CN2246325Y - Suspension insulator - Google Patents
Suspension insulator Download PDFInfo
- Publication number
- CN2246325Y CN2246325Y CN 95223392 CN95223392U CN2246325Y CN 2246325 Y CN2246325 Y CN 2246325Y CN 95223392 CN95223392 CN 95223392 CN 95223392 U CN95223392 U CN 95223392U CN 2246325 Y CN2246325 Y CN 2246325Y
- Authority
- CN
- China
- Prior art keywords
- insulating part
- head
- porcelain
- arc
- perisporium
- 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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Abstract
The utility model relates to a suspension insulator which is provided with a porcelain-made insulating body, a cover-shaped part and a pin-shaped part, wherein the cover-shaped part is combined with the porcelain-made insulating body by cementation, and the porcelain-made insulating body comprises a hollow cylindrical head with the roof wall and the peripheral wall. The surface of the plastid is applied with varnish, and the inner peripheral surface and the outer peripheral surface of the peripheral wall are pasted with porcelain-made grains of sand. The pin-shaped part is positioned in the head of the insulation piece and comprises an end part with a circular arc surface with a large diameter, and the circular arc surface is configurated into that the compressive force in the radius direction can be applied to the head of the insulation piece under the action of loading of the axial tension. The utility model is characterized in that the outside diameter D of the end part with the large diameter of the pin-shaped piece and the curvature radius R of the circular arc surface satisfies the relation of (R/D=1.1 to 1.3).
Description
The utility model relates to a kind of suspension insulator, this suspension insulator has the porcelain insulating part and by lid shape part and the bolt-shape part of adhesive joint in above-mentioned porcelain insulating part, said porcelain insulating part comprises having roof, the hollow cylindrical head of perisporium, its matrix surface imposes glaze, the inner peripheral surface of perisporium and the outer peripheral face adhesion pottery grains of sand, bolt-shape part is positioned at the insulating part head, and comprise large-diameter end with arc surface, this arc surface is configured to: under the effect of axial tension load, the compression stress of radial direction can be applied to the insulating part head.
Suspension insulator with said structure discloses for for example spy opens clear 63-271831 communique.In such suspension insulator, the bolt-shape part (or being called R type pin) that has arc surface in large-diameter end, make the stress diffusion of generation by so-called " wedge effect ", the function that the stress on the porcelain main body is concentrated is alleviated in performance, so to the reliability that improves endurance is effectively, this structure is claimed the suspension insulator of quasi-insulator and even 30 tonnes to adopt.But, the suspension insulator with R type pin find its umbrella shape portion sometimes behind defectiveness hot strength or say the retained strength deficiency, this just causes when stress puts on the damaged face of umbrella portion, the expansion to head of can quickening to chap.Therefore, have to increase the size of the head of insulating part for improving retained strength.
For the heavyweight formula insulator more than 40 tonnes, its insulating part head more needs to maximize, and is difficult to effectively utilize the height of head in the R type latch structure in the past.Correspondingly proposed a kind of method for designing therewith, but multistage R type pin is substantially still followed the method for designing of single hop R type pin with multistage R type pin of a plurality of arc surfaces.
Generally, for " the wedge effect " that improve R type pin viewpoint from the reliability that improves the insulator endurance, wish to increase arc surface radius of curvature, head in a big way in disperse load, make that stress is concentrated to be eased.On the retained strength of suspension insulator, it is effective making the radius of curvature minimizing of arc surface but therewith correspondingly.Promptly, reduce by the radius of curvature that makes arc surface, the segmentation limit of load is controlled in the lid, make it not expand to impaired part (defective part), then can reduce load on the damaged face that puts on umbrella shape portion, so just can delay to be created on the expansion of the be full of cracks on the damaged face.Therefore, can effectively utilize the height between lid/pin, improve the retained strength of insulator, still,, will inevitably cause " the wedge effect " of bolt-shape part, be difficult to realize the desired tension breakdown strength of porcelain along with the radius minimizing of arc surface.
So a kind of so total formula insulator is developed in expectation; Do not increase the insulating part head dimensions, can make porcelain insulator present desired breakdown strength and retained strength again.
Problem of the present utility model provides the suspension insulator that fully satisfies above-mentioned requirements.
For addressing the above problem, this suspension insulator of the present utility model has the porcelain insulating part and by lid shape part and the bolt-shape part of adhesive joint in above-mentioned porcelain insulating part, said porcelain insulating part comprises having roof, the hollow cylindrical head of perisporium, its plastid surface imposes glaze, the inner peripheral surface of perisporium and the outer peripheral face adhesion pottery grains of sand, bolt-shape part is positioned at the insulating part head, and comprise large-diameter end with arc surface, this arc surface is configured to: under the effect of axial tension load, the compression stress of radial direction can be applied to the insulating part head, it is characterized in that: between the outer diameter D of pin shape plate large-diameter end and the arc surface radius of curvature R, satisfy following relation: R/D=1.1-1.3.
The utility model is not in order to be increased the insulator head dimensions, the suspension insulator that simultaneously makes it to have desired porcelain breakdown strength and retained strength again, through research repeatedly, the result finds first: the size between the outer diameter D of pin shape plate large-diameter end and the radius of curvature R of arc surface is than R/P particular importance, this size is set in the 1.1-1.3 scope than R/D, be more preferably and be approximately 1.2, finished the utility model that can satisfy above-mentioned purpose according to so new insight.
In the utility model most preferred embodiment, the perisporium inner surface of insulating part head is that barrel surface, roof inner surface are curved surfaces, and each inner surface of perisporium and roof connects continuously with the arcwall face that is roughly 1/4 circle.At this moment, the arc surface of insulating part head inner surface is littler than the radius of curvature of the curved surface of roof inner surface.The radius of curvature of this arc surface for example is 8-10mm.
Most preferred embodiment of the present utility model is described below with reference to the accompanying drawings.Wherein,
Fig. 1 is the front elevation of the suspension insulator of the utility model embodiment.
Fig. 2 illustrates the sketch of the utility model insulating part head inner surface configuration.
Fig. 3 is the utility model suspension insulator major part enlarged drawing.
Fig. 4, Fig. 5 are in the different suspension insulator of proof strength, porcelain breakdown strength and retained strength curve when R/D is changed.
Symbol wherein: 1-porcelain system insulating part, 3-hollow cylindrical head, 3a-leg, 4-pottery sand grains, 5-lid shape part, 6-bolt-shape part, 6a-large-diameter portion, 6b-arc surface, 7-binding agent.
Suspension insulator shown in Figure 1 has porcelain system insulating part, the known form of the matrix surface of this insulating part 1 is coated glaze, insulating part 1 is by to the extended flange shape umbrella of radius lateral direction portion 2, and configuration in the central and the head 3 cylindraceous that is roughly that projects upwards constitute.Head 3 comprises down the roof 3b that meets the columnar perisporium 3a of being roughly of umbrella portion 2, is connected on the upper end of perisporium 3a.As shown in Figure 2, the inner surface of the perisporium 3a of insulating part head is that barrel surface, roof 3b inner surface are curved surfaces, and each inner surface of perisporium 3a and roof 3b connects continuously with the arcwall face 3c that is roughly 1/4 circle.The arc surface of insulating part head inner surface is littler than the radius of curvature of the curved surface of roof inner surface.The radius of curvature of this arc surface for example is 8-10mm.Adhesion has the porcelain grains of sand 4 on the inside and outside side face of perisporium 3a.In this case, the engaging zones of sand grains 4 upper end is configured on the inner surface of perisporium 3a: with the cylindric inner surface of perisporium 3a and the link position T of arc surface 3c is benchmark, best in the downward regional Δ T in the position of square 3mm from it.
The basic comprising of such suspension insulator is the disclosed known technology of clear 63-19341 for the spy opens.
The sand grains of adhering on the inner peripheral surface of the head perisporium 3a of insulating part 1 and the outer peripheral face is preferably made by following method.That is, at first be in harmonious proportion the sand grains matrix, by the filter press dehydration and form the sand cake that contains suitable moisture content with the technical method in past the samely.To be in harmonious proportion in this sand cake input tug mill,, obtain noodles shape formed body from having the orifice plate extrusion that the aperture is a plurality of through holes of 1.8-2.0mm size.The diameter of this formed body or identical or slightly larger with the maximum particle diameter of target sand grains.Then, dry forming is a noodles shape formed body, by Roughpulverizer, division pelletizing machine formed body pulverizing, whole grain is become and the roughly the same coccoid of formed body diameter.The division pelletizing machine is to make that the cylinder that is provided with a plurality of through holes turn round, pulverizes, whole device.The aperture of through hole is 1.6-1.8mm on the cylinder, and the revolution of cylinder revolution when common is 200rpm.The coccoid that obtains is the coccoid of few corner angle, and it is 1.68mm that coccoid is placed on mesh, and following mesh is that the whole grain sieve of 0.84-1.0mm is gone up screening, adorns the alms bowl sintering then.Next, sinter is placed the screening sieve go up screening, the insulator sand grains that selected corner angle are less.Insulating part describes in detail in above-mentioned special fair 6-53601 communique with the above-mentioned breaking method of sand grains, please refer to above-mentioned communique.
The utility model is conceived to not only not need to increase the insulating part head dimensions, can obtain desired porcelain breakdown strength of suspension type insulating part and retained strength, and, the size of the outer diameter D of pin shape plate large-diameter end 6a and the radius of curvature R of arc surface 6b plays particular importance than R/D, thereby, setting size is proper range than R/D, achieves the above object.
Fig. 4 is when size is changed than R/D, porcelain hot strength and retained strength 3 δ curves, and wherein suspension insulator is made according to IEC specification standards NO.305-U120BS.In this curve, female ensemble average value that the tensile failure intensity of porcelain has with respect to the nargin of proof strength is 100, and retained strength is 100 for the female ensemble average value with 1.645 δ nargin of 65% proof strength.As shown in Figure 4, more discontented 1.1 the time when size than R/D, can reach the requirement of retained strength, but opposite, the tensile failure intensity of porcelain is then insufficient.On the other hand, when size surpassed 1.3 than R/D, though can reach the requirement of tensile failure intensity, opposite, retained strength was just insufficient.So the size range of R/D is set in the scope of 1.1-1.3, it would be desirable to be approximately 1.2.
Fig. 5 is when size is changed than R/D, the curve of porcelain hot strength and retained strength, and wherein suspension insulator is made according to IEC specification standards No.305-U300BS.In this curve, female ensemble average value that the tensile failure intensity of porcelain has with respect to proof strength 3 δ nargin is 100, and retained strength is 100 for the female ensemble average value with 1.645 δ nargin of 65% proof strength.As shown in Figure 4, more discontented 1.1 the time when size than R/D, can reach the requirement of retained strength, but opposite, the tensile failure intensity of porcelain is then insufficient.On the other hand, when size surpassed 1.3 than R/D, though can reach the requirement of tensile failure intensity, opposite, retained strength was just insufficient.So the size range of R/D is set in the scope of 1.1-1.3, it would be desirable to be approximately 1.2.
As described above as can be known, be set in proper range according to the utility model by ratio with the radius of curvature R of the outer diameter D of pin shape plate 6 large-diameter portion 6a and conical surface 6b, then need not strengthen the size of insulating part head 3, just can obtain the requirement of desired tensile failure intensity of porcelain and retained strength.An embodiment of the present utility model only has been described above, and the utility model never is limited to present embodiment, as long as in above-mentioned scope of the present utility model, the utility model can have multiple variation.
Claims (4)
1. suspension insulator, this suspension insulator has the porcelain insulating part and by lid shape part and the bolt-shape part of adhesive joint in above-mentioned porcelain insulating part, said porcelain insulating part comprises having roof, the hollow cylindrical head of perisporium, its plastid surface imposes glaze, the inner peripheral surface of perisporium and the outer peripheral face adhesion pottery grains of sand, bolt-shape part is positioned at the insulating part head, and comprise large-diameter end with arc surface, this arc surface is configured to: under the effect of axial tension load, the compression stress of radial direction can be applied to the insulating part head, it is characterized in that: between the external diameter mouth and arc surface radius of curvature R of pin shape plate large-diameter end, satisfy following relation: R/D=1.1-1.3.
2. as the suspension insulator of claim 1 record, it is characterized in that: satisfy following relation between the outer diameter D of the above-mentioned large-diameter end of pin shape plate and the radius of curvature R of above-mentioned arc surface,
R/D＝1.2。
3. as claim 1 or 2 desired suspension insulators, it is characterized in that: above-mentioned insulating part head perisporium inner surface is a drum surface, the roof inner surface is a curved surface, each inner surface of perisporium and roof connects continuously by being roughly 1/4 circular-arc circular arc, and this arc-shaped surface has than the little radius of curvature of roof inner surface curved surface.
4. the suspension type insulating part of putting down in writing as claim 3, it is characterized in that: the arc surface radius of curvature of above-mentioned insulating part head inner surface is 8-10mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP217427/95 | 1995-08-25 | ||
| JP21742795A JPH0963381A (en) | 1995-08-25 | 1995-08-25 | Suspended insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2246325Y true CN2246325Y (en) | 1997-01-29 |
Family
ID=16704050
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95118202A Expired - Lifetime CN1084030C (en) | 1995-08-25 | 1995-09-28 | Suspension insulator |
| CN 95223392 Expired - Lifetime CN2246325Y (en) | 1995-08-25 | 1995-09-28 | Suspension insulator |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95118202A Expired - Lifetime CN1084030C (en) | 1995-08-25 | 1995-09-28 | Suspension insulator |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0963381A (en) |
| CN (2) | CN1084030C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954366A (en) * | 2019-12-25 | 2020-04-03 | 日照三奇医疗卫生用品有限公司 | Sampling device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1848009B1 (en) * | 2006-04-20 | 2014-03-26 | ABB Technology Ltd | An elongated member and use thereof |
| JP5738723B2 (en) * | 2011-09-05 | 2015-06-24 | 公益財団法人鉄道総合技術研究所 | Insulator |
| JP6813524B2 (en) * | 2018-03-15 | 2021-01-13 | 日本碍子株式会社 | Suspended insulator |
| CN115143890B (en) * | 2022-07-06 | 2022-12-23 | 中国电力科学研究院有限公司 | Insulator structure parameter measuring system and method based on three-dimensional scanning |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62274510A (en) * | 1986-05-22 | 1987-11-28 | 日本碍子株式会社 | Suspension insulator |
| JPH0799653B2 (en) * | 1987-02-04 | 1995-10-25 | 日本碍子株式会社 | Suspension insulator |
| JP2568547B2 (en) * | 1987-04-28 | 1997-01-08 | 日本碍子株式会社 | Suspension insulator |
| CN1044005A (en) * | 1989-01-08 | 1990-07-18 | 全苏绝缘体和附属装置特种工艺设计局 | High voltage suspended insulator |
-
1995
- 1995-08-25 JP JP21742795A patent/JPH0963381A/en not_active Withdrawn
- 1995-09-28 CN CN95118202A patent/CN1084030C/en not_active Expired - Lifetime
- 1995-09-28 CN CN 95223392 patent/CN2246325Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954366A (en) * | 2019-12-25 | 2020-04-03 | 日照三奇医疗卫生用品有限公司 | Sampling device |
| CN110954366B (en) * | 2019-12-25 | 2023-09-01 | 日照三奇医疗卫生用品有限公司 | Sampling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1084030C (en) | 2002-05-01 |
| JPH0963381A (en) | 1997-03-07 |
| CN1133478A (en) | 1996-10-16 |
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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 | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |