CN114465150B - Three-phase common-box insulator assembly and GIS - Google Patents
Three-phase common-box insulator assembly and GIS Download PDFInfo
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- CN114465150B CN114465150B CN202111547909.5A CN202111547909A CN114465150B CN 114465150 B CN114465150 B CN 114465150B CN 202111547909 A CN202111547909 A CN 202111547909A CN 114465150 B CN114465150 B CN 114465150B
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- 239000012212 insulator Substances 0.000 title claims abstract description 98
- 241000208199 Buxus sempervirens Species 0.000 title claims abstract description 67
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- 230000002093 peripheral effect Effects 0.000 claims description 21
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 12
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- 238000012544 monitoring process Methods 0.000 description 13
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- 230000005684 electric field Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
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- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0358—Connections to in or out conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0352—Gas-insulated switchgear for three phase switchgear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0356—Mounting of monitoring devices, e.g. current transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/065—Means for detecting or reacting to mechanical or electrical defects
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
Abstract
The invention relates to a three-phase common-box insulator assembly and a GIS. The three-phase common-box insulator assembly comprises three-phase center inserts, flanges and insulating parts, wherein the three-phase center inserts are distributed in a 'delta' shape, the insulating parts are arranged between the center inserts and the flanges, electrodes are uniformly cast in the insulating parts corresponding to the center inserts, the electrodes are correspondingly arranged with the corresponding center inserts along the radial direction, each electrode comprises an arc-shaped part corresponding to the center insert and extending along the circumferential direction of the insulating part, each electrode further comprises a connecting part, each connecting part is positioned on one side of each arc-shaped part, which is opposite to the center insert, and each connecting part is correspondingly provided with a radial through hole; the connecting part is used for being connected with the electrified display wiring body penetrating into the radial through hole when the electrified state is monitored so as to enable the electrode to be communicated with the electrified display device; the connecting part is also used for being connected with a grounding piece penetrating into the radial through hole when the grounding shield is grounded, and the flange is provided with a grounding piece connecting part used for being connected with the grounding piece.
Description
Technical Field
The invention relates to a three-phase common-box insulator assembly and a GIS, in particular to an embedded electrode in an insulator.
Background
In the prior art, in order to accurately respond to the electrification condition of a main loop in a GIS, an electrification display device is adopted for detection. The live display device performs induction type test outside the safety distance by utilizing the electric field coupling between the high-voltage electric field and the sensor, outputs a locking signal, performs forced locking on an operating mechanism and the like, prevents misoperation, and plays an important role in guaranteeing personal safety and equipment safety.
At present, a live display probe for a GIS is usually installed on a cover plate to detect the live condition of a product, specifically, a pulling opening is formed in a barrel of the GIS, and the cover plate is installed. There are also few manufacturers that open a detection hole in a bus-basin-type insulator, and assemble an electrified display electrode (in the shape of a ball head) in the detection hole to detect an electrified display signal, for example, an insulator assembly disclosed in chinese literature with application publication No. CN112712942a and a high-voltage switchgear using the same are to embed the ball head-shaped electrified display electrode in the insulator.
The problem in the prior art is that the surface area of the ball-shaped charged display electrode, which is opposite to the central conductor, is small, and the charged signal of the bus conductor is difficult to detect, so that the accuracy of detecting the charged signal is poor.
In order to solve the problem of the ball-head-shaped electrified display electrode, an arc-shaped net-shaped induction electrode is directly poured into the three-wire common-box insulator in the embedded high-voltage electrified display device disclosed in Chinese patent document with the authority publication number of CN202453418U, and three-phase induction electrodes are respectively poured near three-phase conductors.
However, in the case of a three-phase common box insulator, an annular ground shield ring is generally embedded in an insulating portion between a three-phase conductor arranged in a "delta" shape and a flange, so as to reduce the electric field intensity at the flange and reduce the partial discharge of the insulator. However, after the live display electrode is cast in the insulator, the grounding shielding ring cannot be normally installed. However, when the three-phase common-box insulator with the live display electrode is adopted for the insulator which does not need to be subjected to live display monitoring, the electric field intensity at the flange is large due to the fact that the grounding shielding ring cannot be installed, the partial discharge phenomenon of the insulator is serious, and the service life of the insulator is shortened. In order to meet different use conditions, two three-phase common-box insulators are required to be provided, so that the universality is poor, and the design and processing cost is high.
Disclosure of Invention
The invention aims to provide a three-phase common-box insulator assembly, which aims to solve the technical problem that in the prior art, two three-phase common-box insulators are required to be equipped for meeting different use conditions, so that the design and processing cost is high. The invention aims to provide a GIS.
In order to achieve the above purpose, the technical scheme of the three-phase common-box insulator assembly is as follows:
the three-phase common box insulator assembly comprises a three-phase common box insulator, wherein the three-phase common box insulator comprises three-phase center inserts, flanges and insulating parts, the three-phase center inserts are arranged in a 'delta' shape, the insulating parts are arranged between the center inserts and the flanges, electrodes are uniformly and integrally cast in the insulating parts corresponding to the center inserts, the electrodes are correspondingly arranged with the corresponding center inserts along the radial direction, each electrode comprises an arc-shaped part which corresponds to the center insert and extends along the circumferential direction of the insulating part, the three-phase common box insulator also comprises a connecting part, the connecting part is positioned on one side of the arc-shaped part, which is opposite to the center insert, and radial through holes are formed in the flanges corresponding to the connecting parts; the connecting part is used for being connected with the electrified display wiring body penetrating into the radial through hole when the electrified state is monitored so as to enable the electrode to be communicated with the electrified display device; the connecting part is also used for being connected with a grounding piece penetrating into the radial through hole when the grounding shield is grounded, and the flange is provided with a grounding piece connecting part used for being connected with the grounding piece.
The beneficial effects are that: in the three-phase common-box insulator assembly, the electrode is poured at the position corresponding to the three-phase center insert in the insulating part, and the arc-shaped part of the electrode corresponds to the center insert and extends along the circumferential direction of the insulating part, so that the area of the arc-shaped part opposite to the center conductor is larger, and the electrode can acquire the electrified signal of the center conductor more accurately and sensitively. When the three-phase common-box insulator assembly is used for monitoring the electrification condition, the connecting part of the electrode is communicated with the electrification display device through the electrification display wiring body, and the electrification display device monitors the electrification condition of the central conductor of the GIS; when three-phase is the case insulator subassembly altogether and is not used for monitoring electrified situation, the connecting portion of electrode is connected with the flange through the grounding piece for the arc part of electrode replaces the ground shielding ring, suppresses the partial discharge that produces in the insulator operation process, improves the life of insulator, like this, three-phase is the case insulator subassembly altogether can be applicable to electrified demonstration monitoring and the different operating mode of ground shielding, and the commonality is stronger, need not to design and process two kinds of insulators, and the cost is lower.
Further improved, the three-phase common-box insulator assembly further comprises an insulating sleeve, wherein the insulating sleeve is at least penetrated in the radial through hole when the electrified condition is monitored, and the electrified display wiring body penetrates through the insulating sleeve.
The beneficial effects are that: by means of the design, the live display wiring body is isolated from the flange in an insulating mode through the insulating sleeve, gaps between the live display wiring body and the radial through holes are prevented from being broken down when the electrode is electrified, the electrode is in conductive communication with the grounding flange, and the electrification condition of the electrode cannot be monitored.
Further improved, the three-phase common-box insulator assembly comprises the live display wiring body, a threaded hole is formed in the connecting portion, the live display wiring body comprises a wiring bolt matched with the threaded hole, and a lead wire used for being connected with the live display device is arranged on the wiring bolt.
The beneficial effects are that: through the design, the live display device is communicated with the connecting part through the wiring bolt, and then the live condition of the electrode can be monitored through the live display device, and the wiring bolt is simple in structure and convenient to install and detach.
Further improved, the three-phase common-box insulator assembly further comprises a joint which is fixed on the peripheral surface of the flange in a sealing manner, the joint is provided with a threading channel for the lead to pass through, the threading channel comprises a threading opening for the lead to pass through and a threading opening for the lead to pass out, the threading opening is communicated with the radial through hole of the flange, and the threading channel is an L-shaped channel.
The beneficial effects are that: by the design, the joint sealing cover is arranged at the orifice of the radial through hole, so that rainwater in the external environment is prevented from directly entering the radial through hole.
Further improved, the grounding piece connecting part is a threaded hole arranged at the hole opening of the radial through hole, and the grounding piece is used for being screwed on the threaded hole.
The beneficial effects are that: the connecting part of the grounding piece is formed by arranging the threaded hole at the orifice of the radial through hole, so that the detachable assembly of the grounding piece is convenient, and the structure is simple.
Further improved, the three-phase common-box insulator assembly further comprises the grounding piece, wherein the grounding piece comprises a conductive plug screwed on the threaded hole and a conductive spring pressed between the conductive plug and the connecting part.
The beneficial effects are that: by the design, the conductive spring ensures reliable contact between the conductive plug and the connecting part, and the conductive plug prevents external rainwater and sundries from entering.
Further improvements are achieved in that the conductive plugs are arranged flush with the outer circumferential surface of the flange or are embedded in the threaded holes.
The beneficial effects are that: the design is simple in structure, and the conductive plug is prevented from being covered by an additional structure when the conductive plug extends out of the peripheral surface of the flange, so that the conductive plug is prevented from being communicated with other objects in a conductive manner, and personal safety is threatened. Moreover, the conductive plug does not extend out of the flange, so that point discharge is avoided.
Further improved, the three-phase common-box insulator assembly further comprises waterproof glue coated on the peripheral surface of the flange to seal the conductive plug.
The beneficial effects are that: the waterproof plug is sealed by the waterproof glue to isolate water vapor in the external environment, and the waterproof plug is simple in structure and convenient to realize.
Further improved, the arc-shaped part is of a circular arc rod-shaped structure.
The beneficial effects are that: the arc-shaped structure part is regular in shape and convenient to process.
In order to achieve the above purpose, the technical scheme of the GIS of the invention is as follows:
the GIS comprises a shell and an insulator assembly, wherein a three-phase center conductor is arranged in the shell, a three-phase common-box insulator assembly is arranged in the shell, the three-phase common-box insulator assembly comprises a three-phase common-box insulator, the three-phase common-box insulator comprises three-phase center inserts which are arranged in a 'delta' shape, flanges and insulating parts which are arranged between the center inserts and the flanges, the three-phase center conductor is connected with the three-phase center inserts which are arranged in a 'delta' shape one by one, the shell is connected with the flanges, electrodes are uniformly poured in the insulating parts corresponding to the center inserts, the electrodes are correspondingly arranged in the radial direction of the corresponding center inserts, the electrodes comprise arc-shaped parts which correspond to the center inserts and extend along the circumferential direction of the insulating parts, the three-phase common-box insulator assembly also comprises connecting parts, the connecting parts are positioned on one side of the arc-shaped parts, and radial through holes are formed in the flanges corresponding to the connecting parts; the connecting part is used for being connected with the electrified display wiring body penetrating into the radial through hole when the electrified state is monitored so as to enable the electrode to be communicated with the electrified display device; the connecting part is also used for being connected with a grounding piece penetrating into the radial through hole when the grounding shield is grounded, and the flange is provided with a grounding piece connecting part used for being connected with the grounding piece.
The beneficial effects are that: in the GIS, the electrode is poured at the position corresponding to the three-phase center insert in the insulating part, and the arc-shaped part of the electrode corresponds to the center insert and extends along the circumferential direction of the insulating part, so that the area of the arc-shaped part opposite to the center conductor is larger, and the electrode can acquire the electrified signal of the center conductor more accurately and sensitively. When the three-phase common-box insulator assembly is used for monitoring the electrification condition, the connecting part of the electrode is communicated with the electrification display device through the electrification display wiring body, and the electrification display device monitors the electrification condition of the central conductor of the GIS; when three-phase is the case insulator subassembly altogether and is not used for monitoring electrified situation, the connecting portion of electrode is connected with the flange through the grounding piece for the arc part of electrode replaces the ground shielding ring, suppresses the partial discharge that produces in the insulator operation process, improves the life of insulator, like this, three-phase is the case insulator subassembly altogether can be applicable to electrified demonstration monitoring and the different operating mode of ground shielding, and the commonality is stronger, need not to design and process two kinds of insulators, and the cost is lower.
Further improved, the three-phase common-box insulator assembly further comprises an insulating sleeve, wherein the insulating sleeve is at least penetrated in the radial through hole when the electrified condition is monitored, and the electrified display wiring body penetrates through the insulating sleeve.
The beneficial effects are that: by means of the design, the live display wiring body is isolated from the flange in an insulating mode through the insulating sleeve, gaps between the live display wiring body and the radial through holes are prevented from being broken down when the electrode is electrified, the electrode is in conductive communication with the grounding flange, and the electrification condition of the electrode cannot be monitored.
Further improved, the three-phase common-box insulator assembly comprises the live display wiring body, a threaded hole is formed in the connecting portion, the live display wiring body comprises a wiring bolt matched with the threaded hole, and a lead wire used for being connected with the live display device is arranged on the wiring bolt.
The beneficial effects are that: through the design, the live display device is communicated with the connecting part through the wiring bolt, and then the live condition of the electrode can be monitored through the live display device, and the wiring bolt is simple in structure and convenient to install and detach.
Further improved, the three-phase common-box insulator assembly further comprises a joint which is fixed on the peripheral surface of the flange in a sealing manner, the joint is provided with a threading channel for the lead to pass through, the threading channel comprises a threading opening for the lead to pass through and a threading opening for the lead to pass out, the threading opening is communicated with the radial through hole of the flange, and the threading channel is an L-shaped channel.
The beneficial effects are that: by the design, the joint sealing cover is arranged at the orifice of the radial through hole, so that rainwater in the external environment is prevented from directly entering the radial through hole.
Further improved, the grounding piece connecting part is a threaded hole arranged at the hole opening of the radial through hole, and the grounding piece is used for being screwed on the threaded hole.
The beneficial effects are that: the connecting part of the grounding piece is formed by arranging the threaded hole at the orifice of the radial through hole, so that the detachable assembly of the grounding piece is convenient, and the structure is simple.
Further improved, the three-phase common-box insulator assembly further comprises the grounding piece, wherein the grounding piece comprises a conductive plug screwed on the threaded hole and a conductive spring pressed between the conductive plug and the connecting part.
The beneficial effects are that: by the design, the conductive spring ensures reliable contact between the conductive plug and the connecting part, and the conductive plug prevents external rainwater and sundries from entering.
Further improvements are achieved in that the conductive plugs are arranged flush with the outer circumferential surface of the flange or are embedded in the threaded holes.
The beneficial effects are that: the design is simple in structure, and the conductive plug is prevented from being covered by an additional structure when the conductive plug extends out of the peripheral surface of the flange, so that the conductive plug is prevented from being communicated with other objects in a conductive manner, and personal safety is threatened. Moreover, the conductive plug does not extend out of the flange, so that point discharge is avoided.
Further improved, the three-phase common-box insulator assembly further comprises waterproof glue coated on the peripheral surface of the flange to seal the conductive plug.
The beneficial effects are that: the waterproof plug is sealed by the waterproof glue to isolate water vapor in the external environment, and the waterproof plug is simple in structure and convenient to realize.
Further improved, the arc-shaped part is of a circular arc rod-shaped structure.
The beneficial effects are that: the arc-shaped structure part is regular in shape and convenient to process.
Drawings
FIG. 1 is a schematic diagram of a partial structure of a GIS of the present invention (wherein three-phase insulator assemblies are used to detect an electrified condition);
FIG. 2 is a schematic view of the insulator assembly of FIG. 1 for detecting an electrified condition;
FIG. 3 is a schematic view of the electrode in FIG. 2;
FIG. 4 is a cross-sectional view H-H of FIG. 2;
FIG. 5 is a schematic view of the structure of the insulator assembly of FIG. 1 for use in a ground shield;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
in the figure: 11. a center conductor; 12. a housing; 13. a center insert; 14. an insulating part; 15. a flange; 16. an electrode; 17. a joint; 18. a threading passage; 19. a wiring bolt; 20. a grounding member connection portion; 21. an insulating sleeve; 22. a lead wire; 23. an arc-shaped portion; 24. a connection portion; 25. a conductive plug; 26. a conductive spring; 27. and (3) waterproof glue.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the 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 invention, as 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 made by a person skilled in the art without making any inventive effort, are intended to be within the 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. Moreover, terms such as "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 one … …" or the like is not excluded from a process, method, or the like that includes the element.
In the description of the present invention, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; either directly, indirectly through intermediaries, or in communication with the interior of the two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the term "provided" may be interpreted broadly, and for example, an object "provided" may be a part of a body, may be separately disposed from the body, and may be connected to the body, where the connection may be a detachable connection or an undetachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
The present invention is described in further detail below with reference to examples.
Example 1 of GIS of the present invention:
as shown in fig. 1 and 2, the GIS includes a housing 12 and a three-phase common-box insulator assembly, a three-phase central conductor 11 is disposed in the housing 12, the three-phase common-box insulator assembly includes a three-phase common-box insulator, the three-phase common-box insulator is a disc insulator, the three-phase common-box insulator includes a three-phase central insert 13 arranged in a 'delta' shape, a flange 15, and an insulating portion 14 disposed between the central insert 13 and the flange 15, the three-phase central conductor 11 is respectively connected with the three-phase central insert 13 in a one-to-one correspondence manner, and the housing 12 is connected with the flange 15. Electrodes 16 are cast in the insulating portion 14 corresponding to each of the center inserts 13, the electrodes 16 being disposed in radial correspondence with the respective center inserts 13.
In this embodiment, as shown in fig. 2 to 4, the electrodes 16 include a connection portion 24 and an arc portion 23 radially corresponding to the central insert 13 and extending along the circumferential direction of the insulating portion 14, the connection portion 24 is located on one side of the arc portion 23 facing away from the central insert 13, the connection portion 24 is provided with a threaded hole radially extending along the insulating portion 14, the connection portion 24 of each of the electrodes 16 on the flange 15 is provided with a radial through hole, the radial through hole penetrates the flange 15 along the radial direction of the flange 15, the outer hole of the radial through hole is provided with a grounding member connection portion 20, and the grounding member connection portion 20 is a threaded hole formed at the hole of the radial through hole. In this embodiment, the arc-shaped portion 23 has a circular arc rod-shaped structure. In other embodiments, the arcuate portions 23 are sheet-like structures or mesh-like structures extending circumferentially along the insulating portion 14.
The three-phase common-box insulator assembly of the embodiment is not only suitable for use conditions requiring to monitor the electrified condition, but also suitable for applicable conditions requiring no monitoring of the electrified condition.
As shown in fig. 2 to 4, when the three-phase common box insulator assembly is used for monitoring the live condition, the three-phase common box insulator assembly further includes a terminal bolt 19 and a joint 17 sealingly fixed to the outer peripheral surface of the flange 15, specifically, the joint 17 is fixed to the outer peripheral surface of the flange 15 by a bolt. The head of the wiring bolt 19 is provided with a lead 22 for connecting with the electrified display device, the joints 17 are provided with three joints 17, the three joints 17 are provided with threading channels 18 for the lead 22 to pass through, the threading channels 18 are L-shaped channels, the threading channels 18 comprise penetrating openings for the lead 22 to penetrate through and penetrating openings for the lead 22 to penetrate out, the penetrating openings are communicated with radial through holes of the flange 15, the penetrating openings face the ground, and rainwater is prevented from entering the electrode 16 through the penetrating openings. An insulating sleeve 21 is arranged in the radial through hole in a penetrating manner, and a wiring bolt 19 is arranged in the insulating sleeve 21 in a penetrating manner and matched with a threaded hole of the connecting part 24 so as to be communicated with the electrified display device and the electrode 16, so that the electrified condition of the central conductor 11 in the GIS can be monitored. Here, since the connection portion 24 of the electrode 16 does not extend to the radial edge position of the insulating portion 14, one end of the insulating sleeve 21 protrudes into the insulating portion 14 and abuts against the electrode 16, and the other end of the insulating sleeve 21 protrudes beyond the outer peripheral surface of the flange 15. In this embodiment, the connection bolt 19 constitutes a live display connection body connected to the electrode 16 to connect to a live display device.
In this embodiment, as shown in fig. 5 and 6, when the three-phase common-box insulator assembly is not required to monitor the live display condition and only plays a role of supporting and connecting the central conductor 11, the problem of partial discharge of the three-phase common-box insulator needs to be considered. Specifically, the three-phase common box insulator assembly comprises a grounding member, the grounding member comprises a conductive plug 25 screwed in the grounding member connecting part 20 and a conductive spring 26 pressed between the conductive plug 25 and the connecting part 24, and the conductive plug 25 and the conductive spring 26 are communicated with the electrode 16 and the grounded flange 15, so that the arc-shaped part 23 of the electrode 16 can replace a grounded shielding ring in a traditional mode, the electric field intensity at the flange 15 is reduced, and the partial discharge of the insulating part 14 is reduced. Moreover, the conductive plug 25 is flush with the outer peripheral surface of the flange 15, and waterproof glue 27 for sealing the conductive plug 25 is smeared on the outer peripheral surface of the flange 15 to prevent water vapor in the external environment from entering the electrode 16. In other embodiments, the conductive plug 25 is embedded in the ground connection 20, i.e., the radially outer end surface of the conductive plug 25 is located within the ground connection 20.
When the three-phase common-box insulator assembly monitors the electrified condition, the insulating sleeve 21 is penetrated and installed in the three radial through holes of the flange 15, and then the three connectors 17 are respectively and tightly fixed on the outer peripheral surface of the flange 15, so that the penetrating holes of each connector 17 are communicated with the corresponding radial through holes, the wiring bolts 19 with the leads 22 penetrate the threading channels 18 from the penetrating holes of the connectors 17 and then penetrate the insulating sleeve 21 to be matched with the threaded holes of the wiring parts, thereby communicating the electrified display monitoring device with the electrodes 16, and further starting to monitor the electrified condition.
When the three-phase common-box insulator assembly does not need to monitor the conduction display condition, the conductive spring 26 is firstly arranged in the radial through hole of the flange 15, then the conductive plug 25 is rotatably arranged in the grounding piece connecting part 20 and is pressed on the conductive spring 26, and finally the waterproof glue 27 is smeared on the peripheral surface of the flange 15 to seal the conductive plug 25. In this way, when the GIS works, the electrode 16 is communicated with the grounded flange 15 through the conductive plug 25 and the conductive spring 26, the arc-shaped part 23 replaces the grounded shielding ring in the conventional mode, the electric field intensity at the flange 15 is reduced, and the partial discharge of the insulating part 14 is reduced.
In the GIS, the electrode is poured at the position corresponding to the three-phase center insert in the insulating part, and the arc-shaped part of the electrode corresponds to the center insert and extends along the circumferential direction of the insulating part, so that the area of the arc-shaped part opposite to the center conductor is larger, and the electrode can acquire the electrified signal of the center conductor more accurately and sensitively. When the three-phase common-box insulator assembly is used for monitoring the electrification condition, the connecting part of the electrode is communicated with the electrification display device through the electrification display wiring body, and the electrification display device monitors the electrification condition of the central conductor of the GIS; when three-phase is the case insulator subassembly altogether and is not used for monitoring electrified situation, the connecting portion of electrode is connected with the flange through the grounding piece for the arc part of electrode replaces the ground shielding ring, suppresses the partial discharge that produces in the insulator operation process, improves the life of insulator, like this, three-phase is the case insulator subassembly altogether can be applicable to electrified demonstration monitoring and the different operating mode of ground shielding, and the commonality is stronger, need not to design and process two kinds of insulators, and the cost is lower.
It should be noted that in the present embodiment, the junction bolt 19, the insulating bush 21, the lead wire 22, and the joint 17 are components required for monitoring the live display condition, and the conductive plug 25, the conductive spring 26, and the waterproof adhesive 27 are components required for the ground shield. When the device is shipped specifically, corresponding components are provided according to the demands of customers, or when the device is shipped, both types of components are not provided, and users can be provided on site according to the demands.
It should be noted that the three-phase common box insulator assembly in this embodiment includes a disc insulator, and in practice, the structure of this embodiment is also applicable to a basin insulator.
It should be noted that the insulating sheath 21 in the present embodiment is fitted not only in the radial through hole but also in the insulating portion 14, and the insulating sheath 21 may be fitted only in the radial through hole at the time of actual assembly.
Example 2 of GIS of the present invention:
the difference between this embodiment and embodiment 1 is that: in embodiment 1, the connection portion 24 is provided with a screw hole, the live display wiring body includes a wiring bolt 19 fitted with the screw hole, and the wiring bolt 19 is provided with a lead wire 22 for connection with the live display device. In this embodiment, be equipped with the unthreaded hole on the connecting portion, electrified display connector includes the polished rod, and the radial through-hole on the polished rod passing flange cooperates with the unthreaded hole of connecting portion, and the one end of keeping away from central inserts on the polished rod is equipped with the lead wire that is used for linking to each other with electrified display device. In other embodiments, the threaded hole on the connecting unit is eliminated, when the electrified display condition needs to be monitored, an insulating seat is fixed on the outer peripheral surface of the flange, a metal insert is installed in the insulating seat and connected with the electrified display device, and a conductive spring is pressed between the metal insert penetrating through the radial through hole and the connecting unit and is communicated with the electrified display device through the conductive spring and the metal insert. At this time, in order to prevent the discharge phenomenon from occurring between the conductive spring and the wall of the radial through hole, an insulating sleeve is also installed in the radial through hole. At this time, although the connection portion is not provided with a screw hole or a light hole, conductive communication with the outside can be achieved through the end face thereof.
Example 3 of GIS of the present invention:
the difference between this embodiment and embodiment 1 is that: in embodiment 1, the connector 17 has a threading channel 18 through which the thread 22 passes, the threading channel 18 includes a penetration opening through which the thread 22 passes and a penetration opening through which the thread 22 passes, the penetration opening communicates with the radial through hole of the flange 15, and the threading channel 18 is an L-shaped channel. In this embodiment, the connector has a straight-line-shaped threading channel, and the threading opening of the threading channel are located on the same straight line. In other embodiments, the joint is eliminated and, to prevent the binding bolts from being exposed, insulating resin may be poured at the binding bolts for protection.
Example 4 of GIS of the present invention:
the difference between this embodiment and embodiment 1 is that: in embodiment 1, the ground connection 20 is a threaded hole at the aperture of the radial through hole, and the ground is for screwing on the threaded hole. In this embodiment, the optical hole of the radial through hole forms the grounding member connecting portion, and the grounding member is in interference fit with the optical hole. In other embodiments, the grounding member connection portion is a threaded hole formed in an outer circumferential surface of the flange, and at this time, the grounding member includes a connection bolt screwed to the connection portion, and the connection bolt is connected to the threaded hole by a wire to achieve grounding.
Example 5 of GIS of the present invention:
the difference between this embodiment and embodiment 1 is that: in embodiment 1, the grounding member includes a conductive plug 25 fitted with the screw hole and a conductive spring 26 press-fitted between the conductive plug 25 and the connection portion 24. In this embodiment, the grounding member includes a conductive plug portion mated with the threaded hole and a conductive rod mated with the connecting portion, and the conductive rod may directly penetrate into the threaded hole of the connecting portion or contact with an end surface of the connecting portion to achieve conductive communication.
Example 6 of GIS of the present invention:
the difference between this embodiment and embodiment 1 is that: in embodiment 1, a waterproof adhesive 27 is applied to the outer peripheral surface of the flange 15 to seal the conductive plug 25. In this embodiment, a cover plate is fixed on the outer peripheral surface of the flange in a sealing manner to seal the conductive plug.
Example 7 of GIS of the present invention:
the difference between this embodiment and embodiment 1 is that: in embodiment 1, the conductive plugs 25 are arranged flush with the outer peripheral surface of the flange 15. In this embodiment, the conductive plug extends out of the outer peripheral surface of the flange, and at this time, a sealing cover needs to be sealed and fixed on the outer peripheral surface of the flange to seal the conductive plug, so as to prevent objects in the external environment from being electrically connected with the conductive plug.
Embodiments of the three-phase common box insulator assembly of the present invention: the structure of the three-phase common-box insulator assembly is the same as that of any one of embodiments 1 to 7 of the GIS described above, and will not be described in detail here.
It should be noted that the above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, but may be modified without inventive effort or equivalent substitution of some technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The three-phase common box insulator assembly comprises a three-phase common box insulator, wherein the three-phase common box insulator comprises three-phase center inserts (13) which are distributed in a 'delta' shape, flanges (15) and insulating parts (14) which are arranged between the center inserts (13) and the flanges (15), electrodes (16) are uniformly cast in the insulating parts (14) corresponding to the center inserts (13), and the electrodes (16) are correspondingly distributed with the corresponding center inserts (13) along the radial direction, and the three-phase common box insulator assembly is characterized in that the electrodes (16) comprise arc-shaped parts (23) which correspond to the center inserts (13) and extend along the circumferential direction of the insulating parts (14), and further comprise connecting parts (24), wherein the connecting parts (24) are positioned on one side, opposite to the center inserts (13), of the arc-shaped parts (23), and radial through holes are formed in the flanges (15) corresponding to the connecting parts (24); the connection portion (24) is used for being connected with a charged display wiring body penetrating into the radial through hole when the charged state is monitored so as to enable the electrode (16) to be communicated with a charged display device; the connecting part (24) is also used for being connected with a grounding piece penetrating into the radial through hole when in grounding shielding, and the flange (15) is provided with a grounding piece connecting part (20) used for being connected with the grounding piece; the three-phase common-box insulator assembly further comprises an insulating sleeve (21), wherein the insulating sleeve (21) is at least penetrated in the radial through hole when the electrified condition is monitored, and the electrified display wiring body penetrates through the insulating sleeve (21); the three-phase common-box insulator assembly further comprises an electrified display wiring body, a threaded hole is formed in the connecting portion (24), the electrified display wiring body comprises a wiring bolt (19) matched with the threaded hole, and a lead (22) used for being connected with an electrified display device is arranged on the wiring bolt (19).
2. The three-phase common box insulator assembly according to claim 1, further comprising a joint (17) sealingly fixed on the outer peripheral surface of the flange (15), the joint (17) having a threading channel (18) through which the lead wire (22) passes, the threading channel (18) comprising a threading opening through which the lead wire (22) passes and a threading opening through which the lead wire (22) passes, the threading opening communicating with the radial through hole of the flange (15), the threading channel (18) being an L-shaped channel.
3. Three-phase common box insulator assembly according to any one of claims 1 to 2, characterized in that the ground connection (20) is a threaded hole provided at the aperture of a radial through hole, the ground being intended to be screwed onto the threaded hole.
4. A three-phase common box insulator assembly according to claim 3, characterized in that the three-phase common box insulator assembly further comprises the grounding member comprising a conductive plug (25) screwed onto the threaded hole and a conductive spring (26) press-fitted between the conductive plug (25) and the connection portion (24).
5. Three-phase common box insulator assembly according to claim 4, characterized in that the conductive plugs (25) are arranged flush with the outer circumferential surface of the flange (15) or are embedded in the threaded holes.
6. The three-phase common box insulator assembly according to claim 5, further comprising a waterproof glue (27) applied on the outer peripheral surface of the flange (15) to close the conductive plug (25).
7. Three-phase common box insulator assembly according to any one of claims 1 to 2, characterized in that the arc-shaped portion (23) is of circular arc rod-shaped configuration.
Gis comprising a housing (12), wherein a three-phase central conductor (11) is arranged in the housing (12), characterized in that a three-phase common box insulator assembly according to any one of claims 1 to 7 is mounted on the housing (12), the three-phase central conductor (11) is connected with three-phase central inserts (13) arranged in a 'delta' shape in the three-phase common box insulator assembly in a one-to-one correspondence manner, and the housing (12) is connected with a flange (15) of the three-phase common box insulator assembly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111547909.5A CN114465150B (en) | 2021-12-16 | 2021-12-16 | Three-phase common-box insulator assembly and GIS |
| CN202410135903.4A CN118074000A (en) | 2021-12-16 | 2021-12-16 | Three-phase common-box insulator assembly and GIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111547909.5A CN114465150B (en) | 2021-12-16 | 2021-12-16 | Three-phase common-box insulator assembly and GIS |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410135903.4A Division CN118074000A (en) | 2021-12-16 | 2021-12-16 | Three-phase common-box insulator assembly and GIS |
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| Publication Number | Publication Date |
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| CN114465150A CN114465150A (en) | 2022-05-10 |
| CN114465150B true CN114465150B (en) | 2024-03-29 |
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| CN202410135903.4A Pending CN118074000A (en) | 2021-12-16 | 2021-12-16 | Three-phase common-box insulator assembly and GIS |
| CN202111547909.5A Active CN114465150B (en) | 2021-12-16 | 2021-12-16 | Three-phase common-box insulator assembly and GIS |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410135903.4A Pending CN118074000A (en) | 2021-12-16 | 2021-12-16 | Three-phase common-box insulator assembly and GIS |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114465150A (en) | 2022-05-10 |
| CN118074000A (en) | 2024-05-24 |
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