CN114927311A - Totally enclosed three-phase voltage transformer in groups - Google Patents
Totally enclosed three-phase voltage transformer in groups Download PDFInfo
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- CN114927311A CN114927311A CN202210670318.5A CN202210670318A CN114927311A CN 114927311 A CN114927311 A CN 114927311A CN 202210670318 A CN202210670318 A CN 202210670318A CN 114927311 A CN114927311 A CN 114927311A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
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Abstract
The invention discloses a totally enclosed three-phase grouped voltage transformer, which comprises: three-phase mutual-inductor subassembly and enclosure. When using this mutual-inductor, at first with enclosure fixed mounting in required position, the sealing plug of taking off the enclosure top then will once the side power cord penetrate and be connected with three-phase mutual-inductor subassembly from the top of enclosure, the secondary side of three-phase mutual-inductor subassembly is in by the sealed state of enclosure this moment, when needs, open the enclosure bottom the back row's of going on circuit connection can, when carrying out the secondary side and using circuit connection, in order to avoid long-time use to lead to the secondary side to drop with the electrical connector, it is fixed to need to connect the secondary side with the electrical connector through the fixed sealing member of secondary side, thereby avoid when long-time power consumption the secondary side with the electrical connector drop or become flexible, lead to the condition that the secondary side is interrupted with circuit power supply.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a totally enclosed three-phase grouped voltage transformer.
Background
Present three-phase is voltage transformer in groups all is used for outdoor vary voltage operation, so need the mutual-inductor to have better closed effect because of equipment such as needs external ammeter and avoid the rainwater to get into, but current mutual-inductor all with make things convenient for the circuit installation to give first place to and do not attach a lot of leakproofness, lead to the life of mutual-inductor lower, when the electrical equipment is connected for a long time at the secondary side simultaneously, along with rainwater, fog, dust etc. corrode and lead to the secondary side power consumption to connect very easily and drop from the mutual-inductor. Therefore, there is a need for a totally enclosed three-phase group voltage transformer that at least partially solves the problems of the prior art.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above problems, the present invention provides a totally enclosed three-phase grouped voltage transformer, comprising: a three-phase transformer assembly and a containment vessel; the three-phase mutual inductor assembly is arranged in the closed shell, the three-phase mutual inductor assembly is respectively electrically connected with the top, the side wall and the bottom of the closed shell, a secondary side fixing sealing piece is arranged at the bottom of the three-phase mutual inductor assembly, sealing plugs are arranged on the top and the side wall of the closed shell, and the three-phase mutual inductor assembly is sealed with the communication position of the top and the side wall of the closed shell through the sealing plugs.
Preferably, the three-phase mutual inductor assembly comprises an A mutual inductor, a B mutual inductor, a C mutual inductor and an N mutual inductor, and is connected into a whole through connecting pieces, the connecting pieces are arranged on the inner wall of the closed shell, and the connecting pieces are respectively and electrically connected with the top and the side wall of the closed shell and the secondary side fixing sealing piece.
Preferably, rubber pads are arranged between the mutual sensor A, the mutual sensor B, the mutual sensor C and the mutual sensor N.
Preferably, the enclosure comprises a back plate, a fixed shell and a sealing frame; the three-phase mutual inductor subassembly sets up on the backplate, the backplate sets up on the set casing, and will three-phase mutual inductor subassembly parcel is in the set casing, sealed frame cover is established the edge of set casing and will the set casing with including the backplate parcel.
Preferably, the fixed shell includes a casing and a support frame, the support frame is adapted to the casing in shape, the support frame is disposed on the inner side wall of the casing, the bottom of the support frame is connected to the back plate, the side wall of the casing and the side wall of the support frame are respectively provided with a plurality of primary side sockets, a plurality of secondary side sockets and a plurality of wiring ports, the outer side wall of the casing is provided with a clamping groove, and the sealing frame is connected to the casing through the clamping groove.
Preferably, the primary side socket is arranged at the top of the fixed shell, the secondary side socket is arranged at the bottom of the fixed shell, the wiring port is arranged on the side wall of the fixed shell, the mounting plate is detachably mounted on the top surface of the shell, and the side wall of the support frame is provided with a plurality of fixed blocks.
Preferably, be provided with the strengthening rib on the backplate, the lateral wall of backplate is provided with a plurality of flip and card strip, the card strip is followed the border of backplate sets up, the bottom of support frame is provided with the draw-in groove, the support frame pass through the card strip with the cooperation of draw-in groove with backplate sealing connection, flip with the position of secondary side socket suits, and flip can with casing swing joint.
Preferably, the sealing frame includes upper ledge and lower frame, be provided with the connecting plate on the upper ledge, be provided with the closing plate on the lower frame, be provided with connecting hole and connection shell fragment on the connecting plate, be provided with the fixing clip platform on the closing plate, the fixing clip platform with the position of connecting the shell fragment suits, the upper ledge with the inner wall of lower frame all is provided with the joint strip, the upper ledge with the lower frame all passes through the joint strip with cooperation between the joint groove with the casing is connected, the bottom surface of backplate with connect the shell fragment butt, the lateral wall of upper ledge with the lateral wall of lower frame be provided with respectively with once side socket, secondary side socket with the corresponding opening of flip, the upper ledge with all pass through on the lower frame the sealing plug will once side socket with the secondary side socket is sealed.
Preferably, an adjusting screw is arranged on a side wall of the lower frame, the adjusting screw penetrates through the lower frame, the fixing shell is connected with a secondary side fixing sealing element on the three-phase transformer assembly, the secondary side fixing sealing element is arranged on a secondary side wiring part at the bottom of the three-phase transformer assembly, a secondary side socket corresponds to the secondary side wiring part in position, and the secondary side fixing sealing element comprises a rotating disc, a connecting ring and a clamp ring; the rotating disc is connected with the secondary side wiring part through a shaft, the end part of the rotating disc is movably connected with a translation nut on the adjusting screw through a limiting part, the rotating disc is provided with a spiral movable groove with gradually reduced diameter, the connecting ring is provided with a first connecting rod and a second connecting rod, one end of the first connecting rod is movably connected with the movable groove, the other end of the first connecting rod is connected with the connecting ring shaft, one end of the second connecting rod is connected with the connecting ring shaft, the fixture ring is arranged on the secondary side wiring part, a third connecting rod is arranged on the side wall of the fixture ring, the third connecting rod is L-shaped, one end of the third connecting rod is connected with the fixture ring through a shaft, the other end shaft of the third connecting rod is connected with a clamping head, the clamping head can be clamped with the secondary side electric connector, and the other end of the second connecting rod is connected with the third connecting rod shaft.
Preferably, a guide rail is provided on a side wall of the secondary side wiring portion, and the connection ring is slidable along the guide rail.
Compared with the prior art, the invention at least comprises the following beneficial effects:
when using this mutual-inductor, at first with enclosure fixed mounting in required position, the sealing plug of taking off the enclosure top then will once the side power cord penetrate and be connected with three-phase mutual-inductor subassembly from the top of enclosure, the secondary side of three-phase mutual-inductor subassembly is in by the sealed state of enclosure this moment, when needs, open the enclosure bottom the back row's of going on circuit connection can, when carrying out the secondary side and using circuit connection, in order to avoid long-time use to lead to the secondary side to drop with the electrical connector, it is fixed to need to connect the secondary side with the electrical connector through the fixed sealing member of secondary side, thereby avoid when long-time power consumption the secondary side with the electrical connector drop or become flexible, lead to the condition that the secondary side is interrupted with circuit power supply.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a totally enclosed three-phase grouped voltage transformer according to the present invention.
Fig. 2 is an exploded view of the totally enclosed three-phase group potential transformer according to the present invention.
Fig. 3 is a partial cross-sectional view of a front view of a totally enclosed three-phase ganged voltage transformer according to the present invention.
Fig. 4 is a schematic structural diagram of a sealing frame in the totally enclosed three-phase grouped voltage transformer according to the present invention.
Fig. 5 is a cross-sectional view of a back plate of the totally enclosed three-phase group voltage transformer according to the present invention.
Fig. 6 is an exploded view of a stationary case of the totally enclosed three-phase group potential transformer according to the present invention.
Fig. 7 is a schematic diagram of a secondary side fixed sealing member and a secondary side of the totally enclosed three-phase grouped voltage transformer according to the present invention, which are connected by an electrical connector.
Fig. 8 is a schematic view from another side of fig. 7.
Fig. 9 is a schematic structural diagram of a secondary side fixing sealing member in the totally enclosed three-phase grouped voltage transformer according to the present invention.
In the figure: 1 three-phase mutual inductor component, 2 closed shell, 21 back plate, 211 reinforcing rib, 212 flip cover, 213 clamping strip, 22 fixed shell, 221 shell, 222 support frame, 223 mounting plate, 224 fixed block, 23 sealing frame, 231 upper frame, 232 lower frame, 233 connecting plate, 234 sealing plate, 235 connecting hole, 236 connecting elastic sheet, 237 fixed clamping table, 238 clamping strip, 24 primary side socket, 25 secondary side socket, 26 wiring port, 27 sealing plug, 28 adjusting screw, 281 translation nut, 3 secondary side fixed sealing element, 31 rotating disc, 311 limiting element, 32 connecting ring, 321 first connecting rod, 322 second connecting rod, 33 clamping ring, 331 third connecting rod, 332 clamping head.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 9, the present invention provides a totally enclosed three-phase grouped voltage transformer, comprising: the three-phase mutual inductor comprises a three-phase mutual inductor component 1 and a closed shell 2; the three-phase mutual inductor subassembly 1 sets up in the closed shell 2, the three-phase mutual inductor subassembly 1 respectively with the top, the lateral wall and the bottom electricity of closed shell 2 are connected, the bottom of three-phase mutual inductor subassembly 1 is provided with secondary side fixed seal 3, the top and the lateral wall of closed shell 2 are provided with sealing plug 27, sealing plug 27 will the three-phase mutual inductor subassembly 1 with the intercommunication department of the top and the lateral wall of closed shell 2 is sealed.
The working principle and the beneficial effects of the technical scheme are as follows: through the design of above-mentioned structure, when using this mutual-inductor, at first with the enclosure 2 fixed mounting in required position, take off the sealing plug 27 at enclosure 2 top and then penetrate and be connected with three-phase mutual-inductor subassembly 1 with the power cord of once side from the top of enclosure 2, the secondary side of three-phase mutual-inductor subassembly 1 is in the state sealed by enclosure 2 this moment, when needs, open 2 bottoms of enclosure the back row line connection can, when carrying out the secondary side with circuit connection, in order to avoid long-time use to lead to the secondary side with the electric joint to drop, need connect fixedly to the secondary side with the electric joint through secondary side fixed seal spare 3, thereby avoid the secondary side with the electric joint to drop or become flexible when long-time using electricity, lead to the continuous condition when the secondary side with the circuit power supply.
In one embodiment, the three-phase mutual inductor assembly 1 comprises an a mutual inductor, a B mutual inductor, a C mutual inductor and an N mutual inductor, and is integrally connected through connecting pieces, which are arranged on the inner wall of the enclosure 2 and are respectively electrically connected with the top, the side wall and the secondary side fixed sealing member 3 of the enclosure 2. Rubber pads are arranged between the mutual sensor A, the mutual sensor B, the mutual sensor C and the mutual sensor N.
The working principle and the beneficial effects of the technical scheme are as follows: through the design of above-mentioned structure, three-phase mutual-inductor subassembly 1 connects as whole through the connecting piece, convenient and the equipment connection of enclosure 2, and the user can select corresponding connection port to connect as required.
In one embodiment, the enclosure 2 includes a back plate 21, a stationary case 22, and a sealing frame 23; three-phase mutual-inductor subassembly 1 sets up on the backplate 21, backplate 21 sets up on the set casing 22, and will three-phase mutual-inductor subassembly 1 parcel is in the set casing 22, sealed frame 23 cover is established the edge of set casing 22 will set casing 22 with including the backplate 21 parcel. The fixed shell 22 includes a shell 221 and a support frame 222, the support frame 222 is adapted to the shell 221 in shape, the support frame 222 is disposed on an inner side wall of the shell 221, the bottom of the support frame 222 is connected to the back plate 21, a plurality of primary side sockets 24, a plurality of secondary side sockets 25, and a plurality of wiring ports 26 are disposed on a side wall of the shell 221 and a side wall of the support frame 222, a clamping groove is disposed on an outer side wall of the shell 221, and the sealing frame 23 is connected to the shell 221 through the clamping groove. The primary side socket 24 is disposed on the top of the fixed casing 22, the secondary side socket 25 is disposed on the bottom of the fixed casing 22, the wiring port 26 is disposed on the side wall of the fixed casing 22, the top surface of the casing 221 is detachably mounted with a mounting plate 223, and the side wall of the support 222 is provided with a plurality of fixed blocks 224. Be provided with strengthening rib 211 on backplate 21, the lateral wall of backplate 21 is provided with a plurality of flip 212 and card strip 213, card strip 213 is followed the border setting of backplate 21, the bottom of support frame 222 is provided with the draw-in groove, support frame 222 passes through card strip 213 with the cooperation of draw-in groove with backplate 21 sealing connection, flip 212 with the position of secondary side socket 25 suits, and flip 212 can with casing 221 swing joint. The sealing frame 23 comprises an upper frame 231 and a lower frame 232, the upper frame 231 is provided with a connecting plate 233, the lower frame 232 is provided with a sealing plate 234, the connecting plate 233 is provided with a connecting hole 235 and a connecting spring plate 236, the sealing plate 234 is provided with a fixing clip 237, the fixing clip 237 is adapted to the position of the connecting spring 236, the inner walls of the upper frame 231 and the lower frame 232 are both provided with a clamping strip 238, the upper frame 231 and the lower frame 232 are both connected with the shell 221 through the matching between the clamping strip 238 and the clamping groove, the bottom surface of the back plate 21 abuts against the connecting elastic sheet 236, the side walls of the upper frame 231 and the lower frame 232 are respectively provided with openings corresponding to the primary side socket 24, the secondary side socket 25 and the flip cover 212, the primary side socket 24 and the secondary side socket 25 are sealed by the sealing plug 27 on the upper frame 231 and the lower frame 232.
The working principle and the beneficial effects of the technical scheme are as follows: through the design of the structure, when assembling, firstly, the mounting plate 223 is mounted on the top surface of the shell 221 to realize the front wrapping sealing of the three-phase transformer assembly 1, then the support frame 222 is mounted in the shell 221, and the three-phase transformer assembly 1 is mounted in the support frame 222, the three-phase transformer assembly 1 can be extruded and fixed through the internal fixing block 224, meanwhile, a buffer space is reserved between the three-phase transformer assembly 1 and the shell 221, when the transformer falls accidentally, the fixing block 224 and the space reserved between the shell 221 and the support frame 222 can reduce the impact force of the ground on the three-phase transformer assembly 1, thereby prolonging the service life of the three-phase transformer assembly 1, finally, the back plate 21 is mounted on the fixed shell 22, and the clamping strip 213 is clamped with the clamping groove on the side wall of the support frame 222 to realize the sealing between the back plate 21 and the fixed shell 22, in order to avoid that the back plate 21 is crushed by the three-phase transformer assembly 1 due to long-time vertical stress, a reinforcing rib 211 is additionally arranged in the back plate 21 to support the three-phase transformer assembly 1, a flip cover 212 is arranged on the side wall of the bottom of the back plate 21, the flip cover 212 can be connected with the shell 221 in an opening and closing manner, so that the secondary side socket 25 is sealed, and because the secondary side socket 25 frequently needs to be connected with a secondary side electric connector, the connection manner of the flip cover 212 is adopted, so that the opening and closing and the sealing in the shell 2 can be facilitated, the primary side socket 24 and the wiring port 26 belong to ports needing long-term connection lines and do not need to frequently enter and exit the lines, so that the sealing plug 27 is adopted for sealing, after the fixing shell 22 and the back plate 21 are assembled, the clamping strips 238 of the upper frame 231 and the lower frame 232 slide in along the clamping grooves on the outer side wall of the shell 221 to realize the connection with the shell 221, connecting shell fragment 236 on connecting plate 233 when connecting slides along the back of backplate 21 until with fixed calorie platform 237 joint, backplate 21 can support connecting shell fragment 236 and prevent its and fixed calorie platform 237 separation this moment, thereby increase the steadiness and the leakproofness of enclosure 2 body coupling, connecting plate 233 and closing plate 234 can effectively separate backplate 21 and mounted position simultaneously, rainwater causes the damage of three-phase mutual-inductor subassembly 1 in getting into enclosure 2 from backplate 21 when avoiding raining, connecting hole 235 on connecting plate 233 can be used for being connected fixedly with the wall body simultaneously, provide support for the installation of this mutual-inductor on the wall body.
In one embodiment, the side wall of the lower frame 232 is provided with an adjusting screw 28, the adjusting screw 28 penetrates through the lower frame 232, the fixing shell 22 is connected with the secondary side fixing sealing part 3 on the three-phase transformer assembly 1, the secondary side fixing sealing part 3 is arranged on a secondary side wiring part at the bottom of the three-phase transformer assembly 1, the secondary side socket 25 corresponds to the position of the secondary side wiring part, and the secondary side fixing sealing part 3 comprises a rotating disc 31, a connecting ring 32 and a clamp ring 33; the rotating disc 31 is connected to the secondary side wiring portion in a shaft manner, the end portion of the rotating disc 31 is movably connected to a translation nut 281 on the adjusting screw 28 through a limiting member 311, a spiral movable groove with a gradually decreasing diameter is formed in the rotating disc 31, a first connecting rod 321 and a second connecting rod 322 are arranged on the connecting ring 32, one end of the first connecting rod 321 is movably connected to the movable groove, the other end of the first connecting rod 321 is connected to the connecting ring 32 in a shaft manner, one end of the second connecting rod 322 is connected to the connecting ring 32 in a shaft manner, the clamp ring 33 is arranged on the secondary side wiring portion, a third connecting rod 331 is arranged on the side wall of the clamp ring 33, the third connecting rod 331 is L-shaped, one end of the third connecting rod 331 is connected to the clamp ring 33 in a shaft manner, the other end of the third connecting rod 331 is connected to a clamp head 332 in a shaft manner, and the clamp head 332 can be connected to a secondary side electric connector in a clamping manner, the other end of the second link 322 is connected to the third link 331. A guide rail is arranged on the side wall of the secondary side wiring part, and the connecting ring 32 can slide along the guide rail.
The working principle and the beneficial effects of the technical scheme are as follows: through the design of the structure, the adjusting screw 28 can further enhance the firmness of connection between the three-phase mutual inductor component 1 and the closed shell 2 after the closed shell 2 wraps and seals the three-phase mutual inductor component 1, and avoids that the connecting elastic sheet 236 falls off in a fatigue state when being used for a long time, so that the closed shell 2 is peeled off and separated, thereby prolonging the service life of the closed shell 2, meanwhile, when the secondary side electric connector is connected, the handle arranged on the adjusting screw 28 is rotated to control the secondary side fixed sealing part 3 so as to realize the fixed connection of the secondary side electric connector and the secondary side wiring part and prevent the secondary side electric connector from falling off, when the secondary side electric connector is required to be connected, the flip cover 212 is firstly opened, the secondary side electric connector is inserted into the closed shell 2 from the secondary side socket 25 to be connected with the secondary side wiring part of the three-phase mutual inductor component 1, then, the adjusting screw 28 is rotated, the translation nut 281 thereon will translate, at this time, the limiting member 311 connected thereto will be driven, so as to rotate the rotating disc 31, while the rotating disc 31 rotates, the connection end of the first connecting rod 321 and the rotating disc 31 will move towards the rotation axis of the rotating disc 31 along the spiral movable groove, while the other end of the first connecting rod 321 will drive the connection ring 32 to slide and translate along the guide rail, so as to make the second connecting rod 322 drive the third connecting rod 331 to rotate, the third connecting rod 331 will rotate with the connection end of the third connecting rod and the fixture ring 33 as the rotation axis, so as to make the fixture 332 at the other end clamp on the secondary side power consumption connector, so as to realize the fixed connection of the secondary side power consumption connector, when the secondary side power consumption connector needs to be pulled out, the principle is opposite, only the adjusting screw 28 needs to be rotated and tightened, and when the adjusting screw 28 is rotated, it will also tightly connect the sealing shell 2 and the three-phase transformer assembly 1, thereby further avoiding the falling of the secondary side connection by the electric connector.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A totally enclosed three-phase grouped voltage transformer, comprising: the three-phase transformer assembly comprises a three-phase transformer assembly (1) and a closed shell (2); three-phase mutual-inductor subassembly (1) sets up in closed shell (2), three-phase mutual-inductor subassembly (1) respectively with top, lateral wall and the bottom electricity of closed shell (2) are connected, the bottom of three-phase mutual-inductor subassembly (1) is provided with secondary side fixed sealing spare (3), the top and the lateral wall of closed shell (2) are provided with sealing plug (27), sealing plug (27) will three-phase mutual-inductor subassembly (1) with the top of closed shell (2) and the intercommunication department of lateral wall are sealed.
2. The totally enclosed three-phase group voltage transformer according to claim 1, characterized in that the three-phase transformer assembly (1) comprises mutual a, mutual B, mutual C and mutual N sensors, and is connected as a whole by connecting pieces provided on the inner wall of the enclosure (2), said connecting pieces being electrically connected respectively to the top, side walls and secondary side stationary seal (3) of the enclosure (2).
3. The totally enclosed three-phase grouped voltage transformer according to claim 2, characterized in that rubber gaskets are arranged between each two of said mutual a, B, C and N sensors.
4. A totally enclosed three-phase group voltage transformer according to claim 1, characterized in that said enclosure (2) comprises a back plate (21), a fixed shell (22) and a sealing frame (23); three-phase mutual-inductor subassembly (1) sets up on backplate (21), backplate (21) set up on set casing (22), and will three-phase mutual-inductor subassembly (1) parcel is in set casing (22), sealed frame (23) cover is established the edge of set casing (22) and will set casing (22) with including backplate (21) parcel.
5. The totally enclosed three-phase grouped voltage transformer according to claim 4, wherein the fixed shell (22) comprises a shell (221) and a supporting frame (222), the shape of the supporting frame (222) is adapted to the shape of the shell (221), the supporting frame (222) is disposed on the inner side wall of the shell (221), the bottom of the supporting frame (222) is connected to the back plate (21), the side wall of the shell (221) and the side wall of the supporting frame (222) are each provided with a plurality of primary side sockets (24), a plurality of secondary side sockets (25) and a plurality of wire connection ports (26), the outer side wall of the shell (221) is provided with a clamping groove, and the sealing frame (23) is connected to the shell (221) through the clamping groove.
6. The totally enclosed three-phase grouped voltage transformer according to claim 5, wherein the primary side socket (24) is disposed on the top of the fixed shell (22), the secondary side socket (25) is disposed on the bottom of the fixed shell (22), the wiring port (26) is disposed on the side wall of the fixed shell (22), the top surface of the shell (221) is detachably mounted with a mounting plate (223), and the side wall of the supporting frame (222) is provided with a plurality of fixed blocks (224).
7. The totally enclosed three-phase grouped voltage transformer according to claim 6, wherein the back plate (21) is provided with a reinforcing rib (211), the side wall of the back plate (21) is provided with a plurality of flip covers (212) and a plurality of clamping strips (213), the clamping strips (213) are arranged along the edge of the back plate (21), the bottom of the supporting frame (222) is provided with a clamping groove, the supporting frame (222) is hermetically connected with the back plate (21) through the matching of the clamping strips (213) and the clamping groove, the flip covers (212) are adapted to the positions of the secondary side jacks (25), and the flip covers (212) can be movably connected with the shell (221).
8. The totally enclosed three-phase grouped voltage transformer according to claim 7, wherein the sealing frame (23) comprises an upper frame (231) and a lower frame (232), the upper frame (231) is provided with a connecting plate (233), the lower frame (232) is provided with a sealing plate (234), the connecting plate (233) is provided with a connecting hole (235) and a connecting elastic sheet (236), the sealing plate (234) is provided with a fixing clamping table (237), the fixing clamping table (237) is adapted to the position of the connecting elastic sheet (236), the inner walls of the upper frame (231) and the lower frame (232) are provided with clamping strips (238), the upper frame (231) and the lower frame (232) are connected with the shell (221) through the matching between the clamping strips (238) and the clamping grooves, the bottom surface of the back plate (21) is abutted against the connecting elastic sheet (236), the side wall of the upper frame (231) and the side wall of the lower frame (232) are respectively provided with openings corresponding to the primary side socket (24), the secondary side socket (25) and the turnover cover (212), and the primary side socket (24) and the secondary side socket (25) are sealed on the upper frame (231) and the lower frame (232) through the sealing plug (27).
9. The totally enclosed three-phase grouped voltage transformer according to claim 8, wherein the side wall of the lower frame (232) is provided with an adjusting screw (28), the adjusting screw (28) penetrates through the lower frame (232) and the fixed shell (22) to be connected with the secondary side fixed sealing part (3) on the three-phase transformer assembly (1), the secondary side fixed sealing part (3) is arranged on the secondary side wiring part at the bottom of the three-phase transformer assembly (1), the secondary side socket (25) corresponds to the position of the secondary side wiring part, and the secondary side fixed sealing part (3) comprises a rotating disc (31), a connecting ring (32) and a clamp ring (33); the rotating disc (31) is connected to the secondary side wiring portion in a shaft mode, the end portion of the rotating disc (31) is movably connected with a translation nut (281) on the adjusting screw (28) through a limiting piece (311), a spiral movable groove with the diameter gradually reduced is formed in the rotating disc (31), a first connecting rod (321) and a second connecting rod (322) are arranged on the connecting ring (32), one end of the first connecting rod (321) is movably connected with the movable groove, the other end of the first connecting rod (321) is connected with the connecting ring (32) in a shaft mode, one end of the second connecting rod (322) is connected with the connecting ring (32) in a shaft mode, the fixture ring (33) is arranged on the secondary side wiring portion, a third connecting rod (331) is arranged on the side wall of the fixture ring (33), the third connecting rod (331) is in an L shape, and one end of the third connecting rod (331) is connected with the fixture ring (33) in a shaft mode, the other end shaft of third connecting rod (331) is connected with dop (332), dop (332) can with secondary side electric joint, the other end of second connecting rod (322) with third connecting rod (331) hub connection.
10. The totally enclosed three-phase grouped voltage transformer according to claim 9, wherein a guide rail is provided on a side wall of the secondary side wiring portion, the connection ring (32) being slidable along the guide rail.
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| CN202210670318.5A CN114927311B (en) | 2022-06-14 | 2022-06-14 | Totally enclosed three-phase voltage transformer in groups |
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| CN202210670318.5A CN114927311B (en) | 2022-06-14 | 2022-06-14 | Totally enclosed three-phase voltage transformer in groups |
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| CN114927311B CN114927311B (en) | 2023-02-03 |
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| CN114927311B (en) | 2023-02-03 |
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