CN103839662A

CN103839662A - Potted type high-voltage transformer

Info

Publication number: CN103839662A
Application number: CN201310634484.0A
Authority: CN
Inventors: 李成; 吴登科; 李枭; 李怀田
Original assignee: GLORYMV ELECTRONICS CO Ltd
Current assignee: GLORYMV ELECTRONICS CO Ltd
Priority date: 2013-11-30
Filing date: 2013-11-30
Publication date: 2014-06-04
Anticipated expiration: 2033-11-30
Also published as: CN103839662B

Abstract

The invention discloses a potted type high-voltage transformer which is characterized in that a high-voltage transformer body is arranged on a base, a Huff structure is adopted for an outgoing line fixing plate and a backing plate, so that the high-voltage transformer body and the base is sleeved with the outgoing line fixing plate and the backing plate; outgoing lines of the high-voltage transformer body are fixed to the outgoing line fixing plate through pan head screws. By the adoption of the structure, the using requirements for the high-voltage transformer are met in voltage resistant and bad conditions, meanwhile, performance parameters of the high-voltage transformer can be obtained, and the potted type high-voltage transformer is high in voltage resistance and precision, small in size and occupied space, light in weight and high in reliability.

Description

A kind of encapsulation type high-tension transformer

Technical field

The present invention relates to the manufacturing field of high-tension transformer, particularly a kind of encapsulation type high-tension transformer.

Background technology

At present, transformer application is in daily life more and more general, its functional diversities, of a great variety, new style, and precision is higher, and outward appearance is beautiful, and electric property and structural strength are more safe and reliable.

For example, although a lot of transformers can normally be worked under normal temperature normality, can not meet under adverse circumstances and normally work, vehicle-mounted vibrations, the erosion of carrier-borne acid-alkali salt, airborne high/low-temperature impact, and even Aero-Space rugged environment more.Conventionally transformer is all to adopt iron core or magnetic core to produce the product that meets performance requirement, the design feature of common transformer is difficult to meet the requirements of adverse circumstances simultaneously, and high-tension transformer volume, the weight of common iron core, take up room larger, FERRITE CORE is frangible, and inconvenience is for aerospace equipment.

For the problems referred to above, a kind of novel special transformer is provided, there are three anti-functions to be adapted to various particular surroundingss.

Summary of the invention

Technical problem to be solved by this invention is, a kind of encapsulation type high-tension transformer is provided, and has three anti-functions to be adapted to various particular surroundingss.

For achieving the above object, technical scheme of the present invention is, a kind of encapsulation type high-tension transformer, is characterized in that: described transformer is that high-tension transformer main body is arranged on base, and lead-out wire fixed head and backboard adopt half slide structure to entangle high-tension transformer main body and base; The lead-out wire of high-tension transformer main body is fixed on lead-out wire fixed head by pan head screw.

Described high-tension transformer main body is that microcrystalline iron core is inserted in metal coating box, and in two end cap, covers insulation protective board, and the bottom of metal coating box is provided with Du Pont's paper and silicon rubber; Gap between metal coating box and microcrystalline iron core is filled with silicon rubber.

Described lead-out wire fixed head and backboard are asymmetric half slide structure, and the degree of depth of lead-out wire fixed head is more shallow, and the degree of depth of backboard is darker.

Described lead-out wire fixed head and backboard are fixed by bolt, nut; High-tension transformer main body is fixed by soket head cap screw and base, and high-tension transformer main body is provided with silver-plated setting-in round nut.

Described high-tension transformer main body is divided into two line bags, and each line bag is made up of primary and secondary coil.

The inwall of described base, backboard, lead-out wire fixed head scribbles methyl-silicone oil.

A kind of encapsulation type high-tension transformer, owing to adopting above-mentioned structure, the invention solves the instructions for use under the withstand voltage and mal-condition of high-tension transformer, simultaneously can reach the due performance parameter of high-tension transformer, withstand voltage height, precision is high, volume is little, it is little, lightweight to take up room, reliability is high.

Brief description of the drawings

Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation;

Fig. 1 is a kind of encapsulation type high-tension transformer of the present invention structural representation explosive view;

Fig. 2 is a kind of encapsulation type high-tension transformer of the present invention structural representation;

Fig. 3 is the structural representation explosive view of a kind of encapsulation type high-tension transformer of the present invention mesohigh transformer body;

In Fig. 1-3; 1, soket head cap screw; 2, base; 3, bolt; 4, silver-plated setting-in round nut; 5, backboard; 6, high-tension transformer main body; 7, lead-out wire fixed head; 8, nut; 9, pan head screw; 10, metal coating box; 11, microcrystalline iron core; 12, insulation protective board.

Embodiment

The present invention is directed to the feature of encapsulation type high-tension transformer self-demand, the one, design, the selection of cable and the selection of winding method and insulating material of box selected and protected to the iron core of transformer; The 2nd, high-tension transformer embedding version and insulation processing, the 3rd, the technological process of the design of encapsulating die, the selection of Embedding Material and embedding.The iron core that solves transformer is selected and protects the design consideration design of transformer of box to require to select iron core design protection box, the selection of cable will meet the requirement of electrical property and high/low-temperature impact, winding method is wanted simple easy operating, and insulating material will meet the requirement of insulation and embedding conjugation; Solving high-tension transformer embedding and insulation processing is mainly the embedding Mould Machining of being convenient to simple in structure, assembles reasonable convenient operation, ensures to increase in withstand voltage situation structural strength, reduces volume, weight reduction, saving potting compound; The design, the selection of Embedding Material and the technological process of embedding that solve encapsulating die are mainly the moulds suitable according to transformer device structure form design, select suitable potting compound and manufacturing process.

Concrete the present invention is that high-tension transformer main body 6 is arranged on base 2 as Figure 1-3, and lead-out wire fixed head 7 adopts half slide structure to entangle high-tension transformer main body 6 and base 2 with backboard 5; The lead-out wire of high-tension transformer main body 6 is fixed on lead-out wire fixed head 7 by pan head screw 9.Lead-out wire fixed head 7 is asymmetric half slide structure with backboard 5, and the degree of depth of lead-out wire fixed head 7 is more shallow, and the degree of depth of backboard 5 is darker.

High-tension transformer main body 6 is inserted in metal coating box 10 for microcrystalline iron core 11, and in two end cap, covers insulation protective board 12, and the bottom of metal coating box 10 is provided with Du Pont's paper and silicon rubber; Gap between metal coating box 10 and microcrystalline iron core 11 is filled with silicon rubber.Lead-out wire fixed head 7 is fixing by bolt 3, nut 8 with backboard 5; High-tension transformer main body 6 is fixing with base 2 by soket head cap screw 1, and high-tension transformer main body 6 is provided with silver-plated setting-in round nut 4.

In Fig. 3; first also evenly smear silicon rubber at the bottom of metal coating box 10 pad one deck Du Pont paper; then put into microcrystalline iron core 11; by inside and outside surrounding gap and fill up, cover insulation protective board 12 with silicon rubber above, evenly press; scrape off the silicon rubber that surrounding is overflowed; insulation protective board 12 adopts cold curing epoxy glue gummed with the junction of metal coating box 10, guarantees seamlessly, prevents that the infiltration of potting compound from producing the electrical property in conjunction with stress rupture iron core.

High-tension transformer main body 6 is divided into two line bags; each line bag is made up of primary and secondary coil; primary coil need to do bottom insulation by coiling 411 Du Pont's paper before coiling on protection box; select the coiling number of plies according to withstand voltage; coiling multilayer 411 Du Pont's paper between primary and secondary; interlayer is around 2 layer of 411 Du Pont's paper, 3 layer of 411 Du Pont's paper of line bag outsourcing, and lead-out wire adopts 3 layers of 0.13 thick 411 Du Pont's quires bags.

Backboard 5 adopts classical half slide structure with the compound mode of lead-out wire fixed head 7, see the exploded view of Fig. 1, when designing mould, as far as possible the round nut on lead-out wire is fixed on lead-out wire fixed head 7, the base plate of high-tension transformer main body 6 is fixed on the base 2 of mould, the very shallow instrument of being convenient to that lead-out wire fixed head 7 designs can put in assembly manipulation, backboard 5 without lead-out wire fixing hole so design darker, the not half slide structure of full symmetric, backboard 5 uses wedge structure design with the junction of lead-out wire fixed head 7, after assembling, inner chamber faying face Automatic Levelling, matched moulds place adopts large pressure small size contact, increased the compactness of matched moulds, reduce again the burr of embedding, alleviate the resistance of the demoulding simultaneously.

The pre-treatment of embedding, need to clean out, dry at Fig. 1 mesohigh transformer 6, and contrast mould goes out line position cutting wire length, welds silver-plated setting-in round nut 4, and it is full mellow and full without burr that solder joint is wanted; High-tension transformer need to split into seven parts, clean out respectively, dry, mould inner wall that wherein base 2, backboard 5, lead-out wire fixed head 7 form is the very thin one deck methyl-silicone oil of brushing evenly, and 300 DEG C of high-temperature process very thin one deck silicone grease of obliterating after 2 hours is to be cooled.High-tension transformer main body 6 needs to detect the break-make of lead-in wire before dress mould, by pan head screw 9, high-tension transformer main body 6 and lead-in wire is fixed on mould.The pre-buried pre-treatment glass fabric of surrounding at mould increases surface strength.Fastening soket head cap screw 1, bolt 3, nut 8 complete the assembling of high-tension transformer and mould, then carry out vacuumize.Potting compound is formulated in proportion by epoxy resin, modified methyl tetrahydrophthalic anhydride, flexibilizer, four kinds of compositions of silicon powder, then carries out vacuumize and raw material and mixes.

Embedding and reprocessing: adopt automatic vacuum embedding equipment, put into 95 DEG C of mould preheatings two hours, the compound of preheating is poured in embedding storage container, adjust mould to the material guide port of embedding above pouring slot, vacuum degree control is in 600Pa left and right, open switch, potting compound enters in mould from material guide port, check note feeding by observation window, closing switch in good time, aforesaid operations to liquid level arrives specified altitude assignment repeatedly, keep vacuum degree until only have a small amount of minute bubbles to overflow, slowly venting, open vacuum tank, the mould of having filled with is moved into be warming up in 85 DEG C of baking ovens and be cured, on a time period, step temperature requires to solidify, after solidifying end, close baking oven, naturally be cooled to 50 DEG C of left and right, take out mould and carry out the demoulding, complete after cooling embedding.Reprocessing be machining pouring gate to dimensional requirement, processing place need be cleaned out, be dried, and smears three anti-insulating varnish, places after 24 hours, carries out de-stress processing.

By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as the various improvement that adopted technical solution of the present invention to carry out, or directly apply to other occasion without improvement, all within protection scope of the present invention.

Claims

1. an encapsulation type high-tension transformer, it is characterized in that: described transformer is that high-tension transformer main body (6) is arranged on base (2) above, and lead-out wire fixed head (7) adopts half slide structure to entangle high-tension transformer main body (6) and base (2) with backboard (5); The lead-out wire of high-tension transformer main body (6) is fixed on lead-out wire fixed head (7) by pan head screw (9).

2. a kind of encapsulation type high-tension transformer according to claim 1, it is characterized in that: described high-tension transformer main body (6) is inserted in metal coating box (10) for microcrystalline iron core (11), and in two end cap, cover insulation protective board (12), the bottom of metal coating box (10) is provided with Du Pont's paper and silicon rubber; Gap between metal coating box (10) and microcrystalline iron core (11) is filled with silicon rubber.

3. a kind of encapsulation type high-tension transformer according to claim 1, is characterized in that: described lead-out wire fixed head (7) is asymmetric half slide structure with backboard (5), and the degree of depth of lead-out wire fixed head (7) is more shallow, and the degree of depth of backboard (5) is darker.

4. according to a kind of encapsulation type high-tension transformer described in claim 1 or 3, it is characterized in that: described lead-out wire fixed head (7) is fixing by bolt (3), nut (8) with backboard (5); High-tension transformer main body (6) is fixing by soket head cap screw (1) and base (2), and high-tension transformer main body (6) is provided with silver-plated setting-in round nut (4).

5. a kind of encapsulation type high-tension transformer according to claim 1, is characterized in that: described high-tension transformer main body (6) is divided into two line bags, and each line bag is made up of primary and secondary coil.

6. a kind of encapsulation type high-tension transformer according to claim 1, is characterized in that: the inwall of described base (2), backboard (5), lead-out wire fixed head (7) scribbles methyl-silicone oil.