CN102110554B - Protective device for high-voltage power equipment - Google Patents
Protective device for high-voltage power equipment Download PDFInfo
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- CN102110554B CN102110554B CN201010271688.9A CN201010271688A CN102110554B CN 102110554 B CN102110554 B CN 102110554B CN 201010271688 A CN201010271688 A CN 201010271688A CN 102110554 B CN102110554 B CN 102110554B
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- power equipment
- spacer bar
- voltage power
- disconnector
- lead wire
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Abstract
The invention discloses a protective device for high-voltage power equipment. The existing protective tubes for power equipment can not meet the requirement of the high-voltage power equipment for overcurrent protection, so the power equipment such as transformers, generators and the like is damaged from time to time. The protective device comprises an insulating spacer bar arranged between left and right power supply buses, wherein metal leads are connected between the two ends of the insulating spacer bar; at least one end of the two ends of the insulating spacer bar is provided with a disconnector which can flick the metal leads in the presence of fault current; one end of the disconnectors is connected with the insulating spacer bar via fixing devices and the other end of the disconnectors is connected with the metal leads; and an insulating support bar for preventing the metal leads from being flicked down and grounded is fixedly connected with the lower parts of the metal leads. The protective device has the following beneficial effects: the disconnectors are used for flicking the metal leads when the power supply circuits have fault current, and the leads droop under the actions of impact wave and gravity and break away from the circuits, thus achieving the aims of absolute arc extinction and fault stop, realizing overcurrent protection of the power equipment and filling in the gap in the field of overcurrent protection of the high-voltage power equipment.
Description
Technical field
The present invention relates to a kind of power equipment safeties, especially a kind of for high voltage electric power equip ment the safeties as 66kV, 110kV, 220kV, 330kV and the above transformer of 500kV, also can be used as the insurance of high-power generator.
Background technology
Existing transformer, generator in the supply of electric power line failure due to switch failure, the phenomenon that causes transformer, generator to damage happens occasionally, particularly 66kV, 110kV, 220kV, 330kV, the above active high voltage electric power equip ment of 500kV, due to the safeties that lack applicable this kind equipment, when line current breaks down or is abnormal, the electric current of fault will make this kind equipment impaired, likely burns transformer when serious and generator causes fire.And protective tube of the prior art can not be applicable to the above power equipment of 35kV, this be because: in the larger circuit of fault current, when fuse fusing occurs in a flash, between its two electrode, the arcing phenomenon can occur, electric current can not be cut off in time, thereby cause power equipment impaired, even accident is further enlarged.
In order to prevent the generation of this class accident, be necessary to develop a kind of safeties that are applicable to high voltage electric power equip ment.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of safeties that are applicable to high voltage electric power equip ment, it is installed in the high voltage supply circuit, can moment cut off in time electric current, has realized that transformer, generator failure stop, and guarantee the safety of power equipment.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of safety device for high-voltage power equipment, comprise the insulation spacer bar be arranged between left and right power supply buses, described insulation spacer bar is connected with metal lead wire between two ends, and at least one end at insulation spacer bar both ends is provided with the disconnector that metal lead wire can be flicked under fault current, described disconnector one end is connected with the insulation spacer bar by fixture, the other end is connected with metal lead wire, and described metal lead wire below is fixedly connected with the insulating support rod that prevents that the metal lead wire bullet from falling ground connection.
As the preferred embodiment of the present invention, the both ends of described spacer bar are equipped with above-mentioned disconnector.Described metal lead wire is divided into two sections, and these the two sections connecting ears that arrange by the insulating support rod top are realized being electrically connected to.
As a further improvement on the present invention, described disconnector is the thermal explosion disconnector, it comprises induction coil and metal shell, is provided with the heating resistor and the explosive that are electrically connected to induction coil in described metal shell, between described heating resistor and explosive, by explosive train or detonator, is connected.
The invention has the beneficial effects as follows: the shock wave bomb karat gold by disconnector when the present invention reaches fault current in supply line belongs to lead-in wire; lead-in wire is sagging under Action of Gravity Field; break away from bus; thereby reach the purpose of complete arc extinguishing and termination failure; and, by the support of insulating support rod, sagging metal lead wire can ground connection, has stopped potential safety hazard; realize the overcurrent protection of power equipment, filled up the blank in high voltage electric power equip ment overcurrent safety field.When adopting the bilateral disconnector, even there is the disconnector of a side to break down, the disconnector of opposite side still can work on, and has further guaranteed the safety of transformer, generator or other power equipments.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is the structural representation under operating state of the present invention;
Fig. 2 is the structural representation under malfunction of the present invention;
Fig. 3 is the structural representation under the disconnector operating state;
Fig. 4 is the structural representation under the disconnector malfunction.
Embodiment
With reference to Fig. 1, Fig. 2, a kind of safety device for high-voltage power equipment, comprise the insulation spacer bar 3 be arranged between left and right power supply buses 1,2, described insulation spacer bar is connected with metal lead wire 4 between 3 two ends, and at least one end at insulation spacer bar both ends is provided with the disconnector 6 that metal lead wire can be flicked under fault current, described disconnector 6 one ends are connected with insulation spacer bar 3 by fixture 5, the other end is connected with metal lead wire 4, and described metal lead wire 4 belows are fixedly connected with the insulating support rod 7 that prevents that the metal lead wire bullet from falling ground connection.
In order to ensure the safety of power equipment, the both ends of described spacer bar 3 are equipped with disconnector 6, and like this, even there is the disconnector of a side to break down, the disconnector of opposite side still can work on.Described metal lead wire 4 is divided into two sections, and these the two sections connecting ears that arrange by insulating support rod 7 tops 8 are realized being electrically connected to.Like this, under normal operating conditions, left and right power supply buses, by metal lead wire 4 conductings, breaks down and work as circuit, only needs disconnector and the lead-in wire of changing a side to get final product.
Described fixture 5 is for being fixed on the hangers of spacer bar 3 ends, and the design of this device is not limited to the scope of the present embodiment, as long as be convenient to, disconnector is connected between power supply buses and metal lead wire.
When the electric current in supply line reaches fault current, the disconnector action, blow metal lead wire 4, go between sagging under Action of Gravity Field, and breaking circuit, current interruptions, thus guaranteed the safety of power equipment in the supply line.
With reference to Fig. 3, Fig. 4, disconnector in the present embodiment has adopted heat explosion type, it comprises induction coil 61 and metal shell 62, is provided with the heating resistor 65 and the explosive 63 that are electrically connected to induction coil 61 in described metal shell 62, and described heating resistor 65 is connected by explosive train 64 with explosive 63.When supply line breaks down or is abnormal, in supply line, electric current raises, while reaching fault current, electric current flows through induction coil 61 and produces electromagnetism or electronic induction, and the output energy raises heating resistor 62 temperature, thereby light explosive train 64, utilize the shock wave of explosive 63 that wire is flicked, by the electric energy arc extinguishing, reach the electric current instantaneous trip, realize failure stopping, guarantee the safety of power equipment in circuit.
The present invention can meet high voltage electric power equip ment, as the failure stopping of 66kV, 110kV, 220kV, 330kV, 500kV, the isallobaric device of 1000kV, and also can be as the insurance of high-power generator and relevant power equipment.
Claims (6)
1. a safety device for high-voltage power equipment, it is characterized in that: comprise and be arranged on a left side, right power supply buses (1, 2) the insulation spacer bar (3) between, described insulation spacer bar (3) is connected with metal lead wire (4) between two ends, and at least one end at insulation spacer bar both ends is provided with the disconnector (6) that metal lead wire can be flicked under fault current, described disconnector (6) one ends are connected with insulation spacer bar (3) by fixture (5), the other end is connected with metal lead wire (4), described metal lead wire (4) below is fixedly connected with the insulating support rod (7) that prevents that the metal lead wire bullet from falling ground connection.
2. safety device for high-voltage power equipment according to claim 1, is characterized in that the both ends of described spacer bar (3) are equipped with above-mentioned disconnector (6).
3. safety device for high-voltage power equipment according to claim 2, is characterized in that described metal lead wire (4) is divided into two sections, and these the two sections connecting ears (8) that arrange by insulating support rod (7) top are realized being electrically connected to.
4. according to claim 1 or 2 or 3 described safety device for high-voltage power equipments, it is characterized in that: described fixture (5) is for being fixed on the hangers of spacer bar (3) end.
5. according to claim 1 or 2 or 3 described safety device for high-voltage power equipments, it is characterized in that: described disconnector (6) is the thermal explosion disconnector.
6. safety device for high-voltage power equipment according to claim 5 is characterized in that:
Described thermal explosion disconnector comprises induction coil (61) and metal shell (62), be provided with the heating resistor (65) and the explosive (63) that are electrically connected to induction coil (61) in described metal shell (62), be connected by explosive train or detonator (64) between described heating resistor (65) and explosive (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010271688.9A CN102110554B (en) | 2010-09-03 | 2010-09-03 | Protective device for high-voltage power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010271688.9A CN102110554B (en) | 2010-09-03 | 2010-09-03 | Protective device for high-voltage power equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102110554A CN102110554A (en) | 2011-06-29 |
| CN102110554B true CN102110554B (en) | 2014-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010271688.9A Active CN102110554B (en) | 2010-09-03 | 2010-09-03 | Protective device for high-voltage power equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN102110554B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505313B (en) * | 2014-12-02 | 2017-03-29 | 国家电网公司 | It is provided with the safety device for high-voltage power equipment of shell fragment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2553508Y (en) * | 2002-05-14 | 2003-05-28 | 宣自平 | Integrated over-current overvoltage protector |
| CN2692826Y (en) * | 2004-03-04 | 2005-04-13 | 郑平 | Special insulative operating rod for high-voltage drop fuse |
| CN201117606Y (en) * | 2007-10-28 | 2008-09-17 | 耿红兵 | High-voltage drop-off fuse |
| CN201886990U (en) * | 2010-09-03 | 2011-06-29 | 何排枝 | Safety device for high-voltage power equipment |
-
2010
- 2010-09-03 CN CN201010271688.9A patent/CN102110554B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2553508Y (en) * | 2002-05-14 | 2003-05-28 | 宣自平 | Integrated over-current overvoltage protector |
| CN2692826Y (en) * | 2004-03-04 | 2005-04-13 | 郑平 | Special insulative operating rod for high-voltage drop fuse |
| CN201117606Y (en) * | 2007-10-28 | 2008-09-17 | 耿红兵 | High-voltage drop-off fuse |
| CN201886990U (en) * | 2010-09-03 | 2011-06-29 | 何排枝 | Safety device for high-voltage power equipment |
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| Publication number | Publication date |
|---|---|
| CN102110554A (en) | 2011-06-29 |
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