CN219497481U - Transformer structure with magnetic leakage prevention function - Google Patents

Abstract

The utility model relates to the technical field of magnetic leakage prevention of transformers, and discloses a transformer structure with a magnetic leakage prevention function, wherein the main transformer is arranged in an outer shell, a top plate is transversely movably arranged at the top of the outer shell, a clamping plate is longitudinally inserted into the front of the outer shell, a mounting plate is transversely movably arranged at the bottom of an inner cavity of the outer shell, magnetic coatings are sprayed on the inner wall of the outer shell, a copper ring is further attached to the upper part of a lifting seat flange, and a groove is formed in the inner side edge of the copper ring. This transformer structure with leak protection magnetism function drives the main transformer at mounting panel and top through the handle that locates the mounting panel top and rises, and the convenience takes out the transformer from protective housing's inside, goes out the flange joint face aluminium system of rising seat flange at the low pressure side of main transformer and goes out line, pastes a copper ring, prevents that the magnetic leakage from getting into in rising seat, reduces vortex, the stray loss of rising seat flange department, reduces the temperature rise.

Description

Transformer structure with magnetic leakage prevention function

Technical Field

The utility model relates to the technical field of magnetic leakage prevention of transformers, in particular to a transformer structure with a magnetic leakage prevention function.

Background

A transformer is a device for changing an ac voltage using the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil, and an iron core (magnetic core).

The common transformer structure utilizes the principle of electromagnetic induction to change the device of alternating voltage, and the main component is primary coil, secondary coil and iron core, and the secondary coil is outside primary coil, and when primary coil was on alternating current, the transformer iron core produced alternating magnetic field, and the secondary coil just produced induced electromotive force, can convert the electric energy into high voltage low current form, then converts back again, and this is traditional mode of operation. In order to dissipate heat, the common transformer has an iron core which is not completely surrounded by the coil, and the coil has current to pass through, so that a magnetic field is necessarily generated and is not converted into electric energy by the secondary coil, the part of the magnetic field which is not converted is magnetic leakage, and the magnetic leakage not only can generate electromagnetic interference to a power supply, but also restricts the conversion efficiency of the power supply. The magnetic leakage prevention structure (such as a magnetic leakage prevention metal plate) is arranged on part of the equipment to achieve the magnetic leakage prevention effect, and a protection plate is additionally arranged on the outer side of the transformer and is connected through bolts, so that the transformer is not easy to take out when being maintained or parts are replaced;

meanwhile, the main transformer and the factory transformer of the large-scale thermal generator set in China are large in capacity, the voltage and the current at the outlet sleeve pipes of the low-voltage side and the low-voltage side of the transformer are high, the condition that the flange surface is overtemperature or overheated due to leakage magnetic flux or vortex is frequently caused at the flange surface of the lifting seat of the low-voltage side of the main transformer, the condition that the temperature of the flange joint surface is high due to the fact that the sleeve pipe at the outer side of the joint surface of the lifting seat of the flange of the main transformer is partially increased, and the high-current leakage magnetic field and vortex of an external lead wire cause the lifting of the low-voltage side of the main transformer is not considered in the prior art, and therefore, the transformer structure with the magnetic leakage prevention function is provided.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a transformer structure with a magnetic leakage prevention function, so as to solve the technical problems.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a transformer structure with leak protection magnetism function, includes shell body and main transformer, the main transformer install in the inside of shell body, the horizontal movable mounting in top of shell body has the roof, the front of shell body has vertically inserted the cardboard, the horizontal activity of inner chamber bottom of shell body has added the mounting panel, the magnetic isolation board is all vertically installed to the central point of mounting panel put both sides, the recess has been seted up at the top of mounting panel, and the bottom of main transformer installs in the inside of recess, the inner wall of shell body has all been sprayed with the magnetic coating, the louvre has all been seted up to the inner wall of shell body;

the low pressure side of main transformer has installed aluminium system's rising seat, rising seat flange has been installed to rising seat's periphery, the transformer flange has been installed to main transformer's low pressure side upper surface, rising seat flange is located transformer flange's upper portion, and presss from both sides between the two and be equipped with sealed the pad, rising seat flange's upper portion still pastes and has had the copper ring, the groove has been seted up at the inboard border of copper ring, run through spacing through the screw structure between copper ring, rising seat flange and the transformer flange.

Preferably, the dust covers are arranged at the center positions of the two sides of the outer shell, and are communicated with the air outlet ends of the radiating holes at the center positions of the two sides of the outer shell.

Preferably, the jack is longitudinally arranged on one side of the top of the outer shell, the positioning grooves are longitudinally clamped on the other side of the top of the outer shell, and the slots are transversely arranged on one side of the bottom of the inner cavity of the outer shell.

Preferably, the limiting grooves are transversely formed in two sides of the inner wall of the slot, limiting rods are transversely movably mounted in the limiting grooves, extrusion springs are sleeved at the center positions of the outer surfaces of the limiting rods, and one ends of the limiting rods extend outwards through the limiting grooves and are connected with limiting plates.

Preferably, the inserted link is vertically installed to bottom one side of roof, the bottom opposite side of roof is vertically added and is equipped with first locating piece, the both sides of medial surface lower part of cardboard both sides fixed mounting have the second locating piece, the horizontal fixed mounting in bottom of cardboard has the picture peg.

Preferably, handles are longitudinally arranged on two sides of the top of the mounting plate, sliding blocks are fixedly arranged on two sides of the mounting plate, sliding grooves are formed in the inner wall of the outer shell corresponding to the sliding blocks, and the sliding blocks are arranged in the sliding grooves.

(III) beneficial effects

Compared with the prior art, the utility model provides a transformer structure with a magnetic leakage prevention function, which has the following beneficial effects:

1. according to the transformer structure with the anti-magnetic leakage function, the limiting rods are pulled outwards to be disconnected with the limiting holes on the two sides of the inserting plate and retract into the limiting grooves, the inserting rods at the bottom and the first positioning blocks are separated from the inserting holes and the inner parts of the positioning grooves respectively when the top plate is lifted, and the second positioning blocks on the inner side surface and the inserting plate are separated from the positioning grooves and the inner parts of the inserting grooves respectively when the clamping plate is lifted;

2. according to the transformer structure with the magnetic leakage prevention function, when the handle arranged at the top of the mounting plate is pulled up by external force, the mounting plate and the main transformer at the top rise, and the sliding blocks at two sides of the mounting plate move in the sliding grooves on the inner wall of the outer shell, so that the transformer can be taken out from the inside of the protective shell more conveniently;

3. according to the transformer structure with the magnetic leakage prevention function, the upper surface of the flange joint surface of the low-voltage side outgoing line lifting seat of the main transformer is provided with the aluminum lifting seat flange, a copper ring is attached to the upper surface of the flange joint surface of the low-voltage side outgoing line lifting seat of the main transformer, so that magnetic leakage is prevented from entering the lifting seat, eddy current and stray loss at the flange of the lifting seat are reduced, temperature rise is reduced, and the condition of over-temperature or over-temperature at the flange joint surface of the low-voltage side lifting seat assembly of the large transformer of a power grid and a generator set is eliminated.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the separation structure of the outer shell and the top plate and the clamping plate;

FIG. 3 is a schematic cross-sectional internal structure of the outer housing of the present utility model;

FIG. 4 is a schematic view of the outer structure of the elevating seat part of the present utility model;

FIG. 5 is an enlarged schematic view of the structure A of FIG. 4 according to the present utility model;

fig. 6 is a schematic view of the copper ring structure of the present utility model.

In the figure: 1. an outer housing; 2. a main transformer; 21. a lifting seat; 22. raising the seat flange; 23. a transformer flange; 24. a sealing gasket; 25. a copper ring; 26. groove; 27. a screw structure; 3. a top plate; 4. a clamping plate; 5. a mounting plate; 6. a magnetism isolating plate; 7. a dust cover; 8. a jack; 9. a positioning groove; 10. a slot; 11. a limit rod; 12. extruding a spring; 13. a rod; 14. a first positioning block; 15. a second positioning block; 16. and (5) inserting plates.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a technical scheme, a transformer structure with a magnetic leakage prevention function, which comprises an outer shell 1, a main transformer 2, a top plate 3, a clamping plate 4, a mounting plate 5, a magnetic isolation plate 6, a dust cover 7, an inserting hole 8, a positioning groove 9, an inserting groove 10, a limiting rod 11, an extrusion spring 12, an inserting rod 13, a first positioning block 14, a second positioning block 15 and an inserting plate 16, wherein the main transformer 2 is arranged in the outer shell 1, the main transformer 2 plays a role in protecting, the top of the outer shell 1 is transversely and movably provided with the top plate 3, the front of the outer shell 1 is longitudinally inserted with the clamping plate 4, the bottom of an inner cavity of the outer shell 1 is transversely and movably provided with the mounting plate 5, both sides of the central position of the mounting plate 5 are longitudinally provided with the magnetic isolation plate 6, the top of the mounting plate 5 is provided with a groove, the bottom of the main transformer 2 is arranged in the groove, the inner wall of the outer shell 1 is sprayed with a magnetic coating, the magnetic coating plays a magnetic leakage prevention role, the inner wall of the outer shell 1 is provided with a radiating hole through the magnetic isolation plate 6, and the inner wall of the outer shell 1 is provided with a radiating hole for radiating heat generated when the transformer 2 works;

referring to fig. 4, 5 and 6, an aluminum lifting seat 21 is installed on the low-voltage side of the main transformer 2, a lifting seat flange 22 is installed on the periphery of the lifting seat 21, a transformer flange 23 is installed on the upper surface of the low-voltage side of the main transformer 2, the lifting seat flange 22 is located on the upper portion of the transformer flange 23, a sealing gasket 24 is clamped between the lifting seat flange 22 and the upper portion of the transformer flange, a copper ring 25 is attached to the upper portion of the lifting seat flange 22, a groove 26 is formed in the inner side edge of the copper ring 25, and penetrating limiting is performed among the copper ring 25, the lifting seat flange 22 and the transformer flange 23 through a screw structure 27.

A copper ring 25 with the thickness of 20mm and the brand of T2 is attached to the upper surface of an aluminum lifting seat flange 22 of the flange joint surface of a low-voltage side outgoing line lifting seat 21 of the main transformer 2, the cross section of the copper ring 25 is not lower than 925mm2, magnetic leakage is prevented from entering the lifting seat 21, eddy current and stray loss at the position of the lifting seat flange 22 are reduced, and temperature rise is reduced. The scheme aims to eliminate the over-temperature or over-temperature condition at the flange joint surface of the high-pressure side seat assembly of the large transformer of the power grid and the generator set.

The edge of the sealing mother B-phase flange is the hottest point, the temperature is 114 ℃, by adopting the scheme (the upper part of the sealing mother flange is stuck with a copper ring plate with the thickness of 20 mm), the temperature of the heat of the sealing mother B-phase flange at the highest point of full load is 100 ℃, the overtemperature phenomenon at the flange joint surface of the main transformer low-voltage side lifting seat mechanism is improved, and the safe and stable operation of the main transformer 2 is ensured.

Referring to fig. 1, dust covers 7 are mounted at the center positions of both sides of the outer casing 1 and are communicated with the air outlet ends of the heat dissipation holes at the center positions of both sides of the outer casing 1, so that ash layer particles in air are prevented from entering the main transformer 2, and normal operation of the main transformer 2 is prevented.

Referring to fig. 2, a jack 8 is longitudinally provided on one side of the top of the outer casing 1, a positioning slot 9 is longitudinally provided on the other side of the top of the outer casing 1, and a slot 10 is transversely provided on one side of the bottom of the inner cavity of the outer casing 1, so as to be convenient for connection with the top plate 3 and the clamping plate 4.

Referring to fig. 3, both sides of the inner wall of the slot 10 are transversely provided with a limit groove, the inside of the limit groove is transversely movably provided with a limit rod 11, the center of the outer surface of the limit rod 11 is sleeved with an extrusion spring 12, one end of the limit rod 11 extends outwards through the limit groove and is connected with a limit plate, and the limit rod 11 enters the inside of limit holes on both sides of the plugboard 16 at the bottom of the clamping board 4 to be connected.

Referring to fig. 2, a plug rod 13 is longitudinally installed on one side of the bottom of the top plate 3, a first positioning block 14 is longitudinally added on the other side of the bottom of the top plate 3, a second positioning block 15 is fixedly installed on both sides of the lower portion of the inner side surface of the clamping plate 4, a plugboard 16 is transversely and fixedly installed on the bottom of the clamping plate 4, and the top plate 3 is connected with the clamping plate 4 and the outer shell 1.

Referring to fig. 3, handles are longitudinally installed on two sides of the top of the mounting plate 5, sliding blocks are fixedly installed on two sides of the mounting plate 5, sliding grooves are formed in the inner wall of the outer shell 1 corresponding to the sliding blocks, and the sliding blocks are installed in the sliding grooves so as to facilitate driving the main transformer 2 to be taken out from the outer shell 1.

The working principle of the device is as follows: the limiting rod 11 is pulled outwards, the limiting rod 11 is disconnected with limiting holes on two sides of the inserting plate 16 and is retracted into the limiting groove, the inserting rod 13 and the first positioning block 14 at the bottom are respectively separated from the jack 8 and the positioning groove 9 when the top plate 3 is lifted, the second positioning block 15 and the inserting plate 16 on the inner side face are respectively separated from the positioning groove 9 and the slot 10 when the clamping plate 4 is lifted, the handle added at the top of the mounting plate 5 is lifted by external force, the mounting plate 5 and the main transformer 2 at the top are lifted, and the sliding blocks on two sides of the mounting plate 5 move in the sliding grooves on the inner wall of the outer shell 1.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a transformer structure with leak protection magnetism function, includes shell body (1) and main transformer (2), its characterized in that: the main transformer (2) is arranged in the outer shell (1), a top plate (3) is transversely movably arranged at the top of the outer shell (1), a clamping plate (4) is longitudinally inserted in the front of the outer shell (1), a mounting plate (5) is transversely and movably arranged at the bottom of an inner cavity of the outer shell (1), magnetic isolation plates (6) are longitudinally arranged at two sides of the center of the mounting plate (5), a groove is formed in the top of the mounting plate (5), the bottom of the main transformer (2) is arranged in the groove, a magnetic coating is sprayed on the inner wall of the outer shell (1), and heat dissipation holes are formed in the inner wall of the outer shell (1);

the low-voltage side of main transformer (2) has installed aluminium system's rising seat (21), rising seat flange (22) are installed to the periphery of rising seat (21), transformer flange (23) are installed to the low-voltage side upper surface of main transformer (2), rising seat flange (22) are located the upper portion of transformer flange (23), and press from both sides between the two and be equipped with sealed pad (24), the upper portion of rising seat flange (22) still pastes and is equipped with copper ring (25), groove (26) have been seted up at copper ring (25) inboard border, run through spacing through screw structure (27) between copper ring (25), rising seat flange (22) and transformer flange (23).

2. The transformer structure with magnetic leakage prevention function according to claim 1, wherein: dust covers (7) are arranged at the center positions of the two sides of the outer shell (1), and are communicated with the air outlet ends of the radiating holes at the center positions of the two sides of the outer shell (1).

3. The transformer structure with magnetic leakage prevention function according to claim 1, wherein: the utility model discloses a shell, including shell body (1), jack (8) have been seted up vertically to top one side of shell body (1), the top opposite side of shell body (1) all vertically blocks and is equipped with constant head tank (9), slot (10) have all transversely been seted up to inner chamber bottom one side of shell body (1).

4. A transformer structure with magnetic leakage prevention function according to claim 3, characterized in that: limiting grooves are transversely formed in two sides of the inner wall of the slot (10), limiting rods (11) are transversely movably mounted in the limiting grooves, extrusion springs (12) are sleeved at the center positions of the outer surfaces of the limiting rods (11), and one ends of the limiting rods (11) extend outwards through the limiting grooves and are connected with limiting plates.

5. The transformer structure with magnetic leakage prevention function according to claim 1, wherein: the bottom of roof (3) is vertically installed inserted link (13), the bottom opposite side of roof (3) is vertically added and is equipped with first locating piece (14), the medial surface lower part both sides of cardboard (4) are all fixed mounting has second locating piece (15), the horizontal fixed mounting in bottom of cardboard (4) has picture peg (16).

6. The transformer structure with magnetic leakage prevention function according to claim 1, wherein: handles are longitudinally arranged on two sides of the top of the mounting plate (5), sliding blocks are fixedly arranged on two sides of the mounting plate (5), sliding grooves are formed in the inner wall of the outer shell (1) corresponding to the sliding blocks, and the sliding blocks are arranged in the sliding grooves.