CN215868948U - Built-in three-phase vertical current-limiting reactor - Google Patents
Built-in three-phase vertical current-limiting reactor Download PDFInfo
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- CN215868948U CN215868948U CN202121467607.2U CN202121467607U CN215868948U CN 215868948 U CN215868948 U CN 215868948U CN 202121467607 U CN202121467607 U CN 202121467607U CN 215868948 U CN215868948 U CN 215868948U
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Abstract
The utility model provides a built-in three-phase vertical current-limiting reactor, which comprises 3 sets of coil assemblies, matched lead wires, a magnetic shielding piece for installing the 3 sets of coil assemblies, a magnetic shielding clamping assembly for clamping the magnetic shielding piece into a whole, a clamping assembly for clamping the magnetic shielding piece and the coil assemblies, and an installation fixing assembly fixedly connected with the clamping assembly, wherein the coil assemblies are arranged in the coil assemblies; magnetic shield is rectangular shape and long limit for the structure of setting up from top to bottom, and the magnetic shield is divided to be equipped with 3 coil pack mounting holes from top to bottom, and 3 sets of coil pack respectively fix in 3 coil pack mounting holes of magnetic shield and establish 1 cover, install in the transformer through installation fixed subassembly and transformer fixed connection vertical type during the installation, and the coil passes through the lead wire and concatenates between transformer coil and transformer bushing. Through the integral structure design, the utility model can effectively solve the technical problems of long transformer length and high cost caused by large floor area at the bottom of the horizontal built-in current-limiting reactor in the prior art.
Description
Technical Field
The utility model relates to the technical field of built-in reactors of oil immersed transformers, in particular to a built-in three-phase vertical current limiting reactor.
Background
The oil-immersed transformer is an important component in a power transmission system, and when a short-circuit fault occurs in a power transmission line, the impact of short-circuit current on the transformer can be caused; in order to improve the short-circuit current surge resistance of the transformer, a high-impedance transformer is generally required to be configured in the power grid. The existing method for realizing high impedance of the transformer mainly comprises two methods, namely adjusting the coil arrangement structure of the transformer and arranging a current-limiting reactor inside, wherein the adjustment of the coil arrangement structure to realize high impedance can cause the design and manufacture of the transformer to be complicated, and the production cost of the transformer is increased; the built-in current-limiting reactor improves impedance, so that the transformer adopts a conventional coil arrangement structure, and the design of the transformer is relatively simple. At present, all common built-in three-phase current-limiting reactors are horizontal current-limiting reactors horizontally arranged in an oil immersed transformer, and the horizontal current-limiting reactors are three-phase windings of which are arranged on the same horizontal plane. Although the existing horizontal built-in three-phase current-limiting reactor has simple structure and convenient design, the existing horizontal built-in three-phase current-limiting reactor has the defects of large bottom area of the reactor and large occupied area when being installed in a transformer, thereby causing the length of the transformer to be long, the cost to be high and the occupied area to be large. Therefore, the improvement of the existing horizontal built-in three-phase current-limiting reactor, and the research and development of the built-in three-phase current-limiting reactor with the smallest floor space when the built-in three-phase current-limiting reactor is installed in a transformer are technical problems to be solved urgently in the industry.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is: in order to solve the technical problems existing in a horizontal built-in three-phase current-limiting reactor in the prior art, the built-in three-phase vertical current-limiting reactor is provided, and the floor area of the bottom of the built-in three-phase vertical current-limiting reactor is greatly reduced when the built-in three-phase current-limiting reactor is installed in a transformer.
The technical scheme of the utility model is as follows: the utility model relates to a built-in three-phase vertical current-limiting reactor, which comprises 3 sets of coil components and matched lead wires, wherein each coil component comprises a coil, and the coils are connected in series between a transformer coil and a transformer sleeve through the lead wires; the structure is characterized in that: the magnetic shielding device also comprises a magnetic shielding piece used for installing the 3 sets of coil assemblies, a magnetic shielding clamping assembly used for clamping the magnetic shielding piece into a whole, a clamping assembly used for clamping the magnetic shielding piece and the coil assemblies, and an installation and fixation assembly which is fixedly connected with the clamping assembly and is used for being connected with a transformer during installation; above-mentioned magnetic shield is rectangular shape and long limit for the structure of vertical setting, and the magnetic shield is divided to be equipped with 3 coil pack mounting holes from top to bottom, and above-mentioned 3 sets of coil pack respectively fix in 3 coil pack mounting holes of magnetic shield and set up 1 set.
The further scheme is as follows: the magnetic shielding piece is a structural piece formed by laminating silicon steel sheets, and a plurality of bolt holes for connection and fixation are arranged on the periphery of the magnetic shielding piece and 2 middle cross beams.
The further scheme is as follows: the magnetic shielding clamping assembly comprises an upper clamping piece, a middle clamping piece, a lower clamping piece, a left clamping piece, a right clamping piece and clamping bolts, wherein bolt holes corresponding to the bolt holes of the magnetic shielding pieces are respectively formed in the clamping pieces; the upper clamping piece and the lower clamping piece are respectively transversely provided with 1 piece at the front side and the rear side of the upper end and the lower end of the magnetic shielding piece, and are fixedly connected with the magnetic shielding piece through clamping bolts; the middle clamping piece is transversely provided with 1 piece respectively at the front side and the rear side of 2 middle cross beams of the magnetic shield and is fixedly connected with the magnetic shield through a clamping bolt; left side folder and right folder respectively in the magnetic shield about both ends both sides respectively vertically set up 1 to through clamping bolt and magnetic shield fastening connection, thereby become the magnetic shield frame that an integration is vertical three frame construction with above-mentioned magnetic shield clamping assembly clamp.
The further scheme is as follows: the upper clamping piece, the middle clamping piece, the lower clamping piece, the left clamping piece and the right clamping piece of the magnetic shielding clamping assembly are structural members formed by processing angle steel.
The further scheme is as follows: the clamping assembly comprises a pressing cushion block, an upper supporting beam, a lower supporting beam and a pull rod; the upper support beam is provided with a plurality of positioning pins and 2 pull rod through holes, and the lower support beam is provided with 2 pull rod through holes and 2 pin holes; the upper supporting beam and the lower supporting beam are respectively provided with 2 rods with the same structure, the pull rod is a rod body piece with bolts in opposite pulling type, and the number of the pull rods is 4; the 3 sets of coil assemblies are respectively compressed by compression cushion blocks in 3 coil assembly mounting holes of the magnetic shielding component, and each compression cushion block is fixedly connected with a close clamping piece in the magnetic shielding clamping component through a bolt; 2 last supporting beams and 2 lower support beams are located the upper and lower both ends of magnetism shielding part about dividing, are located respectively through 2 pull rods between the last supporting beam and the lower support beam of left and right sides and are connected the fastening.
The further scheme is as follows: the mounting and fixing assembly comprises a left mounting rack, a right mounting rack, 2 waist beams, 2 top limiting pieces and 4 bottom positioning pins; the middle part of the waist beam is provided with a mounting connecting lug; 2 waist beams are respectively provided with 1 on the left side and the right side of the middle part of the magnetic shielding piece and are fixedly connected with a middle clamping piece bolt of the magnetic shielding clamping assembly, 4 bottom positioning pins are fixedly arranged on the inner wall of the lower end of the transformer box body, and 2 pin holes of 2 lower supporting beams are respectively in pin joint with 2 positioning pins; one end of each of the left mounting frame and the right mounting frame is fixedly connected with the mounting lug bolts of the 1 waist beam, and the other end of each of the left mounting frame and the right mounting frame is fixedly connected with the side wall of the transformer box body; the lower ends of the 2 top limit pieces are correspondingly connected with the positioning pins of the 2 upper supporting beams in a pin joint mode; the upper end of 2 top locating parts is fixedly connected with the upper end of the transformer box body through bolts.
The further scheme is as follows: the coil is formed by connecting an upper continuous coil and a lower continuous coil which are symmetrically arranged in parallel; the coil has end taps and a middle tap; end taps and middle taps of the coils of the 3 coil assemblies are respectively and correspondingly electrically connected with the corresponding sleeve of the transformer and the coil of the transformer through leads; or, the end taps and the middle taps of the coils of the 3 coil assemblies are respectively and correspondingly and electrically connected with the transformer coil and the sleeve corresponding to the transformer through the lead wires.
The further scheme is as follows: in the 3-coil assembly, the coil winding direction of the coil assembly disposed in the coil assembly mounting hole with the magnetic shield in the middle is opposite to the coil winding direction of the other 2-coil assembly.
The further scheme is as follows: the coil assembly further comprises an inner insulating cylinder, an inner stay, an outer insulating cylinder, a cushion block, an oil baffle plate and a pressure ring; the inner supporting strips are longitudinally and fixedly arranged on the outer peripheral surface of the inner insulating cylinder at intervals, the coil is wound on the inner supporting strips, the outer supporting strips are longitudinally and fixedly arranged on the inner wall of the outer insulating cylinder at intervals, and the inner end surfaces of the outer supporting strips are abutted against the coil, so that a coil assembly is formed by the inner insulating cylinder, the inner supporting strips, the coil, the outer supporting strips and the outer insulating cylinder together, the upper end and the lower end of the coil assembly are respectively and fixedly provided with one cushion block, the oil baffle plates are respectively and fixedly provided with 1 cushion block at the upper side and the lower side, and the compression rings are respectively and fixedly provided with 1 upper end of the oil baffle plate at the upper side and lower end of the cushion block at the lower side.
The utility model has the positive effects that: (1) according to the built-in three-phase vertical current-limiting reactor, the magnetic shielding piece clamped by the magnetic shielding clamping assembly is designed into a magnetic shielding frame which is integrally in a vertical three-frame structure and is vertically arranged, and 3 sets of coil assemblies are divided into 3 coil assembly mounting holes which are fixedly arranged in the middle of the magnetic shielding piece from top to bottom, so that compared with a built-in three-phase current-limiting reactor which is horizontally arranged and is generally adopted in the prior art, the bottom occupied area of 2/3 can be reduced, and the technical problems that the length of a transformer is long and the cost is high due to the fact that the bottom occupied area of the existing built-in three-phase current-limiting reactor is large are effectively solved. (2) According to the built-in three-phase vertical current-limiting reactor, the magnetic shielding piece adopts a vertical three-frame structure, so that the electric energy loss of the reactor in use can be effectively reduced; in addition, the temperature rise of the reactor in the use process can be effectively reduced through the overall structural design of the coil assembly, the winding direction of the coil assembly in the coil assembly mounting hole in the middle of the magnetic shielding piece is opposite to that of the other 2 sets of coil assemblies, a reasonable magnetic flux loop can be formed when the magnetic shielding piece is used, and magnetic flux leakage and interphase mechanical force are reduced. (3) According to the built-in three-phase vertical current-limiting reactor, the magnetic shielding clamping assembly, the clamping assembly and the structural design of the mounting and fixing assembly are designed and matched, so that the built-in three-phase vertical current-limiting reactor can be firmly mounted in a transformer oil tank, has reliable vibration resistance, transportation impact resistance and low noise performance, and effectively solves the problem of mounting and fixing the built-in three-phase current-limiting reactor in a vertical structure in a transformer.
Drawings
FIG. 1 is a schematic structural view of the present invention, which also schematically shows the installation and connection relationship with a transformer in a transformer tank when in use;
FIG. 2 is a right side view of FIG. 1 with the right mounting bracket omitted;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a schematic structural view of the magnetic shield of the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a schematic structural diagram of a coil assembly of the present invention;
fig. 7 is a top view of fig. 6.
The reference numbers in the above figures are as follows:
magnetic shield 1, coil assembly mounting hole 11, bolt hole 12;
the magnetic shield clamping assembly 2, an upper clamping piece 21, a middle clamping piece 22, a lower clamping piece 23, a left clamping piece 24, a right clamping piece 25 and a clamping bolt 26;
the coil assembly 3, the coil 31, the inner insulating cylinder 32, the inner stay 33, the outer stay 34, the outer insulating cylinder 35, the cushion block 36, the oil baffle plate 37 and the press ring 38;
lead 4, end lead 41, middle lead 42;
the device comprises a clamping assembly 5, a pressing cushion block 51, an upper supporting beam 52, a positioning pin 52-1, a lifting lug 52-2, a lower supporting beam 53 and a pull rod 54;
the mounting and fixing component 6, the waist rail 61 and the mounting and connecting lug 61-1; a left mounting bracket 62, a right mounting bracket 63, a top limiting member 64, and a bottom positioning pin 65;
a fuel tank 100.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
(example 1)
In the present embodiment, in the description of the orientation, the direction toward which fig. 1 faces is taken as the front in the description, the direction away from the direction toward which fig. 1 faces is taken as the rear in the description, and the up-down and left-right directions in fig. 1 are still the up-down and left-right directions in the description.
Referring to fig. 1 to 3, the built-in three-phase vertical current limiting reactor of the present embodiment is mainly composed of a magnetic shield 1, a magnetic shield clamping assembly 2, a coil assembly 3, a lead 4, a clamping assembly 5 and a mounting and fixing assembly 6.
Referring to fig. 4 and 5, magnetic shield 1 is the whole cuboid that is formed by silicon steel sheet pile-up and length direction is the decurrent structure, and magnetic shield 1 divides the middle and down to be equipped with 3 trend and be square coil assembly mounting hole 11 around, still is equipped with a plurality of on magnetic shield 1's the periphery and 2 middle cross beams (middle cross beam indicates the position between 2 adjacent coil assembly mounting hole 11) and connects bolt hole 12 of fixed usefulness.
The magnetic shield holding member 2 is used to clamp the magnetic shield 1 as a whole. The magnetic shield clip assembly 2 includes an upper clip member 21, a middle clip member 22, a lower clip member 23, a left clip member 24, a right clip member 25, and a clamping bolt 26. Bolt holes corresponding to the bolt holes 12 of the magnetic shield 1 are provided in each clip. The upper clamp piece 21 and the lower clamp piece 23 are respectively transversely provided with 1 piece at the front side and the rear side of the upper end and the lower end of the magnetic shield 1, and are fixedly connected with the magnetic shield 1 through clamping bolts 26 to clamp the upper end and the lower end of the magnetic shield 1; the middle clamping piece 22 is transversely provided with 1 piece respectively at the front side and the rear side of 2 transverse parts formed between 3 coil component mounting holes 11 of the magnetic shield 1, and is fixedly connected with the magnetic shield 1 through a clamping bolt 26 to clamp the middle part of the magnetic shield 1; the left and right clamp members 24 and 25 are longitudinally provided 1 at each of the front and rear sides of the left and right ends of the magnetic shield 1, respectively, and are fastened to the magnetic shield 1 by clamp bolts 26 to clamp the left and right ends of the magnetic shield 1. Thereby the magnetic shield 1 is clamped by the magnetic shield holding member 2 into a magnetic shield frame having an upright three-frame structure as a whole. In this embodiment, the material of each clip is preferably angle steel.
Referring to fig. 6 and 7, the coil assembly 3 includes a coil 31, an inner insulation cylinder 32, an inner stay 33, an outer stay 34, an outer insulation cylinder 35, a spacer 36, an oil baffle 37, and a pressure ring 38.
The inner insulating cylinder 32 and the outer insulating cylinder 35 are both hollow cylindrical structural members; the inner supporting strips 33 and the outer supporting strips 34 are respectively provided with a plurality of supporting strips; the inner stay 33 is longitudinally and fixedly arranged on the outer peripheral surface of the inner insulating cylinder 32 at intervals, the coil 31 is wound on the inner stay 33, and the coil 31 is formed by connecting an upper continuous coil and a lower continuous coil which are symmetrically arranged in parallel; the coil 31 has end taps and a middle tap; the outer stays 34 are fixed to the inner wall of the outer insulating cylinder 35 at intervals in the longitudinal direction, and the inner end surface of each outer stay 34 abuts against the coil 31, so that the inner insulating cylinder 32, the inner stay 33, the coil 31, the outer stays 34, and the outer insulating cylinder 35 together form a coil assembly. The cushion blocks 36 are respectively fixedly arranged at the upper end and the lower end of the coil assembly, and the oil baffle plates 37 are respectively fixedly arranged at the upper ends of the cushion blocks 36 positioned at the upper side and the lower side; the press ring 38 is a paper annular structural member and is used for axially pressing the coil assembly 3, and 1 press ring 38 is fixedly arranged at each of the upper end of the oil baffle plate 37 positioned at the upper side and the lower end of the cushion block 36 positioned at the lower side. The coil assembly 3 is prior art and will not be described in detail. The coil assembly 3 is provided with 3 sets of A phase, B phase and C phase.
Still referring to fig. 1 to 3, the lead 4 includes an end lead 41 and a middle lead 42; the lead 4 is provided with 3 sets.
The clamping assembly 5 includes a hold down pad 51, an upper support beam 52, a lower support beam 53, and a tension rod 54. The number of the pressing cushion blocks 51 is at least 3. The upper support beam 52 and the lower support beam 53 are both rectangular structures, the upper support beam 52 is fixedly provided with a positioning pin 52-1 and a lifting lug 52-2 used for lifting when in use, the front side and the rear side of the upper support beam 52 along the length direction are respectively provided with 1 pull rod through hole, and the upper support beam 52 is provided with 2 pull rod through holes with the same structure. The front side and the rear side of the lower support beam 53 along the length direction are respectively provided with 1 pull rod through hole, the lower support beam 53 is provided with 2 pin holes (not marked in the figure), and the lower support beam 53 is provided with 2 pieces with the same structure. The pull rod 54 is a bolt opposite-pulling rod body, and 4 pull rods 54 are arranged.
The mounting and fixing assembly 6 comprises a wale 61, a left mounting rack 62, a right mounting rack 63, a top limiting piece 64 and a bottom positioning pin 65; the middle part of the waist rail 61 is provided with a mounting connecting lug 61-1, and the mounting connecting lug 61-1 is provided with a bolt hole for connection; the wale 61 is equipped with 2, and left side mounting bracket 62 and right mounting bracket 63 respectively are equipped with 1, and top locating part 64 is equipped with 2, and bottom locating pin 65 is equipped with 4.
During assembly, 3 sets of coil assemblies 3 are respectively arranged in 3 coil assembly mounting holes 11 of a magnetic shielding piece 1, the upper end and the lower end of each coil assembly 3 are respectively pressed by pressing cushion blocks 51 of a clamping assembly 5 in the corresponding coil assembly mounting holes 11, each pressing cushion block 51 is fixed on a corresponding clamping piece of a magnetic shielding clamping assembly 2 nearby through bolts, 2 upper supporting beams 52 and 2 lower supporting beams 53 of the clamping assembly 5 are respectively arranged at the upper end and the lower end of the magnetic shielding piece 1 on the left and right sides, and the upper supporting beams 52 at the left and right sides and the corresponding lower supporting beams 53 are respectively connected and fastened through 2 pull rods 54; the left side and the right side of the middle part of the magnetic shield 1 of 2 waist beams 61 of the installation fixing component 6 are respectively provided with 1 waist beam and fixedly connected with a middle clamping piece 22 bolt of the magnetic shield clamping component 2, the left mounting frame 62 and the right mounting frame 63 are respectively fixedly connected with an installation connecting lug 61-1 bolt of the 1 waist beam 61 by one end, and the lower ends of the 2 top limiting pieces 64 are respectively connected with the corresponding pin of the positioning pins 52-1 of the 2 upper supporting beams 52.
During installation, 4 bottom positioning pins 65 of the installation fixing component 6 are fixedly arranged on the set position of the inner wall of the lower end of the box body of the transformer 100, and 2 pin holes of 2 lower supporting beams 53 of the clamping component 5 are respectively in pin joint with 2 positioning pins 65, so that the lower end of the reactor of the embodiment is limited in the transformer 100; the 2 top limiting pieces 64 of the installation and fixation assembly 6 are fixedly connected with the upper end of the transformer 100 box body through bolts, so that the upper end of the reactor of the embodiment is limited in the transformer 100 through the 2 top limiting pieces 64; the other ends of the left mounting bracket 62 and the right mounting bracket 63 of the mounting and fixing assembly 6 are respectively fixedly connected with the side wall of the box body of the transformer 100, so that the reactor of the embodiment is fixedly mounted in the transformer 100 in an upright manner; end taps of the coils 31 of the phase a, phase B and phase C coil assemblies 3 are electrically connected to the bushings of the corresponding phases of the transformer 100 through end leads 41 of the 1 set of leads 4, respectively; the center taps of the coils 31 of the a-phase, B-phase, and C-phase coil assemblies 3 are electrically connected to the transformer windings of the corresponding phases of the transformer 100 through the center lead 42 of the 1-set lead 4, respectively. Obviously, the opposite connection method can be adopted when in use, namely the middle tap is electrically connected with the sleeve, and the middle tap is electrically connected with the transformer winding.
Preferably, in 3 sets of coil assemblies 3, the winding direction of the coil 31 of the coil assembly 3 in the coil assembly mounting hole 11 arranged in the middle of the magnetic shield 1 is opposite to that of the coil 31 of the other 2 sets of coil assemblies 3, so as to form a reasonable magnetic flux loop and reduce magnetic leakage and interphase mechanical force.
It can be seen from the foregoing that, the vertical current-limiting reactor of built-in three-phase of this embodiment, it is through designing into a whole magnetism shielding frame that is vertical three frame structure of arranging that is by the magnetism shielding clamping component 2 presss from both sides tight magnetism shielding 1, divide 3 sets of coil pack 3 into in 3 coil pack mounting holes 11 of fixed setting in the middle of magnetism shielding 1 about, thereby for the built-in three-phase current-limiting reactor that the level that adopts usually placed among the prior art, can reduce 2/3's bottom area, thereby effectively solved current built-in three-phase current-limiting reactor and caused transformer length long, technical problem with high costs because of bottom area is big. Meanwhile, the vertical three-frame structure adopted by the magnetic shielding piece 1 can effectively reduce the electric energy loss when the reactor is used; in addition, the temperature rise of the reactor in the use process can be effectively reduced through the integral structural design of the coil assembly 3, and a reasonable magnetic flux loop can be formed in use by winding the coil 31 of the coil assembly 3 in the coil assembly mounting hole 11 arranged in the middle of the magnetic shield 1 in the direction opposite to the winding direction of the coil 31 of the other 2 sets of coil assemblies 3, so that the magnetic flux leakage and the interphase mechanical force are reduced; in addition, the built-in three-phase vertical current-limiting reactor of the embodiment can be firmly installed in the transformer oil tank through the structural design of the structural design and the installation fit of the magnetic shielding clamping assembly 2, the clamping assembly 5 and the installation fixing assembly 6, so that the built-in three-phase vertical current-limiting reactor of the embodiment has reliable vibration resistance, transportation impact resistance and low noise performance, and the difficult problem of installation and fixation of the built-in three-phase current-limiting reactor of the vertical structure in the transformer is effectively solved.
The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.
Claims (9)
1. A built-in three-phase vertical current-limiting reactor comprises 3 sets of coil assemblies and matched lead wires, wherein each coil assembly comprises a coil, and the coils are connected in series between a transformer coil and a transformer sleeve through the lead wires; the method is characterized in that: the magnetic shielding device further comprises a magnetic shielding piece used for installing the 3 sets of coil assemblies, a magnetic shielding clamping assembly used for clamping the magnetic shielding piece into a whole, a clamping assembly used for clamping the magnetic shielding piece and the coil assemblies, and an installation fixing assembly fixedly connected with the clamping assembly and used for being connected with a transformer during installation; the magnetic shielding piece is a cuboid structure, the long edge of the magnetic shielding piece is a structural piece arranged in the vertical direction, the upper portion and the lower portion of the magnetic shielding piece are provided with 3 coil assembly mounting holes, and 1 set of 3 sets of coil assemblies are fixedly arranged in the 3 coil assembly mounting holes of the magnetic shielding piece respectively.
2. The built-in three-phase vertical current-limiting reactor according to claim 1, characterized in that: the magnetic shield is a structural part formed by laminating silicon steel sheets, and a plurality of bolt holes for connection and fixation are arranged on the periphery of the magnetic shield and 2 middle cross beams.
3. The built-in three-phase vertical current-limiting reactor according to claim 2, characterized in that: the magnetic shielding clamping assembly comprises an upper clamping piece, a middle clamping piece, a lower clamping piece, a left clamping piece, a right clamping piece and clamping bolts, wherein bolt holes corresponding to the bolt holes of the magnetic shielding pieces are respectively formed in the clamping pieces; the upper clamping piece and the lower clamping piece are respectively transversely provided with 1 piece at the front side and the rear side of the upper end and the lower end of the magnetic shielding piece, and are fixedly connected with the magnetic shielding piece through clamping bolts; the middle clamping piece is transversely provided with 1 piece respectively at the front side and the rear side of 2 middle cross beams of the magnetic shield and is fixedly connected with the magnetic shield through a clamping bolt; the left clamping piece and the right clamping piece are respectively and longitudinally provided with 1 piece at the front side and the rear side of the left end and the right end of the magnetic shielding piece, and are fixedly connected with the magnetic shielding piece through clamping bolts, so that the magnetic shielding piece is clamped into a magnetic shielding frame which is integrally of a vertical three-frame structure by a magnetic shielding clamping assembly.
4. The built-in three-phase vertical current-limiting reactor according to claim 3, characterized in that: the upper clamping piece, the middle clamping piece, the lower clamping piece, the left clamping piece and the right clamping piece of the magnetic shielding clamping assembly are structural members formed by processing angle steel.
5. The built-in three-phase vertical current-limiting reactor according to claim 3, characterized in that: the clamping assembly comprises a pressing cushion block, an upper supporting beam, a lower supporting beam and a pull rod; the upper support beam is provided with a plurality of positioning pins and 2 pull rod through holes, and the lower support beam is provided with 2 pull rod through holes and 2 pin holes; the upper supporting beam and the lower supporting beam are respectively provided with 2 rods with the same structure, the pull rod is a rod body piece with bolts in opposite pulling type, and the number of the pull rods is 4; the 3 sets of coil assemblies are respectively compressed by compression cushion blocks in 3 coil assembly mounting holes of the magnetic shielding component, and each compression cushion block is fixedly connected with a close clamping piece in the magnetic shielding clamping component through a bolt; 2 last supporting beams and 2 lower support beams are located the upper and lower both ends of magnetism shielding part about dividing, are located respectively through 2 pull rods between the last supporting beam and the lower support beam of left and right sides and are connected the fastening.
6. The built-in three-phase vertical current-limiting reactor according to claim 4, characterized in that: the mounting and fixing assembly comprises a left mounting rack, a right mounting rack, 2 waist beams, 2 top limiting pieces and 4 bottom positioning pins; the middle part of the waist beam is provided with a mounting connecting lug; 2 waist beams are respectively provided with 1 on the left side and the right side of the middle part of the magnetic shielding piece and are fixedly connected with a middle clamping piece bolt of the magnetic shielding clamping assembly, 4 bottom positioning pins are fixedly arranged on the inner wall of the lower end of the transformer box body, and 2 pin holes of 2 lower supporting beams are respectively in pin joint with 2 positioning pins; one end of each of the left mounting frame and the right mounting frame is fixedly connected with the mounting lug bolts of the 1 waist beam, and the other end of each of the left mounting frame and the right mounting frame is fixedly connected with the side wall of the transformer box body; the lower ends of the 2 top limit pieces are correspondingly connected with the positioning pins of the 2 upper supporting beams in a pin joint mode; the upper end of 2 top locating parts is fixedly connected with the upper end of the transformer box body through bolts.
7. The built-in three-phase vertical current-limiting reactor according to claim 1, characterized in that: the coil is formed by connecting an upper continuous coil and a lower continuous coil which are symmetrically arranged in parallel; the coil has end taps and a middle tap; end taps and middle taps of the coils of the 3 coil assemblies are respectively and correspondingly electrically connected with the corresponding sleeve of the transformer and the coil of the transformer through leads; or, the end taps and the middle taps of the coils of the 3 coil assemblies are respectively and correspondingly and electrically connected with the transformer coil and the sleeve corresponding to the transformer through the lead wires.
8. The built-in three-phase vertical current-limiting reactor according to claim 1, characterized in that: in the 3 sets of coil assemblies, the winding direction of the coil assembly arranged in the coil assembly mounting hole with the magnetic shielding piece positioned in the middle is opposite to the winding direction of the coil of the other 2 sets of coil assemblies.
9. The built-in three-phase vertical current-limiting reactor according to any one of claims 1 to 8, characterized in that: the coil assembly further comprises an inner insulating cylinder, an inner stay, an outer insulating cylinder, a cushion block, an oil baffle plate and a pressure ring; the coil winding structure is characterized in that the inner supporting strips are longitudinally and fixedly arranged on the outer peripheral surface of the inner insulating cylinder at intervals, the coil is wound on the inner supporting strips, the outer supporting strips are longitudinally and fixedly arranged on the inner wall of the outer insulating cylinder at intervals, the inner end surfaces of the outer supporting strips are abutted to the coil, a coil assembly is formed by the inner insulating cylinder, the inner supporting strips, the coil, the outer supporting strips and the outer insulating cylinder together, the upper end and the lower end of the coil assembly are respectively and fixedly provided with one, the upper ends of the cushion blocks positioned on the upper side and the lower end of the cushion block positioned on the lower side of the oil baffle plate are respectively and fixedly provided with 1, and the compression rings are respectively and fixedly provided with 1 at the upper ends of the oil baffle plate positioned on the upper side and at the lower ends of the cushion blocks positioned on the lower side of the oil baffle plate positioned on the upper side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121467607.2U CN215868948U (en) | 2021-06-29 | 2021-06-29 | Built-in three-phase vertical current-limiting reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121467607.2U CN215868948U (en) | 2021-06-29 | 2021-06-29 | Built-in three-phase vertical current-limiting reactor |
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| CN215868948U true CN215868948U (en) | 2022-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU213680U1 (en) * | 2022-07-12 | 2022-09-22 | Общество с ограниченной ответственностью "СвердловЭлектро" (ООО "СвердловЭлектро") | ARMORED REACTOR WITH VERTICAL PHASE INSTALLATION |
-
2021
- 2021-06-29 CN CN202121467607.2U patent/CN215868948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU213680U1 (en) * | 2022-07-12 | 2022-09-22 | Общество с ограниченной ответственностью "СвердловЭлектро" (ООО "СвердловЭлектро") | ARMORED REACTOR WITH VERTICAL PHASE INSTALLATION |
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