Tap assembly of pouring type transformer and pouring type transformer

Abstract

The utility model discloses a tapping assembly of a pouring type transformer, which comprises a first end plate, a second end plate, a third end plate and a fourth end plate, the second end plate is arranged opposite to the first end plate; the tapping plate is mounted between the first end plate and the second end plate, and at least two mounting holes for mounting tapping terminals are formed in the tapping plate; the first end plate and the second end plate can be correspondingly arranged at the two ends of the coil, and the tapping plate is located on one side of the coil. Therefore, the first end plate, the second end plate and the tapping plate can reinforce the pouring type transformer, so that the coil can be protected, meanwhile, the tapping terminal can be fixed due to the fact that the tapping terminal is installed in the installation hole of the tapping plate, and damage to an insulating part when a bolt is arranged on the tapping terminal is reduced. In addition, the utility model further discloses the pouring type transformer with the tapping assembly of the pouring type transformer.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a tapping assembly of a cast-type transformer and a cast-type transformer. Background Art

[0002] Casting transformers are made by pouring insulating glue on the coils. This type of transformer has strong short-circuit impact resistance. However, due to the low hardness and insufficient mechanical strength of the insulating parts formed by pouring, the coils of cast transformers are easily damaged during lifting and transportation, so it takes a lot of time to repair the coils, which seriously affects production efficiency.

[0003] In addition, multiple tap terminals need to be cast and installed on the coil during casting. When the transformer is in use, tap plates and bolts need to be installed at the tap terminals to connect and switch between the tap terminals. However, since the insulating parts formed by casting are soft in texture, the tap terminals cannot be effectively fixed, which can cause the tap terminals to shake easily under the action of external force. When the tap terminals are bolted, the insulating parts near the tap terminals may be damaged or even cracked or fall off. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a tapping assembly of a cast-type transformer, which can be combined with a coil to protect the coil and an insulating member formed by casting.

[0005] The utility model also provides a cast-type transformer provided with the tapping assembly of the cast-type transformer.

[0006] According to the tap assembly of the cast transformer according to the embodiment of the utility model, it includes: a first end plate, which is provided with at least one first through hole; a second end plate, which is arranged opposite to the first end plate; a tap plate, which is installed between the first end plate and the second end plate, and the tap plate is provided with at least two mounting holes for mounting tap terminals; wherein the first end plate and the second end plate can be arranged correspondingly at the two ends of the coil, and the tap plate is located on one side of the coil.

[0007] The tap assembly of the cast-type transformer according to the embodiment of the utility model has at least the following beneficial effects:

[0008] By adopting the tap assembly of the cast transformer of the embodiment of the utility model, the tap assembly includes a first end plate, a second end plate and a tap plate, the tap plate is installed between the first end plate and the second end plate, before the coil is cast, the coil is placed between the first end plate and the second end plate, and the tap plate is located on one side of the coil. Since the tap plate is provided with a mounting hole for mounting the tap terminal, the tap terminal can be firstly mounted in the mounting hole and electrically connected to the coil. When casting, the first through hole of the first end plate can be used as a pouring port for insulating glue, so that the insulating glue is cast to form a The formed insulating member can tightly combine the tap assembly and the coil together, and the first end plate, the second end plate and the tap plate can reinforce the cast-type transformer, thereby reducing the damage to the coil caused by the cast-type transformer during lifting and transportation, and protecting the coil. At the same time, since the tap terminal is installed in the mounting hole of the tap plate instead of being directly installed on the coil by pouring insulating glue, the tap terminal can be fixed, which can not only reduce the shaking of the tap terminal caused by external force, but also reduce the damage to the insulating member when the tap terminal is bolted.

[0009] According to some embodiments of the utility model, the first end plate has a first annular portion adapted to the upper end of the coil and a first connecting portion extending outward relative to the first annular portion, the first connecting portion is provided with a first mounting groove, and the first mounting groove penetrates the first connecting portion in the up and down directions; the second end plate has a second annular portion adapted to the lower end of the coil and a second connecting portion extending outward relative to the second annular portion, the second connecting portion is arranged opposite to the first connecting portion, and a second mounting groove is provided on the upper surface of the second connecting portion; the upper end of the junction plate is inserted into the first mounting groove, and the lower end of the junction plate is inserted into the second mounting groove and abuts against the bottom wall of the second mounting groove.

[0010] According to some embodiments of the present invention, the first through hole is opened in the first connecting portion and is located at one side of the first mounting groove.

[0011] According to some embodiments of the present invention, the second connecting portion is provided with at least one second through hole, and the second through hole is located at one side of the second mounting groove.

[0012] According to some embodiments of the present invention, the first annular portion is provided with at least two third through holes, and all the third through holes are arranged at intervals along the circumference of the first annular portion; the second annular portion is provided with at least two fourth through holes, and all the fourth through holes are arranged at intervals along the circumference of the second annular portion.

[0013] According to some embodiments of the present utility model, the junction plate is further provided with at least one fifth through hole.

[0014] According to some embodiments of the present invention, at least two of the fifth through holes are arranged at intervals in the up-down direction, and at least one of the mounting holes is located between two adjacent fifth through holes.

[0015] According to some embodiments of the present utility model, a marking portion is provided on the surface of the breakout board, and the marking portion is used to mark the installation direction of the breakout board.

[0016] According to an embodiment of the utility model, a cast transformer comprises a coil and a tap assembly of the cast transformer as described in any of the above embodiments, wherein the first end plate is located at the upper end of the coil and abuts against the upper end surface of the coil, the second end plate is located at the lower end of the coil and abuts against the lower end surface of the coil, the tap plate is located on one side of the coil, and each of the mounting holes is installed with a tap terminal; and further comprises an insulating member, the insulating member wraps the coil and the tap assembly of the cast transformer, and the insulating member fills the first through hole, and each of the tap terminals extends to the outside of the insulating member.

[0017] The cast-type transformer according to the embodiment of the utility model has at least the following beneficial effects:

[0018] By setting a tap assembly of the cast-type transformer of any of the above-mentioned embodiments, the tap assembly includes a first end plate, a second end plate and a tap plate. During casting, the tap terminal can be first installed in the mounting hole and electrically connected to the coil. The first end plate, the second end plate and the tap plate can reinforce the cast-type transformer, thereby reducing damage to the coil caused by the cast-type transformer during lifting and transportation, and protecting the coil. At the same time, since the tap terminal is installed in the mounting hole of the tap plate instead of being directly installed on the coil by casting insulating glue, the tap terminal can be fixed, which can not only reduce the shaking of the tap terminal caused by external force, but also reduce the cracking, falling and other damages caused to the insulating parts near the tap terminal when the tap terminal is bolted, thereby protecting the insulating parts formed by casting, and making the structure of the cast-type transformer more stable.

[0019] According to some embodiments of the present invention, the insulating member is made of silicone rubber.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1A schematic diagram of a tap assembly of a cast-type transformer according to an embodiment of the utility model;

[0023] Figure 2 for Figure 1 An exploded schematic diagram of a tap assembly of a cast-type transformer is shown;

[0024] Figure 3 A schematic diagram of installing a tap terminal in a tap assembly of a cast-type transformer according to an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of a first end plate of an embodiment of the utility model;

[0026] Figure 5 A schematic diagram of a second end plate of an embodiment of the utility model;

[0027] Figure 6 A schematic diagram of a breakout board according to an embodiment of the utility model;

[0028] Figure 7 A schematic diagram of a cast-type transformer according to an embodiment of the utility model;

[0029] Figure 8 Another schematic diagram of a cast-type transformer according to an embodiment of the utility model.

[0030] Reference numerals:

[0031] A first end plate 100, a first annular portion 101, a first connecting portion 102, a first through hole 110, a third through hole 120, and a first mounting groove 130;

[0032] The second end plate 200, the second annular portion 201, the second extension portion 202, the second through hole 210, the fourth through hole 220, and the second mounting groove 230;

[0033] The tapping plate 300, the mounting hole 310, the fifth through hole 320, and the identification portion 330;

[0034] The coil 400 , the tap terminal 410 , and the insulating member 420 . DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] Reference Figures 1 to 6 In one embodiment of the utility model, a tap assembly of a cast transformer is provided, the tap assembly includes a first end plate 100, a second end plate 200 and a tap plate 300, the first end plate 100 is provided with two first through holes 110. The second end plate 200 is arranged opposite to the first end plate 100. The tap plate 300 is installed between the first end plate 100 and the second end plate 200, and the tap plate 300 is provided with eight mounting holes 310 for mounting tap terminals 410. The first end plate 100 and the second end plate 200 can be arranged at the two ends of the coil 400 correspondingly, and the tap plate 300 is located on one side of the coil 400.

[0040] In the above structure, by adopting the tap assembly of the cast transformer of the embodiment of the utility model, the tap assembly includes a first end plate 100, a second end plate 200 and a tap plate 300, and the tap plate 300 is installed between the first end plate 100 and the second end plate 200. Before casting the coil 400, the coil 400 is placed between the first end plate 100 and the second end plate 200, and the tap plate 300 is located on one side of the coil 400. Since the tap plate 300 is provided with a mounting hole 310 for mounting the tap terminal 410, the tap terminal 410 can be firstly mounted in the mounting hole 310 and electrically connected to the coil 400. When casting, the first through hole 110 of the first end plate 100 can be used as a pouring port for the insulating glue, so that the insulating member 420 formed after the insulating glue is poured can The tap assembly and the coil 400 are tightly combined together, and the first end plate 100, the second end plate 200 and the tap plate 300 can reinforce the cast transformer, thereby reducing the damage to the coil 400 caused by the cast transformer during lifting and transportation, and protecting the coil 400. At the same time, since the tap terminal 410 is installed in the mounting hole 310 of the tap plate 300, rather than being directly installed on the coil 400 by pouring insulating glue, the tap terminal 410 can be fixed, which can not only reduce the shaking of the tap terminal 410 caused by external force, but also reduce the cracking, falling and other damages caused to the insulating member 420 near the tap terminal 410 when the tap terminal 410 is bolted, thereby protecting the insulating member 420 formed by casting.

[0041] It is understandable that the first end plate 100 has two first through holes 110, so that the coil 400 can be simultaneously poured with insulating glue through the two first through holes 110, shortening the pouring time of the insulating glue and improving the pouring efficiency. It can also reduce the risk of bubbles remaining in the coil 400 due to too long pouring time, avoid subsequent rework, and improve the yield rate of cast-type transformer production. It should be noted that the first end plate 100 has two first through holes 110, which is only for Figures 1 to 6 The number of the first through holes 110 provided on the first end plate 100 may be two, one, three or more, and the present invention does not make any specific limitation on this.

[0042] It is understandable that the above-mentioned tap board 300 is provided with eight mounting holes 310 for mounting the tap terminals 410, which is only for Figures 1 to 6 The number of the mounting holes 310 provided on the junction plate 300 may be, in addition to eight, two, three, four, five, six, seven, nine or more, which may be selected according to actual needs, and the present invention does not make any specific limitation on this.

[0043] Reference Figures 1 to 6 In some embodiments, the first end plate 100 has a first annular portion 101 adapted to the upper end of the coil 400 and a first connecting portion 102 extending outwardly relative to the first annular portion 101, and the first connecting portion 102 is provided with a first mounting groove 130, and the first mounting groove 130 penetrates the first connecting portion 102 in the up-down direction. The second end plate 200 has a second annular portion 201 adapted to the lower end of the coil 400 and a second connecting portion extending outwardly relative to the second annular portion 201, the second connecting portion is arranged opposite to the first connecting portion 102, and a second mounting groove 230 is provided on the upper surface of the second connecting portion. The upper end of the junction plate 300 is inserted into the first mounting groove 130, and the lower end of the junction plate 300 is inserted into the second mounting groove 230 and abuts against the bottom wall of the second mounting groove 230.

[0044] In the above structure, the first end plate 100 is divided into a first annular portion 101 and a first connecting portion 102 extending outwardly relative to the first annular portion 101, and the second end plate 200 is divided into a second annular portion 201 and a second connecting portion extending outwardly relative to the second annular portion 201. The first connecting portion 102 and the second connecting portion are arranged relatively to each other, so that the junction plate 300 can be fixed and limited by the first connecting portion 102 and the second connecting portion, so that the junction plate 300 is located on one side of the coil 400 during casting. By providing a first mounting groove 130 in the first connecting portion 102 and a second mounting groove 230 in the second connecting portion, the upper end of the tap plate 300 can be inserted into the first mounting groove 130, and the lower end of the tap plate 300 can be inserted into the second mounting groove 230 and abut against the bottom wall of the second mounting groove 230, thereby fixing and limiting the tap plate 300. Moreover, since the first mounting groove 130 is a through groove penetrating the first connecting portion 102 in the up-down direction, the height of the first end plate 100 can be adjusted according to the movement of the tap plate 300 relative to the height of the coil 400, so that the first end plate 100 can abut against the upper end of the coil 400 while cooperating with the second end plate 200 to fix and limit the tap plate 300, so as to facilitate the subsequent insulating glue pouring process, thereby making the pouring process of the cast-type transformer more flexible and the structure after pouring more stable.

[0045] It can be understood that the first installation groove 130 is a through groove that penetrates the first connecting portion 102 in the vertical direction. Figures 1 to 6 As an exemplary illustration, in some embodiments, the second installation groove 230 may also be configured as a through groove that penetrates the second connection portion in the up-down direction, and the present invention does not make any specific limitation on this.

[0046] Reference Figures 1 to 6 In some embodiments, the first through hole 110 is opened in the first connecting portion 102 and is located at one side of the first mounting groove 130 .

[0047] In the above structure, since the first connecting portion 102 is connected to the first annular portion 101 and extends outward relative to the first annular portion 101, when the first end plate 100 is placed on the upper end of the coil 400, the first annular portion 101 is adapted to the upper end of the coil 400, and the first connecting plate is located on one side of the coil 400. Therefore, by opening the first through hole 110 in the first connecting portion 102, there are no other obstacles or shielding objects under the first through hole 110 during casting, so that the insulating glue can be smoothly injected from the first through hole 110 and fill the entire casting mold, thereby making the casting process smoother, which is beneficial to shortening the casting time of the insulating glue and improving the production efficiency of the cast transformer.

[0048] Reference Figures 1 to 6 In some embodiments, the second connecting portion is provided with two second through holes 210 , and the second through holes 210 are located on one side of the second mounting groove 230 .

[0049] In the above structure, by opening the second through hole 210 in the second connection part, when in use, the second through hole 210 can be selected as the pouring port of the insulating glue, or, when the first through hole 110 is selected as the pouring port, the insulating glue can flow from the first through hole 110 and fill into the second through hole 210, so that the insulating member 420 formed after the insulating glue is poured can be tightly bonded to the peripheral wall of the second through hole 210, thereby making the connection between the second end plate 200 and the coil 400 more secure, and can better reinforce the cast-type transformer, making the structure of the cast-type transformer more stable. Reduce the damage to the coil 400 caused by the cast-type transformer during lifting and transportation, and protect the coil 400.

[0050] It can be understood that the second connection portion is provided with two second through holes 210, which can further strengthen the connection between the insulating member 420 formed by the insulating glue and the second end plate 200, making the structure of the cast-type transformer more solid and stable. When the second through hole 210 is selected as the pouring port of the insulating glue, the coil 400 can be poured with the insulating glue through the two second through holes 210 at the same time, shortening the pouring time of the insulating glue and improving the pouring efficiency. At the same time, it can also reduce the risk of bubbles staying in the coil 400 due to too long pouring time, avoid subsequent rework, and improve the yield rate of cast-type transformer production. It should be noted that the second connection portion of the second end plate 200 is provided with two second through holes 210, which is only for Figures 1 to 6 The number of the second through holes 210 provided on the second connecting portion may be two, one, three or more, which is not specifically limited in the present invention.

[0051] Reference Figures 1 to 6In some embodiments, the first annular portion 101 is provided with at least ten third through holes 120 , and all the third through holes 120 are arranged at intervals along the circumference of the first annular portion 101 .

[0052] In the above structure, by opening ten third through holes 120 in the first annular portion 101, the third through holes 120 can also be used as pouring ports during pouring, so that the coil 400 can be poured simultaneously with multiple holes, shortening the pouring time and improving efficiency, while avoiding the pouring time being too long, bubbles staying in the coil 400, and causing subsequent rework. Secondly, when the insulating glue is filled in the third through hole 120, the insulating part 420 formed after the insulating glue is poured can be tightly bonded to the peripheral wall of the third through hole 120, thereby making the connection between the first end plate 100 and the coil 400 more secure, and the cast transformer can be better reinforced, making the structure of the cast transformer more stable. Reduce the damage to the coil 400 caused by the cast transformer during lifting and transportation, and protect the coil 400. In addition, by arranging multiple third through holes 120 at intervals along the circumference of the first annular portion 101, the third through hole 120 can be used as an observation window to prevent the coil 400 from being poured high, saving the amount of insulating glue.

[0053] It is understandable that the first annular portion 101 is provided with at least ten third through holes 120, which is only for Figures 1 to 6 As an exemplary illustration, the number of the third through holes 120 may be ten, or may be two, three, four, five or more, which is not specifically limited in the present invention.

[0054] It is understandable that, in order to facilitate the processing and opening of the third through hole 120, the third through hole 120 can be specifically an arc-shaped hole opened in the first annular portion 101 and arranged along the circumference of the first annular portion 101. It should be noted that, in addition to being an arc-shaped hole, the third through hole 120 can also be a circular hole, a square hole or a hole of other shapes, which is not specifically limited in the present invention.

[0055] Reference Figures 1 to 6 In some embodiments, the second annular portion 201 is provided with ten fourth through holes 220 , and all the fourth through holes 220 are arranged at intervals along the circumference of the second annular portion 201 .

[0056] In the above structure, ten fourth through holes 220 are opened in the second annular portion 201, so that the fourth through holes 220 can be used as pouring ports at the same time during pouring, so that the coil 400 can be poured simultaneously in multiple holes, shortening the pouring time and improving efficiency, while avoiding the pouring time being too long and bubbles staying in the coil 400, causing subsequent rework. Secondly, when the insulating glue is filled in the fourth through holes 220, the insulating part 420 formed after the insulating glue is poured can be tightly bonded to the surrounding wall of the fourth through hole 220, thereby making the connection between the second end plate 200 and the coil 400 more secure, and the cast-type transformer can be better reinforced, making the structure of the cast-type transformer more stable. Reduce the damage to the coil 400 caused by the cast-type transformer during lifting and transportation, and protect the coil 400. In addition, by arranging a plurality of fourth through holes 220 at intervals along the circumferential direction of the first annular portion 101 , the fourth through holes 220 can also be used as observation windows, which facilitates observation by operators, prevents the coil 400 from being poured high, and saves the amount of insulating glue.

[0057] It is understandable that the second annular portion 201 is provided with at least ten fourth through holes 220, which is only for Figures 1 to 6 As an exemplary illustration, the number of the fourth through holes 220 may be ten, or may be two, three, four, five or more, which is not specifically limited in the present invention.

[0058] It is understandable that, in order to facilitate the processing and opening of the fourth through hole 220, the fourth through hole 220 can be specifically an arc-shaped hole opened in the second annular portion 201 and arranged along the circumference of the second annular portion 201. It should be noted that, in addition to being an arc-shaped hole, the fourth through hole 220 can also be a circular hole, a square hole or a hole of other shapes, which is not specifically limited in the present invention.

[0059] Reference Figures 1 to 6 In some embodiments, the junction board 300 further has two fifth through holes 320 .

[0060] In the above structure, by setting the fifth through hole 320, the insulating glue can be filled into the fifth through hole 320, and the insulating member 420 formed after the insulating glue is poured can be tightly bonded to the peripheral wall of the fifth through hole 320, thereby making the connection between the tap plate 300 and the coil 400 more secure, and can better reinforce the cast-type transformer, making the structure of the cast-type transformer more stable, reducing the damage to the coil 400 caused by the cast-type transformer during lifting and transportation, and protecting the coil 400. At the same time, since the tap terminal 410 is installed in the mounting hole 310 of the tap plate 300, the connection between the tap plate 300 and the coil 400 is more secure, and the installation of the tap terminal 410 can also be made more secure, which can not only reduce the shaking of the tap terminal 410 caused by external force, but also reduce the damage such as cracking and falling of the insulating part 420 near the tap terminal 410 when the tap terminal 410 is bolted, thereby protecting the cast insulating part 420.

[0061] It is understandable that the two fifth through holes 320 provided on the above-mentioned branch board 300 are only for Figures 1 to 6 The number of the fifth through holes 320 provided on the tapping plate 300 may be two, one, three, four or more, which is not specifically limited in the present invention.

[0062] Reference Figures 1 to 6 In some embodiments, at least two fifth through holes 320 are arranged at intervals in the up-down direction, and at least one mounting hole 310 is located between two adjacent fifth through holes 320 .

[0063] In the above structure, by arranging at least one mounting hole 310 between two adjacent fifth through holes 320, the upper and lower parts of the mounting hole 310 are in full contact with the insulating glue, which can increase the balance of fixing the tap plate 300, make the distribution of the various parts of the tap plate 300 connected with the insulating glue more even, make the connection between the tap plate 300 and the coil 400 more secure, and thus make the installation of the tap terminal 410 more secure, which can not only reduce the shaking of the tap terminal 410 caused by external force, but also reduce the damage such as cracking and falling of the insulating member 420 near the tap terminal 410 when the bolting operation is performed on the tap terminal 410, so as to protect the cast insulating member 420.

[0064] Specifically, refer to Figures 1 to 6In some embodiments, the number of the fifth through holes 320 is two, and the two fifth through holes 320 are arranged at intervals in the up-down direction. The number of the mounting holes 310 is eight, of which six mounting holes 310 are located between the two fifth through holes 320, one mounting hole 310 is provided at the top of the mounting plate and located above the two fifth through holes 320, and one mounting hole 310 is provided at the bottom of the mounting plate and located below the two fifth through holes 320.

[0065] Reference Figures 1 to 6 In some embodiments, a marking portion 330 is disposed on the surface of the breakout board 300 , and the marking portion 330 is used to mark the installation direction of the breakout board 300 .

[0066] In the above structure, by providing the identification portion 330 , it is convenient for operators to identify the front and back sides and the upper and lower ends of the tap plate 300 , making the installation of the tap plate 300 more convenient and helping to improve the production efficiency of the cast-type transformer.

[0067] It is understandable that, referring to Figures 1 to 6 The identification part 330 can be a "positive" character arranged on the upper left of the tapping board 300. Of course, other identification structures can also be used, and the utility model does not make specific limitations on this.

[0068] Reference Figure 7 and Figure 8 , an embodiment of the utility model further provides a cast-type transformer, the cast-type transformer comprises a coil 400 and a tap assembly of the cast-type transformer of any of the above embodiments, wherein the first end plate 100 is located at the upper end of the coil 400 and abuts against the upper end surface of the coil 400, the second end plate 200 is located at the lower end of the coil 400 and abuts against the lower end surface of the coil 400, the tap plate 300 is located at one side of the coil 400, and each mounting hole 310 is installed with a tap terminal 410. In addition, an insulating member 420 is included, the insulating member 420 wraps the coil 400 and the tap assembly of the cast-type transformer, and the insulating member 420 fills the first through hole 110, and each tap terminal 410 extends to the outside of the insulating member 420.

[0069] In the above structure, by setting a tap assembly of the cast transformer of any of the above embodiments, the tap assembly includes a first end plate 100, a second end plate 200 and a tap plate 300, and the tap plate 300 is installed between the first end plate 100 and the second end plate 200. Before casting the coil 400, the coil 400 is placed between the first end plate 100 and the second end plate 200, and the tap plate 300 is located on one side of the coil 400. Since the tap plate 300 is provided with a mounting hole 310 for mounting the tap terminal 410, the tap terminal 410 can be firstly mounted in the mounting hole 310 and electrically connected to the coil 400. When casting, the first through hole 110 of the first end plate 100 can be used as a pouring port for the insulating glue, so that the insulating member 420 formed after the insulating glue is poured can separate the tap assembly and the coil 400. 00 are closely combined together, the first end plate 100, the second end plate 200 and the tap plate 300 can reinforce the cast-type transformer, thereby reducing the damage to the coil 400 caused by the cast-type transformer during lifting and transportation, and protecting the coil 400. At the same time, since the tap terminal 410 is installed in the mounting hole 310 of the tap plate 300, rather than being directly installed on the coil 400 by pouring insulating glue, the tap terminal 410 can be fixed, which can not only reduce the shaking of the tap terminal 410 caused by external force, but also reduce the cracking, falling and other damages caused to the insulating member 420 near the tap terminal 410 when the tap terminal 410 is bolted, thereby protecting the insulating member 420 formed by pouring, and making the structure of the cast-type transformer more stable.

[0070] In some embodiments, the insulating member 420 is made of silicone rubber.

[0071] In the above structure, by setting the rubber part as a silicone rubber part, that is, using silicone rubber as the insulating glue to cast the coil 400, silicone rubber has the characteristics of not easy to crack, high temperature resistance, and extremely strong resistance to short-circuit impact. In addition, silicone rubber can be recycled and has good environmental protection performance. By using silicone rubber as the insulating glue to cast the coil 400, the structure of the cast transformer can be made more stable, and the cast transformer has a strong resistance to short-circuit impact, and has the advantages of low noise and environmental protection.

[0072] It is understandable that the insulating member 420 may be made of epoxy resin in addition to silicone rubber, that is, epoxy resin is used as the insulating glue to cast the coil 400. The present invention does not specifically limit the specific type of the insulating member 420.

[0073] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A tapping assembly for a cast-type transformer, characterized in that: include: The first end plate (100) is provided with at least one first through hole (110); a second end plate (200), arranged opposite to the first end plate (100); A tapping plate (300) is installed between the first end plate (100) and the second end plate (200), and the tapping plate (300) is provided with at least two mounting holes (310) for mounting tapping terminals (410); The first end plate (100) and the second end plate (200) can be arranged at two ends of the coil (400) respectively, and the junction plate (300) is located on one side of the coil (400).

2. The tapping assembly of the cast-type transformer according to claim 1, characterized in that: The first end plate (100) comprises a first annular portion (101) adapted to the upper end of the coil (400) and a first connecting portion (102) extending outwardly relative to the first annular portion (101), the first connecting portion (102) being provided with a first mounting groove (130), the first mounting groove (130) penetrating the first connecting portion (102) in the up-down direction; The second end plate (200) comprises a second annular portion (201) adapted to the lower end of the coil (400) and a second connecting portion extending outwardly relative to the second annular portion (201), the second connecting portion being arranged opposite to the first connecting portion (102), and a second mounting groove (230) being provided on an upper surface of the second connecting portion; The upper end of the junction plate (300) is inserted into the first installation groove (130), and the lower end of the junction plate (300) is inserted into the second installation groove (230) and abuts against the bottom wall of the second installation groove (230).

3. The tapping assembly of the cast-type transformer according to claim 2, characterized in that: The first through hole (110) is opened in the first connecting portion (102) and is located on one side of the first mounting groove (130).

4. The tapping assembly of the cast-type transformer according to claim 2, characterized in that: The second connecting portion is provided with at least one second through hole (210), and the second through hole (210) is located on one side of the second mounting groove (230).

5. The tapping assembly of the cast-type transformer according to claim 2, characterized in that: The first annular portion (101) is provided with at least two third through holes (120), and all the third through holes (120) are arranged at intervals along the circumference of the first annular portion (101); The second annular portion (201) is provided with at least two fourth through holes (220), and all the fourth through holes (220) are arranged at intervals along the circumference of the second annular portion (201).

6. The tap assembly of the cast-type transformer according to claim 1, characterized in that: The branching plate (300) is also provided with at least one fifth through hole (320).

7. The tap assembly of the cast-type transformer according to claim 6, characterized in that: At least two of the fifth through holes (320) are arranged at intervals in the up-down direction, and at least one of the mounting holes (310) is located between two adjacent fifth through holes (320).

8. The tap assembly of the cast-type transformer according to claim 1, characterized in that: The surface of the junction plate (300) is provided with an identification portion (330), and the identification portion (330) is used to identify the installation direction of the junction plate (300).

9. Cast-type transformer, characterized in that: The invention comprises a coil (400) and a tap assembly of a cast-type transformer according to any one of claims 1 to 8, wherein the first end plate (100) is located at the upper end of the coil (400) and abuts against the upper end surface of the coil (400), the second end plate (200) is located at the lower end of the coil (400) and abuts against the lower end surface of the coil (400), the tap plate (300) is located at one side of the coil (400), and each of the mounting holes (310) is installed with a tap terminal (410); It also includes an insulating member (420), wherein the insulating member (420) wraps the coil (400) and the tap assembly of the cast transformer, and the insulating member (420) fills the first through hole (110), and each of the tap terminals (410) extends to the outside of the insulating member (420).

10. The cast-type transformer according to claim 9, characterized in that: The insulating member (420) is made of silicone rubber.

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