CN209544048U - A kind of arrester - Google Patents
A kind of arrester Download PDFInfo
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- CN209544048U CN209544048U CN201920252382.5U CN201920252382U CN209544048U CN 209544048 U CN209544048 U CN 209544048U CN 201920252382 U CN201920252382 U CN 201920252382U CN 209544048 U CN209544048 U CN 209544048U
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- arrester
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Abstract
The utility model discloses a kind of arresters, including core, top electrode, lower electrode and composite sheath, core includes several resistor discs and insulated support, top electrode and lower electrode are separately positioned on core both ends, top electrode, lower electrode and several resistor discs are connected as one by insulated support, core inside and the gapless between top electrode and lower electrode；Top electrode and lower electrode are boss structure, including platform part and protrusion, and connecting line bolt is arranged close to core, protrusion end face center in platform part；Composite sheath is silicon rubber umbrella skirt.The arrester structure is simple and stablizes, mechanical strength and electric property is high, it can be achieved that Life cycle is non-maintaining, high production efficiency, and manufacturing cost is low.
Description
Technical field
The utility model relates to insulator arrangement field of transmitting electricity, specifically a kind of arrester.
Background technique
Arrester be on substation and transmission line of electricity it is essential prevent overvoltage (attack directly lightning overvoltage, inductive lightning mistake
Voltage, switching overvoltage etc.) protective device, the reasonable setting of arrester greatly reduces overvoltage to power transmission and transforming equipment
Damage.
Currently, arrester is widely used in power industry.The 35kV of early stage and the arrester of following level, knot
Structure is usually the glass fiber or alkali-free glass strap that internal zinc oxide resistance sheet is externally wrapped with infiltration epoxy resin,
It is formed through hot setting, the glass fiber or alkali-free glass cloth band after solidification play the role of bearing mechanical force.Or it will
Glass fiber and alkali-free glass strap replace with Du Lidun material, are coated on the outside of resistor disc, are played in the form of molding
Insulation and the effect of mechanical strength.
Present inventor has found the arrester of above structure in long-term R&D process, in winding glass fibre
When silk or alkali-free glass strap, if resistor disc end does not compress, it will lead to and penetrate into epoxy resin between resistor disc, lead
Poor contact between resistor disc is caused, causes arrester abnormal.The lightning arrester core body for using the structure simultaneously, because of glass fiber or
The winding layer number of person's alkali-free glass strap is limited, cannot be fully wrapped around by resistor disc, glass fiber or alkali-free glass strap
Between there are biggish gaps, after External infusion silicon rubber umbrella skirt, cause silicon rubber penetrate into gap, it is possible to cause partial discharge.
And the mechanical strength of Du Lidun material is low, is not able to satisfy the mechanical property requirements of arrester.
Utility model content
In view of the deficiencies of the prior art, the purpose of the utility model is to provide a kind of arrester, the arrester structure is simple
And stablize, mechanical strength and electric property are high, it can be achieved that Life cycle is non-maintaining, high production efficiency, and manufacturing cost is low.
To realize that above-mentioned purpose of utility model, technological means used by the utility model are as follows: a kind of arrester, including
Core, top electrode, lower electrode and composite sheath, core include several resistor discs and insulated support, and top electrode and lower electrode divide
Top electrode, lower electrode and several resistor discs She Zhi not be connected as one at core both ends, insulated support, inside core and
The gapless between top electrode and lower electrode；Top electrode and lower electrode are boss structure, including platform part and protrusion, platform part
Close to core, connecting line bolt is arranged in protrusion end face center；Composite sheath is silicon rubber umbrella skirt.
Above-mentioned arrester is made due to being connected as one top electrode, lower electrode and several resistor discs using insulated support
Core inside and the gapless between top electrode and lower electrode, simplify the structure and technique of arrester, to make manufacture letter
It is single, it is easy to assembly, can be effectively reduced manufacturing cost, meanwhile, avoid because resistor disc end does not compress, cause resistor disc it
Between penetrate into resin or silicon rubber, lead to poor contact between resistor disc, to make the phenomenon of arrester exception, can satisfy and keep away
The electric property and requirement of mechanical strength of thunder device.
Preferably, insulated support is hollow insulation tube, and platform part is arranged card slot and is inserted into for hollow insulation tube.This is hollow absolutely
Edge pipe is capable of providing insulation protection and mechanical support and component connection function.It is further preferable that top electrode and lower electrode use
Compression joint technique is connect with hollow insulation tube.The bonding strength of compression joint technique is high.It is further preferable that hollow insulation tube is hollow pultrusion
Glass reinforced plastic pipe.The hollow insulation tube inside of high mechanical strength on hollow pulling and extruding glass steel tube axial direction, preforming is equipped with
Resistor disc, stable structure, intensity is high, simple process, high production efficiency.
Preferably, insulated support is insulation mandrel, and several resistor discs are hollow resistor disc, the centre bore of hollow resistor disc
Diameter is equal with the diameter of insulation mandrel, and insulation mandrel passes through hollow resistor disc.The insulation mandrel can play offer mechanical support
And the effect efficiently connected between component.
It is further preferable that the part that all hollow resistor discs are extended at insulation mandrel both ends is provided with external screw thread, platform part
Matched internal screw thread is provided centrally with to be threadedly coupled with insulation mandrel.
It is further preferable that the outer diameter of platform part is equal with the outer diameter of core, the outer diameter of protrusion is less than the outer diameter of platform part.
Arrester overall structure is simple, convenient for the molding of composite sheath.
It is further preferable that insulation mandrel is glass reinforced plastic pultrusion plug.Glass reinforced plastic pultrusion plug is used with electrode and is threadedly coupled,
With being connected firmly, the advantages of structural strength is high, simple process, high production efficiency.
Preferably, composite sheath uses general injection high-temperature silicon disulfide rubber moulding process, and composite sheath coats outside core
Partial region under surface, platform part and protrusion end surface.The cladding region of composite sheath can guarantee the sealing of arrester
Performance prevents steam to be deep into inside core, impacts to the electric property of arrester.The composite sheath has good resistance to
Ageing properties, the anti-pollution characteristic for greatly improving arrester and electric property are, it can be achieved that Life cycle is non-maintaining.
Preferably, resistor disc is non linear metal oxide resistor piece.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the arrester 100 of the utility model embodiment one；
Fig. 2 is the schematic cross-sectional view of the arrester 200 of the utility model embodiment two；
Specific embodiment
According to requiring, specific embodiment of the present utility model will be disclosed here.It is to be understood, however, that institute here
The embodiment of disclosure is only the typical example of the utility model, can be presented as various forms.Therefore, it discloses here
Detail be not to be considered as limiting, and be merely possible to the basis of claim and as instructing this field
Technical staff differently applies the representative basis of the utility model in any appropriate mode in practice, including using here
Disclosed various features simultaneously combine the feature that may do not disclose clearly here.
Embodiment one:
As shown in Figure 1, the arrester 100 of the present embodiment includes core 11, top electrode 12, lower electrode 13 and composite sheath
15, core 11 includes several resistor discs 112 and insulated support, and insulated support is hollow insulation tube 111, and top electrode 12 is under
Electrode 13 is separately positioned on 11 both ends of core, and hollow insulation tube 111 connects top electrode 12, lower electrode 12 and several resistor discs 112
It is connected in one, 11 inside of core and the gapless between top electrode 12 and lower electrode 13, in the present embodiment, resistor disc 112
Quantity be three, in other embodiments, the quantity of resistor disc 112 and single length are unrestricted, the totality after laminating
Length is able to satisfy gapless requirement, and the diameter of each resistor disc 112 is all the same, and diameter is slightly less than hollow insulation tube
111 internal diameter, upper and lower end face are smooth.Wherein, the meaning being slightly less than is the diameter of all resistor discs 112 and hollow insulation tube 111
Internal diameter differ 0.5~1mm, i.e., resistor disc 112 can be preferably installed to 111 inside of hollow insulation tube and gapless.
Lower electrode 13 is symmetrical arranged centered on 11 central cross-section of core with top electrode 12, and structure is identical.With top electrode 12
For carry out structure description.
Top electrode 12 is boss structure, including platform part 122 and protrusion 121, and platform part 122 is close to core 11, position
It is connected on the end face of resistor disc 112 in the end face in hollow insulation tube 111.End face of the protrusion 121 far from 11 side of core
It is connected with connecting line bolt 14.Specifically, 121 end face center of protrusion is provided with screw hole 124, connecting line bolt 14 is and screw hole 124
Matched bolt is threadedly attached on protrusion 121.In other embodiments, it can also be taken between screw hole 124 and bolt
It is threadedly coupled and is glued the mode of dual connection, improves the reliability of connection.In addition, to be also possible to other common for connecting line bolt 14
Connecting terminal, such as using structures such as the conducting rods that is directly welded on protrusion 121.
Alternatively, connecting line bolt 14 or T-type connecting terminal, the cross sectional shape of T-type connecting terminal is T-type, a part
It is the disk being bonded with protrusion 121 or rounded cap, the cylinder centered on another part, two parts are integrally formed, disk
Or mutually matched screw hole is arranged in rounded cap and 121 end face of protrusion, T-type connecting terminal passes through bolt and 121 phase of protrusion
Even.
Platform part 122 is arranged card slot 123 and is inserted into for hollow insulation tube 111.Card slot 123 is annular slot, and card slot 123 is located at
Platform part 122 matches close to one end of core 11, the size of card slot 123 and the size of hollow insulation tube 111, i.e. card slot 123
Internal diameter be slightly less than the internal diameter of hollow insulation tube 111, the outer diameter of card slot 123 is slightly larger than the outer diameter of hollow insulation tube 111.Wherein,
The meaning being slightly less than is that the size of two components differs 0.5~1mm, i.e. two components can be just bonded and gapless.
The hollow insulation tube 111 is capable of providing insulation protection and mechanical support and component connection function.
Top electrode 12 and lower electrode 13 are connect using compression joint technique with hollow insulation tube 111.First by hollow insulation tube 111
One end is inserted into the card slot 123 of top electrode 12, then top electrode 12 is put into press-connection machine, is crimped；Then by all electricity
Resistance piece 112 is fitted into hollow insulation tube 111, and hollow 111 other end of insulation tube is inserted into the card slot of lower electrode 13, resistance is made
Piece 112 uses and identical compression joint technique at top electrode 12 after being compacted.The bonding strength of compression joint technique is high, certainly, at other
It, can also be using splicing and/or compression joint technique in embodiment.Hollow insulation tube 111 is hollow pulling and extruding glass steel tube, hollow pultrusion
High mechanical strength on glass reinforced plastic pipe axial direction.Resistor disc 112, knot are housed inside the hollow insulation tube 111 of preforming
Structure is stablized, and intensity is high, simple process, high production efficiency.Resistor disc 112 is non linear metal oxide resistor piece.Specifically, golden
Belonging to oxide resistor piece is by semiconductor oxide zinc and other metal oxides (such as oxidation brill, manganese oxide) in high temperature (1000
DEG C or more) under be sintered.
Composite sheath 15 is silicon rubber umbrella skirt.Composite sheath 15 uses general injection high-temperature silicon disulfide rubber moulding process,
Composite sheath 15 coats hollow 111 outer surface of insulation tube, under 121 end face of platform part 122 and protrusion partial region.It is compound
The cladding region of housing 15 can guarantee the sealing performance of arrester, prevent steam to be deep into inside core 11, to arrester
Electric property impacts.The composite sheath 15 has good ageing-resistant performance, greatly improves the resistance to soiling of arrester 100
It can be with electric property, it can be achieved that Life cycle is non-maintaining.
The arrester 100 of the present embodiment, due to using hollow insulation tube 111 by top electrode 12, lower electrode 13 and several electricity
Resistance piece 112 is connected as one, and is made 11 inside of core and the gapless between top electrode 12 and lower electrode 13, is simplified arrester
100 structure and technique, thus make to be simple to manufacture, it is easy to assembly, it can be effectively reduced manufacturing cost.Meanwhile avoiding resistance
112 end of piece compresses because not having and directly contacts with liquid resin or silicon rubber, cause to penetrate between resistor disc 112 resin or
Person's silicon rubber, the case where causing poor contact between resistor disc 112, so as to avoid the phenomenon that arrester 100 is abnormal, Neng Gouman
The electric property and requirement of mechanical strength of sufficient arrester 100.
Embodiment two:
As shown in Fig. 2, the arrester 200 of the present embodiment, arrester 200 includes core 21, top electrode 22,23 and of lower electrode
Composite sheath 25.Core 21 includes several resistor discs 212 and insulated support, and insulated support is insulation mandrel 211, Ruo Gan electricity
Resistance piece 212 is hollow resistor disc, and the center-hole diameter of hollow resistor disc is equal with the diameter of insulation mandrel 211, insulation mandrel 211
It is arranged in the centre bore of resistor disc 212.Top electrode 22 and lower electrode 23 are separately positioned on 21 both ends of core, insulation mandrel 211
Top electrode 22, lower electrode 22 and several resistor discs 212 are connected as one, the inside of core 21 and with top electrode 22 and lower electrode
Gapless between 23, in the present embodiment, the quantity of resistor disc 212 is three.In other embodiments, the quantity of resistor disc 212
Unrestricted with single length, the overall length after laminating is able to satisfy gapless requirement, each resistor disc 212 it is straight
Diameter is identical, and upper and lower end face is smooth.
Lower electrode 23 is symmetrical arranged centered on 21 central cross-section of core with top electrode 22, and structure is identical.With top electrode 22
For carry out structure description.
Top electrode 22 is boss structure, including platform part 222 and protrusion 221, and platform part 222 is close to core 21.Protrusion
221 end face of portion is connected with connecting line bolt 24, and 221 end face center of protrusion is provided with screw hole 224, and connecting line bolt 24 is and screw hole
224 matched bolts.
The outer diameter of platform part 222 is equal with the outer diameter of core 21, and the outer diameter of protrusion 221 is less than the outer diameter of platform part 222.
200 overall structure of arrester is simple, convenient for the molding of composite sheath 25, and composite sheath 25 and core 21, top electrode 22 and under
Gap and defect are not likely to produce between electrode 23, composite sheath 25 is silicon rubber umbrella skirt.
Insulation mandrel 211 can be glass reinforced plastic winding plug or glass reinforced plastic pultrusion plug, and glass reinforced plastic pultrusion plug is in axis
Upward high mechanical strength.The insulation mandrel 211 is capable of providing mechanical support and plays the role of efficiently connecting between component.
The part that all resistor discs 212 are extended at 211 both ends of insulation mandrel is provided with external screw thread, and 222 center of platform part is set
Matched internal screw thread 223 is equipped with to be threadedly coupled with insulation mandrel 211.Insulation mandrel 211 and top electrode 22 and lower electrode 23 can be with
Using being glued and/or being threadedly coupled, the connection type in the present embodiment is using threaded connection.The technical process of threaded connection
Are as follows: top electrode 22 is inserted into 211 one end of insulation mandrel, rotation is threadedly coupled；Connect it is firm after by 212 sets of all resistor discs
It is located on insulation mandrel 211；211 other end of insulation mandrel is inserted into lower electrode 23, carries out screw thread company in the same way
It connects, until all resistor discs 212 are in the state being compacted.It is threadedly coupled to have and be connected firmly, structural strength is high, technique letter
The advantages of list, high production efficiency.
The arrester 200 of the present embodiment, due to using insulation mandrel 211 by top electrode 22, lower electrode 23 and several resistance
Piece 212 is connected as one, and the bonding strength of insulation mandrel 211 is high, and hollow 212 end of resistor disc can be compacted, and make core
21 inside and the gapless between top electrode 22 and lower electrode 23, composite sheath forms not to be penetrated between space-time heart resistor disc
Silicon rubber leads to poor contact between resistor disc, abnormal so as to cause arrester 200.200 structure of arrester is simple and stablizes,
Mechanical strength and electric property are high, it can be achieved that Life cycle is non-maintaining, high production efficiency, and manufacturing cost is low.
The technology contents and technical characterstic of the utility model have revealed that as above, it being understood, however, that in the utility model
Under creative ideas, those skilled in the art can make various changes and improve to above structure and material, including here individually
Disclosure or the combination of claimed technical characteristic, it will be apparent that other combinations including these features.These deformations and/or combination
It each falls in technical field involved in the utility model, and falls into the protection scope of the utility model claims.
Claims (10)
1. a kind of arrester, including core, top electrode, lower electrode and composite sheath, it is characterised in that: the core includes several
Resistor disc and insulated support, the top electrode and the lower electrode are separately positioned on the core both ends, the insulating supporting
The top electrode, the lower electrode and several resistor discs are connected as one by part, inside the core and with it is described on
Gapless between electrode and the lower electrode；The top electrode and the lower electrode are boss structure, including platform part and protrusion
Connecting line bolt is arranged close to the core, the protrusion end face center in portion, the platform part；The composite sheath is silicon rubber
Full skirt.
2. arrester as described in claim 1, it is characterised in that: the insulated support is hollow insulation tube, the platform
Card slot is arranged for the hollow insulation tube insertion in portion.
3. arrester as claimed in claim 2, it is characterised in that: the top electrode and the lower electrode using compression joint technique with
The hollow insulation tube connection.
4. arrester as claimed in claim 2, it is characterised in that: the hollow insulation tube is hollow pulling and extruding glass steel tube.
5. arrester as described in claim 1, it is characterised in that: the insulated support is insulation mandrel, several electricity
Resistance piece is hollow resistor disc, and the center-hole diameter of the hollow resistor disc is equal with the diameter of the insulation mandrel, the insulation
Plug passes through the hollow resistor disc.
6. arrester as claimed in claim 5, it is characterised in that: extend all hollow electricity in the insulation mandrel both ends
The part of resistance piece is provided with external screw thread, and the platform part is provided centrally with matched internal screw thread and the insulation mandrel screw thread connects
It connects.
7. arrester as claimed in claim 5, it is characterised in that: the outer diameter phase of the outer diameter of the platform part and the core
It is less than the outer diameter of the platform part Deng the outer diameter of, the protrusion.
8. arrester as claimed in claim 5, it is characterised in that: the insulation mandrel is glass reinforced plastic pultrusion plug.
9. arrester as described in claim 1, it is characterised in that: the composite sheath uses general injection high-temperature vulcanized silicon rubber
Gum forming technique, the composite sheath coat under the core outer surface, the platform part and the protrusion end surface
Subregion.
10. arrester as described in claim 1, it is characterised in that: the resistor disc is non linear metal oxide resistor piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920252382.5U CN209544048U (en) | 2019-02-27 | 2019-02-27 | A kind of arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920252382.5U CN209544048U (en) | 2019-02-27 | 2019-02-27 | A kind of arrester |
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| Publication Number | Publication Date |
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| CN209544048U true CN209544048U (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920252382.5U Active CN209544048U (en) | 2019-02-27 | 2019-02-27 | A kind of arrester |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743258A (en) * | 2020-12-18 | 2021-05-04 | 南阳金牛电气有限公司 | End face welding agent for zinc oxide resistance card |
| CN113744943A (en) * | 2021-09-02 | 2021-12-03 | 厦门Abb避雷器有限公司 | Core body structure of composite outer sleeve lightning arrester and composite outer sleeve lightning arrester |
-
2019
- 2019-02-27 CN CN201920252382.5U patent/CN209544048U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743258A (en) * | 2020-12-18 | 2021-05-04 | 南阳金牛电气有限公司 | End face welding agent for zinc oxide resistance card |
| CN113744943A (en) * | 2021-09-02 | 2021-12-03 | 厦门Abb避雷器有限公司 | Core body structure of composite outer sleeve lightning arrester and composite outer sleeve lightning arrester |
| CN113744943B (en) * | 2021-09-02 | 2023-01-24 | 厦门Abb避雷器有限公司 | Core body structure of composite outer sleeve lightning arrester and composite outer sleeve lightning arrester |
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