CN112735699A - Support insulator and gas insulated bus using same - Google Patents
Support insulator and gas insulated bus using same Download PDFInfo
- Publication number
- CN112735699A CN112735699A CN202011103794.6A CN202011103794A CN112735699A CN 112735699 A CN112735699 A CN 112735699A CN 202011103794 A CN202011103794 A CN 202011103794A CN 112735699 A CN112735699 A CN 112735699A
- Authority
- CN
- China
- Prior art keywords
- supporting
- conducting rod
- hole
- ball
- gland
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
- H01B17/16—Fastening of insulators to support, to conductor, or to adjoining insulator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
- H01B17/40—Cementless fittings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
Abstract
The invention relates to a supporting insulator and a gas insulated bus using the same, wherein the supporting insulator comprises a supporting body, and a conducting rod hole for inserting a conducting rod is formed in the supporting body; a contact finger groove for accommodating an elastic contact finger is arranged in the conductive rod hole; when the conducting rod is inserted into the conducting rod hole and vertically placed, the friction force between the elastic contact finger of one supporting insulator matched with the conducting rod and the conducting rod or the resultant force of the friction forces between the elastic contact fingers of more than two supporting insulators matched with the conducting rod and the conducting rod is not less than the gravity of the corresponding conducting rod; at least three mounting holes are formed in the supporting body at intervals along the circumferential direction of the supporting body, and telescopic pieces capable of moving along the radial direction of the supporting body are mounted in the mounting holes respectively; the telescopic piece is provided with an inserting part which is used for being inserted into a blind hole of a shell of the gas insulated bus and is in supporting fit with the hole wall of the blind hole; and an operating hand hole is formed in the support body and used for adjusting the position of the telescopic piece and improving the assembly efficiency.
Description
Technical Field
The present invention relates to a support insulator and a gas-insulated bus using the same.
Background
In the prior art, conducting rods in gas insulated metal enclosed switchgear (GIS) or gas insulated transmission lines (GIL) are supported and positioned in a shell through insulators to form a gas insulated bus. Specifically, when the conducting rod is vertically arranged, the insulator for supporting and positioning the conducting rod comprises an end insulator and an inner insulator, wherein the end insulator is fixed at the end of the shell, and the inner insulator is arranged inside the shell; the end part of the conducting rod is in conductive connection with a conductor on the end part insulator, the vertical support of the conducting rod is realized through the end part insulator, the inner insulator is clamped by a jackscrew spring on the conducting rod, the conducting rod is radially positioned through the inner insulator, and the end part insulator and the inner insulator are not available. When the gas insulation bus is assembled, the guide rod needs to be axially positioned through the end insulator, and then the positioning of the inner insulator in the shell is realized through the conducting rod, so that the gas insulation bus is low in assembly efficiency and high in assembly cost.
Disclosure of Invention
The invention aims to provide a supporting insulator, so that when a conducting rod is vertically arranged, the conducting rod can be limited in the radial direction and the axial direction of a shell through the supporting insulator, the assembly efficiency of a gas insulated bus is improved, and the assembly cost of the gas insulated bus is reduced; the invention also aims to provide the gas insulated bus, so that the assembly efficiency of the gas insulated bus is improved, and the assembly cost of the gas insulated bus is reduced.
The supporting insulator adopts the following technical scheme:
the supporting insulator comprises a supporting body, and a conducting rod hole for inserting a conducting rod is formed in the supporting body; a contact finger groove for accommodating an elastic contact finger is arranged in the conductive rod hole; when the conducting rod is inserted into the conducting rod hole and vertically placed, the friction force between the elastic contact finger of one supporting insulator matched with the conducting rod and the conducting rod or the resultant force of the friction forces between the elastic contact fingers of more than two supporting insulators matched with the conducting rod and the conducting rod is not less than the gravity of the corresponding conducting rod;
at least three mounting holes are formed in the supporting body at intervals along the circumferential direction of the supporting body, telescopic pieces capable of moving along the radial direction of the supporting body are mounted in the mounting holes respectively, and a radial locking mechanism is arranged between each telescopic piece and the supporting body; the telescopic piece is provided with an inserting part which is used for being inserted into a blind hole of a shell of the gas insulated bus and is in supporting fit with the hole wall of the blind hole;
and the support body is provided with an operating hand hole for adjusting the position of the telescopic piece.
The invention has the beneficial effects that: when the gas insulated bus is assembled, the conducting rod is inserted into the corresponding conducting rod hole, the elastic contact finger is assembled between the contact finger groove and the conducting rod, and meanwhile, the radial position of the telescopic piece on the support body is adjusted, so that the telescopic piece can not influence the support insulator to be installed in the shell of the gas insulated bus; then, the supporting insulator provided with the conducting rod is arranged at the inner position of the shell, and the telescopic piece is adjusted through the operating hand hole, so that the inserting part of the telescopic piece is inserted into the blind hole of the shell; then vertically placing the assembled gas insulated bus, axially positioning the support insulator in the shell along the shell through a telescopic piece, and limiting the conducting rod at an axially set position of the shell by virtue of friction force between the conducting rod and the elastic contact finger; the hole wall of the conductive rod hole limits the conductive rod at the radial set position of the shell, the supporting insulator can simultaneously realize the radial and axial limiting of the conductive rod in the shell, plays the roles of an internal insulator and an end insulator in the prior art, can meet the positioning requirement of the conductive rod only by arranging the supporting insulator in the shell, improves the assembly efficiency of the gas insulated bus, and reduces the assembly cost of the gas insulated bus.
Preferably, the telescopic member is screwed to the support body, and the radial locking mechanism is formed by or arranged separately from the telescopic member and the screw thread on the support body;
the inner end of the telescopic piece is provided with a telescopic piece adjusting structure which is used for being matched with a telescopic piece adjusting tool to screw the telescopic piece in a screwing way so that the outer end of the telescopic piece can be screwed into or out of the mounting hole on the support body.
Has the advantages that: the extensible member threaded connection is on the supporter, adjusts the position control that the structure realized the extensible member through the extensible member simultaneously, and the position control of extensible member is convenient and can realize the continuous regulation of extensible member position.
As a preferred technical scheme, the telescopic piece comprises a sleeve body;
the sleeve body is internally provided with a ball seat and a ball which is assembled on the ball seat in a rolling way;
a gland is fixed at the orifice of the outer end of the sleeve body, a ball hole for a ball to extend out of the gland is arranged on the gland, and the diameter of the orifice of the outer end of the ball hole is smaller than that of the ball so as to prevent the ball from falling off the sleeve body;
the sleeve body is internally provided with a supporting part which provides a supporting force towards the outer end of the sleeve body for the ball seat;
the inserting part is composed of a part of the ball extending out of the gland or the outer end of the sleeve body.
Has the advantages that: like this, when the support insulator who will be equipped with the conducting rod pushes away the casing, the outside ball of the telescopic sleeve body plays the effect of skidding, makes things convenient for support insulator and conducting rod to push into in the casing, simultaneously, has avoided additionally setting up the skidding structure, has further saved the assembly cost of gas-insulated generating line.
As a preferable technical scheme, the ball seat is assembled in the sleeve body in an axially moving manner along the sleeve body;
the outer part of the gland is provided with external threads which are used for being in threaded connection with the sleeve body; the gland is also provided with a gland adjusting structure which is used for matching with a gland adjusting tool to screw the gland in or out of the sleeve body.
Has the advantages that: the ball seat and the gland are adjustable in position, so that the size of the ball extending out of the outer end of the sleeve body can be adjusted as required, the supporting insulator is suitable for assembling the conducting rod in shells with different inner diameters, and the universality of the supporting insulator is improved.
Preferably, the inserting portion is formed by the outer end of the sleeve body, and the inserting portion is provided with an external thread which is used for being in threaded connection with a blind hole of a shell of the gas insulated bus.
Has the advantages that: the inserting part is in threaded connection with the shell, so that the telescopic piece is stably positioned on the shell, and the positioning stability of the conducting rod in the shell is ensured.
The gas insulated bus adopts the following technical scheme:
the gas insulated bus comprises a shell, wherein a blind hole extending along the radial direction of the shell is arranged on the shell, and an orifice of the blind hole is arranged on the inner wall of the shell;
a conductive rod is arranged in the shell;
a supporting insulator for supporting the conducting rod is further arranged in the shell; the supporting insulator comprises a supporting body, and a conducting rod hole for inserting a conducting rod is formed in the supporting body; a contact finger groove is formed in the conductive rod hole, and an elastic contact finger is arranged in the contact finger groove; when the conducting rod is inserted into the conducting rod hole and vertically placed, the friction force between the elastic contact finger of one supporting insulator matched with the conducting rod and the conducting rod or the resultant force of the friction forces between the elastic contact fingers of more than two supporting insulators matched with the conducting rod and the conducting rod is not less than the gravity of the corresponding conducting rod;
at least three mounting holes are formed in the supporting body at intervals along the circumferential direction of the supporting body, telescopic pieces capable of moving along the radial direction of the supporting body are mounted in the mounting holes respectively, and a radial locking mechanism is arranged between each telescopic piece and the supporting body; the telescopic piece is provided with an inserting part which is used for being inserted into the blind hole and is in supporting fit with the hole wall of the blind hole;
and the support body is provided with an operating hand hole for adjusting the position of the telescopic piece.
The invention has the beneficial effects that: when the gas insulated bus is assembled, the conducting rod is inserted into the corresponding conducting rod hole, the elastic contact finger is assembled between the contact finger groove and the conducting rod, and meanwhile, the radial position of the telescopic piece on the support body is adjusted, so that the telescopic piece can not influence the support insulator to be installed in the shell of the gas insulated bus; then, the supporting insulator provided with the conducting rod is arranged at the inner position of the shell, and the telescopic piece is adjusted through the operating hand hole, so that the inserting part of the telescopic piece is inserted into the blind hole of the shell; then vertically placing the assembled gas insulated bus, axially positioning the support insulator in the shell along the shell through a telescopic piece, and limiting the conducting rod at an axially set position of the shell by virtue of friction force between the conducting rod and the elastic contact finger; the hole wall of the conductive rod hole limits the conductive rod at the radial set position of the shell, the supporting insulator can simultaneously realize the radial and axial limiting of the conductive rod in the shell, plays the roles of an internal insulator and an end insulator in the prior art, can meet the positioning requirement of the conductive rod only by arranging the supporting insulator in the shell, improves the assembly efficiency of the gas insulated bus, and reduces the assembly cost of the gas insulated bus.
Preferably, the telescopic member is screwed to the support body, and the radial locking mechanism is formed by or arranged separately from the telescopic member and the screw thread on the support body;
the inner end of the telescopic piece is provided with a telescopic piece adjusting structure which is used for being matched with a telescopic piece adjusting tool to screw the telescopic piece in a screwing way so that the outer end of the telescopic piece can be screwed into or out of the mounting hole on the support body. .
Has the advantages that: the extensible member threaded connection is on the supporter, adjusts the position control that the structure realized the extensible member through the extensible member simultaneously, and the position control of extensible member is convenient and can realize the continuous regulation of extensible member position.
As a preferred technical scheme, the telescopic piece comprises a sleeve body;
the sleeve body is internally provided with a ball seat and a ball which is assembled on the ball seat in a rolling way;
a gland is fixed at the orifice of the outer end of the sleeve body, a ball hole for a ball to extend out of the gland is arranged on the gland, and the diameter of the orifice of the outer end of the ball hole is smaller than that of the ball so as to prevent the ball from falling off the sleeve body;
the sleeve body is internally provided with a supporting part which provides a supporting force towards the outer end of the sleeve body for the ball seat;
the inserting part is composed of a part of the ball extending out of the gland or the outer end of the sleeve body.
Has the advantages that: like this, when the support insulator who will be equipped with the conducting rod pushes away the casing, the outside ball of the telescopic sleeve body plays the effect of skidding, makes things convenient for support insulator and conducting rod to push into in the casing, simultaneously, has avoided additionally setting up the skidding structure, has further saved the assembly cost of gas-insulated generating line.
As a preferable technical scheme, the ball seat is assembled in the sleeve body in an axially moving manner along the sleeve body;
the outer part of the gland is provided with external threads which are used for being in threaded connection with the sleeve body; the gland is also provided with a gland adjusting structure which is used for matching with a gland adjusting tool to screw the gland in or out of the sleeve body.
Has the advantages that: the ball seat and the gland are adjustable in position, so that the size of the ball extending out of the outer end of the sleeve body can be adjusted as required, the supporting insulator is suitable for assembling the conducting rod in shells with different inner diameters, and the universality of the supporting insulator is improved.
As a preferable technical scheme, the inserting part is composed of the outer end of the sleeve body, and the inserting part is in threaded connection with the blind hole.
Has the advantages that: the inserting part is in threaded connection with the shell, so that the telescopic piece is stably positioned on the shell, and the positioning stability of the conducting rod in the shell is ensured.
Drawings
Fig. 1 is a perspective view of a support insulator embodiment 1 of the present invention;
fig. 2 is a front view of an embodiment 1 of the support insulator of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
fig. 4 is a bottom view of a support insulator embodiment 1 of the present invention;
FIG. 5 is a sectional view taken along line B-B of FIG. 4;
FIG. 6 is a perspective view of the caster of FIG. 1;
FIG. 7 is a front view of the caster of FIG. 1;
FIG. 8 is a cross-sectional view taken along line C-C of FIG. 7;
FIG. 9 is a front view of the insulator of FIG. 1;
FIG. 10 is a cross-sectional view taken along line D-D of FIG. 9;
FIG. 11 is a perspective view of the metal ring of FIG. 1;
FIG. 12 is a perspective view of an embodiment of a gas-insulated bus bar of the present invention (elastic fingers not shown);
FIG. 13 is a front view of an embodiment of a gas-insulated bus bar of the present invention;
FIG. 14 is a cross-sectional view taken along line E-E of FIG. 13;
FIG. 15 is an enlarged view of a portion of FIG. 14 at G;
FIG. 16 is a sectional view taken along line F-F of FIG. 13;
fig. 17 is a partial enlarged view of fig. 16 at H.
In the figure: 1-a ball; 2-pressing the cover; 3-a support tile; 4-a ball bearing; 5-a pressure spring; 6-pressure spring seat; 7-a regulating hole; 8-the sleeve body; 9-a cylinder body; 10-a support; 11-a conductive rod; 12-fixing blocks; 13-a metal ring; 14-an insulator; 15-copper bar; 21-an enclosure wall; 22-flanging; 71-polygonal segments; 72-inserting section; 81-large pore size section; 82-small pore diameter section; 83-step surface; 91-flange plate; 100-universal wheels; 101-a threaded hole; 102-handle hole; 103-conductive rod hole; 104-a center conductor; 105-finger groove; 106-blind hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
as shown in fig. 1 to 5, the supporting insulator includes a supporting body 10, the supporting body 10 in this embodiment includes an insulator 14 shown in fig. 9 and 10, and a metal ring 13 shown in fig. 11, the metal ring 13 is specifically an aluminum ring, and the metal ring 13 is embedded on the outer periphery of the insulator 14. The metal ring 13 is provided with a screw hole 101, and the screw hole 101 constitutes a mounting hole of the support body 10 in the present embodiment.
A central conductor 104 is embedded in the insulator 14, a conducting rod hole 103 is arranged in the middle of the central conductor 104, a conducting rod of a gas insulated bus is inserted into the conducting rod hole, and a finger contact groove 105 is arranged on the central conductor 14 and used for accommodating a spring finger. The insulator 14 is further provided with an operating hand hole 102, and the threaded hole 101 communicates with the operating hand hole 102 when the metal ring 13 is fitted on the insulator 14.
The insulator 14 is formed by casting epoxy resin, when the support 10 is manufactured, the central conductor 104 and the metal ring 13 are fixed at a set position, then the epoxy resin is cast in the metal ring 13, the insulator 14 is formed after the epoxy resin is solidified, the metal ring 13 is embedded and fixed on the insulator 14, and the central conductor 104 is embedded in the insulator 14.
The support insulator further comprises a universal wheel 100, the universal wheel 100 constituting a telescopic member in this embodiment. As shown in fig. 6 to 8, the universal wheel 100 includes a sleeve body 8, in this embodiment, an inner hole of the sleeve body 8 is a stepped hole having a large-diameter section 81 and a small-diameter section 82, and an outer diameter of the large-diameter section 81 is larger than an outer diameter of the small-diameter section 82. With the end of the sheath 8 for connecting with the support 10 as the inner end and the end of the shell for being close to the outside of the conducting rod as the outer end, the large-diameter section 81 is disposed close to the outer end of the sheath 8, and the small-diameter section 82 is disposed close to the inner end of the sheath 8. The outer peripheral surface of the large-aperture section 81 is provided with a first external thread (not shown in the figure) for being in threaded connection with a blind hole of a shell of the gas insulated bus, and the part of the sleeve body 8 provided with the first external thread forms an inserting part in the embodiment; the outer periphery of the small-diameter section 82 is provided with a second external thread, the second external thread is in threaded connection with the threaded hole 101 of the support body 10, and the second external thread and the thread of the threaded hole 101 simultaneously form a radial locking mechanism in the embodiment.
As shown in fig. 8, the universal wheel 100 further includes a circular arc-shaped supporting shoe 3, the supporting shoe 3 is axially movably assembled inside the sleeve body 8 along the sleeve body 8, a plurality of balls 4 (only one ball is shown in fig. 4) are arranged inside the supporting shoe 3 along the circumferential direction of the supporting shoe, the supporting shoe 3 is assembled with the ball 1 through the rolling of the balls 4, and the friction between the ball 1 and the supporting shoe 3 can be reduced through the balls 4. The support shoe 3 forms together with the balls 4 a ball seat in this embodiment. In order to prevent the balls 4 from being separated from the supporting tile 3, two circumferential ends of the supporting tile 3 are respectively provided with flanges 22 facing the axis of the sleeve body 8, and the width of each flange 22 is smaller than the diameter of each ball 4, so that the flanges 22 can limit the balls 4 and cannot rub against the balls 1.
As shown in fig. 8, the universal wheel 100 further includes a gland 2, the gland 2 in this embodiment is screwed to the outer end opening of the sleeve body 8, the gland 2 is provided with a ball hole, the ball 1 is exposed outside the gland 2, and the diameter of an opening formed at the outer end surface of the gland 2 by the ball hole is smaller than that of the ball 1, so as to prevent the ball 1 from falling off the sleeve body 8.
The outer end face of the gland 2 is also provided with a gland adjusting structure, the gland adjusting structure in the embodiment is two connecting holes (not shown in the figure) arranged along the radial direction of the gland 2 at intervals, when the gland adjusting tool is used, the gland adjusting tool is inserted into the two connecting holes, and meanwhile, force along the circumferential direction of the sleeve body 8 is applied to the two connecting holes so as to rotate the gland 2, so that the position adjustment of the gland 2 in the axial direction of the sleeve body 8 is realized. The gland adjusting tool in the embodiment can be composed of two rod bodies, when the gland adjusting tool is used, the two rod bodies are respectively inserted into the connecting holes, in order to prevent the rod bodies from rotating in the connecting holes, the connecting holes can be set to be polygonal holes, and meanwhile, polygonal structures matched with the polygonal holes are arranged on the rod bodies.
As shown in fig. 8, a pressure spring seat 6 is assembled in the sleeve body 8, specifically, an external thread is arranged outside the pressure spring seat 6, the pressure spring seat 6 is connected inside the sleeve body 8 in a threaded manner, a pressure spring 5 is assembled between the pressure spring seat 6 and the supporting tile 3 in a pressing manner, an elastic supporting force towards the outer end of the sleeve body 8 is provided for the supporting tile 3 through the pressure spring 5, and the pressure spring 5 constitutes the supporting portion in the present embodiment. The small-bore section 82 of the sleeve body 8 can play a role in radially positioning the pressure spring 5.
As shown in fig. 8, the inner side of the gland 2 is provided with a surrounding wall 21 for guiding the reciprocating movement of the ball seat, and the surrounding wall 21 is used for being in limited fit with the support tile 3 along the radial direction of the sleeve body 8 so as to guide the reciprocating movement of the ball seat.
As shown in fig. 8, in the present embodiment, the inner end of the sheath body 8 is provided with an adjusting hole 7 communicated with the inner hole, the adjusting hole 7 comprises a polygonal hole section 71 with a polygonal cross section and an insertion section 72, the polygonal hole section 71 is arranged far away from the outer end of the sheath body 8, and the insertion section 72 is arranged near the outer end of the sheath body 8. The polygonal hole section 71 in this embodiment is a regular hexagonal hole section, and is adapted to the telescopic member adjusting tool, so that the sleeve body 8 is screwed by the telescopic member adjusting tool to realize the position adjustment of the sleeve body 8 in the radial direction of the support body 10, and the polygonal section constitutes the telescopic member adjusting structure in this embodiment. Specifically, the telescopic member adjusting tool can be an outer hexagonal wrench and other adjusting rods with outer hexagonal structures.
One end of the pressure spring seat 6, which is far away from the gland 2, is provided with a pressure spring seat adjusting structure for matching with a pressure spring seat adjusting tool to realize the axial position adjustment of the pressure spring seat 6 on the sleeve body 8. Specifically, the pressure spring seat adjusting structure is a hexagonal hole (not shown in the figure) formed in the inner end face of the pressure spring seat, and the pressure spring seat adjusting tool is an external hexagonal wrench matched with the hexagonal hole. The polygonal hole section 71 and the insertion section 72 form an adjusting hole for the external hexagonal wrench to extend into the sleeve body 8.
The insertion section 72 is a circular hole section, and the diameter of the insertion section 72 is smaller than the diameter of the small-hole section 82 of the sleeve body 8, so that the part of the sleeve body 8 provided with the insertion section 72 can stop the pressure spring seat 6, and the pressure spring 5 is prevented from ejecting the pressure spring seat 6 out of the sleeve body 8 along the direction towards the inner part of the sleeve body 8 under unexpected conditions.
In addition, when the inner diameter of the shell changes, the length of the ball 1 extending out of the outer end face of the sleeve body 8 needs to be adjusted, at this time, the pressure spring seat 6 can be screwed into the bottom of the small-bore section of the sleeve body 8 to enable the pressure spring 5 to be in a loose state, and then the position of the gland 2 is adjusted to enable the ball 1 to be in a proper working state. When the position of the gland 2 is adjusted, the pressure spring 5 is in a loose state by adjusting the pressure spring seat 6, which is beneficial to adjusting the position of the gland 2.
As shown in fig. 1, 2 and 5, three conductive rod holes 103 are uniformly distributed along the circumference of the support body 10 at intervals in the present embodiment for inserting three-phase conductive rods; three threaded holes 101 are uniformly distributed along the periphery of the axis of the support body 10 at intervals, and the universal wheels 100 are connected to the threaded holes 101.
The specific assembly process of the universal wheel comprises the following steps:
during installation, the pressure spring seat 6 is screwed into the sleeve body 8, then the pressure spring 5, the support tile 3, the ball 4 and the ball 1 are sequentially arranged, finally the gland 2 is screwed on the sleeve body 8, and the primary installation of the universal wheel is finished; then, the installed universal wheel is installed into the support body 10 to form the support insulator shown in fig. 1 to 5, and an operation hand hole 102 is reserved on the support insulator for placing an expansion piece adjusting tool and a pressure spring seat adjusting tool to adjust the sleeve body 8 and the pressure spring seat 6.
As shown in fig. 12 to 17, the gas insulated bus includes a housing, the housing includes a cylinder and a fixing block 12 welded and fixed outside the cylinder, the housing is provided with a blind hole 106 penetrating through the cylinder and extending along the radial direction of the cylinder, and the blind hole in this embodiment is an internal threaded hole.
Before the support insulator is installed in the shell, a pressure spring seat adjusting tool is used for adjusting a pressure spring seat 6, so that a pressure spring 5 starts to be loosened; then the gland 2 is rotated, the gland 2 presses the ball 1, the ball 1 drives the ball 4 and the supporting tile 3 to retract into the inner hole of the sleeve body 8, when the supporting tile 3 contacts a step surface 83 between a large-hole-diameter section 81 and a lower-hole-diameter section of the sleeve body 8, the supporting tile cannot be screwed inwards continuously, the outer end surface of the gland 2 is positioned on the inner side of the outer end surface of the sleeve body 8, at the moment, most of the ball 1 enters the large-hole-diameter section 81 of the sleeve body 8, and a small part of the ball 1 extends out of the; then, inserting the three conducting rods 11 on the supporting insulator, placing the spring contact fingers in the contact finger grooves 105, pushing the supporting insulator provided with the conducting rods 11 into the shell to be arranged at a preset position, and enabling the universal wheel 100 to play a role in skidding by the part of the ball 1 extending out of the sleeve body 8 in the process; then, the sleeve body 8 is adjusted by using the telescopic member adjusting tool, so that the universal wheel 100 starts to be screwed out from the support body 10, the first external thread of the sleeve body 8 is in threaded connection with the blind hole 106, the stable connection between the support insulator and the shell is ensured, and at the moment, the rotation of the ball 1 is meaningless.
The supporting insulator is in a locking state on the shell, the conducting rod hole 103 on the supporting insulator can radially position the conducting rod 11, meanwhile, a spring contact finger (not shown in the figure) is arranged in the contact finger groove 105, the spring contact finger radially pushes the conducting rod 11 along the supporting insulator, so that the friction force along the radial direction of the conducting rod 11 is formed between the spring contact finger of the supporting insulator and the conducting rod 11, and the friction force is not less than the gravity of the corresponding conducting rod, so that the supporting insulator plays a role in axial limiting of the conducting rod 11.
When the support insulator is fixed in the housing, the step surface 83 between the large-bore section 81 and the lower-bore section of the sleeve 8 and the press cover 2 limit the ball 1 and the support shoe 3 together, so that the ball 1 is stably held at a set position. Most of the ball 1 is retracted into the sleeve body 8, and a small part of the ball extends out of the sleeve body 8, so that the universal wheel 100 is ensured to play a role in skidding, and the ball 1 is prevented from extending out of the sleeve body 8 to too much outside dimension to influence the depth of the sleeve body 8 screwed into the blind hole 106.
When the pressure spring seat 6 and the sleeve body 8 need to be adjusted, the operation hand hole 102 is used as an operation window, and the operation hand hole 102 can also be used as a clamping part for clamping a hand or a tool when the supporting insulator is carried; the bus can be a GIS bus and also can be a GIL power transmission line.
it differs from the above example 1 mainly in that: in the embodiment 1, the sleeve body is provided with the second external thread for adjusting the position of the universal wheel. In this embodiment, the sleeve body is not provided with the second external thread, the mounting hole is a unthreaded hole, the sleeve body can be provided with a push-pull structure extending into the operating handle hole, the hole wall of the mounting hole is provided with a plurality of threaded holes, each threaded hole extends along the radial direction of the mounting hole and is axially arranged along the mounting hole at intervals, when the position of the universal wheel needs to be adjusted, the universal wheel is manually pushed and pulled to a proper position, then the screw is connected in the corresponding threaded hole, the screw is stopped on the inner end face of the universal wheel to limit the inner end of the universal wheel, the outer end of the universal wheel is limited by the hole bottom of the blind hole, and the radial locking mechanism at the moment is composed of the hole bottom of the blind hole, the threaded hole and the screw connected in.
it differs from the above example 1 mainly in that: the telescopic member in the above embodiment 1 is a universal wheel. In this embodiment, the extensible member is only formed by a rod body telescopically assembled in the mounting hole, and the rod body is provided with a first external thread and a second external thread from outside to inside, the first external thread is used for being connected with the blind hole, and the second external thread is used for being connected with the support body through a thread.
it differs from the above example 1 mainly in that: in the embodiment 1, the balls are arranged between the supporting tiles, and the friction force between the balls and the supporting tiles is reduced. In the embodiment, no rolling ball is arranged between the support tile and the ball, and the surface of the support tile matched with the ball meets certain roughness requirement.
it differs from the above example 1 mainly in that: in the embodiment 1, the sleeve body is internally provided with the pressure spring seat, and the pressure spring is assembled between the pressure spring seat and the ball seat in a pressing mode. In the embodiment, the pressure spring is directly assembled between the hole bottom of the inner hole of the sleeve body and the ball seat in a jacking way, and the pressure spring seat is not arranged; the ball seat can be directly fixed inside the sleeve body without the pressure spring and the pressure spring seat, and the joint between the sleeve body and the ball seat provides the jacking pressure towards the outside of the sleeve body for the ball seat, for example, the ball seat is in threaded connection inside the sleeve body, and the threaded structure provides the jacking pressure towards the outside of the sleeve body for the ball seat at the moment.
it differs from the above example 1 mainly in that: the insertion portion in example 1 was constituted by the outer end of the sheath body. The insertion portion in this embodiment is constituted by a portion of the ball protruding outside the sleeve.
Embodiment 7 of the supporting insulator of the present invention:
it differs from the above example 1 mainly in that: in the embodiment 1, the ball seat and the gland are both in threaded connection in the sleeve body. In the embodiment, the ball seat is fixed in the sleeve body through riveting or welding, the gland is also fixed on the sleeve body through riveting or welding, and the positions of the ball seat and the gland are not adjustable.
it differs from the above example 1 mainly in that: in the above embodiment 1, the blind hole is an internally threaded hole. In this embodiment, the blind hole is a smooth hole, and at this time, the outer peripheral surface of the large-aperture section is a smooth surface adapted to the smooth hole without arranging a first external thread.
In the embodiment of the gas insulated bus bar according to the present invention, as shown in fig. 12 to 17, the gas insulated bus bar includes a housing, and the housing is provided with a blind hole 106 extending along a radial direction of the housing. Specifically, the casing includes barrel 9, and the barrel 9 outside is fixed with the fixed block 12 with universal ball 100 one-to-one, and blind hole 106 link up the barrel and extend to inside the fixed block 12. The shell in this embodiment is formed by butting two sections of cylinders 9, the two cylinders 9 are butted through a flange 91, connecting holes are formed in fixing blocks 12 of the two cylinders 9, and the two cylinders 9 are in conductive connection through copper bars 15.
The shell is internally provided with a conducting rod and supporting insulators for supporting the conducting rod, and each cylinder 9 is internally provided with one supporting insulator.
The support insulator is in the dead lock state on the casing, conducting rod hole 103 on the support insulator can carry out radial positioning to conducting rod 11, the spring touches and indicates along the radial roof pressure conducting rod 11 of support insulator simultaneously, make the spring of support insulator touch and have between the conducting rod 11 along the axial frictional force of conducting rod 11, and this frictional force is not less than the gravity of the conducting rod that corresponds, make the support insulator play to the spacing effect of conducting rod 11 axial, only need set up the positioning requirement that the support insulator can satisfy conducting rod 11 in the casing inside, the assembly efficiency of gas-insulated bus has been improved, the assembly cost of gas-insulated bus has been reduced. In addition, an end insulator fixed at the end of the conducting rod 11 and used for supporting the conducting rod 11 is omitted, the using amount of the insulator is reduced, and the cost of the gas insulated bus is further saved.
The gas insulated bus can be a GIS bus and also can be a GIL power transmission line.
In other embodiments, the supporting insulator may be the supporting insulator described in any of embodiments 2 to 8 of the supporting insulator; the shell can only comprise a cylinder body, the orifice of the blind hole is arranged in the cylinder body, and the hole bottom of the blind hole is positioned on the cylinder wall of the cylinder body; more than two supporting insulators can be arranged in each cylinder, spring contact fingers are arranged in the conducting rod holes of the supporting insulators, when the conducting rods are vertically placed, the resultant force of friction force between the spring contact fingers of the supporting joint edges and the conducting rods is larger than or equal to the gravity of the corresponding conducting rods, and radial and axial positioning of the conducting rods is achieved through the combined action of the supporting insulators fixed in the shell.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. The supporting insulator is characterized by comprising a supporting body, wherein a conducting rod hole for inserting a conducting rod is formed in the supporting body; a contact finger groove for accommodating an elastic contact finger is arranged in the conductive rod hole; when the conducting rod is inserted into the conducting rod hole and vertically placed, the friction force between the elastic contact finger of one supporting insulator matched with the conducting rod and the conducting rod or the resultant force of the friction forces between the elastic contact fingers of more than two supporting insulators matched with the conducting rod and the conducting rod is not less than the gravity of the corresponding conducting rod;
at least three mounting holes are formed in the supporting body at intervals along the circumferential direction of the supporting body, telescopic pieces capable of moving along the radial direction of the supporting body are mounted in the mounting holes respectively, and a radial locking mechanism is arranged between each telescopic piece and the supporting body; the telescopic piece is provided with an inserting part which is used for being inserted into a blind hole of a shell of the gas insulated bus and is in supporting fit with the hole wall of the blind hole;
and the support body is provided with an operating hand hole for adjusting the position of the telescopic piece.
2. A support insulator according to claim 1, characterised in that the telescopic member is screwed onto the support body, and the radial locking means are constituted by or otherwise arranged by the telescopic member and the screw thread on the support body;
the inner end of the telescopic piece is provided with a telescopic piece adjusting structure which is used for being matched with a telescopic piece adjusting tool to screw the telescopic piece in a screwing way so that the outer end of the telescopic piece can be screwed into or out of the mounting hole on the support body.
3. A supporting insulator according to claim 1 or 2, characterised in that the telescopic element comprises a sheath;
the sleeve body is internally provided with a ball seat and a ball which is assembled on the ball seat in a rolling way;
a gland is fixed at the orifice of the outer end of the sleeve body, a ball hole for a ball to extend out of the gland is arranged on the gland, and the diameter of the orifice of the outer end of the ball hole is smaller than that of the ball so as to prevent the ball from falling off the sleeve body;
the sleeve body is internally provided with a supporting part which provides a supporting force towards the outer end of the sleeve body for the ball seat;
the inserting part is composed of a part of the ball extending out of the gland or the outer end of the sleeve body.
4. The support insulator of claim 3, wherein the ball seat is movably mounted in the housing in an axial direction of the housing;
the outer part of the gland is provided with external threads which are used for being in threaded connection with the sleeve body; the gland is also provided with a gland adjusting structure which is used for matching with a gland adjusting tool to screw the gland in or out of the sleeve body.
5. A supporting insulator according to claim 3, characterised in that the insertion portion is formed by the outer end of the sheath, said insertion portion being provided with an external thread for threaded connection with a blind hole of the housing of the gas-insulated bus-bar.
6. The gas insulated bus is characterized by comprising a shell, wherein the shell is provided with a blind hole extending along the radial direction of the shell, and an orifice of the blind hole is arranged on the inner wall of the shell;
a conductive rod is arranged in the shell;
a supporting insulator for supporting the conducting rod is further arranged in the shell; the supporting insulator comprises a supporting body, and a conducting rod hole for inserting a conducting rod is formed in the supporting body; a contact finger groove is formed in the conductive rod hole, and an elastic contact finger is arranged in the contact finger groove; when the conducting rod is inserted into the conducting rod hole and vertically placed, the friction force between the elastic contact finger of one supporting insulator matched with the conducting rod and the conducting rod or the resultant force of the friction forces between the elastic contact fingers of more than two supporting insulators matched with the conducting rod and the conducting rod is not less than the gravity of the corresponding conducting rod;
at least three mounting holes are formed in the supporting body at intervals along the circumferential direction of the supporting body, telescopic pieces capable of moving along the radial direction of the supporting body are mounted in the mounting holes respectively, and a radial locking mechanism is arranged between each telescopic piece and the supporting body; the telescopic piece is provided with an inserting part which is used for being inserted into the blind hole and is in supporting fit with the hole wall of the blind hole;
and the support body is provided with an operating hand hole for adjusting the position of the telescopic piece.
7. The gas insulated bus bar of claim 6 wherein the expansion member is threaded onto the support body and the radial lock mechanism is comprised of or otherwise configured with the expansion member and the threads on the support body;
the inner end of the telescopic piece is provided with a telescopic piece adjusting structure which is used for being matched with a telescopic piece adjusting tool to screw the telescopic piece in a screwing way so that the outer end of the telescopic piece can be screwed into or out of the mounting hole on the support body.
8. The gas-insulated busbar of claim 6 or 7, wherein said expansion element comprises a sheath;
the sleeve body is internally provided with a ball seat and a ball which is assembled on the ball seat in a rolling way;
a gland is fixed at the orifice of the outer end of the sleeve body, a ball hole for a ball to extend out of the gland is arranged on the gland, and the diameter of the orifice of the outer end of the ball hole is smaller than that of the ball so as to prevent the ball from falling off the sleeve body;
the sleeve body is internally provided with a supporting part which provides a supporting force towards the outer end of the sleeve body for the ball seat;
the inserting part is composed of a part of the ball extending out of the gland or the outer end of the sleeve body.
9. The gas insulated bus bar of claim 8, wherein the ball seat is axially movably mounted in the housing;
the outer part of the gland is provided with external threads which are used for being in threaded connection with the sleeve body; the gland is also provided with a gland adjusting structure which is used for matching with a gland adjusting tool to screw the gland in or out of the sleeve body.
10. The gas-insulated bus bar of claim 8, wherein the insertion portion is formed by an outer end of the sheath, and the insertion portion is threadedly coupled to the blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011103794.6A CN112735699B (en) | 2020-10-15 | 2020-10-15 | Support insulator and gas-insulated bus using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011103794.6A CN112735699B (en) | 2020-10-15 | 2020-10-15 | Support insulator and gas-insulated bus using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112735699A true CN112735699A (en) | 2021-04-30 |
| CN112735699B CN112735699B (en) | 2023-05-16 |
Family
ID=75597259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011103794.6A Active CN112735699B (en) | 2020-10-15 | 2020-10-15 | Support insulator and gas-insulated bus using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112735699B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1266501A (en) * | 1968-04-05 | 1972-03-08 | ||
| US20140148032A1 (en) * | 2012-11-26 | 2014-05-29 | Coninvers Gmbh | Electrical connector having an insulating body that is locked in place on the plug side and can be released by a tool |
| CN104143801A (en) * | 2013-09-26 | 2014-11-12 | 国家电网公司 | Conducting rod supporting structure and pipeline bus using same |
| CN204103350U (en) * | 2014-08-28 | 2015-01-14 | 重庆吉能电气(集团）有限公司 | A kind of extra high voltage network straight line units assembling abutted flange |
| CN205384910U (en) * | 2015-12-21 | 2016-07-13 | 平高集团有限公司 | Three pillar insulators are used to gas -insulated generating line |
| CN107403670A (en) * | 2017-07-24 | 2017-11-28 | 许继集团有限公司 | A kind of post insulator sub-component and GIL systems |
| CN208208437U (en) * | 2018-04-19 | 2018-12-07 | Abb瑞士股份有限公司 | Supporting insulator and gas-insulated transmission line |
| CN211456618U (en) * | 2020-01-20 | 2020-09-08 | Abb 瑞士股份有限公司 | GIL with three-post insulator |
-
2020
- 2020-10-15 CN CN202011103794.6A patent/CN112735699B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1266501A (en) * | 1968-04-05 | 1972-03-08 | ||
| US20140148032A1 (en) * | 2012-11-26 | 2014-05-29 | Coninvers Gmbh | Electrical connector having an insulating body that is locked in place on the plug side and can be released by a tool |
| CN104143801A (en) * | 2013-09-26 | 2014-11-12 | 国家电网公司 | Conducting rod supporting structure and pipeline bus using same |
| CN204103350U (en) * | 2014-08-28 | 2015-01-14 | 重庆吉能电气(集团）有限公司 | A kind of extra high voltage network straight line units assembling abutted flange |
| CN205384910U (en) * | 2015-12-21 | 2016-07-13 | 平高集团有限公司 | Three pillar insulators are used to gas -insulated generating line |
| CN107403670A (en) * | 2017-07-24 | 2017-11-28 | 许继集团有限公司 | A kind of post insulator sub-component and GIL systems |
| CN208208437U (en) * | 2018-04-19 | 2018-12-07 | Abb瑞士股份有限公司 | Supporting insulator and gas-insulated transmission line |
| CN211456618U (en) * | 2020-01-20 | 2020-09-08 | Abb 瑞士股份有限公司 | GIL with three-post insulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112735699B (en) | 2023-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205384910U (en) | Three pillar insulators are used to gas -insulated generating line | |
| CN107403670A (en) | A kind of post insulator sub-component and GIL systems | |
| CN107039919A (en) | A kind of wire-binding device | |
| CN102800460A (en) | Transformer bushing assembly, transformer bushing mounting tool and transformer bushing mounting method | |
| CN112735699A (en) | Support insulator and gas insulated bus using same | |
| CN210068697U (en) | Quick connecting structure of assembling device | |
| CN112397261B (en) | Universal wheel for supporting insulator and supporting insulator | |
| CN112108822B (en) | Fixing device for welding vacuum switch tube | |
| CN209805340U (en) | pre-buried fixing device of electrical installation engineering electronic box | |
| CN213602296U (en) | Positioning device for emergency repair of power distribution network | |
| EP2842198B1 (en) | Tool for installation and/or removal of connector of gas-insulated switchgear termination | |
| DE2916923C2 (en) | ||
| CN219875017U (en) | Electric power fitting capable of preventing cable from loosening | |
| CN220543678U (en) | 160KN suspension cylindrical head porcelain insulator | |
| CN218847382U (en) | Fly ash is supporting mechanism for electronic scale | |
| CN209948643U (en) | Anti-drop bus connector and cable connector of solid insulation pole | |
| CN212510371U (en) | Block terminal coupling assembling | |
| CN211088093U (en) | Insulating operating rod | |
| CN211699854U (en) | Novel suspension porcelain insulator with head structure | |
| CN218648307U (en) | Cable crimping pliers | |
| CN220770344U (en) | Use stable pipe strap | |
| CN210751309U (en) | Steel pipe dance performance device | |
| CN214827902U (en) | Wire arranging driving mechanism of enamelling machine | |
| CN220543688U (en) | Insulating sheath | |
| CN218217026U (en) | Device for fixing encoder on motor rotating shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |