Modular combined power transformer

Abstract

The application provides a modular combined power transformer. The modular combined power transformer comprises a core and a coil winding, the core is formed by stacking silicon steel sheets one by one, and the core comprises a U-shaped fixed body, the U-shaped fixed body comprises a fixed lower yoke, a first core column and a second core column, the fixed lower yoke, the first core column and the second core column are fixedly formed in a U shape, the first core column and the second core column are parallel to each other along a first direction of the core, the first core column and the second core column are perpendicular to the fixed lower yoke respectively, and the first core column and the second core column are arranged at two ends of the longitudinal direction of the fixed lower yoke respectively; a first movable upper yoke is arranged along a second direction of the core, two ends of the first movable upper yoke are connected with open ends of the first core column and the second core column respectively, and the first movable upper yoke is connected with the U-shaped fixed body in a detachable mode. The application solves the problem that the structure of the transformer in the prior art is fixed and cannot adapt to repeated debugging and replacement.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical facilities, and in particular to a power transformer comprising a core that can be manufactured and installed modularly. BACKGROUND

[0002] A power transformer is a necessary device for power transmission and power distribution for power users. The power transformer is composed of two or more coil windings wound on the same core, and the coil windings are inducted to each other through an alternating magnetic field and work according to the principle of electromagnetic induction to transfer electric energy, change voltage and current in the power system to meet the needs of power transmission and power use. The core is the main magnetic circuit and framework of the power transformer. As a magnetic circuit, the core converts the primary electric energy of the transformer into magnetic energy, and then converts the magnetic energy into secondary electric energy to be transmitted to the power equipment. As a magnetic circuit of the transformer, the core is generally composed of silicon steel sheets stacked one by one, wherein the clamping device connects the silicon steel sheets to each other to form a complete and firm core structure. The conventional core structure needs to be sleeved with coil windings on the power transformer first, and then the upper yoke is inserted piece by piece / level by level. Since the products with fixed performance do not need to repeatedly insert and pull out the core, this structure of the power transformer does not cause too much impact in the case that the power transformer does not fail. However, if the product needs to be repeatedly changed and pulled out the coil, for example, the product is a research and development sample for testing, or the coil performance needs to be tested individually, the following situations may occur: in the case of replacing the coil, the core yoke needs to be repeatedly inserted and pulled out, thereby increasing a huge workload; in the case of changing the type of the core, a new core needs to be manufactured, thereby increasing the manufacturing cost. SUMMARY

[0003] The main purpose of the present application is to provide a modular combined power transformer to solve the problem that the structure of the transformer in the prior art is fixed and cannot adapt to repeated debugging and replacement.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a modular combined power transformer is provided, comprising a core and a coil winding, the core is composed of silicon steel sheets stacked one by one, characterized in that the core comprises: a U-shaped fixed body comprising a fixed lower yoke, a first core column and a second core column, the fixed lower yoke, the first core column and the second core column are fixedly formed in a U shape, wherein the first core column and the second core column are parallel to each other, the first core column and the second core column are perpendicular to the fixed lower yoke respectively, and the first core column and the second core column are arranged at two ends of the fixed lower yoke respectively; a first movable upper yoke, two ends of the first movable upper yoke are connected with the open end of the first core column and the open end of the second core column respectively, so as to be connected with the U-shaped fixed body in a detachable manner.

[0005] In this way, in the case of testing of a development sample, the coil to be tested can be replaced simply by separating the first movable upper yoke from the U-shaped fixing body, and thus, simple disconnection of the transformer is achieved.

[0006] Further, according to an embodiment of the present application, the core further includes a second movable upper yoke, the second movable upper yoke being bound together with the first movable upper yoke in a manner that they are parallel to each other, and in a longitudinal direction of the core, the second movable upper yoke is positioned above the first movable upper yoke.

[0007] In this way, in the case where the type of the core needs to be changed, the type of the core can be changed by the second movable upper yoke, thereby reducing manufacturing costs.

[0008] Further, according to an embodiment of the present application, the core further includes a movable lower yoke, the movable lower yoke being bound together with the fixed lower yoke in a manner that they are parallel to each other, and in a longitudinal direction of the core, the movable lower yoke is positioned below the fixed lower yoke.

[0009] In this way, in the case where the type of the core needs to be changed, the type of the core can be changed by binding the movable lower yoke, thereby reducing manufacturing costs.

[0010] Further, according to an embodiment of the present application, the core further includes a first movable side column and a second movable side column, each of the first movable side column and the second movable side column being bound together with the U-shaped fixing body.

[0011] In this way, in the case where the type of the core needs to be changed, the type of the core can be changed by binding the first movable side column and the second movable side column, thereby reducing manufacturing costs.

[0012] Further, according to an embodiment of the present application, the core is a 1 / 2 type core in which the number of core columns having the coil winding wound therearound is 1 and the number of side columns having no coil winding wound therearound is 2, the 1 / 2 type core including a first U-shaped fixing body, a second U-shaped fixing body, a first first movable upper yoke, and a second first movable upper yoke, wherein a second core column of the first U-shaped fixing body is bound together with a first core column of the second U-shaped fixing body, the first first movable upper yoke is connected to the first U-shaped fixing body in a detachable manner, and the second first movable upper yoke is connected to the second U-shaped fixing body in a detachable manner.

[0013] In this way, in the case where the type of the core needs to be changed to a 1 / 2 type core, the type of the core can be changed by the two U-shaped fixing bodies and the two first movable upper yokes, thereby reducing manufacturing costs.

[0014] Further, according to an embodiment of the present application, the iron core is a 2 / 2 type iron core in which the number of core columns with coil windings is 2 and the number of side columns without coil windings is 2, and the 2 / 2 type iron core includes a first U-shaped fixed body, a second U-shaped fixed body, a third U-shaped fixed body, a first first movable upper yoke, a second first movable upper yoke, and a third first movable upper yoke, wherein the second core column of the first U-shaped fixed body is tied together with the first core column of the second U-shaped fixed body, the second core column of the second U-shaped fixed body is tied together with the first core column of the third U-shaped fixed body, the first first movable upper yoke is connected to the first U-shaped fixed body in a detachable manner, the second first movable upper yoke is connected to the second U-shaped fixed body in a detachable manner, and the third first movable upper yoke is connected to the third U-shaped fixed body in a detachable manner.

[0015] In this way, in the case where the type of the iron core needs to be changed to a 2 / 2 type iron core, the type of the iron core can be changed by three U-shaped fixed bodies and three first movable upper yokes, thereby reducing manufacturing costs.

[0016] Further, according to an embodiment of the present application, the iron core is a 3 / 2 type iron core in which the number of core columns with coil windings is 3 and the number of side columns without coil windings is 2, and the 3 / 2 type iron core includes a first U-shaped fixed body, a second U-shaped fixed body, a third U-shaped fixed body, a fourth U-shaped fixed body, a first first movable upper yoke, a second first movable upper yoke, a third first movable upper yoke, and a fourth first movable upper yoke, wherein the second core column of the first U-shaped fixed body is tied together with the first core column of the second U-shaped fixed body, the second core column of the second U-shaped fixed body is tied together with the first core column of the third U-shaped fixed body, the second core column of the third U-shaped fixed body is tied together with the first core column of the fourth U-shaped fixed body, the first first movable upper yoke is connected to the first U-shaped fixed body in a detachable manner, the second first movable upper yoke is connected to the second U-shaped fixed body in a detachable manner, the third first movable upper yoke is connected to the third U-shaped fixed body in a detachable manner, and the fourth first movable upper yoke is connected to the fourth U-shaped fixed body in a detachable manner.

[0017] In this way, in the case where the type of the iron core needs to be changed to a 3 / 2 type iron core, the type of the iron core can be changed by four U-shaped fixed bodies and four first movable upper yokes, thereby reducing manufacturing costs.

[0018] Further, according to an embodiment of the present application, the core is a 1 / 1 core or a 2 / 0 core, in the 1 / 1 core, the number of core columns with coil windings is 1, and the number of side columns without coil windings is 1, in the 2 / 0 core, the number of core columns with coil windings is 2, and the number of side columns without coil windings is 0, the 1 / 1 core or the 2 / 0 core comprises a U-shaped fixed body, a first movable upper yoke, a second movable upper yoke, a movable lower yoke, a first movable side column and a second movable side column, wherein the first movable side column and the first core column of the U-shaped fixed body are bound together in a parallel manner, the second movable side column and the second core column of the U-shaped fixed body are bound together in a parallel manner, and the U-shaped fixed body is arranged between the first movable side column and the second movable side column.

[0019] In this way, when it is necessary to change the type of the core to a 1 / 1 core or a 2 / 0 core, the type of the core can be changed by a U-shaped fixed body, a first movable upper yoke, a second movable upper yoke, a movable lower yoke, a first movable side column and a second movable side column, thereby reducing the manufacturing cost.

[0020] Further, according to an embodiment of the present application, the core is a 3 / 0 core, in the 3 / 0 core, the number of core columns with coil windings is 3, and the number of side columns without coil windings is 0, the 3 / 0 core comprises a first U-shaped fixed body, a second U-shaped fixed body, a first first movable upper yoke, a second first movable upper yoke, a first second movable upper yoke, a second second movable upper yoke, a first movable lower yoke, a second movable lower yoke, a first movable side column and a second movable side column, wherein the second core column of the first U-shaped fixed body and the first core column of the second U-shaped fixed body are bound together, the first first movable upper yoke is detachably connected with the first U-shaped fixed body, the second first movable upper yoke is detachably connected with the second U-shaped fixed body, the first second movable upper yoke and the first first movable upper yoke are bound together in a parallel manner, the second second movable upper yoke and the second first movable upper yoke are bound together in a parallel manner, the first movable lower yoke and the fixed lower yoke of the first U-shaped fixed body are bound together in a parallel manner, the second movable lower yoke and the fixed lower yoke of the second U-shaped fixed body are bound together in a parallel manner, the first movable side column and the first core column of the first U-shaped fixed body are bound together in a parallel manner, the second movable side column and the second core column of the second U-shaped fixed body are bound together in a parallel manner, and the first U-shaped fixed body and the second U-shaped fixed body are arranged between the first movable side column and the second movable side column.

[0021] In this way, in the case where the type of the iron core needs to be changed to a 3 / 0 type iron core, the type of the iron core can be changed by the two U-shaped fixed bodies, the two first movable upper yokes, the two second movable upper yokes, the two movable lower yokes, the first movable side column, and the second movable side column, thereby reducing manufacturing costs.

[0022] Further, according to an embodiment of the present application, in the longitudinal direction of the iron core, the cross section of the first movable upper yoke and the cross section of the second movable upper yoke together form a whole circle.

[0023] In this way, by forming the cross section of the first movable upper yoke and the cross section of the second movable upper yoke together as a whole circle, the total magnetic flux within the iron core can be increased.

[0024] Further, according to an embodiment of the present application, in the whole circle, the cross section of the first movable upper yoke is a full circle, and the cross section of the second movable upper yoke is a half circle.

[0025] In this way, by forming the cross section of the first movable upper yoke as a full circle and the cross section of the second movable upper yoke as a half circle, the total magnetic flux within the iron core can be increased.

[0026] Further, according to an embodiment of the present application, in the longitudinal direction of the iron core, the cross section of the movable lower yoke and the cross section of the fixed lower yoke together form a whole circle.

[0027] In this way, by forming the cross section of the movable lower yoke and the cross section of the fixed lower yoke together as a whole circle, the total magnetic flux within the iron core can be increased.

[0028] Further, according to an embodiment of the present application, in the whole circle, the cross section of the fixed lower yoke is a full circle, and the cross section of the movable lower yoke is a half circle.

[0029] In this way, by forming the cross section of the fixed lower yoke as a full circle and the cross section of the movable lower yoke as a half circle, the total magnetic flux within the iron core can be increased.

[0030] Further, according to an embodiment of the present application, in the horizontal direction of the iron core, the cross section of the first movable side column and the cross section of the first core column of the U-shaped fixed body together form a whole circle, and the cross section of the second movable side column and the cross section of the second core column of the U-shaped fixed body together form a whole circle.

[0031] In this way, by forming the cross section of the movable side column and the cross section of the first core column of the U-shaped fixed body together as a whole circle, and forming the cross section of the second movable side column and the cross section of the second core column of the U-shaped fixed body together as a whole circle, the total magnetic flux within the iron core can be increased.

[0032] The technical scheme of the present application provides a modular combined power transformer, the iron core of the transformer is formed as modular components which can be combined with each other, so that the coil winding of the transformer can be conveniently replaced, and the type of the iron core can be changed as required. Thus, the problem that the structure of the transformer in the prior art is fixed and cannot adapt to repeated debugging and replacement is solved. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description, explain the application. In the drawings:

[0034] Figure 1 Fig. 1 shows a perspective view of the combined state of the iron core of the modular combined power transformer according to the present application;

[0035] Figure 2 Fig. 2 shows a perspective view of the separated state of the iron core of the modular combined power transformer according to the present application;

[0036] Figure 3 Fig. 3 shows a plan view of the separated state of the iron core of the modular combined power transformer according to the present application;

[0037] Figure 4 Fig. 4 shows a sectional view of the parts of the iron core of the modular combined power transformer according to the present application; and

[0038] Figure 5 Fig. 5 shows a schematic view of the type of the iron core composed of the modular combined power transformer according to the present application.

[0039] In the above drawings, the following reference signs are used:

[0040] 10: iron core;

[0041] 102: fixed lower yoke;

[0042] 104: first core column;

[0043] 106: second core column;

[0044] 108: first movable upper yoke;

[0045] 110: second movable upper yoke;

[0046] 112: movable lower yoke;

[0047] 114: first movable side column;

[0048] 116: second movable side column;

[0049] 502: 1 / 2 type iron core;

[0050] 504: 2 / 2 type core;

[0051] 506: 1 / 1 type core or 2 / 0 type

[0052] core;

[0053] 508: 3 / 0 type core;

[0054] 510: 3 / 2 type core. DETAILED DESCRIPTION

[0055] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict, if necessary. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0056] It should be noted that unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0057] In the present application, unless otherwise specified, the orientation words such as "upper", "lower", "top", "bottom" are generally directed to the direction shown in the drawings, or are directed to the vertical, perpendicular or gravity direction of the components themselves; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0058] Obviously, the above-described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by one of ordinary skill in the art without creative labor should belong to the scope of protection of the present application.

[0059] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, work, device, component and / or their combination.

[0060] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0061] To address the problem that existing transformers have fixed structures and cannot adapt to repeated debugging and replacement, a modular combined power transformer is provided.

[0062] Figure 1 A perspective view of the assembled core of a modular combined power transformer according to the present invention is shown. The core 10 is the main magnetic circuit and frame of the power transformer. As the magnetic circuit, the core 10 converts the primary electrical energy of the transformer into magnetic energy, and then converts the magnetic energy into secondary electrical energy, which is then transmitted to the electrical equipment. As the frame, windings are fitted onto the core. The core 10 is composed of silicon steel sheets stacked one by one. Figure 1 The perspective view shown in the figure depicts the assembled state of the core of the modular combined power transformer according to the present invention. Similar in appearance to a conventional core, the core 10 according to the present invention also includes core posts for housing coil windings, and yokes that connect the core posts without housing windings to form a closed magnetic circuit. The main difference between the core 10 according to the present invention and a conventional core is that the various parts constituting the core 10 can be manufactured as modular components, allowing for free assembly and disassembly of each component according to actual needs, thus forming a modular combined power transformer.

[0063] Next, we will refer to Figure 2 The modular components of the core of the modular combined power transformer according to the present invention are described in detail. Figure 2 A perspective view of the core of a modular combined power transformer according to the present invention in its separated state is shown. (See attached image.) Figure 2 In the diagram, the x-axis is perpendicular to the paper, the y-axis is in the paper and perpendicular to the x-axis, and the z-axis is in the paper and perpendicular to both the x-axis and y-axis. The z-axis represents the longitudinal direction of the iron core.

[0064] like Figure 2 As shown, the iron core 10 may include:

[0065] The U-shaped fixing body includes a fixing lower yoke 102, a first core post 104, and a second core post 106, wherein the fixing lower yoke 102, the first core post 104, and the second core post 106 are fixed to each other to form a U-shape, and the longitudinal direction of the first core post 104 (i.e., attached) Figure 2 The z-axis direction in the middle) and the longitudinal direction of the second core (i.e., the attached) Figure 2 The first core post 104 and the second core post 106 are respectively positioned in the extension direction of the fixed lower yoke 102 (i.e., along the z-axis direction) and are parallel to each other. Figure 2 The two ends of the y-axis direction in the image;

[0066] The first movable upper yoke 108, the direction of extension of the first movable upper yoke 108 (i.e., attached) Figure 2The two ends of the core (in the y-axis direction) are respectively connected to the open end of the first core post 104 and the open end of the second core post 106, so as to be detachably connected to the U-shaped fixed body;

[0067] The second movable upper yoke 110, the second movable upper yoke 110 and the first movable upper yoke 108 extend in their respective directions (i.e., attached) Figure 2 They are tied together in a manner parallel to each other (in the y-axis direction), and in the longitudinal direction of the iron core (i.e., attached). Figure 2 (in the z-axis direction), the second movable upper yoke 110 is located above the first movable upper yoke 108;

[0068] The movable lower yoke 112 and the fixed lower yoke 102 extend in their respective directions (i.e., attached). Figure 2 They are tied together in a manner parallel to each other (in the y-axis direction), and in the longitudinal direction of the iron core, the movable lower yoke 112 is located above the fixed lower yoke 102.

[0069] The first movable side post 114 and the second movable side post 116 are each tied together with the U-shaped fixed body.

[0070] To meet the requirements of low loss and high efficiency of the transformer, the U-shaped fixed body composed of the fixed lower yoke 102, the first core post 104, and the second core post 106 is formed as a fixed, non-detachable unit. Furthermore, the first movable upper yoke 108 can be connected to the U-shaped fixed body via a plug-in connection, facilitating both connection and separation. Additionally, the first movable upper yoke 108 and the second movable upper yoke 110, as well as the fixed lower yoke 102 and the movable lower yoke 112, can be bound together using adhesive tape. Similarly, structures such as screw clamping or semi-dry, non-woven adhesive tape can be used to bind each of the first movable side post 114 and the second movable side post 116 to the U-shaped fixed body.

[0071] Figure 3 A plan view of the core of a modular combined power transformer according to the present invention in its separated state is shown. Figure 3 In, with Figure 2 The same components are indicated by the same reference symbols. Figure 4 Cross-sectional views of various parts of the core of a modular combined power transformer according to the present invention are shown. Among them, Figure 4 It shows along Figure 3 The diagram shows the cross-sections of lines AA, BB, CC, DD, and EE. Figure 4 In (A), it is shown that alongFigure 3 A-A line shown in FIG. 1. As Figure 4 (A) of FIG. 1, the first core column 104 and the second core column 106 each have a circular shape in cross section in the x-y plane. Further, the first core column 104 and the second core column 106 each can have a rectangular shape or other shape in cross section in the x-y plane, as needed. In Figure 4 (B) of FIG. 1, a schematic view of a cross section taken along Figure 3 B-B line shown in FIG. 1. As Figure 4 (B) of FIG. 1, the first movable upper yoke 108, the second core column 106, and the fixed lower yoke 102 each have a rectangular shape in cross section in the x-z plane. The first movable upper yoke 108, the second core column 106, and the fixed lower yoke 102 each have a multi-stage shape matching each other. In Figure 4 (C) of FIG. 1, a schematic view of a cross section taken along Figure 3 C-C line shown in FIG. 1. As Figure 4 (C) of FIG. 1, the first movable upper yoke 108 and the fixed lower yoke 102 each have a semi-circular shape in cross section in the x-z plane. That is, the first movable upper yoke 108 and the fixed lower yoke 102 each have a shape in cross section in the x-z plane that exceeds the position of the center of a circle and an area that exceeds 1 / 2 of the area of a full circle. In Figure 4 (D) of FIG. 1, a schematic view of a cross section taken along Figure 3 D-D line shown in FIG. 1. As Figure 4 (D) of FIG. 1, the first movable side column 114 and the second movable side column 116 each have a circular shape in cross section in the x-y plane. In Figure 4 (E) of FIG. 1, a schematic view of a cross section taken along Figure 4 E-E line shown in FIG. 1. As Figure 5 (E) of FIG. 1, the second movable upper yoke 110 and the movable lower yoke 112 each have a semi-circular shape in cross section in the x-z plane. That is, the second movable upper yoke 110 and the movable lower yoke 112 each have a shape in cross section in the x-z plane that does not exceed the position of the center of a circle and an area that is less than 1 / 2 of the area of a full circle. As Figure 5 (A) and (D) of FIG. 1, the cross section of the first movable side column 114 forms a full circle together with the cross section of the first core column 104 of the U-shaped fixed body, and the cross section of the second movable side column 116 forms a full circle together with the cross section of the second core column 106 of the U-shaped fixed body. As Figure 5As is apparent from (C) and (E) in FIG. 10, in the x-z direction, the cross section of the first movable upper yoke 108 and the cross section of the second movable upper yoke 110 together form a full circle, and the cross section of the fixed lower yoke 102 and the cross section of the movable lower yoke 112 together form a full circle. In order to increase the total magnetic flux within the core, the cross section of the first movable upper yoke 108 is a more-than-half circle, and the cross section of the second movable upper yoke 110 is a less-than-half circle. Depending on the actual needs, the proportions and shapes of the cross sections can be adjusted, for example, the cross section of the first movable upper yoke 108 is a less-than-half circle, and the cross section of the second movable upper yoke 110 is a more-than-half circle. Further, the cross section of the first movable upper yoke 108 is a rectangle or other shape, and the cross section of the second movable upper yoke 110 is a rectangle or other shape.

[0072] Figure 5 A schematic diagram of the core type of the modular combined power transformer according to the present application is shown. Figure 5 The core 502 shown in (A) in FIG. 5 is a 1 / 2 type core, in which the number of core legs with coil windings is 1, and the number of side legs without coil windings is 2, and the 1 / 2 type core includes a first U-shaped fixed body, a second U-shaped fixed body, a first first movable upper yoke, and a second first movable upper yoke, in which the second core leg of the first U-shaped fixed body and the first core leg of the second U-shaped fixed body are tied together, the first first movable upper yoke is connected to the first U-shaped fixed body in a detachable manner, and the second first movable upper yoke is connected to the second U-shaped fixed body in a detachable manner. In this way, in the case where it is necessary to change the type of the core to a 1 / 2 type core, the type of the core can be changed by two U-shaped fixed bodies and two first movable upper yokes, thereby reducing the manufacturing cost.

[0073] Figure 5The iron core 504 shown in (B) in FIG. 4 is a 2 / 2 type iron core in which the number of core legs on which coil windings are fitted is 2 and the number of side legs on which coil windings are not fitted is 2, and the 2 / 2 type iron core includes a first U-shaped fixed body, a second U-shaped fixed body, a third U-shaped fixed body, a first movable upper yoke, a second movable upper yoke, and a third movable upper yoke, in which the second core leg of the first U-shaped fixed body is tied together with the first core leg of the second U-shaped fixed body, the second core leg of the second U-shaped fixed body is tied together with the first core leg of the third U-shaped fixed body, the first movable upper yoke is detachably coupled to the first U-shaped fixed body, the second movable upper yoke is detachably coupled to the second U-shaped fixed body, and the third movable upper yoke is detachably coupled to the third U-shaped fixed body. In this way, in the case where it is necessary to change the type of the iron core to a 2 / 2 type iron core, the type of the iron core can be changed by the three U-shaped fixed bodies and the three movable upper yokes, thereby reducing manufacturing costs.

[0074] Figure 5 The iron core 506 shown in (C) in FIG. 4 is a 1 / 1 type iron core or a 2 / 0 type iron core in which the number of core legs on which coil windings are fitted is 1 and the number of side legs on which coil windings are not fitted is 1, or in which the number of core legs on which coils are fitted is 2 and the number of side legs on which coils are not fitted is 0, and the 1 / 1 type iron core or the 2 / 0 type iron core includes a U-shaped fixed body, a first movable upper yoke, a second movable upper yoke, a movable lower yoke, a first movable side leg, and a second movable side leg, in which the first movable side leg is tied together with the first core leg of the U-shaped fixed body in such a way that the respective longitudinal directions thereof are parallel to each other, the second movable side leg is tied together with the second core leg of the U-shaped fixed body in such a way that the respective longitudinal directions thereof are parallel to each other, and the U-shaped fixed body is disposed between the first movable side leg and the second movable side leg. In this way, in the case where it is necessary to change the type of the iron core to a 1 / 1 type or a 2 / 0 type, the type of the iron core can be changed by the U-shaped fixed body, the first movable upper yoke, the movable lower yoke, the first movable side leg, and the second movable side leg, thereby reducing manufacturing costs.

[0075] ​The iron core 508 shown in (D) in FIG. 5 is a 3 / 0 type iron core in which the number of core legs on which coil windings are fitted is 3 and the number of side legs on which coil windings are not fitted is 0. The 3 / 0 type iron core includes a first U-shaped fixed body, a second U-shaped fixed body, a first first movable upper yoke and a second first movable upper yoke, a first second movable upper yoke and a second second movable upper yoke, a first movable lower yoke, a second movable lower yoke, a first movable side leg, and a second movable side leg. The second core leg of the first U-shaped fixed body is tied together with the first core leg of the second U-shaped fixed body. The first first movable upper yoke is detachably coupled to the first U-shaped fixed body. The second first movable upper yoke is detachably coupled to the second U-shaped fixed body. The first movable lower yoke is tied together with the fixed lower yoke of the first U-shaped fixed body. The second movable lower yoke is tied together with the fixed lower yoke of the second U-shaped fixed body. The first movable side leg is tied together with the first core leg of the first U-shaped fixed body in such a manner that the respective longitudinal directions thereof are parallel to each other. The second movable side leg is tied together with the second core leg of the second U-shaped fixed body in such a manner that the respective longitudinal directions thereof are parallel to each other. The first U-shaped fixed body and the second U-shaped fixed body are disposed between the first movable side leg and the second movable side leg.

[0076] ​ The iron core 510 shown in (E) in FIG. 5 is a 3 / 2 type iron core in which the number of core legs on which coil windings are fitted is 3 and the number of side legs on which coil windings are not fitted is 2. The 3 / 2 type iron core includes a first U-shaped fixed body, a second U-shaped fixed body, a third U-shaped fixed body, a fourth U-shaped fixed body, a first first movable upper yoke, a second first movable upper yoke, a third first movable upper yoke, and a fourth first movable upper yoke. The second core leg of the first U-shaped fixed body is tied together with the first core leg of the second U-shaped fixed body. The second core leg of the second U-shaped fixed body is tied together with the first core leg of the third U-shaped fixed body. The second core leg of the third U-shaped fixed body is tied together with the first core leg of the fourth U-shaped fixed body. The first first movable upper yoke is detachably coupled to the first U-shaped fixed body. The second first movable upper yoke is detachably coupled to the second U-shaped fixed body. The third first movable upper yoke is detachably coupled to the third U-shaped fixed body. The fourth first movable upper yoke is detachably coupled to the fourth U-shaped fixed body. In this manner, in the case where it is necessary to change the type of the iron core to a 3 / 2 type iron core, the type of the iron core can be changed by the four U-shaped fixed bodies and the four first movable upper yokes, thereby reducing manufacturing costs.

[0077] In the most preferred mode, the present application is implemented to solve the problem of the fixed structure of the transformer in the prior art, which cannot adapt to repeated debugging and replacement.

[0078] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0079] 1. The modules can be combined and transformed, and reuse is achieved;

[0080] 2. The full series of transformer cores only need 4 U-shaped fixed bodies, 4 movable upper yokes, 4 movable lower yokes, and 2 movable side columns;

[0081] 3. Compared with manufacturing full series cores, manufacturing costs and time can be saved;

[0082] 4. It is suitable for use as a prototype for the research and development process and testing;

[0083] 5. It can be assembled on site as needed to assemble the transformer.

[0084] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A modular combined power transformer, comprising an iron core and coil windings, wherein the iron core is assembled piece by piece from silicon steel sheets, and the iron core includes: The U-shaped fixed body includes a fixed lower yoke, a first core post, and a second core post. The fixed lower yoke, the first core post, and the second core post are fixed to each other to form a U-shape. The first core post and the second core post are parallel to each other along a first direction of the iron core. The first core post and the second core post are perpendicular to the fixed lower yoke. The first core post and the second core post are respectively disposed at both ends of the fixed lower yoke. A first movable upper yoke, along the second direction of the iron core, has its two ends connected to the open ends of the first core post and the second core post, respectively, thereby detachably connecting to the U-shaped fixed body. The first direction of the iron core is perpendicular to the second direction of the iron core. The core also includes a second movable upper yoke, which is tied together with the first movable upper yoke in a parallel manner. In the first direction of the core, the second movable upper yoke is positioned above the first movable upper yoke, such that the first movable upper yoke is closer to the first core post and the second core post. The core is characterized in that it further includes a movable lower yoke, which is tied together with the fixed lower yoke in a parallel manner, and in the first direction of the core, the movable lower yoke is located below the fixed lower yoke such that the fixed lower yoke is closer to the first core post and the second core post.

2. The modular combined power transformer according to claim 1, characterized in that, The iron core also includes a first movable side post and a second movable side post, each of which is tied together with the U-shaped fixed body.

3. The modular combined power transformer according to claim 2, characterized in that, The iron core is a 1 / 1 type iron core or a 2 / 0 type iron core. In the 1 / 1 type iron core, the number of core posts with coil windings is 1, and the number of side posts without coil windings is 1. In the 2 / 0 type iron core, the number of core posts with coil windings is 2, and the number of side posts without coil windings is 0. The 1 / 1 type iron core or the 2 / 0 type iron core includes a U-shaped fixed body, a first movable upper yoke, a second movable upper yoke, a movable lower yoke, a first movable side post, and a second movable side post. The first movable side post is tied to the first core post of the U-shaped fixed body in a parallel manner, and the second movable side post is tied to the second core post of the U-shaped fixed body in a parallel manner. The U-shaped fixed body is placed between the first movable side post and the second movable side post.

4. The modular combined power transformer according to claim 2, characterized in that, The core is a 3 / 0 type core. In this 3 / 0 type core, the number of core posts with coil windings is 3, and the number of side posts without coil windings is 0. The 3 / 0 type core includes two U-shaped fixed bodies, two first movable upper yokes, two second movable upper yokes, two movable lower yokes, a first movable side post, and a second movable side post. The second core post of the first U-shaped fixed body is bound together with the first core post of the second U-shaped fixed body. The first first movable upper yoke is detachably connected to the first U-shaped fixed body, and the second first movable upper yoke is detachably connected to the second U-shaped fixed body. The first second movable upper yoke... The yoke is tied to the first first movable upper yoke in a parallel manner. The second second movable upper yoke of the two second movable upper yokes is tied to the second first movable upper yoke in a parallel manner. The first movable lower yoke of the two movable lower yokes is tied to the fixed lower yoke of the first U-shaped fixed body in a parallel manner. The second movable lower yoke of the two movable lower yokes is tied to the fixed lower yoke of the second U-shaped fixed body in a parallel manner. The first movable side post is tied to the first core post of the first U-shaped fixed body in a parallel manner. The second movable side post is tied to the second core post of the second U-shaped fixed body in a parallel manner. The first U-shaped fixed body and the second U-shaped fixed body are placed between the first movable side post and the second movable side post.

5. The modular combined power transformer according to claim 1, characterized in that, On a cross section taken along the first direction parallel to the iron core and perpendicular to the second direction, the cross-sectional shape of the first movable upper yoke and the cross-sectional shape of the second movable upper yoke are formed as a complete circle.

6. The modular combined power transformer according to claim 5, characterized in that, In the complete circle, the cross section of the first movable upper yoke is a semicircle, and the cross section of the second movable upper yoke is a semicircle.

7. The modular combined power transformer according to claim 1, characterized in that, On a cross-section taken along the first direction parallel to the iron core and perpendicular to the second direction, the cross-sectional shape of the movable lower yoke and the cross-sectional shape of the fixed lower yoke are formed as a complete circle.

8. The modular combined power transformer according to claim 7, characterized in that, In the complete circle, the cross section of the fixed lower yoke is a semicircle, and the cross section of the movable lower yoke is a semicircle.

9. The modular combined power transformer according to claim 3, characterized in that, On a cross section taken along the second direction parallel to the iron core and perpendicular to the first direction, the cross-sectional shape of the first movable side post and the cross-sectional shape of the first core post of the U-shaped fixed body are formed into a complete circle, and the cross-sectional shape of the second movable side post and the cross-sectional shape of the second core post of the U-shaped fixed body are formed into a complete circle.

10. The modular combined power transformer according to claim 4, characterized in that, On a cross section taken along the second direction parallel to the iron core and perpendicular to the first direction, the cross-sectional shape of the first movable side post and the cross-sectional shape of the first core post of the first U-shaped fixed body are formed to form a complete circle, and the cross-sectional shape of the second movable side post and the cross-sectional shape of the second core post of the second U-shaped fixed body are formed to form a complete circle.

Images