CN114927311B - Totally enclosed three-phase voltage transformer in groups - Google Patents
Totally enclosed three-phase voltage transformer in groups Download PDFInfo
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- CN114927311B CN114927311B CN202210670318.5A CN202210670318A CN114927311B CN 114927311 B CN114927311 B CN 114927311B CN 202210670318 A CN202210670318 A CN 202210670318A CN 114927311 B CN114927311 B CN 114927311B
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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 the required position, the sealing plug of taking off the enclosure top then will once side the 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 back row's line connection can, when carrying out secondary side and using circuit connection, in order to avoid using for a long time and lead to the secondary side to use the electric joint to drop, it is fixed to need to connect the secondary side to use the electric joint through secondary side fixed sealing spare, thereby avoid secondary side to use the electric joint to drop or not hard up when long-time power consumption, lead to the continuous condition of circuit supply time break-make of secondary side.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a fully-enclosed three-phase grouped voltage transformer.
Background
Present three-phase is unitized voltage transformer 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 the convenience of circuit installation for giving first place to and not having much regard to the leakproofness, lead to the life of mutual-inductor lower, when the electrical equipment is connected for a long time to 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
A series of concepts in a simplified form are introduced in the summary section, which is described in further detail in the detailed description section. 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 case; 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 formed in the side wall of the fixed shell, the mounting plate is detachably mounted on the top surface of the shell, and a plurality of fixing blocks are arranged on the side wall of the support frame.
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 and the fixing shell to be connected with a secondary side fixing and sealing element on the three-phase transformer assembly, the secondary side fixing and 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 and sealing element comprises a rotating disc, a connecting ring and a clamp ring; the utility model discloses a secondary side wiring portion, including secondary side wiring portion, rotation dish, limiting part, adjusting screw, go up the screw connection portion, the rotation dish is connected to the axle of rotating the dish, the tip of rotation dish pass through the locating part with last translation nut swing joint of adjusting screw, be provided with the spiral activity groove that the diameter reduces gradually on the rotation dish, be provided with first connecting rod and second connecting rod on the go-between, the one end of first connecting rod with go-between hub connection, the one end of second connecting rod with go-between hub connection, the fixture ring sets up on the secondary side wiring portion, be provided with the third connecting rod on the lateral wall of fixture ring, the third connecting rod is the L type, the one end of third connecting rod with fixture ring hub connection, the other end hub connection of third connecting rod has the dop, the dop can connect with secondary side electrical connector joint, the other end of second connecting rod with third connecting rod hub connection.
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 present 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 present 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 voltage 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 practice 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: a three-phase mutual inductor assembly 1 and a closed shell 2; three-phase mutual-inductor subassembly 1 sets up in the enclosure 2, three-phase mutual-inductor subassembly 1 respectively with top, lateral wall and the bottom electricity of enclosure 2 are connected, the bottom of three-phase mutual-inductor subassembly 1 is provided with secondary side fixed seal spare 3, the top and the lateral wall of enclosure 2 are provided with sealing plug 27, sealing plug 27 will three-phase mutual-inductor subassembly 1 with the top of enclosure 2 and the intercommunication department of lateral wall are 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 by connecting members, which are arranged on the inner wall of the enclosure 2, and are electrically connected with the top, the side wall and the secondary side fixed sealing member 3 of the enclosure 2, respectively. 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 is connected as an organic 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 fixing shell 22 includes 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 walls of the shell 221 and the supporting frame 222 are respectively provided with a plurality of primary side sockets 24, a plurality of secondary side sockets 25 and a plurality of wiring 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. The primary side socket 24 is arranged at the top of the fixed casing 22, the secondary side socket 25 is arranged at the bottom of the fixed casing 22, the wiring port 26 is arranged on the side wall of the fixed casing 22, the mounting plate 223 is detachably mounted on the top surface of the casing 221, and the side wall of the support frame 222 is provided with a plurality of fixing blocks 224. Be provided with strengthening rib 211 on the backplate 21, the lateral wall of backplate 21 is provided with a plurality of flip 212 and card strip 213, card strip 213 follows the border of backplate 21 sets up, 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 includes 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 casing 221 through the matching between the clamping strips 238 and the clamping grooves, the bottom surface of the back plate 21 is abutted to the connecting elastic sheet 236, the side walls of the upper frame 231 and the lower frame 232 are provided with openings corresponding to the primary side socket 24, the secondary side socket 25 and the flip cover 212, and the upper frame 231 and the lower frame 232 are sealed by the sealing plug 27 and the primary side socket 24 and the secondary side socket 25.
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 mutual inductor 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 mutual inductor 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, because the secondary side socket 25 is frequently required to be connected with a secondary side electric connector, the connection mode of the flip cover 212 is adopted, so that the opening and closing of the inside of the shell 2 can be conveniently realized, the primary side socket 24 and the wiring port 26 belong to ports requiring 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 fixed shell 22 and the back plate 21 are assembled, the clamping strips 238 of the upper frame 231 and the lower frame 232 slide into 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 and sealing member 3 on the three-phase transformer assembly 1, the secondary side fixing and sealing member 3 is arranged on a secondary side wiring portion at the bottom of the three-phase transformer assembly 1, the secondary side socket 25 corresponds to the position of the secondary side wiring portion, and the secondary side fixing and sealing member 3 comprises a rotating disc 31, a connecting ring 32 and a clamp ring 33; the secondary side wiring part is connected with the rotating disc 31 in a shaft mode, the end part of the rotating disc 31 is movably connected with a translation nut 281 on the adjusting screw 28 through a limiting part 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 part, a third connecting rod 331 is arranged on the side wall of the fixture ring 33, the third connecting rod 331 is L-shaped, one end of the third connecting rod 331 is connected with the fixture ring 33 in a shaft mode, the other end of the third connecting rod 331 is connected with a clamping head 332 in a shaft mode, the clamping head 332 can be clamped with the secondary side electric connector, and the other end of the second connecting rod 322 is connected with the third connecting rod 331 in a shaft mode. 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 sealing shell 2 after the three-phase mutual inductor component 1 is wrapped and sealed by the sealing shell 2, and the connection elastic sheet 236 is prevented from falling off in a fatigue state when being used for a long time, so that the sealing shell 2 is prevented from self peeling off and separating, thereby prolonging the service life of the sealing 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 sealing 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, when 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 clamp ring 33 as the rotation axis, so as to make the clamp 332 at the other end clamp on the secondary side power consumption contact, so as to realize the fixed connection of the secondary side power consumption contact, when the secondary side power consumption contact needs to be pulled out, the principle is opposite, only the adjusting screw 28 needs to be rotated reversely, while the adjusting screw 28 is rotated and tightened, the closed shell 2 and the three-phase mutual inductor assembly 1 are further tightly connected by the self, so that the secondary side is further prevented from falling off 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, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; 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 connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 described above, it is not intended to be limited to the details shown, described and illustrated herein, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed, and to such extent that such modifications are readily available to those skilled in the art, and it is not intended to be limited to the details shown and described herein without departing from the general concept as defined by the appended claims and their equivalents.
Claims (4)
1. 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 assembly (1) is arranged in the closed shell (2), the three-phase mutual inductor assembly (1) is electrically connected with the top, the side wall and the bottom of the closed shell (2) respectively, a secondary side fixing sealing piece (3) is arranged at the bottom of the three-phase mutual inductor assembly (1), sealing plugs (27) are arranged at the top and the side wall of the closed shell (2), and the sealing plugs (27) seal the communication positions of the three-phase mutual inductor assembly (1) and the top and the side wall of the closed shell (2);
the closed shell (2) comprises a back plate (21), a fixed shell (22) and a sealing frame (23); the three-phase transformer assembly (1) is arranged on the back plate (21), the back plate (21) is arranged on the fixed shell (22), the three-phase transformer assembly (1) is wrapped in the fixed shell (22), and the sealing frame (23) is sleeved at the edge of the fixed shell (22) and wraps the fixed shell (22) and the back plate (21);
the fixed shell (22) comprises a shell (221) and a support frame (222), the shape of the support frame (222) is matched with that of the shell (221), the support frame (222) is arranged on the inner side wall of the shell (221), the bottom of the support frame (222) is connected with the back plate (21), the side wall of the shell (221) and the side wall of the support frame (222) are respectively provided with a plurality of primary side sockets (24), a plurality of secondary side sockets (25) and a plurality of wiring ports (26), the outer side wall of the shell (221) is provided with a clamping groove, and the sealing frame (23) is connected with the shell (221) through the clamping groove;
the primary side socket (24) is arranged at the top of the fixed shell (22), the secondary side socket (25) is arranged at the bottom of the fixed shell (22), the wiring port (26) is arranged on the side wall of the fixed shell (22), the top surface of the shell (221) is detachably provided with a mounting plate (223), and the side wall of the support frame (222) is provided with a plurality of fixing blocks (224);
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 turnover covers (212) and clamping strips (213), the clamping strips (213) are arranged along the edge of the back plate (21), the bottom of the support frame (222) is provided with a clamping groove, the support frame (222) is hermetically connected with the back plate (21) through the matching of the clamping strips (213) and the clamping groove, the positions of the turnover covers (212) and the secondary side jacks (25) are adapted, and the turnover covers (212) can be movably connected with the shell (221);
the sealing frame (23) comprises an upper frame (231) and a lower frame (232), a connecting plate (233) is arranged on the upper frame (231), a sealing plate (234) is arranged on the lower frame (232), a connecting hole (235) and a connecting elastic sheet (236) are arranged on the connecting plate (233), a fixing clamping table (237) is arranged on the sealing plate (234), the fixing clamping table (237) is matched with the connecting elastic sheet (236) in position, clamping strips (238) are arranged on the inner walls of the upper frame (231) and the lower frame (232), 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), openings corresponding to the primary side socket (24), the secondary side socket (25) and the turnover cover (212) are respectively arranged on the side wall of the upper frame (231) and the side wall of the lower frame (232), and the upper frame (231) and the lower frame (232) seal the primary side socket (24) and the secondary side plug socket (27);
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 fixed shell (22) is connected with the secondary side fixed sealing element (3) on the three-phase transformer assembly (1), the secondary side fixed sealing element (3) is arranged on a secondary side wiring part at the bottom of the three-phase transformer assembly (1), the secondary side jack (25) corresponds to the position of the secondary side wiring part, and the secondary side fixed sealing element (3) comprises a rotating disc (31), a connecting ring (32) and a clamp ring (33); the secondary side wiring part is connected with the rotating disc (31) 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 part, a third connecting rod (331) is arranged on the side wall of the fixture ring (33), the third connecting rod (331) is L-shaped, one end of the third connecting rod (331) is connected with the fixture ring (33) in a shaft mode, the other end of the third connecting rod (331) is connected with a clamping head (332) in a shaft mode, the clamping connection with the secondary side connecting rod (331) can be connected with an electric connector, and the other end of the second connecting rod (322) is connected with the second connecting rod (331) in a clamping mode.
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, B, C and 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. The totally enclosed three-phase grouped voltage transformer according to claim 1, 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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