CN108899182B - High-voltage short-circuit protection transformer - Google Patents
High-voltage short-circuit protection transformer Download PDFInfo
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- CN108899182B CN108899182B CN201810793454.7A CN201810793454A CN108899182B CN 108899182 B CN108899182 B CN 108899182B CN 201810793454 A CN201810793454 A CN 201810793454A CN 108899182 B CN108899182 B CN 108899182B
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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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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Abstract
The invention relates to a high-voltage short-circuit protection transformer, which comprises a closed outer iron core, an inner iron core of a short-circuit protection split body, a primary input assembly, a secondary output assembly and an L-shaped mounting bracket, wherein the closed outer iron core is a laminated assembly of I-shaped grooves, the inner iron core of the short-circuit protection split body is embedded in a cross-shaped iron core in a clearance mode, the primary input assembly is arranged on the left side of the cross-shaped iron core, the secondary output assembly is arranged on the right side of the cross-shaped iron core, the L-shaped mounting bracket is an L-shaped fixing frame with the surface attached to two sides of the front vertical surface and the rear vertical surface of the closed outer iron core, the profile of the high-voltage short-circuit protection transformer is that the length, the width and the. According to the high-voltage short-circuit protection transformer, the embedded gap and the flow-through hole with the same area are formed in the iron core in the short-circuit protection sub-body, so that 120VAC input and 5000VAC and 8mA output can be realized, a short-circuit magnetic induction loop is disconnected instantly, an input coil and an output coil are protected, and the high-voltage short-circuit protection transformer is simple in structure, practical in function and high in cost performance.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a miniature high-boost transformer for short-circuit protection.
Background
The transformer is widely used in the electronic and power industries, and the small-sized and miniature transformers are widely used in various electronic controls, wherein in the high-voltage step-up transformer, especially the miniature step-up transformer with the step-up ratio larger than 40 in the prior art, the instantaneous value of the current at the high-voltage output end is increased, especially the instantaneous value of the output short circuit, the current of the input coil exceeds the rated current which can be borne by the coil, so that the heat generated in the coil is difficult to dissipate, the coil is burnt out, and the large loss of instrument and equipment is caused.
Disclosure of Invention
Based on this, aiming at the prior art, the technical problem to be solved by the invention is to provide a high-voltage short-circuit protection transformer which has large step-up ratio, simple structure, low cost and effective short-circuit protection.
The technical scheme of the invention is as follows:
a high-voltage short-circuit protection transformer comprises a closed outer iron core, an inner iron core of a short-circuit protection sub-body, a primary input assembly, a secondary output assembly and an L-shaped mounting bracket, wherein the closed outer iron core is an annular laminated assembly with an inverted H-shaped hollow groove, the inner iron core of the short-circuit protection sub-body is a cross-shaped iron core embedded in the H-shaped groove with a gap, a center shaft through hole of the primary input assembly is sleeved on the left side of the cross-shaped iron core, a center shaft through hole of the secondary output assembly is sleeved on the right side of the cross-shaped iron core in a clamping manner, the L-shaped mounting bracket is an L-shaped fixing frame which is attached on the surfaces of two sides of front and rear vertical surfaces of the closed outer iron core, the profile of the high-voltage short-circuit protection transformer is characterized in that the length, the width, the height and the width are less than 15cm, 8cm and the, the short-circuit protection divides internal iron core to include inlays dress gap, breathes out the orifice, inlay the dress gap do short-circuit protection divides internal iron core with loose complex gap between the I-shaped groove, it is established to breathe out the orifice the vertical centraxonial through-hole of cross iron core, it is perpendicular to breathe out the orifice short-circuit protection divides internal iron core plane, the cumulative area who inlays the dress gap equals the area of breathing out the orifice.
In one embodiment, the input of the high-voltage short-circuit protection transformer is 120VAC, the output of the high-voltage short-circuit protection transformer is 5000VAC, and the output-input voltage step-up ratio is 41.66.
In one embodiment, the closed outer iron core comprises an insulating silicon steel annular core lamination, a first coil accommodating groove and a second coil accommodating groove, the insulating silicon steel annular core lamination is laminated and stacked in a contact manner, the first coil accommodating groove is a small accommodating cavity which is arranged on the left side and is embedded with the primary input assembly, and the second coil accommodating groove is a large accommodating cavity which is arranged on the right side and is embedded with the secondary output assembly.
In one embodiment, the primary input assembly comprises a primary coil input line, an insulating tape and an end insulating support, the end insulating support is a winding slot support with two vertical longitudinal arms, the end insulating support is provided with an outgoing line clamping slot, the primary coil input line is embedded in the outgoing line clamping slot close to the outer side, and the insulating tape is wound on the outer periphery of the secondary coil.
In one embodiment, the secondary output assembly comprises a secondary coil output line and a coil insulation plastic shell, the coil insulation plastic shell is an outer insulation shell with a high-voltage winding separation groove arranged therein, and the secondary coil output line is led out from the outer side of the coil insulation plastic shell.
In one embodiment, the L-shaped mounting bracket includes a mounting hole and an iron core riveting hole, the iron core riveting hole is fixedly riveted with the closed outer iron core by a rivet, and the mounting hole is an oblong fixing screw hole provided in the L-shaped mounting bracket.
Compared with the prior art, the high-voltage short-circuit protection transformer has the advantages that the embedded gap and the flow-information hole with equal area are arranged in the short-circuit protection sub-body through the iron core, the input of 120VAC and the output of 5000VAC and 8mA can be realized, the short-circuit magnetic induction loop is disconnected instantly, the input coil and the output coil are protected, the structure is simple, the functions are practical, the cost performance is high, and the beneficial technical effects are as follows:
1. the short-circuit protection of inputting 120VAC and outputting 5000VAC and 8mA in the WeChat transformer is realized by closing the outer iron core and the matched short-circuit protection split inner iron core;
2. when the iron core in the short-circuit protection sub-body realizes output short circuit by embedding a gap, the magnetic induction loop is retained, the instant magnetic circuit is disconnected, and the large current of the input coil is protected;
3. the current flowing hole of the iron core in the short-circuit protection sub-body can instantly disconnect the protection of a magnetic circuit, and the current flowing hole also protects an output coil under the action of outputting the high current of a short circuit.
Drawings
Fig. 1 is a schematic structural diagram of a high-voltage short-circuit protection transformer of the present invention.
In the figure, 10 — closing the outer core; 11-insulating silicon steel annular core lamination; 12- -first coil receiving slot; 13- -second coil receiving slot; 20- -short protection split internal core; 21- -embedding a spacing gap; 22-an information flow aperture; 30- -primary input assembly; 31- -primary input line; 32- -insulating tape; 33- -end insulation support; 40- -a secondary output assembly; 41- -secondary coil output line; 42- -coil insulation plastic shell; 50-L-shaped mounting bracket; 51- -mounting holes; 52- -iron core staking hole.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.
Fig. 1 shows a schematic structural diagram of a high-voltage short-circuit protection transformer of the present invention, as can be seen from fig. 1, the high-voltage short-circuit protection transformer comprises a closed outer iron core 10, a short-circuit protection split inner iron core 20, a primary input component 30, a secondary output component 40 and an L-shaped mounting bracket 50, the closed outer iron core 10 is an annular laminated assembly with an inverted i-shaped hollow groove, the short-circuit protection split inner iron core 20 is a cross-shaped iron core embedded in the i-shaped groove with a gap, a central axis through hole of the primary input component 30 is sleeved on the left side of the cross-shaped iron core, a central axis through hole of the secondary output component 40 is sleeved and clamped on the right side of the cross-shaped iron core, the L-shaped mounting bracket 50 is an L-shaped fixing frame whose surface is attached on both sides of the front and back vertical surfaces of the closed outer iron core 20, the high-voltage short-circuit protection transformer has an outline with a length, the no-load output current of secondary output assembly 40 is less than 8 mA.
The input of the high-voltage short-circuit protection transformer is 120VAC, the output of the high-voltage short-circuit protection transformer is 5000VAC, and the output-input voltage step-up ratio is 41.66.
The closed outer iron core 10 comprises an insulating silicon steel annular core lamination 11, a first coil accommodating groove 12 and a second coil accommodating groove 13, the insulating silicon steel annular core lamination 11 is attached and stacked in a surface contact mode, the first coil accommodating groove 12 is a small accommodating cavity which is formed in the left side and is embedded with the primary input assembly 30, and the second coil accommodating groove 13 is a large accommodating cavity which is formed in the right side and is embedded with the secondary output assembly 40.
The short-circuit protection sub-body iron core 20 comprises an embedded gap 21 and a current flowing hole 22, the embedded gap 21 is a gap which is loosely matched between the short-circuit protection sub-body iron core 20 and an I-shaped groove, and the current flowing hole 22 is a through hole which is arranged on a longitudinal central axis of the cross-shaped iron core.
The primary input assembly 30 comprises a primary coil input line 31, an insulating tape 32 and an end insulating support 33, the end insulating support 33 is a winding slot support with two vertical longitudinal arms, the end insulating support 33 is provided with an outgoing line slot, the primary coil input line 31 is embedded and clamped in the outgoing line slot close to the outer side, and the insulating tape 32 is wound on the outer periphery of the secondary coil.
The secondary output assembly 40 includes a secondary coil output line 41 and a coil insulation plastic shell 42, the coil insulation plastic shell 41 is an outer insulation shell with a high-voltage winding separation groove arranged therein, and the secondary coil output line 41 is led out from the outer side of the coil insulation plastic shell.
The L-shaped mounting bracket 51 includes a mounting hole 51 and an iron core riveting hole 52, the iron core riveting hole 52 is fixedly riveted to the closed outer iron core 10 by a rivet, and the mounting hole 51 is an oblong fixing screw hole formed in the L-shaped mounting bracket.
The cumulative area of the fitted clearance slots 21 is equal to the area of the breather holes 22.
From the above, the high-voltage short-circuit protection transformer of the invention can realize the input of 120VAC and the output of 5000VAC and 8mA by arranging the embedded clearance gap and the flow-through hole with equal area on the iron core in the short-circuit protection sub-body, the short-circuit magnetic induction loop is disconnected instantly, the input coil and the output coil are protected, the structure is simple, the function is practical, the cost performance is high, and the beneficial technical effects are as follows:
1. the short-circuit protection of inputting 120VAC and outputting 5000VAC and 8mA in the micro transformer is realized by closing the outer iron core and the matched short-circuit protection split inner iron core;
2. when the iron core in the short-circuit protection sub-body realizes output short circuit by embedding a gap, the magnetic induction loop is retained, the instant magnetic circuit is disconnected, and the large current of the input coil is protected;
3. the current flowing hole of the iron core in the short-circuit protection sub-body can instantly disconnect the protection of a magnetic circuit, and the current flowing hole also protects an output coil under the action of outputting the high current of a short circuit.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A high-voltage short-circuit protection transformer is characterized by comprising a closed outer iron core, an inner iron core of a short-circuit protection sub-body, a primary input assembly, a secondary output assembly and an L-shaped mounting bracket, wherein the closed outer iron core is an annular laminated assembly with an inverted I-shaped hollow groove, the inner iron core of the short-circuit protection sub-body is a cross iron core embedded in the I-shaped groove with a gap, a center shaft through hole of the primary input assembly is sleeved on the left side of the cross iron core, a center shaft through hole of the secondary output assembly is sleeved and clamped on the right side of the cross iron core, the L-shaped mounting bracket is an L-shaped fixing frame which is attached on two sides of a front vertical surface and a rear vertical surface of the closed outer iron core, the high-voltage short-circuit protection transformer is characterized in that the length, the width and the height of the contour of the high-voltage short-circuit protection transformer, the no-load output current of the secondary output assembly is less than 8mA, the short-circuit protection divides the internal iron core to include and inlays dress gap, breath the discharge orifice, inlay the dress gap do the short-circuit protection divides internal iron core with loose complex gap between the I-shaped groove, breathe the discharge orifice for establishing the vertical centraxonial through-hole of cross iron core, it is perpendicular to breathe the discharge orifice the internal iron core plane of short-circuit protection branch, the cumulative area who inlays the dress gap equals the area of breathing the discharge orifice.
2. The high voltage short circuit protection transformer of claim 1, wherein the input of the high voltage short circuit protection transformer is 120VAC, the output is 5000VAC, and the output-to-input voltage step-up ratio is 41.66.
3. The high-voltage short-circuit protection transformer according to claim 2, wherein the closed outer iron core comprises an insulating silicon steel annular core lamination, a first coil accommodating slot and a second coil accommodating slot, the insulating silicon steel annular core lamination is laminated and stacked in a face-to-face contact manner, the first coil accommodating slot is a small cavity arranged on the left side and embedded with the primary input assembly, and the second coil accommodating slot is a large cavity arranged on the right side and embedded with the secondary output assembly.
4. The high-voltage short-circuit protection transformer according to claim 2, wherein the primary input assembly comprises a primary coil input line, an insulating tape and an end insulating bracket, the end insulating bracket is a winding slot bracket with two vertical longitudinal arms, the end insulating bracket is provided with an outlet slot, the primary coil input line is embedded and clamped in the outlet slot close to the outer side, and the insulating tape is wound on the outer periphery of the secondary coil.
5. The high-voltage short-circuit protection transformer according to claim 2, wherein the secondary output assembly comprises a secondary coil output wire and a coil insulation plastic shell, the coil insulation plastic shell is an outer insulation shell with a high-voltage winding separation groove arranged inside, and the secondary coil output wire is led out from the outer side of the coil insulation plastic shell.
6. The high-voltage short-circuit protection transformer according to claim 2, wherein the L-shaped mounting bracket comprises a mounting hole and an iron core riveting hole, the iron core riveting hole is fixedly connected with the closed outer iron core through a rivet, and the mounting hole is an oblong fixing screw hole formed in the L-shaped mounting bracket.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018103348861 | 2018-04-15 | ||
| CN201810334886 | 2018-04-15 |
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| CN108899182A CN108899182A (en) | 2018-11-27 |
| CN108899182B true CN108899182B (en) | 2021-01-05 |
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| CN201810793454.7A Active CN108899182B (en) | 2018-04-15 | 2018-07-19 | High-voltage short-circuit protection transformer |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58168210A (en) * | 1982-03-29 | 1983-10-04 | Matsushita Electric Ind Co Ltd | Thin ferroresonance transformer |
| JPS5934614A (en) * | 1982-08-20 | 1984-02-25 | Tdk Corp | Leakage transformer for high frequency |
| JPS5941815A (en) * | 1982-09-01 | 1984-03-08 | Tdk Corp | High-frequency leakage transformer |
| DE3816185A1 (en) * | 1987-06-11 | 1988-12-29 | Blum Gmbh & Co E | Stabiliser (constant voltage transformer) |
| US5117176A (en) * | 1990-11-06 | 1992-05-26 | Bobry Howard H | Alternating current conditioner |
| JP3923911B2 (en) * | 2003-03-07 | 2007-06-06 | 東光株式会社 | Inverter transformer |
| CN201402714Y (en) * | 2009-04-23 | 2010-02-10 | 青岛海信电器股份有限公司 | Transformer magnetic core and direct current-alternating current inverter applying thereof |
| CN102163489A (en) * | 2011-01-25 | 2011-08-24 | 清流县鑫磁线圈制品有限公司 | Series integrated inductive device |
| CN203301834U (en) * | 2013-06-13 | 2013-11-20 | 浙江达浦电器有限公司 | Magnetic leakage type ballast |
| CN103646768A (en) * | 2013-12-24 | 2014-03-19 | 国家电网公司 | Active electronic current transformer |
| CN205303125U (en) * | 2015-12-29 | 2016-06-08 | 清流县鑫磁线圈制品有限公司 | Telescopic EEI makes up magnetic core |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7271695B2 (en) * | 2005-08-27 | 2007-09-18 | Tyco Electronics Power Systems, Inc. | Electromagnetic apparatus and method for making a multi-phase high frequency electromagnetic apparatus |
| CN105428033B (en) * | 2016-01-07 | 2017-10-27 | 华北电力科学研究院有限责任公司 | A kind of photovoltaic transformer amorphous alloy iron core structure for reducing eddy-current heating |
-
2018
- 2018-07-19 CN CN201810793454.7A patent/CN108899182B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58168210A (en) * | 1982-03-29 | 1983-10-04 | Matsushita Electric Ind Co Ltd | Thin ferroresonance transformer |
| JPS5934614A (en) * | 1982-08-20 | 1984-02-25 | Tdk Corp | Leakage transformer for high frequency |
| JPS5941815A (en) * | 1982-09-01 | 1984-03-08 | Tdk Corp | High-frequency leakage transformer |
| DE3816185A1 (en) * | 1987-06-11 | 1988-12-29 | Blum Gmbh & Co E | Stabiliser (constant voltage transformer) |
| US5117176A (en) * | 1990-11-06 | 1992-05-26 | Bobry Howard H | Alternating current conditioner |
| JP3923911B2 (en) * | 2003-03-07 | 2007-06-06 | 東光株式会社 | Inverter transformer |
| CN201402714Y (en) * | 2009-04-23 | 2010-02-10 | 青岛海信电器股份有限公司 | Transformer magnetic core and direct current-alternating current inverter applying thereof |
| CN102163489A (en) * | 2011-01-25 | 2011-08-24 | 清流县鑫磁线圈制品有限公司 | Series integrated inductive device |
| CN203301834U (en) * | 2013-06-13 | 2013-11-20 | 浙江达浦电器有限公司 | Magnetic leakage type ballast |
| CN103646768A (en) * | 2013-12-24 | 2014-03-19 | 国家电网公司 | Active electronic current transformer |
| CN205303125U (en) * | 2015-12-29 | 2016-06-08 | 清流县鑫磁线圈制品有限公司 | Telescopic EEI makes up magnetic core |
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| CN108899182A (en) | 2018-11-27 |
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