CN201788774U - Hollow composite insulator - Google Patents
Hollow composite insulator Download PDFInfo
- Publication number
- CN201788774U CN201788774U CN2010202426218U CN201020242621U CN201788774U CN 201788774 U CN201788774 U CN 201788774U CN 2010202426218 U CN2010202426218 U CN 2010202426218U CN 201020242621 U CN201020242621 U CN 201020242621U CN 201788774 U CN201788774 U CN 201788774U
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- CN
- China
- Prior art keywords
- insulated tube
- flange
- groove
- combined insulator
- hollow combined
- 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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- 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
- H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies
- H01B17/325—Single insulators consisting of two or more dissimilar insulating bodies comprising a fibre-reinforced insulating core member
Abstract
The utility model relates to a hollow composite insulator, which comprises an insulating tube, a jacket coated outside the insulating tube, at least one shed arranged outside the jacket and at least one flange arranged at the tail end of the insulating tube. A contact surface of the insulating tube and the flange is provided with at least one insulating tube groove. The contact surface of the insulating tube and the flange is provided with the insulating tube groove, and thus, when the hollow composite insulator is acted by internal stress, the stress generated by the hollow composite insulator is more uniformly distributed so as to reduce the concentrated stress of a certain position and further make the hollow composite insulator meet the power transmission and transformation requirement on higher voltage class.
Description
Technical field
The present invention relates to a kind of electrical circuitry equipment equipment, particularly relate to a kind of hollow combined insulator that is used in the power industry High-Voltage Electrical Appliances.
Background technology
Along with the needs of the development of power industry, particularly extra-high voltage electric transmission and transformation, more and more for the demand of insulator.The hollow insulator of common outdoor use is generally porcelain insulator, because porcelain insulator resistant sudden strain of a muscle ability is low, quality is poor, and is easily broken in transportation and the installation process, and needs periodic cleaning in use, to installing and using and all brought a lot of inconvenience.For addressing this problem, the electrical circuitry equipment industry has been developed traditional hollow combined insulator.Traditional Hollow Compound comprises an insulated tube, a sheath that is coated on this insulated tube outside, and at least one is arranged on the full skirt in the described sheath outside, and at least one is arranged on the flange of described insulated tube two ends.The insulated tube of described hollow combined insulator is by being composited as the glass fiber yarn of reinforcing material and epoxy resin as basis material.What certainly expect is that described basis material can also be a vinyl ester resins, or polyurethane resin.Hollow combined insulator is the vitals of high-voltage transforming station equipment, and its electric property and mechanical performance are all had very high requirement, and the quality of hollow combined insulator quality directly has influence on the reliability of high-voltage transforming station equipment and the safe operation of electrical network.Therefore, for all strict control of every performance of hollow combined insulator.
For mechanical performance, not only require insulated tube can bear various bursting stresses, must guarantee that insulated tube and flange connections can sustain various interior external carbuncles.For example from the medium of hollow combined insulator inside, as SF
6The internal pressure that produces during expansion, thus this internal pressure transforms being engaged in and flange can being broken away from from insulated tube to extrapolation of companion flange.Also has hollow combined insulator when it is subjected to along its radial level thrust, as in strong wind, waving of hollow combined insulator will produce such horizontal thrust, and this frequent radial level thrust can reduce the engaging force of insulated tube and flange connections, closely destroy this hollow combined insulator.Existing hollow combined insulator is only adorned agent and will be offered reeded flange and water and install on the insulated tube with watering, internal pressure when this fixed form is difficult to bear voltage levels and radial level thrust, thus can cause the grid power transmission accident.
Summary of the invention
In view of this, be necessary to provide a kind of hollow combined insulator that the high-tension electricity grade is used that meets.
A kind of hollow combined insulator comprises an insulated tube, a sheath that is coated on this insulated tube outside, and at least one is arranged on the full skirt in this sheath outside, and at least one is arranged on the flange of described insulated tube end.The contact-making surface of described insulated tube and flange is provided with at least one insulated tube groove
Compared with prior art, because the contact-making surface of insulated tube and flange is provided with the insulated tube groove, make when hollow combined insulator is subjected to internal stress, the stress distribution that it produced is more even, thereby reduce the concentrated stress at a certain position, and then make this hollow combined insulator meet the higher power transmission and transformation requirement of electric pressure.
Description of drawings
Fig. 1 is the structural representation of a kind of hollow combined insulator provided by the invention.
Fig. 2 is the partial enlarged drawing of the hollow combined insulator of Fig. 1 at the A place.
Embodiment
For the present invention being done further explanation, lift a preferred embodiment and conjunction with figs. and be described in detail as follows:
See also Fig. 1 and Fig. 2, it is the structural representation of a kind of hollow combined insulator 100 provided by the present invention.Described hollow combined insulator 100 comprises an insulated tube 10, a sheath 11 that is coated on these insulated tube 10 outsides, at least one is arranged on the full skirt 12 in described sheath 11 outsides, at least one is arranged on the flange 13 of described insulated tube 10 ends, and be used to water the fixing described insulated tube 10 of dress and flange 13 water dress agent 14.
Described insulated tube 10 is composited by glass fiber yarn and the basis material as reinforcing material.Described basis material can be epoxy resin, vinyl ester resin, or polyurethane resin.In the present embodiment, described basis material is an epoxy resin.In the forming process of this insulated tube 10, epoxy resin adhesive liquid meeting and glass fiber yarn form epoxy resin cured product through a series of physicochemical change.Simultaneously, this epoxy resin cured product forms the boundary layer of structure and superior performance between epoxy resin adhesive liquid and glass fiber yarn, this boundary layer is combined into an integral body to glass fiber yarn and epoxide-resin glue, makes the insulated tube of being made by this epoxy resin and glass fiber yarn 10 have favorable mechanical performance and electric property.Described glass fiber yarn can be the uninterrupted organdy of alkali-free, and this glass fiber yarn accounts for 70%～80% of insulated tube 10 total weights, and in the present embodiment, glass fiber yarn accounts for 78% of insulated tube 10 total weights.The two ends of described insulated tube 10 offer at least one insulated tube groove 101 at an end that is provided with flange 13 at least.In the present embodiment, because described insulated tube 10 two ends all are provided with flange 13, so the two ends of described insulated tube 10 all are provided with insulated tube groove 101, and every end all is provided with three grooves 101.Described insulated tube groove 101 is a rectangular recess, and promptly this insulated tube groove 101 is a rectangle along the cross sectional shape of its axis.Described three insulated tube grooves 101 are evenly distributed on the composition surface that engages with flange 13.Because described insulated tube 10 not only needs to bear internal pressure, horizontal thrust also needs to bear shearing force, and therefore, described insulated tube groove 101 is along the radial depth of insulated tube 10 wall thickness design according to this insulated tube 10.For the insulated tube 10 by glass fiber yarn and epoxy resin preparation in an embodiment, its wall thickness is 12 millimeters, and then this insulated tube groove 101 is less than or equal to 2 millimeters along its radial depth.In the present embodiment, the radial depth of described insulated tube groove 101 is 1 millimeter.Described insulated tube groove 101 can be a connectivity slot, and promptly this insulated tube groove 101 is offered along the whole outer peripheral edges of this insulated tube 10, thereby forms an annular groove.This insulated tube groove 101 also can comprise the multistage groove of mutual isolation, offers along the outer peripheral edges of insulated tube 10.When groove that this insulated tube groove 101 separates for multistage, can when will guaranteeing the engaging force of reinforced insulation pipe 10 and flange 13, can also keep the intensity of insulated tube 10 ends.
Described sheath 11 and full skirt 12 all are coated on the described insulated tube 10 by the high-temperature silicon disulfide rubber integral injection molding, and wherein sheath 11 is arranged between insulated tube 10 and the full skirt 12.What certainly expect is that described sheath 11 also can be made respectively with full skirt 12, and then combines.Described sheath 11 is coated on the whole insulated tube 10, and has part sheath 11 can be coated on the flange 13, also can be embedded between described flange 13 and insulated tube 10.In this enforcement body, the end of described sheath 11 is embedded between described flange 13 and insulated tube 10.High-temperature silicon disulfide rubber is that the polysiloxane (being rubber) of HMW (molecular weight is generally 40～800,000) adds reinforced filling and other various additives, the employing organic peroxide is a vulcanizing agent, and a kind of rubber of becoming of interlinkage at high temperature, this rubber abbreviates silicon rubber as.The reinforced filling of high-temperature silicon disulfide rubber can be white carbon, and it can make the intensity of vulcanizate increase by ten times.Add various additives and mainly be the cost that reduces glue, improve properties of rubber and give the various properties of vulcanizate such as fire-retardant, conduction etc.In the present embodiment, described high-temperature silicon disulfide rubber includes with the lower part to be formed: methyl vinyl silicone rubber, white carbon, aluminium hydroxide, silicone oil and vulcanizing agent etc., and the shared weight ratio of described each component is: methyl vinyl silicone rubber 20%～50%, white carbon 10～50%, aluminium hydroxide 25～50%, silicone oil 2～5%, vulcanizing agent 1%.
Described full skirt 12 comprises at least one first full skirt 121, second full skirt 122 that at least one and first full skirt 121 are provided with at interval.In the present embodiment, described second full skirt 122 comprises two.What can expect is that as required, this first full skirt 121 or second full skirt 122 can be for a plurality of.Described one first full skirt 121 and two second full skirts 122 are provided with at interval.Described first full skirt 121, second full skirt 122 have different skirts long, and for example the skirt of first full skirt 121 is grown up long in the skirt of second full skirt 122.Certainly be also contemplated that described full skirt 12 is not limited to include only described first, second full skirt 121,122, can also comprise more a plurality of skirts little different full skirt of growing up.And the arrangement mode of this first, second full skirt 121,122 also is not limited to above-mentioned arrangement mode, and other arrangement mode arbitrarily can be arranged.Preferably, the long L of the skirt of described second full skirt 122
2With the long L of the skirt of first full skirt 121
1Ratio be 60%L
1≤ L
2≤ 90%L
1.The inclined angle alpha of the upper surface of described first full skirt 121 is 5 °≤α≤25 °, and the angle of inclination beta of lower surface is 2 °≤β≤6 °, and in the present embodiment, the inclined angle alpha of the upper surface of first full skirt 121 is 8 °, and the lower surface angle of inclination beta is 5 °.The inclination angle of the upper and lower surface of described second full skirt 122 can be identical with the inclination angle of first full skirt 121.The inclination angle of the upper and lower surface of described first, second full skirt 121,122 is controlled at certain limit, help improving the self-cleaning of each full skirt, and the long proportional control of the skirt of first, second full skirt 121,122 helps avoiding the bridge network between the adjacent full skirt under the condition of drenching with rain in certain scope.Be understandable that described hollow combined insulator 100 can comprise a plurality of full skirts 12, also can only have one.When described hollow combined insulator 100 comprised a plurality of full skirt 12, these a plurality of full skirts 12 can be one-body molded, also can distinguish moulding, is bonded in the outside of sheath 11 then by viscose glue.
Described 13 by a pedestal 131, one be arranged at pedestal 131 an end and with the pedestal 131 vertical cannula portion that link to each other 132, at least one is connected with the reinforcement 133 between pedestal 131 and cannula portion, and is arranged at least one the flange groove 134 on described cannula portion 132 inwalls.
Described pedestal 131 can be one-body molded with cannula portion 132, and also can be fixed by methods such as welding links together.Described pedestal 131 comprises a plurality of fixing holes 135 that are arranged on this pedestal 131, and this fixing hole 135 is used for this hollow combined insulator 100 by bolt (figure do not show) and other device, and as lightning arrester, switch etc. link together.Described cannula portion 132 is used for sheathed fixed insulation pipe 10.
The insulated tube groove 101 corresponding settings of described flange groove 134 and described insulated tube 10, promptly described flange groove 134 is on the same sagittal plane with described insulated tube groove 101.Described flange groove 134 is identical with the structure of insulated tube groove 101, promptly both can be connectivity slot, also can be the multistage groove that separates separately.Simultaneously, water the filling of adorning agent 14 in order to improve, described flange groove 134 all right circular arcs, promptly the cross sectional shape along flange 13 axis is an arch.
Describedly water dress agent 14 and can be epoxy resin, it is filled between flange 13 and the insulated tube 10, and among insulated tube groove 101 and the flange groove 134, thereby the engaging force between increase insulated tube 10 and the flange 13.
After being these hollow combined insulator 100 loading standard internal pressures, in the suffered stress of this hollow combined insulator 100, its maximum is 45MPa.Need to prove also that here described standard internal pressure is meant because insulating gas need be filled in the inside of described hollow combined insulator 100, as SF
6, this insulating gas is in when work, the internal stress that expands and produced.
When being this hollow combined insulator 100 when loading horizontal bursting stress 295MPa, in the suffered stress of this hollow combined insulator 100, its maximum is 47MPa.
Compared with prior art, because the contact-making surface at insulation tube and flange is provided with the insulation tube groove, so that hollow combined insulator is when being subjected to internal stress, its stress distribution that produces is more even, thereby reduce the concentrated stress at a certain position, and then so that this hollow combined insulator meets the higher power transmission and transformation requirement of electric pressure.
In addition, those skilled in the art can also do other variation in the spirit of the present invention, as long as it does not depart from technique effect of the present invention, all should be included in the present invention's scope required for protection.
Claims (9)
1. hollow combined insulator, comprise an insulated tube, a sheath that is coated on this insulated tube outside, at least one is arranged on the full skirt in this sheath outside, and at least one is arranged on the flange of described insulated tube end, and it is characterized in that: the contact-making surface of described insulated tube and flange is provided with at least one insulated tube groove.
2. hollow combined insulator as claimed in claim 1 is characterized in that: also be provided with at least one flange groove on the contact-making surface of described flange and insulated tube, described insulated tube groove and flange groove are oppositely arranged, and are on the same sagittal plane.
3. hollow combined insulator as claimed in claim 2 is characterized in that: described flange groove is a rectangular recess, and is a connectivity slot.
4. hollow combined insulator as claimed in claim 2 is characterized in that: described flange groove comprises the multistage rectangular recess of mutual isolation.
5. hollow combined insulator as claimed in claim 2 is characterized in that: described flange groove is an arch along the cross sectional shape of flange axis.
6. hollow combined insulator as claimed in claim 1 is characterized in that: described insulated tube groove is a rectangular recess, and this groove is a connectivity slot.
7. hollow combined insulator as claimed in claim 1 is characterized in that: described insulated tube groove is a rectangular recess, and this rectangular recess comprises the multistage of mutual isolation.
8. hollow combined insulator as claimed in claim 1 is characterized in that: be provided with a gap between described insulated tube and the flange, the width in this gap is less than 0.5 millimeter.
9. hollow combined insulator as claimed in claim 1 is characterized in that: the radial depth of described insulated tube groove is less than 2 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202426218U CN201788774U (en) | 2010-06-18 | 2010-06-18 | Hollow composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202426218U CN201788774U (en) | 2010-06-18 | 2010-06-18 | Hollow composite insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201788774U true CN201788774U (en) | 2011-04-06 |
Family
ID=43820731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202426218U Expired - Lifetime CN201788774U (en) | 2010-06-18 | 2010-06-18 | Hollow composite insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201788774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290166A (en) * | 2010-06-18 | 2011-12-21 | 江苏神马电力股份有限公司 | Hollow composite insulator |
-
2010
- 2010-06-18 CN CN2010202426218U patent/CN201788774U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290166A (en) * | 2010-06-18 | 2011-12-21 | 江苏神马电力股份有限公司 | Hollow composite insulator |
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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: JIANGSU SHENMA ELECTRIC POWER CO., LTD. Free format text: FORMER OWNER: NANTONG SHENMA POWER ELECTRIC + TECHNOLOGY CO., LTD. Effective date: 20110922 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110922 Address after: The 226553 Jiangsu Rugao towns such as 4, 8, Yang Group Patentee after: Jiangsu Shenma Electric Power Co., Ltd. Address before: 226553 Jiangsu city of Rugao Province towns such as 4, 8, Yang Group Patentee before: Nantong Shenma Electric Power Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
|
| CX01 | Expiry of patent term |