WO2017166979A1 - 绝缘子及其胶装方法 - Google Patents

绝缘子及其胶装方法 Download PDF

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Publication number
WO2017166979A1
WO2017166979A1 PCT/CN2017/075851 CN2017075851W WO2017166979A1 WO 2017166979 A1 WO2017166979 A1 WO 2017166979A1 CN 2017075851 W CN2017075851 W CN 2017075851W WO 2017166979 A1 WO2017166979 A1 WO 2017166979A1
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WIPO (PCT)
Prior art keywords
glue
insulator
wall
disposed
sleeve portion
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PCT/CN2017/075851
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English (en)
French (fr)
Inventor
马斌
倪桂炎
张鑫鑫
沈媛媛
姜建飞
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江苏神马电力股份有限公司
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Publication of WO2017166979A1 publication Critical patent/WO2017166979A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/38Fittings, e.g. caps; Fastenings therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B19/00Apparatus or processes specially adapted for manufacturing insulators or insulating bodies

Definitions

  • the invention relates to a power transmission and transformation equipment for a power industry, in particular to an insulator and a glue mounting method thereof.
  • insulators have been widely used in the power industry. Flanges are fixed on insulators for connecting other equipment, and vertical glue methods are often used. When the insulator end flange is vertically glued, the glue agent is injected from the glue injection hole, the gas is discharged from the upper end of the flange, and after the glue agent is solidified, the sealant is injected from the top of the flange to seal the glue. After the end of the glue and seal is completed, the hoisting insulator is replaced by the other end to continue the glue and seal.
  • the vertical plastic structure can facilitate the filling, venting and curing of liquid adhesives and sealants, but as the voltage level continues to increase, the diameter and height of the products are also increasing, vertical glue and sealant
  • the drawbacks are also becoming more and more prominent. In the process of hoisting and curing, the requirements for the height of the plant, the requirements for lifting equipment and the safety are getting higher and higher. In addition, each time the lifting can only be glued to one end of the flange, and the glue can be sealed after the curing agent is cured, and the production efficiency is low.
  • one of the objects of the present invention is to provide an insulator capable of horizontally binding, capable of simultaneously binding flanges at both ends, and having high production efficiency.
  • an insulator comprising an insulator, a shed, and a flange, the insulator including end faces on both sides and an insulating outer wall between the end faces, the shed covering On the outer wall of the insulating body, the flange is connected to an end of the insulator, the flange includes a bottom portion, a sleeve portion extending from the bottom portion, and a sealing portion is formed between an inner wall of the middle portion of the sleeve portion and the outer wall of the insulating body
  • the glue chamber is filled with glue, and at least one injection hole and at least one vent hole are disposed on the wall of the sleeve portion, and the injection hole and the vent hole are communicated with the cavity.
  • the glue injection hole and the above-mentioned vent hole and the above-mentioned sealing cavity are provided, the glue is injected into the cavity through the injection hole during the gluing, and the air is discharged through the vent hole, so that the insulator can be realized.
  • Horizontal plastic binding can be used to glue both ends of the flange at the same time, without lifting, and the production efficiency is high.
  • a first sealing groove is disposed between the inner wall of the sleeve portion of the sleeve portion and the outer wall of the insulating body, and a first sealing member is disposed in the first sealing groove.
  • a second sealing groove is disposed between the inner wall of the bottom portion of the sleeve portion and the outer wall of the insulating body, and a second sealing member is disposed in the second sealing groove.
  • the sealing member is arranged to make the sealing cavity of the rubber container reliable, and the glue liquid is prevented from seeping out from the bottom portion of the sleeve portion to avoid wasting glue and ensuring the surface of the insulator is clean.
  • At least one of the above-mentioned glue injection holes and the above-mentioned vent holes are obliquely disposed, and an axis thereof is at an acute angle with the insulator axis.
  • the volume of the glue contained in the injection hole or the vent hole is increased, and the glue is prevented from shrinking due to the expansion and contraction of the glue due to thermal expansion and contraction, thereby preventing the glue from being insufficient.
  • the venting hole is disposed on a wall of the tube portion adjacent to the nozzle portion of the sleeve portion, and the priming hole is disposed on a wall of the tube near the bottom portion of the sleeve portion.
  • the glue injection hole and the exhaust hole are disposed on the same bus bar of the casing wall of the casing.
  • the glue injection device is directly removed, and the insulator is not required to be immediately blocked.
  • the insulator can be directly left to wait for the glue to solidify before performing subsequent operations to avoid leakage of glue due to improper operation during sealing.
  • At least one of the above-mentioned glue injection hole and the above-mentioned vent hole is a threaded hole.
  • the threaded hole can be arranged to ensure reliable sealing, preventing moisture from penetrating into the adhesive cavity along the injection hole and the vent hole, thereby causing the glue to age.
  • At least one glue groove is disposed in the plastic cavity.
  • the setting of the glue tank can make more glue liquid in the glue cavity, the glue effect is better, and the connection between the flange and the insulator is stronger.
  • the inner wall of the sleeve portion of the sleeve portion is provided with a sealant glue tank, the sealant tank is filled with a sealant, and the tube wall between the end face of the sleeve portion and the first seal groove is At least one sealant injection hole and at least one seal vent hole are disposed, and the sealant injection hole and the seal vent hole communicate with the sealant tank. This can be injected into the sealant tank through the glue injection hole.
  • the sealant is inserted into the sealant, and the air is discharged through the seal vent hole, thereby sealing the gap between the sleeve portion of the sleeve portion and the root of the shed to prevent moisture from infiltrating along the tube of the sleeve portion, thereby causing aging of the glue.
  • the sealant venting hole is an exhaust groove disposed circumferentially along the end face of the sleeve portion. This makes the exhaust effect better, the sealant injection is more sufficient, and the sealing effect is good.
  • Another object of the present invention is to provide an insulator bonding method, the insulator being the above insulator, comprising the following steps:
  • the above-mentioned insulator adopts the plastic binding method, and can realize horizontal plastic binding, and has high production efficiency.
  • Figure 1 is a cross-sectional view showing an insulator 100 according to a first embodiment of the present invention
  • Figure 2 is a partially enlarged cross-sectional view showing an insulator 100 according to Embodiment 1 of the present invention
  • FIG. 3 is a partial cross-sectional view showing an end portion of an insulator 100 according to Embodiment 1 of the present invention.
  • Figure 4 is a partially enlarged cross-sectional view showing an insulator 200 according to a second embodiment of the present invention.
  • Figure 5 is a schematic view of the flange 230 of the insulator 200 according to the second embodiment of the present invention.
  • Figure 6 is a cross-sectional view showing the insulator upper flange 330 of the third embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the insulator 100 of the first embodiment of the present invention includes an insulator 110, a shed 120, and a flange 130.
  • the insulator 110 includes an end surface 111 on both sides, an end surface 112, and an insulating outer wall 113 between the end surface 111 and the end surface 112.
  • the shed 120 is wrapped over the outer insulating wall 113, and the flange 130 is attached to the end of the insulator 110.
  • the flange 130 is glued to the end of the insulator 110.
  • the flange 130 in this embodiment includes a bottom portion 131 and a sleeve portion 132 extending from the bottom portion 131.
  • a sealed cavity 101 is formed between the inner wall of the middle portion of the sleeve portion 132 and the outer wall 113 of the insulation, and the glue chamber 101 is filled with the glue 102.
  • An injection hole 103 and a vent hole 104 are disposed on the inner wall of the sleeve portion 132. The injection hole 103 and the vent hole 104 communicate with the cavity 101.
  • the insulator 100 in this embodiment is provided with the glue injection hole 103 and the vent hole 104 and the sealed cavity 101, and the glue 102 is injected into the cavity 101 through the injection hole 103 during the gluing, and the exhaust 102 is simultaneously exhausted.
  • the hole 104 discharges air, so that the insulator 100 can be horizontally assembled, and the flanges at both ends can be glued at the same time, without lifting, thereby improving production efficiency and ensuring production safety.
  • the insulator 110 is an epoxy resin impregnated glass fiber wound insulator or a ceramic body or other composite material insulator
  • the shed 120 is a silicone rubber shed or a porcelain shed or other composite shed
  • the flange 130 is aluminum.
  • the sleeve portion 132 is sleeved at the end of the insulator 110 to fix the flange 130 to the insulator 110.
  • a first sealing groove 105 is disposed on the inner wall of the nozzle portion 132, and a first sealing ring 106 is disposed in the first sealing groove 105.
  • the second sealing groove 107 is disposed on the inner wall of the bottom portion of the sleeve portion 132, and the second sealing is provided.
  • a second seal ring 108 is disposed in the groove 107; a groove 133 is circumferentially disposed on the inner wall of the middle portion of the sleeve portion 132, and the groove 133 is located between the first seal groove 105 and the second seal groove 107 in the axial direction of the insulator 110.
  • the glue injection hole 103 and the vent hole 104 are disposed on the tube wall of the sleeve portion 132 and communicate with the groove 133 to communicate with the glue chamber 101. During the gluing, the glue 102 is injected into the cavity 101 through the injection hole 103, and the air is discharged through the vent 104 to achieve the gluing of the flange 130.
  • the cross section of the groove 133, the first seal groove 105, and the second seal groove 107 in the axial direction of the insulator 110 is rectangular.
  • First sealing ring 106, second sealing ring 108 All O-rings can be made of any material such as EPDM, nitrile rubber, fluororubber or fluorosilicone rubber.
  • the present invention is not limited thereto, and the cross section of the groove 133, the first sealing groove 105, and the second sealing groove 107 along the axial direction of the insulator 110 may be trapezoidal, triangular, or the like; the first sealing ring 106 and the second sealing ring.
  • a rectangular sealing ring, a trapezoidal sealing ring, a special-shaped sealing ring or the like may be used as long as the sealing cavity 101 can be formed between the inner wall of the middle portion of the sleeve portion 132 and the outer insulating wall 113.
  • the inner wall of the sleeve portion 132 is provided with a glue injection hole 103 and an air vent 104.
  • the axes of the glue injection hole 103 and the vent hole 104 are perpendicular to the axis of the insulator 110, and both are threaded holes.
  • the glue injection hole 103 and the vent hole 104 are disposed on the same bus bar of the tube wall of the sleeve portion 132, and the vent hole 104 is disposed on the tube wall near the nozzle portion of the sleeve portion 132, and the glue injection hole 103 is disposed close to the sleeve.
  • the tube portion 132 is on the tube wall of the bottom portion of the tube.
  • the glue injection device is directly removed, and it is not necessary to immediately block the plug, and can be directly left to wait for the glue to solidify before performing the subsequent operation, thereby avoiding leakage of the glue caused by improper operation during the plugging, and also injecting the glue. More fully, the glue effect is better.
  • the glue injection hole 103 and the vent hole 104 may also be provided as a light hole, and may also be disposed at any position on the same bus bar of the tube portion 132 as long as it can communicate with the glue chamber 101. Just fine.
  • a glue groove 134 is further disposed in the cavity 101.
  • the solid groove 134 has a rectangular cross section along the axial direction of the insulator 110, and may obviously have other shapes such as a trapezoid or a triangle.
  • four solid glue grooves 134 are disposed on the inner wall of the groove 133, and four solid glue grooves 134 are disposed on the outer insulating wall 113 of the corresponding position in the cavity 101. It is obvious that the present invention is not limited thereto, and one or more glue grooves 134 may be provided only on the inner wall of the recess 133 or only on the outer insulating wall 113 of the corresponding position in the cavity 101.
  • a sealing glue tank 140 is further disposed on the inner wall of the nozzle portion 132, and the sealing glue tank 140 is filled with the sealing agent 141, and the sleeve end portion of the sleeve portion 132 and the first sealing groove
  • a sealant injection hole 142 and a seal vent hole 143 are disposed on the pipe wall between the 105, and the sealant injection hole 142 and the seal vent hole 143 are both in communication with the sealant tank 140.
  • the sealing cavity 140 has a rectangular cross section along the axial direction of the insulator 110, and a cavity formed between the sealing adhesive groove 140 and the outer circumferential surface of the root of the shed 120 is used for accommodating the sealing agent 141.
  • the sealant injection hole 142 and the seal vent hole 143 are both disposed on the same bus bar on the tube wall of the sleeve portion 132, and the axes are insulated from each other.
  • the body 110 is perpendicular to the axis and is a light aperture.
  • the present invention is not limited thereto, and the cross section of the sealing adhesive tank 140 along the axial direction of the insulator 110 may also be other shapes such as a trapezoid or a triangle.
  • the sealant injection hole 142 and the sealant vent 143 may also be provided as threaded holes, or may be disposed on different bus bars on the tube wall of the sleeve portion 132.
  • a plurality of reinforcing ribs 135 and a plurality of through holes 136 are also disposed on the flange 130.
  • the reinforcing rib 135 is coupled to the bottom portion 131 and the sleeve portion 132, and is uniformly disposed circumferentially along the sleeve portion 132 for increasing the strength and rigidity of the flange 130.
  • the through holes 136 are circumferentially evenly disposed on the bottom portion 131 for connection of the insulator 100 to an external device.
  • a method for binding the insulator 100 is illustrated, which includes the following steps:
  • the insulator 110 is placed horizontally, the flange 130 is placed at the end of the insulator 110, and the first sealing ring 106 is installed in the first sealing groove 105, and the second sealing ring 108 is installed in the second sealing groove 107.
  • the insulator 110 and the flange 130 are clamped by a clamping device, so that a sealed cavity 101 is formed between the inner wall of the sleeve portion 132 and the outer insulating wall 113;
  • the glue injection hole 103 and the vent hole 104 are placed at the highest position in the vertical direction, and the glue liquid is injected into the glue cavity 101 through the glue injection hole 103 by using the glue injection device, and the air is discharged through the vent hole 104. After the glue 102 is fully injected, the glue injection device is removed;
  • the sealant 141 is injected into the sealant glue tank 140 through the sealant injection hole 142, and the air is discharged through the seal vent hole 143, and the glue injection device is removed after the sealant 141 is fully injected. ;
  • a rubber stopper or the like is inserted into the sealant injection hole 142 and the sealant vent hole 143, and the sealant 141 is filled therein to be sealed.
  • the glue 102 is a common adhesive, which is liquid at normal temperature; the sealant 141 Room temperature vulcanized silicone rubber can be used, and it is a semi-paste at normal temperature.
  • step 4 can also be performed after the completion of the step 2.
  • step 5 and step 2 above may also be performed simultaneously, or step 2 may be performed after completion of step 5.
  • the above step 7 can also be performed after the completion of the step 5.
  • the horizontal binding of the insulator 100 can be realized, and the flanges at both ends can be glued at the same time, without lifting, thereby improving production efficiency and ensuring production safety.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the second embodiment of the present invention is substantially the same as the first embodiment.
  • the first sealing groove 205 is disposed at the nozzle portion with the sleeve portion 232.
  • a first sealing ring 206 is disposed in the first sealing groove 205 on the insulating outer wall 213 of the corresponding position;
  • the second sealing groove 207 is disposed on the insulating outer wall 213 corresponding to the bottom portion of the sleeve portion 232, and the second sealing
  • a second sealing ring 208 is disposed in the groove 207;
  • the groove 233 is disposed on the insulating outer wall 213 between the first sealing groove 105 and the second sealing groove 107.
  • a sealing cavity 201 is formed between the inner wall of the middle portion of the sleeve portion 232 and the outer insulating wall 213.
  • the injection hole 203 and the vent hole 204 are disposed obliquely.
  • the axis of the injection hole 203 forms an angle ⁇ with the axis of the insulator 210
  • the axis of the vent hole 204 forms an angle ⁇ with the axis of the insulator 210.
  • Both ⁇ and ⁇ are acute angles.
  • the angle values of ⁇ and ⁇ are equal.
  • the present invention is not limited thereto, and the ⁇ and ⁇ angle values may not be equal.
  • the glue injection hole 203 and the vent hole 204 may also be disposed obliquely.
  • the sealant venting hole 243 is disposed at the end of the sleeve portion 232, and its axis is parallel to the axis of the insulator 210.
  • the sealant injection hole 242 and the sealant vent 243 may also be at least one obliquely disposed with an axis at an acute angle to the axis of the insulator 210.
  • a plurality of sealant injection holes 242 and a plurality of seal vent holes 243 may be disposed on the wall of the sleeve portion 232.
  • the sealant injection holes 242 and the seal vent holes 243 may be located in the circumferential direction of the sleeve portion 232.
  • FIG. 5 is a schematic diagram of the flange 230 (which The middle rib is not shown), and the seal vent hole may also be disposed as the exhaust groove 244 disposed circumferentially along the end face of the sleeve portion 232, so that the exhaust effect is better, the sealant injection is more sufficient, and the sealant is injected more fully. The glue effect is better.
  • the method of binding the insulator 200 of the second embodiment is substantially similar to that of the first embodiment, and details are not described herein again.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the third embodiment of the present invention is substantially the same as the first embodiment.
  • the sleeve portion 332 of the flange 330 of the insulator of the third embodiment is provided with four injection holes 303.
  • two venting holes 304 are evenly distributed along the circumferential direction of the same section in the radial direction of the sleeve portion 332.
  • four injection molding devices are used to simultaneously inject the glue through the four injection holes 303, which can greatly increase the injection speed and improve the production efficiency.
  • the present invention is not limited thereto, and the injection hole 303 and the vent hole 304 may be disposed at any position in the circumferential direction of the sleeve portion 332 as long as it can communicate with the cavity.
  • the number of the glue injection holes 303 is not limited to four, and the number of the vent holes 304 is not limited to two, and can be arbitrarily set.
  • the method for binding the insulator in this embodiment is basically similar to that of the first embodiment, except that when performing the above-mentioned bonding step 2, one of the vent holes 304 is placed at the highest position in the vertical direction, The four glue injection devices simultaneously inject the glue through the four injection holes 303, and when the glue is about to reach the vent hole 304 located in the vertical direction, the vent hole 304 is blocked, and the glue is continuously injected until the glue is poured.
  • the glue chamber is filled with glue, the four glue injection devices are removed and the four glue holes 303 are quickly blocked.

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  • Insulators (AREA)
  • Materials For Medical Uses (AREA)

Abstract

一种绝缘子及其胶装方法。该绝缘子(100)包括绝缘体(110)、伞裙(120)以及法兰(130),该绝缘体包括两侧的端面(111、112)以及位于两端面之间的绝缘体外壁(113),伞裙包覆在该绝缘体外壁上,法兰连接在绝缘体的端部。该法兰包括底部(131)、由底部延伸而出的套管部(132),该套管部中部的内壁与绝缘体外壁之间设置密封容胶腔(101),该容胶腔中填充胶液(102),套管部管壁上设置至少一个注胶孔(103)和至少一个排气孔(104),注胶孔和排气孔均与容胶腔连通。该绝缘子可实现卧式胶装,可以同时胶装两端法兰,无需吊装,生产效率高。

Description

绝缘子及其胶装方法 技术领域
本发明涉及一种电力行业输变电用设备,具体是一种绝缘子及其胶装方法。
背景技术
目前,绝缘子在电力行业已得到广泛应用,法兰固定在绝缘子上用于连接其他设备,多采用立式胶装方法。对绝缘子端部法兰进行立式胶装时,先将胶装剂从注胶孔注入,气体从法兰上端排出,胶装剂固化后,再从法兰顶端注入封胶剂进行封胶即可;在一端胶装和封胶完成后,吊装绝缘子换另外一端来继续胶装和封胶。
立式胶装结构能够方便液态的胶装剂和封胶剂的填充、排气和固化,但是随着电压等级的不断提升,产品直径和高度也不断增大,立式胶装和封胶的弊端也越来越凸显,在吊装、固化过程中对厂房的高度、吊装设备的要求和安全的要求越来越高。此外每次吊装只能胶装一端法兰,且需待胶装剂固化后才能封胶,生产效率较低。
发明内容
针对现有技术的不足,本发明的目的之一是提供一种绝缘子,该绝缘子能够进行卧式胶装,可同时胶装两端法兰,生产效率高。
为实现上述发明目的,本发明所采用的技术手段如下:一种绝缘子,包括绝缘体、伞裙以及法兰,该绝缘体包括两侧的端面以及位于两端面之间的绝缘体外壁,上述伞裙包覆在该绝缘体外壁上,上述法兰连接在上述绝缘体的端部,该法兰包括底部、由该底部延伸而出的套管部,该套管部中部的内壁与上述绝缘体外壁之间形成密封容胶腔,该容胶腔中填充胶液,上述套管部管壁上设置至少一个注胶孔和至少一个排气孔,上述注胶孔和上述排气孔均与上述容胶腔连通。
上述绝缘子,由于设置了上述注胶孔和上述排气孔以及上述密封容胶腔,在胶装时通过注胶孔向容胶腔中注入上述胶液,同时通过排气孔排出空气,使得绝缘子可实现卧式胶装,可以同时胶装两端法兰,无需吊装,生产效率高。
优选地,上述套管部管口部分的内壁与上述绝缘体外壁之间设置第一密封槽,该第一密封槽中设置第一密封件。
优选地,上述套管部管底部分的内壁与上述绝缘体外壁之间设置第二密封槽,该第二密封槽中设置第二密封件。设置该密封件使得容胶腔密封可靠,避免胶液从套管部管底部分渗出从而避免浪费胶液,保证绝缘子表面清洁。
优选地,上述注胶孔与上述排气孔中至少一个斜向设置,且其轴线与上述绝缘体轴线呈锐角。这样使得注胶孔或排气孔中容置胶液的体积有所增大,防止固化胶液时由于热胀冷缩导致胶液体积收缩而引起注胶不充分,避免影响胶装牢固度。
优选地,上述排气孔设置在靠近上述套管部管口部分的管壁上,上述注胶孔设置在靠近上述套管部管底部分的管壁上。这样设置可以使得胶液注入更充分,胶装效果更好。
优选地,上述注胶孔与上述排气孔设置在上述套管部管壁的同一母线上。这样在注胶结束后直接移除注胶装置,无需立即封堵,绝缘子可直接静置等待胶液固化后再进行后续操作,避免封堵时操作不当引起胶液渗漏。
优选地,上述注胶孔和上述排气孔中至少一个为螺纹孔。设置该螺纹孔可以使得封堵可靠,防止水汽沿注胶孔和排气孔渗入容胶腔中导致胶液老化。
优选地,上述容胶腔中设置至少一道固胶槽。设置该固胶槽可以使得容胶腔中储存更多的胶液,胶装效果更好,法兰与绝缘体的连接更牢固。
优选地,上述套管部管口部分的内壁上设置封胶容胶槽,该封胶容胶槽中填充封胶剂,上述套管部管口端面与上述第一密封槽之间的管壁上设置至少一个封胶注胶孔和至少一个封胶排气孔,该封胶注胶孔和该封胶排气孔均与上述封胶容胶槽连通。这样可通过封胶注胶孔向封胶容胶槽中注 入封胶剂,同时通过封胶排气孔排出空气,从而将套管部管口部分与伞裙根部之间的间隙封堵,防止水汽沿套管部管口渗入导致胶液老化。
优选地,上述封胶排气孔为沿套管部管口端面周向设置的排气槽。这样使得排气效果更好,封胶剂注入更充分,封胶效果好。
本发明的目的之二是提供一种绝缘子胶装方法,该绝缘子为上述的绝缘子,包括以下步骤:
①将上述绝缘体卧式安放,套装上述法兰,使上述套管部内壁与上述绝缘体外壁之间形成上述密封容胶腔;
②通过上述注胶孔注入上述胶液,同时通过上述排气孔排出空气;
③固化上述胶液。
上述绝缘子采用该胶装方法,可实现卧式胶装,生产效率高。
附图说明
图1是本发明实施例一的绝缘子100的剖视图;
图2是本发明实施例一的绝缘子100的局部放大剖视图;
图3是本发明实施例一的绝缘子100端部的局部剖面示意图;
图4是本发明实施例二的绝缘子200的局部放大剖视图;
图5是本发明实施例二的绝缘子200上法兰230的示意图;
图6是本发明实施例三的绝缘子上法兰330的剖面示意图。
具体实施方式
根据要求,这里将披露本发明的具体实施方式。然而,应当理解的是,这里所披露的实施方式仅仅是本发明的典型例子而已,其可体现为各种形式。因此,这里披露的具体细节不被认为是限制性的,而仅仅是作为权利要求的基础以及作为用于教导本领域技术人员以实际中任何恰当的方式不同地应用本发明的代表性的基础,包括采用这里所披露的各种特征并结合这里可能没有明确披露的特征。
实施例一:
如图1所示,本发明第一实施例的绝缘子100包括:绝缘体110、伞裙120和法兰130。绝缘体110包括两侧的端面111、端面112以及位于端面111和端面112之间的绝缘体外壁113。伞裙120包覆在绝缘体外壁113上,法兰130连接在绝缘体110的端部。具体地,法兰130胶装于绝缘体110端部。
参见图2,本实施例中的法兰130包括底部131以及由底部131延伸而出的套管部132。套管部132中部的内壁与绝缘体外壁113之间形成密封容胶腔101,容胶腔101中填充胶液102。套管部132内壁上设置一个注胶孔103和一个排气孔104,注胶孔103和排气孔104与容胶腔101连通。
本实施例中的绝缘子100由于设置了注胶孔103和排气孔104以及密封容胶腔101,在胶装时通过注胶孔103向容胶腔101中注入胶液102,同时通过排气孔104排出空气,使得绝缘子100可实现卧式胶装,可以同时胶装两端法兰,无需吊装,提高生产效率,保证生产安全。
在本实施例中,绝缘体110为环氧树脂浸渍玻璃纤维缠绕绝缘体或瓷体或其他复合材料绝缘体,伞裙120为硅橡胶伞裙或瓷伞裙或其他复合材料伞裙,法兰130为铝合金或不锈钢等金属材料制成。
套管部132套设在绝缘体110的端部,使法兰130固定在绝缘体110上。套管部132管口部分的内壁上设置第一密封槽105,第一密封槽105中设置第一密封圈106;套管部132管底部分的内壁上设置第二密封槽107,第二密封槽107中设置第二密封圈108;套管部132中部的内壁上周向设置凹槽133,凹槽133在绝缘体110轴线方向上位于第一密封槽105和第二密封槽107之间。通过设置第一密封槽105、第一密封圈106、第二密封槽107、第二密封圈108以及凹槽133,使得套管部132中部的内壁与绝缘体外壁113之间形成密封容胶腔101。注胶孔103和排气孔104设置在套管部132管壁上并与凹槽133连通从而与容胶腔101连通。胶装时,通过注胶孔103向容胶腔101中注入胶液102,同时通过排气孔104排出空气,实现法兰130的胶装。
具体地,在本实施例中,凹槽133、第一密封槽105、第二密封槽107沿绝缘体110轴线方向的截面均为矩形。第一密封圈106、第二密封圈108 均为O型密封圈,可采用三元乙丙、丁腈橡胶、氟橡胶或氟硅橡胶等材料中的任一材料制作。当然,本发明不局限于此,凹槽133、第一密封槽105、第二密封槽107沿绝缘体110轴线方向的截面可以为梯形、三角形等其他形状;第一密封圈106、第二密封圈108也可以采用矩形密封圈、梯形密封圈、异形密封圈等,只要能够使得套管部132中部的内壁与绝缘体外壁113之间形成密封容胶腔101即可。
在本实施例中,套管部132内壁上设置一个注胶孔103和一个排气孔104,注胶孔103和排气孔104的轴线均与绝缘体110轴线垂直,且均为螺纹孔。注胶孔103与排气孔104设置在套管部132管壁的同一母线上,且排气孔104设置在靠近套管部132管口部分的管壁上,注胶孔103设置在靠近套管部132管底部分的管壁上。这样在注胶结束后直接移除注胶装置,无需立即封堵,可直接静置等待胶液固化后再进行后续操作,避免封堵时操作不当引起胶液渗漏,同时也使得胶液注入更充分,胶装效果更好。当然,本发明不局限于此,注胶孔103和排气孔104也可设置为光孔,并且也可以设置在套管部132管壁同一母线上任意位置,只要能够与容胶腔101连通即可。
在本实施例中,容胶腔101中还设置了固胶槽134。固胶槽134沿绝缘体110轴线方向的截面为矩形,显然也可以为梯形、三角形等其他形状。具体地,在凹槽133内壁上设置四道固胶槽134,在容胶腔101中对应位置的绝缘体外壁113上设置四道固胶槽134。显然,本发明并不局限于此,也可以仅在凹槽133内壁上或者仅在位于容胶腔101中对应位置的绝缘体外壁113上设置一道或多道固胶槽134。
在本实施例中,套管部132管口部分的内壁上还设置封胶容胶槽140,封胶容胶槽140中填充封胶剂141,套管部132管口端面与第一密封槽105之间的管壁上设置一个封胶注胶孔142和一个封胶排气孔143,封胶注胶孔142和封胶排气孔143均与封胶容胶槽140连通。具体地,封胶容胶槽140沿绝缘体110轴线方向的截面为矩形,封胶容胶槽140与伞裙120根部的外圆表面之间形成的腔体用于容纳封胶剂141。封胶注胶孔142和封胶排气孔143均设置在套管部132管壁上的同一母线上,其轴线均与绝缘 体110轴线垂直,且均为光孔。封胶时,通过封胶注胶孔142向封胶容胶槽140中注入封胶剂141,同时通过封胶排气孔143排出空气,从而将套管部132管口部分与伞裙120根部之间的间隙封堵,防止水汽沿套管部管口渗入导致胶液老化。当然,本发明不局限于此,封胶容胶槽140沿绝缘体110轴线方向的截面也可以为梯形、三角形等其他形状。封胶注胶孔142和封胶排气孔143也可以设置为螺纹孔,也可以设置在套管部132管壁上的不同母线上。
本实施例中,法兰130上还设置了若干加强筋135和若干通孔136。具体地,加强筋135与底部131和套管部132相连接,沿套管部132周向均匀设置,用于增加法兰130的强度和刚性。通孔136周向均匀设置在底部131上,用于绝缘子100与外部设备的连接。
参见图1至图3,阐述绝缘子100的胶装方法,包括以下步骤:
①将绝缘体110卧式安放,将法兰130套装在绝缘体110端部,并将第一密封圈106安装在第一密封槽105中,将第二密封圈108安装在第二密封槽107中,采用夹紧装置将绝缘体110和法兰130夹紧,从而使得套管部132内壁与绝缘体外壁113之间形成密封容胶腔101;
②将注胶孔103和排气孔104置于竖直方向上最高位置,使用注胶装置通过注胶孔103向容胶腔101中注入胶液102,同时通过排气孔104排出空气,待胶液102注入充分后移除注胶装置;
③固化胶液102;
④在注胶孔103和排气孔104中旋入螺钉或者塞入橡皮塞等,并向其中注满封胶剂141进行封堵;
⑤使用注胶装置通过封胶注胶孔142向封胶容胶槽140中注入封胶剂141,同时通过封胶排气孔143排出空气,待封胶剂141注入充分后移除注胶装置;
⑥固化封胶剂141;
⑦在封胶注胶孔142和封胶排气孔143中塞入橡皮塞等,并向其中注满封胶剂141进行封堵。
本实施例中,胶液102采用常见胶粘剂,常温下为液态;封胶剂141 可采用室温硫化硅橡胶,常温下为半膏体。
当然,本发明并不局限于此,上述步骤④也可在完成步骤②后进行。上述步骤⑤与步骤②也可同时进行,或者步骤⑤完成后再进行步骤②。上述步骤⑦也可在完成步骤⑤后进行。又或者仅需完成步骤①至步骤④,然后通过在伞裙120根部套装一辅助伞裙用于遮挡法兰130上端,从而防止水汽沿套管部132管口渗入。
通过上述步骤即可实现绝缘子100的卧式胶装,可以同时胶装两端法兰,无需吊装,提高生产效率,保证生产安全。
实施例二:
参见图4,本发明第二实施例与第一实施例基本相同,与第一实施例不同的是,第二实施例的绝缘子200中,第一密封槽205设置在与套管部232管口部分相对应位置的绝缘体外壁213上,第一密封槽205中设置第一密封圈206;第二密封槽207设置在与套管部232管底部分相对应位置的绝缘体外壁213上,第二密封槽207中设置第二密封圈208;凹槽233设置在绝缘体外壁213上,位于第一密封槽105和第二密封槽107之间。通过设置第一密封槽205、第一密封圈206、第二密封槽207、第二密封圈208以及凹槽233,使得套管部232中部的内壁与绝缘体外壁213之间形成密封容胶腔201。
本实施例中,注胶孔203和排气孔204均斜向设置,注胶孔203的轴线与绝缘体210轴线形成夹角α,排气孔204的轴线与绝缘体210轴线形成夹角β,α和β均为锐角。本实施例中α和β角度值相等。当然,本发明并不局限于此,α和β角度值也可以不相等。注胶孔203和排气孔204中也可以是任一个斜向设置。
本实施例中,封胶排气孔243设置在套管部232端部,其轴线与绝缘体210轴线平行。当然,本发明并不局限于此,封胶注胶孔242和封胶排气孔243中也可以是至少一个斜向设置,其轴线与绝缘体210轴线呈锐角。套管部232管壁上也可以设置多个封胶注胶孔242和多个封胶排气孔243,封胶注胶孔242和封胶排气孔243可以位于套管部232周向上任意位置,只要能够与封胶容胶槽连通即可。或者参见图5是法兰230的示意图(其 中加强筋未示出),封胶排气孔也可以设置为沿套管部232管口端面周向设置的排气槽244,这样使得排气效果更好,封胶剂注入更充分,封胶效果更好。
第二实施例的绝缘子200的胶装方法与第一实施例基本相似,在此不再赘述。
实施例三:
参见图6,本发明第三实施例与第一实施例基本相同,与第一实施例不同的是,第三实施例的绝缘子的法兰330的套管部332上设置四个注胶孔303和两个排气孔304,沿套管部332径向上同一截面的周向均匀分布。胶装时,采用四个注胶装置通过四个注胶孔303同时注入胶液,可以大大增加注胶速度,提高生产效率。显然,本发明中并不局限于此,注胶孔303和排气孔304也可以设置在套管部332周向上任意位置,只要能够与容胶腔连通即可。注胶孔303的个数不局限为四个,排气孔304的个数不局限为两个,均可以任意设置。
本实施例中的绝缘子的胶装方法与第一实施例基本相似,所不同的是,在进行上述胶装步骤②时,需将其中一个排气孔304置于竖直方向上最高位置,采用四个注胶装置通过四个注胶孔303同时注入胶液,当胶液即将在到达竖直方向上位于下方的排气孔304时将该排气孔304封堵,并继续注入胶液直至容胶腔中充满胶液,移除四个注胶装置并迅速将四个注胶孔303封堵即可。
本发明的技术内容及技术特点已揭示如上,然而可以理解,在本发明的创作思想下,本领域的技术人员可以对上述结构和材料作各种变化和改进,包括这里单独披露或要求保护的技术特征的组合,明显地包括这些特征的其它组合。这些变形和/或组合均落入本发明所涉及的技术领域内,并落入本发明权利要求的保护范围。

Claims (11)

  1. 一种绝缘子,包括绝缘体、伞裙以及法兰,所述绝缘体包括两侧的端面以及位于两所述端面之间的绝缘体外壁,所述伞裙包覆在所述绝缘体外壁上,所述法兰连接在所述绝缘体的端部,所述法兰包括底部、由所述底部延伸而出的套管部,其特征在于:所述套管部中部的内壁与所述绝缘体外壁之间形成密封容胶腔,所述容胶腔中填充胶液,所述套管部管壁上设置至少一个注胶孔和至少一个排气孔,所述注胶孔和所述排气孔均与所述容胶腔连通。
  2. 如权利要求1所述的绝缘子,其特征在于:所述套管部管口部分的内壁与所述绝缘体外壁之间设置第一密封槽,所述第一密封槽中设置第一密封件。
  3. 如权利要求1所述的绝缘子,其特征在于:所述套管部管底部分的内壁与所述绝缘体外壁之间设置第二密封槽,所述第二密封槽中设置第二密封件。
  4. 如权利要求1所述的绝缘子,其特征在于:所述注胶孔与所述排气孔中至少一个斜向设置,且其轴线与所述绝缘体轴线呈锐角。
  5. 如权利要求1所述的绝缘子,其特征在于:所述排气孔设置在靠近所述套管部管口部分的管壁上,所述注胶孔设置在靠近所述套管部管底部分的管壁上。
  6. 如权利要求1所述的绝缘子,其特征在于:所述注胶孔与所述排气孔设置在所述套管部管壁的同一母线上。
  7. 如权利要求1所述的绝缘子,其特征在于:所述注胶孔和所述排气孔中至少一个为螺纹孔。
  8. 如权利要求1所述的绝缘子,其特征在于:所述容胶腔中设置至少一道 固胶槽。
  9. 如权利要求1所述的绝缘子,其特征在于:所述套管部管口部分的内壁上设置封胶容胶槽,所述封胶容胶槽中填充封胶剂,所述套管部管口端面与所述第一密封槽之间的管壁上设置至少一个封胶注胶孔和至少一个封胶排气孔,所述封胶注胶孔和所述封胶排气孔均与所述封胶容胶槽连通。
  10. 如权利要求9所述的绝缘子,其特征在于:所述封胶排气孔为沿套管部管口端面周向设置的排气槽。
  11. 一种绝缘子胶装方法,所述绝缘子为权利要求1所述的绝缘子,其特征在于包括以下步骤:
    ①将所述绝缘体卧式安放,套装所述法兰,使所述套管部内壁与所述绝缘体外壁之间形成所述密封容胶腔;
    ②通过所述注胶孔注入所述胶液,同时通过所述排气孔排出空气;
    ③固化所述胶液。
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