Press-fitting and drying frame for impregnated transformer coil
By designing an impregnated transformer coil press-fit drying rack, the integration of coil shaping and drying processes is achieved, solving the problems of cumbersome tooling and silt paint liquid, and improving production efficiency and coil performance.
Patent Information
- Application Number
- CN202421637046.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-07-11
AI Technical Summary
In the prior art, the shaping and drying and curing processes of impregnated transformer coils are independent, resulting in scattered and diverse tooling equipment, complicated disassembly and assembly, the paint liquid accumulates after the coil is immersed in paint, and the recycling efficiency is low, which affects the coil heat dissipation performance and mechanical strength.
A impregnated transformer coil press-fit drying rack is designed, including a base bracket and press-fit assembly. The press-fit plate is equipped with a flow through hole and a long waist hole. The locking is adjusted by pulling the screw to achieve the integration of the shaping and drying of the coil, and is placed vertically to cure to avoid the accumulation of paint liquid.
The types and quantity of tooling equipment are simplified, production efficiency is improved, the recovery rate of impregnated paint is enhanced, the heat dissipation and mechanical properties of the coil are improved, and the cost is reduced.
Smart Images
Figure CN223245390U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drying racks, in particular to an impregnation-type transformer coil press-fitting drying rack. Background Art
[0002] Currently, after the impregnated transformer coil is wound, the two processes of size shaping and paint dipping and drying are carried out independently, each requiring a set of tooling. The connection between the processes requires repeated installation and disassembly of the tooling.
[0003] In the early stage, the production of tooling and equipment is large in number and costly, and storage takes up space and requires regular maintenance and cleaning; the production process is frequently disassembled and assembled, which is time-consuming and has low output; after the coil is dipped in paint, it is placed horizontally to dry and solidify, causing the side of the coil close to the bottom, where the paint is easily accumulated, reducing the recycling rate of the insulating paint and affecting the heat dissipation performance and mechanical strength of the coil. Utility Model Content
[0004] The purpose of the utility model is to provide an impregnated transformer coil press-fitting and drying rack, aiming to solve the problems in the prior art of the impregnated transformer coil press-fitting and shaping and drying and curing processes being independent, resulting in scattered and diverse tooling, repeated and cumbersome assembly and disassembly processes, accumulation of paint liquid during coil curing, and low recovery efficiency.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an impregnation transformer coil press-fitting and drying rack, comprising: a base bracket and a press-fitting assembly, wherein a plurality of press-fitting assemblies are arranged at intervals on the base bracket; each of the press-fitting assemblies comprises two oppositely arranged press-fitting plates and a pull screw, and the press-fitting plates are provided with a plurality of flow holes in a matrix form for the wetting and flow of the impregnating varnish during the coil impregnation and drying process; a plurality of open long waist holes are symmetrically provided on the press-fitting plates at the upper and lower ends of the long sides on both sides; a pull screw is arranged in the open long waist hole between the two oppositely arranged press-fitting plates, and the two ends of the pull screw are press-fitted, adjusted and locked with the open long waist hole through nuts.
[0006] Preferably, the base bracket includes two first channel steels parallel to each other and two second channel steels vertically connected between the two first channel steels; each second channel steel is connected to a corresponding bracket upright plate, and both ends of the bracket upright plate extend to the first channel steel; both ends of the bracket upright plate are provided with lifting holes.
[0007] Preferably, both side surfaces of the end portion of each bracket upright plate are connected to a plurality of triangular reinforcement plates, and the bottom of the triangular reinforcement plates is connected to the first channel steel.
[0008] Preferably, two groups of slots for mounting on the bracket plate are symmetrically provided on the two short sides of the press plate and located at the vertical center line of the third channel steel, and the front end of the slot is conical and the rear end is a rectangular slot with a depth greater than 100 mm.
[0009] Preferably, a pair of third channel steels are vertically spaced apart on one end surface of the press plate.
[0010] Preferably, a plurality of lifting round steels with a diameter of 20 mm are connected between the pair of third channel steels and flush with the upper end surface of the press plate.
[0011] Preferably, a plurality of triangular reinforcement plates are connected to one side surface of the third channel steel close to the long side of the press-fit plate, and the bottom of the triangular reinforcement plates is connected to the press-fit plate.
[0012] Preferably, counterweight iron blocks are provided in the channels of the first channel steel and the second channel steel.
[0013] Preferably, the spacing between the multiple long waist holes at the upper end or the lower end of the press plate is 120 mm, the depth of the long waist hole is 100 mm, and the angle with the long side of the press plate is 20°.
[0014] Preferably, the thickness of the triangular reinforcement plate is the same as the width of the slot.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] The press-fit drying rack designed by the utility model has a simple structure and is easy to operate. It avoids the cumbersome problems of the types and quantities of tools and apparatus required for the two processes of existing impregnated coil size shaping and drying and curing, avoids the waste of manpower and time during repeated disassembly and assembly, improves the recovery rate of the impregnating varnish, improves the heat dissipation effect and mechanical strength of the coil, greatly improves work efficiency and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of the utility model;
[0018] Figure 2 This is a schematic structural diagram of the press-fit plate of the utility model;
[0019] Figure 3 It is a structural diagram of the base bracket of the utility model;
[0020] In the figure: 1. Base bracket; 2. Press-fit plate; 3. Liquid flow hole; 4. Open long waist hole; 5. Pull screw; 6. Third channel steel; 7. Clamping slot; 8. Lifting round steel; 9. Triangular reinforcement plate; 10. First channel steel; 11. Second channel steel; 12. Bracket vertical plate; 13. Lifting hole. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0022] See also Figure 1-3 The utility model provides an impregnated transformer coil press-fitting and drying rack, comprising a base bracket 1 and a press-fitting assembly. A plurality of press-fitting assemblies are arranged on the spacer frame on the base bracket 1, which can simultaneously meet the tooling requirements of the two processes of impregnated coil size shaping and drying and curing.
[0023] In this solution, the base bracket 1 includes two first channel steels 10 parallel to each other and two second channel steels 11 vertically connected between the two first channel steels; each second channel steel 11 is correspondingly connected to a bracket upright plate 12, and both ends of the bracket upright plate 12 extend to the first channel steel 10; both ends of the bracket upright plate 12 are provided with lifting holes 13 to facilitate lifting the entire drying rack.
[0024] In this solution, in order to make the bracket upright plate more stable, two triangular reinforcement plates 9 are connected to both side surfaces of the end of each bracket upright plate 12, and the bottom of the triangular reinforcement plate 9 is connected to the first channel steel 10.
[0025] In this solution, in order to make the entire base support more stable, counterweight iron blocks can be provided in the grooves of the first channel steel 10 and the second channel steel 11.
[0026] In this solution, the press-fit assembly includes two opposing press-fit plates 2 and a pull screw 5. The press-fit plate 2 is provided with a plurality of liquid flow holes 3 in a matrix form, which facilitates the infiltration and flow of the impregnating varnish during the coil impregnation and drying process.
[0027] A plurality of open long waist holes 4 are symmetrically provided on the press-fitting plate 2 and located at the upper and lower ends of the long sides on both sides; a pull screw 5 is mounted in the open long waist holes 4 at the same height between the two opposite press-fitting plates 2, and the two ends of the pull screw 5 are press-fitted, adjusted and locked with the open long waist holes 4 through nuts.
[0028] In this solution, a pair of third channel steels 6 are vertically spaced apart on one end face of the press-fitting plate 2, thereby enhancing the stability of the press-fitting plate in the vertical direction; two groups of card slots 7 for mounting on the bracket vertical plate 12 are symmetrically provided on the two short sides of the press-fitting plate 2 and located at the vertical center position of the third channel steel 6, and the front end of the card slot 7 is conical and the rear end is a rectangular groove with a depth greater than 100 mm, thereby realizing the docking of the press-fitting assembly with the base bracket 1.
[0029] In this solution, a further improvement is made in that a plurality of lifting round steels 8 with a diameter of 20 mm are connected between a pair of third channel steels 6 and flush with the upper end surface of the press-fitting plate 2, so as to facilitate the lifting of the press-fitting assembly.
[0030] In this solution, in order to make the pressing plate and the third channel steel more stable relative to each other, a plurality of triangular reinforcing plates 9 are connected to one side of the third channel steel 6 close to the long side of the pressing plate 2, and the bottom of the triangular reinforcing plates 9 is connected to the pressing plate 2.
[0031] In this solution, the spacing between the three long waist holes 4 at the upper or lower end of the press-fit plate is 120 mm, the depth of the long waist hole 4 is 100 mm, and it forms an angle of 20° with the long side of the press-fit plate. In accordance with the specifications of the press-fit coil and the required fastening strength, a sufficient number of pull screws are installed.
[0032] In this solution, the thickness of the triangular reinforcement plate 9 is the same as the width of the slot 7 .
[0033] The working principle of the utility model is as follows: firstly, a pressing plate is laid on the work surface, and after the coil to be pressed is placed, another pressing plate is laid on the upper end surface of the coil, and the coil is shaped to the size required by the design by a press; the pressing plate is provided with long waist inclined holes reserved at the upper and lower ends, and the long waist inclined holes at appropriate positions are selected by oneself in combination with the size of the coil, and the coil is tightened by pulling the screw to avoid rebounding; after the entire pressing plate is dipped in paint, it is hoisted to the base bracket and fixed. 3 to 5 coils can be placed on one base bracket. The residual paint dripping from the air duct and gap of the coil is quickly recovered by utilizing the effect of gravity, and then transported to an oven for curing into a finished coil. The two processes are connected and coherent, which greatly reduces the working time and improves the production efficiency; and the impregnating paint can be effectively recovered to avoid waste, while the reliability and stability of the product performance are guaranteed.
[0034] The utility model tightens the coil by means of a screw, is suitable for shaping coils of various specifications and sizes, and simplifies the structure and quantity of pressing equipment; after the coil is dipped in paint, it can be placed vertically for curing, avoiding the defect of the dip paint accumulating on one side when the coil is placed horizontally, saving the consumption of dip paint and shortening the time required for drying and curing.
[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An impregnated transformer coil press-fit drying rack, characterized in that: include: A base bracket (1) and a press-fitting assembly, wherein a plurality of press-fitting assemblies are arranged at intervals on the base bracket (1); each of the press-fitting assemblies comprises two press-fitting plates (2) and a pull screw (5) arranged opposite to each other, and a plurality of flow holes (3) for the wetting and flow of the impregnating varnish during the coil impregnation and drying process are arranged in a matrix on the press-fitting plate (2); a plurality of open long waist holes (4) are symmetrically arranged on the press-fitting plate (2) and located at the upper and lower ends of the long sides on both sides; a pull screw (5) is arranged in the open long waist hole (4) between the two opposite press-fitting plates, and the two ends of the pull screw (5) are press-fitted, adjusted and locked with the open long waist hole (4) through nuts.
2. The impregnated transformer coil press-fit drying rack according to claim 1, characterized in that: The base support (1) comprises two mutually parallel first channel steels (10) and two second channel steels (11) vertically connected between the two first channel steels; each second channel steel (11) is correspondingly connected to a support upright plate (12), and both ends of the support upright plate (12) extend to the first channel steel (10); both ends of the support upright plate (12) are provided with lifting holes (13).
3. The impregnated transformer coil press-fit drying rack according to claim 2, characterized in that: Both side surfaces of the end of each bracket upright plate (12) are connected to a plurality of triangular reinforcement plates (9), and the bottom of the triangular reinforcement plate (9) is connected to the first channel steel (10).
4. The impregnated transformer coil press-fit drying rack according to claim 1, characterized in that: A pair of third channel steels (6) are vertically spaced apart on one end surface of the press plate (2).
5. The impregnated transformer coil press-fit drying rack according to claim 2, characterized in that: Two groups of slots (7) for mounting on the bracket upright (12) are symmetrically provided on the two short sides of the press plate (2) and located at the vertical center of the third channel steel (6), and the front end of the slot (7) is conical and the rear end is a rectangular slot with a depth greater than 100 mm.
6. The impregnated transformer coil press-fit drying rack according to claim 5, characterized in that: A plurality of lifting round steels (8) with a diameter of 20 mm are connected between the pair of third channel steels (6) and flush with the upper end surface of the press-fit plate (2).
7. The impregnated transformer coil press-fit drying rack according to claim 6, characterized in that: A plurality of triangular reinforcement plates (9) are connected to one side of the third channel steel (6) close to the long side of the press-fit plate (2), and the bottom of the triangular reinforcement plate (9) is connected to the press-fit plate (2).
8. The impregnated transformer coil press-fit drying rack according to claim 6, characterized in that: Counterweight iron blocks are provided in the grooves of the first channel steel (10) and the second channel steel (11).
9. The impregnated transformer coil press-fit drying rack according to claim 1, characterized in that: The spacing between the multiple long waist holes (4) at the upper end or the lower end of the press plate is 120 mm, the depth of the long waist hole (4) is 100 mm, and the angle with the long strip of the press plate is 20 degrees.
10. The impregnated transformer coil press-fit drying rack according to claim 7, characterized in that: The thickness of the triangular reinforcement plate (9) is the same as the width of the slot (7).