WO2018006713A1 - Barre de tirage d'isolation - Google Patents

Barre de tirage d'isolation Download PDF

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Publication number
WO2018006713A1
WO2018006713A1 PCT/CN2017/089674 CN2017089674W WO2018006713A1 WO 2018006713 A1 WO2018006713 A1 WO 2018006713A1 CN 2017089674 W CN2017089674 W CN 2017089674W WO 2018006713 A1 WO2018006713 A1 WO 2018006713A1
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WO
WIPO (PCT)
Prior art keywords
wedge
insulating tube
insulating
shaped
insertion end
Prior art date
Application number
PCT/CN2017/089674
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English (en)
Chinese (zh)
Inventor
马斌
方江
朱兴祥
高俊
汪强
Original Assignee
江苏神马电力股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏神马电力股份有限公司 filed Critical 江苏神马电力股份有限公司
Publication of WO2018006713A1 publication Critical patent/WO2018006713A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/056—Tools for actuating a switch

Definitions

  • the invention relates to a power transmission insulation device, in particular to an insulation rod.
  • Insulated tie rods are important components of circuit breakers. They have high requirements on electrical and mechanical properties. The quality of insulation rods directly affects the reliability of circuit breakers and the safe operation of the power grid.
  • the insulating tie rod generally comprises an insulating tube and a joint glued on both ends of the insulating tube, and an adhesive is adhered between the inner wall surface of the insulating tube and the outer surface of the joint to form an insulating tie rod.
  • Conventional insulating rods generally have a certain roughness on the inner wall of the insulating tube and the outer wall of the joint or a threaded fit to improve the bonding strength.
  • the tensile force acting on the joint will be transmitted to the insulating tube, causing the bonding and fixing structure between the inner wall surface of the insulating tube and the outer surface of the joint to be concentrated.
  • the force exceeds a certain limit the bonded solid structure will be Destruction, but the tensile structure can withstand limited tension, the thread structure is easy to wear due to tensile force, the connection strength is low, the joint and the insulation tube are easy to fall off, causing serious power failure, even endangering personal safety and improving operation and maintenance. cost.
  • the object of the present invention is to provide an insulating tie rod which is convenient to manufacture, has high tensile strength, and is safe and reliable.
  • an insulating tie rod comprising an insulating tube and a joint coupled to both ends of the insulating tube, the joint comprising an insertion end axially mated with the insulating tube and An exposed end extending from the insertion end, a wedge-shaped adhesive cavity is disposed between the insertion end and the insulating tube, and the wedge-shaped adhesive cavity is filled with glue.
  • the wedge-shaped rubber-filling cavity is arranged between the insertion end and the insulating tube, the wedge-shaped rubber-filling structure enables the insulating rod to disperse the force-receiving surface when subjected to the tensile force, thereby effectively improving the stress of the glued joint and improving the force.
  • Tensile strength safe and reliable.
  • the insulating tube has a straight cylindrical shape, and the insertion end is inserted into the insulating tube, and the wedge-shaped adhesive cavity is disposed between the outer wall of the insertion end and the inner wall of the insulating tube.
  • the insertion end is provided with a receiving cavity
  • the insulating tube is inserted into the receiving cavity
  • the wedge-shaped adhesive cavity is disposed between the inner wall of the receiving cavity and the outer wall of the insulating tube.
  • At least two through holes communicating with the wedge-shaped cavity are disposed on the insulating rod.
  • the insertion end or the insulating tube is provided with at least one wedge-shaped recess to form the wedge-shaped plastic cavity, and the bottom surface and the outer end surface of the wedge-shaped groove are wedge-shaped.
  • the wedge-shaped adhesive cavity can be conveniently formed, and the stepped rib formed between the bottom surface of the wedge-shaped groove and the end surface thereof and the wall surface of the insertion end or the insulating tube can bear the tensile force, can disperse the force surface, and effectively improve the binding
  • the force of the joint is increased, and the tensile strength is improved, which is safe and reliable.
  • the wedge-shaped recess is circumferentially disposed circumferentially along the axial direction of the insulating tube. This facilitates the processing of the wedge-shaped grooves and forms a continuous adhesive space, and avoids stress concentration caused by sudden changes in size, and avoids affecting the overall strength of the insulating tie rod.
  • the wedge grooves are at least two and disposed adjacent to each other along the axial direction of the insulating tube, and a cylindrical portion is disposed between two adjacent wedge grooves.
  • Such a plurality of wedge-shaped grooves respectively form relatively independent plastic cavities, and the small volume is easy to achieve uniform injection, thereby ensuring a good glue loading effect.
  • the diameter of the wedge-shaped groove away from the exposed end is smaller than the diameter of the exposed end. This facilitates the mating operation of the joint and the insulating tube, and the tensile performance is better due to the overall stress of the bonded structure when subjected to tension.
  • the diameter of the cylindrical section is adapted to the diameter of the insulating tube, and the cylindrical section is provided with at least one flow tank communicating with two adjacent wedge-shaped recesses.
  • the cylindrical section can serve as a reference to ensure the coaxiality of the mating, and can support the insulating tube or the tube wall of the receiving cavity to improve the strength of the mating portion.
  • the flow glue tank can make the glue liquid conveniently fill the wedge-shaped plastic cavity of the plurality of wedge-shaped grooves, and avoid the contact between the cylindrical section and the inner wall of the insulating tube is too tight, which affects the sufficient injection of the glue.
  • a portion of the insertion end away from the exposed end is a head, a first sealing groove is disposed between the head and the insulating tube, and a first sealing ring is disposed in the first sealing groove.
  • the wedge-shaped plastic cavity and the insulating pipe wall can be sealed, and the leakage of the glue liquid is prevented, thereby causing insufficient injection of the glue in the wedge-shaped cavity, thereby avoiding the influence of the bonding effect and avoiding the waste of the glue.
  • the portion of the insertion end adjacent to the exposed end is a tail portion, a second sealing groove is disposed between the tail portion and the insulating tube, and a second sealing ring is disposed in the second sealing groove.
  • the exposed end is provided with a stop at a position in contact with the end of the insulating tube, and the retaining edge abuts against the end surface of the insulating tube.
  • the retaining edge can be easily assembled and positioned by forming an abutting contact with the end of the insulating tube.
  • the joint is provided with an exhaust hole penetrating in the axial direction of the insulating tube. This makes it easy to fill the inside of the insulating tube with insulating gas to ensure insulation performance.
  • the insulating tube or the end of the insertion end is provided with a first tapered surface for easy fitting.
  • the insulating tube has an inner diameter equal to the insertion end insertion portion. This makes it easy to insert the insertion end into the insulating tube.
  • the inner diameter of the insertion portion of the insulating tube in the receiving chamber is equal. This makes it easy to insert the insulating tube into the receiving chamber.
  • a blocking member is disposed in the through hole. This can prevent moisture from penetrating into the wedge-shaped cavity by the through hole, which causes the cured glue to age and weaken the bond strength.
  • At least one glue groove is disposed in the wedge-shaped cavity.
  • the solid glue tank can be arranged to store more glue in the wedge-shaped rubber cavity, the bonding effect is better, and the connection between the joint and the insulating tube is stronger.
  • the through holes are provided on the same bus bar of the insulating tube. This makes it easy to see if the glue fills the wedge-shaped cavity.
  • At least one of the through holes is a threaded hole. This can increase the strength of the connection between the blocking member and the through hole, so that the sealing is reliable.
  • FIG. 1 is a partial cross-sectional view of an insulating tie rod 100 according to a first embodiment of the present invention
  • FIG. 2 is a partial enlarged cross-sectional view showing the connection of the joint 102 and the insulating tube 101 on the insulating tie rod 100 according to the first embodiment of the present invention
  • Figure 3 is a schematic view of a joint 102 in accordance with a first embodiment of the present invention.
  • Figure 4 is a partially enlarged cross-sectional view showing an insulating tube 101 according to Embodiment 1 of the present invention.
  • Figure 5 is a view showing a portion of the insulating tie rod upper joint 202 connected to the insulating tube 201 according to the second embodiment of the present invention. Enlarged sectional view;
  • Figure 6 is a partially enlarged cross-sectional view showing the connection of the insulating tie rod upper joint 302 and the insulating tube 301 according to the third embodiment of the present invention
  • Figure 7 is a partially enlarged cross-sectional view showing the connection of the insulating tie rod upper joint 402 and the insulating tube 401 according to the fourth embodiment of the present invention.
  • Figure 8 is a partially enlarged cross-sectional view showing the connection of the insulating tie rod upper joint 502 and the insulating tube 501 according to the fifth embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the insulating tie rod 100 of the present embodiment includes an insulating tube 101 in a straight cylindrical shape and a joint 102 coupled to both ends of the insulating tube 101.
  • the joint 102 includes an insulating tube 101 inserted axially along the insulating tube 101.
  • the insertion end 110 and the exposed end 120 extending from the insertion end 110.
  • a wedge-shaped adhesive cavity 130 is disposed between the outer wall of the insertion end 110 and the insulating tube 101.
  • the wedge-shaped adhesive cavity 130 is filled with a glue 131.
  • the insulating tube 101 is provided with two wedge-shaped adhesive cavities 130 on the wall corresponding to the insertion end 110. Through holes 103 that communicate with each other.
  • the insulating tube 101 is an epoxy resin impregnated glass fiber wound insulating tube or other composite insulating tube
  • the joint 102 is made of a metal material such as aluminum alloy or stainless steel.
  • the insertion end 110 has a cylindrical shape as a whole, and its outer diameter is adapted to the inner diameter of the insulating tube 101.
  • Two insertion grooves 111 axially adjacent to the insulating tube 101 are disposed on the insertion end 110, and the diameter of the portion of the wedge groove 111 away from the exposed end 120 is smaller than the diameter of the portion near the exposed end 120.
  • the bottom surface 1111 of the wedge-shaped groove 111 has a wedge shape with the outer end surface.
  • the outer end surface of the wedge-shaped groove 111 that is, the cylindrical surface of the wedge-shaped groove 111 having the largest diameter, that is, the cylinder in FIG.
  • the bottom surface 1111 of the wedge groove 111 is a conical surface, and may of course be a pyramid surface.
  • a space formed between the wedge-shaped recess 111 and the inner wall of the insulating tube 101 is a wedge-shaped adhesive cavity 130.
  • a stepped rib 114 is formed between the small-diameter end of the wedge-shaped recess 111 and the outer wall of the insertion end 110.
  • the surface effectively improves the stress on the joint of the plastic part, improves the tensile strength, and improves the safety performance.
  • the invention is not limited thereto, and the diameter of the portion of the wedge groove 111 away from the exposed end 120 may also be larger than the diameter of the portion near the exposed end 120.
  • the wedge-shaped recess 111 is circumferentially circumferentially disposed on the outer wall of the insertion end 110 in the axial direction of the insulating tube 101, and has a continuous annular shape, so that a continuous adhesive space can be formed.
  • the present invention is not limited thereto, and a plurality of wedge-shaped grooves 111 may be spaced apart on the outer wall of the insertion end 110 as long as the glue 131 can be accommodated.
  • the two through holes 103 are optical holes, and the two through holes 103 are respectively disposed on the insulating tube 101 corresponding to the ends of the insertion end 110, and are respectively formed with two wedge-shaped concaves.
  • the slots 111 correspond to each other, and the two through holes 103 are disposed on the same bus bar of the insulating tube 101.
  • the glue 131 is injected from one of the through holes 103 into the wedge-shaped cavities 130, and the air is discharged from the other through holes 103.
  • the two through holes 103 are disposed on the same bus bar of the insulating tube 101, the operator can conveniently and intuitively observe whether the glue 131 overflows in the other through hole 103 while injecting the glue 131, and ensure the glue.
  • the liquid 131 is sufficiently injected and the bonding is reliable.
  • the present invention is not limited thereto, and the number of the through holes 103 may be one or three or more as long as the smooth and sufficient injection of the glue 131 can be ensured.
  • the plurality of through holes 103 may also be disposed at any position on the wall of the insulating tube 101 as long as it can communicate with the wedge shaped cavities 130.
  • a cylindrical section 112 is provided between the adjacent two wedge-shaped recesses 111 to accommodate the inner diameter of the insulating tube 101.
  • the small-diameter end of the wedge-shaped recess 111 near the exposed end 120 side also forms a stepped rib 114 with the end of the cylindrical section 112.
  • the stepped rib 114 can also withstand partial tension, enhance tensile strength, and improve safety.
  • the cylindrical section 112 is provided with a flow tank 113 that communicates with the adjacent two wedge-shaped recesses 111.
  • the flow tank 113 is a rectangular groove disposed on the outer wall of the cylindrical section 112 along the axial direction of the insulating tube 101.
  • the two ends of the flow tank 113 communicate with the adjacent two wedge-shaped recesses 111, and the flow tank
  • the portion of the 113 end which is connected to the wedge groove 111 is curved, so that the glue 131 can be injected during the injection.
  • one of the wedge-shaped grooves 111 flows through the cylindrical section 112 and flows into the other wedge-shaped recess 111, so that the molten liquid 131 can be sufficiently filled into the wedge-shaped adhesive cavity 130 to ensure the bonding strength.
  • a multi-channel glue tank 113 may also be provided, and the cross-section of the glue tank 113 may also be triangular, semi-circular or the like.
  • the present invention is not limited thereto, and the diameter of the cylindrical section 112 can also be smaller than the inner diameter of the insulating tube 101, so that it is not necessary to provide the glue flow tank 113, and the glue cavity 131 can be fully filled into the wedge-shaped adhesive cavity 130 to be glued. .
  • the portion of the insertion end 110 away from the exposed end 120 is a head 115.
  • the outer wall of the head 115 is provided with a first sealing groove 116, and the first sealing groove 116 is provided with a first sealing ring 132.
  • the portion of the insertion end 110 near the exposed end 120 is a tail portion 117.
  • the outer wall of the tail portion 117 is provided with a second sealing groove 118, and the second sealing groove 118 is provided with a second sealing ring 133.
  • the first sealing groove 116 and the first sealing ring 132 can seal the wedge-shaped adhesive cavity 130 and the inner wall of the insulating tube 101 to prevent the glue 131 from leaking into the insulating tube 101, thereby causing insufficient injection of the glue 131 in the wedge-shaped adhesive cavity 130. So as to avoid affecting the bonding effect and avoid wasting glue.
  • the second sealing groove 118 and the second sealing ring 133 can seal between the wedge-shaped adhesive cavity 130 and the outside, preventing the glue 131 from leaking from the bottom of the insertion end 110 to the exposed end 120, thereby avoiding waste of the glue 131 and ensuring The surface of the insulating rod 100 is clean.
  • the first sealing groove 116 and the second sealing groove 118 are both rectangular in cross section along the axial direction of the insulating tube 101, and the first sealing ring 132 and the second sealing ring 133 are rectangular sealing rings. It is 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 first sealing groove 116 and the second sealing groove 118 along the axial direction of the insulating tube 101 may be trapezoidal, triangular or the like; the first sealing ring 132 and the second sealing ring 133 may also be O-ring seals, trapezoidal seals, special-shaped seals, etc. are used.
  • a plurality of first sealing grooves 116 and second sealing grooves 118 may be provided, and a plurality of first sealing rings 132 and second sealing rings 133 are correspondingly matched to ensure a sealing effect.
  • the outer diameter of the exposed end 120 is smaller than the outer diameter of the insulating tube 101 but larger than the inner diameter of the insulating tube 101, and the exposed end 120 is connected to the insertion end 110 to form a blocking edge 121, which is inserted at the insertion end 110.
  • the retaining edge 121 abuts against the end surface of the insulating tube 101 to form an abutting contact, so that the assembly positioning can be conveniently performed.
  • the present invention is not limited thereto, and the outer diameter of the exposed end 120 may also be smaller than the inner diameter of the insulating tube 101, and an annular protrusion may be provided as a blocking edge 121 at a position where the exposed end 120 is in contact with the end of the insulating tube 101. Or other ways to form abutment Contact for assembly positioning.
  • a vent hole 119 penetrating in the axial direction of the insulating tube 101 is disposed on the joint 102.
  • the vent hole 119 is provided to conveniently fill the inside of the insulating tube 101 with an insulating gas to ensure insulation performance.
  • the exhaust hole 119 has a circular cross section and is disposed concentrically with the insulating tube 101.
  • the cross section of the vent hole 119 may be other shapes such as a square, a triangle, a polygon, a profile, or the like, or may not be disposed concentrically with the insulating tube 101 as long as it can be realized to the inside of the insulating tube 101. Fill with insulating gas.
  • the inner wall of the end portion of the insulating tube 101 is provided with a first tapered surface 104 for facilitating the insertion of the insertion end 110.
  • the first tapered surface 104 is a conical surface, and may of course be a pyramidal surface.
  • the diameter of the portion of the first tapered surface 104 away from the exposed end 120 is smaller than the diameter of the portion near the exposed end 120.
  • the diameter of the portion of the first tapered surface 104 near the exposed end 120 is slightly larger than the outer diameter of the insertion end 110, and the first tapered surface 104 is along the insulating tube.
  • the axial length of 101 is subject to the ease of insertion.
  • the insulating tube 101 has an inner diameter equal to the inner wall 105 of the insertion portion of the insertion end 110.
  • the insulating tube 101 is formed by winding epoxy resin-impregnated glass fibers on a core mold and solidifying.
  • the core mold generally has a certain taper, and thus the inner wall of the manufactured insulating tube 101 is a cone. Since the insertion end 110 has a cylindrical shape as a whole and its outer diameter is adapted to the inner diameter of the insulating tube, if it is directly inserted into the insulating tube 101, the inner wall of the insulating tube 101 is worn, which affects the overall strength of the insulating tube 101.
  • the inner diameter of the inner wall 105 is made equal by turning or grinding, that is, the inner wall 105 is partially cylindrical, so that the insertion end 110 can be smoothly inserted into the insulating tube 101, and the overall strength of the insulating tube 101 can be ensured.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the second embodiment of the present invention is substantially the same as the first embodiment. Unlike the first embodiment, only one wedge-shaped recess 211 is provided on the insertion end 210. Two through holes 203 are respectively disposed on the two bus bars opposite to each other in the radial direction of the insulating tube 201.
  • the vent hole 219 is not provided on the joint 202, but is disposed on the outer wall of the insulating tube 201 to communicate with the outside and the inner wall of the insulating tube 201.
  • the present invention is not limited thereto, and the wedge-shaped recess 211 may not be disposed on the insertion end 210, but the wedge-shaped adhesive cavity 230 may be directly formed between the outer wall of the insertion end 210 and the inner wall of the insulating tube 201, or may be in the insulating tube.
  • a wedge groove 211 is provided in the inner wall of 201 as long as the joint 202 can be bonded to the insulating tube 201. Obviously, three or more wedges can also be placed on the insertion end 210. Shaped groove 211.
  • the through hole 203 is a threaded hole, and a blocking member (not shown) is further disposed in the through hole 203.
  • the sealing member may be a screw or a rubber stopper or the like, and a screw or a rubber plug or the like is screwed into the through hole 203, and the glue is filled with a gap between the sealing member and the through hole 203. In this way, it is possible to prevent moisture from penetrating into the wedge-shaped adhesive cavity 230 through the through hole 203, thereby causing the cured rubber to age and weaken the bonding strength.
  • the first sealing groove 216 is disposed on the inner wall of the insulating tube 201 corresponding to the head portion 215, and the first sealing ring 232 is disposed in the first sealing groove 216. of course.
  • the second sealing groove may also be disposed on the inner wall of the insulating tube 201, and details are not described herein.
  • an annular glue groove 234 is further disposed in the wedge-shaped cavity 302. In this way, more glue can be stored in the wedge-shaped adhesive cavity 230, the bonding effect is better, and the connection between the joint 202 and the insulating tube 201 is stronger.
  • the cross section of the solid groove 234 in the axial direction of the insulating tube 201 is a rectangle, and it is obvious that other shapes such as a trapezoid or a triangle may be used.
  • four solid glue grooves 234 are disposed on the inner wall of the insertion end 210, and four solid glue grooves 234 are disposed on the outer wall of the insulating tube 201 at corresponding positions in the wedge-shaped plastic cavity 230.
  • one or more glue grooves 234 may be disposed only on the outer wall of the insertion end 210 or only on the inner wall of the insulating tube 201 at a corresponding position in the wedge-shaped plastic chamber 230.
  • the glue groove 234 may be disposed in a spiral shape or the like along the axial direction of the insulating tube 201.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the third embodiment of the present invention is substantially the same as the first embodiment.
  • two wedges are disposed on the inner wall of the insulating tube 301 and the outer wall of the insertion end 310 in this embodiment.
  • Groove 311 The wedge-shaped recess 311 on the inner wall of the insulating tube 301 is disposed corresponding to the wedge-shaped recess 311 on the outer wall of the insertion end 310, and the space formed correspondingly is the wedge-shaped adhesive cavity 330.
  • the present invention is not limited thereto, and the wedge-shaped recess 311 on the inner wall of the insulating tube 301 and the wedge-shaped recess 311 on the outer wall of the insertion end 110 may also be disposed, and correspondingly, the inner wall of the insulating tube 301
  • the space formed by the wedge-shaped recess 311 and the outer wall of the insertion end 110 is a wedge-shaped adhesive cavity 330.
  • the space formed by the wedge-shaped recess 311 on the outer wall of the insertion end 110 and the inner wall of the insulating tube 301 is also a wedge-shaped adhesive cavity 330.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the fourth embodiment of the present invention is substantially the same as the first embodiment.
  • the first embodiment is different from the first embodiment.
  • the insertion end 410 is provided with a receiving cavity 440, and the insulating tube 401 is inserted into the receiving cavity 440.
  • a wedge-shaped adhesive cavity 430 is disposed between the inner wall of the receiving cavity 440 and the outer wall of the insulating tube 401.
  • the receiving cavity 440 is a circular blind hole whose inner diameter is adapted to the outer diameter of the insulating tube 401.
  • Two annular wedge-shaped recesses 411 are formed in the inner wall of the receiving cavity 440.
  • the space formed between the wedge-shaped recess 411 and the outer wall of the insulating tube 401 is a wedge-shaped adhesive cavity 430.
  • a first sealing groove 416 is disposed on the inner wall of the head 415, and a first sealing ring 432 is disposed in the first sealing groove 416.
  • a second sealing groove 418 is disposed on the inner wall of the tail portion 417, and a second sealing ring 433 is disposed in the second sealing groove 418.
  • the through hole 403 is disposed on the outer wall of the insertion end 410 and communicates with the wedge shaped cavity 430 to facilitate the injection of the glue 431.
  • the present invention is not limited thereto, and the through hole 403 may not be provided, but the glue 431 is applied to the outer wall of the insulating tube 401, and the insulating tube 401 is inserted into the receiving cavity 440 for binding.
  • a first tapered surface 404 is disposed on the outer wall of the end of the insulating tube 401 to facilitate insertion of the insulating tube 401 into the receiving cavity 440.
  • the inner diameter of the receiving cavity 440 is equal to facilitate the smooth insertion of the insulating tube 401.
  • the inner wall end of the receiving cavity 440 naturally forms a blocking edge 421 to form an abutting contact for the assembly position after the insulating tube 401 is inserted.
  • the present invention is not limited thereto, and the wedge-shaped recess 411 may be disposed on the outer wall of the insulating tube 401 or at the same time, a plurality of wedge-shaped recesses 411 are formed on the inner wall of the receiving cavity 440 and the outer wall of the insulating tube 401 to form the wedge-shaped adhesive cavity 430. .
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the fifth embodiment of the present invention is substantially the same as the first embodiment.
  • the insertion end 510 includes an inner insertion end 550 inserted into the inside of the insulating tube 501 and is insulated.
  • the outer insertion end 560 and the inner insertion end 550 are provided separately.
  • the outer insertion end 560 is a circular sleeve, and the tail portion 517 is opposite to the exposed end 520.
  • Internal threads (not shown) are provided on the inner wall of the contact, and external threads (not shown) are provided at corresponding positions on the exposed end 520.
  • the outer insertion end 560 is threadedly coupled to the exposed end 520.
  • Two annular wedge-shaped recesses 511 are defined in the inner wall of the outer insertion end 560.
  • the space formed between the wedge-shaped recess 511 and the outer wall of the insulating tube 501 is a wedge-shaped adhesive cavity 530.
  • Two annular wedge-shaped recesses 511 are disposed on the outer wall of the inner insertion end 550.
  • the space formed between the wedge-shaped recess 511 and the inner wall of the insulating tube 501 is also a wedge-shaped adhesive cavity 530.
  • a first sealing groove 516 is also disposed on the inner wall of the upper portion 515 of the outer insertion end 560, and a first sealing ring 532 is disposed in the first sealing groove 516.
  • a second sealing groove 518 is also disposed on the inner wall of the tail portion 517 of the outer insertion end 560, and a second sealing ring 533 is disposed in the second sealing groove 518.
  • a first tapered surface 504 is also provided on the outer wall of the end of the insulating tube 501 and the inner wall of the end of the outer insertion end 560 to facilitate insertion of the insulating tube 501 into the receiving cavity 540.
  • the through hole 503 is disposed on the outer wall of the outer insertion end 560 and communicates with the wedge-shaped adhesive cavity 530 between the outer insertion end 560 and the outer wall of the insulating tube 501 to facilitate the injection of the glue.
  • the insulating tube 501 can be inserted into the receiving cavity 540 after the glue is applied to the inner insertion end 550, and then the outer insertion end 560 is connected to the exposed end 520 by threads, and is glued through the through hole 503.
  • the present invention is not limited thereto, and the outer insertion end 560 and the inner insertion end 550 may also be connected by means of gluing, riveting, interference fit, and the like. Alternatively, the outer insertion end 560 and the inner insertion end 550 may be integrally provided as long as they are convenient to manufacture and assemble.

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Abstract

La présente invention concerne une barre de tirage d'isolation (100), laquelle barre comprend un tube d'isolation (101) et des joints (102) fixés aux deux extrémités du tube d'isolation (101). Chaque joint (102) comprend une extrémité d'insertion (110) en liaison d'ajustement axial avec le tube d'isolation (101) et une extrémité d'exposition (120) s'étendant hors de l'extrémité d'insertion (110). Une cavité de réception de colle en forme de coin (130) est disposée entre l'extrémité d'insertion (110) et le tube d'isolation (101). Une colle liquide (131) est versée dans la cavité de réception de colle en forme de coin (130). En fonction de la barre de tirage d'isolation (100) de l'invention, la cavité de réception de colle en forme de coin (130) est disposée entre l'extrémité d'insertion (110) et le tube d'isolation (101), la structure de cavité de réception de colle en forme de coin de la barre de tirage d'isolation (100) permet à la barre de tirage d'isolation (100) d'étendre une surface de contrainte lorsqu'elle est tirée, ce qui améliore efficacement l'état de contrainte d'une partie de liaison collée, et augmente la résistance à la traction, de telle sorte que la sécurité et la fiabilité sont atteintes.
PCT/CN2017/089674 2016-07-05 2017-06-23 Barre de tirage d'isolation WO2018006713A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610526096.4 2016-07-05
CN201610526096.4A CN105977066B (zh) 2016-07-05 2016-07-05 一种绝缘拉杆

Publications (1)

Publication Number Publication Date
WO2018006713A1 true WO2018006713A1 (fr) 2018-01-11

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PCT/CN2017/089674 WO2018006713A1 (fr) 2016-07-05 2017-06-23 Barre de tirage d'isolation

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CN (1) CN105977066B (fr)
WO (1) WO2018006713A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110254000A (zh) * 2019-07-09 2019-09-20 厦门市中豪强碳纤复合材料有限公司 一种夹芯绝缘操作杆及其制备方法
CN112420413A (zh) * 2020-10-28 2021-02-26 国网山东省电力公司昌邑市供电公司 一种辅助绝缘杆拉闸装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105977066B (zh) * 2016-07-05 2019-07-12 江苏神马电力股份有限公司 一种绝缘拉杆
CN111399101A (zh) * 2020-04-02 2020-07-10 苏州市联超光电科技有限公司 一种多波段滤光片

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