CN221057251U - High-voltage coil module and dual-voltage dry-type transformer - Google Patents

Abstract

The utility model provides a high-voltage coil module and a dual-voltage dry-type transformer, wherein the high-voltage coil module comprises a shell and a high-voltage coil group, and the first sub-coil group and the second sub-coil group can be connected in series or in parallel by changing the connection mode of an access terminal and an exit terminal of a plurality of first sub-coil groups and second sub-coil groups in the high-voltage coil group, so that when the high-voltage coil group is sleeved on a core of the dry-type transformer through a mounting hole of the shell, the serial connection or the parallel connection of the plurality of first sub-coil groups and the second sub-coil groups can be utilized to directly enable the dry-type transformer to output or input two different voltages without arranging two independent transformers, thereby saving cost and being convenient to operate.

Description

High-voltage coil module and dual-voltage dry-type transformer

Technical Field

The application relates to the technical field of transformers, in particular to a high-voltage coil module and a dual-voltage dry-type transformer.

Background

The transformer is a device for changing ac voltage by using electromagnetic induction principle, and its main functions include voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization, etc. A dual voltage transformer refers to a transformer capable of achieving two different voltage outputs.

In the prior art, one transformer usually corresponds to input and output of one voltage class, and in some application scenarios, two different classes of voltages may need to be input or output, in which case, a user needs to add one transformer, and two transformers respectively input or output different classes of voltages, which is costly.

Disclosure of utility model

In order to solve the above-mentioned problems, an embodiment of the present application provides a high-voltage coil module and a dual-voltage dry-type transformer to at least partially solve the above-mentioned problems.

According to a first aspect of an embodiment of the present application, there is provided a high-voltage coil module including a housing, a high-voltage coil assembly, and a connecting member, the housing being provided with a mounting hole through which the housing is sleeved on a core of a dry-type transformer; the high-voltage coil group is arranged in the shell and comprises a plurality of adjacent first sub-coil groups and second sub-coil groups, the first sub-coil groups and the second sub-coil groups are hollow columnar coils, the central axis directions of the first sub-coil groups and the second sub-coil groups are on the same straight line, the first sub-coil groups and the second sub-coil groups comprise an access end terminal and an access end terminal, and the access end terminal of the first sub-coil groups is connected with the access end terminal of the second sub-coil groups along the central axis direction so as to connect the first sub-coil groups and the second sub-coil groups in series; or the first sub-coil group is connected with the access terminal of the second sub-coil group, and the first sub-coil group is connected with the access terminal of the second sub-coil group so as to connect the first sub-coil group and the second sub-coil group in parallel; the connecting piece includes series connection piece and parallel connection piece, and the series connection piece is used for establishing ties first sub-coil group and second sub-coil group, and the parallel connection piece is used for parallelly connecting first sub-coil group and second sub-coil group.

In an alternative implementation, the number of turns of the first and second sub-coil sets is equal.

In an alternative implementation manner, the shell comprises a first outer surface and a second outer surface, the access terminal and the connection terminal of the first sub-coil group and the second sub-coil group are both arranged on the first outer surface of the shell, the pressure regulating joint is arranged on the first sub-coil group and the second sub-coil group, and the pressure regulating joint is arranged on the second outer surface of the shell, and the second outer surface is opposite to the first outer surface.

In an alternative implementation, the number of voltage regulating connectors provided on the first sub-coil assembly is equal to the number of voltage regulating connectors provided on the second sub-coil assembly.

In an alternative implementation, on the first outer surface, the access terminals of the first sub-coil group and the second sub-coil group are arranged in a first straight line direction, the access terminals of the first sub-coil group and the second sub-coil group are arranged in a second straight line direction, the first straight line direction and the second straight line direction are parallel to the central axis direction, and the first straight line direction and the second straight line direction are not coincident.

In an alternative implementation, the access terminal of the first sub-coil group is located away from the access terminal of the second sub-coil group in the direction of the central axis on the first outer surface, and the access terminal of the first sub-coil group is located close to the access terminal of the second sub-coil group.

In an alternative implementation, the first outer surface and the second outer surface are both parallel to the axis of the mounting hole.

In an alternative implementation, a protective layer formed by an insulating material through a molding process is arranged between the first sub-coil group, the second sub-coil group and the shell.

In an alternative implementation manner, a first connecting terminal and a second connecting terminal are arranged on the first outer surface, the first connecting terminal is connected with an access terminal positioned at one end of the central axis direction along the central axis direction, and the second connecting terminal is connected with an output terminal positioned at the other end of the central axis direction.

In an alternative implementation, the series connection comprises a plurality of first wire conduits and the parallel connection comprises a plurality of second wire conduits, the length of the first wire conduits being less than the length of the second wire conduits.

According to a second aspect of the embodiment of the present application, there is provided a dual-voltage dry-type transformer, including the high-voltage coil module, the low-voltage coil module and the core as described in the first aspect, wherein the high-voltage coil module and the low-voltage coil module are respectively sleeved on the core, and if the high-voltage coil module is an input side of the dual-voltage dry-type transformer, a plurality of adjacent first sub-coil groups and second sub-coil groups in the high-voltage coil module are connected in series to enable the high-voltage coil module to input a first voltage, and the first sub-coil groups and the second sub-coil groups are connected in parallel to enable the high-voltage coil module to input a second voltage different from the first voltage; or if the high-voltage coil module is an output side of the dual-voltage dry-type transformer, the first sub-coil set and the second sub-coil set are connected in series to enable the high-voltage coil module to output a third voltage, and the first sub-coil set and the second sub-coil set are connected in parallel to enable the high-voltage coil module to output a fourth voltage different from the third voltage.

In an alternative implementation manner, the high-voltage coil set comprises three adjacent first sub-coil sets and second sub-coil sets, and if the high-voltage coil set is an input side of the dual-voltage dry-type transformer and the output voltage of the dual-voltage dry-type transformer is unchanged, the voltage ratio of the first voltage to the second voltage is 3:1; or if the high-voltage coil module is an output side of the dual-voltage dry-type transformer, and the input voltage of the dual-voltage dry-type transformer is unchanged, the voltage ratio of the third voltage to the fourth voltage is 3:1.

The application provides a high-voltage coil module and a dual-voltage dry-type transformer, wherein the high-voltage coil module comprises a shell, a high-voltage coil assembly and a connecting piece, wherein the shell is provided with a mounting hole, and the shell is sleeved on a core of the dry-type transformer through the mounting hole; the high-voltage coil group is arranged in the shell and comprises a plurality of adjacent first sub-coil groups and second sub-coil groups, the first sub-coil groups and the second sub-coil groups are hollow columnar coils, the central axis directions of the first sub-coil groups and the second sub-coil groups are on the same straight line, the first sub-coil groups and the second sub-coil groups comprise an access end terminal and an access end terminal, and the access end terminal of the first sub-coil groups is connected with the access end terminal of the second sub-coil groups along the central axis direction so as to connect the first sub-coil groups and the second sub-coil groups in series; or the first sub-coil group is connected with the access terminal of the second sub-coil group, and the first sub-coil group is connected with the access terminal of the second sub-coil group so as to connect the first sub-coil group and the second sub-coil group in parallel; the connecting piece includes series connection piece and parallel connection piece, and the series connection piece is used for establishing ties first sub-coil group and second sub-coil group, and the parallel connection piece is used for parallelly connecting first sub-coil group and second sub-coil group. According to the embodiment of the application, the first sub-coil group and the second sub-coil group can be connected in series or in parallel by changing the connection mode of the access terminal and the access terminal, so that when the high-voltage coil group is sleeved on the core of the dry-type transformer through the mounting hole of the shell, the dry-type transformer can directly output or input two different voltages by utilizing the series connection or the parallel connection of a plurality of the first sub-coil groups and the second sub-coil groups, and two independent transformers are not required to be arranged, thereby saving the cost and being convenient to operate.

Drawings

Fig. 1 is a schematic view illustrating an internal structure of a high voltage coil module according to an exemplary embodiment of the present application;

fig. 2 is a schematic distribution diagram of an access terminal and an access terminal of a high voltage coil module according to an exemplary embodiment of the present application;

fig. 3 is a schematic diagram illustrating a first connection mode of a high voltage coil module according to an exemplary embodiment of the present application;

fig. 4 is a schematic diagram of a second connection mode of the high voltage coil module according to the exemplary embodiment of the present application;

Fig. 5 is a schematic view of a second outer surface of a high voltage coil module according to an exemplary embodiment of the present application;

Fig. 6 is a top view of a high voltage coil module according to an exemplary embodiment of the present application;

FIG. 7 is a partial schematic view of the pressure regulating joint of FIG. 1A according to the present application;

List of reference numerals:

11. A housing; 111. a mounting hole; 112. a first outer surface; 1121. a first connection terminal; 1122. a second connection terminal; 113. a second outer surface; 121. a first sub-coil group; 122. a second sub-coil group; 123. a pressure regulating joint; 124. an access terminal; 125. a terminal of the output end; 131. a series connection; 132. and a parallel connection member.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Before explaining the high-voltage coil module and the dual-voltage dry-type transformer, application scenes of the high-voltage coil module and the dual-voltage dry-type transformer are briefly described so as to facilitate understanding.

The transformer is a device for changing ac voltage by using electromagnetic induction principle, and its main functions include voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization, etc. A dual voltage transformer refers to a transformer capable of achieving two different voltage outputs.

In the prior art, one transformer usually corresponds to input and output of one voltage class, and in some application scenarios, two different classes of voltages may need to be input or output, in which case, a user needs to add one transformer, and two transformers respectively input or output different classes of voltages, which is costly. Accordingly, the present application provides a high-voltage coil module and a dual-voltage dry-type transformer, which can solve the above-mentioned problems in the prior art.

Specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 6, the present embodiment provides a high voltage coil module, which may include a housing 11, a high voltage coil group, and a connection member.

Wherein, the shell 11 is provided with a mounting hole 111, and the shell 11 is sleeved on the core of the dry-type transformer through the mounting hole 111. Illustratively, the material of the case 11 may be steel, the case 11 may be in a cylindrical shape with a mounting hole 111 provided in the middle, the axis of the mounting hole 111 being coaxial with the axis of the cylindrical case 11 and with the central axes (dotted lines shown in fig. 2, 3 and 4) of the first and second sub-coil groups 121 and 122, the diameter of the mounting hole 111 may be determined according to the size of the core of the dry type transformer, and when the high voltage coil module needs to be mounted on the core of the dry type transformer, the case 11 is sleeved on the core of the dry type transformer through the mounting hole 111.

The high-voltage coil assembly is disposed in the case 11, and includes a plurality of adjacent first and second sub-coil assemblies 121 and 122, the first and second sub-coil assemblies 121 and 122 are hollow cylindrical coils, central axis directions of the first and second sub-coil assemblies 121 and 122 are on the same straight line, the first and second sub-coil assemblies 121 and 122 each include an access terminal 124 and an exit terminal 125, and the exit terminal 125 of the first sub-coil assembly 121 is connected with the access terminal 124 of the second sub-coil assembly 122 in the central axis direction to connect the first and second sub-coil assemblies 121 and 122 in series, or the access terminal 124 of the first and second sub-coil assemblies 121 and 122 are connected, and the access terminal 125 of the first and second sub-coil assemblies 121 and 122 are connected in parallel.

Illustratively, referring to fig. 1, the high-voltage coil assembly includes a plurality of adjacent first and second sub-coil assemblies 121 and 122, each of the first and second sub-coil assemblies 121 and 122 is a hollow cylindrical coil, central axes of the first and second sub-coil assemblies 121 and 122 are aligned, the plurality of adjacent first and second sub-coil assemblies 121 and 122 are sequentially sleeved in the case 11, central axes of the first and second sub-coil assemblies 121 and 122 coincide with an axis of the mounting hole 111, the first and second sub-coil assemblies 121 and 122 may include an access terminal 124 and an access terminal 125, the access terminal 124 and the access terminal 125 protrude from the case 11 and may be disposed convexly from the first outer surface 112 of the case 11, and referring to fig. 3, the access terminal 124 of the first and second sub-coil assemblies 121 and 122 are connected in series along the central axes (dotted lines shown in fig. 2, 3 and 4) direction of the first and second sub-coil assemblies 121; alternatively, referring to fig. 4, the first sub-coil group 121 and the second sub-coil group 122 may be connected in parallel, with the access terminal 124 of the first sub-coil group 121 and the access terminal 124 of the second sub-coil group 122 being connected, and the access terminal 125 of the first sub-coil group 121 and the access terminal 125 of the second sub-coil group 122 being connected.

The connection members include a series connection member 131 for connecting the first and second sub-coil groups 121 and 122 in series, and a parallel connection member 132 for connecting the first and second sub-coil groups 121 and 122 in parallel. Illustratively, the serial connection 131 may be detachably connected with the access terminal 124 and the output terminal 125, and the parallel connection 132 may be detachably connected with the access terminal 124 and the output terminal 125. The first sub-coil group 121 and the second sub-coil group 122 may be connected in series by connecting the output terminal 125 of the first sub-coil group 121 with the input terminal 124 of the second sub-coil group 122 through the series connection member 131. The first and second sub-coil groups 121 and 122 may be connected in parallel by connecting the access terminal 124 of the first and second sub-coil groups 121 and 122 through the parallel connection member 132 and connecting the access terminal 125 of the first and second sub-coil groups 121 and 122. The connecting piece can be a conductive connecting pipe, the connecting piece can be connected with the access terminal 124 and the output terminal 125 through bolts, and the conductive connecting pipe can be a long copper pipe, so that the conductive performance is good, and the cost is low.

In an alternative implementation, the series connection 131 includes a plurality of first wire conduits and the parallel connection 132 includes a plurality of second wire conduits, the first wire conduits having a length less than a length of the second wire conduits. As an example, referring to fig. 3 and 4, the series connection member 131 includes two first connection pipes, and the first sub-coil group 121 and the second sub-coil group 122 may be connected in series by connecting the output terminal 125 of the first sub-coil group 121 and the input terminal 124 of the second sub-coil group 122 through the first connection pipes, respectively. The parallel connection member 132 includes two second wire pipes, and connects the first sub-coil group 121 and the second sub-coil group 122 through the connection terminal 124 of the first sub-coil group 121 and the connection terminal 125 of the second sub-coil group 122, respectively, so that the first sub-coil group 121 and the second sub-coil group 122 can be connected in parallel. According to the arrangement of the access terminal 124 and the access terminal 125 of the present embodiment, the length of the first wire connection tube of the present embodiment is smaller than the length of the second wire connection tube. The number of the first and second wire pipes may be determined according to the number of the first and second sub-coil groups 121 and 122, and the lengths of the first and second wire pipes may be determined according to the arrangement of the access terminal 124 and the exit terminal 125, which is not limited in this embodiment. In this implementation manner, a plurality of first wire connection pipes and a plurality of second wire connection pipes are arranged, and the length of the first wire connection pipe is smaller than that of the second wire connection pipe, so that the first sub-coil assembly 121 and the second sub-coil assembly 122 are connected in series and parallel conveniently, and the disconnection manner is simple and the cost is lower.

The high-voltage coil module of the embodiment comprises a shell 11, a high-voltage coil group and a connecting piece, wherein a mounting hole 111 is formed in the shell 11, and the shell 11 is sleeved on a core of the dry-type transformer through the mounting hole 111; the high-voltage coil assembly is arranged in the shell 11, the high-voltage coil assembly comprises a plurality of adjacent first sub-coil assemblies 121 and second sub-coil assemblies 122, the first sub-coil assemblies 121 and the second sub-coil assemblies 122 are hollow cylindrical coils, the central axis directions of the first sub-coil assemblies 121 and the second sub-coil assemblies 122 are on the same straight line, the first sub-coil assemblies 121 and the second sub-coil assemblies 122 comprise an access end terminal 124 and an access end terminal 125, and the access end terminal 125 of the first sub-coil assemblies 121 is connected with the access end terminal 124 of the second sub-coil assemblies 122 along the central axis direction so as to connect the first sub-coil assemblies 121 and the second sub-coil assemblies 122 in series; or the first sub-coil group 121 and the second sub-coil group 122 are connected at the access terminal 124, and the first sub-coil group 121 and the second sub-coil group 122 are connected at the access terminal 125, so as to connect the first sub-coil group 121 and the second sub-coil group 122 in parallel; the connection members include a series connection member 131 for connecting the first and second sub-coil groups 121 and 122 in series, and a parallel connection member 132 for connecting the first and second sub-coil groups 121 and 122 in parallel. In the embodiment of the present application, by changing the connection manner of the access terminal 124 and the access terminal 125, the plurality of first sub-coil groups 121 and the plurality of second sub-coil groups 122 may be connected in series or in parallel, so that when the high-voltage coil groups are sleeved on the core of the dry-type transformer through the mounting hole 111 of the housing 11, the dry-type transformer may be directly enabled to output or input two different voltages by using the plurality of first sub-coil groups 121 and the plurality of second sub-coil groups 122 in series or in parallel, without providing two separate transformers, thereby saving cost and being convenient to operate.

In an alternative implementation, the number of turns of the first and second sub-coil sets 121, 122 is equal. For example, referring to fig. 1, when the number of turns of the first sub-coil group 121 and the second sub-coil group 122 is equal, after the first sub-coil group 121 and the second sub-coil group 122 are sleeved on the core of the dry-type transformer, when the dry-type transformer is connected to a circuit, under the condition that the connection relation of the plurality of first sub-coil groups 121 and the second sub-coil groups 122 is only changed without changing other conditions, the voltage which can be input or output by the dry-type transformer is a multiple of the voltage level which is output or input when the first sub-coil group 121 and the second sub-coil group 122 are connected in parallel according to the number of the first sub-coil group 121 and the second sub-coil group 122.

In an alternative implementation manner, the housing 11 includes a first outer surface 112 and a second outer surface 113, the access terminal 124 and the output terminal 125 of the first sub-coil group 121 and the second sub-coil group 122 are disposed on the first outer surface 112 of the housing 11, the pressure regulating connector 123 is disposed on the first sub-coil group 121 and the second sub-coil group 122, the pressure regulating connector 123 is disposed on the second outer surface 113 of the housing 11, and the second outer surface 113 is disposed opposite to the first outer surface 112. Illustratively, referring to fig. 1 and 5, the access terminal 124 and the output terminal 125 of the first sub-coil group 121 and the second sub-coil group 122 extend out of the housing 11, and may be disposed on the first outer surface 112 of the housing 11 in a protruding manner, the voltage adjusting connectors 123 are disposed on the first sub-coil group 121 and the second sub-coil group 122, the voltage adjusting connectors 123 extend out of the housing 11, are disposed on the second outer surface 113 of the housing 11, and the second outer surface 113 is disposed opposite to the first outer surface 112 on the housing 11. By setting different connection modes of the voltage regulating connector 123, the number of coil turns of the first sub-coil group 121 and the second sub-coil group 122 can be adjusted to change the magnitude of the input or output voltage. Through the relative setting of second exterior surface 113 and first exterior surface 112 that pressure regulating joint 123 place on casing 11, can be convenient for establish casing 11 cover on the core, if the left and right sides of casing 11 still is provided with other parts, then second exterior surface 113 and first exterior surface 112 that pressure regulating joint 123 place can be located the front and back both sides to dodge, thereby guarantee can conveniently adjust the connected mode of access terminal 124 and connect out terminal 125 and pressure regulating joint 123 simultaneously.

Referring to fig. 7, the first and second sub-coil groups 121 and 122 may be provided with a plurality of voltage regulating joints 123, such as the two voltage regulating joints 123 shown in fig. 7, respectively, and the first group of voltage regulating joints 123 are denoted as T1, T2, and T3, respectively. The second voltage regulating connectors 123 are respectively denoted as T4, T5 and T6, and by changing the connection relationship between the first voltage regulating connector 123 and the second voltage regulating connector 123, the connection relationship between the coils in the first sub-coil set 121 or the second sub-coil set 122 can be adjusted, so as to adjust the voltages input or output by the dry-type transformer in which the first sub-coil set 121 and the second sub-coil set 122 are located, for example, the two voltage regulating connectors 123 in fig. 7 may have the following nine connection modes: the nine different voltages can be obtained according to the above different connection modes, namely, the T1 and T4 connection, the T2 and T4 connection, the T3 and T4 connection, the T1 and T5 connection, the T2 and T5 connection, the T3 and T5 connection, the T1 and T6 connection, the T2 and T6 connection and the T3 and T6 connection.

In an alternative implementation, the number of voltage regulating joints 123 provided on the first sub-coil assembly 121 is equal to the number of voltage regulating joints 123 provided on the second sub-coil assembly 122. For example, referring to fig. 1 and 5, the number of voltage-adjusting joints 123 provided on the first sub-coil group 121 and the second sub-coil group 122 is equal, and the number of voltage-adjusting joints 123 may be flexibly set according to actual needs, which is not limited in this embodiment. The greater the number of voltage regulating connections 123 provided, the more gears are regulated for the voltage output or input. By setting the number of the voltage regulating joints 123 of the first sub-coil group 121 and the second sub-coil group 122 to be equal, the coil turns of the first sub-coil group 121 and the second sub-coil group 122 can be ensured to be adjusted uniformly, so that the output or input voltage can be conveniently controlled.

In an alternative implementation, both the first outer surface 112 and the second outer surface 113 are parallel to the axis of the mounting hole 111. Illustratively, referring to fig. 2, the first outer surface 112 and the second outer surface 113 are both disposed along with the axis (i.e., central axis) of the mounting hole 111, that is, the first outer surface 112 and the second outer surface 113 are disposed on the side surface of the cylindrical housing 11, and the side surface of the housing 11 may be disposed as a curved surface, wherein the first outer surface 112 and the second outer surface 113 may be disposed as two planes, which is not limited thereto in this embodiment. Through setting up first surface 112 and second surface 113 all parallel with the axis of mounting hole 111, when high-voltage coil module cover is established on dry-type transformer's core, set up the access terminal 124 and the access terminal 125 of first surface 112 and set up the pressure regulating joint 123 of second surface 113 and all be located the side surface of casing 11, and be provided with the surface of mounting hole 111 on the non-casing 11, can guarantee that access terminal 124, access terminal 125 and pressure regulating joint 123 set up the space enough, and can conveniently adjust access terminal 124, access terminal 125 and pressure regulating joint 123's connected mode.

In an alternative implementation, on the first outer surface 112, the access terminals 124 of the first sub-coil group 121 and the second sub-coil group 122 are arranged in a first straight line direction, the access terminals 125 of the first sub-coil group 121 and the second sub-coil group 122 are arranged in a second straight line direction, and the first straight line direction and the second straight line direction are parallel to the central axis direction, and the first straight line direction and the second straight line direction do not coincide. Illustratively, referring to fig. 2, on the first outer surface 112 of the housing 11, the access terminals 124 of the first and second sub-coil groups 121 and 122 are arranged at intervals in a first straight line direction, and the access terminals 125 of the first and second sub-coil groups 121 and 122 are arranged at intervals in a second straight line direction. When the first sub-coil group 121 and the second sub-coil group 122 are connected in parallel, the connection of the connection terminal 124 of the first sub-coil group 121 and the connection terminal 125 of the second sub-coil group 122 and the connection of the connection terminal 125 of the first sub-coil group 121 and the connection terminal 125 of the second sub-coil group 122 are required, and when the connection terminal 125 of the first sub-coil group 121 and the connection terminal 124 of the second sub-coil group 122 are connected in series, the connection terminal 124 is arranged in a first straight line direction and the connection terminal 125 is arranged in a second straight line direction parallel to the central axis direction and not coincident, so that the situation that all the connection terminal 124 and the connection terminal 125 are arranged in a row or the connection terminal 124 and the connection terminal 125 intersect in the first straight line direction can be avoided, and two connection operations of parallel connection or series connection can be simultaneously facilitated without the situation that the arrangement positions of the connection terminal 124 and the connection terminal 125 interfere with each other.

In an alternative implementation, the access terminal 124 of the first sub-coil assembly 121 is located away from the access terminal 124 of the second sub-coil assembly 122 on the first outer surface 112 along the central axis, and the access terminal 125 of the first sub-coil assembly 121 is located near the access terminal 124 of the second sub-coil assembly 122. Illustratively, referring to fig. 2, on the first outer surface 112 of the housing 11, the access terminal 124 of the first sub-coil group 121 and the second sub-coil group 122 are arranged in the first straight line direction, the access terminal 125 of the first sub-coil group 121 and the second sub-coil group 122 are arranged in the second straight line direction, the access terminal 124 of the first sub-coil group 121 is located away from the access terminal 124 of the second sub-coil group 122, and at the same time, the access terminal 125 of the first sub-coil group 121 is located close to the access terminal 124 of the second sub-coil group 122. Because the first sub-coil group 121 and the second sub-coil group 122 are sequentially arranged along the central axis direction, the position of the access terminal 124 of the first sub-coil group 121 is far away from the access terminal 124 of the second sub-coil group 122, and meanwhile, the position of the access terminal 125 of the first sub-coil group 121 is close to the access terminal 124 of the second sub-coil group 122, so that the arrangement positions of the first sub-coil group 121 and the second sub-coil group 122 can be matched, the wiring length of the access terminal 124 and the access terminal 125 for connecting the first sub-coil group 121 and the second sub-coil group 122 is reduced, and the material cost is saved.

In an alternative implementation, the first outer surface 112 is provided with a first connection terminal 1121 and a second connection terminal 1122, and the first connection terminal 1121 is connected to the access terminal 124 located at one end in the central axis direction, and the second connection terminal 1122 is connected to the output terminal 125 located at the other end in the central axis direction. Illustratively, referring to fig. 2, a first connection terminal 1121 and a second connection terminal 1122 are provided on the first outer surface 112, the first connection terminal 1121 and the second connection terminal 1122 serving as input and output terminals, respectively, of the high voltage coil module. The first connection terminal 1121 is connected to the access terminal 124 located at one end in the central axis direction, and the second connection terminal 1122 is connected to the output terminal 125 located at the other end in the central axis direction, that is, the first connection terminal 1121 and the second connection terminal 1122 are connected to the coil groups located at both ends of the high-voltage coil module, respectively. By providing the first and second connection terminals 1121, 1122 on the first outer surface 112, the high voltage coil module is facilitated to be connected into a circuit.

In an alternative implementation, a protective layer formed by a molding process of an insulating material is disposed between the first sub-coil assembly 121, the second sub-coil assembly 122, and the housing 11. Illustratively, the insulating material used for the protective layer may be epoxy resin, and the molding process may be a casting process. The first sub-coil group 121 and the second sub-coil group 122 are poured into the shell 11 through the insulating material of the protective layer, so that the condition that the connection conduction occurs between the plurality of first sub-coil groups 121 and the plurality of second sub-coil groups 122 in the shell 11 is prevented, and the output or input voltage is abnormal, and other electrical equipment connected with the dry-type transformer is damaged.

According to a second aspect of the embodiment of the present application, there is provided a dual-voltage dry-type transformer, including the high-voltage coil module, the low-voltage coil module and the core as described in the first aspect, wherein the high-voltage coil module and the low-voltage coil module are respectively sleeved on the core, and if the high-voltage coil module is an input side of the dual-voltage dry-type transformer, the high-voltage coil module is connected in series to input a first voltage by connecting a plurality of adjacent first sub-coil groups 121 and second sub-coil groups 122 in the high-voltage coil module, and the first sub-coil groups 121 and the second sub-coil groups 122 are connected in parallel to input a second voltage different from the first voltage by connecting the high-voltage coil module; or if the high-voltage coil module is an output side of the dual-voltage dry-type transformer, the first sub-coil set 121 and the second sub-coil set 122 are connected in series to enable the high-voltage coil module to output a third voltage, and the first sub-coil set 121 and the second sub-coil set 122 are connected in parallel to enable the high-voltage coil module to output a fourth voltage different from the third voltage.

Illustratively, the dual-voltage dry-type transformer includes the high-voltage coil module, the low-voltage coil module and the core as described in the above embodiments, the high-voltage coil module and the low-voltage coil module are respectively sleeved on the core, and if the high-voltage coil module is an input side of the dual-voltage dry-type transformer, that is, the dual-voltage dry-type transformer is a step-down transformer, the high-voltage coil module is connected in series by connecting a plurality of adjacent first sub-coil groups 121 and second sub-coil groups 122 in the high-voltage coil module to input a first voltage, and the first sub-coil groups 121 and the second sub-coil groups 122 are connected in parallel to input a second voltage different from the first voltage. Or if the high-voltage coil module is an output side of the dual-voltage dry-type transformer, that is, the dual-voltage dry-type transformer is a step-up transformer, the first sub-coil set 121 and the second sub-coil set 122 are connected in series to make the high-voltage coil module output a third voltage, and the first sub-coil set 121 and the second sub-coil set 122 are connected in parallel to make the high-voltage coil module output a fourth voltage different from the third voltage.

The dual-voltage dry-type transformer of the present embodiment includes the high-voltage coil module, the low-voltage coil group and the core as described in the above embodiments, the high-voltage coil module and the low-voltage coil group are respectively sleeved on the core, if the high-voltage coil module is an input side of the dual-voltage dry-type transformer, the high-voltage coil module is input with a first voltage by connecting a plurality of adjacent first sub-coil groups 121 and second sub-coil groups 122 in series, and the high-voltage coil module is input with a second voltage different from the first voltage by connecting the first sub-coil groups 121 and the second sub-coil groups 122 in parallel; or if the high-voltage coil module is the output side of the dual-voltage dry-type transformer, the first sub-coil set 121 and the second sub-coil set 122 are connected in series to enable the high-voltage coil module to output the third voltage, the first sub-coil set 121 and the second sub-coil set 122 are connected in parallel to enable the high-voltage coil module to output the fourth voltage different from the third voltage, and the series-parallel connection relation of the plurality of first sub-coil sets 121 and the second sub-coil sets 122 in the high-voltage coil module is changed, so that the transformer can directly output or input two different voltages without arranging two independent transformers, the cost is saved, and the operation is convenient.

In an alternative implementation, the high-voltage coil set includes three adjacent first sub-coil sets 121 and second sub-coil sets 122, and if the high-voltage coil set is an input side of the dual-voltage dry-type transformer, and an output voltage of the dual-voltage dry-type transformer is unchanged, a voltage ratio of the first voltage to the second voltage is 3:1, a step of; or if the high-voltage coil module is an output side of the dual-voltage dry-type transformer, and the input voltage of the dual-voltage dry-type transformer is unchanged, the voltage ratio of the third voltage to the fourth voltage is 3:1. illustratively, the high-voltage coil assembly includes three adjacent first sub-coil assemblies 121 and second sub-coil assemblies 122, i.e., three sub-coil assemblies, and the three sub-coil assemblies are adjacent to each other. The number of turns of the first sub-coil set 121 and the second sub-coil set 122 are equal, wherein if the high-voltage coil module is an input side of the dual-voltage dry-type transformer, and the output voltage of the dual-voltage dry-type transformer is unchanged, the voltage ratio of the first voltage to the second voltage is 3:1, a step of; or if the high-voltage coil module is an output side of the dual-voltage dry-type transformer, and the input voltage of the dual-voltage dry-type transformer is unchanged, the voltage ratio of the third voltage to the fourth voltage is 3:1, for example, the second voltage may be 11 kv, the first voltage may be 33 kv, and the voltage ratio of the first voltage to the second voltage may be 3:1. so that the dual-voltage dry-type transformer can input voltages of 11 kv and 33 kv.

It should be noted that not all the steps and modules in the above flowcharts and the system configuration diagrams are necessary, and some steps or modules may be omitted according to actual needs. The execution sequence of the steps is not fixed and can be adjusted as required. The system structure described in the above embodiments may be a physical structure or a logical structure, that is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or may be implemented jointly by some components in multiple independent devices.

While the application has been illustrated and described in detail in the drawings and in the preferred embodiments, the application is not limited to the disclosed embodiments, and it will be appreciated by those skilled in the art that many other embodiments of the application can be made by combining the technical means of the various embodiments described above, which are also within the scope of the application.

Claims (12)

1. A high voltage coil module comprising:

A housing (11), wherein a mounting hole (111) is formed in the housing (11), and the housing (11) is sleeved on the core of the dry-type transformer through the mounting hole (111);

A high voltage coil group disposed within the housing (11), the high voltage coil group including a plurality of adjacent first and second sub-coil groups (121, 122), the first and second sub-coil groups (121, 122) each being hollow cylindrical coils, the central axes of the first and second sub-coil groups (121, 122) being on the same straight line, the first and second sub-coil groups (121, 122) each including an access terminal (124) and an exit terminal (125), the access terminal (125) of the first sub-coil group (121) being connected with the access terminal (124) of the second sub-coil group (122) in the central axis direction to connect the first and second sub-coil groups (121, 122) in series, or the first and second sub-coil groups (121, 122) having the access terminal (124) of the first and second sub-coil groups (121, 122) connected with the first and second sub-coil groups (121, 122) in parallel;

The connecting piece comprises a serial connecting piece (131) and a parallel connecting piece (132), wherein the serial connecting piece (131) is used for connecting the first sub-coil group (121) and the second sub-coil group (122) in series, and the parallel connecting piece (132) is used for connecting the first sub-coil group (121) and the second sub-coil group (122) in parallel.

2. The high voltage coil module as recited in claim 1, wherein the number of coil turns of the first sub-coil group (121) and the second sub-coil group (122) are equal.

3. The high-voltage coil module according to claim 1 or 2, wherein the housing (11) comprises a first outer surface (112) and a second outer surface (113), the access terminal (124) and the outlet terminal (125) of the first sub-coil assembly (121) and the second sub-coil assembly (122) are both disposed on the first outer surface (112) of the housing (11), voltage regulating connectors (123) are both disposed on the first sub-coil assembly (121) and the second sub-coil assembly (122), the voltage regulating connectors (123) are disposed on the second outer surface (113) of the housing (11), and the second outer surface (113) is disposed opposite to the first outer surface (112).

4. A high voltage coil module according to claim 3, characterized in that the number of voltage regulating connections (123) provided on the first sub-coil assembly (121) is equal to the number of voltage regulating connections (123) provided on the second sub-coil assembly (122).

5. A high voltage coil module as claimed in claim 3, characterized in that, on the first outer surface (112), the access terminals (124) of the first and second sub-coil groups (121, 122) are arranged in a first straight direction, the access terminals (125) of the first and second sub-coil groups (121, 122) are arranged in a second straight direction, the first and second straight directions are both parallel to the central axis direction, and the first and second straight directions do not coincide.

6. The high voltage coil module as recited in claim 5, wherein the access terminal (124) of the first sub-coil assembly (121) is located away from the access terminal (124) of the second sub-coil assembly (122) on the first outer surface (112) along the central axis direction, and the exit terminal (125) of the first sub-coil assembly (121) is located close to the access terminal (124) of the second sub-coil assembly (122).

7. A high voltage coil module according to claim 3, characterized in that the first outer surface (112) and the second outer surface (113) are both parallel to the axis of the mounting hole (111).

8. The high-voltage coil module according to claim 1, characterized in that a protective layer of insulating material formed by a molding process is provided between the first sub-coil group (121), the second sub-coil group (122) and the housing (11).

9. The high-voltage coil module according to claim 5, wherein a first connection terminal (1121) and a second connection terminal (1122) are provided on the first outer surface (112), the first connection terminal (1121) being connected to the access terminal (124) located at one end in the central axis direction, and the second connection terminal (1122) being connected to the outlet terminal (125) located at the other end in the central axis direction.

10. The high voltage coil module as recited in claim 1, wherein the series connection (131) includes a plurality of first wire conduits and the parallel connection (132) includes a plurality of second wire conduits, the first wire conduits having a length that is less than a length of the second wire conduits.

11. A dual-voltage dry-type transformer, characterized by comprising a high-voltage coil module, a low-voltage coil group and a core according to any one of claims 1 to 10, wherein the high-voltage coil module and the low-voltage coil group are respectively sleeved on the core, and if the high-voltage coil module is an input side of the dual-voltage dry-type transformer, a plurality of adjacent first sub-coil groups (121) and second sub-coil groups (122) in the high-voltage coil module are connected in series to enable the high-voltage coil module to input a first voltage, and the first sub-coil groups (121) and the second sub-coil groups (122) are connected in parallel to enable the high-voltage coil module to input a second voltage different from the first voltage; or if the high-voltage coil module is an output side of the dual-voltage dry-type transformer, the first sub-coil assembly (121) and the second sub-coil assembly (122) are connected in series to enable the high-voltage coil module to output a third voltage, and the first sub-coil assembly (121) and the second sub-coil assembly (122) are connected in parallel to enable the high-voltage coil module to output a fourth voltage different from the third voltage.

12. The dual voltage dry transformer of claim 11, wherein the high voltage coil assembly comprises three adjacent first sub-coil assemblies (121) and second sub-coil assemblies (122), and the voltage ratio of the first voltage to the second voltage is 3:1 if the high voltage coil assembly is the input side of the dual voltage dry transformer and the output voltage of the dual voltage dry transformer is unchanged; or if the high-voltage coil module is an output side of the dual-voltage dry-type transformer, and the input voltage of the dual-voltage dry-type transformer is unchanged, the voltage ratio of the third voltage to the fourth voltage is 3:1.