CN216133745U - Transformer with built-in air-core reactor - Google Patents

Abstract

The utility model discloses a transformer with a built-in air-core reactor, which comprises: the reactor comprises a reactor body, three hollow coils in the reactor body, two upper clamping pieces and upper pressing pieces which are sequentially arranged on the hollow coils from top to bottom, a lower supporting piece and two lower clamping pieces which are sequentially arranged on the lower surfaces of the hollow coils from top to bottom, and a pull rod assembly which penetrates through the reactor body and fixedly connects the upper pressing pieces and the lower supporting pieces; the upper clamping piece is fixedly connected with the upper pressing piece through an upper fastening piece, and the lower clamping piece is fixedly connected with the lower supporting piece through a lower fastening piece. The upper pressing piece and the lower supporting piece are arranged and connected through the pull rod group, so that the stability of the whole device is enhanced, and devices related to shock absorption are arranged, so that the anti-loosening performance is enhanced while the anti-vibration performance is enhanced.

Description

Transformer with built-in air-core reactor

Technical Field

The utility model relates to the field of reactor fixing, in particular to a transformer with an air-core reactor inside.

Background

The power transformer is an important transformer device with a built-in air-core reactor in a power transmission and transformation system, and currently, in order to improve the short-circuit resistance of the transformer, the application amount of a high-resistance transformer is increasing. Because the air reactor has stronger large current impact resistance, good linearity and strong saturation resistance, more and more manufacturers select the series air reactor to improve the impedance of the transformer.

However, the air core reactor has a large vibration during operation, and may have a problem of positional deviation during transportation or an excessive noise due to the vibration.

In the prior art, generally, a transformer clamp is connected with an iron yoke of a reactor through some fixing assemblies, but firstly, because the iron yoke is not arranged in the air-core reactor, the former fixing mode is not advisable; secondly, even if the air-core reactor is provided with the iron yoke, the air-core reactor is fixed on the iron yoke, some magnetic conduction pieces may appear in the fixing assembly, the original trend of the magnetic circuit is easily influenced, and potential safety hazards are caused to the normal operation of the reactor.

Disclosure of Invention

The utility model overcomes the defect that the built-in reactor of the transformer is difficult to fix in the prior art, provides the transformer with the built-in air-core reactor, and adopts the technical scheme that: a transformer with an air core reactor built therein, comprising: the reactor comprises a reactor body, three hollow coils in the reactor body, two upper clamping pieces and upper pressing pieces which are sequentially arranged on the hollow coils from top to bottom, a lower supporting piece and two lower clamping pieces which are sequentially arranged on the lower surfaces of the hollow coils from top to bottom, and a pull rod assembly which penetrates through the reactor body and fixedly connects the upper pressing pieces and the lower supporting pieces; the upper clamping piece is fixedly connected with the upper pressing piece through an upper fastening piece, and the lower clamping piece is fixedly connected with the lower supporting piece through a lower fastening piece.

In a preferred embodiment of the present invention, the upper fastening member includes an upper beam disposed between two upper clamping members and an upper fastening screw, a bottom portion of each upper clamping member is fixedly connected to the upper fastening screw through a connecting screw sleeve, and the upper fastening screw passes through the upper pressing member and is fixedly connected to the upper pressing member through a fastening nut.

In a preferred embodiment of the present invention, the lower fastening member includes a reinforcing rib for stabilizing the two lower clamping members, a fixing plate disposed between the lower clamping members and the lower supporting member, the fixing plate and the lower supporting member are fixedly connected by a lower fastening bolt, and the lower fastening bolt includes a spring washer and an insulating washer disposed between the bolt head and the fixing plate, and a spring washer disposed between the lower fastening member and the fixing nut.

In a preferred embodiment of the present invention, a plurality of pads are fixedly disposed under the lower clip.

In a preferred embodiment of the present invention, a shock-absorbing rubber pad is laid between the foot pad and the ground, and a shock-absorbing insulating pad is disposed between the fixing plate and the lower supporting member.

In a preferred embodiment of the present invention, the pull rod set includes three central pull rods respectively disposed at the central positions of the three hollow coils and four side pull rods uniformly disposed around the central hollow coil.

The utility model solves the defects in the background technology, and has the following beneficial effects:

the upper pressing piece and the lower supporting piece are arranged and connected through the pull rod group, so that the stability of the whole device is enhanced, and devices related to shock absorption are arranged, so that the anti-loosening performance is enhanced while the anti-vibration performance is enhanced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.

Fig. 1 is a front view of a transformer with an air core reactor built therein according to an embodiment of the present invention;

fig. 2 is a side view of a transformer with an air core reactor built in according to an embodiment of the present invention;

fig. 3 is a schematic view of a lower fastening bolt of a transformer with an air-core reactor according to an embodiment of the utility model;

fig. 4 is a top view of a transformer with an air core reactor built in according to an embodiment of the present invention.

The reference numerals are as follows: 101. a reactor body; 102. a transformer body; 103. an air-core coil; 201. An upper clamp; 202. an upper compression member; 203. an upper beam; 204. fastening the screw rod; 205. connecting a threaded sleeve; 301. a lower clamp; 302. a lower support; 303. reinforcing ribs; 304. a fixing plate; 305. a lower fastening bolt; 3051. a spring washer; 3052. an insulating washer; 306. a foot pad; 307. a shock-absorbing rubber pad; 308. a shock-absorbing insulating pad; 401. a drawbar assembly; 4011. a central pull rod; 4012. side pull rods.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description, wherein the drawings are simplified schematic drawings and only the basic structure of the present invention is illustrated schematically, so that only the structure related to the present invention is shown, and it is to be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the utility model, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As shown in fig. 1-2 and 4, a transformer with an air core reactor built therein includes: the reactor comprises a reactor body 101, three air-core coils 103 in the reactor body 101, two upper clamping pieces 201 and upper pressing pieces 302 which are sequentially arranged on the air-core coils 103 from top to bottom, a lower supporting piece 302 and two lower clamping pieces 301 which are sequentially arranged below the air-core coils 103 from top to bottom, and a pull rod assembly 401 which penetrates through the reactor body 101 and fixedly connects the upper pressing pieces 302 and the lower supporting piece 302; the upper clip 201 is fixedly connected to the upper pressing member 302 by an upper fastening member, and the lower clip 301 is fixedly connected to the lower support member 302 by a lower fastening member.

Specifically, the upper clip 201 and the lower clip 301 are provided separately above and below the transformer body 102, the transformer body 102 is fixed between the upper clip 201 and the lower clip 301, and the reactor body 101 and the transformer body 102 are clamped in parallel between the upper clip 201 and the lower clip 301. The air-core coil 103 is formed into a rigid reactor body 101 by an upper hold-down member 302, a lower support member 302 and a tie bar assembly.

As shown in fig. 4, the tie rod set includes three central tie rods 4011 respectively disposed at the center positions of the three air-core coils 103 and four side tie rods 4012 uniformly disposed around the center air-core coil 103.

As shown in fig. 2, the upper fastening member includes an upper beam 203 disposed between two upper clip members 201, and an upper fastening screw 204, a bottom portion of each upper clip member 201 is fixedly connected to the upper fastening screw 204 by a connecting screw 205, and the upper fastening screw 204 passes through the upper pressing member 302 and is fixedly connected to the upper pressing member 302 by a fastening nut.

The clamping pieces 201 on the two sides are tightly connected through the upper beam 203 to form a rigid whole. The integral strength of the transformer during operation is ensured. The upper pressing piece 302 is tightly connected with the 4 connecting screw sleeves 205 welded on the upper clamping piece 201 through the upper fastening screw 204, so that the position deviation caused by inertia can be avoided in the transportation process.

With continued reference to fig. 2, the lower fastening member includes a reinforcing rib 303 for stabilizing the two lower clip members 301, and a fixing plate 304 disposed between the lower clip members 301 and the lower support member 302, and the fixing plate 304 and the lower support member 302 are fixedly connected by a lower fastening bolt 305. Referring to fig. 4, the lower fastening bolt 305 includes a spring washer 3051 and an insulating washer 3052 disposed between the head of the bolt and the fixing plate 304, and a spring washer 3051 disposed between the lower fastening assembly and the fixing nut.

Specifically, to increase the strength, the fixing plate 304 is reinforced by a plurality of ribs 303, so that the two side lower clamping members 301 form a rigid whole. In order to ensure the verticality of the reactor body 101, the fixing plate 304 must be horizontal when welding. Thus, the stability of the whole device is greatly improved.

As shown in fig. 1-2, a plurality of foot pads 306 are fixedly disposed under the lower clip 301. A shock-absorbing rubber pad 307 is laid between the foot pad 306 and the ground, and a shock-absorbing insulating pad 308 is arranged between the fixing plate 304 and the lower support 302. The reactor body 101 is integrally hung on the lower clamp piece 301 and is seated on the fixing plate 304 with the shock-absorbing insulating pad 308, and the reactor lower support 302 and the fixing plate 304 are screwed and fixed by 8 lower fastening bolts 305. The damping rubber pad 307 and the damping insulating pad 308 plus the pull rod effectively reduce the vibration of the reactor during operation, and ensure the stable operation of the whole device.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (6)

1. A transformer with an air core reactor built therein, comprising: the reactor comprises a reactor body, three hollow coils in the reactor body, two upper clamping pieces and upper pressing pieces which are sequentially arranged on the hollow coils from top to bottom, a lower supporting piece and two lower clamping pieces which are sequentially arranged on the lower surfaces of the hollow coils from top to bottom, and a pull rod assembly which penetrates through the reactor body and fixedly connects the upper pressing pieces and the lower supporting pieces; the upper clamping piece is fixedly connected with the upper pressing piece through an upper fastening piece, and the lower clamping piece is fixedly connected with the lower supporting piece through a lower fastening piece.

2. The transformer with the built-in air core reactor as set forth in claim 1, wherein: the upper fastening piece comprises an upper beam and an upper fastening screw rod which are arranged between two upper clamping pieces, the bottom of each upper clamping piece is fixedly connected to the upper fastening screw rod through a connecting threaded sleeve, and the upper fastening screw rod penetrates through the upper pressing piece and is fixedly connected with the upper pressing piece through a fastening nut.

3. The transformer with the built-in air core reactor as set forth in claim 1, wherein: the lower fastening piece comprises reinforcing ribs for stabilizing the two lower clamping pieces, and a fixing plate arranged between the lower clamping pieces and the lower supporting piece, the fixing plate is fixedly connected with the lower supporting piece through a lower fastening bolt, and the lower fastening bolt comprises a spring washer and an insulating washer which are arranged between the bolt head and the fixing plate, and a spring washer which is arranged between the lower fastening assembly and the fixing nut.

4. A transformer with an air core reactor built in according to claim 3, characterized in that: and a plurality of foot pads are fixedly arranged below the lower clamping piece.

5. The transformer with the built-in air-core reactor according to claim 4, characterized in that: a damping rubber pad is laid between the pad foot and the ground, and a damping insulating pad is arranged between the fixing plate and the lower supporting piece.

6. The transformer with the built-in air core reactor as set forth in claim 1, wherein: the pull rod group comprises three central pull rods which are respectively arranged at the central positions of the three hollow coils and four side pull rods which are uniformly distributed around the hollow coils in the middle.

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