KR100361361B1 - Non-impregnated high voltage transformer manufacturing method - Google Patents

Abstract

The present invention relates to a method for manufacturing an impregnated high pressure transformer, and in particular, in a known method for producing an impregnated transformer, in the outer circumferential surface of the "E" type core 1 and the "I" type core 2 overlapped and blocked. After forming several welds 8 in the transverse direction, the spray bond is spray-dried to the outside of the weld 8 including the exposed surfaces of the "E" type core 1 and the "I" type core 2. To form the rustproof layer 3, and block the "E" type core 1 and the "I" type cores 2 by forming at least one embossed portion 6a through press caulking, or Labor cost and product through the method of drilling several holes in the right angle direction of "type core 1" and "I" type cores 2 at regular intervals, inserting the rivets 6b, and performing the riveting to block them. Can greatly reduce the production cost of the product, and also generate vibrations and noise In addition, it is possible to prevent the occurrence of rust even after a long period of time, and in particular, the use of impregnated water can be excluded, thereby preventing environmental pollution and harm to worker's health. Automation was made possible.

Description

Non-impregnated high voltage transformer manufacturing method

The present invention relates to a method for manufacturing a non-impregnated high pressure transformer, and more particularly, to insert a coil having a predetermined thickness of an "E" type or an "I" type core, which is overlapped with a plurality of coils, to be manufactured without undergoing an impregnation process. It can greatly reduce labor costs and production costs of products, and prevent the occurrence of environmental pollution due to impregnated materials and harm to worker's health. In particular, it is possible to prevent the occurrence of vibration noise even in a strong magnetic field, and to invent the rust itself due to breakage of the rust preventive layer during production.

In general, when a transformer is wound around a primary coil and a secondary coil and supplies AC voltage to the primary coil, a voltage is generated in the secondary coil by mutual induction. The iron core (ie, the core) generates a eddy current. To prevent this, the thin sheets of insulated steel are cut into "E" or "I" to make them overlap each other.

Conventionally, when the holes of the bobbin 4, in which the coil 5 is wound, are filled with several "E" type cores 1 and "I" type cores 2 produced through the press-punching method as shown in FIG. Inserted to cross each other until, and then fixed by attaching the tape (9) to the outside of the "E" type and "I" core (1) (2) after the vibration and noise caused by high magnetic field and oxidation In order to prevent rust from being impregnated into the impregnation container such as varnish to impregnate the entire transformer including between the core and then to form the impregnation layer 10 by drying for a predetermined time,

After stacking several "E" type cores 1 and "I" type cores 2 produced by a press punching method as shown in FIG. The tape 9 is fixed to it, and then the respective "E" and "I" cores 1 and 2 are cut to a thickness corresponding to the hole width of the bobbin 4 in which the coil 5 is wound. After inserting the "E" type core 1 into the hole of the bobbin 4, the "I" type core 2 is put on the opening side of the "E" type core 1, and the connection part of both ends is welded, and a welding part ( 8) formed, and then put into the impregnation container to be impregnated between the cores including the intermediate contact of the "E" type and "I" core (1) (2) and the entire transformer, and then impregnated through the drying process. The layer 10 is formed to prevent vibration and noise caused by a high magnetic field and rust caused by oxidation.

However, this manufacturing process is made by hand most of the time, it costs a lot of labor costs, of course, despite the presence of many facilities such as drying furnaces, the production cost of the product is increased due to reduced productivity, and the impregnated water " Not only is it often inserted into the middle support of the "E" core and the middle of the "I" core, it does not completely close the gap, and is vibrated between the cores (ie the gap) by high magnetic fields. Often, the impregnated layer is broken. If a gap is generated between the two cores or the impregnated layer is broken, vibration noise is generated, and at the same time, rust is generated by oxidation due to film breakage of the cores. By using the same harmful impregnations, not only do they harm the health of workers, but also cause environmental pollution. There is such a problem.

Therefore, the present applicant has developed a method of manufacturing a non-impregnation low pressure transformer in order to solve the above problems, and has been proposed as a Korean Patent Application No. 2000-75549.

That is, by pressing a plurality of "E" -type and "I" core (1) (2) from the steel plate 100 by using a press continuously when the production of the rust solution by spraying each "E" by chow natural drying Forming a rust-proof layer 3 of a predetermined thickness on the surface of the " form " and " I " As described above, the "E" type and "I" cores 1 and 2 in which the rust-preventing layer 3 is formed are stacked at a height corresponding to the hole width of the bobbin 4 to be assembled, and then press caulking at least one M. Forming a boss portion 6 to block the boss portion 6; The upper surface portion of the intermediate support piece 1a is assembled by inserting the "E" type core 1 blocked by the embossing part 6 in the process into the hole of the bobbin 4 in which the coil 5 is wound. Injecting the two-component bond 7 having a constant amount and thickness to be cured at a room temperature in a rapid time at a temperature; The intermediate support piece 1a of the "E" type core 1 is brought up in close contact with the "I" type core 2 blocked by caulking above in the upper surface of the opening part of the "E" type core 1. A step of allowing the upper surface and the intermediate portion of the " I " type core 2 to be attached and fixed to each other by a two-component bond 7 introduced in the above process; Forming a welded portion 8 at the contact portion of the upper outer edge of the support piece 1b at both ends of the " E " type core 1 and the bottom both edge portions of the " I " type core 2; It has been suggested how to prepare the same impregnated low pressure transformer.

Therefore, in the case of low voltage transformers in which the magnetic field is not generated much during the operation of the transformer, the above-described process, in particular, "E" and "I" cores are stacked at a height corresponding to the hole width of the bobbin to be assembled, and then press caulking. Through the formation of one or more embossed parts to form a block, assemble the "E" type core into the hole of the bobbin wound around the coil, and put a two-component bond on the upper surface of the intermediate support piece, and put the "I" type core on it. It is also possible to produce the process by welding only the contact portion of the upper outer edge of the support piece of both ends of the "E" type core and the bottom both edges of the "I" type core, by raising the contact with the middle part.

However, in the case of the high pressure transformer, the magnetic field is generated very large, and the vibration noise cannot be prevented only by forming several embossing parts and welding two places. Also, when the "E" type and "I" cores are continuously punched and manufactured, When the antirust solution is sprayed to form a rustproof layer having a predetermined thickness, the " E " and " I " cores are piled up to a predetermined height and then formed on the surface of the individual cores when one or more embossed portions are formed through press caulking. Some of the pre-formed rustproof layer is often damaged by external pressure, there is a problem that rust is generated later in this area.

The present invention has been made to solve such a conventional problem, it is possible to reduce the labor cost and production cost of the product through no impregnation, as well as to prevent vibration between cores even if a strong magnetic field such as high-pressure transformer It is possible to prevent the generation of vibration noise due to the prevention of rust, and to prevent the occurrence of environmental pollution and harm to the health of workers by eliminating the use of impregnated materials. It is possible to realize the automation, and to provide a method of manufacturing an impregnated high pressure transformer that can prevent rust generation due to damage of the rustproof layer during manufacturing through the process of forming the rustproof layer after all assembly is completed. have.

The object of the present invention described above is a step of punching an "E" type and an "I" core using a press; Stacking the "E" and "I" cores at a height corresponding to the hole width of the bobbin to be assembled and fixing them to be one block; A step of inserting a "E" type core blocked in the above step into a hole of a bobbin wound with a coil and assembling a predetermined amount of a two-component bond formed at a high temperature at a room temperature on the upper surface of the intermediate support piece; Placing the blocked "I" type core in close contact with the opening of the "E" type core so that the intermediate portion is attached and fixed by the two-component bond introduced in the step; In the non-impregnated transformer manufacturing method comprising the step of forming a welding portion for fixing the contact portion between the end of the "E" type core and "I" type core by welding,

On the outer circumferential surface of the "E" type core and "I" type core which overlap each other, several welding parts are formed in a horizontal direction, and then to the outer side of the welding part containing the exposed surface of the "E" type core and "I" type core. Based on forming the rustproof layer by spraying the spray bond and drying,

Forming one or more embossed portions by press caulking in a manner of blocking the "E" type cores and the "I" type cores stacked at a predetermined height, and the intermediate intermediate positions of the "E" type cores and "I" type cores This can be achieved by drilling a hole in a direction perpendicular to and then riveting it with a rivet.

Therefore, the taping process of "E" and "I" cores, the impregnation process and the drying process after assembly with bobbins are eliminated, so that a large amount of transformers can be continuously produced at a low labor cost, thereby producing labor costs and products. It can reduce the cost and prevent the generation of vibration noise between cores even when strong magnetic field such as high pressure transformer is generated. It can be prevented, and in particular, since no impregnation is used, it is possible to prevent the environmental pollution and harm to the health of workers due to this, and also to realize the automation with a small amount of equipment.

1 is a perspective view showing an embodiment of a conventional impregnation transformer.

Figure 2 is a front sectional view showing another embodiment of the conventional impregnation transformer.

Figure 3 is a front sectional view of a transformer of a conventional non-impregnation low pressure transformer.

Figure 4 is a front cross-sectional view of the high pressure transformer produced by an embodiment of the present invention.

Figure 5 is a front sectional view of a high pressure transformer produced by another embodiment of the present invention.

(A)-(h) is a process chart for demonstrating this invention method.

Explanation of symbols on the main parts of the drawings

1,2: "E" type and "I" core 3: antirust layer

4: bobbin 5: coil

6a: embossed part 6b: rivet

7: two-component bond 8: welded portion

20: liquid supply

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 shows a front sectional view of a high pressure transformer produced by an embodiment of the present invention, Figure 5 shows a front sectional view of a high pressure transformer manufactured by another embodiment of the present invention, Figure 6 (a) -(h) shows a flowchart for explaining the present method.

According to this, a process of continuously punching a plurality of "E" -type and "I" cores (1) (2) from the steel sheet 100 by using a press to produce; A step of stacking the " E "and " I " cores (1) (2) to a height corresponding to the hole width of the bobbin (4) to be assembled into a single object; In the above process, the "E" type core 1 is inserted into the hole of the bobbin 4 in which the coil 5 is wound, and then assembled. Injecting the liquid bond (7) to have a predetermined amount and a predetermined thickness; The " I " type core 2 blocked above is placed in close contact with the upper surface of the opening portion of the " E " type core 1 so that the upper surface of the intermediate support piece 1a of the " E " A step in which the intermediate portions of the " I " cores 2 are attached to and fixed to each other by the two-component bonds 7 introduced in the process; Forming a welded portion (8) at the contact portion of the upper outer edge of the support piece (1b) of both ends of the "E" type core (1) and the bottom edge of the "I" type core (2); In the transformer manufacturing method,

On the outer circumferential surfaces of the "E" type core 1 and the "I" type core 2 overlapped and blocked, several welds 8 are additionally formed, and then the "E" type core 1 is formed. And a spray bond is spray-dried to the outside of the welded part 8 including the exposed surface of the "I" type core 2, and the antirust layer 3 is formed fundamentally.

In addition, the present invention, when the "E" type core 1 and the "I" type core 2 are stacked at a predetermined height to block into one object, at least one embossed portion 6a through press caulking as shown in FIG. ) Or by drilling a plurality of holes at regular intervals in the orthogonal direction of the "E" type core 1 and the "I" type cores 2 and inserting the rivet 6b therein, as shown in FIG. It is an additional feature to fix by riveting.

Referring to the effect of the production method of the present invention made of such a process as follows.

First, a steel plate 100 having a predetermined area and thickness is punched as shown in FIG. 6 (a) by a press to form an "E" type and an "I" core (1) (2) having a shape as shown in FIG. Are continuously cut, and then these " E " and " I " cores 1 and 2 are piled up to a height corresponding to the hole width of the bobbin 4 to be assembled using a predetermined jig, and then using a press. One or more embossed portions 6a are formed by caulking, or a plurality of holes are drilled at regular intervals in a direction perpendicular to the "E" type core 1 and the "I" type cores 2. When the riveting is carried out by inserting the rivet 6b into the hole and hitting it with a hammer or the like, each of the "E" type and the "I" core 1 having a predetermined thickness as shown in FIG. 2) appears to be in a block (or integrated) form.

At this time, by forming or installing the number of the embossed portion (6a) and the rivet (6b) formed or installed in the "E" type and "I" core (1) (2) by a strong magnetic field generated during high-voltage transformer operation “E” type and “I” cores 1, 2 can primarily prevent vibration.

Subsequently, the "E" type and "I" cores 1 and 2, which are stacked to a predetermined thickness and formed by the caulking, are blocked by the rivets 6b, or are formed by the caulking. When manufacturing one transformer by combining, first, the "E" type core 1 is assembled into the hole of the bobbin 4 in which the coil 5 is wound as shown in FIG. A two-component bond 7 such as an epoxy resin, which is cured at room temperature in a short time at room temperature, is introduced into the upper surface of the support piece 1a so as to have a certain amount and a constant thickness as shown in Fig. 6E.

Subsequently, the " E " type core 1 as shown in FIG. 6 (f) is placed in close contact with the " I " type core 2 previously blocked on the upper surface of the opening of the " E " The upper surface of the intermediate support piece 1a of the intermediate portion of the " I " type core 2 is fixed to each other by the two-component bond 7.

When the intermediate support piece 1a of the "E" type core 1 and the intermediate portions of the "I" type core 2 thus bonded to the bobbin 4 are mutually attached by the two-component bond 7, the " "E" -type and "I" -type cores 1 including the upper outer edges of both end pieces 1b of the E-type core 1 and the contact portions of the bottom edges of the "I" -type core 2. On the outer circumferential surface of (2), several welds 8 are formed in the transverse direction as shown in Fig. 6G.

Therefore, the "E" type and "I" cores (1) (2) due to the strong magnetic field generated during the operation of the high voltage transformer can prevent the vibration secondarily, even if the high voltage transformer generates a large magnetic field. Vibration noise is not generated by the fixing means.

Meanwhile, when the process of assembling and fixing the "E" type core 1 and the "I" type core 2 on the bobbin 4 as described above is completed, the "E" type core is provided through a separate liquid supplier 20. (1) and the spray bond is applied to the outside of the welded part 8 including the exposed surface of the " I " type core 2, and then dried, and then rust-proof having a predetermined thickness on their surface as shown in Fig. 6H. Layer 3 is formed completely in the form of a coating.

Thus, when spray spray is spray-dried to the outside of the welding part 8 including the exposed surface of the "E" type core 1 and the "I" type core 2, the rust prevention layer 3 which has a predetermined thickness is formed, and rust generate | occur | produces. It can also prevent micro vibration noise as well as preventing

The series of processes described above can automatically carry out operations of punching, blocking, assembling, inserting, attaching, welding, and spraying bond spraying at predetermined positions while transferring each component through a conveyor. In other words, it is possible to mass produce by improving the productivity of the product (in other words, it is possible to automate), and the production cost of the product can be greatly reduced by reducing the labor cost.

As described above, according to the present invention, when blocking the "E" type and "I" cores, the two-component bonds are formed by caulking or riveting, not by taping. After disassembly, the solution is sprayed, not impregnated, so that the taping process of "E" and "I" cores is eliminated, and the impregnation process and drying process are not required after assembly with bobbin. It can produce large amount of transformers, which can greatly reduce labor cost and production cost, and also prevent the occurrence of vibration and noise due to strong magnetic field, and also prevent the occurrence of rust even after long time. In particular, the use of impregnated water can be eliminated, which can prevent environmental pollution and harm to workers' health. It will be effective, such as upset is possible.

Claims (3)

A process of continuously punching out a plurality of "E" -type and "I" cores (1) (2) from a steel plate (100) by using a press; A step of stacking the " E "and " I " cores (1) (2) to a height corresponding to the hole width of the bobbin (4) to be assembled into a single object; In the above process, the "E" type core 1 is inserted into the hole of the bobbin 4 in which the coil 5 is wound, and then assembled. Injecting the liquid bond (7) to have a predetermined amount and a predetermined thickness; The " I " type core 2 blocked above is placed in close contact with the upper surface of the opening portion of the " E " type core 1 so that the upper surface of the intermediate support piece 1a of the " E " A step in which the intermediate portions of the " I " cores 2 are attached to and fixed to each other by the two-component bonds 7 introduced in the process; Forming a welded portion (8) at the contact portion of the upper outer edge of the support piece (1b) of both ends of the "E" type core (1) and the bottom edge of the "I" type core (2); In the transformer manufacturing method, On the outer circumferential surface of the "E" type core 1 and the "I" type core 2 overlapped and blocked, several welds 8 are additionally formed, and the "E" type core 1 and A method of manufacturing an impregnated high pressure transformer, comprising the step of spray drying the spray bond to the outside of the welded portion 8 including the exposed surface of the " I " The method according to claim 1, The process of stacking the "E" type core 1 and the "I" type core 2 to a predetermined height and blocking them into one object is characterized by forming at least one embossed portion 6a through press caulking. Non-impregnation high pressure transformer manufacturing method. The process of stacking the "E" type core 1 and the "I" type core 2 to a predetermined height and blocking them into a single object includes the "E" type core 1 and the "I" type core 2. Method of manufacturing a non-impregnated high pressure transformer, which drills a plurality of holes in a right angle in the direction perpendicular to each other, inserting the rivet (6b) and performing riveting.