CN107170551A - 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, it is provided with the side wall of the bucker in the cable aperture that current supply cable is passed through, cable aperture and is provided with waterproof sealing structure.The present invention is by the way that the connector lug and binding post of transformer top 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, the water-proof function of transformer is realized.

Description

A kind of subway type transformer

Technical field

The present invention relates 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 takes certain waterproof measure, but functions 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, holds 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.

The content of the invention

The problem of in order to solve existing transformer sealing structure imprecision, can not realize water-proof function, the present invention is provided A kind of subway type transformer, the transformer is by the way that the connector lug and binding post of transformer top to be arranged on to the waterproof of a closing In cover, the cable of then wiring is extend into bucker and connector lug by the cable aperture and waterproof sealing structure on bucker With binding post connection, waterproof sealing structure is the interference fit of sealing ring by two silica gel materials and cable, so as to realize Strict sealing between cable and cable aperture, and the filling sealing of closing glue formation is set between two sealing rings Plug, further enhancing waterproof sealing effect, and set vacuum circuit breaker in bucker, so that in the situation of contingency leak Under, circuit is cut off in time.

The present invention be solve the technical scheme that is used of above-mentioned technical problem for：A kind of subway type transformer, including transformation Device body, be welded on transformer body be used for the connector lug of transformer body is contained in bucker therein and is arranged on Vacuum circuit breaker in bucker, and vacuum circuit breaker is connected between cable and connector lug, is set on the side wall of the bucker It is equipped with the cable aperture that current supply cable is passed through, cable aperture and is provided with waterproof sealing structure, the waterproof sealing structure includes symmetrically being stuck in The external diameter of threading hole and cable on bucker in the middle part of the sealing ring being made up of silica gel material at cable aperture two ends, sealing ring was It is full of cooperation, the filling sealing-plug formed between two sealing rings for filling closing gelling after solid.

The two 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 composition is stoppered, 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 cooperated, institute State insulating sleeve of the female including the closing of the one end open other end, be arranged on the conductive deck and some arcs of insulating sleeve bottom 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 in annular groove along annular groove radial direction live 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 inserted for subheader 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 is provided with 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, conducting rod is located at one end in insulation leather sheath and the metal-cored connection of cable, 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 from bottom up towards absolutely 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 shape between arc convex and rectangular preiection, and 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 spacing neck of annular is provided with the conducting rod of the subheader, the spacing neck matches with the arc convex on arc fixed plate Close, conductive head is locked in cavity.

It is maximum that restriction arc fixed plate is respectively arranged with around the upper and lower part of some arc fixed plate lateral walls 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 of the present invention is aluminium alloy.

In the present invention, the annular cambered depression extended out is provided with the cable aperture, so that after the closing gelling of filling is solid Form the protruding ring being engaged with this arc-shaped recess；Or, helical form depression is distributed with along its internal diameter in cable aperture.

In the present invention, the ring spring has 4, and every two are one group, and two groups of ring springs are circumferentially positioned at respectively Upper and lower part on the outside of arc fixed plate.

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

1）The present invention is by the way that the connector lug and binding post of transformer top are arranged in the bucker of a closing, then for connecing The cable of line is extend into bucker by the cable aperture on bucker and is connected with connector lug and binding post, in cable and cable aperture Using special waterproof sealing structure during cooperation, so by the cooperation of waterproof sealing structure and bucker, transformer is realized The waterproof sealing of connector lug and binding post, realizes the water-proof function of transformer；

2）Two sealing rings are made by using silica gel material in the waterproof sealing structure of the present invention, and cable penetrates the two sealing rings After interior, because both are interference fitted, therefore, cable is penetrated when penetrating again in cable aperture after sealing ring, due to crimp so that Deadend structure is respectively formed between sealing ring and cable aperture and sealing ring and cable, and is filled between two sealing rings Glue is closed, so filling sealing-plug is formed after closing gelling is solid, further enhancing sealing effectiveness, oozing for water has been completely cut off completely Thoroughly；

3）Vacuum circuit breaker is provided with the bucker of the present invention, so as in the case of just in case leak occur, can cut in time Deenergizing, protects transformer and supply network；

4）The cable of the present invention is connected using plug-in structure, not only easy to connect quick, and is completely embedded；Plug-in structure Female match somebody with somebody the cavity for being encircled into and being inserted for subheader by using some arc fixed plates and ring spring, and set in cavity Arc-shaped recess is equipped with, the arc-shaped recess coordinates with subheader, so as to not only ensure that the compactness of contact, and also improves connection Tightness, subheader overcomes be inserted into after the elastic force of ring spring in cavity after, under the effect of ring spring elastic force, arc can be made Shape fixed plate clamping subheader, 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 sets Elastic rubber sleeve is equipped with, subheader can be made after being inserted into cavity, cavity volume becomes big, and then certain clamping is produced to subheader Effect.

Brief description of the drawings

Fig. 1 is structural representation of the invention；

Fig. 2 is the schematic diagram of waterproof sealing structure of the present invention；

Fig. 3 is the structural representation of cable connection female of the present invention；

Fig. 4 is the structural representation of cable connection subheader of the present invention；

Fig. 5 is the structural representation of arc fixed plate of the present invention；

Reference：1st, transformer body, 2, bucker, 201, arc-shaped recess A, 202, snap ring, 3, cable, 301, connector, 4th, waterproof sealing structure, 401, sealing ring, 4011, stopper portion, 4012, bulge, 402, filling sealing-plug, 5, vacuum circuit breaker Device, 6, insulating sleeve, 7, elastic rubber sleeve, 701, extension, 702, patchhole, 703, shielding part, 8, conductive deck, 801, connection 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, spacing neck, 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 disconnected Road device 5 is connected between cable 3 and connector lug, and the cable aperture that current supply cable 3 is passed 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 two ends on bucker 2 by The sealing ring 401 that silica gel material is made, the threading hole at the middle part of sealing ring 401 is interference fit, two sealings with the external diameter of cable 3 The filling sealing-plug 402 formed between ring 401 for filling closing gelling after solid.

Above for the present invention basic embodiment, can more than on the basis of further improved, optimized and limited：

Such as, the two ends of the cable aperture extend out the snap ring 202 to be formed greater diameter than cable bore dia, and sealing ring 401 is by swollen Swollen portion 4012 is constituted with the two parts of portion 4011 are stoppered, wherein, the external diameter of bulge 4012 is identical with the internal diameter of cable aperture, stoppers portion 4011 external diameter 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 With the threading hole of the centrally disposed insertion in the portion that stoppers 4011, and the external diameter of internal diameter and the cable 3 of threading hole is interference fit, is so existed After cable 3 is penetrated in threading hole, due to crimp so that bulge 4012 can be sufficient filling with the gap of cable 3 and cable aperture, And stopper the thickness of the thickness also greater than snap ring 202 in portion 4011, so that stopper portion 4011 also can closely match somebody with somebody with snap ring 202 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 and this after the closing gelling of filling is solid The protruding ring that arc-shaped recess A201 is engaged, the presence of protruding ring changes connecing between cable aperture inwall and filling sealing-plug 402 Contacting surface, so as to further enhancing the performance of waterproof sealing, or, along its internal diameter helical form is distributed with the cable aperture recessed Fall into, the meaning that helical form depression is present, 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 penetrated inside transformer is stretched into after 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, is finally tucked into cable by another sealing ring 401 worn on cable 3 again in the outer lateral cable aperture of cable aperture Kong Zhong；

And for example, the cable 3 is using the connection of plug-in structure, and the plug-in structure includes female and the subheader cooperated, The female include the one end open other end close insulating sleeve 6, be arranged on the bottom of insulating sleeve 6 conductive deck 8 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 are respectively arranged with ring baffle 805 and round boss 802, the bottom of some arc fixed plates 9 It is movably arranged in the annular groove 806 formed between ring baffle 805 and round boss 802, so that every piece of arc fixed plate 9 Can be in annular groove 806 along the radially movable of annular groove 806；Upper and lower part around all outsides of arc fixed plate 9 is equal Ring spring 10 is provided with, so as to the cavity 901 inserted for subheader be surrounded between all arc fixed plates 9, in arc fixed plate 9 Elastic rubber sleeve 7 is provided between the side wall of insulating sleeve 6, the round boss 802 is stretched into cavity 901, and its end is set There is 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, conducting rod 12 is located at one end and the metal-cored connection of cable 3 in insulation leather sheath 13, and the other end, which has, extend into sky Chamber 901 and the conductive head 1201 contacted with arc-shaped recess 804；

Further, described surround has gap between the arc fixed plate 9 of cavity 901 and round boss 802；The conductive card The connected unit 801 that 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 from bottom Upwardly toward the sidewall slope of insulating sleeve 6；

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

Further, the upper and lower part of the lateral wall of arc fixed plate 9 is respectively arranged with the arc of positioning ring spring 10 Groove 902, the upper and lower part of the madial wall of arc fixed plate 9 is respectively arranged with arc convex 907 and rectangular preiection 905, and arc Depressed part 906 is formed between projection 907 and rectangular preiection 905；The bottom of arc fixed plate 9 is movably arranged on by platform 903 In annular groove 806, and the chuck 904 being engaged with the side wall of round boss 802 is formed between platform 903 and rectangular preiection 905；Arc It is domatic 908 extended out from bottom to top between the top of shape fixed plate 9 and arc convex 907, so that the conductive head 1201 of subheader It can slide on domatic 908 and be snapped onto after overcoming the elastic force of ring spring 10 in arc-shaped recess 804 at this；The subheader is led The spacing neck 1202 of annular, the spacing neck 1202 and the phase of arc convex 907 on arc fixed plate 9 are provided with electric pole 12 Coordinate, conductive head 1201 is locked in cavity 901；

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

Further, it is provided with the female connecting hole of tool on one end in the insertion of the conducting rod 12 insulation leather sheath 13 1203, the connecting hole 1203 is 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 circumferentially positioned at arc respectively The upper and lower part in the outside of shape fixed plate 9；

Finally, the problem of plug-in structurally waterproof in order to solve 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 phase The shielding part 703 of same material, that is to say, that integral shielding part 703 is provided with the top of elastic rubber sleeve 7, in shielding part 703 On open a patchhole 702 passed through for subheader, 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 it by cover plate In, 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, and inside is a conductive core 1205 being connected with conductive head 1201, is led The outer wrap insulator 1204 of battery core 1205, the other end of conductive core 1205 is contacted with metal-cored in cable 3, insulator 1204 On be provided with the spacing neck 1202 of annular, the arc that the spacing neck 1202 and the upper inner wall of arc fixed plate 9 are provided with Projection 907 is engaged；Moreover, be inserted into subheader in cavity 901, when conductive head 1201 is with 804 clamping of arc-shaped recess, insulated hull The end of set 13 can extend into patchhole 702；

After said structure, after the conducting rod 12 of subheader is inserted into by patchhole 702 in cavity 901, due to subheader with Cavity 901 is interference fit, 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 is deformed, and then patchhole 702 is diminished, so as to improve sealing performance.

Claims (9)

1. a kind of 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）Waterproof sealing structure is provided with the cable aperture passed through, cable aperture（4）, the waterproof sealing structure（4）Including being symmetrically stuck in Bucker（2）The sealing ring being made up of silica gel material at upper cable aperture two 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 subway type transformer according to claim 1, it is characterised in that：The two 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 constitute, 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 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 cooperated, 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）It is interior along 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 insert cavity（901）, Arc fixed plate（9）With insulating sleeve（6）Elastic rubber sleeve is provided between the wall of side（7）, the round boss（802）Stretch into cavity （901）It is interior, and its end is provided with the arc-shaped recess for blocking subheader end（804）；The subheader includes an insulation leather sheath（13） With one end insertion insulation leather sheath（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 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 have 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 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 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 the wall of side（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 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 spacing neck（1202）, the spacing neck（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 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 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.