Transformer coil performance detection device
By designing a coil performance detection device for transformers, the problem of difficulty in detecting coil defects before assembly is solved, and defective coils are discovered and eliminated before assembly, improving production efficiency and product quality.
Patent Information
- Application Number
- CN202420934698.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The prior art is difficult to detect defects or failures of the coil before assembly of the transformer, resulting in reworking of defects after assembly, wasting time and increasing costs.
A transformer coil performance detection device is designed, including a core with a stack of highly magnetic silicon steel sheets, a removable upper iron yoke, clamps and foot, allowing the coil to be fitted on a temporary core for inspection before formal assembly.
Through this device, problems such as errors in the number of turns or short circuits between turns can be found in the coil before formal assembly, avoiding rework, improving production efficiency, saving costs and ensuring product quality.
Smart Images
Figure CN222671929U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of a preventive performance detection device for a transformer before formal assembly, in particular to a transformer coil performance detection device. Background Art
[0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are primary coil, secondary coil and iron core (magnetic core). Its main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. It is widely used in various industries. Most transformers use iron core as the skeleton, and the primary coil and secondary coil are coaxially mounted on the core column of the iron core. According to the requirements of different transformer performance, the iron core has two columns, three columns, five columns, etc., and each core column can be mounted with a set of primary coil and secondary coil.
[0003] The assembly of the transformer is a complicated and time-consuming task. First, pull out the upper iron yoke of the stacked iron core, put the primary coil and the secondary coil on the core column, and then insert the pulled out upper iron yoke back piece by piece as it was. It is best to install the clamps that fix the iron core and the coil. Once the transformer has coil quality problems after the assembly, such as excessive transformation ratio, short circuit of the internal wire of the coil, unbalanced phase resistance, etc., it is necessary to repeat the transformer assembly process and replace the problematic coil. This not only wastes working hours and increases manufacturing costs, but the iron yoke on the iron core will also be damaged during the process of pulling out and stacking, resulting in performance problems such as increased no-load loss of the transformer, increased noise, and excessively high operating temperature. Utility Model Content
[0004] The purpose of the utility model is to provide a transformer coil performance detection device, which can detect whether the coil is defective or faulty without going through the complicated assembly process of the transformer, and can eliminate defective coils existing in production in advance, avoid rework after general assembly to delay production, and reduce cost losses in manufacturing.
[0005] In order to solve the above technical problems, the utility model provides a transformer coil performance detection device, comprising a group of iron cores formed by stacking high magnetic permeability silicon steel sheets;
[0006] An upper iron yoke is detachably mounted above the iron core and movably connected to the iron core;
[0007] A lower iron yoke is provided below the iron core and is fixedly connected to the iron core by a clamp;
[0008] A foot is installed under the clamp to stabilize the iron core.
[0009] Preferably, the iron core is a double-column iron core, and a certain distance is left between the two columns for sleeve connection of the primary coil and the secondary coil.
[0010] Preferably, the upper iron yoke is an integral structure, and can be hoisted and moved as a whole through the lifting ears on the upper iron yoke.
[0011] Preferably, the lifting ears are provided in multiple groups and are evenly distributed on the upper iron yoke.
[0012] Preferably, the base feet are provided in two groups and are symmetrically arranged on both sides of the bottom of the detection device.
[0013] Preferably, the base is arranged perpendicular to the clamp.
[0014] Preferably, an insulating support pad is arranged on the clamp to provide insulating support for the primary coil and the secondary coil.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] By adopting the transformer coil performance detection device of the utility model, the coil to be assembled can be put on this temporary iron core before the formal assembly. After the iron yoke is closed, it is equivalent to completing the assembly. At this time, the transformer magnetic circuit is complete, and the coil ratio measurement test and induction withstand voltage test can be carried out. Once the primary coil or the secondary coil has a wrong number of turns or a short circuit between turns, this temporary inspection can be found, avoiding the defect found after the formal assembly and rework. After the temporary inspection is completed, the upper iron yoke is removed, the coil is pulled out and assembled on the formal iron core. The production efficiency is improved, there is no rework work, which can save manufacturing costs and ensure the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a front view of a transformer coil performance detection device provided by the utility model;
[0018] Figure 2 It is a side view of a transformer coil performance detection device provided by the utility model;
[0019] Figure 3 The utility model is a top view of a transformer coil performance detection device provided by the utility model.
[0020] In the figure: 1. iron core; 2. upper iron yoke; 3. clamp; 4. base; 5. primary coil; 6. secondary coil; 7. lifting ear; 8. insulating support pad. DETAILED DESCRIPTION
[0021] The following is a further detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", 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 should not be understood as a limitation on the present invention.
[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example
[0024] The utility model provides a transformer coil performance detection device, please refer to Figure 1-3 , including a group of iron cores 1 stacked with high magnetic permeability silicon steel sheets; an upper iron yoke 2 is detachably installed above the iron core 1 and movably connected to the iron core 1; a lower iron yoke is provided below the iron core 1 and fixedly connected to the iron core 1 through a clamp 3; a base 4 is installed below the clamp 3 to stabilize the iron core 1.
[0025] Specifically, the iron core 1 is a double-column iron core, and a certain distance is left between the two columns for sleeve-connecting the primary coil 5 and the secondary coil 6 .
[0026] Specifically, the upper iron yoke 2 is an integral structure, and can be hoisted and moved as a whole through the lifting lugs 7 on the upper iron yoke 2. Since the upper iron yoke 2 is a detection device and not a formal transformer structure, the original multi-piece superimposed upper iron yoke can be made into an integral structure, which is convenient for hoisting and moving the upper iron yoke as a whole when the transformer coil is being detected.
[0027] In some embodiments, the lifting ears 7 are provided in multiple groups and are evenly distributed on the upper iron yoke 2 .
[0028] In some embodiments, the base feet 4 are provided in two groups, symmetrically arranged on both sides of the bottom of the detection device, and the base feet 4 are arranged perpendicular to the clamp 3 .
[0029] In some embodiments, an insulating support pad 8 is disposed on the clamp 3 to provide insulating support for the primary coil 5 and the secondary coil 6 .
[0030] By adopting the transformer coil performance detection device of the utility model, the coil to be assembled can be sleeved on the temporary iron core before the formal assembly. After the iron yoke is closed, the assembly is completed. At this time, the transformer magnetic circuit is complete, and the coil ratio measurement test and induction withstand voltage test can be carried out. Once the primary coil or the secondary coil has an error in the number of turns or a short circuit between turns, this temporary inspection can be found, avoiding the need for rework after the defects are found after the formal assembly. After the temporary inspection is completed, the iron yoke is removed, the coil is pulled out and assembled on the formal iron core. When there is only one coil, a few turns of wire can be wound around another iron core column as a temporary coil for testing. After adding the temporary inspection process, defective coils are avoided from entering the formal assembly process, the production efficiency is improved, and there is no rework work, which can save manufacturing costs and ensure the quality of the product.
[0031] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.
Claims
1. A transformer coil performance detection device, characterized in that: It comprises a group of iron cores (1) formed by stacking high magnetic permeability silicon steel sheets; An upper iron yoke (2) is detachably mounted above the iron core (1) and is movably connected to the iron core (1); A lower iron yoke is provided below the iron core (1) and is fixedly connected to the iron core (1) via a clamp (3); A foot (4) is installed below the clamp (3) to stabilize the iron core (1).
2. A transformer coil performance detection device as claimed in claim 1, characterized in that: The iron core (1) is a double-column iron core, with a certain distance between the two columns, and is used to sleeve the primary coil (5) and the secondary coil (6).
3. A transformer coil performance detection device as claimed in claim 2, characterized in that: The upper iron yoke (2) is an integral structure and can be hoisted and moved as a whole via the lifting lugs (7) on the upper iron yoke (2).
4. A transformer coil performance detection device as claimed in claim 3, characterized in that: The lifting ears (7) are provided in multiple groups and are evenly distributed on the upper iron yoke (2).
5. A transformer coil performance detection device as claimed in claim 1, characterized in that: The bottom feet (4) are provided in two groups and are symmetrically arranged on both sides of the bottom of the detection device.
6. A transformer coil performance detection device as claimed in claim 5, characterized in that: The base (4) is arranged perpendicularly to the clamp (3).
7. A transformer coil performance detection device as claimed in claim 1, characterized in that: An insulating support pad (8) is arranged on the clamp (3) and is used for insulating and supporting the primary coil (5) and the secondary coil (6).