CN109979694A - Reinforced column insulator - Google Patents
Reinforced column insulator Download PDFInfo
- Publication number
- CN109979694A CN109979694A CN201910346638.3A CN201910346638A CN109979694A CN 109979694 A CN109979694 A CN 109979694A CN 201910346638 A CN201910346638 A CN 201910346638A CN 109979694 A CN109979694 A CN 109979694A
- Authority
- CN
- China
- Prior art keywords
- porcelain
- conducting wire
- section
- groove
- patticoat
- 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.)
- Pending
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 47
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 84
- 238000002788 crimping Methods 0.000 claims abstract description 27
- 230000003373 anti-fouling effect Effects 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 238000000338 in vitro Methods 0.000 claims abstract description 4
- 230000002787 reinforcement Effects 0.000 claims description 11
- 210000002421 cell wall Anatomy 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 4
- 230000009194 climbing Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
- H01B17/145—Insulators, poles, handles, or the like in electric fences
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
- H01B17/16—Fastening of insulators to support, to conductor, or to adjoining insulator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
- H01B17/18—Supporting insulators for very heavy conductors, e.g. bus-bars, rails
Landscapes
- Insulators (AREA)
Abstract
A kind of reinforced column insulator includes insulator body, the upper end of insulator body is equipped with conducting wire fixed mechanism, the lower end of insulator body is equipped with fixing bolt, insulator body includes a porcelain knob, with several porcelain patticoats, insulator body is successively set as antifouling section from top to bottom, climbs electric section and fixed section, an antifouling big porcelain patticoat is equipped between antifouling section and conducting wire fixed mechanism, porcelain patticoat at described antifouling section includes successively spaced small porcelain patticoat and middle porcelain patticoat, and the porcelain knob body between adjacent porcelain patticoat is set as cylindrical；The porcelain patticoat climbed at electric section includes several middle porcelain patticoats, and the porcelain knob body between middle porcelain patticoat is set as taper type；The porcelain knob of fixed section is closely connected with a steel cap in vitro；A reinforcing rib is equipped on porcelain knob central axes.The present invention increases the intensity of insulator by reinforcing rib and taper type porcelain knob body, realizes being applicable in for different cross section conducting wire by conducting wire fixed mechanism, makes conducting wire not easily to fall off by lateral crimping fan groove or conducting wire pressing plate.
Description
Technical field
The present invention relates to power equipment, especially reinforced column insulator.
Background technique
With the rapid development of market economy, power supply reliability require it is higher and higher, enterprise development be unable to do without electric power can
By ensureing, residential electricity consumption requirement is more stringent, and the stability in high-tension line operational process determines the electric energy matter of Electricity customers
Amount, by Long-term analysis, the fault type occurred in high-tension distributing line During Process of Long-term Operation is varied, wherein insulator side
The failure rate in face occupies significant proportion, and the fault type of insulator mainly has insulation skirt fracture of root, conducting wire to take off from mounting groove
It falls.For the above focal issue, wherein main the very crux is analyzed, mainly insulator designs, no basis is led in structure
The changes and modifications of line cause insulator strength that cannot bear the high load that the lateral pressure in large-section lead operational process causes
And porcelain vase fracture of root occurs.Wire dropping main cause is the change of conducting wire, the relatively small many of past bare conductor diameter, conventional porcelain
Bottle installation groove depth can adapt to its requirement, and the big section insulated conductor weight of current application, diameter of wire all increase many, make
Insufficient at installation notch depth, conducting wire is easy to fall off from notch.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide, a kind of intensity is big, is suitable for not
With cross section wire and conducting wire novel upright post insulator not easily to fall off.
The technical problem to be solved by the present invention is to what is realized by technical solution below, a kind of reinforced column is exhausted
Edge attached bag includes insulator body, and the upper end of the insulator body is equipped with conducting wire fixed mechanism, the lower end of insulator body
Portion is equipped with fixing bolt,
Its main feature is that: insulator body includes a porcelain knob, and several porcelain patticoats of porcelain knob outer wall are arranged in,
The insulator body is successively set as antifouling section from top to bottom, climbs electric section and fixed section, at described antifouling section and leads
An antifouling big porcelain patticoat is equipped between line fixed mechanism,
Porcelain patticoat at described antifouling section includes successively spaced small porcelain patticoat and middle porcelain patticoat, and the porcelain knob body between adjacent porcelain patticoat is set
It is set to cylinder；
The porcelain patticoat climbed at electric section includes several middle porcelain patticoats, and the porcelain knob body between the middle porcelain patticoat is set as taper type, frustum
The small end of the porcelain knob body of shape is arranged and isometrical with the porcelain knob body at antifouling section upward；
The porcelain knob of the fixed section is closely connected with a steel cap in vitro, and the fixing bolt is fixed on the bottom of steel cap；
Vertical reinforcing rib is equipped on the central axes inside the porcelain knob.
The technical problem to be solved in the present invention can also further realize by the following technical programs, and the conducting wire is solid
Determining mechanism includes the fixed column being arranged at the top of porcelain knob, is offered at the top of fixed column and the vertically disposed use of the axis of porcelain knob
In the fixing groove I of fixed large-section lead, equipped with vertical with the central axes of porcelain knob for fixing the fixing groove of small section lead
II, fixing groove I and II notch of fixing groove are in decussation setting upward, and conducting wire pressing plate is equipped at notch.
The technical problem to be solved in the present invention can also further realize by the following technical programs, the conducting wire pressure
Plate includes a pressing plate, and the arc panel to match with fixing groove I, the arc panel and fixing groove I are equipped in the bottom of pressing plate
The cavity for accommodating conducting wire is cooperatively formed, is opened up in the two sides of arc panel and the junction of pressing plate along the direction of fixing groove I useful
In by the sliding groove of conducting wire pressing plate push-in fixing groove I, the distance of the slot bottom of the two sides of arc panel to fixing groove II is greater than or equal to
The diameter of small section lead, and the diameter of the small section lead less than twice.
The technical problem to be solved in the present invention can also further realize by the following technical programs, the fixing groove
I section is set as circular arc, and fixing groove I is open the interior slider bar for receiving and being formed and being cooperated with the sliding groove.
The technical problem to be solved in the present invention can also further realize by the following technical programs, and the conducting wire is solid
Determining mechanism includes the fixed column being arranged at the top of porcelain knob, is offered at the top of fixed column and the axis of porcelain knob is vertically disposed leads
Line places groove, and the notch that conducting wire places groove is upward, and conducting wire places the left and right sides cell wall of groove with the center line of fixed column
For axial symmetry setting, conducting wire is placed groove and is made of the crimping groove portion of the importing groove portion on top and lower part, and the crimping groove portion is set
There is a lower slot corresponding with the importing groove portion on top, the two sidewalls of lower slot are each provided with the lateral crimping fan groove an of indent, and two
A lateral crimping fan groove is one in front and one in back to two sides rotary setting, and after importing lower slot for conducting wire, insulator body rotation causes
The lateral crimping fan groove that conducting wire enters front and back, which is realized, to be fixed, wherein the slot height of lateral crimping fan groove is more than or equal to the straight of conducting wire
Diameter.
The technical problem to be solved in the present invention can also further realize by the following technical programs, two lateral crimpings
The walls parallel of fan groove, and distance between the two is equal with the distance between the two sidewalls of lower slot.
The technical problem to be solved in the present invention can also further realize by the following technical programs, and lateral crimping is fan-shaped
The angle of the cell wall of the lower slot of the cell wall and its joint of slot is set as 120 degree of -150 degree.
The technical problem to be solved in the present invention can also further realize by the following technical programs, the reinforcing rib
Bottom close to the bottom of fixed section, the top of reinforcing rib is not less than the top for climbing electric section.
The technical problem to be solved in the present invention can also further realize by the following technical programs, in the outer of reinforcing rib
Wall is obliquely installed reinforcement assistant reinforcement equipped with several upward.
Compared with prior art, the present invention passing through the setting of reinforcing rib and taper type porcelain knob body, the strong of insulator is increased
Degree realizes being applicable in for different cross section conducting wire by the different settings of conducting wire fixed mechanism, passes through the lateral of conducting wire fixed mechanism
The design of crimping fan groove or the design of conducting wire pressing plate are so that conducting wire is not easily to fall off.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of reinforced column insulator；
Fig. 2 is another structural schematic diagram of reinforced column insulator；
Fig. 3 is the top view of conducting wire fixed mechanism in Fig. 1；
Fig. 4 is the structural schematic diagram of conducting wire pressing plate；
Fig. 5 is the top view of conducting wire pressing plate；
Fig. 6 is the top view of conducting wire fixed mechanism in Fig. 2；
Fig. 7 is A-A cross-sectional view in Fig. 2.
Specific embodiment
The specific technical solution of the present invention described further below, in order to which those skilled in the art is further understood that
The present invention, without constituting the limitation to its right.
A kind of reinforced column insulator includes insulator body, and the upper end of the insulator body is solid equipped with conducting wire
Determine mechanism, the lower end of insulator body is equipped with fixing bolt 8,
Insulator body includes a porcelain knob, and several porcelain patticoats of porcelain knob outer wall are arranged in,
Insulator body is successively set as antifouling section from top to bottom, climbs electric section and fixed section, fixes in described antifouling section and conducting wire
An antifouling big porcelain patticoat 1 is equipped between mechanism, the porcelain patticoat at described antifouling section includes successively spaced small porcelain patticoat 3 and middle porcelain
Skirt 4, the porcelain knob body between adjacent porcelain patticoat are set as cylindrical；The porcelain patticoat climbed at electric section includes several middle porcelain patticoats 4, it is described in
Porcelain knob body between porcelain patticoat 4 is set as taper type, the small end of the porcelain knob body of taper type be arranged upward and with antifouling section at porcelain knob
Body is isometrical；The porcelain knob of the fixed section is closely connected with a steel cap 7 in vitro, and the fixing bolt 8 is fixed on the bottom of steel cap 7
Portion；Vertical reinforcing rib 9 is equipped on the central axes inside the porcelain knob.The bottom of reinforcing rib 9 close to the bottom of fixed section,
The top of reinforcing rib 9 is not less than the top for climbing electric section.
Conducting wire fixed mechanism includes the fixed column being arranged at the top of porcelain knob, and the axis with porcelain knob is offered at the top of fixed column
Line is vertically disposed for fixing the fixing groove I 11 of large-section lead, equipped with it is vertical with the central axes of porcelain knob be used to fix it is small
The fixing groove II 12 of cross section wire, fixing groove I 11 and II 12 notch of fixing groove are in decussation setting upward, are set at notch
There is conducting wire pressing plate 13.
Conducting wire pressing plate 13 includes a pressing plate 131, and the arc to match with fixing groove I 11 is equipped in the bottom of pressing plate 131
Plate 132, the arc panel 132 and fixing groove I 11 cooperatively form the cavity for accommodating conducting wire, two sides and pressure in arc panel 132
The junction of plate 131 offers the sliding groove for conducting wire pressing plate 13 to be pushed into fixing groove I 11 along the direction of fixing groove I 11
133, the distance of the slot bottom of the two sides of arc panel 132 to fixing groove II 12 is greater than or equal to the diameter of small section lead, and is less than
The diameter of twice of small section lead.
The section of fixing groove I 11 is set as circular arc, and receives to be formed in the opening of fixing groove I 11 and match with the sliding groove 133
The slider bar 31 of conjunction.
Conducting wire fixed mechanism includes the fixed column being arranged at the top of porcelain knob, and the axis with porcelain knob is offered at the top of fixed column
The vertically disposed conducting wire of line places groove, and the notch that conducting wire places groove is upward, conducting wire place the left and right sides cell wall of groove with
The center line of fixed column is axial symmetry setting, and conducting wire is placed groove and is made of the crimping groove portion of the importing groove portion on top and lower part,
The crimping groove portion is equipped with lower slot 21 corresponding with the importing groove portion on top, and the two sidewalls of lower slot 21 are each provided with an indent
Lateral crimping fan groove 22, two lateral crimping fan grooves 22 import lower slot for conducting wire one in front and one in back to two sides rotary setting
After 21, the lateral crimping fan groove 22 that insulator body rotation causes conducting wire to enter front and back realizes fixation, wherein lateral crimping is fanned
The slot height of shape slot 22 is more than or equal to the diameter of conducting wire.
The walls parallel of two lateral crimping fan grooves 22, and between the two sidewalls of distance and lower slot 21 between the two
It is equidistant, guarantees that conducting wire is able to maintain straight in lateral crimping fan groove 22 when insulator body rotation.
The angle of the cell wall of the lower slot 21 of the cell wall and its joint of lateral crimping fan groove 22 is set as 120 degree -150
Degree, preferably 135 degree.
It is equipped with several groups on the outer wall of reinforcing rib 9 and reinforces assistant reinforcement group, each group of reinforcement assistant reinforcement group is along reinforcing rib from upper
The equidistant uniform arrangement under；Every group of reinforcement assistant reinforcement group includes four evenly arranged on the same level periphery of reinforcing rib
Reinforce assistant reinforcement 10, described one end for reinforcing assistant reinforcement is fixed on reinforcing rib, and the other end is obliquely installed upward.
Claims (9)
1. the upper end of a kind of reinforced column insulator, including insulator body, the insulator body is solid equipped with conducting wire
Determine mechanism, the lower end of insulator body is equipped with fixing bolt,
It is characterized by: insulator body includes a porcelain knob, and several porcelain patticoats of porcelain knob outer wall are set,
The insulator body is successively set as antifouling section from top to bottom, climbs electric section and fixed section, at described antifouling section and leads
An antifouling big porcelain patticoat is equipped between line fixed mechanism,
Porcelain patticoat at described antifouling section includes successively spaced small porcelain patticoat and middle porcelain patticoat, and the porcelain knob body between adjacent porcelain patticoat is set
It is set to cylinder；
The porcelain patticoat climbed at electric section includes several middle porcelain patticoats, and the porcelain knob body between the middle porcelain patticoat is set as taper type, frustum
The small end of the porcelain knob body of shape is arranged and isometrical with the porcelain knob body at antifouling section upward；
The porcelain knob of the fixed section is closely connected with a steel cap in vitro, and the fixing bolt is fixed on the bottom of steel cap；
Vertical reinforcing rib is equipped on the central axes inside the porcelain knob.
2. reinforced column insulator according to claim 1, it is characterised in that: the conducting wire fixed mechanism includes setting
The fixed column at the top of porcelain knob is set, is offered at the top of fixed column vertically disposed for fixing big section with the axis of porcelain knob
The fixing groove I of conducting wire, equipped with vertical with the central axes of porcelain knob for fixing the fixing groove II of small section lead, fixing groove I with
II notch of fixing groove is in decussation setting upward, and conducting wire pressing plate is equipped at notch.
3. reinforced column insulator according to claim 2, it is characterised in that:
The conducting wire pressing plate includes a pressing plate, and the arc panel to match with fixing groove I is equipped in the bottom of pressing plate, described
Arc panel and fixing groove I cooperatively form the cavity for accommodating conducting wire, in the two sides of arc panel and the junction of pressing plate along fixing groove I
Direction offer for by the sliding groove of conducting wire pressing plate push-in fixing groove I, the slot bottom of the two sides of arc panel to fixing groove II
Distance is greater than or equal to the diameter of small section lead, and the diameter of the small section lead less than twice.
4. reinforced column insulator according to claim 2, it is characterised in that: the section of the fixing groove I is arranged
For circular arc, and fixing groove I is open the interior slider bar for receiving and being formed and being cooperated with the sliding groove.
5. reinforced column insulator according to claim 1, it is characterised in that: the conducting wire fixed mechanism includes setting
The fixed column at the top of porcelain knob is set, is offered at the top of fixed column and places groove with the vertically disposed conducting wire of the axis of porcelain knob,
The notch that conducting wire places groove is upward, and the left and right sides cell wall that conducting wire places groove is set using the center line of fixed column as axial symmetry
It sets, conducting wire is placed groove and is made of the crimping groove portion of the importing groove portion on top and lower part, and the crimping groove portion is equipped with and top
The corresponding lower slot of groove portion is imported, the two sidewalls of lower slot are each provided with the lateral crimping fan groove an of indent, two lateral crimpings
Fan groove is one in front and one in back to two sides rotary setting, after importing lower slot for conducting wire, before insulator body rotation causes conducting wire to enter
Lateral crimping fan groove afterwards, which is realized, to be fixed, wherein the slot height of lateral crimping fan groove is more than or equal to the diameter of conducting wire.
6. reinforced column insulator according to claim 5, it is characterised in that: the cell wall of two lateral crimping fan grooves
In parallel, and distance between the two is equal with the distance between the two sidewalls of lower slot.
7. reinforced column insulator according to claim 5, it is characterised in that: the cell wall of lateral crimping fan groove and its
The angle of the cell wall of the lower slot of joint is set as 120 degree of -150 degree.
8. reinforced column insulator according to claim 1, it is characterised in that: the bottom of the reinforcing rib is close to admittedly
Determine the bottom of section, the top of reinforcing rib is not less than the top for climbing electric section.
9. reinforced column insulator according to claim 1, it is characterised in that: be equipped on the outer wall of reinforcing rib several
It is obliquely installed reinforcement assistant reinforcement upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910346638.3A CN109979694A (en) | 2019-04-27 | 2019-04-27 | Reinforced column insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910346638.3A CN109979694A (en) | 2019-04-27 | 2019-04-27 | Reinforced column insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109979694A true CN109979694A (en) | 2019-07-05 |
Family
ID=67086655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910346638.3A Pending CN109979694A (en) | 2019-04-27 | 2019-04-27 | Reinforced column insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109979694A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB372571A (en) * | 1931-05-27 | 1932-05-12 | Ohio Brass Co | Improvements relating to electric insulators |
| JP2000322961A (en) * | 1999-05-10 | 2000-11-24 | Mitsubishi Electric Corp | Conductor supporting insulator |
| CN203055564U (en) * | 2013-01-15 | 2013-07-10 | 江西省电力科学研究院 | Fracture-resistant support insulator |
| CN203118687U (en) * | 2013-03-12 | 2013-08-07 | 江西省电力科学研究院 | High-voltage supporting insulator |
| CN203415318U (en) * | 2013-08-02 | 2014-01-29 | 湖南高强电瓷电器有限公司 | 500kV rod-like insulator |
| KR20150054277A (en) * | 2013-11-11 | 2015-05-20 | 한국전력공사 | One-touch type binder for insulator |
| DE202017103932U1 (en) * | 2016-07-08 | 2017-07-25 | Oskar Liebhart | Ceramic insulator |
| CN207052380U (en) * | 2017-06-26 | 2018-02-27 | 江西高鑫电瓷电器有限公司 | 10kV column type porcelain insulator of high-voltage line |
| CN207381184U (en) * | 2017-11-21 | 2018-05-18 | 南京电气（江西）电瓷有限公司 | A kind of subway line pillar insulator |
| CN207409322U (en) * | 2017-10-30 | 2018-05-25 | 江西利峰电瓷制造有限公司 | A kind of different angle suspended porcelain insulator of anti-pollution type |
| CN207517449U (en) * | 2017-12-05 | 2018-06-19 | 江西省星海电瓷制造有限公司 | A kind of high tenacity high voltage suspended insulator |
| CN207781295U (en) * | 2018-01-19 | 2018-08-28 | 江西正强电瓷电器有限公司 | A kind of ceramic insulator for high voltage |
| CN208027831U (en) * | 2018-04-08 | 2018-10-30 | 四川明鑫电器电瓷有限公司 | A kind of porcelain insulator of safety and stability |
| CN209947557U (en) * | 2019-04-27 | 2020-01-14 | 国网江苏省电力有限公司东海县供电分公司 | Reinforced stand column insulator |
-
2019
- 2019-04-27 CN CN201910346638.3A patent/CN109979694A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB372571A (en) * | 1931-05-27 | 1932-05-12 | Ohio Brass Co | Improvements relating to electric insulators |
| JP2000322961A (en) * | 1999-05-10 | 2000-11-24 | Mitsubishi Electric Corp | Conductor supporting insulator |
| CN203055564U (en) * | 2013-01-15 | 2013-07-10 | 江西省电力科学研究院 | Fracture-resistant support insulator |
| CN203118687U (en) * | 2013-03-12 | 2013-08-07 | 江西省电力科学研究院 | High-voltage supporting insulator |
| CN203415318U (en) * | 2013-08-02 | 2014-01-29 | 湖南高强电瓷电器有限公司 | 500kV rod-like insulator |
| KR20150054277A (en) * | 2013-11-11 | 2015-05-20 | 한국전력공사 | One-touch type binder for insulator |
| DE202017103932U1 (en) * | 2016-07-08 | 2017-07-25 | Oskar Liebhart | Ceramic insulator |
| CN207052380U (en) * | 2017-06-26 | 2018-02-27 | 江西高鑫电瓷电器有限公司 | 10kV column type porcelain insulator of high-voltage line |
| CN207409322U (en) * | 2017-10-30 | 2018-05-25 | 江西利峰电瓷制造有限公司 | A kind of different angle suspended porcelain insulator of anti-pollution type |
| CN207381184U (en) * | 2017-11-21 | 2018-05-18 | 南京电气（江西）电瓷有限公司 | A kind of subway line pillar insulator |
| CN207517449U (en) * | 2017-12-05 | 2018-06-19 | 江西省星海电瓷制造有限公司 | A kind of high tenacity high voltage suspended insulator |
| CN207781295U (en) * | 2018-01-19 | 2018-08-28 | 江西正强电瓷电器有限公司 | A kind of ceramic insulator for high voltage |
| CN208027831U (en) * | 2018-04-08 | 2018-10-30 | 四川明鑫电器电瓷有限公司 | A kind of porcelain insulator of safety and stability |
| CN209947557U (en) * | 2019-04-27 | 2020-01-14 | 国网江苏省电力有限公司东海县供电分公司 | Reinforced stand column insulator |
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