CN206991876U - A kind of subway type transformer - Google Patents

Abstract

A kind of subway type transformer, including transformer body, it is welded on transformer body for the connector lug of transformer body to be contained in into bucker therein and the vacuum circuit breaker being arranged in bucker, and vacuum circuit breaker is connected between cable and connector lug, the cable aperture that current supply cable passes through is provided with the side wall of the bucker, waterproof sealing structure is provided with cable aperture.The utility model is by the way that the connector lug of transformer top and binding post are arranged in the bucker of closing, then the cable for wiring is extend into bucker by the cable aperture on bucker is connected with connector lug and binding post, when cable and cable aperture coordinate using special waterproof sealing structure, so pass through the cooperation of waterproof sealing structure and bucker, the waterproof sealing of connector lug of transformer and binding post is realized, realizes the water-proof function of transformer.

Description

A kind of subway type transformer

Technical field

It the utility model is related to the transformer that electric field is used, specifically a kind of subway type transformer.

Background technology

Transformer is the device for changing alternating voltage using the principle of electromagnetic induction, and main member is primary coil, secondary Level coil and iron core (magnetic core), major function have voltage transformation, current transformation, impedance conversion, isolation, voltage stabilizing (magnetic saturation transformation Device) etc..Transformer can be divided into, according to use, power transformer and special transformer (electric furnace change, rectification change, industrial frequency experiment transformation Device, pressure regulator, mining change, audio-frequency transformer, intermediate-frequency transformer, high frequency transformer, impact transformer, instrument transformer, electronics Transformer, reactor, transformer etc.).

Existing transformer is typically all outdoor installation, although taking certain waterproof measure, is functioned only as Rainwater-proof effect in the case of outdoor, if transformer is in lower position, and during the burst disaster such as damage caused by waterlogging or flood, hold very much Easily transformer is dipped into water, in this case, because existing transformer is poorly sealed careful, it is easy to transformation can be caused Device inner inlet causes the situation of transformer short-circuit.

Utility model content

In order to solve the problems, such as existing transformer sealing structure imprecision, water-proof function, the utility model can not be realized A kind of subway type transformer is provided, the transformer by the connector lug of transformer top and binding post by being arranged on a closing In bucker, the cable of then wiring is extend into bucker with connecing by the cable aperture on bucker and waterproof sealing structure The end of a thread connects with binding post, and waterproof sealing structure is the interference fit of the sealing ring and cable by two silica gel materials, so as to The strict sealing between cable and cable aperture is realized, and the filling for setting closing glue to be formed between two sealing rings is close Blocking, waterproof sealing effect is further enhancing, and vacuum circuit breaker is set in bucker, so as in the feelings of contingency leak Under condition, circuit is cut off in time.

The utility model is that technical scheme is used by solving above-mentioned technical problem：A kind of subway type transformer, including Transformer body, it is welded on transformer body for the connector lug of transformer body to be contained in into bucker therein and set The vacuum circuit breaker in bucker is put, and vacuum circuit breaker is connected between cable and connector lug, the side wall of the bucker On be provided with the cable aperture that current supply cable passes through, be provided with waterproof sealing structure in cable aperture, the waterproof sealing structure includes symmetrical It is stuck in the sealing ring made of silica gel material at cable aperture both ends on bucker, the external diameter of threading hole and cable in the middle part of sealing ring To be interference fitted, the filling sealing-plug between two sealing rings to be formed after filling closing gelling admittedly.

The both ends of the cable aperture extend out the snap ring to be formed greater diameter than cable bore dia, and sealing ring by bulge and Portion's two parts are stoppered to form, wherein, the external diameter of bulge is identical with the internal diameter of cable aperture, stoppers the external diameter in portion and the internal diameter of snap ring Identical, the thickness for stoppering portion is more than the thickness of snap ring.

The cable is connected using plug-in structure, and the plug-in structure includes female and the subheader to cooperate, institute Stating female includes insulating sleeve, the conductive deck for being arranged on insulating sleeve bottom and some arcs of the closing of the one end open other end Shape fixed plate, wherein, the bottom of conductive deck is provided with the wire for drawing insulating sleeve, the outward flange of conductive deck and centre bit Put and be respectively arranged with ring baffle and round boss, the bottoms of some arc fixed plates be movably arranged on ring baffle and In the annular groove formed between round boss, so that every piece of arc fixed plate can live in the radial direction of annular groove interior edge annular groove It is dynamic；Upper and lower part on the outside of all arc fixed plates is provided with ring spring, so that between all arc fixed plates The cavity for subheader insertion is surrounded, elastic rubber sleeve is provided between arc fixed plate and insulating sleeve side wall, the circle is convex Platform is stretched into cavity, and its end set has the arc-shaped recess for blocking subheader end；The subheader includes an insulation leather sheath and one Conducting rod in end insertion insulation leather sheath, the metal-cored connection of the one end and cable of conducting rod in insulation leather sheath, the other end With the conductive head for extending into cavity and being contacted with arc-shaped recess.

Described surround has gap between the arc fixed plate of cavity and round boss；The conductive deck passes through its bottom The connected unit of setting is threadedly coupled with the bottom wall of insulating sleeve.

The ring baffle is inclined domatic towards the side wall of arc fixed plate, and this is domatic exhausted from bottom up direction The sidewall slope of edge sleeve.

The bottom outside of the elastic rubber sleeve is provided with the extension between insertion ring baffle and insulating sleeve side wall, and prolongs Extending portion forms the chuck structure being stuck on ring baffle with elastic rubber sleeve junction.

The upper and lower part of the arc fixed plate lateral wall is respectively arranged with the deep-slotted chip breaker of positioning ring spring, and arc is solid The upper and lower part of fixed board madial wall is respectively arranged with arc convex and rectangular preiection, and shape between arc convex and rectangular preiection Be in depression portion；The bottom of arc fixed plate is movably arranged in annular groove by platform, and is formed between platform and rectangular preiection The chuck being engaged with round boss side wall；Slope between the top of arc fixed plate and arc convex to extend out from bottom to top Face, so that the conductive head of subheader can be slided on this is domatic and snapped onto after overcoming the elastic force of ring spring in arc-shaped recess； The limit card slot of annular is provided with the conducting rod of the subheader, the limit card slot matches with the arc convex on arc fixed plate Close, conductive head is locked in cavity.

It is respectively arranged with around the upper and lower part of some arc fixed plate lateral walls and limits arc fixed plate maximum The spacing ring of spreading range.

The female connecting hole of tool, the connecting hole and electricity are provided with one end in the conducting rod insertion insulation leather sheath The connector threaded connection of metal-cored end in cable.

The material of transformer case described in the utility model is aluminium alloy.

In the utility model, the annular cambered depression extended out is provided with the cable aperture, so that the closing gelling of filling Gu the protruding ring being engaged with this arc-shaped recess is formed after；Or helical form depression is distributed with cable aperture interior edge its internal diameter.

In the utility model, the ring spring has 4, and every two are one group, and two groups of ring springs surround set respectively Put the upper and lower part on the outside of arc fixed plate.

Compared with prior art, the invention has the advantages that：

1）The utility model by the way that the connector lug of transformer top and binding post are arranged in the bucker of a closing, and The cable for wiring is extend into bucker by the cable aperture on bucker afterwards is connected with connector lug and binding post, in cable Using special waterproof sealing structure when coordinating with cable aperture, so by the cooperation of waterproof sealing structure and bucker, realize The waterproof sealing of connector lug of transformer and binding post, realize the water-proof function of transformer；

2）Two sealing rings are made by using silica gel material in waterproof sealing structure of the present utility model, cable penetrate this two After in individual sealing ring, because both are interference fitted, therefore, cable is penetrated after sealing ring when penetrating again in cable aperture, due to extruding Deformation so that deadend structure is respectively formed between sealing ring and cable aperture and sealing ring and cable, and in two sealings Filling closing glue between ring, so form filling sealing-plug after closing gelling is solid, further enhancing sealing effectiveness, completely every The infiltration of water absolutely；

3）Vacuum circuit breaker is provided with bucker of the present utility model, can in the case of there is leak in contingency To cut off circuit in time, transformer and supply network are protected；

4）Cable of the present utility model is connected using plug-in structure, not only easy to connect quick, and is completely embedded；Insert The female for pulling out formula structure matches somebody with somebody the cavity being encircled into for subheader insertion, Er Qie by using some arc fixed plates and ring spring Arc-shaped recess is provided with cavity, the arc-shaped recess coordinates with subheader, so as to not only ensure that the compactness of contact, Er Qieti The high tightness of connection, subheader overcomes be inserted into cavity after the elastic force of ring spring after, under the effect of ring spring elastic force, Arc fixed plate clamping subheader can be made, so as to improve the tightness of connection；

5）It is movable in the annular groove that the lower end of arc fixed plate can be formed between ring baffle and round boss, and outside Portion is provided with elastic rubber sleeve, can make subheader after being inserted into cavity, and cavity volume becomes big, and then subheader is produced necessarily Snap action.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the schematic diagram of the utility model waterproof sealing structure；

Fig. 3 is the structural representation of the utility model cable connection female；

Fig. 4 is the structural representation of the utility model cable connection subheader；

Fig. 5 is the structural representation of the utility model arc fixed plate；

Reference：1st, transformer body, 2, bucker, 201, arc-shaped recess A, 202, snap ring, 3, cable, 301, connection Head, 4, waterproof sealing structure, 401, sealing ring, 4011, stopper portion, 4012, bulge, 402, filling sealing-plug, 5, vacuum breaks Road device, 6, insulating sleeve, 7, elastic rubber sleeve, 701, extension, 702, patchhole, 703, shielding part, 8, conductive deck, 801, even Connect platform, 802, round boss, 803, wire, 804, arc-shaped recess, 805, ring baffle, 806, annular groove, 9, arc fixed plate, 901st, cavity, 902, deep-slotted chip breaker, 903, platform, 904, chuck, 905, rectangular preiection, 906, depressed part, 907, arc convex, 908th, it is domatic, 10, ring spring, 11, spacing ring, 12, conducting rod, 1201, conductive head, 1202, limit card slot, 1203, connection Hole, 1204, insulator, 1205, conductive core, 13, insulation leather sheath.

Embodiment

As illustrated, a kind of subway type transformer, including transformer body 1, it is welded on transformer body 1 and is used to become The connector lug of depressor body 1 is contained in bucker 2 therein and the vacuum circuit breaker 5 being arranged in bucker 2, and vacuum is broken Road device 5 is connected between cable 3 and connector lug, and the cable aperture that current supply cable 3 passes through is provided with the side wall of the bucker 2, electricity Waterproof sealing structure 4 is provided with cable hole, the waterproof sealing structure 4 include symmetrically being stuck in cable aperture both ends on bucker 2 by Sealing ring 401 made of silica gel material, the threading hole at the middle part of sealing ring 401 are interference fit with the external diameter of cable 3, and two seal The filling sealing-plug 402 formed between ring 401 for filling closing gelling after solid.

Be basic embodiment of the present utility model above, can more than on the basis of further improved, optimized and limited It is fixed：

Such as, the both ends of the cable aperture extend out the snap ring 202 to be formed greater diameter than cable bore dia, and sealing ring 401 By bulge 4012 and stopper the two parts of portion 4011 and form, wherein, the external diameter of bulge 4012 is identical with the internal diameter of cable aperture, plug The external diameter in tight portion 4011 is identical with the internal diameter of snap ring 202, and the thickness for stoppering portion 4011 is more than the thickness of snap ring 202；In bulge 4012 and the threading hole of 4011 centrally disposed insertion of portion is stoppered, and the external diameter of the internal diameter of threading hole and cable 3 is interference fit, this Sample is after cable 3 is penetrated in threading hole, due to crimp so that bulge 4012 can be sufficient filling with cable 3 and cable aperture Gap, and stopper the thickness of the thickness also greater than snap ring 202 in portion 4011, so that stoppering portion 4011 also can be with snap ring 202 It is fitted close, so as to enhance sealing performance；

And for example, the arc-shaped recess A201 extended out is provided with the cable aperture, so as to be formed after the closing gelling of filling is solid The protruding ring being engaged with this arc-shaped recess A201, the presence of protruding ring, change between cable aperture inwall and filling sealing-plug 402 Contact surface, so as to further enhancing the performance of waterproof sealing, or, helical form is distributed with described its internal diameter of cable aperture interior edge Depression, meaning existing for helical form depression, actually also for the contact changed between cable aperture inwall and filling sealing-plug 402 Face, so as to further enhance the performance of waterproof sealing；The construction method of above-mentioned waterproof sealing structure 4 is：Cable 3 is passed through first Sealing ring 401 on the outside of cable aperture on bucker 2, and inside transformer is stretched into after being penetrated cable aperture, then again will Sealing ring 401 on the inside of cable aperture is enclosed on cable 3, and the sealing ring 401 is tucked into the inner side of cable aperture, then from Injection closing glue in the outer lateral cable aperture of cable aperture, is finally tucked into cable by another sealing ring 401 worn on cable 3 again Kong Zhong；

And for example, for the cable 3 using the connection of plug-in structure, the plug-in structure includes female and the son to cooperate Head, the female include the insulating sleeve 6 of one end open other end closing, be arranged on the conductive deck 8 of the bottom of insulating sleeve 6 with And some arc fixed plates 9, wherein, the bottom of conductive deck 8 is provided with the wire 803 for drawing insulating sleeve 6, conductive deck 8 Outward flange and center be respectively arranged with ring baffle 805 and round boss 802, the bottom of some arc fixed plates 9 Portion is movably arranged in the annular groove 806 formed between ring baffle 805 and round boss 802, so that every piece of arc is fixed Plate 9 can be in the radially movable of the interior edge annular groove 806 of annular groove 806；Around the upper and lower part in all outsides of arc fixed plate 9 Ring spring 10 is provided with, so as to surround the cavity 901 for subheader insertion between all arc fixed plates 9, is fixed in arc Elastic rubber sleeve 7 is provided between plate 9 and the side wall of insulating sleeve 6, the round boss 802 is stretched into cavity 901, and its end is set It is equipped with the arc-shaped recess 804 for blocking subheader end；The subheader is included in an insulation leather sheath 13 and one end insertion insulation leather sheath 13 Conducting rod 12, the metal-cored connection of one end and cable 3 of the conducting rod 12 in insulation leather sheath 13, the other end, which has, to be extend into Cavity 901 and the conductive head 1201 contacted with arc-shaped recess 804；

Further, there is gap between the arc fixed plate 9 and round boss 802 for surrounding cavity 901；It is described to lead The connected unit 801 that electric card seat 8 is set by its bottom is threadedly coupled with the bottom wall of insulating sleeve 6；

Further, the side wall of the ring baffle 805 towards arc fixed plate 9 is inclined domatic, and this is domatic certainly The bottom up sidewall slope towards insulating sleeve 6；

Further, the bottom outside of the elastic rubber sleeve 7 is provided with insertion ring baffle 805 and the side wall of insulating sleeve 6 Between extension 701, and extension 701 and the junction of elastic rubber sleeve 7 form the chuck structure being stuck on ring baffle 805；

Further, the upper and lower part of the lateral wall of arc fixed plate 9 is respectively arranged with positioning ring spring 10 Deep-slotted chip breaker 902, the upper and lower part of the madial wall of arc fixed plate 9 are respectively arranged with arc convex 907 and rectangular preiection 905, and Depressed part 906 is formed between arc convex 907 and rectangular preiection 905；The bottom of arc fixed plate 9 is set by the activity of platform 903 Put in annular groove 806, and the chuck being engaged with the side wall of round boss 802 is formed between platform 903 and rectangular preiection 905 904；It is domatic 908 extended out from bottom to top between the top of arc fixed plate 9 and arc convex 907, so that the conduction of subheader First 1201 can slide on domatic 908 at this and be snapped onto after overcoming the elastic force of ring spring 10 in arc-shaped recess 804；The son The limit card slot 1202 of annular is provided with the conducting rod 12 of head, the limit card slot 1202 and the arc on arc fixed plate 9 are convex Play 907 to be engaged, conductive head 1201 is locked in cavity 901；

Further, it is respectively arranged with restriction arc around the upper and lower part of some lateral walls of arc fixed plate 9 The spacing ring 11 of the maximum extent of shape fixed plate 9；

Further, it is provided with the female connection of tool on one end in the insertion of the conducting rod 12 insulation leather sheath 13 Hole 1203, the connecting hole 1203 are threadedly coupled with the connector 301 of metal-cored end in cable 3；

For another example, the material of the transformer case 1 and bucker 2 is aluminium alloy；

Again for another example, the ring spring 10 has 4, and every two are one group, and two groups of ring springs 10 are respectively around setting In the upper and lower part in the outside of arc fixed plate 9；

Finally, in order to solve the problems, such as the plug-in structurally waterproof of whole cable, following structure can be used：

First, the material selection silica gel material of elastic rubber sleeve 7, its height is concordant with arc fixed plate 9, and top also has There is the shielding part 703 of phase same material, that is to say, that integral shielding part 703 is provided with the top of elastic rubber sleeve 7, is being covered A patchhole 702 passed through for subheader is opened in portion 703, and patchhole 702 is interference fitted with subheader；

Then, cover plate is set on the top of insulating sleeve 6, shielding part 703 and elastic rubber sleeve 7 are entirely sealed in by cover plate Wherein, there is the hole with the position of patchhole 702 and size all same on cover plate；

Meanwhile the conducting rod 12 of subheader makes following structure, inside is a conductive core being connected with conductive head 1201 1205, the outer wrap insulator 1204 of conductive core 1205, the other end of conductive core 1205 contacts with metal-cored in cable 3, absolutely The limit card slot 1202 of annular is provided with edge body 1204, the limit card slot 1202 on the upper inner wall of arc fixed plate 9 with setting Some arc convex 907 are engaged；Moreover, it is inserted into subheader in cavity 901, conductive head 1201 and the clamping of arc-shaped recess 804 When, the end of insulation leather sheath 13 can extend into patchhole 702；

After said structure, after the conducting rod 12 of subheader is inserted into cavity 901 by patchhole 702, due to son Head is interference fit with cavity 901, so extending out arc fixed plate 9 and then extruding elastic rubber sleeve 7, because elastic rubber sleeve 7 is Silica gel material, therefore, elastic rubber sleeve 7 deforms, and then patchhole 702 is diminished, so as to improve sealing performance.

Claims (9)

1. A kind of 1. subway type transformer, it is characterised in that：Including transformer body（1）, be welded on transformer body（1）On be used for By transformer body（1）Connector lug be contained in bucker therein（2）And it is arranged on bucker（2）Interior vacuum circuit breaker （5）, and vacuum circuit breaker（5）It is connected to cable（3）Between connector lug, the bucker（2）Side wall on be provided with power supply Cable（3）The cable aperture passed through, waterproof sealing structure is provided with cable aperture（4）, the waterproof sealing structure（4）Including being symmetrically stuck in Bucker（2）The sealing ring made of silica gel material at upper cable aperture both ends（401）, sealing ring（401）The threading hole at middle part with Cable（3）External diameter for interference fit, two sealing rings（401）Between the filling sealing-plug that is formed for filling closing gelling after solid （402）.
2. A kind of 2. subway type transformer according to claim 1, it is characterised in that：The both ends of the cable aperture extend out to be formed Greater diameter than the snap ring of cable bore dia（202）, and sealing ring（401）By bulge（4012）With stopper portion（4011）Two Divide and form, wherein, bulge（4012）External diameter it is identical with the internal diameter of cable aperture, stopper portion（4011）External diameter and snap ring （202）Internal diameter it is identical, stopper portion（4011）Thickness be more than snap ring（202）Thickness.
3. A kind of 3. subway type transformer according to claim 1, it is characterised in that：The cable（3）Using plug-in knot Structure is connected, and the plug-in structure includes female and the subheader to cooperate, and the female is closed including the one end open other end Insulating sleeve（6）, be arranged on insulating sleeve（6）The conductive deck of bottom（8）And some arc fixed plates（9）, wherein, lead Electric card seat（8）Bottom be provided with extraction insulating sleeve（6）Wire（803）, conductive deck（8）Outward flange and center It is respectively arranged with ring baffle（805）And round boss（802）, some arc fixed plates（9）Bottom activity set In ring baffle（805）And round boss（802）Between the annular groove that is formed（806）It is interior, so that every piece of arc fixed plate（9） Can be in annular groove（806）Interior edge annular groove（806）It is radially movable；Around all arc fixed plates（9）The top in outside is with Portion is provided with ring spring（10）, so that all arc fixed plates（9）Between surround for subheader insertion cavity（901）, Arc fixed plate（9）With insulating sleeve（6）Elastic rubber sleeve is provided between side wall（7）, the round boss（802）Stretch into cavity （901）It is interior, and its end set has the arc-shaped recess for blocking subheader end（804）；The subheader includes an insulation leather sheath（13） Insulation leather sheath is inserted with one end（13）Interior conducting rod（12）, conducting rod（12）Positioned at insulation leather sheath（13）Interior one end and cable （3）Metal-cored connection, the other end have extend into cavity（901）And and arc-shaped recess（804）The conductive head of contact（1201）.
4. A kind of 4. subway type transformer according to claim 3, it is characterised in that：It is described to surround cavity（901）Arc Fixed plate（9）With round boss（802）Between there is gap；The conductive deck（8）The connected unit set by its bottom （801）With insulating sleeve（6）Bottom wall threaded connection.
5. A kind of 5. subway type transformer according to claim 3, it is characterised in that：The ring baffle（805）Towards arc Shape fixed plate（9）Side wall to be inclined domatic, and this is domatic from bottom up towards insulating sleeve（6）Sidewall slope.
6. A kind of 6. subway type transformer according to claim 3, it is characterised in that：The elastic rubber sleeve（7）Bottom outside Side is provided with insertion ring baffle（805）With insulating sleeve（6）Extension between side wall（701）, and extension（701）With elasticity Gum cover（7）Junction forms and is stuck in ring baffle（805）On chuck structure.
7. A kind of 7. subway type transformer according to claim 3, it is characterised in that：The arc fixed plate（9）Lateral wall Upper and lower part be respectively arranged with positioning ring spring（10）Deep-slotted chip breaker（902）, arc fixed plate（9）The top of madial wall Arc convex is respectively arranged with bottom（907）And rectangular preiection（905）, and arc convex（907）And rectangular preiection（905）It Between form depressed part（906）；Arc fixed plate（9）Bottom pass through platform（903）It is movably arranged on annular groove（806）It is interior, and Platform（903）And rectangular preiection（905）Between formed and round boss（802）The chuck that side wall is engaged（904）；Arc is fixed Plate（9）Top and arc convex（907）Between for extend out from bottom to top it is domatic（908）, so that the conductive head of subheader （1201）Can be domatic at this（908）It is upper to slide and overcome ring spring（10）Elastic force after snap onto arc-shaped recess（804）It is interior； The conducting rod of the subheader（12）On be provided with annular limit card slot（1202）, the limit card slot（1202）With arc fixed plate （9）On arc convex（907）It is engaged, by conductive head（1201）It is locked in cavity（901）It is interior.
8. A kind of 8. subway type transformer according to claim 3, it is characterised in that：Around some arc fixed plates （9）The upper and lower part of lateral wall is respectively arranged with restriction arc fixed plate（9）The spacing ring of maximum extent（11）.
9. A kind of 9. subway type transformer according to claim 3, it is characterised in that：The conducting rod（12）Insert insulated hull Set（13）The female connecting hole of tool is provided with interior one end（1203）, the connecting hole（1203）With cable（3）Interior metal The connector of core end（301）Threaded connection.