CN213877739U - Protective dry-type transformer - Google Patents

Abstract

The utility model relates to a protection type dry-type transformer is in the equipment in-process, in the protective housing of packing into the transformer body to stretch out first binding post and second binding post from the protective housing respectively, make the binding post of transformer body expose outside the protective housing. Because first frame and second frame correspond respectively and cover first binding post and second binding post, consequently, the operation personnel only need in the wiring process through first operation mouth and second operation mouth, respectively to first connecting terminal and second connecting terminal carry out the wiring operation can, need not to bore into the protective housing, effectively avoid dropping the foreign matter or leave over to the transformer body on, guarantee that the transformer body is stable, safe operation. In addition, cover respectively before first binding post and second binding post and establish first frame and second frame, effectively prevent that the staff from the mistake striking or mistake from touching first binding post and second binding post, the binding post of protection dry-type transformer does not receive the harm from the outside.

Description

Protective dry-type transformer

Technical Field

The utility model relates to a power equipment technical field especially relates to protection type dry-type transformer.

Background

A transformer is a device for changing an ac voltage using the principle of electromagnetic induction, and its main components include a primary coil, a secondary coil, and an iron core (magnetic core), which are particularly important in power infrastructure equipment. Dry transformers are widely used in electrical infrastructure.

The traditional dry-type transformer is usually placed in a protective outer box, and in the installation process, metal foreign matters such as scraps, installation tools and the like are often dropped or left on the transformer. If the metal foreign matters are not found and removed in time before the transformer runs, partial discharge is easy to occur at the positions of the metal foreign matters in the running process of the transformer, the aging of an insulating material in the transformer is accelerated until the insulating material fails, the problems of turn-to-turn short circuit and the like of the transformer are finally caused, and even the transformer is damaged.

SUMMERY OF THE UTILITY MODEL

Therefore, a need exists for a protective dry-type transformer, which effectively prevents foreign matters from falling or leaving onto the transformer body and ensures the stable operation of the transformer body; meanwhile, the installation operation of the transformer is facilitated.

A protected dry transformer, comprising: the transformer comprises a transformer body, wherein a first wiring terminal and a second wiring terminal are arranged on the transformer body; the transformer body is arranged in the protective box, and the first connecting terminal and the second connecting terminal extend out of the protective box; the protective box comprises a first frame and a second frame, wherein the first frame and the second frame are arranged on the protective box and respectively and correspondingly cover the first wiring terminal and the second wiring terminal, a first operation opening is formed in the first frame, and a second operation opening is formed in the second frame.

Foretell protection type dry-type transformer is at the equipment in-process, in packing into the protective housing with the transformer body to stretch out first binding post and second binding post from the protective housing respectively, make the binding post of transformer body expose outside the protective housing. The first connecting terminal and the second connecting terminal are respectively covered by the first frame and the second frame correspondingly, so that an operator only needs to respectively perform wiring operation on the first connecting terminal and the second connecting terminal through the first operation port and the second operation port in the wiring process, the operator does not need to drill into a protection box, foreign matters are effectively prevented from falling or being left on the transformer body, and the transformer body is ensured to be stable and safe to operate; meanwhile, the installation operation of the transformer is facilitated. In addition, the first frame and the second frame are respectively covered in front of the first connecting terminal and the second connecting terminal, so that the first connecting terminal and the second connecting terminal are effectively prevented from being touched by workers by mistake or being touched by mistake, and the connecting terminals of the dry-type transformer are protected from being damaged from the outside; meanwhile, the occurrence of electric shock accidents is effectively avoided.

In one embodiment, the protection type dry transformer further includes a fixing structure, the fixing structure is installed in the first frame or the second frame, and the fixing structure is provided with a lead hole for a cable of an external electrical device to penetrate through.

In one embodiment, the fixing structure includes a base and a fixing beam mounted on the base, the base is mounted in the first frame or the second frame, and the lead hole is disposed on the fixing beam.

In one embodiment, the number of the lead holes is two or more, and the two or more lead holes are arranged at intervals along the length direction of the fixing beam.

In one embodiment, the lead hole is formed on the fixing beam to extend along the length direction of the fixing beam.

In one embodiment, the mounting position of the fixed beam on the base is adjustable.

In one embodiment, the base is provided with a mounting hole, the mounting hole extends along the length direction of the base, and the fixing piece on the fixing beam penetrates into the mounting hole and can move in the mounting hole.

In one embodiment, the first frame includes a first side frame, a second side frame, and a first protection frame connected between the first side frame and the second side frame, the first side frame and the second side frame are both mounted on the protection box and respectively located at two opposite sides of the first connection terminal, and the first operation port is disposed on the first protection frame.

In one embodiment, the second frame includes a third side frame, a fourth side frame and a second protection frame connected between the third side frame and the fourth side frame, the third side frame and the fourth side frame are both mounted on the protection box and respectively located at two opposite sides of the second connection terminal, and the second operation port is disposed on the second protection frame.

In one embodiment, the protection box includes a main frame and a panel, the transformer body is mounted in the main frame, the panel is detachably mounted on the main frame, and the first frame and the second frame are both mounted on the main frame.

In one embodiment, the protective box is provided with heat dissipation holes.

In one embodiment, the protection type dry-type transformer further comprises a hanging ring, and the hanging ring is arranged on the protection box.

In one embodiment, the protection dry-type transformer further comprises a base, the protection box is mounted on the base, and the transformer body is located in the protection box and mounted on the base.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a protective dry-type transformer according to an embodiment;

FIG. 2 is an enlarged view of the structure at circle A in FIG. 1;

fig. 3 is a schematic structural diagram of a protection type dry transformer according to an embodiment;

fig. 4 is a schematic structural diagram of a transformer body according to an embodiment.

100. A protective dry-type transformer; 110. a protective box; 111. a main frame; 112. a panel; 120. a first frame; 121. a first protective frame; 1211. a first support bar; 1212. a first connecting rod; 122. a first side frame; 123. a second side frame; 124. a first operation port; 125. a first reinforcement bar; 130. a second frame; 131. a second protective frame; 1311. a second support bar; 1312. a second connecting rod; 132. a third side frame; 133. a fourth side frame; 134. a second operation port; 135. a second reinforcement bar; 140. a transformer body; 141. a first connection terminal; 142. a second connection terminal; 150. a base; 160. a hoisting ring; 170. a fixed structure; 171. a base; 1711. a base plate; 1712. a support plate; 1713. flanging; 1714. a weight reduction groove; 172. a fixed beam; 173. a wire hole; 174. and (7) installing holes.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In one embodiment, referring to fig. 1 and fig. 3, a protected dry type transformer 100 includes: transformer body 140, shielding box 110, first frame 120 and second frame 130. The transformer body 140 is provided with a first connection terminal 141 and a second connection terminal 142. The transformer body 140 is installed in the protection box 110. The first connection terminal 141 and the second connection terminal 142 both extend out of the protection box 110. The first frame 120 and the second frame 130 are both mounted on the protection box 110 and respectively cover the first connection terminal 141 and the second connection terminal 142. The first frame 120 is provided with a first operation opening 124, and the second frame 130 is provided with a second operation opening 134.

In the assembly process of the dry type transformer 100, the transformer body 140 is placed in the protective casing 110, and the first connection terminals 141 and the second connection terminals 142 respectively extend out of the protective casing 110, so that the connection terminals of the transformer body 140 are exposed out of the protective casing 110. Because the first frame 120 and the second frame 130 respectively cover the first connection terminal 141 and the second connection terminal 142 correspondingly, in the wiring process, an operator only needs to perform wiring operation on the first connection terminal and the second connection terminal through the first operation port 124 and the second operation port 134 respectively without drilling into the protection box 110, thereby effectively avoiding foreign matters from falling or leaving onto the transformer body 140 and ensuring the stable and safe operation of the transformer body 140; meanwhile, the installation operation of the transformer is facilitated. In addition, the first frame 120 and the second frame 130 are respectively covered in front of the first connection terminal 141 and the second connection terminal 142, so that the first connection terminal 141 and the second connection terminal 142 are effectively prevented from being touched by a worker by mistake or being touched by the worker by mistake, and the connection terminals of the dry-type transformer are protected from being damaged from the outside; meanwhile, the occurrence of electric shock accidents is effectively avoided.

It should be noted that, in order to prevent the first connection terminal 141 and the second connection terminal 142 from being directly exposed to the outside, window structures may be respectively installed on the first frame 120 and the second frame 130, so that the surfaces of the first frame 120 and the second frame 130 are maintained in a closed state. Meanwhile, the first connection terminal 141 and the second connection terminal 142 may extend out of the protection box 110 in the following manner: openings with corresponding number and size are formed in the protective box 110 in advance, and when the transformer body 140 is installed in the protective box 110, the first connection terminal 141 and the second connection terminal 142 may respectively protrude from the corresponding openings.

It should be noted that the number of the first connection terminals 141 and the second connection terminals 142 may be determined according to an actual product, and the embodiment is not particularly limited, for example: the number of the first connection terminals 141 and the second connection terminals 142 may be one, two, three or more, and the like. Meanwhile, the first connection terminal 141 and the second connection terminal 142 may be both of a copper bar or a copper bar structure, etc. The first connection terminal 141 and the second connection terminal 142 can be understood as an input terminal and an output terminal of the transformer body 140.

Optionally, the first frame 120 and the second frame 130 may be mounted on the protection box 110 by bolting, welding, clamping, riveting, integral molding, or the like.

Further, referring to fig. 2, the protection type dry transformer 100 further includes a fixing structure 170. The fixing structure 170 is installed in the first frame 120 or the second frame 130, and the fixing structure 170 is provided with a wire hole 173 through which a cable of an external electrical device is inserted. Therefore, when the external electrical device (such as a temperature controller) needs to be connected to the transformer body 140, the cable of the external electrical device can be connected to the transformer body 140 by penetrating the lead hole 173, so that the cable is stably supported on the fixing structure 170, the cable is prevented from being easily disconnected from the transformer body 140 due to the suspension state, the stable connection between the external electrical device and the transformer body 140 is ensured, and the external electrical device is stably operated.

Further, referring to fig. 2, the fixing structure 170 includes a base 171 and a fixing beam 172 installed on the base 171. The base 171 is installed in the first frame 120 or the second frame 130. The lead holes 173 are formed on the fixed beam 172 such that the cables are inserted into the lead holes 173 of the fixed beam 172 during the process of externally connecting the electrical equipment, so that the cables are stably supported on the fixed beam 172. The fixing structure 170 is designed to be a combined structure of the base 171 and the fixing beam 172 in the embodiment, which not only ensures the stable support of the cable, but also is beneficial to raising the height position of the lead hole 173, so that the cable penetrating into the lead hole 173 is easier to be connected to the transformer body 140, and the connection operation on the external electrical equipment is more convenient.

Alternatively, the base 171 may be mounted in the first frame 120 or the second frame 130 by bolting, welding, clamping, riveting, integral molding, or the like. Similarly, the fixing beam 172 may be mounted on the base 171 by bolting, welding, snapping, riveting, integrally forming, or the like.

Specifically, the base 171 is installed in the first frame 120 by welding.

It should be noted that the number of the bases 171 is not particularly limited in this embodiment, and only the fixing beams 172 need to be stably supported. Such as: the number of the pedestals 171 may be one, two, three or more, etc. When the number of the bases 171 is two, the two bases 171 are spaced in the first frame 120, and the fixing beam 172 is installed on the two bases 171, so that the support on the fixing beam 172 is more balanced, which is beneficial to enhancing the overall strength of the fixing structure 170.

In one embodimentReferring to fig. 2, the number of the lead holes 173 is two or more. Two or more lead holes 173 are provided at intervals along the length direction of the fixing beam 172. When the number of the external electrical devices is more than two, or the number of the cables on the same external electrical device is more than two, each cable can be respectively inserted into the corresponding lead hole 173, so that each cable is stably supported on the fixed beam 172, and each cable is also ensured to be separated, thereby avoiding the disorder of line management on the transformer body 140 caused by the interweaving of each cable, and thus being beneficial to the orderly management of the protective dry-type transformer 100. For easy understanding of the length direction of the fixed beam 172, taking fig. 2 as an example, the length direction of the fixed beam 172 is S in fig. 2₁The direction indicated by any arrow.

In one embodiment, referring to fig. 2, the lead holes 173 are formed on the fixing beam 172 to extend along the length direction of the fixing beam 172. Therefore, the lead hole 173 of the present embodiment is a strip-shaped hole or a waist-shaped hole, so that the diameter of the lead hole 173 is effectively enlarged, cables of different sizes can be conveniently inserted, and the application range of the fixing structure 170 is widened.

It should be noted that, when the cable is inserted into the lead hole 173, the bolt or the screw may be inserted into the lead hole 173, and the bolt or the screw is moved left and right, so that the bolt or the screw presses the cable against the hole wall of the lead hole 173; after the compression, the nut is screwed, so that the cable is stably fixed in the lead hole 173, and the cable is prevented from shaking back and forth to cause unstable wiring.

In one embodiment, referring to fig. 2, the mounting position of the fixing beam 172 on the base 171 is adjustable, so that a reasonable distance is kept between the fixing beam 172 and the transformer body 140 by adjusting the mounting position of the fixing beam 172 on the base 171, thereby better connecting cables on the external electrical equipment to the transformer body 140.

It should be noted that the adjustable implementation of the fixing beam 172 on the base 171 is various, such as: the fixed beam 172 is matched with the base 171 in a sliding block and guide rail mode, and a screw rod structure is screwed on the fixed beam 172; alternatively, a plurality of hole-shaped structures are arranged on the base 171 at intervals along the length direction thereof, and the fixing beams 172 are installed in holes at different positions to realize position adjustment; alternatively, the base 171 may be provided with a waist-shaped hole or a strip-shaped hole so that the fixing member of the fixing beam 172 can move forward and backward in the hole.

Specifically, referring to fig. 2, the base 171 is provided with a mounting hole 174. The mounting hole 174 extends along the longitudinal direction of the base 171. The fasteners on the mounting beam 172 pass through the mounting holes 174 and are movable within the mounting holes 174. Therefore, the mounting hole 174 of the present embodiment is a kidney-shaped hole or a strip-shaped hole. Therefore, during the adjustment, the fixing member is moved in the mounting hole 174 along the length direction of the base 171, so that the fixing beam 172 maintains a desired distance from the transformer body 140; after movement, the fixture is locked so that the fixed beam 172 is stabilized in the adjusted position. For the convenience of understanding the longitudinal direction of the base 171, taking fig. 2 as an example, the longitudinal direction of the base 171 is S in fig. 2₂The direction indicated by any arrow. In addition, the fixing member may be a bolt, a screw, a bolt, or the like.

In one embodiment, referring to fig. 2, the base 171 includes a bottom plate 1711, a supporting plate 1712 and a flange 1713, the flange 1713 is mounted on the bottom plate 1711 through the supporting plate 1712, and the mounting hole 174 is opened on the flange 1713. The installation mode of the flanging 1713 on the supporting plate 1712 can be a combined connection mode such as bolt connection, clamping connection, riveting connection, pin connection and the like; or be integrally formed. When the flange 1713 is integrally connected with the supporting plate 1712, the flange 1713 may be formed by bending the supporting plate 1712 away from the end of the base plate 1711.

Further, referring to fig. 2, the weight-reducing grooves 1714 are disposed on the supporting plate 1712, which is not only beneficial to saving the manufacturing material of the base 171, but also beneficial to reducing the weight of the base 171, thereby facilitating the light weight of the whole protective dry-type transformer 100.

In one embodiment, referring to fig. 1, the first frame 120 includes a first side frame 122, a second side frame 123 and a first protection frame 121 connected between the first side frame 122 and the second side frame 123. The first side frame 122 and the second side frame 123 are both mounted on the protection box 110 and are respectively located at two opposite sides of the first connection terminal 141. The first operation opening 124 is disposed on the first protection frame 121. In the embodiment, the structure of the first frame 120 is reasonably designed, so that the first connection terminal 141 is better protected in the first frame 120; and simultaneously, the operator can better operate the first connection terminal 141 through the first operation opening 124 on the first protection frame 121.

Further, referring to fig. 1, the first protection frame 121 includes two first support rods 1211 and two first connection rods 1212, the two first support rods 1211 are respectively connected to the first side frame 122 and the second side frame 123, and the two first connection rods 1212 are connected between the two first support rods 1211 at intervals. The two first connecting rods 1212 and the two first support rods 1211 define the first operation opening 124 therebetween, so that the number of the first protection frame 121 is reduced while the structural strength of the first protection frame 121 is ensured.

Further, referring to fig. 1, the first protection frame 121 further includes a first reinforcing rod 125, and the first reinforcing rod 125 is connected between the two first support rods 1211 to enhance the overall structural strength of the first protection frame 121 and improve the stability of the overall structure.

In one embodiment, referring to fig. 3, the second frame 130 includes a third side frame 132, a fourth side frame 133 and a second protection frame 131 connected between the third side frame 132 and the fourth side frame 133, the third side frame 132 and the fourth side frame 133 are both mounted on the protection box 110 and respectively located at two opposite sides of the second connection terminal 142, and the second operation port 134 is disposed on the second protection frame 131. Similarly, the second connection terminal 142 is better protected in the second frame 130 by reasonably designing the structure of the second frame 130; and simultaneously, the operator can better operate the second connection terminal 142 through the second operation port 134 on the second protection frame 131.

Further, referring to fig. 3, the second protection frame 131 includes two second supporting rods 1311 and two second connecting rods 1312, the two second supporting rods 1311 are respectively connected to the third side frame 132 and the fourth side frame 133, and the two second connecting rods 1312 are connected between the two second supporting rods 1311 at intervals. The second operation hole 134 is defined between the two second connecting rods 1312 and the two second supporting rods 1311, so that the number of the second protection frame 131 is reduced on the premise of ensuring the structural strength of the second protection frame 131.

Further, referring to fig. 3, the second protection frame 131 further includes a second reinforcing rod 135, and the second reinforcing rod 135 is connected between the two second supporting rods 1311 to enhance the overall structural strength of the second protection frame 131 and improve the stability of the overall structure.

In one embodiment, referring to fig. 1, the protective box 110 includes a main frame 111 and a panel 112. The transformer body 140 is installed in the main frame 111. The panel 112 is detachably attached to the main frame 111. First frame 120 and second frame 130 are all installed on body frame 111, so, through detachable design for the operating personnel conveniently demolish panel 112 from body frame 111, and the operating personnel of being convenient for observes and maintains transformer body 140 equipment.

Alternatively, the panels 112 may be bolted, pinned, snapped or otherwise removably attached to the frame 111.

In one embodiment, heat dissipation holes (not shown) are formed in the protection box 110, so that the heat dissipation performance in the protection box 110 is improved through the heat dissipation holes, and the stable operation of the transformer body 140 is ensured.

In one embodiment, referring to fig. 1, the protected dry transformer 100 further includes a lifting ring 160. The hanging ring 160 is mounted on the protection box 110. In this way, the whole protection type dry transformer 100 can be transported by hooking the crane to the hanging ring 160 during transportation.

Specifically, the hanging ring 160 is disposed on the top of the shielding box 110.

In one embodiment, referring to fig. 4, the protected dry transformer 100 further includes a base 150. The shielding box 110 is mounted on the base 150. Transformer body 140 is located protective housing 110 to install on base 150, so, lifts the height of protective housing 110 and transformer body 140 through base 150, and the fork truck of being convenient for can insert protective housing 110 bottom for protection type dry-type transformer 100 complete machine is carried more easily.

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 represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "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, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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 implicitly indicating 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," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate 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.

Claims (10)

1. A protected dry transformer, comprising:

the transformer comprises a transformer body, wherein a first wiring terminal and a second wiring terminal are arranged on the transformer body;

the transformer body is arranged in the protective box, and the first connecting terminal and the second connecting terminal extend out of the protective box;

the protective box comprises a first frame and a second frame, wherein the first frame and the second frame are arranged on the protective box and respectively and correspondingly cover the first wiring terminal and the second wiring terminal, a first operation opening is formed in the first frame, and a second operation opening is formed in the second frame.

2. The protected dry type transformer of claim 1, further comprising a fixing structure installed in the first frame or the second frame, wherein the fixing structure is provided with a wire hole for a cable of an external electrical device to pass through.

3. The protected dry-type transformer according to claim 2, wherein the fixing structure comprises a base and a fixing beam mounted on the base, the base is mounted in the first frame or the second frame, and the wire hole is disposed on the fixing beam.

4. The protected dry type transformer according to claim 3, wherein the number of the lead holes is two or more, and the two or more lead holes are provided at intervals along a length direction of the fixing beam.

5. The protected dry transformer of claim 3, wherein the lead hole is provided on the fixing beam to extend along a length direction of the fixing beam.

6. The protected dry transformer of claim 3, wherein a mounting position of the fixing beam on the base is adjustable.

7. The protected dry type transformer according to claim 6, wherein the base has a mounting hole extending along a length direction of the base, and the fixing member of the fixing beam penetrates the mounting hole and is movable in the mounting hole.

8. The protected dry-type transformer according to any one of claims 1 to 7, wherein the first frame comprises a first side frame, a second side frame and a first protection frame connected between the first side frame and the second side frame, the first side frame and the second side frame are mounted on the protection box and are respectively located at two opposite sides of the first connection terminal, and the first operation port is disposed on the first protection frame; and/or the presence of a gas in the gas,

the second frame comprises a third side frame, a fourth side frame and a second protection frame connected between the third side frame and the fourth side frame, the third side frame and the fourth side frame are arranged on the protection box and are respectively positioned on two opposite sides of the second wiring terminal, and the second operation port is arranged on the second protection frame.

9. The protected dry-type transformer according to any one of claims 1 to 7, wherein the protective case comprises a main frame and a panel, the transformer body is mounted in the main frame, the panel is detachably mounted on the main frame, and the first frame and the second frame are both mounted on the main frame.

10. A protected dry-type transformer according to any one of claims 1 to 7, wherein the protecting box is provided with heat dissipating holes; and/or the presence of a gas in the gas,

the protective dry-type transformer also comprises a lifting ring, and the lifting ring is arranged on the protective box; and/or the presence of a gas in the gas,

the protective dry-type transformer further comprises a base, the protective box is arranged on the base, and the transformer body is located in the protective box and arranged on the base.

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