CN114094481B - Automatic threading adjusting device for mutual inductor - Google Patents
Automatic threading adjusting device for mutual inductor Download PDFInfo
- Publication number
- CN114094481B CN114094481B CN202111462257.5A CN202111462257A CN114094481B CN 114094481 B CN114094481 B CN 114094481B CN 202111462257 A CN202111462257 A CN 202111462257A CN 114094481 B CN114094481 B CN 114094481B
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- channel
- passageway
- hole
- fixed shell
- adjusting device
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- 230000007704 transition Effects 0.000 claims abstract description 28
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000005484 gravity Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to the technical field of auxiliary tools of power equipment and discloses an automatic threading adjusting device for a transformer, which comprises a fixed shell, wherein a left first channel, a left second channel, a right first channel and a right second channel are arranged in the fixed shell, a left lower hole and a right lower hole are formed in the bottom of the fixed shell, a left upper hole and a right upper hole are formed in the top of the fixed shell, the left second channel is communicated with the left lower hole, the left first channel is communicated with the left upper hole, the right first channel is communicated with the right lower hole, the right second channel is communicated with the right upper hole, the bottom end of the left first channel is communicated with the middle of the left second channel through an inclined left transition channel, and the top end of the right first channel is communicated with the middle of the right second channel through an inclined right transition channel.
Description
Technical Field
The invention relates to a threading auxiliary tool, in particular to an automatic threading adjusting device for a transformer.
Background
In order to reduce personal injury caused by power distribution system faults, a neutral point grounding system with small resistance is gradually adopted by a 10kV power distribution system in the city at present. The switch cabinet, the ring main unit and the like are also increasingly provided with zero-sequence current transformers at the cable heads, and part of the switch cabinet and the ring main unit lead out ground wires to lead to the situation that the zero-sequence protection of the present level is not operated and the superior protection is in a higher-level action due to the fact that the zero-sequence current transformers pass through wrong wiring, so that the fault power failure range is enlarged, the power supply reliability is greatly reduced, and meanwhile, the fault threading phenomenon exists when the zero-sequence current transformers are installed due to factors such as the influence of the working environment of the site, the quality, the working attitude and the mental condition of installers and the like.
Disclosure of Invention
Accordingly, the technical problem to be solved by the invention is to provide the automatic threading adjusting device for the transformer, which can avoid the zero sequence protection of the current level from being inactive and the superior protection from being overridden due to threading errors.
The technical scheme of the invention is realized as follows:
The invention provides an automatic threading adjusting device for a transformer, which comprises a fixing shell with an inverted concave cross section, wherein a left first channel, a left second channel, a right first channel and a right second channel are arranged in the fixing shell, the left second channel and the right first channel are both positioned on the inner side of the fixing shell, the left first channel and the right second channel are both positioned on the outer side of the inner part of the fixing shell, a left lower hole and a right lower hole are formed in the bottom of the fixing shell, a left upper hole and a right upper hole are formed in the top of the fixing shell, the left second channel is communicated with the left lower hole, the left first channel is communicated with the left upper hole, the right first channel is communicated with the right lower hole, the right second channel is communicated with the right upper hole, the bottom end of the left first channel is communicated with the middle of the left second channel through an inclined left transition channel, the top end of the right first channel is communicated with the right middle of the right transition channel, and the top end of the right first channel is sealed.
Preferably, a hanging plate for shielding the left first channel is arranged in the left transition channel, and the top of the hanging plate is movably hinged with the side wall of the left transition channel.
Preferably, the bottom of the hanger plate abuts against the ramp of the left transition channel.
Preferably, the right second channel comprises an upper channel and a lower channel, the cross section size of the upper channel is larger than that of the lower channel, a horizontal plate for shielding the upper channel is arranged in the upper channel, the bottom surface of the horizontal plate is abutted to the top surface of the lower channel, and one side of the horizontal plate is movably hinged with the side wall of the upper channel.
Preferably, a weight-increasing piece is arranged at the bottom center of the horizontal plate.
Preferably, a clamp connected with the mutual inductor in a clamping way is arranged at the bottom of the center of the fixed shell.
Compared with the prior art, the invention has the beneficial effects that:
The invention provides an automatic threading adjusting device for a transformer, wherein threading channels on the left side and the right side are set to be unidirectional channels, namely, when a cable head is led out and a ground wire penetrates in from an upper left hole, the cable head can penetrate out from a lower left hole, and when the ground wire penetrates in from the lower left hole, the cable head cannot pass through the lower left hole; when the cable head is led out of the ground wire from the lower right hole, the ground wire can be threaded from the upper right hole, and when the ground wire is threaded from the upper right hole, the ground wire cannot pass through the upper right hole, so that the threading error caused by different positions of the ground wire led out of the cable head and the zero sequence current transformer is avoided, the situation that the zero sequence protection of the present stage is not operated and the upper protection is in a override state caused by the threading error is avoided, the fault power failure range is reduced, and the power supply reliability is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only preferred embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
fig. 5 is a partial enlarged view at B in fig. 3.
In the figure, a fixed shell 1, a left first channel 21, a left second channel 22, a right first channel 31, a right second channel 32, an upper channel 321, a lower channel 322, a lower left hole 41, an upper left hole 42, a lower right hole 51, an upper right hole 52, a left transition channel 61, a right transition channel 62, a 7 hanger plate, an 8 horizontal plate, a 9 weight-increasing member, and a 10 clamp.
Detailed Description
For a better understanding of the technical content of the present invention, specific examples are provided below and the present invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 2, the invention provides an automatic threading adjusting device for a transformer, which comprises a fixed shell 1 with an inverted concave section, wherein a left first channel 21, a left second channel 22, a right first channel 31 and a right second channel 32 are arranged in the fixed shell 1, the left second channel 22 and the right first channel 31 are both positioned on the inner side of the fixed shell 1, the left first channel 21 and the right second channel 32 are both positioned on the outer side of the inside of the fixed shell 1, a left lower hole 41 and a right lower hole 51 are formed in the bottom of the fixed shell 1, a left upper hole 42 and a right upper hole 52 are formed in the top of the fixed shell 1, the left second channel 22 is communicated with the left lower hole 41, the left first channel 21 is communicated with the left upper hole 42, the right first channel 31 is communicated with the right lower hole 51, the right second channel 32 is communicated with the right upper hole 52, the bottom end of the first channel 21 is communicated with the right upper end of the right second channel 22 through an inclined transition channel 62, and the top end of the right second channel 22 is communicated with the right upper end of the second channel 32.
The fixing shell 1 is clamped on the zero-sequence current transformer from top to bottom, marks are made on the surface of the fixing shell 1, the left side of the fixing shell 1 is the inner side, the fixing shell 1 is inserted in the center of the zero-sequence current transformer, the right side of the fixing shell 1 is the outer side, the fixing shell is positioned on the outer side of the zero-sequence current transformer, and two conditions exist at the position of a cable head leading out a grounding wire at the moment:
① When the ground wire is positioned below the zero sequence current transformer, the ground wire needs to pass through the fixed shell 1 from bottom to top, if the ground wire passes through the left lower hole 41, the ground wire moves upwards along the left second channel 22, and is propped against the top end of the left second channel 22 under the guiding action of the left second channel 22, and cannot smoothly pass through the left first channel 21 outwards, which represents the wrong threading of the ground wire; if the ground wire is threaded from the lower right hole 51, the ground wire will move upward along the first right channel 31, and since the top end of the first right channel 31 is connected to the right transition channel 62, the ground wire can move into the second right channel 32 under the guiding action of the right transition channel 62, so that the ground wire can smoothly pass out from the upper right hole 52, i.e. pass through from the outside, which means that the ground wire is threaded correctly;
② When the ground wire is positioned above the zero sequence current transformer, the ground wire needs to pass through the fixed shell 1 from top to bottom, if the ground wire passes through the right upper hole 52, the ground wire moves downwards along the right second channel 32 and is propped against the bottom end of the right second channel 32 under the guiding action of the right second channel 32, and cannot smoothly pass through the right first channel 31 outwards, which represents the wrong threading of the ground wire; if the ground wire is threaded from the hole 42, the ground wire will move downward along the left first channel 21, and since the bottom end of the left first channel 21 is connected to the left transition channel 61, the ground wire can move into the left second channel 22 under the guiding action of the left transition channel 61, so that the ground wire can smoothly pass out from the left lower hole 41, i.e. pass from the inner side, which means that the ground wire is threaded correctly.
The device can avoid the threading error caused by the difference of the positions of the ground wire led out by the cable head and the zero sequence current transformer, and simultaneously can avoid the situation that the zero sequence protection of the present level is not operated and the upper level protection is out of order due to the threading error, thereby reducing the fault power failure range and greatly improving the power supply reliability.
Referring to fig. 3 to 5, a hanger plate 7 for shielding the left first channel 21 is disposed in the left transition channel 61, and the top of the hanger plate 7 is movably hinged with the side wall of the left transition channel 61.
The bottom of the hanger plate 7 abuts against the ramp of the left transition channel 61. After the fixing shell 1 is clamped on the zero-sequence current transformer, the hanging plate 7 hangs downwards under the action of gravity to seal the left transition channel 61, and the left threading channel is arranged to be capable of only penetrating downwards from top to bottom and not penetrating upwards from bottom to top. When the ground wire passes downwards from the left upper hole 42, the ground wire contacts the hanger plate 7 after entering the left transition channel 61 and pushes the hanger plate 7 to turn anticlockwise, so that the left transition channel 61 is opened, smoothly enters the left first channel 21 and passes outwards from the left lower hole 41; when the ground wire upwards passes through the left lower hole 41, even if the ground wire inadvertently enters the left transition channel 61 due to the bending effect of the ground wire, the ground wire can be contacted with the hanger plate 7, and the hanger plate 7 cannot turn clockwise under the ramp limitation of the left transition channel 61, so that the ground wire is always prevented from upwards passing out, and the threading accuracy of the left threading channel is further improved.
The right second channel 32 comprises an upper channel 321 and a lower channel 322, the cross section size of the upper channel 321 is larger than that of the lower channel 322, a horizontal plate 8 for shielding the upper channel 321 is arranged in the upper channel 321, the bottom surface of the horizontal plate 8 is abutted to the top surface of the lower channel 322, and one side of the horizontal plate 8 is movably hinged to the side wall of the upper channel 321. The horizontal plate 8 covers the top of the lower channel 322 under the action of gravity to close the lower channel 322, and the threading channel on the right side is arranged to be capable of only threading from bottom to top and not threading from top to bottom. When the ground wire passes through the right lower hole 51 upwards, the ground wire is brought into the right second channel 32 after entering the right transition channel 62, contacts with the bottom of the horizontal plate 8, pushes the horizontal plate 8 to turn upwards, thereby opening the right second channel 32 and smoothly passing out of the right upper hole 52; similarly, when the ground wire passes through the upper right hole 52 downwards, the ground wire can be abutted with the top of the horizontal plate 8, the horizontal plate 8 can not be opened downwards under the limiting effect of the lower channel 322, the ground wire is prevented from passing through all the time, and the threading accuracy of the right threading channel is further improved.
The bottom center of horizontal plate 8 is equipped with weight-increasing piece 9, and at the in-process of removing or carrying fixed shell 1, horizontal plate 8 can be the inner wall butt of vertical state and right side second passageway 32, through adding weight-increasing piece 9 of establishing on horizontal plate 8, makes horizontal plate 8 can independently overturn downwards under the action of gravity, avoids horizontal plate 8 to erect at right side second passageway 32 for a long time and causes the drawback of protection inefficacy.
The center bottom of the fixed shell 1 is provided with the clamp 10 which is clamped with the transformer, the fixed shell 1 can be stably clamped on the zero sequence current transformer through the clamp 10, and the fixed shell 1 is prevented from overturning when the clamping is unstable to cause threading, so that threading work is affected.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. The utility model provides a mutual-inductor threading automatic regulating apparatus, its characterized in that includes that the cross-section is the fixed shell of "concave" style of calligraphy, the inside of fixed shell is equipped with left side first passageway, left side second passageway, right side first passageway and right side second passageway, left side second passageway and right side first passageway all are located the inside of fixed shell inside, left side first passageway and right side second passageway all are located the outside of fixed shell inside, left side lower hole and right lower hole have been seted up to the bottom of fixed shell, upper left hole and right upper hole have been seted up at the top of fixed shell, left side second passageway with left side lower hole communicates with each other, left side first passageway with upper left hole communicates with each other, right side first passageway with right side lower hole communicates with each other, right side second passageway communicates with each other with the upper right hole, the bottom of left side first passageway of left side is through the left side transition passageway of slope with the middle part of left side second passageway communicates with each other, right side first passageway of right side top through the transition passageway of slope.
2. The automatic threading adjusting device for the transformer according to claim 1, wherein a hanging plate for shielding the left first passage is arranged in the left transition passage, and the top of the hanging plate is movably hinged with the side wall of the left transition passage.
3. The automatic transformer threading adjusting device according to claim 2, wherein the bottom of the hanger plate abuts against the ramp of the left transition channel.
4. The automatic threading adjusting device for the transformer according to claim 1, wherein the right second channel comprises an upper channel and a lower channel, the cross section of the upper channel is larger than that of the lower channel, a horizontal plate for shielding the upper channel is arranged in the upper channel, the bottom surface of the horizontal plate is abutted to the top surface of the lower channel, and one side of the horizontal plate is movably hinged with the side wall of the upper channel.
5. The automatic threading adjusting device for the transformer according to claim 4, wherein a weight-increasing member is arranged at the bottom center of the horizontal plate.
6. The automatic threading adjusting device for the transformer according to claim 1, wherein a clamp which is clamped with the transformer is arranged at the bottom of the center of the fixing shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462257.5A CN114094481B (en) | 2021-12-02 | 2021-12-02 | Automatic threading adjusting device for mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462257.5A CN114094481B (en) | 2021-12-02 | 2021-12-02 | Automatic threading adjusting device for mutual inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114094481A CN114094481A (en) | 2022-02-25 |
| CN114094481B true CN114094481B (en) | 2024-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111462257.5A Active CN114094481B (en) | 2021-12-02 | 2021-12-02 | Automatic threading adjusting device for mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114094481B (en) |
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| DE2812768A1 (en) * | 1978-03-23 | 1979-09-27 | Stettner & Co | ELECTRICAL COMPONENT WITH CONNECTING WIRES FOR PLUGGING INTO HOLES IN A CIRCUIT BOARD |
| CA1118060A (en) * | 1979-07-10 | 1982-02-09 | Western Canada Steel Limited | Electrical ground rod and lead wire assembly |
| US4728304A (en) * | 1985-04-02 | 1988-03-01 | Micro Stamping Corp. | Low insertion force lead socket insert |
| US4738633A (en) * | 1985-04-15 | 1988-04-19 | Walter Rose Gmbh & Co., Kg | Device for making an electrically conductive contact to an insulated cable lead |
| JP2004128226A (en) * | 2002-10-02 | 2004-04-22 | Sanken Electric Co Ltd | Tool and method for wire bonding |
| JP2009109437A (en) * | 2007-10-31 | 2009-05-21 | Tamura Seisakusho Co Ltd | Fixation structure and fixation unit of sensor element having lead |
| CN105551728A (en) * | 2016-01-15 | 2016-05-04 | 胡小青 | Zero-sequence current transformer of overhead line |
| CN207868005U (en) * | 2018-02-07 | 2018-09-14 | 天津光信光电科技有限公司 | A kind of band wire lead slot shell structure for zero sequence current mutual inductor |
| CN208093353U (en) * | 2018-04-24 | 2018-11-13 | 常州欧瑞电气股份有限公司 | A kind of zero sequence current mutual inductor shell |
| CN112688268A (en) * | 2020-12-21 | 2021-04-20 | 海南电网有限责任公司三亚供电局 | Flame-retardant explosion-proof device for intermediate joint |
-
2021
- 2021-12-02 CN CN202111462257.5A patent/CN114094481B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1446145A (en) * | 1964-08-20 | 1966-07-15 | Attachment device for removably securing the free ends of a lace | |
| DE2812768A1 (en) * | 1978-03-23 | 1979-09-27 | Stettner & Co | ELECTRICAL COMPONENT WITH CONNECTING WIRES FOR PLUGGING INTO HOLES IN A CIRCUIT BOARD |
| CA1118060A (en) * | 1979-07-10 | 1982-02-09 | Western Canada Steel Limited | Electrical ground rod and lead wire assembly |
| US4728304A (en) * | 1985-04-02 | 1988-03-01 | Micro Stamping Corp. | Low insertion force lead socket insert |
| US4738633A (en) * | 1985-04-15 | 1988-04-19 | Walter Rose Gmbh & Co., Kg | Device for making an electrically conductive contact to an insulated cable lead |
| JP2004128226A (en) * | 2002-10-02 | 2004-04-22 | Sanken Electric Co Ltd | Tool and method for wire bonding |
| JP2009109437A (en) * | 2007-10-31 | 2009-05-21 | Tamura Seisakusho Co Ltd | Fixation structure and fixation unit of sensor element having lead |
| CN105551728A (en) * | 2016-01-15 | 2016-05-04 | 胡小青 | Zero-sequence current transformer of overhead line |
| CN207868005U (en) * | 2018-02-07 | 2018-09-14 | 天津光信光电科技有限公司 | A kind of band wire lead slot shell structure for zero sequence current mutual inductor |
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| Publication number | Publication date |
|---|---|
| CN114094481A (en) | 2022-02-25 |
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