CN102194556A - Center fastening type insulation sleeve - Google Patents
Center fastening type insulation sleeve Download PDFInfo
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- CN102194556A CN102194556A CN2011100685274A CN201110068527A CN102194556A CN 102194556 A CN102194556 A CN 102194556A CN 2011100685274 A CN2011100685274 A CN 2011100685274A CN 201110068527 A CN201110068527 A CN 201110068527A CN 102194556 A CN102194556 A CN 102194556A
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- Insulators (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
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Abstract
The present invention provides a center fastening type insulation sleeve which has the following advantages: high performance for bearing transverse vibration and repeated bending, and no deterioration of sealing performance after long time. In the insulation sleeve which has a central fastening structure that is obtained through compressing and fastening a flange metal accessory (3), an upper sleeve (1) and a lower sleeve (2) while a sealing gasket (12) is separated, flexible adhesive (18) is used for jointing a side supporting metal (17) which extends upwards from the flange metal accessory (3) and is vertically provided with a lower end of a side surface of the upper sleeve (1). An upper end face of the flange metal accessory (3) is provided with a sealing gasket groove (11). Through the sealing gasket (12) which has a larger volume than that of the sealing gasket groove (11) and a compression deformation spring constant that is larger than a shearing spring constant of the flexible adhesive (18), a lower end face of the upper sleeve which is jointed with the side supporting metal accessory (17) is supported through a state that upwards floating is started from the upper end face of the flange metal accessory (3).
Description
Technical field
The present invention relates to a kind of use the center of flexible adhesives fastening (セ Application タ one Network ラ Application プ, centerclamp) type insulating sleeve.
Background technology
The insulating sleeve of supporting high-tension bus-bar etc. of being used to insulate is provided with the insulator of porcelain between ground connection side metalwork and high-pressure side metalwork, its structure is when heart portion connects center conductor therein, to enclose insulating gas or insulating oil to guarantee insulating properties in inside.
Figure 1 illustrates the schematic cross-section (patent documentation 1) that the applicant is disclosed, insulating oil enclosed inner insulating sleeve with the fastening structure in center of guaranteeing insulating properties.In Fig. 1,1 is the upside sleeve pipe, and 2 is the downside sleeve pipe, and 3 for being positioned at the flange metal-ware of their central authorities, and 4 is center conductor, and 5 is the oil-paper condenser core of the periphery of center conductor 4.Be filled with insulating oil 6 in the inside of insulating sleeve body.The 7th, the expanding chamber of insulating sleeve head, portion is provided with the fastening spring 8 of using in center within it, this center is fastening to apply tension force on center conductor 4 with spring 8, makes that the external component group is that upside sleeve pipe 1, downside sleeve pipe 2, flange metal-ware 3 etc. are combined closely, thus the fastening structure in formation center.Externally each composition surface of parts group is provided with gasket slot 11, embed therein and have the sealing gasket 12 bigger than the internal capacity of gasket slot, external component is not directly combined closely mutually, but presents compressive state by sealing gasket, keeps with frictional force.Between sealing gasket and external component,,, also can press and maintain sealing by this face even because of the long-time deterioration of sealing gasket loses reaction force (reactiveforce) owing to usually keep the state that the face that is applied with is pressed because of the center fastening force.The upper end of center conductor 4 is connecting top terminal 9, and the lower end is connecting terminal 10 in the oil, switches on.
In addition, as the means that make that upper sleeve portion 1 and flange metal-ware 3 are combined closely, except the fastening structure in aforementioned center, also known have a following structure (below be referred to as glued joint (セ メ Application チ Application グ) structure): as shown in Figure 2, lateral surface bottom at upside sleeve pipe 1 engages splicing metal-ware 13 by cement 14, in upper surface gasket slot 11 is set with the flange metal-ware 3 of this splicing metal-ware 13 subtends configuration, receiving volume is littler than the volume of gasket slot therein, the sealing gasket 16 that the degree of depth of aspect ratio gasket slot is big, connect with bolt 15 and to glued joint metal-wares 13 and the flange metal-ware 3 relative, guarantee sealing between upside sleeve pipe 1 and the flange metal-ware 3 by the elasticity of sealing gasket 16 self with it.
In as shown in Figure 2 splicing structure, for sealing gasket 16 center fastening forces and inoperative, therefore, the sealing of this part is just guaranteed by the reaction force of sealing gasket 16 self.But for a long time variation can cause the deterioration of sealing with sealing gasket 16, produces compression set, in case so, will produce sealing gasket 16 self the reaction force reduction, can not guarantee the problem of the sealing of this part.
On the other hand, in the fastening structure in center as shown in Figure 1, just friction by only producing by center conductor 4 caused compression stresses, keep upside sleeve pipe 1, downside sleeve pipe 2, flange metal-ware 3 etc., so the transverse vibration that causes for earthquake, high wind, earth fault etc. is fragile, might cause as shown in Figure 3 opening or lateral attitude deviation as shown in Figure 4, thereby leak inner insulating oil 6.
Patent documentation 1: Japanese kokai publication hei 10-134658 communique
Summary of the invention
The objective of the invention is to address the above problem, provide a kind of performance of bearing transverse vibration and alternating bending strong, through sealing property for many years can deterioration yet insulating sleeve.
The present invention who makes in order to address the above problem is to use the center fastening type insulating sleeve (the 1st invention) of flexible adhesives, it is characterized in that, compressing the clamp flange metal-ware across sealing gasket by center conductor, in the insulating sleeve of upside sleeve pipe and downside sleeve pipe and the fastening structure in center that forms, begin to extend upward and erect the bottom that the side support metal-ware that is provided with is engaged in the side of upside sleeve pipe with the flexible adhesives handle from the flange metal-ware, upper surface in the flange metal-ware is provided with gasket slot, pass through sealing gasket, the lower surface of the upside sleeve pipe that the state support that begins upwards to float with the upper surface from the flange metal-ware engages with side support metal-ware, wherein, the volume ratio gasket slot of sealing pad is big, and the compression spring constant of sealing pad is bigger than the shear spring constant of flexible adhesives.
The 2nd invention is that wherein, the hardness of sealing gasket is 70～80 according to the 1st the described insulating sleeve of invention, and the hardness of flexible adhesives is 20～30.
The 3rd invention is that wherein, the flange metal-ware is provided with except that the water hole according to the 1st invention or the 2nd the described insulating sleeve of invention.
The 4th invention is according to any described insulating sleeve in the 1st～3 invention, and wherein, flange metal-ware and side support that metal-ware is integrated.
The 5th invention is according to any described insulating sleeve in the 1st～3 invention, and wherein, flange metal-ware and side support metal-ware to come combination by bolt.
In insulating sleeve of the present invention, has following structure: begin to extend upward and erect the bottom that the side support metal-ware that is provided with is engaged in the side of upside sleeve pipe from the flange metal-ware with the flexible adhesives handle, upper surface in the flange metal-ware is provided with gasket slot, the lower surface of the upside sleeve pipe that the state support that begins upwards to float with the upper surface from the flange metal-ware by sealing gasket engages with side support metal-ware, wherein, the volume ratio gasket slot of sealing pad is big and compression spring constant sealing gasket is bigger than the shear spring constant of flexible adhesives.Insulating sleeve of the present invention can followed the contraction of sealing gasket, on one side produce can't this bonding portion of failure by shear distortion, sink to sleeve pipe on one side.Therefore, insulating sleeve of the present invention with this spline structure, even because of change in long term causes the sealing gasket deterioration, produces compression set, under the situation that the reaction force of sealing gasket self dies down, also can the long term maintenance sleeve pipe and sealing gasket between sealing.
In addition, owing to adopt by flexible adhesives (it has elastic force at solid state) upside sleeve pipe and side supported the structure that metal-ware bonds together, even so under the situation of transverse vibration that earthquake, high wind, earth fault etc. cause to insulating sleeve generation effect, also the sleeve pipe that tilts firmly can be supported in the upper end-face edge that metal-ware is supported in the side by flexible adhesives, therefore support the fastening structure in simple center of metal-ware to compare with not using the side, realized bearing the strong insulating sleeve of crooking ability.
Description of drawings
Fig. 1 is the schematic diagram of the insulating sleeve of the fastening structure in former center.
Fig. 2 is the schematic diagram of former splicing structure.
Fig. 3 is the schematic diagram of the opening in the insulating sleeve of the fastening structure in former center.
Fig. 4 is the schematic diagram of the lateral attitude deviation in the insulating sleeve of the fastening structure in former center.
Fig. 5 is the schematic cross-section at the main position of the insulating sleeve in the expression preferred implementation of the present invention.
Fig. 6 is in Fig. 5, is following the schematic diagram that the contraction upper sleeve of sealing gasket sinks to downwards.
Fig. 7 is in Fig. 5, and under situation about bending on the insulating sleeve, last square casing is supported the schematic diagram that metal-ware is supported by the side.
Fig. 8 is the schematic cross-section at the main position in other the execution mode.
Fig. 9 is the curve chart of bending (Scratch body) characteristic of expression nonlinear characteristic material and linear characteristic material.
Figure 10 is the curve chart of definition of the spring constant of explanation nonlinear characteristic material.
Figure 11 is the schematic diagram of structure at main position of the insulating sleeve of embodiment.
Figure 12 is in an embodiment, the load-deformation curve of sealing gasket and flexible resin.
Symbol description
1 upside sleeve pipe, 2 downside sleeve pipes, 3 flange metal-wares, 4 center conductors, 5 oil-paper condenser core, 6 insulating oils, 7 expanding chambers, 8 springs, 9 top terminal, terminal in 10 oil, 11 gasket slot, the big sealing gasket of 12 volume ratio gasket slot, 13 glued joint metal-ware, 14 cement, 15 bolts, the little sealing gasket of 16 volume ratio gasket slot, metal-ware is supported in 17 sides, 18 flexible adhesives, and 19 remove the water hole.
Embodiment
Express preferred implementation of the present invention below.
Fig. 5 is the figure at the main position of the insulating sleeve in the expression preferred implementation of the present invention, the 3rd, flange metal-ware, the 1st, the sleeve pipe of gas side, the 12nd, between the sealing gasket between the two, the 17th, extend the side of erectting setting upward from 3 beginnings of flange metal-ware and support metal-ware.Metal-ware 17 is supported in flange metal-ware 3 and side, and can be shown in Fig. 5,6 be undertaken by means such as welding like that is integrated, also can combine by bolt as shown in Figure 8.
With in the past identical be, exist the center conductor that does not illustrate at the center of sleeve pipe, around it is condenser core, apply tensile stress by spring to center conductor in the head setting, fastening with sealing gasket 12 compressions together by center fastening force flange metal-ware 3 and sleeve pipe 1 as its reaction force, seal.
Be formed with the gasket slot 11 of ring-type on the complete cycle of the upper surface of flange metal-ware 3, sealing pad groove 11 is provided with its bulky abundant sealing gasket 12 of volume ratio.Sealing pad 12 be by hardness constitute by compound lamellar body 70～80, that for example synthetic rubber, fibrous raw material and rubber or synthetic resin form together etc.
The structure of Xing Chenging is thus: make sealing gasket 12 outstanding upward from gasket slot 11 beginning, make the lower surface of sleeve pipe 1 begin upwards to float from the upper surface of flange metal-ware 3, the center fastening force of making can directly be communicated to sealing gasket 12.By this structure, on sealing gasket 12, apply the center fastening force, and produce very strong face pressure between porcelain with normality, therefore can stably guarantee the reliability that seals.
On the bottom, side of the sleeve pipe 1 of gas side, support metal-wares 17 by flexible adhesives 18 bonding sides.For flexible adhesives 18,, for example can use RTV rubber etc. as long as present 20～30 hardness under the state after solidifying.Contain moisture in the flexible adhesives 18, this moisture can be discharged from the water hole 19 of removing that is provided with in flange metal-ware 3.
After the insulating sleeve assembling of the present invention, reach such effect: after these flexible adhesives 18 solidify, apply tensile stress on center conductor, by the center fastening force flange metal-ware 3 and sleeve pipe 1 are compressed fasteningly with sealing gasket 12, guarantee sealing.
In the present invention, the compression spring constant of sealing gasket 12 is bigger than the detrusion spring constant of flexible adhesives, realizes effect of the present invention by such design.In addition, sealing gasket 12 employed rubber, the employed resin of flexible adhesives etc. are the nonlinear characteristic materials.As shown in Figure 9, the flexural property of nonlinear characteristic material and linear characteristic material is inequality, and the spring constant of linear characteristic material is according to the simple function definition shown in following (1) formula, and is relative therewith, the spring constant of nonlinear characteristic material is not that (1) formula is defined.
Young's modulus * the compressing area of the spring constant=material of linear characteristic material/thickness (1)
Therefore, in insulating sleeve of the present invention, the spring constant of nonlinear characteristic material is carried out as giving a definition.Among Figure 10, represented the curve chart of definition of the spring constant of explanation nonlinear characteristic material.
The sealing gasket that constitutes by nonlinear material and the spring constant of flexible adhesives=(F2-F1)/Δ y (2)
In (2) formula, F1 represents is to use center fastening force in the maximum temperature, and F2 is for using the center fastening force in the minimum temperature, y
1Be the amount of bow among the F1, y
2Be the amount of bow among the F2, Δ y=y
2-y
1
For the insulating sleeve of the fastening structure in center, because shrinking greater than the thermal expansion of peripheral components, the thermal expansion of center conductor shrinks, the mitigation so the center fastening force can become when high temperature, it is stronger to become when low temperature.The so-called minimum temperature of using has-40 ℃ ,-30 ℃ ,-20 ℃ three kinds according to the standard code of JEC5202, IEC60137, GB4109 etc.As using maximum temperature, have equally+40 ℃ ,+30 ℃.
As an example, the serviceability temperature of insulating sleeve shown in Figure 11 for example from-40 ℃ change to+40 ℃, under so predetermined environment, study.The sealing gasket of this moment and the load-bearing-deformation curve of flexible resin are as shown in figure 12.
This insulating sleeve is that 21000kg assembles at 20 ℃ with the center fastening force, and (40 ℃) expand during high temperature, and the center fastening force is F
1=20206kg.On the other hand, (40 ℃) shrink when low temperature, and the center fastening force is F
2=24281kg, the difference during with high temperature is 4075kg.
At this moment, the spring constant of sealing gasket is obtained according to following mode.For external diameter is that 405mm, the wide 15mm of being, thickness are sealing gasket (area A=18000mm of 6mm
2), if obtain each self-corresponding amount of bow, x when obtaining high temperature
1X when=0.828mm, low temperature
2=0.792mm, amount of bow Δ x=0.036mm.Therefore, the compression spring constant k of sealing gasket
1=(F
2-F
1)/(x
2-x
1)=113000kg/mm.
On the other hand, the detrusion spring constant of flexible resin is obtained according to following mode.As flexible resin, select the chemical industry system RTV of SHIN-ETSU HANTOTAI rubber: KE-44 (hardness (durometerA): 25 degree), be that 25 degree are converted into initial stage elasticity of compression coefficient 4MPa for use to hardness.If Poisson's ratio n=0.5, rigidity coefficient of elasticity G=E/2 (1+v)=1.33MPa so.If the thickness t=10mm of flexible resin, width D=130mm, outer external diameter of pipe F=435mm, contact area S=178000mm so
2, the detrusion spring constant k of flexible resin
2=GS/t=2400kg/mm.
As can be seen, the detrusion spring constant of flexible resin is about the compression spring constant k of sealing gasket
11/50th.
When 20 ℃ of flexible resins solidify, do not applying shear stress, when still applying the center fastening force, be out of shape about 0.8mm, the loading of bearing 1930kg.In-40 ℃～+ 40 ℃ range of temperature, the loading that flexible resin is subjected to is in the range of 1901kg～1987kg.In addition, if under the situation of adhering with epoxy resin, so because the condition that reaches such of being difficult to really up to the mark.
Effect of the present invention
Compress in the assembling that is accompanied by insulating sleeve when fastening, the sleeve pipe 1 of sealing gasket 12 distortion, gas side sinks to, though applied the shearing force on the vertical direction for flexible adhesives 18, produce distortion, this distortion can't cause that hardness is the failure by shear of 20～30 flexible adhesives 18.
When insulating sleeve used, along with variations in temperature, the center fastening force can change, and meanwhile, as shown in Figure 6, sealing gasket 12 is flexible.Along with stretching of sealing gasket 12, even flexible adhesives 18 are applied shearing force in vertical direction repeatedly, owing to used in the present invention with the bonding agent before the cement etc. and compared comparatively soft flexible adhesives 18, destroyed so can not produce shear fatigue from this bonding portion.
Because the change in long term of insulating sleeve, sealing gasket 12 deteriorations and produce compression set, the reaction force reduction of sealing gasket 12 self, in the case, sealing gasket 12 shrinks.But, sleeve pipe 1 supports that with mode and the side of holding elastic force metal-ware 17 is bonding by flexible adhesives 18, so can make sleeve pipe 1 sink to along with the contraction of sealing gasket 12, can keep the sealing between sleeve pipe 1 and the flange metal-ware 3 for a long time.
In addition, insulating sleeve of the present invention, under the situation of the transverse vibration that earthquake, high wind, earth fault etc. cause, as shown in Figure 7, the side supports the upper end-face edge of metal-ware 17 to support the sleeve pipe 1 of inclination across flexible adhesives 18, so support the fastening structure in simple center of metal-ware 17 to compare with not using the side, the ability that structure of the present invention bears bending load is very strong.
Claims (5)
1. center fastening type insulating sleeve comprises upside sleeve pipe (1), downside sleeve pipe (2), connects the flange metal-ware (3) of described upside sleeve pipe (1) and downside sleeve pipe (2) respectively across sealing gasket (12), it is characterized in that,
The side of extending setting upward from the side of described flange metal-ware (3) is supported to be provided with flexible adhesives (18) between the downside end face of metal-ware (17) and described upside sleeve pipe (1), connect described side and support the downside end face of metal-ware (17) and described upside sleeve pipe (1)
Be provided with gasket slot (11) in the upper surface of described flange metal-ware (3), be embedded in the volume of the volume of the described sealing gasket (12) in the described gasket slot (11) greater than described gasket slot (11), thereby make between the lower surface of the upper surface of described flange metal-ware (3) and described upside sleeve pipe (1) and have the gap
The compression spring constant of described sealing gasket (12) is bigger than the shear spring constant of described flexible adhesives (18).
2. center according to claim 1 fastening type insulating sleeve is characterized in that the hardness of described sealing gasket (12) is 70～80, and the hardness of described flexible adhesives (18) is 20～30.
3. center according to claim 1 and 2 fastening type insulating sleeve is characterized in that described flange metal-ware (3) is provided with except that water hole (19).
4. according to any described center fastening type insulating sleeve in the claim 1～3, it is characterized in that described flange metal-ware (3) and described side support that metal-ware (17) is integrated.
5. according to any described center fastening type insulating sleeve in the claim 1～3, it is characterized in that described flange metal-ware (3) and described side support metal-ware (17) to come combination by bolt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-064682 | 2010-03-19 | ||
| JP2010064682A JP5005059B2 (en) | 2010-03-19 | 2010-03-19 | Center clamp type bushing using flexible adhesive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102194556A true CN102194556A (en) | 2011-09-21 |
| CN102194556B CN102194556B (en) | 2014-08-13 |
Family
ID=44602460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110068527.4A Expired - Fee Related CN102194556B (en) | 2010-03-19 | 2011-03-17 | Center fastening type insulation sleeve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5005059B2 (en) |
| CN (1) | CN102194556B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110268485A (en) * | 2017-01-31 | 2019-09-20 | 泰科电子瑞侃有限责任公司 | High power casing for adverse circumstances |
| CN113851286A (en) * | 2021-08-12 | 2021-12-28 | 国网新疆电力有限公司电力科学研究院 | Modularized high-voltage insulating sleeve for experiment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3059163B1 (en) | 2015-02-18 | 2019-06-19 | Safran Landing Systems UK Limited | Aircraft assembly |
| CN109649688B (en) * | 2018-12-27 | 2022-07-12 | 上海复合材料科技有限公司 | Compressing sleeve for compressing and releasing mechanism and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193887A (en) * | 1997-03-17 | 1998-09-23 | Gec阿尔斯托姆T&D公司 | Compounded isolative shell for circuit-breaker of electric power generator |
| JP2006107895A (en) * | 2004-10-05 | 2006-04-20 | Ngk Insulators Ltd | Conductive glazed bushing |
| CN201256039Y (en) * | 2008-08-12 | 2009-06-10 | 黎琛 | Insulator component for power transmission and conversion capacitor |
| CN201348901Y (en) * | 2008-12-30 | 2009-11-18 | 山东泰开互感器有限公司 | Insulating bushing of high-voltage power equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0896640A (en) * | 1994-09-20 | 1996-04-12 | Toshiba Corp | Bushing device |
| JPH0945169A (en) * | 1995-08-01 | 1997-02-14 | Ngk Insulators Ltd | Center clamp bushing |
| JPH10188702A (en) * | 1996-11-07 | 1998-07-21 | Ngk Insulators Ltd | Bushing improved in internal surface dirt |
-
2010
- 2010-03-19 JP JP2010064682A patent/JP5005059B2/en not_active Expired - Fee Related
-
2011
- 2011-03-17 CN CN201110068527.4A patent/CN102194556B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193887A (en) * | 1997-03-17 | 1998-09-23 | Gec阿尔斯托姆T&D公司 | Compounded isolative shell for circuit-breaker of electric power generator |
| JP2006107895A (en) * | 2004-10-05 | 2006-04-20 | Ngk Insulators Ltd | Conductive glazed bushing |
| CN201256039Y (en) * | 2008-08-12 | 2009-06-10 | 黎琛 | Insulator component for power transmission and conversion capacitor |
| CN201348901Y (en) * | 2008-12-30 | 2009-11-18 | 山东泰开互感器有限公司 | Insulating bushing of high-voltage power equipment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110268485A (en) * | 2017-01-31 | 2019-09-20 | 泰科电子瑞侃有限责任公司 | High power casing for adverse circumstances |
| CN110268485B (en) * | 2017-01-31 | 2021-03-09 | 泰科电子瑞侃有限责任公司 | High power bushing for harsh environments |
| US10971832B2 (en) | 2017-01-31 | 2021-04-06 | Tyco Electronics Raychem Gmbh | High-power bushing for harsh environments |
| CN113851286A (en) * | 2021-08-12 | 2021-12-28 | 国网新疆电力有限公司电力科学研究院 | Modularized high-voltage insulating sleeve for experiment |
| CN113851286B (en) * | 2021-08-12 | 2024-04-02 | 国网新疆电力有限公司电力科学研究院 | Modularized high-voltage insulating sleeve for experiment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5005059B2 (en) | 2012-08-22 |
| CN102194556B (en) | 2014-08-13 |
| JP2011198638A (en) | 2011-10-06 |
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Granted publication date: 20140813 Termination date: 20200317 |