cover (7) is for cylindric, and symmetry is offered cushion hole (7a) on the cover body of protective cover (7).
6. quick-break current-limiting protection pontic according to claim 2, it is characterized in that: the number of described fan-shaped post is 8, the cross sectional shape of described groove (1a) is V-type.
7. quick-break current-limiting protection pontic according to claim 3; it is characterized in that: described explosive layer (2b) is totally three layers of upper, middle and lower; in the explosive layer (2b) the hexogen raw material is housed, the explosive layer (2b) in the middle of electric cap (2a) is embedded in and is positioned at.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019769 CN203038855U (en) | 2013-01-15 | 2013-01-15 | Quick-break current-limiting protective bridge body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019769 CN203038855U (en) | 2013-01-15 | 2013-01-15 | Quick-break current-limiting protective bridge body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203038855U true CN203038855U (en) | 2013-07-03 |
Family
ID=48690951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320019769 Expired - Lifetime CN203038855U (en) | 2013-01-15 | 2013-01-15 | Quick-break current-limiting protective bridge body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203038855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305370A (en) * | 2015-12-09 | 2016-02-03 | 吉少波 | Electric automobile short circuit protector |
-
2013
- 2013-01-15 CN CN 201320019769 patent/CN203038855U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305370A (en) * | 2015-12-09 | 2016-02-03 | 吉少波 | Electric automobile short circuit protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Quick-break current-limiting protective bridge body Effective date of registration: 20160729 Granted publication date: 20130703 Pledgee: Hefei high tech Company limited by guarantee Pledgor: ANHUI HUIDIAN TECHNOLOGY Co.,Ltd. Registration number: 2016340000038 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170619 Granted publication date: 20130703 Pledgee: Hefei high tech Company limited by guarantee Pledgor: ANHUI HUIDIAN TECHNOLOGY Co.,Ltd. Registration number: 2016340000038 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |