CN103050248B - The isolating transformer of the full embedding structure of a kind of metal of resistance to environment - Google Patents
The isolating transformer of the full embedding structure of a kind of metal of resistance to environment Download PDFInfo
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- CN103050248B CN103050248B CN201210593944.5A CN201210593944A CN103050248B CN 103050248 B CN103050248 B CN 103050248B CN 201210593944 A CN201210593944 A CN 201210593944A CN 103050248 B CN103050248 B CN 103050248B
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Abstract
The present invention relates to the isolating transformer of the full embedding structure of a kind of metal of resistance to environment, comprise metal shell, transformer coil, base plate, encapsulating wall and leading-off rods, wherein leading-off rods passes base plate and is fixed on base plate, one end of leading-off rods is connected with transformer coil, the other end is connected with external devices, encapsulating wall is fixedly connected on bottom edge, embedding space is formed on base plate, embedding interior volume is filled casting glue and is fixed by transformer coil, metal shell one end open is enclosed within encapsulating wall, and the openend of metal shell is fixedly connected with base plate, play the effect of integral sealing, it is higher that isolating transformer of the present invention has mechanical strength, environmental resistance is more outstanding, store and longer service life, more excellent and the better advantage of Electro Magnetic Compatibility performance of space adaptability performance.
Description
Technical field
The present invention relates to the isolating transformer of the full embedding structure of a kind of metal of resistance to environment, belong to Small-power pulse transformer technical field.
Background technology
1553B bus has become the bus standard that aerospace field dominates at present, has become the key of modern Aviation mobile system devices interconnect, is widely used on the weapon platforms such as aircraft, naval vessel, tank.The terminal equipment of 1553B bus is connected with bus by two kinds of connected modes, and one is direct coupling system, and namely terminal is directly connected with bus by stub; Another kind is indirect coupling mode, and namely terminal is connected with bus by coupling transformer.In order to realize short-circuit protection, the problem such as DC-isolation and impedance matching between bus system and terminal, no matter which kind of coupled modes terminal and bus system take, and must connect isolating transformer, as shown in Figure 1 between terminal transceiver and bus.What current existing isolation transformation adopted mostly is plastic capsulation structure, transformer coil embedding is fixed in plastic casing by epoxy pouring sealant.There is following shortcoming in the isolating transformer of plastic package structure:
(1) due to the abominable of Aero-Space model running environment, clearly, mechanical strength usually can not meet the needs of particular surroundings to the isolating transformer of the Plastic Package inferior position in environmental resistance;
(2) needs that some strategic arms models of China exist long term storage, wartime launches, storage period reaches decades, in storage period, do not allow any failure phenomenon to occur, and the isolating transformer of Plastic Package exterior material used is engineering plastics and epoxy pouring sealant, there is the risk of ageing failure in it after long term storage;
(3) application of isolating transformer in aerospace model is also more and more extensive, and nonmetallic materials exist natural inferior position in space radiation and thermal vacuum gassing aspect of performance, the toxic gas that nonmetallic materials are disengaged under vacuum conditions simultaneously likely causes actual bodily harm to astronaut.
Summary of the invention
The object of the invention is to the above-mentioned deficiency overcoming prior art, the isolating transformer of the full embedding structure of a kind of metal of resistance to environment is provided, this isolating transformer adopts packed by metal casing, inner full embedding structure, solve the shortcoming of the aspects such as the mechanical resistant environmental performance existed in existing isolating transformer is poor, longer-term storage easily lost efficacy, aerospace applications performance is not enough, improve the serviceability of product, strengthen the Electro Magnetic Compatibility of product simultaneously.
Above-mentioned purpose of the present invention is mainly achieved by following technical solution:
The isolating transformer of the full embedding structure of a kind of metal of resistance to environment, comprise metal shell, transformer coil, base plate, encapsulating wall and leading-off rods, wherein leading-off rods passes base plate and is fixed on base plate, one end of leading-off rods is connected with transformer coil, the other end is connected with external devices, encapsulating wall is fixedly connected on bottom edge, embedding space is formed on base plate, embedding interior volume is filled casting glue and is fixed by transformer coil, metal shell one end open is enclosed within encapsulating wall and base plate, and the openend of metal shell is fixedly connected with base plate, play the effect of integral sealing.
In the isolating transformer of the full embedding structure of the above-mentioned metal of resistance to environment, casting glue is organic silica gel.
In the isolating transformer of the full embedding structure of the above-mentioned metal of resistance to environment, leading-off rods and base plate are fixed in glass sintering mode, and glass insulator is by leading-off rods and base plate insulation.
In the isolating transformer of the full embedding structure of the above-mentioned metal of resistance to environment, leading-off rods and base plate adopt kovar alloy material to make.
In the isolating transformer of the full embedding structure of the above-mentioned metal of resistance to environment, encapsulating wall is bonded in bottom edge, and openend and the base plate of metal shell adopt Laser seal welding to be fixed to be connected.
In the isolating transformer of the full embedding structure of the above-mentioned metal of resistance to environment, leading-off rods is divided into two groups, is separately fixed at the two ends of base plate, and a leading-off rods is connected with an exit of transformer coil.
In the isolating transformer of the full embedding structure of the above-mentioned metal of resistance to environment, between encapsulating wall outer wall and metal shell inwall, retain the gap of 0.1mm ~ 0.3mm, ensure the surplus of inner casting glue dilatancy, ensure the convenience that metal shell and encapsulating wall are installed simultaneously.
The present invention compared with prior art has following beneficial effect:
(1), the isolating transformer of innovative design packed by metal casing of the present invention, inner full glue-filling solid fixed structure, this transformer is made up of parts such as transformer coil, metal shell, base plate, leading-off rods, encapsulating wall and inner casting glues, realized the functions such as impedance matching between 1553B bus system and terminal, DC-isolation and short-circuit protection by electromagnetic coupled principle, the packing forms of metal structure also improves the mechanical environment performance of product simultaneously;
(2), isolating transformer of the present invention adopt packed by metal casing, encapsulating wall and floor combination, inner encapsulating fix new structural design, make isolating transformer mechanical strength high, adverse environment resistant ability is strong; In addition the structure of external metallization shell can play very strong protective effect, and isolating transformer performance under longer-term storage and environment for use is not declined;
(3), the outgas of metal material of the present invention can ignore under vacuum conditions, and radiation-resistant property comparatively nonmetallic materials have great advantage, toxic gas can not be disengaged under vacuum conditions and actual bodily harm is caused to astronaut; The present invention is the significant innovation to isolating transformer, has remarkable lifting to the range of application of isolating transformer and effect;
(4), in isolating transformer of the present invention leading-off rods and base plate are fixed in glass sintering mode, and the fixed form of glass sintering makes the conjugation of the two very firm on the one hand, can keep good sealing effectiveness on the other hand;
(5), the casting glue of isolating transformer inside of the present invention is organic silica gel, and the advantage of organic silica gel is as follows: (a) hardness is low, soft, can play good buffer shock-absorbing protective effect to coil; B () strain is large, can ensure the sealing of shell and base plate; C () internal stress is little, little to the external carbuncle of coil, can not impact the inductance of coil; (d) Acclimation temperature wide ranges;
The advantage had of isolating transformer of the present invention is in sum: mechanical strength is higher, environmental resistance is more outstanding, store and longer service life, space adaptability performance is more excellent, Electro Magnetic Compatibility performance is better.
Accompanying drawing explanation
Fig. 1 is isolating transformer interface shape in the bus;
Fig. 2 is isolating transformer overall structure schematic diagram of the present invention;
Fig. 3 is transformer coil circuit theory diagrams of the present invention;
Fig. 4 is isolating transformer base plate of the present invention and leading-off rods structural representation.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Be illustrated in figure 1 isolating transformer interface shape in the bus, Fig. 1 a is direct coupling system, and Fig. 1 b is transformer coupled mode, and the data that 1553B bus is transmitted are Manchester II type biphase level codes, are the impulse levels of one group of reference format.Its transmission principle is as follows: when bus and terminal adopt direct-coupling, bus signals is entered by the 4-8 pin of isolating transformer, after isolating transformer, import terminal into by 1-3 pin; When bus and terminal adopt indirect coupling, bus signals is entered by the 5-7 pin of isolating transformer, after isolating transformer, enter terminal equally by 1-3 pin.
Be illustrated in figure 2 isolating transformer overall structure schematic diagram of the present invention, isolating transformer of the present invention is by comprising metal shell 1 as seen from the figure, transformer coil 2, base plate 3, encapsulating wall 4 and leading-off rods 5, wherein leading-off rods 5 passes base plate 3 and is fixed on base plate 3, one end of leading-off rods 5 is welded with transformer coil 2, the other end is connected with external devices, encapsulating wall 4 is bonded in base plate 3 edge, embedding space is formed on base plate 3, embedding interior volume is filled casting glue 6 and is fixed by transformer coil 2, metal shell 1 one end open is enclosed within encapsulating wall 4 and base plate 3, surrounding and base plate 3 Laser seal welding, play the effect of integral sealing.
Be illustrated in figure 3 transformer coil circuit theory diagrams of the present invention, transformer coil 2 is the critical components realizing signal isolation, coupling, by carrying out coil winding realization in high permeability magnetic core; Transformer coil 2, according to electromagnetic induction principle, adopts Small Pulse Transformer to carry out signal coupling, isolation between bus and terminal.Transformer coil 2 is made up of the magnetic core of high magnetic permeability and winding wire, magnetic core mainly provides magnetic flux the high medium channel leading transmission, winding wire forms multiple winding by suitable winding method on magnetic core, and reserve lead-in wire to be connected with external electrical, in the present embodiment, transformer coil 2 has 8 exits, one group is 3, and another group is 5.
Be illustrated in figure 4 isolating transformer base plate of the present invention and leading-off rods structural representation, leading-off rods 5 and base plate 3 are fixed in glass sintering mode, and base plate 3 pairs of leading-off rods 5 position, simultaneously and play the effect of sealing after metal shell 1 soldering and sealing.Leading-off rods 5 and base plate 3 generally adopt kovar alloy material to make, and keep similar expansion rate during to ensure the two glass sintering with glass dust.The fixed form of glass sintering makes the conjugation of the two very firm on the one hand, can keep good sealing effectiveness on the other hand.The leading-off rods 5 of base plate less than 3 is connected with external devices and plays the effect of electrical connection, the leading-off rods 5 of base plate more than 3 is connected with internal transformer coil 2, namely one end of leading-off rods 5 is connected with the pin of transformer coil 2, the other end is connected with outside circuit, to make to realize electrical interconnection inside and outside transformer, leading-off rods 5 and base plate 3 mainly insulate by glass insulator.
In the present embodiment, leading-off rods 5 is 8, is divided into two groups, is separately fixed at the two ends of base plate 3, and one group of leading-off rods 5 is 5, and another group leading-off rods 5 is 3, and a leading-off rods 5 is connected with an exit of transformer coil 2, as shown in Figure 4.
Encapsulating wall 4 overall dimension is consistent with base plate 3, ensures that encapsulating wall 4 and base plate 3 are bonded together the sealing of its inside rear; Retain very little gap between encapsulating wall 4 outer wall and metal shell 1 inwall simultaneously, be generally 0.1mm ~ 0.3mm, ensure the surplus of inner casting glue dilatancy, this gap can ensure that metal shell 1 can be installed to encapsulating wall 4 outside smoothly simultaneously.After transformer coil 2 and leading-off rods 5 have welded, encapsulating wall 4 is bonded in base plate 3 surrounding, inside casting glue 6 embedding is filled up, play the fixing effect of coil 2, play mechanical damping effect simultaneously, reduce external stress to the impact of coil, the effect of vibration damping heat transfer can be played.In the present embodiment, casting glue 6 selects organic silica gel, adopts organic silica gel as follows as the advantage of casting glue:
(1) hardness is low, soft, can play good buffer shock-absorbing protective effect to coil;
(2) strain is large, can ensure the sealing of shell and base plate;
(3) internal stress is little, little to the external carbuncle of coil, can not impact the inductance of coil;
(4) Acclimation temperature wide ranges.
Internal components is mainly protected by metal shell 1, plays simultaneously and supports fixing effect.Metal shell 1 adopts stretching and punching shaping, base plate 3 groups and encapsulating wall 4 bonding and after encapsulating, metal shell 1 is enclosed within base plate 3 groups, surrounding and base plate 3 Laser seal welding, play the effect of integral sealing, simultaneously because whole transformer coil 2 is closed by metal shell, its Electro Magnetic Compatibility is more excellent.
The above; be only the embodiment of the best of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
The content be not described in detail in specification of the present invention belongs to the known technology of professional and technical personnel in the field.
Claims (6)
1. the isolating transformer of the full embedding structure of the metal of resistance to environment, it is characterized in that: comprise metal shell (1), transformer coil (2), base plate (3), encapsulating wall (4) and leading-off rods (5), wherein leading-off rods (5) is fixed on base plate (3) through base plate (3), one end of leading-off rods (5) is connected with transformer coil (2), the other end is connected with external devices, encapsulating wall (4) is fixedly connected on base plate (3) edge, embedding space is formed on base plate (3), embedding interior volume is filled casting glue (6) and is fixed by transformer coil (2), metal shell (1) one end open is enclosed within encapsulating wall (4) and base plate (3), and the openend of metal shell (1) is fixedly connected with base plate (3), play the effect of integral sealing, the gap of 0.1mm ~ 0.3mm is retained between described encapsulating wall (4) outer wall and metal shell (1) inwall, ensure the surplus of inner casting glue (6) dilatancy, ensure the convenience that metal shell (1) and encapsulating wall (4) are installed simultaneously.
2. the isolating transformer of the full embedding structure of a kind of metal of resistance to environment according to claim 1, is characterized in that: described casting glue (6) is organic silica gel.
3. the isolating transformer of the full embedding structure of a kind of metal of resistance to environment according to claim 1, it is characterized in that: described leading-off rods (5) and base plate (3) are fixed in glass sintering mode, glass insulator is by leading-off rods (5) and base plate (3) insulation.
4. the isolating transformer of the full embedding structure of a kind of metal of resistance to environment according to claim 1 or 3, is characterized in that: described leading-off rods (5) and base plate (3) adopt kovar alloy material to make.
5. the isolating transformer of the full embedding structure of a kind of metal of resistance to environment according to claim 1, it is characterized in that: described encapsulating wall (4) is bonded in base plate (3) edge, the openend of metal shell (1) adopts Laser seal welding to be fixed with base plate (3) to be connected.
6. the isolating transformer of the full embedding structure of a kind of metal of resistance to environment according to claim 1, it is characterized in that: described leading-off rods (5) is divided into two groups, be separately fixed at the two ends of base plate (3), a leading-off rods (5) is connected with an exit of transformer coil (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210593944.5A CN103050248B (en) | 2012-12-26 | 2012-12-26 | The isolating transformer of the full embedding structure of a kind of metal of resistance to environment |
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| CN201210593944.5A CN103050248B (en) | 2012-12-26 | 2012-12-26 | The isolating transformer of the full embedding structure of a kind of metal of resistance to environment |
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| CN103050248A CN103050248A (en) | 2013-04-17 |
| CN103050248B true CN103050248B (en) | 2015-11-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236343A (en) * | 2013-04-27 | 2013-08-07 | 昆山禾旺电子有限公司 | Transformer |
| CN103515058A (en) * | 2013-09-09 | 2014-01-15 | 陕西长岭电子科技有限责任公司 | Isolation transformer for MIL-STD-1553B |
| CN104010461A (en) * | 2014-05-28 | 2014-08-27 | 合肥荣事达三洋电器股份有限公司 | Circuit board box capable of reducing bulging deformation after glue pouring |
| CN107273325B (en) * | 2017-05-04 | 2020-04-14 | 上海空间电源研究所 | 1553B bus transmission method applied to rotating end and fixed end |
| CN111768959B (en) | 2019-04-01 | 2022-03-08 | 台达电子企业管理（上海）有限公司 | Transformer device |
| CN111768960B (en) | 2019-04-01 | 2022-02-18 | 台达电子企业管理（上海）有限公司 | Potting box and transformer |
| CN111768947B (en) | 2019-04-01 | 2023-03-24 | 台达电子企业管理（上海）有限公司 | Transformer and method for manufacturing the same |
| CN111526026A (en) * | 2020-03-25 | 2020-08-11 | 株洲宏明日望电子科技股份有限公司 | Data transmission module with protection function |
| CN111354550A (en) * | 2020-03-25 | 2020-06-30 | 株洲宏明日望电子科技股份有限公司 | Mechanical impact resistant transformer |
| CN113936886B (en) * | 2021-10-28 | 2023-06-06 | 西安微电子技术研究所 | 1553B bus isolation transformer packaging structure and method |
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| DE2939507C2 (en) * | 1979-09-28 | 1983-12-29 | Transformatoren Union Ag, 7000 Stuttgart | Winding arrangement for transformers and reactors with one or more windings encapsulated in cast resin |
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| US4172964A (en) * | 1977-12-27 | 1979-10-30 | Western Electric Company, Incorporated | Packaged inductive coil assembly |
| CN201655478U (en) * | 2010-05-05 | 2010-11-24 | 唐山尚新融大电子产品有限公司 | Isolation transformer |
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