Oil-immersed transformer iron core

Abstract

The utility model relates to an oil-immersed transformer iron core, which belongs to the technical field of transformer iron cores, and comprises a plurality of groups of iron core patches, a plurality of fixed frame transverse steel plates, a thread locking pull rod and a mounting plate, the iron core patch comprises two groups of transverse patches which are distributed up and down, a middle vertical patch which is jointed with the two groups of transverse patches, and two groups of lateral vertical patches which are jointed with the end surfaces of the two sides of the two groups of transverse patches; each group of iron core patches is provided with two positioning locking holes which are symmetrically distributed, and the fixing frame transverse steel plate is provided with an adjusting locking assembly which is adjusted according to the positions of the positioning locking holes in the transverse patches, penetrates through the positioning locking holes and locks and fixes the transverse patches. According to the oil-immersed transformer iron core, the adjusting locking assembly and the moving locking structure can be conveniently adjusted according to the positions of the positioning locking holes in the iron core patches, the iron core patches are combined in a one-to-one correspondence mode under the positioning condition, and the patch mounting and assembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer core technical field, concretely is oil -immersed transformer core. BACKGROUND

[0002] Oil-immersed transformer core is an important component of transformer, mainly used for providing magnetic circuit to ensure the effective transmission of electric energy. The following are some key points about oil-immersed transformer core:

[0003] 1. Material

[0004] Silicon steel sheet: the core of oil-immersed transformer is usually stacked by silicon steel sheet, and the addition of silicon can improve the resistivity of the core and reduce eddy current loss, thereby improving the efficiency of the transformer.

[0005] Insulation treatment: the silicon steel sheet of the core is usually subjected to insulation treatment to reduce the current loss between the cores.

[0006] 2. Structure

[0007] Lamination structure: the core is composed of multiple laminations, which can effectively reduce eddy current loss, and there is an insulation layer between the laminations to prevent current from passing through.

[0008] Shape: the shape of the core is usually closed ring or E-shaped to form a complete magnetic circuit and reduce magnetic leakage.

[0009] 3. Function

[0010] Provide magnetic circuit: the main function of the core is to provide a low-resistance path for the magnetic flux of the transformer to effectively pass between the primary and secondary windings.

[0011] Improve efficiency: by reducing loss, the design and material selection of the core directly affect the efficiency and performance of the transformer.

[0012] From the above prior art, it can be seen that when the overall oil-immersed transformer core is assembled, the laminations need to be stacked and wrapped one by one, and then installed on the frame. The overall core patch is composed of multiple patch butt joints, so it is not convenient to precisely align and bond during bonding, and it is not convenient to efficiently assemble. Therefore, the present application designs an adjustable oil-immersed transformer core that improves assembly efficiency to solve this prior art defect. INVENTION CONTENTS

[0013] In view of the deficiencies of the prior art, the utility model provides an oil-immersed transformer core, which has the advantages of adjustable assembly efficiency improvement.

[0014] To achieve the above object, the utility model provides the following technical scheme: an oil immersed transformer core, including a plurality of groups of core patches, a plurality of fixed frame horizontal steel plates, threaded locking pull rods and mounting plates;

[0015] The core patch includes two groups of upper and lower horizontal patches, a middle vertical patch abutting two groups of the horizontal patches and two groups of lateral vertical patches abutting both sides of the end surface of the two groups of horizontal patches.

[0016] Two positioning locking holes symmetrically distributed are formed on each group of the core patch, and the fixed frame horizontal steel plate is provided with an adjusting locking assembly which is adjusted to pass through the positioning locking hole and lock and fix the horizontal patch according to the position of the positioning locking hole on the horizontal patch.

[0017] The fixed frame horizontal steel plate is further provided with a moving locking structure which is adjusted to pass through the positioning locking hole and lock and fix the middle vertical patch and the lateral vertical patch according to the position of the positioning locking hole on the middle vertical patch and the lateral vertical patch.

[0018] As a preferred technical scheme of the utility model, the number of the fixed frame horizontal steel plate is four, and the four fixed frame horizontal steel plates are attached to the upper side and the lower side of the front and back surfaces of the core patch.

[0019] Among them, the left and right sides of the fixed frame horizontal steel plate of the same side are passed through the threaded locking pull rod, the threaded locking pull rod is locked and fixed on the fixed frame horizontal steel plate through the fastening nut, and the mounting plate is installed between the bottom fixed frame horizontal steel plates.

[0020] As a preferred technical scheme of the utility model, the adjusting locking assembly includes an adjusting part and a locking part.

[0021] Among them, the adjusting part includes a connecting seat symmetrically distributed on the surface of the front fixed frame horizontal steel plate and an adjusting strip-shaped hole provided on the fixed frame horizontal steel plate, a bidirectional threaded rod is rotated between the connecting seats, and two threaded moving seats passing through the adjusting strip-shaped hole are threadedly connected on the bidirectional threaded rod.

[0022] As a preferred technical scheme of the utility model, the bidirectional threaded rod is provided with a threaded groove based on the middle two sides, and the two threaded grooves are threadedly connected with the two threaded moving seats.

[0023] As a preferred technical scheme of the utility model, the locking part includes a threaded fastening rod one installed on the threaded moving seat and passing through the adjusting strip-shaped hole and the positioning locking hole, and a locking nut one closely abutting with the rear fixed frame horizontal steel plate is threadedly connected on the threaded fastening rod one.

[0024] As a preferred technical scheme of the utility model, the mobile locking structure comprises a mobile piece and a fastener;

[0025] The mobile piece comprises a sliding groove opened on the opposite surface of the fixed frame horizontal steel plate, and three locking plates are slidably connected in the sliding groove.

[0026] As a preferred technical scheme of the utility model, the fastener comprises a threaded fastening rod two penetrating the adjusting hole and the positioning locking hole, and both ends of the threaded fastening rod two are threadedly connected with locking nuts two respectively adhering to the surface of the fixed frame horizontal steel plate on the front and back sides.

[0027] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

[0028] The oil-immersed transformer core is convenient for adjusting the locking assembly and the mobile locking structure according to the position of the upper positioning locking hole of the core patch, and realizes the one-to-one corresponding patch combination of the core patches under the condition of positioning, thereby improving the efficiency of patching and assembling. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 It is a perspective view of the utility model;

[0030] Fig. 2 It is a side view perspective view of the utility model;

[0031] Fig. 3 It is a rear view perspective view of the utility model;

[0032] Fig. 4 It is a deflection perspective view of the utility model.

[0033] In the drawing: 1, core patch; 101, horizontal patch; 102, middle vertical patch; 103, lateral vertical patch; 2, fixed frame horizontal steel plate; 3, adjusting strip-shaped hole; 4, threaded fastening rod one; 5, locking nut one; 6, connecting seat; 7, bidirectional threaded rod; 8, threaded mobile seat; 9, threaded locking pull rod; 10, sliding groove; 11, locking plate; 12, adjusting hole; 13, threaded fastening rod two; 14, locking nut two; 15, mounting plate. DETAILED DESCRIPTION

[0034] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a 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.

[0035] Referring to Figs. 1 to 4 The oil-immersed transformer core in the embodiment comprises a plurality of groups of core patches 1, a plurality of fixed frame horizontal steel plates 2, threaded locking pull rods 9 and mounting plates 15.

[0036] The core patch 1 comprises two groups of upper and lower horizontal patches 101, a middle vertical patch 102 abutting the two groups of horizontal patches 101, and two groups of lateral vertical patches 103 abutting the two sides of the end surface of the two groups of horizontal patches 101.

[0037] The number of the fixed frame horizontal steel plates 2 is four, and the four fixed frame horizontal steel plates 2 are attached to the upper side and the lower side of the front and back surfaces of the core patch 1.

[0038] Among them, the left and right sides of the same side fixed frame horizontal steel plate 2 are threaded through the threaded locking pull rod 9, the threaded locking pull rod 9 is locked and fixed on the fixed frame horizontal steel plate 2 through the fastening nut, the bottom fixed frame horizontal steel plate 2 is provided with a mounting plate 15, and the mounting plate 15 is fastened through the fastening screw thread and the matching nut thread to realize the mounting and fixing of the mounting plate 15 and the fixed frame horizontal steel plate 2.

[0039] In the embodiment, two positioning and locking holes symmetrically distributed are arranged on each group of core patches 1, and an adjusting and locking assembly is arranged on the fixed frame horizontal steel plate 2, which passes through the positioning and locking hole according to the position of the positioning and locking hole on the horizontal patch 101 and locks the horizontal patch 101.

[0040] It should be noted that the adjusting and locking assembly comprises an adjusting member and a locking member.

[0041] Among them, the adjusting member comprises a connecting seat 6 integrally connected to the left and right symmetrically distributed surfaces of the front side fixed frame horizontal steel plate 2 and an adjusting strip-shaped hole 3 arranged in the middle of the fixed frame horizontal steel plate 2, a bidirectional threaded rod 7 is circumferentially rotated between the connecting seats 6, one end of the bidirectional threaded rod 7 is provided with a rotating head, and the outside is provided with a resistance increasing groove, which is convenient for hand rotating, and the number of two threaded moving seats 8 passing through the adjusting strip-shaped hole 3 is threadedly connected on the bidirectional threaded rod 7.

[0042] The bidirectional threaded rod 7 is provided with a threaded groove on the middle of the two sides, and the two threaded grooves are threadedly connected with the two threaded moving seats 8.

[0043] The locking member comprises a threaded fastening rod one 4 mounted and fixed on the threaded moving seat 8, which passes through the adjusting strip-shaped hole 3 and the positioning and locking hole, and the positioning and locking hole is arranged on the horizontal patch 101, and a locking nut one 5 closely abutting the rear side fixed frame horizontal steel plate 2 is threadedly connected on the threaded fastening rod one 4.

[0044] The fixed frame horizontal steel plate 2 in the embodiment is further provided with a moving locking structure which passes through the positioning locking holes and locks the middle vertical patch 102 and the lateral vertical patch 103 according to the position of the positioning locking holes on the middle vertical patch 102 and the lateral vertical patch 103.

[0045] It should be noted that the moving locking structure comprises a moving piece and a fastener.

[0046] The moving piece comprises a sliding groove 10 which is opened on the opposite surface of the fixed frame horizontal steel plate 2, and three locking plates 11 which are slidingly connected in the sliding groove 10, and an adjusting hole 12 which is opened on the locking plate 11.

[0047] The fastener comprises a threaded fastening rod two 13 which passes through the adjusting hole 12 and the positioning locking hole, wherein the threaded fastening rod two 13 on both sides passes through the positioning locking hole on the lateral vertical patch 103 on both sides, the threaded fastening rod two 13 in the middle passes through the positioning locking hole on the middle vertical patch 102, and both ends of the threaded fastening rod two 13 are threadedly connected with locking nuts two 14 which are respectively attached to the surface of the front and rear fixed frame horizontal steel plates 2.

[0048] The working principle of the above embodiment is as follows:

[0049] In use, first, according to the position of the positioning locking hole on the horizontal patch 101, the adjusting two-way threaded rod 7 is adjusted to rotate on the connecting seat 6, and through the threaded connection between the screw moving seat 8 and the forward and reverse threaded grooves on the two-way threaded rod 7, and the straight line limiting sliding of the strip-shaped hole 3 on the screw moving seat 8, when the two-way threaded rod 7 rotates, the two screw moving seats 8 and the threaded fastening rod one 4 on the screw moving seat 8 are synchronously moved, so that the threaded fastening rod one 4 is located one-to-one corresponding to the position of the positioning locking hole on the horizontal patch 101.

[0050] After the corresponding is completed, first, the front fixed frame horizontal steel plate 2 is placed horizontally on the ground, and the threaded fastening rod one 4 is ensured to be horizontally upward, then the positioning locking hole on the horizontal patch 101 is passed through the threaded fastening rod one 4 to be attached, and the corresponding is completed.

[0051] After the transverse patch 101 patch superposition is completed, according to the position of the positioning locking hole on the middle vertical patch 102 and the lateral vertical patch 103, adjust each locking plate 11 in the sliding groove 10 while synchronously adjusting the threaded fastening rod two 13 in the adjusting hole 12, so that the threaded fastening rod two 13 corresponds to the position of the positioning locking hole on the middle vertical patch 102 and the lateral vertical patch 103, then the positioning locking hole on the middle vertical patch 102 and the lateral vertical patch 103 is inserted into the corresponding threaded fastening rod two 13 for patching, so that the transverse patch 101, the middle vertical patch 102 and the lateral vertical patch 103 are one by one patched, superimposed and connected after the adjustment and positioning are completed;

[0052] After the overall patching is completed, the adjusting strip hole 3 and the adjusting hole 12 on the rear side fixing frame horizontal steel plate 2 are respectively threaded through the corresponding threaded fastening rod one 4 and the threaded fastening rod two 13, and the locking nut one 5 and the locking nut two 14 are fastened to realize the locking and fixing of the overall patching;

[0053] Finally, the threaded locking pull rod 9 is threaded through the fixing frame horizontal steel plate 2 for locking and fixing, which realizes the assembly of the overall iron core structure and greatly improves the assembly efficiency.

Claims

1. An oil-immersed transformer core, comprising several sets of core patches (1), several fixing frame horizontal steel plates (2), threaded locking rods (9), and mounting plates (15). The core patch (1) includes two sets of horizontal patches (101) distributed vertically, a vertical patch (102) in the middle of the two sets of horizontal patches (101) and two sets of lateral vertical patches (103) attached to the two side end faces of the two sets of horizontal patches (101). Its features are: Each set of iron core patches (1) has two symmetrically distributed positioning locking holes. The horizontal steel plate (2) of the fixing frame is provided with an adjustment locking component that adjusts the horizontal patch (101) according to the position of the positioning locking holes on the horizontal patch (101), passes through the positioning locking holes, and locks the horizontal patch (101). The fixed frame horizontal steel plate (2) is also provided with a movable locking structure that adjusts the position of the positioning locking hole on the central vertical patch (102) and the lateral vertical patch (103) to pass through the positioning locking hole and lock the central vertical patch (102) and the lateral vertical patch (103) in a fixed manner.

2. The oil-immersed transformer core according to claim 1, characterized in that: The number of the fixed frame horizontal steel plates (2) is four, and the four fixed frame horizontal steel plates (2) are attached to the upper and lower sides of the front and rear surfaces of the iron core patch (1); Among them, a threaded locking rod (9) passes between the left and right sides of the horizontal steel plate (2) of the fixed frame on the same side. The threaded locking rod (9) is locked and fixed on the horizontal steel plate (2) of the fixed frame by a fastening nut. An installation plate (15) is installed between the horizontal steel plates (2) of the fixed frame at the bottom.

3. The oil-immersed transformer core according to claim 1, characterized in that: The adjusting locking assembly includes an adjusting element and a locking element; The adjusting component includes connecting seats (6) symmetrically distributed on the left and right sides of the front fixed frame horizontal steel plate (2) and adjusting strip holes (3) provided on the fixed frame horizontal steel plate (2). A bidirectional threaded rod (7) is rotatably connected between the connecting seats (6), and two threaded moving seats (8) passing through the adjusting strip holes (3) are threadedly connected to the bidirectional threaded rod (7).

4. The oil-immersed transformer core according to claim 3, characterized in that: The bidirectional threaded rod (7) has threaded grooves on both sides of the middle section with opposite directions. The two threaded grooves with opposite directions are respectively threaded to the two threaded moving seats (8).

5. The oil-immersed transformer core according to claim 3, characterized in that: The locking component includes a threaded fastening rod (4) installed on the threaded moving seat (8) and passing through the adjusting strip hole (3) and the positioning locking hole. A locking nut (5) is threadedly connected to the threaded fastening rod (4) and closely fits the horizontal steel plate (2) of the rear fixing frame.

6. The oil-immersed transformer core according to claim 5, characterized in that: The movable locking structure includes a movable component and a fastener; The movable component includes a slide groove (10) opened on the opposite side of the horizontal steel plate (2) of the fixed frame. Three locking plates (11) are slidably connected in the slide groove (10). The locking plates (11) are provided with adjustment holes (12).

7. The oil-immersed transformer core according to claim 5, characterized in that: The fastener includes a threaded fastening rod 2 (13) that passes through the adjustment hole (12) and the positioning locking hole. Both ends of the threaded fastening rod 2 (13) are threadedly connected to locking nuts 2 (14) that respectively fit against the surfaces of the front and rear fixed frame horizontal steel plates (2).

Images