CN111180184A

CN111180184A - Novel four-cracking rectifier transformer structure

Info

Publication number: CN111180184A
Application number: CN202010104474.6A
Authority: CN
Inventors: 吕元华; 马兴华; 胡斌康
Original assignee: Yiwu Fengqing Technology Co Ltd
Current assignee: Yiwu Fengqing Technology Co Ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-05-19

Abstract

The utility model relates to a novel four schizolysis rectifier transformer structures, including iron core post, high voltage winding, main air channel and low voltage winding, high voltage winding is installed through the electric property winding in the outside of iron core post, and has main air channel in high voltage winding's the outside arrangement, low voltage winding passes through electric connection and installs in high voltage winding's outer end. The beneficial effect of this application is: this novel four schizolysis rectifier transformer structures, moreover, the steam generator is simple in structure, the high pressure is a whole, radial magnetic leakage is few, space utilization is high, save material, 4 sections of tip strengthen the insulation about the low pressure, can avoid the tip electric field to concentrate and cause the insulation damage trouble, the quality is guaranteed, no matter the low pressure is independent operation (partly pass) or moves simultaneously (pass through completely), its high pressure that corresponds all is on same more or less same axial height, the magnetic flow distributes evenly, it is little with ordinary bifilar winding difference, this rectifier transformer body structure advantage: the insulation safety margin is large, the short-circuit resistance is strong, the loss is low, and the temperature rise is low.

Description

Novel four-cracking rectifier transformer structure

Technical Field

The application relates to the technical field of rectifier transformers, in particular to a novel four-cracking rectifier transformer structure.

Background

Along with the popularization and application of the alternating-current variable-frequency speed regulation technology, the requirements of the transmission rectifier transformer matched with the alternating-current variable-frequency speed regulation technology are increased more and more. The structure of a common transmission rectifier transformer is similar to that of a common power transformer, and a common double-winding type is adopted. With the continuous and deep application of the alternating-current variable-frequency speed regulation technology by users, the requirement on a rectifier transformer is higher and higher, and a four-split transmission rectifier transformer (hereinafter referred to as a four-split rectifier transformer) is a new product which is independently researched and designed in recent years by our company. The low-voltage valve side winding of the transformer is split into four independent branches, power can be supplied to four different loads, and the effect of one machine with multiple functions is achieved.

The existing double-winding transmission rectifier transformer has the conditions of large loss and large occupied area, and the leakage flux distribution of the transformer during the through operation is the same as that of the conventional double-coil transformer. During half-crossing operation, the windings which are not put into operation only bear a small part of working current, and the low-voltage windings which are put into operation and the corresponding high-voltage windings bear a large part of working current, so that the transverse leakage magnetic flux is increased, the eddy current loss is increased, and the axial short-circuit electrodynamic force is increased. In order to overcome the adverse effect caused by transverse leakage flux, the winding needs to enlarge an oil passage for heat dissipation, a thin wire is adopted to reduce eddy current loss, and after the thickness of the wire is reduced, the short-circuit resistant electrodynamic force of the winding is weaker.

Disclosure of Invention

An object of this application is to provide a novel four schizolysis rectifier transformer structures to solve the current duplex winding transmission rectifier transformer who proposes in the above-mentioned background art, there is the big and great condition of area of loss, and when the transformer passes through the operation simultaneously, it is the same with the distribution of conventional duplex ring transformer leakage magnetic flux. During half-crossing operation, the windings which are not put into operation only bear a small part of working current, and the low-voltage windings which are put into operation and the corresponding high-voltage windings bear a large part of working current, so that the transverse leakage magnetic flux is increased, the eddy current loss is increased, and the axial short-circuit electrodynamic force is increased. In order to overcome the adverse effect caused by transverse leakage flux, the winding needs to enlarge an oil passage for heat dissipation, a thin wire is adopted to reduce eddy current loss, and after the thickness of the wire is reduced, the short-circuit resistant electrodynamic force of the winding is weaker.

In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides a novel four schizolysis rectifier transformer structures, includes iron core post, high voltage winding, main air channel and low voltage winding, high voltage winding is installed through the electric property winding in the outside of iron core post, and high voltage winding's the outside settles and have main air channel, low voltage winding passes through electric connection and installs in high voltage winding's outer end.

Preferably, the high-voltage winding is wrapped at the outer end of the outer part of the iron core, and the low-voltage winding is in a double-cake continuous type.

Preferably, the high-voltage winding and the low-voltage winding are respectively divided into multiple paths and are arranged in a staggered manner, and the low-voltage winding is wrapped outside the high-voltage winding in a wrapping manner.

Preferably, the high-voltage winding is wrapped at the outer end of the core limb in a wrapping manner, and the low-voltage winding is wrapped at the outer end of the high-voltage winding in a wrapping manner.

Preferably, the high-voltage windings are mutually matched to form an integrated structure.

Preferably, the high-voltage winding is a pancake winding, while the low-voltage winding is a double-pancake continuous winding, and every two cakes of the high-voltage winding are 1 segment, and every 4 segments are one path and are axially arranged.

Preferably, the low-voltage windings are connected through copper bars by wires and are led out in parallel.

Compared with the prior art, the beneficial effects of this application are as follows:

1. the high-voltage transformer has the advantages of simple structure, integration of high voltage, less radial magnetic leakage, high space utilization rate and material saving;

2. 4 sections of tip strengthen insulating about this application low pressure, can avoid tip electric field to concentrate and cause the insulation damage trouble. The quality is guaranteed.

3. Fig. 3 of the present application is a distribution of leakage magnetic flux when the transformer is in operation. Regardless of whether the low voltage operates independently (half-through) or simultaneously (full-through), the corresponding high voltage is on almost the same axial height, the magnetic flux distribution is uniform, and the difference from the common double winding is not large.

4. This rectifier transformer ware body structure advantage of this application: the insulation safety margin is large, the short-circuit resistance is strong, the loss is low, the temperature rise is low, and the cost is low.

Drawings

Fig. 1 is a schematic diagram of a high-low voltage winding structure of a novel four-split rectifier transformer structure according to the present application;

FIG. 2 is a structural layout diagram of a novel four-split rectifier transformer structure body according to the present application;

fig. 3 is a schematic diagram of distribution of leakage flux during operation of a transformer with a novel four-split rectifier transformer structure according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

In the description of the present application, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1-3, the present application provides a technical solution: a novel four-split rectifier transformer structure comprises an iron core column, a high-voltage winding, a main air channel and a low-voltage winding, wherein the high-voltage winding is wound outside the iron core column through an electric property, the main air channel is arranged outside the high-voltage winding, and the low-voltage winding is arranged at the outer end of the high-voltage winding through an electric connection;

the high-voltage winding is wrapped at the outer end of the outer part of the iron core in a wrapping shape, and the low-voltage winding is in a double-cake continuous type; the structure is simple, the high voltage is an integral body, the radial magnetic leakage is less, the space utilization rate is high, and the material is saved;

the high-voltage winding and the low-voltage winding are divided into multiple paths and are arranged in a staggered manner, and the low-voltage winding is wrapped outside the high-voltage winding in a wrapping manner; 4 sections of the lower end part and the upper end part of the low voltage strengthen insulation, and the insulation damage fault caused by the concentration of an electric field at the end part can be avoided. The quality is guaranteed;

the high-voltage winding is wrapped at the outer end of the iron core column in a wrapping manner, and the low-voltage winding is wrapped at the outer end of the high-voltage winding in a wrapping manner; the high-voltage windings are mutually matched to form an integrated structure; fig. 3 is a distribution of leakage magnetic flux when the transformer is in operation. Whether the low voltage operates independently (half-through) or simultaneously (full-through), the corresponding high voltage is on almost the same axial height, the magnetic flux distribution is uniform, and the difference from the common double winding is not large;

the high-voltage winding is of a cake type, the low-voltage winding is of a double-cake continuous winding, every two cakes of the high-voltage winding are 1 section, every 4 sections are one path, and the high-voltage winding and the low-voltage winding are axially arranged; the low-voltage windings are connected through copper bars by wires and are led out in parallel; this rectifier transformer ware body structure advantage: the insulation safety margin is large, the short-circuit resistance is strong, the loss is low, the temperature rise is low, and the cost is low.

To sum up, this novel four schizolysis rectifier transformer structures, during the use, high pressure is a whole, and radial magnetic leakage is few, and space utilization is high, and save material, 4 sections enhancement insulations of tip about the low pressure can avoid tip electric field to concentrate and cause the insulation damage trouble. The quality is guaranteed, and fig. 3 shows the distribution of leakage flux when the transformer is in operation. Whether the low voltage runs independently (half-through) or simultaneously (full-through), the corresponding high voltage is on almost the same axial height, the magnetic flux distribution is uniform, the difference from the common double winding is not large, the low voltage windings are connected through copper bars by wires and are led out in parallel; this rectifier transformer ware body structure advantage: the insulation safety margin is large, the short-circuit resistance is strong, the loss is low, the temperature rise is low, and the cost is low.

The above description is only for the preferred embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present application and the inventive concept thereof within the technical scope of the present application, and shall be covered by the scope of the present application.

Claims

1. The utility model provides a novel four schizolysis rectifier transformer structures, includes iron core post, high voltage winding, main air channel and low voltage winding, its characterized in that: the high-voltage winding is wound and installed outside the iron core column through an electric property, a main air channel is arranged outside the high-voltage winding, and the low-voltage winding is installed at the outer end of the high-voltage winding through an electric connection.

2. The novel quad-split rectifier transformer structure of claim 1, wherein: the high-voltage winding is wrapped at the outer end of the outer part of the iron core, and the low-voltage winding is in a double-cake continuous type.

3. The novel quad-split rectifier transformer structure of claim 2, wherein: the high-voltage winding and the low-voltage winding are divided into multiple paths and are arranged in a staggered mode, and the low-voltage winding is wrapped outside the high-voltage winding.

4. The novel quad-split rectifier transformer structure of claim 1, wherein: the high-voltage winding is wrapped at the outer end of the iron core column in a wrapping manner, and the low-voltage winding is wrapped at the outer end of the high-voltage winding in a wrapping manner.

5. The novel quad-split rectifier transformer structure of claim 1, wherein: the high-voltage windings are mutually matched to form an integrated structure.

6. The novel quad-split rectifier transformer structure of claim 1, wherein: the high-voltage winding is of a cake type, the low-voltage winding is of a double-cake continuous winding, every two cakes of the high-voltage winding are 1 section, every 4 sections are one path, and the high-voltage winding and the low-voltage winding are axially arranged.

7. The novel quad-split rectifier transformer structure of claim 1, wherein: the low-voltage windings are connected through copper bars in an electric wire mode and are led out in parallel.