Oil-immersed transformer iron core with oval section

Abstract

The utility model relates to the technical field of transformers, and provides an oil-immersed transformer iron core with an oval section, which comprises an iron core main body and at least one group of clamping components, each clamping component comprises two clamping elements which are horizontally arranged at intervals, and two ends of each clamping component are respectively provided with a locking element. The locking element is used for oppositely locking the two clamping elements of the same clamping assembly in the thickness direction of the iron core body so that the clamping assembly can be clamped on the two sides of the iron core body in the thickness direction, each clamping element comprises an adjusting screw and two movable clamping pieces consistent in length direction, one face of each movable clamping piece faces the iron core body, and the other face of each movable clamping piece faces the iron core body. An adjusting pipe is arranged on the other face of the movable clamping piece in the length direction of the movable clamping piece, the two ends of the adjusting pipe are through, internal threads are formed in the pipe length direction, and external threads connected with the internal threads are formed in the adjusting screw rod in the rod length direction. The utility model aims to provide an oil-immersed transformer iron core which can meet the installation of iron core main bodies with different sizes.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, concretely relates to an oil -immersed transformer core of oval section. BACKGROUND

[0002] The transformer core is the main magnetic circuit part in the transformer, is formed by the cold-rolled silicon steel sheet of a plurality of successive stacking and installs the main body of the core to the corresponding mounting frame and assembles, the existing transformer core is often composed of the main body of the core and the steady frame clamped in the thickness direction (the direction of the silicon steel sheet stack of the main body of the core) two sides, the existing mounting frame cannot adjust the size, is difficult to meet the installation of the main body of the core of different sizes, in order to clamp the main body of the core of different sizes, need to select the mounting frame matched with the size of the main body of the core to carry out the installation of the core, and the practicality is poor. Therefore, it is necessary to put forward an oil -immersed transformer core capable of meeting the installation of the main body of the core of different sizes. SUMMARY

[0003] The utility model discloses a kind of oil -immersed transformer cores capable of meeting the installation of the main body of the core of different sizes.

[0004] To achieve the above object, the utility model provides an oil -immersed transformer core of oval section, including core main body and at least one group of clamping components, the clamping component includes two clamping elements arranged horizontally and spaced, locking element is arranged at the both ends of the clamping component respectively, the locking element is used to lock the two clamping elements of the same clamping component along the thickness direction of the core main body, so that the clamping component is clamped on the both sides of the thickness direction of the core main body, the clamping element includes adjusting screw rod and two length direction consistent movable clamping pieces, one side of the movable clamping piece is used to face the core main body, the other side of the movable clamping piece is provided with adjusting pipe along the length direction of the movable clamping piece, the adjusting pipe is through and is formed with internal thread along the length direction of pipe, the adjusting screw rod is formed with external thread screw connection with the internal thread along the length direction of rod.

[0005] Preferably, the clamping component is provided with two groups, wherein the clamping element of one group of the clamping component is used to clamp on the both sides of the thickness direction of the upper part of the core main body, and the clamping element of another group of the clamping component is used to clamp on the both sides of the thickness direction of the lower part of the core main body.

[0006] Preferably, the movable clamping part of the clamping element clamped on the upper part of the core body is provided with a connecting pipe in the height direction of the core body, the connecting pipe is internally formed with a connecting thread in the length direction of the pipe, the movable clamping part of the clamping element clamped on the lower part of the core body is formed with a first through hole in the height direction of the core body, the first through hole is used for the screw rod of the adjusting bolt to pass through, the threaded section of the adjusting bolt is used for cooperating with the connecting thread to adjust the length of the threaded section passing through the connecting pipe, so as to adjust the spacing between the clamping element clamped on the upper part of the core body and the clamping element clamped on the lower part of the core body.

[0007] Preferably, the locking element includes a locking bolt and a locking nut, the two ends of the clamping element are respectively formed with a second through hole in the thickness direction of the core body, the through holes of the clamping elements of the same clamping assembly are correspondingly arranged to pass through the second through holes of the same end of the two clamping assemblies, the locking nut is used for cooperating with the locking bolt to lock the two clamping elements of the clamping assembly in the thickness direction of the core body.

[0008] Preferably, the oil-immersed transformer core with an oval cross section further includes a base, the base includes two support elements, the support elements are arranged vertically with the clamping elements, one end of one of the support elements is connected with one end of the clamping element clamped on the lower part of the transformer core, and the other end of the other support element is connected with the other end of the clamping element clamped on the lower part of the transformer core.

[0009] Preferably, the bottom surface of the support element is used to face the ground, the two ends of the top surface of the support element in the length direction are respectively provided with a buffer cylinder in the height direction of the core body, the buffer cylinder is open at the top end, the bottom surface of the clamping element clamped on the lower part of the core body is provided with a movable column in the height direction of the core body, the movable column is movably arranged in the buffer cylinder, and a buffer spring is arranged in the buffer cylinder in the height direction of the core body to elastically support the movable column.

[0010] Preferably, the movable clamping part is a channel steel, the two clamping elements of the same clamping assembly are arranged with their grooves facing away from each other, and the adjusting pipe is arranged in the corresponding groove of the movable clamping part.

[0011] Preferably, the iron core body comprises two iron yokes arranged in parallel and at intervals, the cross-sectional shape of each of the two iron yokes is oval, two iron core edge columns are arranged between the two iron yokes, the iron core edge columns are arranged perpendicularly to the iron yokes, one end of each of the two iron core edge columns is fixedly connected to two ends of one of the iron yokes, the other end of each of the two iron core edge columns is fixedly connected to two ends of the other iron yoke, and the cross-sectional shape of the connection between the iron yoke and the iron core edge column is oval.

[0012] Preferably, an iron core middle column is arranged between the two iron core edge columns, and two ends of the iron core middle column are fixedly connected to two ends of each of the two iron yokes.

[0013] Preferably, the top surface of the clamping element for clamping the upper part of the iron core body is provided with lifting rings at both ends in the length direction.

[0014] In the technical scheme of the utility model, when assembling the oil-immersed transformer iron core with an oval cross-section, two movable clamping pieces of the clamping element are symmetrically connected to both ends of the adjusting screw to form a clamping element, the clamping elements of each clamping assembly are clamped on both sides in the thickness direction of the iron core body, and then the two clamping elements of the same clamping assembly are locked in the thickness direction of the iron core body by the locking element, so that the assembly is completed.

[0015] Since the adjusting pipe is through at both ends and has an internal thread formed along the length direction of the pipe, the adjusting screw has an external thread formed along the length direction of the screw and threadedly connected with the internal thread, and the movable clamping piece can move along the length direction of the adjusting screw, the length of the clamping element is adjusted, and the length of the clamping assembly is adjusted, so that the iron core body of different sizes can be installed. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0017] Fig. 1 It is a three-dimensional structural schematic view of an embodiment of the utility model oval cross-section oil-immersed transformer iron core.

[0018] Fig. 2 It is a front view of the oval cross-section oil-immersed transformer iron core.

[0019] Fig. 3 It is a side view of the oval cross-section oil-immersed transformer iron core.

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] 1-Clamping element; 11-Movable clamping piece; 12-Adjusting screw; 13-Adjusting tube; 2-Connecting tube; 3-Adjusting bolt; 4-Locking element; 5-Base; 51-Supporting element; 52-Cushion cylinder; 6-Movable column.

[0022] The purposes, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0025] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0026] In the utility model, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0027] In addition, the technical solutions of various embodiments of the utility model can be combined with each other, but must be based on the realization of the ordinary skill in the art, when the combination of technical solutions appears mutual contradiction or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

[0028] The utility model provides an oval section oil -immersed transformer core.

[0029] Please refer to Figs. 1 to 3 The oval section oil -immersed transformer core, including the core main part and at least one group of clamping components, the clamping component includes two horizontal interval arrangement's clamping element 1, the clamping component both ends are provided with locking element 4 respectively, locking element 4 is used for the two clamping element 1 of same clamping component is locked along the thickness direction of core main part towards, so that the clamping component clamps in the two sides of the thickness direction of core main part, the clamping element 1 includes adjusting screw rod 12 and two length direction consistent movable clamping piece 11, movable clamping piece 11 one side is used for towards core main part, the other side of movable clamping piece 11 is provided with adjusting tube 13 along the length direction of movable clamping piece 11, and the both ends of adjusting tube 13 are through and are formed with internal thread along the length direction of pipe, and adjusting screw rod 12 is formed with external thread along the length direction of rod and is connected with the internal thread of adjusting tube 13. In the embodiment, the length of adjusting tube 13 is consistent with the length of movable clamping piece 11, and the length of adjusting screw rod 12 is 2 times the length of adjusting tube 13.

[0030] In the technical scheme of the utility model, when assembling the oval section oil -immersed transformer core, the two movable clamping pieces 11 of the clamping element 1 are symmetrically connected to the both ends of the adjusting screw rod 12 to assemble the clamping element 1, the clamping elements 1 of each group of clamping components are clamped on the both sides of the thickness direction of the core main body, and then the two clamping elements 1 of the same clamping component are locked along the thickness direction of the core main body by the locking element 4, so that the assembly is completed.

[0031] Because the both ends of the adjusting tube 13 are through and are formed with internal thread along the length direction of pipe, and the adjusting screw rod 12 is formed with external thread along the length direction of rod and is connected with the internal thread, the movable clamping piece 11 can be moved along the length direction of the adjusting screw rod 12, the length of the clamping element 1 is adjusted, and the length of the clamping component is adjusted to meet the installation of the core main body of different sizes.

[0032] Preferably, the clamping assembly is provided with two groups, wherein one group of the clamping elements 1 of the clamping assembly is used to clamp on both sides of the upper part of the core body, and the other group of the clamping elements 1 of the clamping assembly is used to clamp on both sides of the lower part of the core body. The two groups of clamping assemblies are provided to jointly clamp the core body from the upper and lower parts of the core body, and the clamping is more firm.

[0033] Preferably, the movable clamping piece 11 of the clamping element 1 clamped on the upper part of the core body is provided with a connecting pipe 2 in the height direction of the core body, and the connecting pipe 2 is internally formed with a connecting thread in the length direction of the pipe. The movable clamping piece 11 of the clamping element 1 clamped on the lower part of the core body is formed with a first through hole in the height direction of the core body, and the first through hole is used for the screw rod of an adjusting bolt 3 to pass through. The threaded section of the adjusting bolt 3 is used to cooperate with the connecting thread to adjust the length of the threaded section passing through the connecting pipe 2, so as to adjust the spacing between the clamping element 1 clamped on the upper part of the core body and the clamping element 1 clamped on the lower part of the core body. The connecting pipe 2 is provided to cooperate with the adjusting bolt 3, and the threaded section of the adjusting bolt 3 is used to cooperate with the connecting thread to adjust the length of the threaded section passing through the connecting pipe 2, so as to adjust the spacing between the clamping element 1 clamped on the upper part of the core body and the clamping element 1 clamped on the lower part of the core body, which can adapt to the installation of the core body with different height sizes.

[0034] Preferably, the locking element 4 includes a locking bolt and a locking nut. The two ends of the clamping element 1 are respectively formed with a second through hole in the thickness direction of the core body. The through holes of the clamping elements 1 of the same clamping assembly are provided one by one to allow the locking bolt to pass through the second through holes of the same end of the two clamping assemblies. The locking nut is used to cooperate with the locking bolt to lock the two clamping elements 1 of the clamping assembly in the thickness direction of the core body. In this embodiment, the same end of the same clamping assembly is provided with two locking elements 4, and the same movable clamping piece 11 is sequentially provided with two second through holes in the height direction of the core body.

[0035] Preferably, the oil-immersed transformer core with an elliptical cross section further includes a base 5, and the base 5 includes two support elements 51 which are arranged perpendicularly to the clamping elements 1. One end of one of the support elements 51 is connected to one end of the clamping element 1 clamped on the lower part of the transformer core, and the other end of the other support element 51 is connected to the other end of the clamping element 1 clamped on the lower part of the transformer core. The base 5 is provided to support the core body. In this embodiment, the support element 51 is a channel steel, and the channel of the support element 51 is used to face the ground.

[0036] Preferably, the bottom surface of the support element 51 is used to face the ground, and the two ends of the length direction of the top surface of the support element 51 are respectively provided with a buffer cylinder 52 along the height direction of the core body, and the buffer cylinder 52 is open at the top end and is used to clamp the bottom surface of the clamping element 1 at the lower part of the core body. The bottom surface of the clamping element 1 is provided with a movable column 6 along the height direction of the core body, the movable column 6 is movably arranged in the buffer cylinder 52, and a buffer spring is arranged in the buffer cylinder 52 along the height direction of the core body to elastically support the movable column 6. The buffer spring is arranged to elastically support the movable column 6, so as to buffer the vibration generated during the installation and operation of the core body; in the embodiment, the buffer cylinder 52 is a cylinder, the movable column 6 is a cylinder, and the buffer cylinder 52, the movable column 6 and the buffer spring are concentrically arranged.

[0037] Preferably, the movable clamping piece 11 is a channel steel, and the two clamping elements 1 of the same group of clamping assemblies are oppositely arranged with slots, and the adjusting pipe 13 is arranged in the corresponding slot of the movable clamping piece 11. In the embodiment, the adjusting pipe 13 is arranged in the middle of the corresponding movable clamping piece 11, one of the second through holes of the movable clamping piece 11 is arranged above the corresponding adjusting pipe 13, and the other second through hole of the movable clamping piece 11 is arranged below the corresponding adjusting pipe 13.

[0038] Preferably, the core body comprises two iron yokes arranged in parallel and spaced apart, the cross-sectional shape of each of the two iron yokes is oval, two core edge columns are arranged between the two iron yokes, the core edge columns are arranged perpendicularly to the iron yokes, one end of each of the two core edge columns is fixedly connected to two ends of one of the iron yokes, and the other end of each of the two core edge columns is fixedly connected to two ends of the other iron yoke. The cross-sectional shape of the connection between the iron yoke and the core edge column is oval. In the embodiment, the two ends of the iron yoke and the two ends of the core edge column are provided with inclined ends, and the two iron yokes and the two core edge columns are fixedly connected through the inclined ends to form a rectangular frame.

[0039] Preferably, an iron core middle column is arranged between the two core edge columns, and the two ends of the iron core middle column are fixedly connected to the two ends of the two iron yokes, respectively. In the embodiment, the iron yoke, the core edge column and the iron core middle column are all composed of a plurality of silicon steel sheets stacked in the thickness direction of the core body.

[0040] Preferably, the top surface of the clamping element 1 for clamping the upper part of the core body is provided with lifting rings at both ends of the length direction of the top surface. The lifting rings are provided to facilitate the operator to hoist the oil-immersed transformer core with an elliptical cross section into the transformer tank after the assembly of the oil-immersed transformer core with an elliptical cross section is completed.

[0041] The above are only preferred embodiments of the present application, and do not limit the patent range of the present application, and any equivalent structural transformation made under the concept of the present application, or direct / indirect application in other related technical fields using the content of the present application specification and drawings are included in the patent protection range of the present application.

Claims

1. An oil-immersed transformer core of an elliptical cross section, characterized by, The iron core body and at least one set of clamping assemblies are provided, the clamping assembly includes two horizontally spaced clamping elements, and locking elements are arranged at the two ends of the clamping assembly respectively, the locking elements are used for locking the two clamping elements of the same clamping assembly towards each other along the thickness direction of the iron core body, so that the clamping assembly is clamped on both sides of the iron core body in the thickness direction, the clamping element includes an adjusting screw and two length-consistent movable clamping pieces, one side of the movable clamping piece is used for facing the iron core body, and the other side of the movable clamping piece is provided with an adjusting pipe along the length direction of the movable clamping piece, the adjusting pipe is through at both ends and is formed with internal threads along the length direction of the pipe, and the adjusting screw is formed with external threads which are threadedly connected with the internal threads along the length direction of the rod. The clamping assembly is provided with two sets, one set of the clamping assembly is used for clamping on both sides of the upper part of the iron core body in the thickness direction, and the other set of the clamping assembly is used for clamping on both sides of the lower part of the iron core body in the thickness direction. The movable clamping piece of the clamping element clamped on the upper part of the iron core body is provided with a connecting pipe along the height direction of the iron core body, the connecting pipe is formed with connecting threads inside along the length direction of the pipe, the movable clamping piece of the clamping element clamped on the lower part of the iron core body is formed with a first through hole along the height direction of the iron core body, the first through hole is used for the screw rod of an adjusting bolt to pass through, the threaded section of the adjusting bolt is used for cooperating with the connecting threads, so as to adjust the length of the threaded section arranged in the connecting pipe, so as to adjust the spacing between the clamping element clamped on the upper part of the iron core body and the clamping element clamped on the lower part of the iron core body.

2. The oil-immersed transformer core of oval cross section according to claim 1, characterized in that, The locking element includes a locking bolt and a locking nut, the two ends of the clamping element are respectively formed with a second through hole along the thickness direction of the iron core body, the through holes of the clamping elements of the same clamping assembly are arranged one by one, so that the locking bolt passes through the second through holes of the same end of the two clamping assemblies, and the locking nut is used for cooperating with the locking bolt to lock the two clamping elements of the clamping assembly towards each other along the thickness direction of the iron core body.

3. The oil-immersed transformer core of oval cross section according to claim 1, characterized in that, A base is further included, the base includes two support elements which are arranged perpendicularly to the clamping elements, one end of one of the support elements is connected with one end of the clamping element clamped on the lower part of the transformer iron core, and the other end of the support element is connected with the other end of the clamping element clamped on the lower part of the transformer iron core.

4. The oil-immersed transformer core of oval cross section according to claim 3, characterized in that, The bottom surface of the support element is used to face the ground, and the two ends of the top surface of the support element in the length direction are respectively provided with a buffer cylinder along the height direction of the iron core body, and the buffer cylinder is open at the top end and is used to clamp the bottom surface of the clamping element at the lower part of the iron core body.

5. The oil-immersed transformer core of oval cross section according to claim 1, characterized in that, The movable clamping piece is a channel steel, and the two clamping elements of the same group of clamping assemblies are oppositely provided with grooves.

6. The oil-immersed transformer core of oval cross section according to claim 1, characterized in that, The iron core body includes two iron yokes arranged in parallel and at intervals, and the cross-sectional shape of each of the two iron yokes is oval. Two iron core edge columns are arranged between the two iron yokes, and the iron core edge columns are arranged perpendicularly to the iron yokes. One end of each of the two iron core edge columns is fixedly connected to two ends of one of the iron yokes, and the other end of each of the two iron core edge columns is fixedly connected to two ends of the other iron yoke. The cross-sectional shape of the connection between the iron yoke and the iron core edge column is oval.

7. The oil-immersed transformer core of oval cross-section according to claim 6, characterized in that, An iron core middle column is arranged between the two iron core edge columns, and the two ends of the iron core middle column are fixedly connected to the two ends of the two iron yokes.

8. The oil-immersed transformer core of oval cross section according to any one of claims 1 to 7, characterized in that, The two ends of the top surface of the clamping element for clamping the upper part of the iron core body are respectively provided with lifting rings.

Images