CN201378482Y - Novel high-energy ZnO lightning arrester with liquid evaporating cooling function - Google Patents
Novel high-energy ZnO lightning arrester with liquid evaporating cooling function Download PDFInfo
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- CN201378482Y CN201378482Y CN200920020445U CN200920020445U CN201378482Y CN 201378482 Y CN201378482 Y CN 201378482Y CN 200920020445 U CN200920020445 U CN 200920020445U CN 200920020445 U CN200920020445 U CN 200920020445U CN 201378482 Y CN201378482 Y CN 201378482Y
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- lightning arrester
- zno
- novel high
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- aluminium electrode
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- 239000007788 liquid Substances 0.000 title claims abstract description 32
- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 238000001704 evaporation Methods 0.000 title claims abstract description 15
- 238000009413 insulation Methods 0.000 claims abstract description 33
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 32
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003822 epoxy resin Substances 0.000 claims abstract description 31
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 31
- 239000002826 coolant Substances 0.000 claims abstract description 11
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 9
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 239000004411 aluminium Substances 0.000 claims description 30
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 25
- 230000008020 evaporation Effects 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 239000004945 silicone rubber Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000005347 demagnetization Effects 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000007257 malfunction Effects 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 46
- 239000011787 zinc oxide Substances 0.000 description 23
- 238000005516 engineering process Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009422 external insulation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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Abstract
The utility model discloses a novel high-energy ZnO lightning arrester with a liquid evaporating cooling function. The novel high-energy ZnO lightning arrester overcomes the weaknesses of the prior high-energy ZnO lightning arrester that the absorbable energy is limit and a great amount of lightning arresters are connected with each other in parallel to use, and is applied to the current restriction of the short-circuit malfunction and the demagnetization and over-voltage protection of the rotor of the power generator in the electric power system. The novel high-energy ZnO lightning arrester comprises a composite silicon rubber umbrella case, wherein an epoxide resin insulation bushing is arranged inside the composite silicon rubber umbrella case, a lightning arrester core rod which is formed by overlapping a plurality of ZnO resistance valve plates is fixed inside the epoxide resin insulation bushing, the upper end part of the lightning arrester core rod is provided with an upper aluminum electrode and the lower end part is provided with a lower aluminum electrode, a spring compression device of the lightning arrester core rod is also fixed inside the epoxide resin insulation bushing, the epoxide resin insulation bushing is sealed, high-insulation liquid evaporating cooling medium is filled inside the epoxide resin insulation bushing, the core rod is integrally steeped inside the liquid cooling medium, and a cooling device is also arranged inside the lightning arrester core rod.
Description
Technical field
The utility model relates to a kind of lightning arrester; relate in particular to a kind of employing liquid evaporation cooling technology, be applied to the short-circuit current restriction in the electric power system and the novel high-energy ZnO lightning arrester that possesses liquid evaporation cooling function of generator amature demagnetization and overvoltage protection.
Background technology
Along with the continuous expansion of electric power system transmission capacity, the grid short circuit levels of current also constantly increases, and limiting short-circuit current has become in the modern power network development a unavoidable great technology and economic problems.And based on the economical fault current limiter of the series resonance of zinc oxide arrester, not only can be restricted to reduced levels to short circuit current, and have the operational reliability height, need not to add control and realize automatic switching, cheap and technical and economic performance obviously advantage such as good being expected in high-voltage fence, at first to obtain practicality.High-energy ZnO lightning arrester is the key technology of the economical fault current limiter of series resonance, and the quality of this technology has determined the quality of fault current limiter technology.Simultaneously, high-energy ZnO lightning arrester also is the vital dissipative cell during generator amature demagnetization and overvoltage protection are used.
ZnO arrester is as the critical component of the economical fault current limiter of series resonance, and when system breaks down, the short circuit current that is several times as much as load current will flow through series connection capacitor in the line, and with the increase of fault current, the voltage on the capacitor increases rapidly.For avoiding overvoltage of capacitor to damage, usually ZnO arrester in parallel on electric capacity, its high speed motion can be limited in capacitor voltage at both ends the residual voltage level of lightning arrester with capacitor short-circuit, simultaneously the reactor system that seals in is realized current limliting, and effectively suppress the first peak value of short circuit current.During the system failure, because the nonlinear resistance property of ZnO arrester makes fault current mainly flow through from lightning arrester, it must the reasonable time in (as 80ms) system short-circuit electric current after bearing restriction, need to absorb huge short circuit energy, cause the self-heating temperature to raise.The short circuit energy that lightning arrester can bear injects and temperature has certain limit, when surpassing this limit, may cause Explosion of on Arrester, has influence on the security of operation of fault current limiter.Therefore fault current limiter is high to the transient state energy absorption ability requirement of lightning arrester, and the common converting equipment absorbable finite energy of metal oxide arrester absorbs the excessive problem of energy for solving lightning arrester, and is necessary with a large amount of lightning arrester parallel connection uses.Same owing to energy consumption, be used for the nonlinear resistance of generator amature demagnetization and overvoltage protection at present, its inside all is that a large amount of ZnO valve plates constitutes by connection in series-parallel.Under the situation of multiple branch circuit lightning arrester parallel connection, it is unequal that small voltage differences will cause serious electric current to distribute, thereby cause the seriously unbalanced of energy distribution, and controlling every column current distribution becomes the lightning arrester assembly The key problem of structural design.Rely on the method for a large amount of lightning arrester multicolumn parallel connection to solve energy consumption problem, this all has very big difficulty technically and economically.
The utility model content
The purpose of this utility model is exactly in order to solve above-mentioned technology and economic problems; a kind of novel high-energy ZnO lightning arrester that possesses liquid evaporation cooling function is provided; it introduces the liquid medium evaporation cooling technique; to overcome the absorbable finite energy of existing high energy ZnO arrester; necessary a large amount of shortcomings of using in parallel, economy, the reliability of raising fault current limiter and generator amature demagnetization and overvoltage protection system.
For achieving the above object, the technical scheme that the utility model adopted is:
A kind of novel high-energy ZnO lightning arrester that possesses liquid evaporation cooling function, it comprises the composite silicone rubber umbrella cover, its inside is provided with the epoxy resins insulation sleeve, the lightning arrester plug that is formed by some ZnO resistor valve sheet closed assemblies is installed at epoxy resins insulation sleeve internal fixation, described lightning arrester plug upper end is fixed with the aluminium electrode, described lightning arrester plug bottom is fixed with down the aluminium electrode, the fixing spring attachment of lightning arrester plug also in the epoxy resins insulation sleeve, it is characterized in that: described epoxy resins insulation sleeve seal, be full of high iknsulating liquid evaporative cooling medium in it, described plug integral body is immersed in the liquid cooling medium, is provided with cooling device in the lightning arrester plug simultaneously.
Described cooling device is several annular red copper conductive cushion blocks, each annular red copper conductive cushion block places between two ZnO resistor valve sheets, become the lightning arrester plug with the common closed assembly of ZnO resistor valve sheet, on each annular red copper conductive cushion block, radially be processed with liquid in-out cooling through hole simultaneously.
Described spring attachment be installed in down between aluminium electrode and the lightning arrester plug lower end and be installed in the aluminium electrode and lightning arrester plug upper end between holddown spring.
Described going up on aluminium electrode and the following aluminium electrode is equipped with seal.
The described footpath pressure that outwards imperial palace is little that leaves on the sealed insulation sleeve lining discharges notch.
The described aluminium electrode of going up is connected with high-voltage connection metal connection post by the epoxy resins insulation sleeve; Following aluminium electrode then is connected with the ground connection flange by the epoxy resins insulation sleeve.
High-voltage connection metal connection post passes the same aluminium electrode of insulating sleeve by fixing hole and links to each other, and the ground connection flange passes the epoxy resins insulation sleeve with the aluminium electrode is continuous down by bolt.
The utility model becomes the lightning arrester plug with the annular in groups high-energy ZnO resistor valve sheet closed assembly that test prepares, during closed assembly, laminate one and be processed with the annular red copper conductive cushion block that liquid in-out cools off through hole between two ZnO resistor valve sheets, its size is consistent with the ZnO resistor valve sheet.Upper and lower aluminium electrode is equipped with at lightning arrester plug two ends, is fixed in by spring attachment in the epoxy resins insulation sleeve of sealing.Be equipped with seal on the upper and lower aluminium electrode, guaranteed the sealing property of lightning arrester.In the epoxy resins insulation sleeve of sealing, be full of high iknsulating liquid evaporative cooling medium, lightning arrester plug integral body is immersed in the liquid cooling medium, when lightning arrester passes through very big short circuit current, the heating of ZnO resistor valve sheet, and liquid medium vaporization heat absorption, thereby reduce the temperature of lightning arrester plug center fast, preventing that the ZnO resistor valve sheet is overheated burns, and has improved lightning arrester transient state energy absorption ability greatly.On sealing epoxy resin insulating sleeve inwall, leave pressure and discharge notch.It is the outwards little horn mouth of imperial palace of footpath that pressure discharges notch.When the lightning arrester internal short-circuit, easilier inner moment is produced very high air pressure discharge, the pressure release performance is better.High-voltage connection metal connection post passes the same aluminium electrode of epoxy resins insulation sleeve by fixing hole and links to each other, and the ground connection flange passes the epoxy resins insulation sleeve with the aluminium electrode is continuous down by bolt.Epoxy resins insulation sleeve external insulation is a composite silicone rubber material umbrella cover, adopts composite silicone rubber overcoat manufacturing process, and the major ingredient of material selection is a methyl vinyl silicone rubber, and main chain is for containing silicon oxygen bond.
The beneficial effects of the utility model are: rational in infrastructure, can reduce the temperature of plug center fast, and preventing that valve block is overheated burns, and has improved lightning arrester transient state energy absorption ability greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that annular red copper conductive cushion block is processed with liquid in-out cooling through-hole structure schematic diagram;
Fig. 3 is the vertical view of Fig. 2.
In the drawings, 1, lightning arrester plug 2, ZnO resistor valve sheet 3, annular red copper conductive cushion block 4, liquid in-out cooling through hole 5, go up aluminium electrode 6, aluminium electrode 7, seal 8, spring attachment 9, epoxy resins insulation sleeve 10, high iknsulating liquid evaporative cooling medium 11, composite silicone rubber material umbrella cover 12, high-voltage connection metal connection post 13 ground connection flanges 14 pressure discharge notch down.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Among Fig. 1, lightning arrester plug 1 is formed by annular ZnO resistor valve sheet 2 closed assemblies in groups, laminate annular red copper conductive cushion block 3 between the ZnO resistor valve sheet 2, radially be processed with liquid in-out cooling through hole 4 on the annular red copper conductive cushion block 3, as Fig. 2, shown in Figure 3, aluminium electrode 5 and following aluminium electrode 6 are equipped with in lightning arrester plug 1 two ends, all be equipped with seal 7 on the two aluminium electrodes, on, following aluminium electrode is fixed in the epoxy resins insulation sleeve 9 of sealing with lightning arrester plug 1 by spring attachment 8, in the epoxy resins insulation sleeve 9 of sealing, be full of high iknsulating liquid evaporative cooling medium 10, lightning arrester plug 1 integral body is immersed in the high iknsulating liquid evaporative cooling medium 10, and epoxy resins insulation sleeve 9 external insulations are composite silicone rubber material umbrella cover 11.High-voltage connection metal connection post 12 links to each other by fixing hole epoxy resins insulation sleeve 9 the same aluminium electrodes 5, and ground connection flange 13 passes epoxy resins insulation sleeve 9 with aluminium electrode 6 is continuous down by bolt.On epoxy resins insulation sleeve 9 inwalls, leave the footpath pressure that outwards imperial palace is little and discharge notch 14.
Claims (6)
1. novel high-energy ZnO lightning arrester that possesses liquid evaporation cooling function, it is characterized in that, it comprises the composite silicone rubber umbrella cover, its inside is provided with the epoxy resins insulation sleeve, the lightning arrester plug that is formed by some ZnO resistor valve sheet closed assemblies is installed at epoxy resins insulation sleeve internal fixation, described lightning arrester plug upper end is fixed with the aluminium electrode, described lightning arrester plug bottom is fixed with down the aluminium electrode, the fixing spring attachment of lightning arrester plug also in the epoxy resins insulation sleeve, described epoxy resins insulation sleeve seal, be full of high iknsulating liquid evaporative cooling medium in it, described plug integral body is immersed in the liquid cooling medium, is provided with cooling device in the lightning arrester plug simultaneously.
2. the novel high-energy ZnO lightning arrester that possesses liquid evaporation cooling function as claimed in claim 1, it is characterized in that, described cooling device is several annular red copper conductive cushion blocks, each annular red copper conductive cushion block places between two ZnO resistor valve sheets, become the lightning arrester plug with the common closed assembly of ZnO resistor valve sheet, on each annular red copper conductive cushion block, radially be processed with liquid in-out cooling through hole simultaneously.
3. the novel high-energy ZnO lightning arrester that possesses liquid evaporation cooling function as claimed in claim 1, it is characterized in that, described spring attachment be installed in down between aluminium electrode and the lightning arrester plug lower end and be installed in the aluminium electrode and lightning arrester plug upper end between holddown spring.
4. the novel high-energy ZnO lightning arrester that possesses liquid evaporation cooling function as claimed in claim 1 is characterized in that, described going up on aluminium electrode and the following aluminium electrode is equipped with seal.
5. the novel high-energy ZnO lightning arrester that possesses liquid evaporation cooling function as claimed in claim 1 is characterized in that, the described footpath pressure that outwards imperial palace is little that leaves on the sealed insulation sleeve lining discharges notch.
6. the novel high-energy ZnO lightning arrester that possesses liquid evaporation cooling function as claimed in claim 1 is characterized in that, the described aluminium electrode of going up is connected with high-voltage connection metal connection post by the epoxy resins insulation sleeve; Following aluminium electrode then is connected with the ground connection flange by the epoxy resins insulation sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920020445U CN201378482Y (en) | 2009-04-07 | 2009-04-07 | Novel high-energy ZnO lightning arrester with liquid evaporating cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920020445U CN201378482Y (en) | 2009-04-07 | 2009-04-07 | Novel high-energy ZnO lightning arrester with liquid evaporating cooling function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201378482Y true CN201378482Y (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920020445U Expired - Lifetime CN201378482Y (en) | 2009-04-07 | 2009-04-07 | Novel high-energy ZnO lightning arrester with liquid evaporating cooling function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201378482Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533694B (en) * | 2009-04-07 | 2012-03-14 | 山东电力研究院 | Novel high-energy ZnO lightning arrester with liquid evaporation cooling function |
| CN114907111A (en) * | 2022-05-07 | 2022-08-16 | 吉林昱丰电气科技有限公司 | High-energy high-residual-voltage-ratio nonlinear device and preparation method thereof |
-
2009
- 2009-04-07 CN CN200920020445U patent/CN201378482Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533694B (en) * | 2009-04-07 | 2012-03-14 | 山东电力研究院 | Novel high-energy ZnO lightning arrester with liquid evaporation cooling function |
| CN114907111A (en) * | 2022-05-07 | 2022-08-16 | 吉林昱丰电气科技有限公司 | High-energy high-residual-voltage-ratio nonlinear device and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130319 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130319 Address after: 250002 Shandong Province, Ji'nan City Central Ring Road East Patentee after: Shandong Research Inst. of Electric Power Patentee after: State Grid Corporation of China Address before: 250002 Shandong Province, Ji'nan City Central Ring Road East Patentee before: Shandong Research Inst. of Electric Power |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100106 |