CN206040383U - Transformer - Google Patents

Abstract

The embodiment of the utility model discloses a transformer. This transformer includes: shell (1), the sealed inner space and shaping for surrounding the iron core passageway of keeping apart with the inner space that surrounds, iron core (2) are passed the iron core passageway in shell (1) and are lain in outside the inner space of shell (1), insulating medium (3) hold in the inner space of shell (1), coil (4), hold in the inner space of shell (1) and the submergence in insulating medium (3) to orientate as some around iron core (2), shell (1) is supported on iron core (2) through support piece (5) to iron core (2) are supported on base (6), install the insulating part in transformer to the prevention forms the galvanic circle between support piece (5) and base (6). This transformer prevents to produce the heat loss of part and overheated.

Description

Transformator

Technical field

Embodiment of the present utility model is related to transformator, more particularly to the insulation configuration of tractive transformer.

Background technology

Tractive transformer is used to the transformator that the equipment of such as locomotive etc. provides power.The initiative part of tractive transformer Divide and be often referred to the parts such as coil, iron core.The active part (especially coil) of tractive transformer is logical due to resistance at work Elec-trocaloric effect and produce substantial amounts of heat.In traditional tractive transformer, whole active part is immersed in the insulation of fuel tank In oil, in order to efficiently radiate to the active part of transformator at work.But, it is whole due to tractive transformer Individual active part is immersed in insulating oil, and the volume for accommodating the fuel tank of whole active part will be very big, and this will take The confined space of the vehicles of such as locomotive etc..Meanwhile, for the whole active part of submergence, substantial amounts of insulating oil is needed, this The gross weight for also resulting in tractive transformer is significantly increased, and this is very not for the work of the vehicles of such as locomotive Profit, because the increase of the weight of tractive transformer will cause diminishing for the payload of the vehicles, and by increase to carrying The abrasion of the track of the vehicles.

Utility model content

Embodiment of the present utility model proposes only by the part immersion dielectric of tractive transformer to reduce fuel tank The amount of volume and required dielectric, so that reduce cumulative volume and the gross weight of tractive transformer.That is, only will be heating the tightest In the coil immersion dielectric of the tractive transformer of weight, and the iron core of tractive transformer is not then immersed in dielectric.

In this type of design, as coil and fuel tank need to be supported on iron core by single metallic supports, And whole tractive transformer is supported on metab, thus the various metals zero that may be included in passing through tractive transformer Part and form electrical circuit between the base of whole tractive transformer in the single metallic supports and for supporting, the wherein change The magnetic flux that depressor is produced at work may partially pass through the electrical circuit and produce faradic current in the electrical circuit, so as in structure Huge thermal losses and overheated is rapidly resulted in in the part of the electrical circuit.For this purpose, according to each embodiment of utility model, at this Appropriate insulation configuration is set in tractive transformer, to avoid forming undesirable electrical circuit in tractive transformer.

According to embodiment of the present utility model, there is provided a kind of transformator, including：Shell, sealing surround an inner space And be configured to around the iron core passage isolated with the inner space；Iron core, through the iron core passage in the shell simultaneously Outside the inner space of the shell；Dielectric, is contained in the inner space of the shell；Coil, In being contained in the inner space of the shell and it is immersed in the dielectric, and is positioned as around the iron core A part.The shell is supported on the iron core by support member, and the iron core is supported on base.Institute Insulating part is installed in stating transformator, to prevent galvanic circle to be formed between the support member and the base.

According to embodiment of the present utility model, the support member, the iron core and the base are connected by pull bar Together, and between the support member and the iron core, and/or insulation is provided between the iron core and the base Plate.

According to embodiment of the present utility model, insulation tube is provided with the rod outer sleeve, the insulation tube passes through described Support member, the iron core and the base.

According to embodiment of the present utility model, have nut in the one end fits of the pull bar, the nut with it is described Insulation spacer is provided between support member or the base.

According to embodiment of the present utility model, horizontal support piece, the horizontal support piece is additionally provided with the base Iron core described in cross-brace and the shell, are provided with insulation configuration to electrically insulate the support member in the horizontal support piece With the base.

According to embodiment of the present utility model, the transformator also includes adnexa mounting bracket, and which passes through insulation configuration The support member and the base is connected to, the support member is electrically insulated with the base.

According to embodiment of the present utility model, in the support member and the base any one and with its machinery even Insulating part is both provided between any conductive pieces for connecing.

According to embodiment of the present utility model, what any one in the support member and the base was mechanically connected All it is cased with all setting on insulation sleeve, and the screw rod of any one mechanical connection in the support member and the base on screw rod There is insulation spacer.

According to embodiment of the present utility model, the support member and the base are conductive.

According to embodiment of the present utility model, the transformator is tractive transformer.

The hull outside of transformator is located at according to the iron core of the transformator of embodiment of the present utility model, so that right The demand for being used for the amount of the dielectric of the active part of submergence transformator in housing tails off, so as to reduce the volume of transformator And weight.It is the support member for supporting housing in transformator is whole with for supporting by arranging appropriate insulation configuration The base electric isolution of transformator so that will not form the magnetic flux produced in surrounding transformator between support member and base and lead Electrical circuit, thus avoid and produce thermal losses and overheated in the conductive pieces of transformator.

Description of the drawings

Above and other purpose of the present utility model and characteristic will become with reference to the following detailed description to appended accompanying drawing Become apparent from, wherein：

Fig. 1 is the axonometric chart of the tractive transformer according to embodiment of the present utility model；

Fig. 2 illustrates the housing of the tractive transformer according to embodiment of the present utility model；

Fig. 3 is the schematic cross-section of the active part of the tractive transformer according to embodiment of the present utility model；

Fig. 4 is the axonometric chart at another visual angle of the tractive transformer according to embodiment of the present utility model；

Fig. 5 is the front view of the tractive transformer according to embodiment of the present utility model；

Fig. 6 is the side view of the tractive transformer according to embodiment of the present utility model；

Fig. 7 is the partial enlarged drawing at the labelling B1 in Fig. 5；

Fig. 8 is the partial enlarged drawing at the labelling B2 in Fig. 5；

Fig. 9 is the partial enlarged drawing at the labelling C in Fig. 6.

Make a general survey of the figures above, identical reference will be understood to refer to identical, similar or corresponding feature or Function.

Specific embodiment

Reference will be made now to embodiment of the present utility model, and one or more examples of embodiment are by shown in accompanying drawing Go out.Embodiment is provided by of the present utility model elaboration, and is not intended as to restriction of the present utility model.For example, make Feature shown or described by the part of one embodiment may be used to generate in another embodiment it is another enter The embodiment of one step.This utility model is intended to include these and other modifications for belonging to this utility model scope and spirit and becomes Change.

Fig. 1 is shown with the tractive transformer according to embodiment of the present utility model.The tractive transformer is used for pacifying It is attached on the vehicles of such as railcar train etc., is the electricity being available on the vehicles by the electrical power conversion from transmission line of electricity The voltage that motivation is used, advances so as to motor can draw the vehicles using the voltage after the conversion.

With traditional tractive transformer identical be, according to the tractive transformer of embodiment of the present utility model also by The primary coil and the secondary coil that are wrapped on iron core and the first alternating voltage being applied on primary coil is changed into from secondary Level coil output the second alternating voltage, wherein iron core for by the magnetic flux conduction produced in primary coil pass through secondary coil To produce induced electromotive force in secondary coil.As traditional tractive transformer, at work, coil and iron core also will Substantial amounts of heat, and thus the same demand with radiating can be produced due to the resistance of its own.

From unlike traditional tractive transformer, will not according to the tractive transformer of embodiment of the present utility model Coil and iron core (being referred to as active part) are radiated in being totally immersed into the dielectric (for example, insulating oil) of fuel tank, but Only efficient cooling will be carried out in the insulating oil of the coiler part immersion fuel tank for generating heat the most serious, and it is relatively light to generate heat Core portion then do not immerse in insulating oil and only radiated by air.Such design can be substantially reduced the volume of fuel tank with And required oil mass, so as to the weight for reducing tractive transformer space shared on a vehicle and bring for the vehicles Load.

For this purpose, there is concrete shell 1 as Figure 2-3 according to the tractive transformer of embodiment of the present utility model. The shell 1 can be combined by lateral wall 13, medial wall 15 and two end plates 14 and seal and form inner space 11, while shell 1 Medial wall 15 be also configured to around two iron core passages 12 isolating with inner space 11.Iron core passage 12 is in shell 1 The inner space 11 in portion the ft connection of the opening from the end plate 14 of both sides and shell.

Sealing in shell 1 is formed in inner space 11, around the two iron core passages 12, i.e., around two medial walls 15 are wound with coil 4 respectively (including primary coil and secondary coil).In addition, being internally filled with dielectric 3 in space 11. Thus, coil 4 is immersed in dielectric 3.

The iron core 2 of annular is through the two the iron core passages 12 in shell 1 and the coupling part at its two ends reaches ferrum Outside core passage 12 (i.e. the outside of the end plate 14 of shell 1).As iron core passage 12 is completely close with the inner space 11 of shell 1 Insulate from, therefore not by 3 submergences of insulating oil in shell 1 outside iron core 2 is fully located at the inner space 11 of shell 1. Meanwhile, because iron core 2 passes through iron core passage 12, and coil 4 internally to wind around iron core passage 12 in space 11, therefore enclose Coil 4 around two iron core passages 12 is also respectively around two supporting legs of iron core 2.So, not by the iron core 2 of insulating oil submergence Still can as the iron core in traditional transformator by the magnetic flux conduction produced in a coil in another coil.

As illustrated in figures 4-5, due to the iron core 2 and coil 4 in the tractive transformer according to embodiment of the present utility model Isolated and directly do not contacted with each other and support by the medial wall 15 of shell 1, shell 1 and its internal coil 4 and insulation are situated between The overall weight of matter 3 needs to be securely supported on iron core 2.For this purpose, the end plate 14 at the two ends of shell 1 is propped up by support member 5 Support the upper surface in the coupling part of the iron core 2 reached outside iron core passage 12.The support member 5 is typically angle steel, one Side and end plate 14 abreast against and be fixedly connected, and the upper surface of the another side vertical with this and iron core 2 is abreast supported By and be fixedly connected.And the coupling part of iron core 2 is then placed and secured on a base 6.Many pull bars 7 are each passed through support member 5th, on iron core 2 and base 6 perforation and its one end is locked by nut 71, so as to support member 5, iron core 2 and base 6 are by drawing Bar 7 is joined together.So, shell 1 is supported on iron core 2 by support member 5, and iron core 2 is supported on base 6 On.And base 6 can be rest directly upon on the base plate of the vehicles or appropriate position, tractive transformer is fixed to into friendship thus Logical instrument.

As 7 main in the vertical direction of pull bar positions shell 1 and iron core 2, in order to further fixed in a lateral direction Position shell 1 and iron core reliable cross-brace is provided for which, can also be additionally provided with horizontal support piece on base 6, with Laterally against iron core 2.Specifically, vertical supporting walls can be provided near the two ends of the coupling part of iron core on base 6 61, and 5 two ends of support member have downward extension 51 (referring to Fig. 7).Screw rod 62 passes through supporting walls 61 and support member 5 Hole on extension 51 and support block 63 is laterally resisted against iron core 2 coupling part end.By nut 64 by screw rod 62 two ends are locked so that support block 63 cross-brace iron core 2 and shell 1 securely.

According to embodiment of the present utility model, tractive transformer also has pump 8 and radiator 10, and which is installed in adnexa peace On dress support 9.Adnexa mounting bracket 9 is fixed on support member 5 and base 6.Pump 8 and radiator 10 and the inside inside shell 1 Space 11 connects.Pump 8 can be cooled down being extracted in radiator 10 by the dielectric that coil 4 is heated in inner space 11 Radiating, and and then send in inner space 11 to continue cooling coil 4 by the dielectric after cooling again.

As the iron core 2 of the tractive transformer according to embodiment of the present utility model does not have as traditional transformer It is immersed in insulating oil, but is externally exposed in environment, and other adnexaes of shell 1 and transformator is also supported on ferrum On core 2, while iron core 2 is also axially aligned and supported directly on base 6, therefore the directly contact of iron core 2 and the other parts in transformator Would be possible to result in galvanic circle so that can also pass through formed galvanic circle by the magnetic flux that iron core 2 conducts.This To cause induced electromotive force to be produced in the galvanic circle for being formed, and thus produce substantial amounts of heat in the galvanic circle so that Constituting and high temperature is produced in transformator part short time of the galvanic circle and overheated, this results even in the failure of transformator.Together When, the generation of substantial amounts of heat also results in the high thermal losses of transformator.

According to embodiment of the present utility model, in order to avoid by the contact between iron core 2 and the other parts of transformator Result in galvanic circle and produce problem above, the appropriate location in tractive transformer is provided with insulating part, to prevent to lead Electrical accessory is interconnected to form the loop that magnetic flux is extended there through.

Make as the support member 5 that the upper surface of iron core 2 is fixed is usually conducting metal, and 2 bottom of iron core is placed The base 6 of position is generally also made up of conducting metal, thus to especially avoid between support member 5 and base 6 by iron core 2 or Other conductive pieces form galvanic circle.

According to embodiment of the present utility model, insulation board 81 (see Fig. 5) can be provided between support member 5 and iron core 2, To prevent being conductively connected between support member 5 and iron core 2.

In addition, according to embodiment of the present utility model, can be provided between iron core 2 and base 6 insulation board 82 (see Fig. 5), preventing being conductively connected between iron core 2 and base 6.By insulation board 81 and 82, support member 5, iron core 2 and base 6 this The conduction that the magnetic flux surrounded in iron core 2 can not directly be formed between large volume of part in three transformators is returned Road.

In addition, according to embodiment of the present utility model, as pull bar 7 is generally also made of metal, thus can also arrange Support member 5, iron core 2 and base 6 are conductively connected with avoiding by pull bar 7 and form conductive returning by appropriate insulation measures again Road.For this purpose, referring to Fig. 8, being arranged with insulation tube 83 outside pull bar 7, the insulation tube 83 passes through support member 5, iron core 2 and base 6, So that pull bar 7 is electrically insulated with support member 5, iron core 2 and base 6, and prevent from the multiple laminations in iron core 2 being electrically connected by pull bar 7 It is connected together.It is known that iron core 2 is generally formed by multiple stalloy stackings insulated from each other, with while magnetic flux amount Avoid causing big vortex because of excessive core section product.Therefore, insulation tube 83 is also played and avoids pull bar 7 by iron core 2 The effect that multiple laminations are electrically connected.In addition, arranging between the nut 71 and support member 5 of the one end fits of pull bar 7 There is insulation spacer 84, support member 5 is isolated with nut 71, further to prevent support member 5 by nut 71 and thereon The parts such as anti-decylization are electrically connected with pull bar 7.Similarly, can be being also provided with felt pad between the other end of pull bar 7 and base 6 Piece (not shown), further to prevent the electrical connection between pull bar 7 and base 6.By in pull bar 7 and support member 5 and/or base Junction between 6 arranges insulating part, can prevent to form galvanic circle between support member 5, pull bar 7 and base 6, and so shape Into galvanic circle equally can produce induced electromotive force heat around the magnetic flux in iron core 2.

Similarly, iron core 2 is likely to by forming galvanic circle between horizontal support piece and support member 5 and base 6.For This, according to embodiment of the present utility model, as shown in fig. 7, arrange exhausted between the extension 51 of supporting walls 61 and support member 5 Edge block 66, to electrically insulate support member 5 and the supporting walls 61 on base 6.Meanwhile, insulation sleeve 65 can also be cased with screw rod 62 with Extension 51 of the screw rod 65 with support member 5 is electrically insulated.Furthermore it is also possible in nut 64 and the extension 51 of support member 5 Between arrange insulation spacer 67, the extension 51 of support member 5 is isolated with nut 64, further to prevent support member 5 Extension 51 is passed through the part such as nut 64 and anti-decylization thereon and is electrically connected with screw rod 62.

As the upper/lower terminal of the adnexa mounting bracket 9 for installing the adnexa such as pump 8 and radiator 10 is separately fixed to Support member 5 and base 6, therefore it is also advantageous that arrange exhausted in adnexa mounting bracket 9 with the junction of support member 5 and base 6 Edge configures to prevent from forming galvanic circle between support member 5 and base 6.For this purpose, as shown in figure 9, in adnexa mounting bracket 9 Insulation spacer 85 is provided between two ends and support member 5 and base 6.Screw rod 86 is screwed into support through the two ends of adnexa mounting bracket 9 In screw in part 5 and base 6,86 end of screw rod is locked by nut 87.Insulation sleeve 88 is cased with screw rod 86, by screw rod 86 are electrically insulated with adnexa mounting bracket 9 and nut 87, and also are provided between the two ends of nut 87 and adnexa mounting bracket 9 absolutely Edge pad 89, two ends of the nut 87 with adnexa mounting bracket 9 are electrically insulated.Thus, adnexa mounting bracket 9 and support member are prevented 5 and base 6 be conductively connected and form galvanic circle.It is of course also possible to only between adnexa mounting bracket 9 and support member 5 or Insulation configuration is set only between adnexa mounting bracket 9 and base 6 to prevent the electrical connection between support member 5 and base 6.

In addition, it is advantageous to any conduction of any one and mechanical connection in support member 5 and base 6 Insulating part is provided between part, with the electrical connection for preventing support member 5 and base 6 and between other conductive pieces around which. Thus, it is to avoid form the magnetic flux in iron core 2 between support member 5 and base 6 even around the galvanic circle of leakage field. For this purpose, insulation sleeve is cased with the screw rod that is mechanically connected of any one that can be in support member 5 and base 6, and with support The screw rod that any one in part 5 and base 6 is mechanically connected is provided with insulation spacer, with the junction with support member 5 and base 6 Insulation configuration is set, to avoid electrically connecting support member 5 and base 6 with other metal parts by conducting connecting part.

Although describing according to embodiment of the present utility model by example of tractive transformer above, it will be appreciated that Each embodiment of the present utility model is also applied for other kinds of transformator, and including but not limited to measuring transformer, auxiliary becomes Integrated transformator of depressor, Three-Phase Distribution Transformers, single phase distribution transformer and drive electronic converter etc..

Should be noted that, the above embodiments are given for describing principle of the present utility model, rather than limit which Scope；And it should be appreciated that modification can be taken in the case of without departing from spirit and scope of the present utility model and is become Change, to this skilled person will readily understand that.These modifications and variations are considered as in this utility model and appended power Within the scope of profit is required.Protection domain of the present utility model is defined by the appended claims.In addition, in the claims Any reference should not be construed as limitations on claims.The use of verb " including " and its variant is not precluded from Element or step beyond existing described in claim.Indefinite article "a" or "an" before element or step is not excluded the presence of Multiple such elements.

Claims (10)

1. a kind of transformator, it is characterised in that include：

Shell (1), sealing are surrounded an inner space and are configured to around the iron core passage isolated with the inner space；

Iron core (2), through the iron core passage in the shell (1) and be located at the shell (1) the inner space it Outward；

Dielectric (3), is contained in the inner space of the shell (1)；

Coil (4), in being contained in the inner space of the shell (1) and is immersed in the dielectric (3), and quilt It is positioned about a part for the iron core (2)；

Wherein, described shell (1) is supported on the iron core (2) by support member (5), and the iron core (2) is supported On base (6)；And

Insulating part, to prevent to form galvanic circle between the support member (5) and the base (6).

2. transformator according to claim 1, it is characterised in that support member (5), the iron core (2) and the bottom Seat (6) is joined together by pull bar (7), and between the support member (5) and the iron core (2), and/or described Be provided between iron core (2) and the base (6) insulation board (81,82).

3. transformator according to claim 2, it is characterised in that be arranged with insulation tube (83), institute outside the pull bar (7) Insulation tube is stated through the support member (5), the iron core (2) and the base (6).

4. transformator according to claim 3, it is characterised in that have nut (71) in the one end fits of the pull bar (7), Insulation spacer (84) is provided between the nut (71) and the support member (5) or the base (6).

5. transformator according to claim 2, it is characterised in that be additionally provided with horizontal support piece on the base (6), institute Iron core (2) described in horizontal support piece cross-brace and the shell (1) is stated, and insulation configuration is provided with the horizontal support piece To electrically insulate support member (5) and the base (6).

6. transformator according to claim 2, it is characterised in that also including adnexa mounting bracket (9), which passes through insulation and matches somebody with somebody Put and be connected to the support member (5) and the base (6), the support member (5) is electrically insulated with the base (6).

7. the transformator according to any one of claim 1-6, it is characterised in that at the support member (5) and the bottom Any one in seat (6) is both provided with insulating part and any conductive pieces of mechanical connection between.

8. the transformator according to any one of claim 1-6, it is characterised in that with the support member (5) and described All be cased with insulation sleeve on the screw rod that any one in base (6) is mechanically connected, and with the support member (5) and the base (6) insulation spacer is designed with the screw rod that any one in is mechanically connected.

9. the transformator according to any one of claim 1-6, it is characterised in that support member (5) and the base (6) it is conductive.

10. the transformator according to any one of claim 1-6, it is characterised in that the transformator is tractive transformer.