CN110739646A - radial compensation units for GIL and GIL - Google Patents
radial compensation units for GIL and GIL Download PDFInfo
- Publication number
- CN110739646A CN110739646A CN201910925778.6A CN201910925778A CN110739646A CN 110739646 A CN110739646 A CN 110739646A CN 201910925778 A CN201910925778 A CN 201910925778A CN 110739646 A CN110739646 A CN 110739646A
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- China
- Prior art keywords
- gil
- compensation unit
- pipe section
- radial compensation
- telescopic joint
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Classifications
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- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0468—Corrugated
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- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
- H02G3/0616—Joints for connecting tubing to casing
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- 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
- H02G5/061—Tubular casings
Abstract
The invention relates to radial compensation units for GIL and the GIL, wherein each radial compensation unit comprises a telescopic joint, a short-circuit cylinder body and a middle conductor, wherein the telescopic joint comprises a middle straight pipe section and corrugated pipe sections respectively connected to two ends of the middle straight pipe section, the opposite ends of the two corrugated pipe sections are respectively provided with a connecting flange, two ends of the short-circuit cylinder body are provided with a connecting flange, a disassembly maintenance hole is formed in the wall of the middle cylinder body, a sealing cover is hermetically installed on an orifice of the disassembly maintenance hole, the short-circuit cylinder body is hermetically connected to end of the telescopic joint and forms a cylinder structure together with the telescopic joint, and the middle conductor is arranged in sections and detachably connected and is used for being coaxially installed in the cylinder structure.
Description
Technical Field
The invention relates to radial compensation units for GIL and the GIL.
Background
The gas insulated metal enclosed transmission line (GIL) adopts a gas insulated metal enclosed transmission technology, is widely applied to due to the advantages of large transmission capacity, small occupied area, high reliability and the like, and comprises an outer cylinder, wherein a bus for transmitting current is arranged in the outer cylinder, and constant-pressure insulating gas for realizing insulation between the bus and the outer cylinder is filled in the outer cylinder.
Because of temperature changes caused by alternate seasons or large day-night temperature differences in some areas, GIL often expands with heat and contracts with cold, so that -determined influences are caused on line pipe sections horizontally switched from a vertical shaft or on line pipe sections with vertical corners on the ground, usually, a radial compensation unit is required to be arranged at a corner position to realize deformation compensation of of two vertical pipe sections in the radial direction, or because of uneven settlement of a foundation, height differences of two adjacent pipe sections in a straight-line power transmission line in the vertical direction are caused, and at the moment, a power transmission line radial compensation unit is also required to be arranged between the two pipe sections.
The compensation unit that commonly uses among the prior art at present is mostly the bellows, concatenates the bellows in the suitable position department of circuit promptly, and the deformation that can realize through bellows ripple structure compensates, but, in the higher condition of deflection demand, the bellows length that needs is longer, and because the bellows need bear inside gas pressure, overall structure stability is relatively poor when length is longer, will lead to transmission line not stable enough in bellows department like this. Therefore, at present, no compensation structure capable of meeting the requirement of large deformation exists.
Disclosure of Invention
The invention aims to provide radial compensation units for GILs, which are used for solving the problem of small compensation amount of the existing deformation compensation mode, and also provides GILs using the radial compensation units.
In order to achieve the above object, the technical solution of the present invention for the radial compensation unit of the GIL is:
the method comprises the following steps:
the telescopic joint comprises a middle straight pipe section and corrugated pipe sections respectively connected to two ends of the middle straight pipe section, and connecting flanges are respectively arranged at opposite ends of the two corrugated pipe sections;
the device comprises a short-circuit barrel body, a connecting flange is arranged at two ends of the short-circuit barrel body, a dismounting maintenance hole is arranged on the middle barrel wall, and a sealing cover is hermetically arranged on an orifice of the dismounting maintenance hole;
the short-circuit cylinder is connected to the end of the telescopic joint in a sealing mode and forms a cylinder structure together with the telescopic joint, and two ends of the cylinder structure are respectively used for connecting two adjacent sections of the GIL in a sealing mode;
the intermediate conductor is arranged in sections and detachably connected and is coaxially arranged in the cylinder structure, and two ends of the intermediate conductor are respectively used for radially deflecting buses in two adjacent pipe sections of the plug-in connection GIL.
The expansion joint of the radial compensation unit, which is mainly used for compensating deformation, is connected with the middle straight pipe section between the two corrugated pipes, so that the overall length of the expansion joint is longer, a larger radial offset distance can be generated when the two adjacent pipe sections are offset by a smaller angle, and meanwhile, the middle straight pipe section has higher structural strength than the corrugated pipes, thereby ensuring the overall structural stability of the expansion joint and further ensuring the stability of GIL.
Step , the radial compensation unit further comprises a reinforcing support rod, two ends of the reinforcing support rod respectively penetrate through a connecting flange between the short-circuit cylinder and the telescopic joint and a connecting flange of the telescopic joint back to the short-circuit cylinder, and are in locking connection with corresponding connecting flanges through locking nuts on two sides of the connecting flanges, steps are carried out through the arrangement of the reinforcing support rod, the stability of the whole telescopic joint is guaranteed, and steps are carried out, so that the reliability of the GIL is improved.
More specifically, the end that is close to the short circuit barrel of strengthening the bracing piece passes the flange of telescopic joint, and the support reinforcing effect of strengthening the bracing piece only acts on the telescopic joint like this, when the telescopic joint is the skew of compensating two pipe sections, supports the change state of the deformation adaptability of bracing piece ability along with the telescopic joint, and is better with the supporting effect to the enhancement of telescopic joint like this.
Or a backing ring is clamped between the locking nut and the flange face of the corresponding connecting flange, and the backing ring is matched with the flange face which is attached to the backing ring through an arc face, so that the adaptability deflection of the reinforcing support rod is enhanced when the expansion joint compensates for radial deformation.
Therefore, fixed constraint action can be achieved on the radial position of the middle straight pipe section through the reinforcing support rods, the middle straight pipe section and corrugated pipe sections at two ends are more easily ensured to be coaxial, in addition, in aspect, the limiting support plates can also provide fixed support action for the reinforcing support rods, and the middle strength of the reinforcing support rods is improved.
On the basis of the various schemes, the middle conductor is of a three-section structure, and two sections at two ends are provided with inserting ends used for being inserted into sliding contacts of the buses of the corresponding pipe sections in a sliding mode. This facilitates the disassembly and assembly of the intermediate conductor.
Or the radial compensation unit also comprises a flow guide row which spans the expansion joint and is used for electrically conducting the short-circuit cylinder and the pipe section outer cylinder far away from the side of the short-circuit cylinder , so that the through-flow capacity of the corresponding position of the expansion joint can be improved, and the through-flow capacity of the expansion joint is equivalent to that of the GIL outer cylinder.
More optimally, the guide row is provided with a wave-shaped structure extending in the axial direction. The wave structure can make the water conservancy diversion arrange comparatively easily along with adaptability deformation when the telescopic joint takes place to deform.
The technical scheme of the GIL of the invention is as follows: the pipe comprises a plurality of pipe sections which are hermetically connected, wherein each pipe section comprises an outer cylinder and a bus which is coaxially arranged in the outer cylinder;
the radial compensation unit has concatenated between two adjacent pipe sections of part, and the radial compensation unit includes:
the telescopic joint comprises a middle straight pipe section and corrugated pipe sections respectively connected to two ends of the middle straight pipe section, and connecting flanges are respectively arranged at opposite ends of the two corrugated pipe sections;
the two ends of the short-circuit barrel are provided with connecting flanges, the middle barrel wall is provided with a disassembly maintenance hole, and a seal cover is hermetically arranged on an orifice of the disassembly maintenance hole;
the short-circuit cylinder is connected to the end of the telescopic joint in a sealing manner and forms a cylinder structure together with the telescopic joint;
the intermediate conductor is arranged in sections and detachably connected and is used for being coaxially arranged in the cylinder structure;
the cylinder structure of the radial compensation unit is hermetically connected with the outer cylinder of the corresponding pipe section, and the middle conductor of the radial compensation unit is in radially-inclined plug-in connection with the corresponding pipe section bus.
The expansion joint of the GIL mainly used for compensating deformation is connected with the middle straight pipe section between the two corrugated pipes, so that the overall length of the expansion joint is longer, a larger radial offset distance can be generated when the two adjacent pipe sections are offset by a smaller angle, and meanwhile, the middle straight pipe section has higher structural strength than the corrugated pipes, so that the overall structural stability of the expansion joint is ensured, and the stability of the GIL is further ensured.
Step , the radial compensation unit further comprises a reinforcing support rod, two ends of the reinforcing support rod respectively penetrate through a connecting flange between the short-circuit cylinder and the telescopic joint and a connecting flange of the telescopic joint back to the short-circuit cylinder, and are in locking connection with corresponding connecting flanges through locking nuts on two sides of the connecting flanges, steps are carried out through the arrangement of the reinforcing support rod, the stability of the whole telescopic joint is guaranteed, and steps are carried out, so that the reliability of the GIL is improved.
More specifically, the end that is close to the short circuit barrel of strengthening the bracing piece passes the flange of telescopic joint, and the support reinforcing effect of strengthening the bracing piece only acts on the telescopic joint like this, when the telescopic joint is the skew of compensating two pipe sections, supports the change state of the deformation adaptability of bracing piece ability along with the telescopic joint, and is better with the supporting effect to the enhancement of telescopic joint like this.
Or a backing ring is clamped between the locking nut and the flange face of the corresponding connecting flange, and the backing ring is matched with the flange face which is attached to the backing ring through an arc face, so that the adaptability deflection of the reinforcing support rod is enhanced when the expansion joint compensates for radial deformation.
Therefore, fixed constraint action can be achieved on the radial position of the middle straight pipe section through the reinforcing support rods, the middle straight pipe section and corrugated pipe sections at two ends are more easily ensured to be coaxial, in addition, in aspect, the limiting support plates can also provide fixed support action for the reinforcing support rods, and the middle strength of the reinforcing support rods is improved.
On the basis of the various schemes, the middle conductor is of a three-section structure, and two sections at two ends are provided with inserting ends used for being inserted into sliding contacts of the buses of the corresponding pipe sections in a sliding mode. This facilitates the disassembly and assembly of the intermediate conductor.
Or the radial compensation unit also comprises a flow guide row which spans the expansion joint and is used for electrically conducting the short-circuit cylinder and the pipe section outer cylinder far away from the side of the short-circuit cylinder , so that the through-flow capacity of the corresponding position of the expansion joint can be improved, and the through-flow capacity of the expansion joint is equivalent to that of the GIL outer cylinder.
More optimally, the guide row is provided with a wave-shaped structure extending in the axial direction. The wave structure can make the water conservancy diversion arrange comparatively easily along with adaptability deformation when the telescopic joint takes place to deform.
In addition, of the pipe section bus and the intermediate conductor are provided with sliding contacts, and the other of the pipe section bus and the intermediate conductor are provided with plug ends which are in plug connection with the sliding contacts, the sliding contacts are provided with flaring structures, contact fingers for realizing the electrical connection between the plug ends and the sliding contacts are arranged in the flaring structures, and flaring cavities of the flaring structures form redundant spaces for the radial relative deflection of the plug ends and the sliding contacts.
Drawings
FIG. 1 is a schematic diagram of a GIL embodiment of the present invention showing the radial compensation units coupled to adjacent pipe segments;
fig. 2 is a schematic view of another embodiments of the GIL of the present invention showing the locking connection of the reinforcing support bar and the attachment flange by means of a locking nut.
In the drawing, 10-insulating support, 11- th pipe section outer cylinder, 110- th pipe section bus, 12-second pipe section outer cylinder, 120-second pipe section bus, 20-middle straight pipe section, 21- th corrugated pipe section, 22-second corrugated pipe section, 23-connecting flange, 3-short-circuit cylinder, 30-disassembly maintenance hole, 31-sealing cover, 41- th conductor, 42-second conductor, 43-third conductor, 5-flow guide bar, 6-reinforcing support rod, 7-limiting support plate, 80-locking nut, 81- th backing ring and 82-second backing ring.
Detailed Description
Specific embodiments of the GIL of the present invention.
The GIL comprises a plurality of pipe sections which are connected in a sealing mode, wherein each pipe section comprises an outer barrel and a bus which is coaxially installed in the outer barrel, insulating gas with constant pressure is filled in the outer barrel to achieve insulation between the bus and the outer barrel, and a radial compensation unit is connected in series to the part of the GIL on the extending path to compensate radial deformation of the pipe sections when adjacent pipe sections are radially deviated due to uneven foundation settlement or self thermal expansion and contraction.
Specifically, the radial compensation unit is mostly used between two adjacent pipe sections in the plurality of pipe sections of the straight extension section and is mainly used for compensating vertical deviation between the two adjacent pipe sections caused by uneven foundation settlement, or is led out from a vertical well and connected between a vertical pipe section and a horizontal pipe section of the horizontal pipe section through a right-angle corner structure and is mainly used for compensating vertical deviation of a connecting part of the vertical pipe section and the horizontal pipe section when the vertical pipe section expands with heat and contracts with cold, or is used for compensating radial deviation of pipe sections in the two pipe sections relative to another pipe section at a connecting position with another pipe section due to expansion with heat and contraction with cold of the two pipe sections which are horizontally arranged.
Because of the connection between the GIL sections, it is prior art how the bus bars are mounted coaxially in the outer barrel of the sections by means of insulating supports, and this part of the GIL structure will not be described in detail here. The radial compensation unit connected in series to the GIL will be described in detail below with reference to fig. 1.
As shown in FIG. 1, the radial compensation unit is connected in series between two adjacent pipe sections of the GIL, the th pipe section mainly comprises a th pipe section outer cylinder 11 and a th pipe section bus bar 110 coaxially installed in the th pipe section outer cylinder 11 through an insulating support 10, and the second pipe section mainly comprises a second pipe section outer cylinder 12 and a second pipe section bus bar 120 coaxially installed in the second pipe section outer cylinder 12 through the insulating support 10.
The radial compensation unit mainly comprises two parts, wherein the th part is a short-circuit cylinder 3, the second part is a telescopic joint, connecting flanges are arranged at two ends of a main cylinder of the short-circuit cylinder 3 respectively, a disassembly maintenance hole 30 is formed in the periphery of the short-circuit cylinder, certainly, a sealing cover 31 is arranged on the disassembly maintenance hole 30 in a sealing mode in order to guarantee sealing, the telescopic joint mainly comprises a th corrugated pipe section 21, a middle straight pipe section 20 and a second corrugated pipe section 22 which are connected in a welding mode sequentially, and connecting flanges are arranged at two ends, back to back, of the th corrugated pipe section 21 and the second corrugated pipe section 22 respectively.
When the radial compensation unit is connected in series on a pipe section, the short-circuit cylinder body 3 is connected to the end of the telescopic joint in a sealing mode through the connecting flange, and only as shown in fig. 1, the short-circuit cylinder body 3 is connected to the end portion of the corrugated pipe 21 in a sealing mode through the connecting flange, at the moment, the short-circuit cylinder body 3 and the telescopic joint form a cylindrical structure, the cylindrical structure is connected between a pipe section and a second pipe section in series, and the two ends of the cylindrical structure are respectively connected with the pipe section outer cylinder 11 and the second pipe section outer.
The radial compensation unit also comprises an intermediate conductor, wherein the intermediate conductor is used for realizing the conductive connection between the th pipe section bus 110 and the second pipe section bus 120, specifically, two ends of the intermediate conductor are plug ends, the ends of the th pipe section bus 110 and the second pipe section bus 120 are provided with sliding contacts, and two ends of the intermediate conductor are respectively inserted into the sliding contacts of the corresponding bus ends.
In order to ensure the stable conduction of the middle conductor and the bus bars of the two pipe sections, the sliding contacts at the bus bar ends of the th pipe section and the second pipe section are both provided with flaring structures, the inserting end of the middle conductor is inserted into the flaring structures and is reliably and electrically connected with the sliding contacts through conductive contact fingers, so that the flaring cavities of the flaring structures provide redundant space for the deflection of the middle conductor relative to the bus bars of the pipe sections, and the relative deflection of the middle conductor and the bus bars of the pipe sections can be ensured under the condition of realizing the reliable electrical connection.
As is known, when the GIL is put into use, the outer cylinder of each pipe section has an induced current equivalent to the current transmitted by the bus bar therein, and in order to overcome the poor flow guiding capability of the corrugated pipe and ensure the overall flow guiding effect of the GIL outer cylinder, preferably, a flow guiding row 5 is further arranged on the outer side of the telescopic joint in the embodiment. As shown in fig. 1, both ends of the guide row 5 are bent and connected to a connecting flange at the end of the short-circuit cylinder 3 and an end connecting flange of the second pipe section outer cylinder 12. The flow guide rows 5 are copper rows, are multiple and are circumferentially and uniformly distributed around the expansion joint. Considering that the telescopic joint deforms in the using process, it is more preferable that the guide row 5 is provided with a wave-shaped structure extending in the axial direction, and the wave-shaped structure can enable the guide row to deform along with adaptability easily when the telescopic joint deforms.
Like the GIL that includes radial compensation unit that describes above, when two adjacent pipe sections take place radial offset, can compensate the skew distance difference between two pipe sections through the deformation of telescopic joint, and the telescopic joint is connected with middle part straight tube section between two bellows, the whole length of telescopic joint is longer like this, when the less angle of skew of two adjacent pipe sections, can produce great radial offset distance, simultaneously, the structural strength that the bellows is compared to middle part straight tube section will be high, the holistic structural stability of telescopic joint has been guaranteed, and then GIL's stability has been guaranteed.
In order to ensure the stability of the whole telescopic joint in step and improve the reliability of the GIL in the position in step , the GIL of the embodiment is further optimized and improved on the basis of the above structure, that is, the reinforcing support rod 6 is added, as shown in fig. 1, two ends of the reinforcing support rod 6 respectively penetrate through the connecting flanges at two ends of the telescopic joint, and are locked and connected with the corresponding connecting flanges through the locking nuts respectively arranged at two sides of the two connecting flanges, considering that the length of the telescopic joint is required to be about 1200mm, the length of two sections of corrugated pipes is about 300mm, in order to ensure the strength of the middle position of the reinforcing support rod 6 and avoid the bending of the reinforcing support rod, the outer peripheral surface of the middle straight pipe section 20 is provided with the radially extending limiting support plate 7, and the reinforcing support rod 6 penetrates through the limiting support plate 7, thus the radial position of the middle straight pipe section 20 can be restrained by , the reinforcing support rod 6 can be more easily kept in the position coaxial with the middle conductor, the limiting support plates 20 and the reinforcing support rods can be more easily arranged in the position coaxial with the middle straight pipe section 20 and the central conductor, and the reinforcing support rod can be more easily arranged in the number of the reinforcing support rods , which is not specifically shown in the drawing .
With the structure described above, when the expansion joint is deformed and has radial deflection at both ends, since both ends of the reinforcing support rod are locked with the corresponding connecting flanges through the locking nuts, the radial deflection will also occur at both ends of the reinforcing support rod, and at this time, the reinforcing support rod will compensate the deflection between both ends through the axial bending determined by .
The invention also provides an embodiment II of GILs, which is an improved scheme on the basis of the embodiment of the GIL.
Specifically, only from the difference between the second GIL embodiment and the second GIL embodiment , a backing ring is further interposed between the lock nut and the flange surface of the corresponding connecting flange, the backing ring is engaged with the flange surface in an arc shape, for example, both ends of a through hole provided in the flange surface of the connecting flange, through which the reinforcing support rod passes, are provided with spherical flares, a hemispherical protrusion is provided on the surface of the backing ring facing the connecting flange, the hemispherical protrusion is engaged with the spherical flares, or a hemispherical protrusion is provided on the surface of the backing ring facing the connecting flange, and the backing ring is abutted against the hole edge of the through hole by the hemispherical protrusion.
The modes enable the reinforced support rod to be capable of being deflected along with the adaptability when the telescopic joint compensates the radial deformation, so that the reinforced support rod is kept straight as a whole and better in conformity with the form of the telescopic joint, and the reinforced support rod is more beneficial to the reinforcement and the support of the telescopic joint.
Of course, the GIL of the present invention is not limited to the above-listed embodiments.
In other embodiments, the end of the reinforcing support rod between the short-circuit cylinder and the th corrugated pipe section can be threaded on the connecting flange of the short-circuit cylinder and locked and fixed through locking nuts on two sides of the connecting flange, or in other embodiments, the middle conductor can be in two sections or four sections and the like and can be detachably connected through inner and outer thread sections or through axially extending bolts.
Claims (10)
1, radial compensation unit for a GIL, comprising:
the telescopic joint comprises a middle straight pipe section and corrugated pipe sections respectively connected to two ends of the middle straight pipe section, and connecting flanges are respectively arranged at opposite ends of the two corrugated pipe sections;
the device comprises a short-circuit barrel body, a connecting flange is arranged at two ends of the short-circuit barrel body, a dismounting maintenance hole is arranged on the middle barrel wall, and a sealing cover is hermetically arranged on an orifice of the dismounting maintenance hole;
the short-circuit cylinder is connected to the end of the telescopic joint in a sealing mode and forms a cylinder structure together with the telescopic joint, and two ends of the cylinder structure are respectively used for connecting two adjacent sections of the GIL in a sealing mode;
the intermediate conductor is arranged in sections and detachably connected and is coaxially arranged in the cylinder structure, and two ends of the intermediate conductor are respectively used for radially deflecting buses in two adjacent pipe sections of the plug-in connection GIL.
2. The radial compensation unit for the GIL of claim 1, wherein the radial compensation unit further comprises a reinforcing support rod, and two ends of the reinforcing support rod respectively penetrate through the connecting flange between the short-circuit cylinder and the telescopic joint and the connecting flange of the telescopic joint back to the short-circuit cylinder and are connected with the corresponding connecting flanges in a locking manner through locking nuts at two sides of the connecting flanges.
3. The radial compensation unit for a GIL of claim 2, wherein the end of the reinforcing support bar near the shorting barrel passes through the connecting flange of the telescopic joint.
4. The radial compensation unit for a GIL of claim 2, wherein a grommet is interposed between the lock nut and the flange surface of the corresponding connection flange, and the grommet is fitted with the flange surface in a curved surface to enhance the deflection of the support rod adaptability when the expansion joint compensates for the radial deformation.
5. The radial compensation unit for a GIL of claim 2, wherein the outer peripheral surface of the middle straight tube section is provided with a radially extending limit bracing plate through which the reinforcing support rod passes.
6. The radial compensation unit for a GIL of any one of claims 1 to 5, , wherein the intermediate conductor is of three-segment construction, two segments at each end being provided with a spigot end for sliding engagement in a sliding contact with a busbar of the respective segment.
7. The radial compensation unit of any of claim 1-5, further comprising a flow guide row spanning the expansion joint for electrically connecting the shorting barrel and the spool piece outer barrel on the side away from the shorting barrel .
8. The radial compensation unit for a GIL of claim 7, wherein the guide rows are provided with a wave structure extending in the axial direction.
A GIL of the species , comprising:
the pipe section comprises an outer cylinder and a pipe section bus coaxially arranged in the outer cylinder;
the radial compensation unit of claim 1-9 is connected in series between two adjacent pipe sections;
the cylinder structure of the radial compensation unit is hermetically connected with the outer cylinder of the corresponding pipe section, and the middle conductor of the radial compensation unit is in radially-inclined plug-in connection with the corresponding pipe section bus.
10. The GIL of claim 9, wherein the tube segment bus bar and the intermediate conductor have sliding contacts on and the other have mating ends for mating with the sliding contacts, the sliding contacts have flared structures with fingers for electrically connecting the mating ends to the sliding contacts, the flared cavities of the flared structures forming redundant spaces for relative radial deflection of the mating ends and the sliding contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910925778.6A CN110739646A (en) | 2019-09-27 | 2019-09-27 | radial compensation units for GIL and GIL |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910925778.6A CN110739646A (en) | 2019-09-27 | 2019-09-27 | radial compensation units for GIL and GIL |
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| CN110739646A true CN110739646A (en) | 2020-01-31 |
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| CN113300319A (en) * | 2021-05-20 | 2021-08-24 | 江苏恒高电气制造有限公司 | A transmission of electricity structure for piping lane GIL |
| CN115164819A (en) * | 2022-07-25 | 2022-10-11 | 中铁二局集团建筑有限公司 | Deformation detection method and system for underground pipeline |
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| CN111745351A (en) * | 2020-06-15 | 2020-10-09 | 中国长江电力股份有限公司 | 500kV welding type GIL equipment tapping overhauling construction method |
| CN113300319A (en) * | 2021-05-20 | 2021-08-24 | 江苏恒高电气制造有限公司 | A transmission of electricity structure for piping lane GIL |
| CN115164819A (en) * | 2022-07-25 | 2022-10-11 | 中铁二局集团建筑有限公司 | Deformation detection method and system for underground pipeline |
| CN115164819B (en) * | 2022-07-25 | 2023-10-27 | 四川建力源工程技术咨询有限公司 | Deformation detection method and system for underground pipeline |
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