CN116859195A - Three-phase integrated SF6 sleeve test device - Google Patents
Three-phase integrated SF6 sleeve test device Download PDFInfo
- Publication number
- CN116859195A CN116859195A CN202310830392.3A CN202310830392A CN116859195A CN 116859195 A CN116859195 A CN 116859195A CN 202310830392 A CN202310830392 A CN 202310830392A CN 116859195 A CN116859195 A CN 116859195A
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- CN
- China
- Prior art keywords
- flange
- sleeve
- oil
- sub
- test device
- 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.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 229910018503 SF6 Inorganic materials 0.000 claims description 29
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009422 external insulation Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1245—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/16—Construction of testing vessels; Electrodes therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Power Engineering (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention provides a three-phase integrated SF6 sleeve test device. The upper part of the telescopic cylinder body and the lower part of the cylinder body are arranged at a preset angle; the first end of the oil-SF 6 sleeve is arranged in the telescopic cylinder body, and the first end of the oil-SF 6 sleeve is connected with the first end of the oil-air sleeve arranged in the telescopic cylinder body through the connecting component. Through the SF6 sleeve test device with three phases integrated, as the upper part of the telescopic cylinder body and the lower part of the cylinder body are arranged at a preset angle, when each phase of the transformer is connected with the sub-test device, the upper part of the telescopic cylinder body of each phase of the connected sub-test device faces different directions, so that the oil-air sleeve connected with the three phases keeps the required insulation distance, and further the test requirement is met.
Description
Technical Field
The invention relates to the field of transformers, in particular to a three-phase integrated SF6 sleeve test device.
Background
The oil-SF 6 (sulfur hexafluoride) sleeve is a part of a large-scale power transformer product required during operation, and in order to better ensure the safety and reliability of the power transformer during operation, the related parts are generally tested before the operation of the power transformer, namely, the oil-SF 6 sleeve is adopted for testing.
However, since the oil-SF 6 bushing cannot meet the external insulation requirement in the air, that is, the insulation distance between adjacent two phases is insufficient, a test device capable of meeting the three-phase integrated SF6 bushing transformer test is urgently needed.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a three-phase integrated SF6 sleeve test device, which aims to solve the problem that the existing oil-SF 6 sleeve cannot meet the external insulation requirement in the air.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
an integrated three-phase SF6 cannula test device comprising: the sub-test devices are used for being connected with any one of the transformers;
the subtest device includes: a telescoping cylinder, an oil-SF 6 sleeve, an oil-air sleeve, and a connector assembly;
the upper part of the telescopic cylinder body and the lower part of the cylinder body are arranged at a preset angle;
the first end of the oil-SF 6 sleeve is arranged in the telescopic cylinder, and the first end of the oil-SF 6 sleeve is connected with the first end of the oil-air sleeve arranged in the telescopic cylinder through the connecting component;
an insulating medium is arranged in the telescopic shell.
Preferably, the connection assembly includes: the first pressure equalizing ball, the second pressure equalizing ball and the connecting piece;
the first end of the connecting piece is connected with the first end of the oil-air sleeve, and the second end of the connecting piece is connected with the first end of the oil-SF 6 sleeve;
the first equalizing ball is arranged at the first end of the connecting piece;
the second equalizing ball is arranged at the second end of the connecting piece.
Preferably, the connecting piece is made of soft copper stranded wires.
Preferably, the connection assembly further comprises: a first fixing plate and a second fixing plate;
the first fixing plate is arranged on the first equalizing ball and is fixed on the connecting piece through a screw;
the second fixed plate is arranged on the second equalizing ball and is fixed on the connecting piece through a screw.
Preferably, the insulating medium is sulfur hexafluoride.
Preferably, the telescopic cylinder comprises: the device comprises a first sub-cylinder, a first flange, a second flange, a third flange, a fourth flange, a first corrugated pipe, a second corrugated pipe, an elbow pipe and a second sub-cylinder;
one end of the first sub-cylinder is connected with one end of the first corrugated pipe through a first flange, and the other end of the first sub-cylinder is in sealing fit with the oil-SF 6 sleeve;
the other end of the first corrugated pipe is connected with one end of the bent pipe through a second flange;
the other end of the bent pipe is connected with one end of the second corrugated pipe through a third flange;
the other end of the second corrugated pipe is connected with one end of the second sub-cylinder through a fourth flange;
the other end of the second sub-cylinder is in sealing fit with the oil-air sleeve.
Preferably, the first flange and the second flange are connected by a plurality of bolts, and the bolts are used for adjusting the distance between the first flange and the second flange.
Preferably, the subtest device further comprises: and the bracket is used for supporting the telescopic cylinder.
Preferably, the method further comprises: and the channel steel is used for fixing the plurality of sub-test devices.
Preferably, the method further comprises: and the steel wire rope is used for fixing the plurality of sub-test devices.
Based on the three-phase integrated SF6 sleeve test device provided by the invention, the upper part of the telescopic cylinder body and the lower part of the cylinder body are arranged at a preset angle; the first end of the oil-SF 6 sleeve is arranged in the telescopic cylinder body, and the first end of the oil-SF 6 sleeve is connected with the first end of the oil-air sleeve arranged in the telescopic cylinder body through the connecting component. Through the SF6 sleeve test device with three phases integrated, as the upper part of the telescopic cylinder body and the lower part of the cylinder body are arranged at a preset angle, when each phase of the transformer is connected with the sub-test device, the upper part of the telescopic cylinder body of each phase of the connected sub-test device faces different directions, so that the oil-air sleeve connected with the three phases keeps the required insulation distance, and further the test requirement is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a three-phase integrated SF6 sleeve test device provided by an embodiment of the invention;
FIG. 2 is a partial enlarged view of a three-phase integrated SF6 sleeve test device provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of a bracket according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an expansion cylinder and internal connection thereof according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second pressure equalizing ball according to an embodiment of the present invention;
FIG. 6 is a schematic view illustrating installation of a first bellows according to an embodiment of the present invention;
FIG. 7 is a top view of a first sub-cartridge according to an embodiment of the present invention;
fig. 8 is a top view of a first pressure equalizing ball according to an embodiment of the present invention.
The telescopic cylinder body 1, a first sub cylinder body 11, a first flange 12, a second flange 13, a first corrugated pipe 14, a second corrugated pipe 15, an elbow pipe 16, a second sub cylinder body 17 and a bolt 18; an oil-SF 6 casing 2; an oil-air sleeve 3; a first pressure equalizing ball 41, a second pressure equalizing ball 42, a connecting piece 43, a first fixing plate 44, a second fixing plate 45; a bracket 5; channel steel 6; a wire rope 7; and a transformer 8.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a three-phase integrated SF6 sleeve test device, referring to fig. 1 to 8, the three-phase integrated SF6 sleeve test device comprises: the sub-test devices are used for being connected with any one of the transformers 8;
the subtest device includes: a telescoping cylinder 1, an oil-SF 6 cannula 2, an oil-air cannula 3 and a connector 43 assembly;
the upper part of the telescopic cylinder body 1 and the lower part of the cylinder body are arranged at a preset angle;
the first end of the oil-SF 6 sleeve 2 is arranged in the telescopic cylinder body 1, and the first end of the oil-SF 6 sleeve 2 is connected with the first end of the oil-air sleeve 3 arranged in the telescopic cylinder body 1 through a connecting component;
an insulating medium is arranged in the telescopic shell.
It should be noted that, the upper portion of the telescopic cylinder 1 and the lower portion of the cylinder are arranged at a preset angle, so that when the three-phase transformer 8 is connected, each connected sub-test device can extend out towards different directions (as shown in fig. 2), the distance between the oil-air sleeves 3 connected between each two phases is increased, and the insulation distance between each connected sub-test device is further increased.
It should also be noted that by providing an insulating medium in the telescopic housing, the spacing of each connected oil-SF 6 bushing 2 is ensured.
The embodiment of the invention is characterized in that the upper part of the telescopic cylinder body 1 and the lower part of the cylinder body are arranged at a preset angle; the first end of the oil-SF 6 sleeve 2 is arranged in the telescopic cylinder body 1, and the first end of the oil-SF 6 sleeve 2 is connected with the first end of the oil-air sleeve 3 arranged in the telescopic cylinder body 1 through a connecting component. Through the above disclosed three-phase integrated SF6 sleeve test device, the upper part of the telescopic cylinder body 1 and the lower part of the cylinder body are arranged at a preset angle, so that when each phase of the transformer 8 is connected with the sub-test device, the upper part of the telescopic cylinder body 1 of each phase of the connected sub-test device faces different directions, and the three-phase connected oil-air sleeve 3 is kept at a required insulation distance, so that the test requirement is met.
Specifically, the coupling assembling includes: a first pressure equalizing ball 41, a second pressure equalizing ball 42 and a connecting piece 43;
a first end of the connection 43 is connected to a first end of the oil-air sleeve 3 and a second end of the connection 43 is connected to a first end of the oil-SF 6 sleeve 2;
the first equalizing ball 41 is disposed at a first end of the connecting member 43;
the second pressure equalizing ball 42 is arranged at a second end of the connecting piece 43.
It should be noted that, the first end of the connecting piece 43 is connected to the first end of the oil-air sleeve 3, the second end of the connecting piece 43 is connected to the first end of the oil-SF 6 sleeve 2, the first equalizing ball 41 is disposed at the first end of the connecting piece 43, the second equalizing ball 42 is disposed at the second end of the connecting piece 43, and the first equalizing ball 41 and the second equalizing ball 42 can avoid discharging the telescopic cylinder 1 by the connecting wire.
Further, the connection 43 is made of soft copper strands.
It should be noted that, the connection piece 43 is made of soft copper stranded wires, which not only can be matched with the bending of the telescopic cylinder 1, but also can ensure the connection between the oil-SF 6 sleeve 2 and the oil-air sleeve 3.
Further, the coupling assembling still includes: a first fixing plate 44 and a second fixing plate 45;
the first fixing plate 44 is provided on the first pressure equalizing ball 41, and the first fixing plate 44 is fixed to the connecting piece 43 by a screw;
the second fixing plate 45 is provided to the second pressure equalizing ball 42, and the second fixing plate 45 is fixed to the connecting member 43 by screws.
By providing the first fixing plate 44 and the second fixing plate 45 and providing the first fixing plate 44 to the first equalizing ball 41, the first fixing plate 44 is fixed to the connecting member 43 by a screw, so that the first equalizing ball 41 can be fixed and the discharge of the connecting wire to the first equalizing ball 41 can be avoided; the second fixing plate 45 is disposed on the second equalizing ball 42, and the second fixing plate 45 is fixed to the connecting member 43 by a screw, so that the second equalizing ball 42 can be fixed, and the second equalizing ball 42 can be prevented from being discharged by the connecting wire.
Specifically, the insulating medium is sulfur hexafluoride.
It should be noted that, setting the insulating medium as sulfur hexafluoride can further improve the insulating capability of the telescopic cylinder 1 connected between each phase, so as to realize the test of the high-voltage transformer 8 (such as 750 KV).
It should be further noted that the insulating medium may be sulfur hexafluoride or transformer oil, and those skilled in the art may select according to requirements.
Specifically, the telescopic cylinder 1 includes: a first sub-cylinder 11, a first flange 12, a second flange 13, a third flange, a fourth flange, a first corrugated pipe 14, a second corrugated pipe 15, an elbow 16 and a second sub-cylinder 17;
one end of the first sub-cylinder 11 is connected with one end of a first corrugated pipe 14 through a first flange 12, and the other end of the first sub-cylinder 11 is in sealing fit with the oil-SF 6 sleeve 2;
the other end of the first corrugated pipe 14 is connected with one end of an elbow pipe 16 through a second flange 13;
the other end of the bent pipe 16 is connected with one end of a second corrugated pipe 15 through a third flange;
the other end of the second corrugated pipe 15 is connected with one end of a second sub cylinder 17 through a fourth flange;
the other end of the second sub-cylinder 17 is in sealing engagement with the oil-air sleeve 3.
One end of the first sub-cylinder 11 is connected with one end of a first corrugated pipe 14 through a first flange 12, and the other end of the first sub-cylinder 11 is in sealing fit with the oil-SF 6 sleeve 2; the other end of the first corrugated pipe 14 is connected with one end of an elbow pipe 16 through a second flange 13; the other end of the bent pipe 16 is connected with one end of a second corrugated pipe 15 through a third flange; the other end of the second corrugated pipe 15 is connected with one end of a second sub cylinder 17 through a fourth flange; the other end of the second sub-cylinder 17 is in sealing fit with the oil-air sleeve 3, the first corrugated pipe 14 can stretch and retract according to the length of the oil-SF 6 sleeve 2 to meet test requirements, and the second corrugated pipe 15 can stretch and retract according to the length of the oil-air sleeve 3 to meet test requirements.
Specifically, the first flange 12 and the second flange 13, and the third flange and the fourth flange are all connected by a plurality of bolts 18.
It should be noted that, the first flange 12 is connected with the second flange 13 through a plurality of bolts 18, and then the distance between the first flange 12 and the second flange 13 can be adjusted through the bolts 18, so as to realize the adjustment of the length of the first corrugated pipe 14, and the first corrugated pipe 14 keeps the current length, so that the deformation shortening of the first corrugated pipe 14 due to the gravity is avoided; the third flange and the fourth flange are connected through a plurality of bolts 18, and then the distance between the third flange and the fourth flange can be adjusted through the bolts 18, so that the length of the second corrugated pipe 15 can be adjusted, the current length of the second corrugated pipe 15 can be kept, and the deformation shortening of the second corrugated pipe 15 due to gravity can be avoided.
It should be noted that the third flange and the fourth flange are not shown in the drawings, and reference may be made to schematic diagrams of the first flange 12 and the second flange 13.
By providing the channel steel 6 for fixing the plurality of sub-test devices, the plurality of sub-test devices can be simultaneously fixed, and the plurality of sub-test devices can be kept at a desired insulation distance.
Further, integrative SF6 sleeve pipe test device of three-phase still includes: a wire rope 7 for fixing a plurality of sub-test devices.
The plurality of sub-test devices can be further simultaneously fixed by providing the wire rope 7 for fixing the plurality of sub-test devices.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An integrative SF6 sleeve pipe test device of three-phase, characterized in that includes: the sub-test devices are used for being connected with any one of the transformers;
the subtest device includes: a telescoping cylinder, an oil-SF 6 sleeve, an oil-air sleeve, and a connector assembly;
the upper part of the telescopic cylinder body and the lower part of the cylinder body are arranged at a preset angle;
the first end of the oil-SF 6 sleeve is arranged in the telescopic cylinder, and the first end of the oil-SF 6 sleeve is connected with the first end of the oil-air sleeve arranged in the telescopic cylinder through the connecting component;
an insulating medium is arranged in the telescopic shell.
2. The three-phase integrated SF6 cannula test device of claim 1, wherein the connection assembly comprises: the first pressure equalizing ball, the second pressure equalizing ball and the connecting piece;
the first end of the connecting piece is connected with the first end of the oil-air sleeve, and the second end of the connecting piece is connected with the first end of the oil-SF 6 sleeve;
the first equalizing ball is arranged at the first end of the connecting piece;
the second equalizing ball is arranged at the second end of the connecting piece.
3. The three-phase integrated SF6 bushing test device of claim 2, wherein the connector is made of soft copper strands.
4. The three-phase integrated SF6 cannula test device of claim 2, wherein the connection assembly further comprises: a first fixing plate and a second fixing plate;
the first fixing plate is arranged on the first equalizing ball and is fixed on the connecting piece through a screw;
the second fixing plate is arranged on the second equalizing ball and is fixed on the connecting piece through a screw.
5. The three-phase integrated SF6 bushing test device of claim 1, wherein the insulating medium is sulfur hexafluoride.
6. The three-phase integrated SF6 cannula test device of claim 1, wherein the telescoping cylinder comprises: the device comprises a first sub-cylinder, a first flange, a second flange, a third flange, a fourth flange, a first corrugated pipe, a second corrugated pipe, an elbow pipe and a second sub-cylinder;
one end of the first sub-cylinder is connected with one end of the first corrugated pipe through the first flange, and the other end of the first sub-cylinder is in sealing fit with the oil-SF 6 sleeve;
the other end of the first corrugated pipe is connected with one end of the bent pipe through the second flange;
the other end of the bent pipe is connected with one end of the second corrugated pipe through the third flange;
the other end of the second corrugated pipe is connected with one end of the second sub-cylinder through the fourth flange;
the other end of the second sub-cylinder is in sealing fit with the oil-air sleeve.
7. The three-phase integrated SF6 bushing test device of claim 6, wherein the first flange and the second flange are connected by a plurality of bolts, the bolts being used to adjust the spacing of the first flange and the second flange.
8. The three-phase integrated SF6 cannula test device of claim 1, wherein the sub-test device further comprises: and the bracket is used for supporting the telescopic cylinder body.
9. The three-phase integrated SF6 cannula test device of claim 1, further comprising: and the channel steel is used for fixing a plurality of the sub-test devices.
10. The three-phase integrated SF6 cannula test device of claim 9, further comprising: and the steel wire rope is used for fixing a plurality of the sub-test devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310830392.3A CN116859195A (en) | 2023-07-07 | 2023-07-07 | Three-phase integrated SF6 sleeve test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310830392.3A CN116859195A (en) | 2023-07-07 | 2023-07-07 | Three-phase integrated SF6 sleeve test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116859195A true CN116859195A (en) | 2023-10-10 |
Family
ID=88228109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310830392.3A Pending CN116859195A (en) | 2023-07-07 | 2023-07-07 | Three-phase integrated SF6 sleeve test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116859195A (en) |
-
2023
- 2023-07-07 CN CN202310830392.3A patent/CN116859195A/en active Pending
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