CN114094481A - Mutual inductor threading automatic regulating apparatus - Google Patents
Mutual inductor threading automatic regulating apparatus Download PDFInfo
- Publication number
- CN114094481A CN114094481A CN202111462257.5A CN202111462257A CN114094481A CN 114094481 A CN114094481 A CN 114094481A CN 202111462257 A CN202111462257 A CN 202111462257A CN 114094481 A CN114094481 A CN 114094481A
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- channel
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- communicated
- fixed shell
- mutual inductor
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- 230000001105 regulatory effect Effects 0.000 title description 2
- 230000007704 transition Effects 0.000 claims abstract description 29
- 230000009471 action Effects 0.000 description 10
- 230000005484 gravity Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000007306 turnover Effects 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
- 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
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- 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
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- 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 of a mutual inductor, 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 inside the fixed shell, a left lower hole and a right lower hole are formed in the bottom of the fixed shell, an upper left hole and an upper right hole are formed in the top of the fixed shell, the left first channel is communicated with the left lower hole, the left second channel is communicated with the upper left hole, the right first channel is communicated with the right lower hole, the right second channel is communicated with the upper right hole, the bottom end of the left second channel is communicated with the middle of the left first 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 mutual inductor.
Background
In order to reduce personal casualties caused by power distribution system faults, a neutral point grounding system through a small resistor is gradually adopted in the current urban 10kV power distribution system. The zero sequence current transformers are increasingly assembled at cable heads of switch cabinets, ring main units and the like, and grounding wires led out from cable heads of part of switch cabinets and ring main units cause the conditions that the zero sequence protection of the current level does not act and the superior protection acts beyond the level due to the fact that the grounding wires pass through the zero sequence current transformers to be connected in a wrong mode, so that the fault power failure range is enlarged, the power supply reliability is greatly reduced, and meanwhile, the phenomenon of wrong threading during installation of the zero sequence current transformers exists due to the factors such as the influence of the working environment of a site, the quality of installation personnel, the working attitude, the mental condition and the like.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide the automatic transformer threading adjusting device which can avoid the phenomena that the zero sequence protection of the current level does not act and the superior protection overrides the action due to threading errors.
The technical scheme of the invention is realized as follows:
the invention provides an automatic threading adjusting device of a mutual inductor, which comprises a fixed shell with an inverted concave-shaped cross section, wherein a left first channel, a left second channel, a right first channel and a right second channel are arranged in the fixed shell, the left first channel and the right first channel are positioned on the inner side of the fixed shell, the left second channel and the right second channel are positioned on the outer side of the inner part of 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 first channel is communicated with the left lower hole, the left second 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 second channel is communicated with the middle part of the left first channel through an inclined left transition channel, the top end of the right first channel is communicated with the middle part of the right second channel through an inclined right transition channel.
Preferably, a hanging plate for shielding the first channel on the left side is arranged in the transition channel on the left side, and the top of the hanging plate is movably hinged with the side wall of the transition channel on the left side.
Preferably, the bottom of the hanger plate abuts the ramp of the left side transition passage.
Preferably, 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 against the top surface of the lower channel, and one side of the horizontal plate is movably hinged to the side wall of the upper channel.
Preferably, the bottom center of the horizontal plate is provided with a weight increasing piece.
Preferably, the bottom of the center of the fixed shell is provided with a clamp clamped with the mutual inductor.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an automatic threading adjusting device of a mutual inductor, wherein threading channels on the left side and the right side are set as one-way channels, namely, when a cable head leads out a grounding wire to penetrate through an upper left hole, the grounding wire can penetrate through a lower left hole, and when the grounding wire penetrates through the lower left hole, the grounding wire cannot pass through the lower left hole; when the cable head leads out the grounding wire to penetrate through the right lower hole, the grounding wire can penetrate through the right upper hole, and when the grounding wire penetrates through the right upper hole, the grounding wire cannot pass through the right upper hole, so that threading errors caused by different positions of the grounding wire led out from the cable head and the zero sequence current transformer are avoided, the conditions that the zero sequence protection of the current level does not act and the higher level protection acts in an overriding manner due to the threading errors can be 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 in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
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 partially enlarged view of fig. 3 at B.
In the figure, 1 is a fixed shell, 21 is a left first channel, 22 is a left second channel, 31 is a right first channel, 32 is a right second channel, 321 is an upper channel, 322 is a lower channel, 41 is a left lower hole, 42 is an upper left hole, 51 is a lower right hole, 52 is an upper right hole, 61 is a left transition channel, 62 is a right transition channel, 7 is a hanging plate, 8 is a horizontal plate, 9 is a weight increasing piece, and 10 is a clamp.
Detailed Description
In order to better understand the technical content of the invention, specific embodiments are provided below, and the 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 mutual inductor, comprising a fixing shell 1 with an inverted concave cross 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 inside the fixing shell 1, the left first channel 21 and the right first channel 31 are both positioned inside the fixing shell 1, the left second channel 22 and the right second channel 32 are both positioned outside the fixing shell 1, a left lower hole 41 and a right lower hole 51 are opened at the bottom of the fixing shell 1, an upper left hole 42 and an upper right hole 52 are opened at the top of the fixing shell 1, the left first channel 21 is communicated with the lower left hole 41, the left second channel 22 is communicated with the upper left hole 42, the right first channel 31 is communicated with the lower right hole 51, and the right second channel 32 is communicated with the upper right hole 52, the bottom end of the left second channel 22 communicates with the middle of the left first channel 21 through an inclined left transition channel 61, and the top end of the right first channel 31 communicates with the middle of the right second channel 32 through an inclined right transition channel 62.
With set casing 1 from last card down on zero sequence current transformer, the mark is done on the 1 surface of set casing, and 1 left side of set casing is inboard, alternates at zero sequence current transformer's center, and 1 right side of set casing is the outside, is located zero sequence current transformer's the outside, and there are two kinds of circumstances in the position that the earth connection was drawn forth to the cable head this moment:
firstly, when the grounding wire is positioned below the zero sequence current transformer, the grounding wire needs to penetrate through the fixed shell 1 from bottom to top, if the grounding wire penetrates through the left lower hole 41, the grounding wire can move upwards along the left first channel 21 and pushes against the top end of the left first channel 21 under the guiding action of the left first channel 21, and cannot smoothly penetrate out of the left second channel 22, so that the wrong threading of the grounding wire is represented; if the grounding wire is threaded through the lower right hole 51, the grounding wire will move upwards along the right first channel 31, and because the top end of the right first channel 31 is connected with the right transition channel 62, the grounding wire can move into the right second channel 32 under the guiding action of the right transition channel 62, and then smoothly passes through the upper right hole 52, namely passes through the outside, which represents that the grounding wire is threaded correctly;
secondly, when the grounding wire is positioned above the zero sequence current transformer, the grounding wire needs to penetrate through the fixed shell 1 from top to bottom, if the grounding wire penetrates through the upper right hole 52, the grounding wire can move downwards along the right second channel 32 and pushes the grounding wire to the bottom end of the right second channel 32 under the guiding action of the right second channel 32, the grounding wire cannot smoothly penetrate out of the right first channel 31, and the wrong threading of the grounding wire is represented; if the ground wire is threaded through the hole 42 on the upper left, the ground wire will move downwards along the second channel 22 on the left side, and since the bottom end of the second channel 22 on the left side is connected with the transition channel 61 on the left side, the ground wire can move into the first channel 21 on the left side under the guiding action of the transition channel 61 on the left side, and thus smoothly pass through the hole 52 on the upper right side, i.e. pass through the inner side, which represents that the ground wire is threaded correctly.
The device can avoid threading errors caused by different positions of a grounding wire led out from a cable head and the zero sequence current transformer, and can avoid the conditions of no action of the zero sequence protection of the current level and override action of the upper level protection caused by the threading errors, thereby reducing the fault power failure range and greatly improving the power supply reliability.
Referring to fig. 3 to 5, a hanging plate 7 for shielding the left first passage 21 is disposed in the left transition passage 61, and the top of the hanging plate 7 is movably hinged to the side wall of the left transition passage 61.
The bottom of the hanger plate 7 abuts 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 is hung downwards under the action of gravity to seal the left transition passage 61, and the left threading passage is only threaded downwards from top to bottom and cannot be threaded upwards from bottom to top. When the ground wire penetrates downwards from the upper left hole 42, the ground wire can contact the hanging plate 7 after entering the left transition channel 61 and pushes the hanging plate 7 to turn over anticlockwise, so that the left transition channel 61 is opened, the ground wire can smoothly enter the left first channel 21 and penetrate outwards from the lower left hole 41; when the grounding wire upwards penetrates through the lower left hole 41, even if the grounding wire carelessly enters the left transition channel 61 due to the bending effect of the grounding wire, the grounding wire can also be in contact with the hanging plate 7, and the hanging plate 7 cannot turn clockwise under the limitation of the ramp of the left transition channel 61, so that the grounding wire is always prevented from upwards penetrating 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 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 against the top surface of the lower channel 322, and one side of the horizontal plate 8 is movably hinged with the side wall of the upper channel 321. The horizontal plate 8 covers the top of the lower passage 322 under the action of gravity to seal the lower passage 322, and the threading passage on the right side is only arranged to be penetrated from bottom to top and cannot be penetrated from top to bottom. When the ground wire penetrates upwards from the lower right hole 51, the ground wire is brought into the second right channel 32 after entering the right transition channel 62, contacts with the bottom of the horizontal plate 8 and pushes the horizontal plate 8 to turn upwards, so that the second right channel 32 is opened and smoothly penetrates outwards from the upper right hole 52; similarly, when the earth connection from upper right hole 52 downward wears, the earth connection can with the top butt of horizontal plate 8, under the restriction of lower passageway 322, horizontal plate 8 can't open downwards, prevents all the time that the earth connection from passing through, has further improved the threading accuracy of right side threading passageway.
The bottom center of horizontal plate 8 is equipped with and increases heavy piece 9, and at the in-process that removes or carry set casing 1, horizontal plate 8 can be the inner wall butt of vertical state and right side second passageway 32, through increasing to establish on horizontal plate 8 and increase heavy piece 9, makes horizontal plate 8 can independently overturn downwards under the action of gravity, avoids horizontal plate 8 to erect for a long time and causes the drawback of protection inefficacy at right side second passageway 32.
The center bottom of set casing 1 is equipped with the anchor clamps 10 with the mutual-inductor joint, can be with set casing 1 joint on zero sequence current transformer steadily through anchor clamps 10, prevents that the unstable upset of set casing 1 when causing the threading of joint from influencing threading work.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. An automatic threading adjusting device of a mutual inductor is characterized by comprising a fixed shell with an inverted concave-shaped cross section, wherein a left first channel, a left second channel, a right first channel and a right second channel are arranged in the fixed shell, the left first channel and the right first channel are both positioned on the inner side of the fixed shell, the left second channel and the right second channel are both positioned on the outer side of the inner part of 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 first channel is communicated with the left lower hole, the left second 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 second channel is communicated with the middle part of the left first channel through an inclined left transition channel, the top end of the right first channel is communicated with the middle part of the right second channel through an inclined right transition channel.
2. The automatic threading adjustment device for the mutual inductor as claimed in claim 1, wherein a hanging plate for shielding the first left-side passage is arranged in the left-side transition passage, and the top of the hanging plate is movably hinged to the side wall of the left-side transition passage.
3. The automatic mutual inductor threading adjustment device of claim 2, wherein the bottom of the hanger plate abuts against the ramp of the left transition passage.
4. The automatic threading adjustment device for the mutual inductor according to claim 1, wherein the second right channel comprises an upper channel and a lower channel, the cross-sectional dimension 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 abuts against the top surface of the lower channel, and one side of the horizontal plate is movably hinged to the side wall of the upper channel.
5. The automatic threading adjustment device for the mutual inductor as claimed in claim 4, wherein the bottom center of the horizontal plate is provided with a weight increasing member.
6. The automatic threading adjusting device for the mutual inductor as claimed in claim 1, wherein a clamp clamped with the mutual inductor is arranged at the central bottom of the fixed 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 true CN114094481A (en) | 2022-02-25 |
| CN114094481B CN114094481B (en) | 2024-04-19 |
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| 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 |
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| CN (1) | CN114094481B (en) |
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 |
| 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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN114094481B (en) | 2024-04-19 |
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