CN203150324U - Upper cap used for anti-thunder post insulator - Google Patents
Upper cap used for anti-thunder post insulator Download PDFInfo
- Publication number
- CN203150324U CN203150324U CN 201320155101 CN201320155101U CN203150324U CN 203150324 U CN203150324 U CN 203150324U CN 201320155101 CN201320155101 CN 201320155101 CN 201320155101 U CN201320155101 U CN 201320155101U CN 203150324 U CN203150324 U CN 203150324U
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- China
- Prior art keywords
- discharging
- described discharge
- upper cap
- cap body
- discharge arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000012212 insulator Substances 0.000 title claims abstract description 36
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 abstract description 15
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 4
- 208000025274 Lightning injury Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an upper cap used for an anti-thunder post insulator. The upper cap used for the anti-thunder post insulator includes an upper cap body and discharging arms arranged on two sides of the upper cap body respectively and extending outward and inclining downward gradually. Discharging ends of the discharging arms are provided with tooth-shaped protrusions distributed in parallel and the tooth-shaped protrusions extend to the bottom faces of the discharging arms along the length direction of the discharging arms. The heights of the tooth-shaped protrusions are reduced gradually from the discharging ends. And in the middle part of the bottom faces of the discharging arms, the tooth-shaped protrusions are flush with the bottom faces of the discharging arms. Reinforcing ribs are arranged between the top faces of the discharging arms and outer side walls of the upper cap body. Since the structure with the tooth-shaped protrusions is adopted for the discharging ends according to the utility model, discharging voltage caused by lightning impulse of an insulator body of the anti-thunder post insulator is comparatively small in error and fluctuation ranges and is comparatively stable and reliable compared with a prior anti-thunder post insulator under a condition that discharging gaps are the same.
Description
Technical field
The utility model relates to a kind of last cap for lightning protection pillar insulator.
Background technology
Existing lightning protection pillar insulator as depicted in figs. 1 and 2, comprise insulator body 1, be located at the last cap 2 of upper end of insulator body 1 and the lower flange 3 of being located at insulator body 1 lower end, the both sides of last cap 1 are respectively equipped with and stretch out and downward-sloping discharge arm 21 gradually, the joining place of discharge arm 21 bottom surfaces and lateral surface is discharge end 22, this discharge end is positioned at the lower edge of discharge arm 21, find during actual the use, the discharge end 22 of this structure is bigger with the lightning impulse discharge voltage sum of errors fluctuation range of the insulator body 1 that is positioned at the below, influenced stability and the reliability of lightning protection pillar insulator lightning impulse discharge voltage in running greatly, serious threat the safe operation of power distribution network.
Summary of the invention
The purpose of this utility model provides a kind of last cap for lightning protection pillar insulator exactly in order to address the above problem, cap can improve stability and the reliability of lightning protection pillar insulator lightning impulse discharge voltage in running on this.
The purpose of this utility model is achieved in that
A kind of last cap for lightning protection pillar insulator of the present utility model, comprise the cap body and be located at the both sides of cap body on this respectively, stretch out and downward-sloping discharge arm gradually, the lateral surface of described discharge arm and the joining place of bottom surface form discharge end, described discharge end is positioned at the lower edge of described discharge arm, described discharge end place is provided with the dentation that distributes side by side, and this dentation extends on the bottom surface of described discharge arm along the length direction of described discharge arm, the height of described dentation reduces gradually from described discharge end, and during to the middle part of described discharge arm bottom surface, described dentation flushes with the bottom surface of described discharge arm, is provided with reinforcement between the lateral wall of described discharge arm end face and described upward cap body.
Above-mentioned a kind of last cap for lightning protection pillar insulator, wherein, the angle α of the lateral surface of described discharge arm and bottom surface is 120 °-150 °.
Above-mentioned a kind of last cap for lightning protection pillar insulator, wherein, the distance on described between the discharge end of cap body both sides is 200mm.
Above-mentioned a kind of last cap for lightning protection pillar insulator, wherein, the described upward lower edge of cap body and the vertical range of described discharge end are 7-12mm.
The utility model compared with prior art has following beneficial effect:
1. the utility model discharge end, compares with existing lightning protection pillar insulator under identical discharging gap situation owing to adopted the structure of dentation, and it is relative less, more reliable and stable with insulator body lightning impulse discharge voltage sum of errors fluctuation range;
2. discharge end of the present utility model is than the low 7-12mm in last cap lower edge, thereby makes that electric arc arc root was guaranteed to drop on the discharge tip when lightning impulse took place, and discharge path is more reliable;
3. go up the relative position control of discharge end of cap both sides at 200mm, be consistent with the breakaway poing (with the distance of insulator) of suspended insulated guide wire lightning-caused breaking, play a protective role better;
4. because the outer of discharge arm is greater more than insulator body full skirt external diameter, when taking place, reduced lightning stroke flashover the damage of thunderbolt arc energy to the porcelain insulator full skirt;
5. there are certain dispersion angle in the discharge facies lateralis brachii and the bottom surface that form discharge end, and this dispersion angle control is at 120 °-150 °, under the effect of electromagnetic field, the arc root of thunder and lightning electric arc can this disperse and on to outdiffusion, reduce the damage to discharge end;
6. going up between cap and the discharge arm has increased reinforcement, guarantees the dynamic thermal stability of product.
Description of drawings
Fig. 1 is the structural representation of existing lightning protection pillar insulator;
Fig. 2 is the end view of going up cap among Fig. 1;
Fig. 3 is structural representation of the present utility model;
Fig. 4 is the end view of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See also Fig. 3 and Fig. 4, the utility model is used for the last cap of lightning protection pillar insulator, comprise cap body 2 and be located at the both sides of cap body 2 on this respectively, stretch out and downward-sloping discharge arm 21 gradually, the lateral surface 25 of discharge arm 21 and the joining place of bottom surface 26 form discharge end 22, discharge end 22 is positioned at the lower edge of discharge arm 21, discharge end 22 places are provided with the dentation 24 that distributes side by side, and this dentation 24 extends on the bottom surface 26 of discharge arm 21 along the length direction of discharge arm 21, the height of dentation 24 reduces gradually from discharge end 22, and during to the middle part of arm 21 bottom surfaces 26 of discharging, dentation 24 flushes with the bottom surface 26 of discharge arm 21, be provided with reinforcement 23 between the lateral wall of discharge arm 21 end faces and last cap body 2, the lateral surface 25 of discharge arm 21 is 120 °-150 ° with the angle α of bottom surface 26, distance B between the discharge end 22 of last cap body 2 both sides is 200mm, and the vertical range H of the lower edge of last cap body 1 and discharge end 22 is 7-12mm.
Because discharge end 22 has adopted the structure of dentation 24, under identical discharging gap situation, compare with existing lightning protection pillar insulator, it is relative less, more reliable and stable with insulator body lightning impulse discharge voltage sum of errors fluctuation range;
The control of the relative position of the discharge end 22 of last cap 1 both sides is at 200mm, is consistent with the breakaway poing (with the distance of insulator) of suspended insulated guide wire lightning-caused breaking, plays a protective role better;
Because the outer of discharge arm 21 is greater more than insulator body full skirt external diameter, when taking place, reduced lightning stroke flashover the damage of thunderbolt arc energy to the porcelain insulator full skirt;
There are certain dispersion angle α in the lateral surface 25 and the bottom surface 26 that form the discharge arm 21 of discharge end 22, and this dispersion angle α control is at 120 °-150 °, under the effect of electromagnetic field, the arc root of thunder and lightning electric arc can this disperse and on to outdiffusion, reduce the damage to discharge end;
Increase reinforcement 23 between last cap 2 and the discharge arm 21, guaranteed the dynamic thermal stability of product.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (4)
1. last cap that is used for lightning protection pillar insulator, comprise the cap body and be located at the both sides of cap body on this respectively, stretch out and downward-sloping discharge arm gradually, the lateral surface of described discharge arm and the joining place of bottom surface form discharge end, described discharge end is positioned at the lower edge of described discharge arm, it is characterized in that, described discharge end place is provided with the dentation that distributes side by side, and this dentation extends on the bottom surface of described discharge arm along the length direction of described discharge arm, the height of described dentation reduces gradually from described discharge end, and during to the middle part of described discharge arm bottom surface, described dentation flushes with the bottom surface of described discharge arm, is provided with reinforcement between the lateral wall of described discharge arm end face and described upward cap body.
2. a kind of last cap for lightning protection pillar insulator as claimed in claim 1 is characterized in that, the angle α of the lateral surface of described discharge arm and bottom surface is 120 °-150 °.
3. a kind of last cap for lightning protection pillar insulator as claimed in claim 1 is characterized in that, the distance on described between the discharge end of cap body both sides is 200mm.
4. a kind of last cap for lightning protection pillar insulator as claimed in claim 1 is characterized in that, the described upward lower edge of cap body and the vertical range of described discharge end are 7-12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320155101 CN203150324U (en) | 2013-03-29 | 2013-03-29 | Upper cap used for anti-thunder post insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320155101 CN203150324U (en) | 2013-03-29 | 2013-03-29 | Upper cap used for anti-thunder post insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150324U true CN203150324U (en) | 2013-08-21 |
Family
ID=48977833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320155101 Expired - Lifetime CN203150324U (en) | 2013-03-29 | 2013-03-29 | Upper cap used for anti-thunder post insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203150324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151122A (en) * | 2013-03-29 | 2013-06-12 | 国家电网公司 | Cap for lightning-proof post insulator |
-
2013
- 2013-03-29 CN CN 201320155101 patent/CN203150324U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151122A (en) * | 2013-03-29 | 2013-06-12 | 国家电网公司 | Cap for lightning-proof post insulator |
| CN103151122B (en) * | 2013-03-29 | 2015-04-01 | 国家电网公司 | Cap for lightning-proof post insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130821 Effective date of abandoning: 20150401 |
|
| RGAV | Abandon patent right to avoid regrant |