CN216698066U - Coil module and transformer coil - Google Patents

Abstract

The utility model relates to a coil module and a transformer coil, wherein the coil module comprises: each sub-coil is wound in a foil winding mode to form a containing cavity with openings at two ends, the two sub-coils are arranged at intervals along the axial direction of the two sub-coils, and the axes of the two sub-coils are overlapped; the two ends of the first lug plate are respectively connected with the two sub-coils so as to be connected with the two sub-coils in series; and an insulation assembly installed between the two sub-coils. Above-mentioned coil module, two sub-coils are connected respectively so that two sub-coils establish ties at the both ends of first lug, install insulating assembly so that two sub-coils are insulating each other between two sub-coils to when making to adopt foil winding mode coiling coil, foil material can be smooth in vertical direction transition to next coil from a coil, and then improve the efficiency through foil winding mode coiling coil.

Description

Coil module and transformer coil

Technical Field

The utility model relates to the technical field of transformer coils, in particular to a coil module and a transformer coil.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil and an iron core, and the transformer coil forms the circuit part of the transformer, is directly connected with an external power grid and is the most important component in the transformer.

At present, transformer coil's coiling mode has the wire winding, foil winding and wire winding and foil winding mix, to the many and big transformer coil in wire winding cross-section of the number of turns, when adopting the wire winding mode coiling, can both the coiling in level and vertical direction, but the wire rod specification is big, winding efficiency is not high, when adopting the foil winding mode coiling, the winding efficiency of horizontal direction is high, but during the vertical direction coiling, the foil is not convenient for transition to next coil in vertical direction, also be convenient for place insulating material between the two adjacent coils.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a coil module and a transformer coil, in which the foil is convenient to transition to the next coil in the vertical direction, for solving the problem that the foil is inconvenient to transition to the next coil in the vertical direction when the coil is wound by using the foil winding method.

According to an aspect of the present application, there is provided a coil module including:

each sub-coil is wound in a foil winding mode to form a containing cavity with openings at two ends, the two sub-coils are arranged at intervals along the axial direction of the sub-coils, and the axes of the two sub-coils are overlapped;

the two ends of the first lug plate are respectively connected with the two sub-coils so as to be connected with the two sub-coils in series; and

and the insulating assembly is arranged between the two sub-coils.

In one embodiment, the coil module further includes two second lugs, one of the second lugs is mounted at one end of one of the sub-coils far away from the first lug, and the other second lug is mounted at one end of the other sub-coil far away from the first lug.

The insulation assembly includes:

the insulating cylinder is inserted into the containing cavities of the two sub-coils;

the supporting bars are arranged on the outer side wall of the insulating cylinder at intervals along the circumferential direction; and

and the plurality of insulating cushion blocks are arranged in a gap between the two sub-coils along the axial direction at intervals along the circumferential direction, and each insulating cushion block part extends into one of the supporting bars.

In one embodiment, each insulating cushion block is circumferentially provided with a first mounting groove, the insulating assembly further comprises a plurality of first insulating pieces, and each first insulating piece is mounted in one first mounting groove.

In one embodiment, each insulating cushion block is circumferentially provided with two second mounting grooves, the insulating assembly further comprises a plurality of second insulating pieces, and each second insulating piece is mounted in one of the second mounting grooves;

the first mounting groove and the two second mounting grooves formed in each insulating cushion block are arranged at intervals along the axis direction, and the two second mounting grooves are symmetrically arranged on two opposite sides of the first mounting groove.

In one embodiment, the insulation assembly further comprises an insulation angle ring, wherein the insulation angle ring is installed in the second installation grooves and is positioned on one side of the second insulation piece away from the first insulation piece.

In one embodiment, two opposite ends of the first lug are respectively connected with one end of the inner side of each of the two sub-coils and are arranged in the accommodating cavity, and two second lugs are respectively connected with one end of the outer side of each of the two sub-coils.

In one embodiment, two opposite ends of the first lug are respectively connected with one end of the outer side of each of the two sub-coils, and two second lugs are respectively connected with one end of the inner side of each of the two sub-coils and are arranged in the accommodating cavity.

In one embodiment, one end of the first lug plate is connected with one end of the inner side of one of the sub-coils and is arranged in the accommodating cavity, the other end of the first lug plate is connected with one end of the outer side of the other sub-coil, and the two second lug plates are respectively connected with one ends of the two sub-coils, which are not connected with the inner side or the outer side of the first lug plate.

According to another aspect of the present application, there is provided a transformer coil comprising at least the above coil module or at least a plurality of said sub-coils;

wherein the coil module and the sub-coil are connected by the first tab.

Above-mentioned coil module, two sub-coils are connected respectively so that two sub-coils establish ties at the both ends of first lug, install insulating assembly so that two sub-coils are insulating each other between two sub-coils to when making to adopt foil winding mode coiling coil, foil material can be smooth in vertical direction transition to next coil from a coil, and then improve the efficiency through foil winding mode coiling coil.

Drawings

Fig. 1 is a schematic structural diagram of a coil module according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a front view of the coil module of FIG. 1;

FIG. 3 is a schematic diagram of a top view of the coil module of FIG. 1;

FIG. 4 is a schematic diagram of a cross-sectional view in the direction of A-A of the coil module of FIG. 1;

FIG. 5 is a schematic diagram of a partial enlarged view at coil module I in FIG. 4;

FIG. 6 is a schematic view of a coil module of FIG. 1 from another angle;

fig. 7 is a schematic structural diagram of a coil module according to a second embodiment of the present invention;

fig. 8 is a schematic structural diagram of a coil module according to a third embodiment of the present invention.

The reference numbers illustrate:

100. a coil module; 110. a sub-coil; 111. a receiving cavity; 120. a first lug plate; 130. an insulating assembly; 131. an insulating cylinder; 132. a supporting strip; 133. insulating cushion blocks; 1331. a first mounting groove; 1332. A second mounting groove; 134. a first insulating member; 135. a second insulating member; 136. an insulating angle ring; 140. A second lug plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 8, fig. 1 illustrates a structural schematic diagram of a coil module according to a first embodiment of the present invention, fig. 2 illustrates a schematic diagram of a front view of the coil module in fig. 1, fig. 3 illustrates a schematic diagram of a top view of the coil module in fig. 1, fig. 4 illustrates a schematic diagram of a cross-sectional view in a direction of a-a of the coil module in fig. 1, and fig. 5 illustrates a schematic diagram of a partially enlarged view of a position of a coil module I in fig. 4; FIG. 6 shows a schematic view of the coil module of FIG. 1 from another angle; fig. 7 is a schematic structural diagram of a coil module according to a second embodiment of the present invention; fig. 8 shows a schematic structural diagram of a coil module in the third embodiment of the present invention.

The present application provides a transformer coil (not shown in the figures), which comprises a coil module 100, wherein the coil module 100 comprises two sub-coils 110, a first lug 120 and an insulation assembly 130, two ends of the first lug 120 are respectively connected with the two sub-coils 110 to connect the two sub-coils 110 in series, and the insulation assembly 130 is installed between the two sub-coils 110 to insulate the two sub-coils 110 from each other, so as to ensure the normal operation of the transformer coil.

Referring to fig. 1 to 6, the coil module 100 has an overall cylindrical structure. The sub-coils 110 are integrally cylindrical, each sub-coil 110 is made of foil and is wound by foil winding to form a containing cavity 111 with openings at two ends, the axis of the containing cavity 111 coincides with the axis of the sub-coil 110, the two sub-coils 110 are arranged at intervals along the axis direction, and the axes of the two sub-coils 110 coincide. Wherein a gap formed by the two sub-coils 110 in the axial direction thereof can be used to mount the insulation assembly 130. Therefore, the insulation effect between the two sub-coils 110 can be realized through the insulation assembly 130, and the normal operation of the transformer coil is ensured.

The first tab 120 has a plate-like structure like a rectangular parallelepiped, and opposite ends of the first tab 120 along a length direction thereof are connected to the two sub-coils 110, respectively, and are recessed toward an axis direction of the sub-coils 110 as a whole. So, two sub-coils 110 can be established ties to first lug 120, have solved the problem that the foil winding mode is not convenient for pass through in vertical direction, have effectively improved the winding efficiency that adopts the many and big transformer coil of winding cross-section of foil winding mode coiling number of turns. Moreover, the recessed side of the first tab 120 can be better attached to the side of the wound sub-coil 110, which is advantageous for connecting the two sub-coils 110.

In a preferred embodiment, the foil is wound in a horizontal direction to form two independent sub-coils 110, and one end of each sub-coil 110 is connected to one end of the first tab 120 by welding so that the two sub-coils 110 are connected in series. It is understood that the winding process of the sub-coil 110 and the connection manner of the first tab 120 and the sub-coil 110 are not limited thereto, and may be set as needed to satisfy different requirements.

The insulation assembly 130 includes an insulation cylinder 131, a plurality of support bars 132, and a plurality of insulation blocks 133. The insulating cylinder 131 has a cylindrical structure as a whole, the insulating cylinder 131 is inserted into the receiving cavities 111 of the two sub-coils 110, and the axis of the insulating cylinder 131 is overlapped with the axes of the two sub-coils 110. In a preferred embodiment, the insulating cylinder 131 is a composite insulating structure, and can be made of different layers of insulating materials such as imine plates or glass fiber plates as the mechanical strength material

Insulating materials such as insulating paper as electricityThe insulating cylinder is made of gas insulating materials, so that the insulating cylinder meets the requirements of mechanical strength and electrical performance. It is to be understood that the material of the insulation tube 131 is not limited thereto, and may be set as needed to satisfy different requirements.

The whole cross section that is "T" style of calligraphy of support bar 132, a plurality of support bars 132 set up in the lateral wall of insulating cylinder 131 along circumference interval, and a plurality of support bars 132 are located between insulating cylinder 131 and two sub-coils 110 promptly, and the lateral wall at insulating cylinder 131 is installed to one side that sub-coils 110 were kept away from to support bar 132, and support bar 132 is whole to be sunken towards sub-coil 110's axis direction. The concave side of the support bar 132 far away from the sub-coil 110 can be better attached to the outer side wall of the insulation cylinder 131, so that the support bar 132 is conveniently installed on the insulation cylinder 131, the support bar 132 is used for supporting the insulation cylinder 132 and enabling the inner side wall of the sub-coil 110 to form the containing cavity 111 to achieve an insulation effect, and the insulation cylinder 132 is prevented from being toppled in the process of winding the coil.

In a preferred embodiment, eight support bars 132 are uniformly distributed on the outer sidewall of the insulation cylinder 131 at intervals in the circumferential direction, and the length dimension of the support bars 132 in the axial direction is the same as that of the insulation cylinder 131, so as to better support the insulation cylinder 131. It is understood that the number, size and distribution of the supporting bars 132 are not limited thereto, and may be set as required to meet different requirements.

Every insulating pad 133 is whole all to be the structure of similar cuboid, and insulating pad 133 all caves in towards the axis direction along diameter direction's both sides, and "T" type recess has been seted up to the one end that insulating pad 133 is close to insulating cylinder 131 so that insulating pad 133 part joint in support bar 132. A plurality of insulation spacers 133 are circumferentially arranged in the gap between the two sub-coils 110 along the axial direction at intervals, and each insulation spacer 133 partially extends into one of the support bars 132, that is, the insulation spacers 133 and the support bars 132 are correspondingly arranged and have the same number, the thickness of the insulation spacers 133 along the diameter direction is greater than that of the sub-coils 110 along the diameter direction, and each insulation spacer 133 can partially extend into one of the corresponding support bars 132 along the diameter direction.

Further, each insulating spacer 133 is provided with a first mounting groove 1331 and two second mounting grooves 1332 along the circumferential direction, the first mounting groove 1331 and the two second mounting grooves 1332 are arranged at intervals along the axial direction, and the two second mounting grooves 1332 are symmetrically arranged at two opposite sides of the first mounting groove 1331, that is, the first mounting groove 1331 is located in the middle of the insulating spacer 133 along the thickness direction thereof, and the two second mounting grooves 1332 are located at two ends of the insulating spacer 133 along the thickness direction thereof. Wherein, the depth dimension of the first mounting groove 1331 in the diameter direction is greater than the depth dimension of the second mounting groove 1332 in the diameter direction, and the first mounting groove 1331 and the two second mounting grooves 1332 are used for mounting part of the insulation assembly 130.

So, when two sub-coils 110 were coiled and were accomplished, insulating pad 133 can make two sub-coils 110 form the clearance along the axis direction, can understand, the inboard shape of insulating pad 133 is not limited, only need set up with the support bar 132 matching "T" type recess so that insulating pad 133 part joint in support bar 132 can, and insulating pad 133 and install some insulating assemblies 130 in first mounting groove 1331 and two second mounting grooves 1332 just can make the adjacent both ends of two sub-coils 110 insulated each other, strengthen the insulating effect between two sub-coils 110, guarantee that transformer coil can normally work.

In a preferred embodiment, the insulating spacers 133 are made of an imide plate or a fiberglass plate or

Insulating paper and other insulating materials. It is understood that the material of the insulating spacer 133 is not limited thereto, and may be set as needed to satisfy various requirements.

In some embodiments, the insulation assembly 130 further includes a plurality of first insulation members 134. Each first insulating member 134 is integrally of a structure similar to a rectangular parallelepiped, the width of the first insulating member 134 in the circumferential direction along the diameter direction gradually increases from the axis to the outer side wall of the sub-coil 110, each first insulating member 134 is installed in a first installation groove 1331 formed in one of the insulating spacers 133, and the first insulating members 134 and the insulating spacers 133 are correspondingly arranged and have the same number. In a preferred embodiment, the first insulator 134 is made of imineBoard or glass fibre board or

Insulating paper and other insulating materials. It is to be understood that the material of the first insulating member 134 is not limited thereto, and may be set as needed to satisfy different requirements.

In some embodiments, the insulation assembly 130 further comprises a plurality of second insulation members 135. Each second insulating member 135 is integrally formed in a structure similar to a rectangular parallelepiped, each second insulating member 135 is installed in one second installation groove 1332 formed in one of the insulating spacers 133 and located at a side close to the first installation groove 1331, and the second insulating members 135 and the insulating spacers 133 are correspondingly arranged and have the same number. In a preferred embodiment, the second insulating member 135 is made of an imide plate or a fiberglass plate or

Insulating paper and other insulating materials. It is to be understood that the material of the second insulating member 135 is not limited thereto, and may be provided as needed to satisfy various requirements.

Therefore, a first mounting groove 1331 and two second mounting grooves 1332 are formed in each insulating pad 133 along the circumferential direction to mount a first insulating member 134 and two second insulating members 135, so that the insulating effect between the two sub-coils 110 is further improved, the reliability of the transformer coil is improved, and the transformer coil can normally work.

In some embodiments, the insulation assembly 130 further includes an insulating angle ring 136. The insulating angle rings 136 are all in an "L" shape, the insulating angle rings 136 are installed in the second installation grooves 1332 formed in the insulating spacers 133 and located on one side of the second insulating member 135 away from the first insulating member 134, and the insulating angle rings 136 are circumferentially arranged. One end of the insulation angle ring 136 is in a circular ring structure and extends into the second mounting groove 1332, and the other end of the insulation angle ring is in a circular ring structure and is recessed towards the axial direction of the sub-coil 110 and covers the outer side wall of part of the sub-coil 110. Therefore, the concave side of the insulation angle ring 136 can be better attached to the outer side wall of the sub-coil 110, the insulation angle ring 136 is convenient to mount, the insulation effect between the two sub-coils 110 can be further enhanced by the insulation angle ring 136, and the normal work of the transformer coil is ensured.

In a preferred embodiment, the insulating angle ring 136 may be made of silicon rubber or

Insulating paper and other insulating materials. It is understood that the material of the insulating angle ring 136 is not limited thereto, and may be set as needed to satisfy various requirements.

In some embodiments, the coil module 100 further includes two second tabs 140. Each second lug 140 is integrally formed in a plate-like structure similar to a rectangular parallelepiped, the second lug 140 is integrally recessed toward the axial direction of the sub-coil 110, one second lug 140 is mounted at one end of one sub-coil 110 far away from the end where the first lug 120 is mounted, and the other second lug 140 is mounted at one end of the other sub-coil 110 far away from the end where the first lug 120 is mounted, that is, one end of each sub-coil 110 is connected to one end of the first lug 120, and the other end of each sub-coil 110 is connected to one first lug 140. Thus, the recessed side of the second tab 140 can be better attached to the side of the wound sub-coil 110, facilitating connection with the sub-coil 110, and the two second tabs 140.

In a preferred embodiment, the sub-coil 110 is connected to the second tab 140 by welding. It is to be understood that the connection manner of the second tab 140 to the sub-coil 110 is not limited thereto, and may be set as needed to satisfy various requirements.

Referring to fig. 6 to 8, in the present application, the installation positions of the first tab 120 and the two second tabs 140 may be set according to specific situations, including the following three installation positions:

in the first embodiment, the two opposite ends of the first tab 120 are respectively connected to one end of the inner side of each of the two sub-coils 110 and are disposed in the receiving cavity 111, and the two second tabs 140 are respectively connected to one end of the outer side of each of the two sub-coils 110.

In the second embodiment, the opposite ends of the first tab 120 are connected to the outer ends of the two sub-coils 110, respectively, and the two second tabs 140 are connected to the inner ends of the two sub-coils 110, respectively, and are disposed in the receiving cavity 111.

In the third embodiment, one end of the first tab 120 is connected to one end of one of the sub-coils 110 and is disposed in the receiving cavity 111, the other end of the first tab 120 is connected to one end of the other sub-coil 110, and the two second tabs 140 are respectively connected to one ends of the two sub-coils 110 which are not connected to the inner side or the outer side of the first tab 120. In the third embodiment, the first tab 120 has an irregular plate-shaped structure and includes two mounting portions and a connecting portion, the two opposite ends of the connecting portion are respectively connected to one mounting portion, and one ends of the two mounting portions, which are far away from the connecting portion, are respectively connected to the two sub-coils 110 to serially connect the two sub-coils 110.

It is to be understood that the installation positions and the specific shape structures of the first and second tabs 120 and 140 are not limited to the above-described embodiments, and may be changed accordingly as needed to meet the requirements.

The present application also provides a transformer coil, which at least comprises one coil module 100 as described above or at least comprises one coil module 100 as described above and a plurality of sub-coils 110. It will be appreciated that the number of coil modules 100 and the number of sub-coils 110 included in the transformer coil may be set as desired to meet different requirements.

To sum up, the present application provides a coil module 100 and a transformer coil, two sub-coils 110 of the coil module 100 are connected in series through a first lug 120 to form a whole, and an insulation component 130 is installed between the two sub-coils 110 to insulate the two sub-coils 110, so that the reliability of the transformer coil is improved, and the transformer coil can normally work.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A coil module, comprising:

each sub-coil is wound in a foil winding mode to form a containing cavity with openings at two ends, the two sub-coils are arranged at intervals along the axial direction of the sub-coils, and the axes of the two sub-coils are overlapped;

the two ends of the first lug plate are respectively connected with the two sub-coils so as to be connected with the two sub-coils in series; and

and the insulating assembly is arranged between the two sub-coils.

2. The coil module of claim 1 further comprising two second terminal lugs, one of said second terminal lugs being mounted to one of said sub-coils at an end remote from where said first terminal lug is mounted, the other of said second terminal lugs being mounted to the other of said sub-coils at an end remote from where said first terminal lug is mounted.

3. The coil module of claim 1, wherein the insulation assembly comprises:

the insulating cylinder is inserted into the containing cavities of the two sub-coils;

the supporting bars are arranged on the outer side wall of the insulating cylinder at intervals along the circumferential direction; and

and the plurality of insulating cushion blocks are arranged in a gap between the two sub-coils along the axial direction at intervals along the circumferential direction, and each insulating cushion block partially extends into one of the supporting bars.

4. The coil module of claim 3, wherein each of the insulating spacers defines a first mounting recess along a circumferential direction, and the insulating assembly further comprises a plurality of first insulating members, each of the first insulating members being mounted in one of the first mounting recesses.

5. The coil module of claim 4, wherein each of the insulating spacers defines two second mounting grooves along a circumferential direction, and the insulating assembly further includes a plurality of second insulating members, each of the second insulating members being mounted in one of the second mounting grooves;

the first mounting groove and the two second mounting grooves formed in each insulating cushion block are arranged at intervals along the axis direction, and the two second mounting grooves are symmetrically arranged on two opposite sides of the first mounting groove.

6. The coil module of claim 5 wherein the insulation assembly further comprises an insulation angle ring mounted within the second plurality of mounting grooves and on a side of the second insulator remote from the first insulator.

7. The coil module according to claim 2, wherein the first tabs are connected at opposite ends thereof to respective inner ends of the two sub-coils and are disposed in the receiving cavities, and the second tabs are connected to respective outer ends of the two sub-coils.

8. The coil module according to claim 2, wherein the first tabs are connected to two ends of the first tab, and the second tabs are connected to two ends of the second tab, and are disposed in the receiving cavities.

9. The coil module according to claim 2, wherein one end of the first tab is connected to an end of an inner side of one of the sub-coils and is disposed in the receiving cavity, the other end of the first tab is connected to an end of an outer side of the other sub-coil, and the two second tabs are respectively connected to ends of the two sub-coils, which are not connected to the inner side or the outer side of the first tab.

10. A transformer coil comprising at least a coil module according to any one of claims 1 to 9 or comprising at least a coil module according to any one of claims 1 to 9 and a plurality of said sub-coils;

wherein the coil module and the sub-coil are connected by the first tab.

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