CN201821096U - Three-phase combined overvoltage protector with gap - Google Patents
Three-phase combined overvoltage protector with gap Download PDFInfo
- Publication number
- CN201821096U CN201821096U CN2010205785918U CN201020578591U CN201821096U CN 201821096 U CN201821096 U CN 201821096U CN 2010205785918 U CN2010205785918 U CN 2010205785918U CN 201020578591 U CN201020578591 U CN 201020578591U CN 201821096 U CN201821096 U CN 201821096U
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- zinc oxide
- oxide valve
- gap
- valve plate
- gap body
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Abstract
A three-phase combined overvoltage protector with a gap relates to an overvoltage protection device in an electrical device in a power system, which comprises four zinc oxide valve sheets, wherein one end of the first zinc oxide valve sheet R1, one end of the second zinc oxide valve sheet R2 and one end of the third zinc oxide valve sheet R3 are respectively connected with an A phase end, a B phase end and a C phase end of a protected device, the other ends are respectively connected in series with the fourth zinc oxide valve sheet R4 through a gap body DC, the other end of the fourth zinc oxide valve sheet R4 is grounded, and the four zinc oxide valve sheets and the gap body DC are mutually and independently sealed and fixed on an epoxy bottom box. The three-phase combined overvoltage protector with the gap has the benefits that the zinc oxide valve sheets and the discharge gap are combined to achieve mutual protection, the discharge gap can enable chargeability of the zinc oxide valve sheets to be zero, the nonlinearity of the zinc oxide valve sheets can further enable the discharge gap to realize arc blowout immediately after actions, the discharge gap does not bear the arc extinguishing task any more, and the service life of a product is prolonged.
Description
Technical field
The utility model relates to the overvoltage protection of electric equipment in the electric power system, especially a kind of gapped type three phase combined over-voltage protector.
Background technology
China nineteen seventies developed three relatively composite type SiC lightning arrester the trend that shields to alternate is arranged, but because the restriction of SiC body resistance performance, self can't normally move, so the alternate protection problem of lightning arrester is undecided always.Perfect along with the ZnO resistive performance, the alternate protection of three phase combined lightning arrester is theoretical is just put on " agenda " from nineteen nineties, and its excellent overvoltage protection performance is familiar with by most of electricity consumption industries.
At present, like product all is placed on gap body and zinc oxide valve plate in the cavity, easily produces that sealing is made moist, the worker is put interference, galvanic corrosion, problem such as aging; In addition, the electrical connecting wires of like product inside is also very complicated.
The utility model content
The technical problem that the utility model solved is to provide a kind of the purpose of this utility model to be to provide a kind of gapped type three phase combined over-voltage protector that makes moist, wears out of avoiding sealing.
The technical problem that the utility model solved realizes by the following technical solutions:
A kind of gapped type three phase combined over-voltage protector; comprise four zinc oxide valve plates; it is characterized in that: the end of the described first zinc oxide valve plate R1, the second zinc oxide valve plate R2, the 3rd zinc oxide valve plate R3 connects A, the B of protected equipment, C three phase terminals respectively; the other end is connected with the 4th zinc oxide valve plate R4 by gap body DC respectively; other end ground connection with described the 4th zinc oxide valve plate R4; described four zinc oxide valve plates, gap body DC seal independently of one another, are fixed at the bottom of the epoxy on the box.
The outer cover of described four zinc oxide valve plates, gap body DC is provided with the silicon rubber insulation cover, and by the fixing encapsulation of rubber securing member, envelope is irritated in the cavity that described silicon rubber insulation overlaps with box-like at the bottom of the epoxy becomes high-intensity epoxy resin and curing agent.
Described gap body DC comprises into electrode and goes out electrode, advances electrode and is connected with zinc oxide valve plate, goes out electrode and is connected with bolt, advances electrode and goes out electrode gap and cooperate.
Described gap body DC is made by copper material.
Offer four disks at the bottom of the described epoxy on the box successively, disk is made up of three independent fanning strips, the center of disk offers the connecting hole that matches with bolt, and the first gap body DC1, the second gap body DC2, third space body DC3 and the 4th zinc oxide valve plate R4 are fixed at the bottom of the epoxy on the box by bolt and connecting hole successively.
The beneficial effects of the utility model are to adopt zinc oxide valve plate and discharging gap structure combining, both are protected each other, it is zero that discharging gap makes the chargeability of zinc oxide valve plate, zinc oxide valve plate non-linear makes blow-out immediately after the discharging gap action again, discharging gap is no longer born the arc extinguishing task, improved the useful life of product, under the switching overvoltage situation, operating life improves nearly 30 times than no gap oxide lightning arrester; Simultaneously, zinc oxide valve plate and gap body is independent sealed separately, and the aging phenomenon of gap body or zinc oxide can not occur the product overall failure again and jeopardize system, but and the unit safeguard, save cost.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model;
Fig. 2 is the winding diagram that the utility model inserts protected motor;
Fig. 3 is a structural representation of the present utility model;
Fig. 4 is the vertical view of box at the bottom of the epoxy among Fig. 3.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in figures 1 and 3; a kind of gapped type three phase combined over-voltage protector; comprise four zinc oxide valve plates; wherein the first zinc oxide valve plate R1, the second zinc oxide valve plate R2, the 3rd zinc oxide valve plate R3 one end connect A, B, the C three phase terminals of protected equipment respectively; the other end is connected with the 4th zinc oxide valve plate R4 by gap body DC respectively; the other end ground connection of the 4th zinc oxide valve plate R4, four zinc oxide valve plates, gap body DC seal independently of one another, are fixed at the bottom of the epoxy on the box 60.Its intermediate gap body DC is made by copper material, comprises into electrode and goes out electrode, advances electrode and is connected with zinc oxide valve plate, goes out electrode and is connected with bolt 50, advances electrode and go out to be provided with the gap between the electrode.Adopt the overvoltage protection device of gap body structure; eliminated the influence of distribution and stray capacitance to discharge performance; solved the bigger difficult problem of gap decentralization that like product is difficult to overcome; the protection value is more accurate; not having the gap overvoltage protection device with routine compares with traditional lightning arrester; alternate overvoltage has reduced by 60%～70%, and the reliability of protection greatly improves.In addition, the voltge surge coefficient in the utility model is 1, and the discharge voltage value all equates under various voltage waveforms, and be not subjected to the influence of various switching overvoltage waveforms, the overvoltage protection value is accurate, and protective value is good.
As shown in Figure 2; the protected equipment of a termination of the first zinc oxide valve plate R1, the second zinc oxide valve plate R2, the 3rd zinc oxide valve plate R3 is the three phase terminals of motor 10; the other end is connected with the 4th zinc oxide valve plate R4 by gap body DC; the other end ground connection of the 4th zinc oxide valve plate R4; this electrical wiring mode is reasonable; be convenient to install, can avoid occurring the worker simultaneously and put phenomenons such as interference, galvanic corrosion.
As shown in Figure 3, the outer cover of four zinc oxide valve plates, gap body DC is provided with silicon rubber insulation cover 20, the outside of the outside of the outside of the first zinc oxide valve plate R1 and the first gap body DC1, the second zinc oxide valve plate R2 and the second gap body DC2, the 3rd zinc oxide valve plate R3 and third space body DC3, the outside of the 4th zinc oxide valve plate R4 are arranged with silicon rubber insulation cover 20 respectively, size, the shape of four silicon rubber insulation covers are identical, adopt fire-retardant, ageing-resistant silicon rubber to do sheathing material.
As shown in Figure 3 and Figure 4; four zinc oxide valve plates; the gap body all is contained in the inside of silicon rubber insulation cover 20 by rubber securing member fixed sealing; the first zinc oxide valve plate R1; the second zinc oxide valve plate R2; the 3rd zinc oxide valve plate R3; the termination silicon rubber high-voltage cable 30 of the 4th zinc oxide valve plate R4; end away from zinc oxide valve plate on the silicon rubber high-voltage cable 30 is equipped with wiring copper nose 40; wherein; high-voltage cable 30 is by wiring copper nose 41; 42; 43 meet the A of protected equipment; B; the C three phase terminals; high-voltage cable 30 is by wiring copper nose 44 ground connection; the first zinc oxide valve plate R1; the second zinc oxide valve plate R2; the other end of the 3rd zinc oxide valve plate R3 by lead respectively with the first gap body DC1; the second gap body DC2; third space body DC3 connects; the first gap body DC1; the second gap body DC2; the other end of third space body DC3 is fixed at the bottom of the epoxy on the box 60 by bolt 50; the 4th zinc oxide valve plate R4 directly is fixed at the bottom of the epoxy on the box 60 by bolt 50; the first gap body DC1; the second gap body DC2; offer the screwed hole that matches with bolt 50 on third space body DC3 and the end that bolt 50 is connected, be connected by copper sheet between the 4th zinc oxide valve plate R4 and the bolt 50.Offer four disks 61 at the bottom of the epoxy on the box 60 successively, disk 61 is made up of three independent fanning strips, the center of disk 61 is provided with the connecting hole 62 that matches with bolt 50, the first gap body DC1, the second gap body DC2, third space body DC3 and the 4th zinc oxide valve plate R4 are fixed at the bottom of the epoxy on the box 60 by bolt 50 and connecting hole 62 successively, bolt 50 passes connecting hole 62 backs and uses nut screwing clamping, perhaps connecting hole 62 is designed to the screwed hole that matches with bolt 50.
In conjunction with Fig. 3 and shown in Figure 4, when mounted, zinc oxide assembly and gap body DC fixing seal are overlapped in 20 at silicon rubber insulation, with the first gap body DC1, the second gap body DC2, third space body DC3 and the 4th zinc oxide valve plate R4 are fixed at the bottom of the epoxy on the box 60 successively, connect silicon rubber high-voltage cable 30, after loading onto wiring copper nose 40, be inverted, high-intensity epoxy resin and curing agent 70 are poured in the cavity that silicon rubber insulation cover 20 and box at the bottom of the epoxy 60 form by the gap between the fanning strip on the disk 61, fill up the gap until epoxy resin and curing agent 70, treat to install after high-intensity epoxy resin and curing agent 70 solidify.Adopt the mode of pouring epoxy resin and curing agent 70 can guarantee that zinc oxide valve plate and gap body DC reach good sealing effectiveness, the while also can increase the intensity of combination overvoltage protector itself, prevents phenomenon such as make moist, wear out better.
In sum; core of the present utility model is to adopt gap body DC structure; and with gap body DC and zinc oxide valve plate is installed separately separately, each other the sealing; to avoid there is cavity around the main body zinc oxide assembly, solved in the prior art the insoluble sealing of gapped type combination overvoltage protector problem such as make moist, wear out.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. gapped type three phase combined over-voltage protector; comprise four zinc oxide valve plates; it is characterized in that: the end of the described first zinc oxide valve plate R1, the second zinc oxide valve plate R2, the 3rd zinc oxide valve plate R3 connects A, the B of protected equipment, C three phase terminals respectively; the other end is connected with the 4th zinc oxide valve plate R4 by gap body DC respectively; other end ground connection with described the 4th zinc oxide valve plate R4; described four zinc oxide valve plates, gap body DC seal independently of one another, are fixed at the bottom of the epoxy on the box.
2. according to the described gapped type three phase combined over-voltage protector of claim 1; it is characterized in that: the outer cover of described four zinc oxide valve plates, gap body DC is provided with the silicon rubber insulation cover; by the fixing encapsulation of rubber securing member, envelope is irritated in the cavity that described silicon rubber insulation overlaps with box-like at the bottom of the epoxy becomes high-intensity epoxy resin and curing agent.
3. according to the described gapped type three phase combined over-voltage protector of claim 1, it is characterized in that: described gap body DC comprises into electrode and goes out electrode, advances electrode and is connected with zinc oxide valve plate, goes out electrode and is connected with bolt, advances electrode and goes out electrode gap and cooperate.
4. according to the described gapped type three phase combined over-voltage protector of claim 1, it is characterized in that: described gap body DC is made by copper material.
5. according to the described gapped type three phase combined over-voltage protector of claim 1; it is characterized in that: offer four disks at the bottom of the described epoxy on the box successively; disk is made up of three independent fanning strips; the center of disk offers the connecting hole that matches with bolt, and the first gap body DC1, the second gap body DC2, third space body DC3 and the 4th zinc oxide valve plate R4 are fixed at the bottom of the epoxy on the box by bolt and connecting hole successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205785918U CN201821096U (en) | 2010-10-26 | 2010-10-26 | Three-phase combined overvoltage protector with gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205785918U CN201821096U (en) | 2010-10-26 | 2010-10-26 | Three-phase combined overvoltage protector with gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201821096U true CN201821096U (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205785918U Expired - Fee Related CN201821096U (en) | 2010-10-26 | 2010-10-26 | Three-phase combined overvoltage protector with gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201821096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601163A (en) * | 2019-10-29 | 2019-12-20 | 安徽中电电气有限公司 | Special overvoltage protection device |
-
2010
- 2010-10-26 CN CN2010205785918U patent/CN201821096U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601163A (en) * | 2019-10-29 | 2019-12-20 | 安徽中电电气有限公司 | Special overvoltage protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20131026 |