Insulation protection and dry-type transformer having the same

Abstract

The application provides an insulation protection piece and a dry-type transformer with the same, and the insulation protection piece comprises: a first insulation sheath with a first arc-shaped slot extending in a first direction; a second insulation sheath which is arranged on the first insulation sheath in an openable and closable manner, and the second insulation sheath has a second arc-shaped slot extending in the first direction; when the first insulation sheath is buckled on the second insulation sheath, the first arc-shaped slot and the second arc-shaped slot are arranged to form an insulation mounting hole extending in the first direction; and a locking structure which is arranged between the first insulation sheath and the second insulation sheath, and the first insulation sheath and the second insulation sheath can be locked and connected through the locking structure when the first insulation sheath is buckled on the second insulation sheath. Through the technical scheme provided in the application, the problem that the live part of the outlet terminal of the dry-type transformer in the related art is directly exposed to the air environment and has a short-circuit hidden danger can be solved.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and more specifically, to an insulating protective component and a dry-type transformer having the same. Background Technology

[0002] A dry-type transformer is a type of power transformer whose core and windings are not immersed in insulating oil, but are cooled by natural cooling or air cooling. The windings of a dry-type transformer consist of a high-voltage winding and a low-voltage winding. The high-voltage winding is usually made of insulated copper wire and uses non-immersion insulation, such as epoxy resin casting or other types of solid insulation materials.

[0003] In related technologies, the high-voltage winding is provided with outgoing terminals, which serve as winding connection points. The transport current flows out or into the winding through the outgoing terminals. The dry-type transformer also includes a high-voltage connecting rod, the two ends of which are connected to the outgoing terminals of different high-voltage windings (e.g., by screw fixing).

[0004] However, in related technologies, the live parts of the outgoing terminals are directly exposed to the air environment, posing a short circuit hazard and endangering the safe operation of equipment and the reliability of the power grid. Summary of the Invention

[0005] This invention provides an insulating protective component and a dry-type transformer having the same, to solve the problem in related technologies where the live parts of the outgoing terminals of dry-type transformers are directly exposed to the air environment, posing a short-circuit hazard.

[0006] According to one aspect of the present invention, an insulating protective member is provided, comprising: a first insulating sleeve having a first arcuate groove extending along a first direction; a second insulating sleeve being closably disposed on the first insulating sleeve, the second insulating sleeve having a second arcuate groove extending along the first direction, wherein when the first insulating sleeve is fastened to the second insulating sleeve, the first arcuate groove and the second arcuate groove form an insulating mounting hole extending along the first direction; and a locking structure disposed between the first insulating sleeve and the second insulating sleeve, wherein when the first insulating sleeve is fastened to the second insulating sleeve, the first insulating sleeve and the second insulating sleeve can be locked together by the locking structure.

[0007] Furthermore, the insulating protective component also includes a heat dissipation structure, which is disposed on the first insulating sheath and / or the second insulating sheath.

[0008] Furthermore, the heat dissipation structure includes: a first heat dissipation hole, which is disposed on the outer peripheral wall of the first insulating sheath and communicates with the first arc-shaped groove; and a second heat dissipation hole, which is disposed on the outer peripheral wall of the second insulating sheath and communicates with the second arc-shaped groove.

[0009] Furthermore, the heat dissipation structure includes a plurality of first heat dissipation holes disposed on the first insulating sheath, the plurality of first heat dissipation holes being evenly distributed circumferentially along the first arc-shaped groove, and the first heat dissipation holes extending radially along the first arc-shaped groove; and / or, the heat dissipation structure includes a plurality of second heat dissipation holes disposed on the second insulating sheath, the plurality of second heat dissipation holes being evenly distributed circumferentially along the second arc-shaped groove, and the second heat dissipation holes extending radially along the second arc-shaped groove.

[0010] Furthermore, the first insulating sheath has a first end face and a second end face arranged opposite to each other in a first direction. In the direction from the first end face to the second end face, the distance between the outer peripheral wall of the first insulating sheath and the groove wall of the first arc-shaped groove gradually increases; the distance between the outer peripheral wall of the second insulating sheath and the groove wall of the second arc-shaped groove gradually increases.

[0011] Furthermore, the first side of the first insulating sheath and the first side of the second insulating sheath are hinged together, the hinge axis of the first insulating sheath and the second insulating sheath extends along the first direction, and the locking structure is disposed between the second side of the first insulating sheath and the second insulating sheath.

[0012] Furthermore, the locking structure includes: a latch groove, disposed on the second side of the first insulating sheath; a latch block, disposed on the second side of the second insulating sheath facing the latch groove; and a latch, movably disposed within the latch groove, the latch having a locked position and a clearance position. When the latch is in the clearance position, the latch block can move in and out of the latch groove. When the latch is in the locked position, the latch block extends into the latch groove and engages with the latch.

[0013] Furthermore, the insulating protective component also includes multiple insulating skirts, each insulating skirt comprising a first arc segment and a second arc segment. The first arc segment extends circumferentially along the first arc groove and is disposed on the outer peripheral wall of the first insulating sheath, and the second arc segment extends circumferentially along the second arc groove and is disposed on the outer peripheral wall of the second insulating sheath. The first arc segments of the multiple insulating skirts are arranged along a first direction, and the second arc segments of the multiple insulating skirts are arranged along the first direction.

[0014] Furthermore, both the first insulating sleeve and the second insulating sleeve are integrally injection molded structures; both the first insulating sleeve and the second insulating sleeve are made of insulating silicone rubber.

[0015] According to another aspect of the present invention, a dry-type transformer is provided, comprising: a high-voltage winding having outgoing terminals; and an insulating protective element, wherein when a first insulating sleeve of the insulating protective element is engaged with a second insulating sleeve of the insulating protective element, the outgoing terminals extend into an insulating mounting hole of the insulating protective element, the insulating protective element being the insulating protective element provided above.

[0016] Applying the technical solution of this invention, the insulating protective component includes a first insulating sleeve, a second insulating sleeve, and a locking structure. By opening the first and second insulating sleeves, the outgoing terminal is placed in the second arc-shaped groove. Then, the first insulating sleeve is fastened to the second insulating sleeve, so that the outgoing terminal is accommodated in the insulating mounting hole surrounded by the first and second arc-shaped grooves. The locking structure is used to lock the first and second insulating sleeves together, completing the installation of the insulating protective component. The insulating protective component allows the outgoing terminal to be accommodated in the insulating mounting hole, and the phase-to-phase conductors can be connected to the outgoing terminal through the insulating mounting hole. The insulating protective component seals the exposed high-voltage portion of the outgoing terminal, preventing dust accumulation at the connection between the high-voltage connecting rod and the outgoing terminal, thus preventing shortening the insulation distance. It also prevents creepage from the outgoing terminal to ground, which could cause a transformer short circuit, and avoids short circuits and burnouts caused by small animals touching the connection between the outgoing terminal and the high-voltage connecting rod. This improves the insulation safety of the dry-type transformer's outgoing terminals and ensures the stability of the equipment and the power grid. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of an insulating protective component provided according to an embodiment of the present invention is shown;

[0019] Figure 2 A cross-sectional view of an insulating protective member provided according to an embodiment of the present invention is shown.

[0020] The above figures include the following reference numerals:

[0021] 10. First insulating sheath; 11. First arc-shaped groove; 12. First end face; 13. Second end face;

[0022] 20. Second insulating sheath; 21. Second arc-shaped groove;

[0023] 30. Locking structure; 31. Snap groove; 32. Snap block; 33. Locking latch;

[0024] 40. Heat dissipation structure; 41. First heat dissipation hole; 42. Second heat dissipation hole;

[0025] 50. Hinge;

[0026] 60. Insulation mounting hole. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides an insulating protective component, which includes a first insulating sleeve 10, a second insulating sleeve 20, and a locking structure 30. The first insulating sleeve 10 has a first arcuate groove 11 extending along a first direction. The second insulating sleeve 20 is closably disposed on the first insulating sleeve 10 and has a second arcuate groove 21 extending along the first direction. When the first insulating sleeve 10 is fastened to the second insulating sleeve 20, the first arcuate groove 11 and the second arcuate groove 21 form an insulating mounting hole 60 extending along the first direction. The locking structure 30 is disposed between the first insulating sleeve 10 and the second insulating sleeve 20. When the first insulating sleeve 10 is fastened to the second insulating sleeve 20, the first insulating sleeve 10 and the second insulating sleeve 20 can be locked together by the locking structure 30.

[0029] The insulating protective component provided in this embodiment includes a first insulating sleeve 10, a second insulating sleeve 20, and a locking structure 30. By opening the first insulating sleeve 10 and the second insulating sleeve 20, the outgoing terminal is placed in the second arc-shaped groove 21, and then the first insulating sleeve 10 is fastened to the second insulating sleeve 20, so that the outgoing terminal is accommodated in the insulating mounting hole 60 surrounded by the first arc-shaped groove 11 and the second arc-shaped groove 21. The locking structure 30 is used to lock the first insulating sleeve 10 and the second insulating sleeve 20 together, thus completing the installation of the insulating protective component. The insulating protective component allows the outgoing terminals to be housed within the insulating mounting hole 60, and the phase-to-phase conductors can be connected to the outgoing terminals through the insulating mounting hole 60. The insulating protective component seals the exposed high-voltage part of the outgoing terminals, preventing dust accumulation at the connection between the high-voltage connecting rod and the outgoing terminals, which would shorten the insulation distance. It also prevents the outgoing terminals from creeping to ground and causing a short circuit in the transformer, and avoids short circuits and burnouts in the transformer caused by small animals touching the connection between the outgoing terminals and the high-voltage connecting rod. This improves the insulation safety of the outgoing terminals of the dry-type transformer and ensures the stability of the equipment and the power grid.

[0030] In related technologies, the high-voltage connecting rod is fixed to the insulator at the outgoing end by screws.

[0031] like Figure 1 and Figure 2As shown, the insulating protective component also includes a heat dissipation structure 40, which is disposed on the first insulating sleeve 10 and / or the second insulating sleeve 20. When the outgoing terminal is electrically connected to the high-voltage connecting rod, heat is generated in the insulating mounting hole of the outgoing terminal. The generated heat can be dissipated to the outside through the heat dissipation structure 40, thereby extending the service life of the outgoing terminal.

[0032] like Figure 1 and Figure 2 As shown, the heat dissipation structure 40 includes a first heat dissipation hole 41 and a second heat dissipation hole 42. The first heat dissipation hole 41 is disposed on the outer peripheral wall of the first insulating sleeve 10 and communicates with the first arc-shaped groove 11. The second heat dissipation hole 42 is disposed on the outer peripheral wall of the second insulating sleeve 20 and communicates with the second arc-shaped groove 21. By utilizing the first heat dissipation hole 41 and the second heat dissipation hole 42 to dissipate heat to the outside, the heat generated by the outgoing terminal during operation can be dissipated through the first heat dissipation hole 41 on the first insulating sleeve 10 and the second heat dissipation hole 42 on the second insulating sleeve 20, respectively, which facilitates uniform heat dissipation and extends the service life of the outgoing terminal.

[0033] It should be noted that the outer peripheral wall of the first insulating sleeve 10 refers to the surface of the first insulating sleeve 10 exposed when it is fastened to the second insulating sleeve 20, excluding the two end walls of the first insulating sleeve 10 in the first direction and the first arc groove 11. The outer peripheral wall of the second insulating sleeve 20 refers to the surface of the second insulating sleeve 20 exposed when it is fastened to the first insulating sleeve 10, excluding the two end walls of the second insulating sleeve 20 in the first direction and the second arc groove 21.

[0034] like Figure 2 As shown, the heat dissipation structure 40 includes a plurality of first heat dissipation holes 41 disposed on the first insulating sleeve 10. The plurality of first heat dissipation holes 41 are evenly distributed circumferentially along the first arc-shaped groove 11 and extend radially along the first arc-shaped groove 11. By utilizing the aforementioned first heat dissipation holes 41 extending radially along the first arc-shaped groove 11, the heat dissipation distance from the first arc-shaped groove 11 to the outside of the first insulating sleeve 10 can be shortened. Furthermore, by utilizing the plurality of first heat dissipation holes 41 evenly distributed circumferentially along the first arc-shaped groove 11, the heat dissipation uniformity from the first arc-shaped groove 11 to the outside of the first insulating sleeve 10 can be improved, enabling uniform heat dissipation during operation of the outgoing terminal and extending the service life of the outgoing terminal.

[0035] like Figure 2As shown, the heat dissipation structure 40 includes a plurality of second heat dissipation holes 42 disposed on the second insulating sleeve 20. The plurality of second heat dissipation holes 42 are evenly distributed circumferentially along the second arc-shaped groove 21 and extend radially along the second arc-shaped groove 21. By utilizing the aforementioned second heat dissipation holes 42 extending radially along the second arc-shaped groove 21, the heat dissipation distance from the second arc-shaped groove 21 to the outside of the second insulating sleeve 20 can be shortened. Furthermore, by utilizing the plurality of second heat dissipation holes 42 evenly distributed circumferentially along the second arc-shaped groove 21, the heat dissipation uniformity from the second arc-shaped groove 21 to the outside of the second insulating sleeve 20 can be improved, enabling uniform heat dissipation during operation of the outgoing terminal and extending the service life of the outgoing terminal.

[0036] like Figure 1 As shown, the first insulating sheath 10 has a first end face 12 and a second end face 13 facing each other in a first direction. The second end face 13 is disposed relative to the first end face 12 toward the high-voltage winding, and the first end face 12 is disposed relative to the second end face 13 toward the high-voltage connecting rod.

[0037] like Figure 1 As shown, in the direction from the first end face 12 to the second end face 13, the distance between the outer peripheral wall of the first insulating sleeve 10 and the groove wall of the first arc-shaped groove 11 gradually increases. With this structure, the discharge distance of the first insulating sleeve 10 along the insulating surface in the direction from the first end face 12 to the second end face 13 can be increased.

[0038] like Figure 1 As shown, in the direction from the first end face 12 to the second end face 13, the distance between the outer peripheral wall of the second insulating sleeve 20 and the groove wall of the second arc-shaped groove 21 gradually increases. With this structure, the discharge distance of the second insulating sleeve 20 along the insulating surface in the direction from the first end face 12 to the second end face 13 can be increased.

[0039] like Figure 1 and Figure 2 As shown, the first side of the first insulating sleeve 10 and the first side of the second insulating sleeve 20 are hinged together. The hinge axis of the first insulating sleeve 10 and the second insulating sleeve 20 extends along a first direction. The locking structure 30 is disposed between the second side of the first insulating sleeve 10 and the second side of the second insulating sleeve 20. When installing the insulating protective component, the first insulating sleeve 10 is rotated open, causing the first arc-shaped groove 11 and the second arc-shaped groove 21 to separate. The outgoing terminal is placed in the second arc-shaped groove 21, and the first insulating sleeve 10 is rotated to engage and locked in place by the locking structure 30.

[0040] It should be noted that the first insulating sleeve 10 and the second insulating sleeve 20 are disposed opposite each other in a second direction perpendicular to the first direction. The first side and the second side of the first insulating sleeve 10 refer to the two sides of the first insulating sleeve 10 in a third direction perpendicular to the first and second directions when the first insulating sleeve 10 is fastened to the second insulating sleeve 20. The first side and the second side of the second insulating sleeve 20 refer to the two sides of the second insulating sleeve 20 in a third direction when the first insulating sleeve 10 is fastened to the second insulating sleeve 20.

[0041] Specifically, the first side of the first insulating sheath 10 and the first side of the second insulating sheath 20 are hinged together by a hinge 50.

[0042] like Figure 2 As shown, the locking structure 30 includes a latching groove 31, a latching block 32, and a latch 33. The latching groove 31 is located on the second side of the first insulating sleeve 10, and the latching block 32 is located on the second side of the second insulating sleeve 20 facing the latching groove 31. The latch 33 is movably disposed within the latching groove 31 and has a locking position and a clearance position. When the latch 33 is in the clearance position, the latching block 32 can move in and out of the latching groove 31. When the latch 33 is in the locking position, the latching block 32 extends into the latching groove 31 and engages with the latch 33. Using the above-described locking structure 30, when the first insulating sleeve 10 is fastened to the second insulating sleeve 20, the locking connection of the locking structure 30 to the first insulating sleeve 10 and the second insulating sleeve 20 is reliable and easy to operate.

[0043] In this embodiment, the insulating protective component further includes multiple insulating skirts. Each insulating skirt includes a first arc segment and a second arc segment. The first arc segment extends circumferentially along the first arc groove 11 and is disposed on the outer peripheral wall of the first insulating sleeve 10. The second arc segment extends circumferentially along the second arc groove 21 and is disposed on the outer peripheral wall of the second insulating sleeve 20. The first arc segments of the multiple insulating skirts are arranged along a first direction, and the second arc segments of the multiple insulating skirts are arranged along the first direction.

[0044] In this embodiment, both the first insulating sleeve 10 and the second insulating sleeve 20 are integrally injection molded structures. The use of the above-described molding structure for the first insulating sleeve 10 and the second insulating sleeve 20 facilitates the manufacturing of the insulating protective component, and the surface of the insulating protective component is smooth and burr-free. When the first insulating sleeve 10 is fastened to the second insulating sleeve 20, there is a tight, seamless seal between the first insulating sleeve 10 and the second insulating sleeve 20, effectively sealing the outgoing connector.

[0045] In this embodiment, both the first insulating sleeve 10 and the second insulating sleeve 20 are made of insulating silicone rubber.

[0046] Another embodiment of the present invention provides a dry-type transformer, which includes a high-voltage winding and an insulating protective component. The high-voltage winding has an outgoing terminal. When the first insulating sleeve 10 of the insulating protective component is fastened to the second insulating sleeve 20 of the insulating protective component, the outgoing terminal extends into the insulating mounting hole 60 of the insulating protective component. The insulating protective component is the one provided above. Using the dry-type transformer provided in this embodiment, by opening the first insulating sleeve 10 and the second insulating sleeve 20, the outgoing terminal is placed in the second arc-shaped groove 21, and then the first insulating sleeve 10 is fastened to the second insulating sleeve 20, so that the outgoing terminal is accommodated in the insulating mounting hole 60 surrounded by the first arc-shaped groove 11 and the second arc-shaped groove 21. The first insulating sleeve 10 and the second insulating sleeve 20 are locked together using the locking structure 30, thus completing the installation of the insulating protective component. The insulating protective component allows the outgoing terminals to be housed within the insulating mounting hole 60, and the phase-to-phase conductors can be connected to the outgoing terminals through the insulating mounting hole 60. The insulating protective component seals the exposed high-voltage part of the outgoing terminals, preventing dust accumulation at the connection between the high-voltage connecting rod and the outgoing terminals, which would shorten the insulation distance. It also prevents the outgoing terminals from creeping to ground and causing a short circuit in the transformer, and avoids short circuits and burnouts in the transformer caused by small animals touching the connection between the outgoing terminals and the high-voltage connecting rod. This improves the insulation safety of the outgoing terminals of the dry-type transformer and ensures the stability of the equipment and the power grid.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0049] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0050] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0051] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An insulating protective component for outgoing terminals, characterized in that, The outgoing terminal insulation protection component includes: The first insulating sheath (10) has a first arcuate groove (11) extending along a first direction. The second insulating sleeve (20) is detachably disposed on the first insulating sleeve (10). The second insulating sleeve (20) has a second arcuate groove (21) extending along the first direction. When the first insulating sleeve (10) is fastened to the second insulating sleeve (20), the first arcuate groove (11) and the second arcuate groove (21) form an insulating mounting hole (60) extending along the first direction. A locking structure (30) is provided between the first insulating sleeve (10) and the second insulating sleeve (20). When the first insulating sleeve (10) is fastened to the second insulating sleeve (20), the first insulating sleeve (10) and the second insulating sleeve (20) can be locked together by the locking structure (30). The outgoing terminal insulation protection component also includes a heat dissipation structure (40), which is disposed on the first insulation sleeve (10) and / or the second insulation sleeve (20); The heat dissipation structure (40) includes a first heat dissipation hole (41) and a second heat dissipation hole (42). The first heat dissipation hole (41) is disposed on the outer peripheral wall of the first insulating sleeve (10) and communicates with the first arc groove (11). The second heat dissipation hole (42) is disposed on the outer peripheral wall of the second insulating sleeve (20) and communicates with the second arc groove (21). The heat dissipation structure (40) includes a plurality of first heat dissipation holes (41) disposed on the first insulating sheath (10), the plurality of first heat dissipation holes (41) being evenly distributed circumferentially along the first arcuate groove (11), and the first heat dissipation holes (41) extending radially along the first arcuate groove (11); and / or, The heat dissipation structure (40) includes a plurality of second heat dissipation holes (42) disposed on the second insulating sheath (20). The plurality of second heat dissipation holes (42) are evenly distributed along the circumference of the second arc groove (21), and the second heat dissipation holes (42) extend radially along the second arc groove (21). The first insulating sleeve (10) has a first end face (12) and a second end face (13) facing each other in the first direction. In the direction from the first end face (12) to the second end face (13), the distance between the outer peripheral wall of the first insulating sleeve (10) and the groove wall of the first arc groove (11) gradually increases; the distance between the outer peripheral wall of the second insulating sleeve (20) and the groove wall of the second arc groove (21) gradually increases.

2. The outgoing terminal insulation protection component according to claim 1, characterized in that, The first side of the first insulating sleeve (10) and the first side of the second insulating sleeve (20) are hinged together, the hinge axis of the first insulating sleeve (10) and the second insulating sleeve (20) extends along the first direction, and the locking structure (30) is disposed between the second side of the first insulating sleeve (10) and the second side of the second insulating sleeve (20).

3. The outgoing terminal insulation protection component according to claim 2, characterized in that, The locking structure (30) includes: A groove (31) is provided on the second side of the first insulating sheath (10); The fastener (32) is disposed on the second side of the second insulating sleeve (20) facing the fastener slot (31); The latch (33) is movably disposed in the latch groove (31). The latch (33) has a locking position and a clearance position. When the latch (33) is in the clearance position, the latch block (32) can move in and out of the latch groove (31). When the latch (33) is in the locking position, the latch block (32) extends into the latch groove (31) and engages with the latch (33).

4. The outgoing terminal insulation protection component according to claim 1, characterized in that, The outgoing terminal insulation protection component also includes multiple insulating skirts. Each insulating skirt includes a first arc segment and a second arc segment. The first arc segment extends circumferentially along the first arc groove (11) and is disposed on the outer peripheral wall of the first insulating sleeve (10). The second arc segment extends circumferentially along the second arc groove (21) and is disposed on the outer peripheral wall of the second insulating sleeve (20). The first arc segments of the multiple insulating skirts are arranged along the first direction, and the second arc segments of the multiple insulating skirts are arranged along the first direction.

5. The outgoing terminal insulation protection component according to claim 1, characterized in that, Both the first insulating sleeve (10) and the second insulating sleeve (20) are integrally injection molded structures; Both the first insulating sleeve (10) and the second insulating sleeve (20) are made of insulating silicone rubber.

6. A dry-type transformer, characterized in that, The dry-type transformer includes: High-voltage winding with outgoing terminals; When the first insulating sleeve (10) of the outgoing terminal insulating protection component is fastened to the second insulating sleeve (20) of the outgoing terminal insulating protection component, the outgoing terminal extends into the insulating mounting hole (60) of the outgoing terminal insulating protection component. The outgoing terminal insulating protection component is the outgoing terminal insulating protection component according to any one of claims 1 to 5.

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