CN216119812U - Insulating protection casing of distribution transformer and mounting tool - Google Patents

Abstract

The utility model relates to an insulating protective cover of a distribution transformer and an installation tool, belonging to the technical field of power devices and comprising a first cover body and a second cover body; the second cover body is connected with the first cover body and forms an included angle with the first cover body; the inner side plate of the first cover body is a first movable plate which can be opened, the inner side plate of the second cover body is a second movable plate which can be opened, and the inner side of the cavity can be opened after the first movable plate and the second movable plate are opened; the first movable plate and the second movable plate are both provided with a rebound structure; the mounting tool is used to operate the shield. The utility model has the beneficial effects that: the application is wide; the interference with other foreign matters such as adjacent wiring pile heads or wiring can be effectively avoided, the application range of the protective cover is improved, and particularly the working conditions that the specification and the size of the wiring column heads are different and the phase sequence spacing of the wiring column heads is different are improved; the protective cover can be stably supported by the mounting tool, so that the protective cover is supported and fixed, and is not easy to fall off in an opening state, and the mounting is finished.

Description

Insulating protection casing of distribution transformer and mounting tool

Technical Field

The utility model relates to the technical field of power devices, in particular to an insulating protective cover of a distribution transformer and an installation tool.

Background

The distribution transformer is used as important equipment in a power distribution network line, the insulation protection cover is additionally arranged on a transformer wiring end, so that the insulation protection of the distribution transformer wiring end can be enhanced, the power failure accident and the electric shock and personal casualty accident of electric power equipment are prevented from being caused by artificial touch, electricity stealing, small animals or sundries contact and the like, and the huge economic loss is avoided.

When the insulation protective cover is installed, a connection end of a wiring pile head and a connection end of a wiring are required to be wrapped, an included angle is formed between the wiring pile head and the connection of a part of distribution transformers, for example, the wiring pile head and the connection end are perpendicular to each other, the included angle is required to be formed in a cavity inside the insulation protective cover, especially, under the constraint of factors such as different specifications and sizes of low-voltage connection wire column heads of transformers with different rated capacities, different phase sequence distances of the connection column heads and the like, the span of the insulation protective cover after a shielding part of a cover body wiring terminal is opened in the installation process is required to be not more than the phase distance of the wiring terminals of the transformers, and the conventional hard and transparent insulation protective cover does not have the functions.

In order to solve the problems, the utility model provides an insulating protective cover of a distribution transformer and an installation tool.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the present invention provides an insulation shield for a distribution transformer, comprising a first shield body and a second shield body; the second cover body is connected to the first cover body and forms an included angle with the first cover body, and cavities in the first cover body and the second cover body are communicated with each other to form a cavity; one end of the first cover body, which is far away from the second cover body, is provided with a wire passing hole through wiring, and one end of the second cover body, which is far away from the first cover body, is provided with a pile passing hole through a wiring pile head; the inner side plate of the first cover body is a first movable plate which can be opened, the inner side plate of the second cover body is a second movable plate which can be opened, and the inner side of the cavity can be opened after the first movable plate and the second movable plate are opened; the first and second movable panels each have a resilient structure for closing the first or second movable panel.

Preferably, the first movable plate and the second movable plate are arranged to be expandable towards the same side of the shield, so that the expanded second movable plate can block the expanded first movable plate from rebounding.

Preferably, the first cover and the second cover are perpendicular to each other.

Preferably, a plurality of temperature measuring holes are arranged on the side surface of the first cover body and/or the second cover body.

Preferably, the line passing hole and/or the pile passing hole are/is detachably provided with a phase sequence identification silica gel sheet.

Preferably, the first cover and the second cover are made of insulating and transparent materials.

There is also provided an installation tool for operating a distribution transformer insulation shield, the installation tool characterized by: comprises a rod body structure and a chuck connected with the end part of the rod body structure; the chuck comprises a first clamping part and a second clamping part; the first clamping part comprises a supporting part abutted to the inner wall of the first cover body, a first supporting leg and a second supporting leg, the first supporting leg and the second supporting leg extend along the horizontal direction, the first supporting leg is used for clamping and connecting the second movable plate after being opened and blocking the second movable plate from rebounding, and the second supporting leg is integrally connected to the second clamping part; the second clamping part extends along the vertical direction and is used for clamping the fixing part of the second cover body.

Preferably, a first groove is formed in the side surface of the first supporting leg, the first groove is clamped at the end part of the second movable plate, and/or a second groove is formed in the end surface of the second supporting leg, and the second groove is clamped at the fixing part of the second cover body.

Preferably, the first clamping portion is U-shaped.

Preferably, the rod body structure comprises a support rod and an insulating rod; one end of the supporting rod is rotatably connected with the chuck, so that the chuck rotates in a first plane relative to the supporting rod, the other end of the supporting rod is rotatably connected with the insulating rod, so that the supporting rod rotates in a second plane relative to the insulating rod, and the first plane and the second plane are perpendicular to each other.

The utility model has the following beneficial effects:

1. the first cover body and the second cover body are arranged in an included angle mode, so that the included angle is formed in the cavity inside the protective cover, the protective cover can be applied to the working condition that the wiring pile head and the wiring form the included angle, and the application is wider;

2. the first movable plate and the second movable plate are arranged in an openable mode, and after the first movable plate and the second movable plate are opened, the inner side of the cavity of the protective cover can be opened, so that the protective cover can be directly sleeved on the wiring pile head and wiring from the outside in the running state of the transformer, live working is completed, and the installation efficiency is high; meanwhile, the first movable plate and the second movable plate are respectively the inner side plates of the first cover body and the second cover body, the cavity can be completely opened by folding the first movable plate and the second movable plate for about 90 degrees, the width of the protective cover can not be obviously increased after the protective cover is opened, the interference with other foreign objects such as adjacent wiring pile heads or wiring can be effectively avoided, the application range of the protective cover is improved, and the protective cover is particularly suitable for occasions with adjacent wiring pile heads or wiring intervals being close;

3. according to the mounting tool, the first cover body is supported by the first clamping part, the second movable plate is supported by the first support leg, the second cover body is vertically extended and fixed by the second clamping part, and the three supporting positions are not in the same plane, so that a stable space supporting structure is formed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the principles of the utility model.

FIG. 1 is a schematic view of an installation tool gripping and opening a shield;

FIG. 2 is a schematic view of the shield when closed;

FIG. 3 is a schematic view of the shield when open;

FIG. 4 is a schematic structural view of the installation tool;

FIG. 5 is another schematic structural view of the installation tool;

FIG. 6 is a schematic view of the structure of the chuck;

in the figure: 1-a first cover body, 2-a second cover body, 3-a line-passing hole, 4-a pile-passing hole, 5-a first movable plate, 6-a second movable plate, 7-a temperature-measuring hole, 8-a phase sequence identification silica gel sheet, 9-a chuck, 10-a transition connecting piece, 11-a supporting rod, 12-an insulating rod, 13-a first pressing gear bolt, 14-a first lock catch, 15-a sleeve type connecting piece, 16-a second pressing gear bolt, 17-a second lock catch and 18-a clamping bulge,

91-first clip, 92-second clip, 93-first leg, 94-second leg, 95-first groove, 96-second groove, 97-support.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-6, an insulation shield for a distribution transformer comprises a first housing 1 and a second housing 2; the second cover body 2 is connected to the first cover body 1 and forms an included angle with the first cover body 1, namely, one end of the first cover body 1 is provided with an opening, the other end of the first cover body is closed, the second cover body 2 penetrates through one side of the first cover body 1, and cavities in the first cover body 1 and the second cover body 2 are mutually communicated to form a cavity; one end of the first cover body 1, which is far away from the second cover body 2, is provided with a wire passing hole 3 through wiring, and one end of the second cover body 2, which is far away from the first cover body 1, is provided with a pile passing hole 4 through a wiring pile head; the inner side plate of the first cover 1 is a first movable plate 5 which can be opened, the inner side plate of the second cover 2 is a second movable plate 6 which can be opened, and the inner side of the cavity can be opened after the first movable plate 5 and the second movable plate 6 are opened; the first flap 5 and the second flap 6 each have a resilient structure for closing the first flap 5 or the second flap 6.

By adopting the structure, the first cover body 1 and the second cover body 2 are arranged at an included angle, so that the inner cavity of the protective cover has the included angle, and the protective cover can be applied to the working condition that the wiring pile head and the wiring form the included angle, and is more widely applied; the first movable plate 5 and the second movable plate 6 are both arranged in an openable manner, and after the first movable plate and the second movable plate are opened, the inner side of the cavity of the protective cover can be opened, so that the protective cover can be directly sleeved on the wiring pile head and wiring from the outside in the running state of the transformer, the live-line operation is completed, and the installation efficiency is high; meanwhile, the first movable plate 5 and the second movable plate 6 are respectively inner side plates of the first cover body 1 and the second cover body 2, the first movable plate 5 and the second movable plate 6 can be folded by about 90 degrees to completely open the cavity, the width of the protective cover can not be obviously increased after the protective cover is opened, the interference with other foreign objects such as adjacent wiring pile heads or wiring can be effectively avoided, the application range of the protective cover is expanded, and the protective cover is particularly suitable for occasions with adjacent wiring pile heads or wiring intervals being close.

The protective cover performs shielding type insulation protection based on the structural characteristics of the transformer wiring pile head, can effectively realize insulation treatment on the wiring pile head, avoids operation accidents such as monopole grounding or alternate short circuit caused by foreign matters and small animal climbing in the operation of the transformer, and improves the reliability of power supply. In addition, the unique cover body opening structure ensures that the protective cover is not obstructed by the gaps of the inter-phase pile heads of the transformer when in an opening state, and easily passes over the wiring terminal and the outgoing line to complete the installation of the protective cover; the ground potential installation accessory matched with the protective cover enables an operator to install the protective cover through a ground potential insulating rod installation method, so that the operator can complete installation of the protective cover on the ground, the protective cover is efficient and convenient, and the production and maintenance cost is reduced.

It should be noted that the inner side refers to the inner side of the included angle between the first cover 1 and the second cover 2, generally, the second cover 2 is connected to a position close to the closed end of the first cover 1, in this case, the protective cover is L-shaped, in this case, the inner side refers to a single inner side; if the second cover body 2 is connected to the middle part of the first cover body 1, the protective cover is T-shaped, the inner side can be the inner side of two included angles at two sides of the second cover body 2, and the protective cover can be applied to the working condition that a wiring pile head and wiring are T-shaped; when the wiring pile head and the wiring have dislocation or the upper cover body and the lower cover body of the protective cover need to be configured in a dislocation way under the condition that the space requires, the first cover body 1 and the second cover body 2 can be arranged in a dislocation way or one of the two cover bodies is in a local contraction structure.

In the embodiment, the first movable plate 5 and the second movable plate 6 can be opened towards the same side of the protective cover, so that the opened second movable plate 6 can block rebounding of the opened first movable plate 5, the rebounding of the first movable plate 5 is blocked through the second movable plate 6, the supporting legs are not required to be additionally and additionally arranged for independently clamping the first movable plate 5, the structure of the mounting tool is simpler, the processing difficulty is lower, the reduction of the production cost is facilitated, and the simultaneous operation is simpler and more convenient.

In one embodiment, the first cover body 1 and the second cover body 2 are perpendicular to each other, and can be applied to the working condition that the wiring pile head is perpendicular to the wiring.

Of course, besides, an acute angle or an obtuse angle may be formed between the first cover 1 and the second cover 2.

In one embodiment, the side surfaces of the first cover body 1 and/or the second cover body 2 are provided with a plurality of temperature measuring holes 7, the size of a single temperature measuring hole 7 is not too large, the structural strength and the protective performance of the cover bodies are prevented from being influenced, the plurality of temperature measuring holes 7 can be arranged in a linear arrangement mode, the operation of a thermal imaging detector is not influenced, and the convenience and the accuracy of temperature measurement can be improved.

In one embodiment, the line passing hole 3 and/or the pile passing hole 4 are/is detachably provided with a phase sequence identification silica gel sheet 8, the phase sequence identification silica gel sheet 8 distinguishes the phase sequence of each connection line through different colors such as red, green and blue, and meanwhile, the end part of the phase sequence identification silica gel sheet 8 is gradually reduced, so that the end part is attached to the connection line, and the dustproof and foreign matter-proof effects are achieved.

In a further scheme, one side of the protective cover, which is close to the wire passing hole 3 and/or the pile passing hole 4, is provided with an oval clamping hole, the phase sequence identification silica gel sheet 8 is provided with a clamping bulge 18 which is matched with the clamping hole and has an oval cross section, and the phase sequence identification silica gel sheet 8 is fixedly connected with the protective cover through the clamping bulge 18 and the clamping hole; by the arrangement, the installation and the disassembly operation between the phase sequence recognition silica gel sheet 8 and the protective cover are convenient; specifically, 4 clamping holes corresponding to each phase sequence identification silica gel sheet 8 are uniformly formed in the protective cover at intervals in the circumferential direction, and 4 clamping protrusions 18 are uniformly formed in the phase sequence identification silica gel sheets 8 at intervals in the circumferential direction; so set up, both guaranteed the installation between phase sequence discernment silica gel piece 8 and the protection casing and dismantled the operation side swiftly, guaranteed again that the connection between the two is reliable and stable.

In one embodiment, the first cover body 1 and the second cover body 2 are made of insulating and transparent materials, specifically, transparent materials such as modified ABS, ultraviolet-resistant PET, ultraviolet-resistant PC, weather-resistant nylon and the like can be adopted, so that an inspector can directly observe the operation state of the equipment, find the conditions of equipment heating, wiring terminal loosening, pile head cracking, strong fire occurrence traces and the like in time, improve the operation inspection quality and ensure the operation safety of a power grid; meanwhile, the material has certain hardness, good structural support property and relatively high thermal deformation temperature, and the shielding and isolating operation state of the equipment wiring pile head is always kept during operation, so that the ventilation and heat dissipation requirements during the operation of the equipment are met; compared with the traditional flexible material, the material can realize live working.

In one embodiment, the first cover 1 and the second cover 2 are integrally formed, one end of the first movable plate 5 is integrally connected to the first cover 1, and slits are formed between the other three ends of the first movable plate and the first cover 1, one end of the second movable plate 6 is integrally connected to the second cover 2, and slits are formed between the other three ends of the second movable plate and the second cover 2, and the elastic restoring force of the material itself is used for resilience, and the first movable plate 5 or the second movable plate 6 is elastically deformed when being opened, and the deformation force urges the first movable plate 5 or the second movable plate 6 to automatically rebound and be closed after the external force is released.

Certainly, the first movable plate 5 and the first cover 1, and the second movable plate 6 and the second cover 2 may also be of two split structures, and when the two split structures are connected through a torsion spring, an elastic member, a magnet or other recoverable and fastening structures, the first movable plate 5 or the second movable plate 6 can obtain a restoring force while being opened under the action of an external force or a grasping, clamping or other tool, and can be recovered after the external force is released, or the grasping, clamping or other tool is used to operate the first movable plate 5 or the second movable plate 6, and the recovery of the first movable plate 5 or the second movable plate 6 is completed by using a magnet to absorb or fasten or the like.

In further embodiments, the cross-section of the first shield 1 or the second shield 2 has a circular, oval, square chamfered configuration or other irregular arc shape.

As shown in fig. 4-6, the present invention also provides an installation tool for operating an insulating protective cover of a distribution transformer, characterized in that: comprises a rod body structure and a chuck 9 connected with the end part of the rod body structure; the chuck 9 includes a first clamping portion 91 and a second clamping portion 92; the first clamping portion 91 comprises a supporting portion 97 abutting against the inner wall of the first cover 1, a first leg 93 and a second leg 94 extending along the horizontal direction, the first leg 93 is used for clamping the second opened movable plate 6 and blocking the rebound of the second movable plate 6, and the second leg 94 is integrally connected to the second clamping portion 92; the second clamping portion 92 extends in a vertical direction and is used for clamping a fixing portion of the second cover 2.

Adopt above-mentioned structure, support the first cover body 1 through first clamping part 91, support second fly leaf 6 through first stabilizer blade 93, cover body 2 through the fixed second of the vertical extension of second clamping part 92, and three supported position is not in same plane to form stable space supporting structure, when blockking that second fly leaf 6 kick-backs, the stable protection casing that supports is the guarantee that realizes supporting fixed protection casing and be difficult for droing under the open mode, accomplish the installation.

Through the mounting tool, the installation of protective cover can be accomplished through supporting ground potential operation accessory in ground to the operation personnel under the electric wire netting running state, economy, high efficiency, safety.

In one embodiment, a first groove 95 is formed in a side surface of the first leg 93, the first groove 95 is clamped at an end portion of the second movable plate 6, and/or a second groove 96 is formed in an end surface of the second leg 94, the second groove 96 is clamped at a fixing portion of the second cover 2, the fixing portion is a portion of the second cover 2 that cannot move except for the second movable plate 6, the groove structure is used for clamping, and a structure such as a stopper or a clamp plate may be adopted for the first time.

In one embodiment, the first clamping portion 91 is U-shaped, and the cross section of the first cover 1 in this embodiment is rectangular, so the U-shaped first clamping portion 91 can better fit the inner wall of the first cover 1 to perform a better supporting function, and certainly, if the first cover 1 adopts other structures such as a circular cross section, the first clamping portion 91 can change along with the change, and can stably support.

In one embodiment, the rod structure includes a support rod 11 and an insulating rod 12; one end of the support rod 11 is rotatably connected with the chuck 9 so that the chuck 9 rotates in a first plane relative to the support rod 11, and the other end of the support rod 11 is rotatably connected with the insulating rod 12 so that the support rod 11 rotates in a second plane relative to the insulating rod 12, wherein the first plane and the second plane are perpendicular to each other. In this embodiment, the first plane may be a horizontal plane, so that the chuck 9 can be horizontally rotated relative to the rod structure to perform angle adjustment, and the second plane is a vertical plane, so that the chuck 9 can be vertically rotated relative to the rod structure to perform angle adjustment.

In a specific scheme, a first pressing gear bolt 13 perpendicular to a plane enclosed by the chuck 9 is arranged at a position where the chuck 9 is connected with the support rod 11, the plane enclosed by the plane is a plane enclosed by the U-shaped first clamping part 91, a transition connecting piece 10 can be arranged between the chuck 9 and the support rod 11, the transition connecting piece 10 is perpendicular to the plane enclosed by the chuck 9, has a certain radian, and avoids the phase sequence recognition silica gel sheet 8; a first lock catch 14 is arranged at the position where the support rod 11 is connected with the chuck 9; the first lock catch 14 is engaged with the first pressing gear bolt 13 and can rotate around the first pressing gear bolt 13 under the action of external force; and/or the end of the support rod 11 is provided with a sleeve type connecting piece 15, and a second pressing gear bolt 16 parallel to the plane enclosed by the chuck 9 is arranged on the connecting piece; one end of the insulating rod 12 is provided with a second lock catch 17; the second lock catch 17 is engaged with the second pressing pinion bolt 16 and is rotatable around the second pressing pinion bolt 16 by an external force.

First pressing gear bolt 13, second pressing gear bolt 16 are mechanical field's conventional part, press the bolt from the tail end, and the gear cap of first pressing gear bolt 13 head will pop out from the gear hole, and the position of rotatable adjustment chuck 9 this moment, after the adjustment is accomplished, will press the gear cap of gear bolt head and press back in first gear hole, realize the locking, or set up reset spring in the middle part of pressing the gear bolt, automatic re-setting locking under the effect of spring force. The pressing gear bolt can slide along the axial direction of the pressing gear bolt, and the section of the middle part of the pressing gear bolt is square and is clamped on the first lock catch 14 or the sleeve-type connecting piece 15 to limit the circumferential displacement of the pressing gear bolt.

The mounting tool drives the chuck 9 and the supporting rod 11 to turn through two groups of push type gear rotating shafts, can realize that the level reaches four directions from top to bottom and moves about during installation, does not receive the influence of operation angle when guaranteeing field operation, and this transformer protection casing and supporting insulating bar scientific and practical install fast, and the cost is lower, disappears application value such as scarce fast, has extensive use and popularization meaning.

The operation process is as follows: firstly, manually opening the first movable plate 5 and the second movable plate 6, as shown in fig. 1 and fig. 3, positioning the second movable plate 6 at the inner side of the first movable plate 5, extending the first clamping portion 91 of the cartridge 9 into the wire passing hole 3 of the first cover body 1, and enabling the first support leg 93 of the cartridge 9 to clamp the second movable plate 6, enabling the second clamping portion 92 of the cartridge 9 to clamp the fixing portion of the second cover body 2, opening the first movable plate 5 and the second movable plate 6, opening the inner side of the cavity, and keeping the whole protective cover in an open state, so that the protective cover can pass through a transformer wiring pile head and wiring, and completing shielding of a transformer column head and wiring and fixing at the top end of a transformer;

the first pressing gear bolt 13 arranged on one side of the chuck 9 is matched with the first lock catch 14 arranged at the position where the rod body structure is connected with the chuck 9, so that the chuck 9 can horizontally rotate relative to the rod body structure to adjust the angle; the matching of a second pressing gear bolt 16 arranged on the connecting piece and a second lock catch 17 arranged at the upper end of the insulating rod 12 can realize that the chuck 9 and the supporting rod 11 vertically rotate relative to the insulating rod 12 to adjust the angle; an operator lifts the insulating rod 12 by hand to carry a matching tool and a protective cover, releases the tool after crossing the wiring of the transformer, so that the protective cover can shield the transformer column head and fix the wiring, and the equipment is installed.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

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 application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of description and are not intended to limit the scope of the utility model. Other variations or modifications will occur to those skilled in the art based on the foregoing disclosure and are within the scope of the utility model.

Claims (10)

1. The utility model provides a distribution transformer insulation protection casing which characterized in that: comprises a first cover body (1) and a second cover body (2);

the second cover body (2) is connected to the first cover body (1) and forms an included angle with the first cover body (1), and cavities in the first cover body (1) and the second cover body (2) are communicated with each other to form a cavity; one end of the first cover body (1) far away from the second cover body (2) is provided with a wire passing hole (3) for passing through wiring, and one end of the second cover body (2) far away from the first cover body (1) is provided with a pile passing hole (4) for passing through a wiring pile head;

the inner side plate of the first cover body (1) is a first movable plate (5) which can be opened, the inner side plate of the second cover body (2) is a second movable plate (6) which can be opened, and the inner side of the cavity can be opened after the first movable plate (5) and the second movable plate (6) are opened;

the first flap (5) and the second flap (6) each have a resilient structure for closing the first flap (5) or the second flap (6).

2. The distribution transformer insulation shield of claim 1, wherein: the first movable plate (5) and the second movable plate (6) can be arranged in an opening mode towards the same side of the protective cover, so that the second movable plate (6) after opening can block the first movable plate (5) after opening to rebound.

3. The distribution transformer insulation shield of claim 1, wherein: the first cover body (1) and the second cover body (2) are perpendicular to each other.

4. The distribution transformer insulation shield of claim 1, wherein: the side surface of the first cover body (1) and/or the second cover body (2) is provided with a plurality of temperature measuring holes (7).

5. The distribution transformer insulation shield of claim 1, wherein: the line passing hole (3) and/or the pile passing hole (4) are/is detachably provided with a phase sequence identification silica gel sheet (8).

6. The distribution transformer insulation shield of claim 1, wherein: the first cover body (1) and the second cover body (2) are made of insulating and transparent materials.

7. An installation tool for operating a distribution transformer insulation shield according to any one of claims 1 to 6, characterized in that: comprises a rod body structure and a chuck (9) connected with the end part of the rod body structure;

the chuck (9) comprises a first clamping part (91) and a second clamping part (92);

the first clamping part (91) comprises a supporting part (97) abutted to the inner wall of the first cover body (1), a first supporting leg (93) and a second supporting leg (94) extending along the horizontal direction, the first supporting leg (93) is used for clamping the expanded second movable plate (6) and blocking the rebound of the second movable plate (6), and the second supporting leg (94) is integrally connected to the second clamping part (92);

the second clamping part (92) extends along the vertical direction and is used for clamping a fixing part of the second cover body (2).

8. An installation tool as claimed in claim 7, wherein: a first groove (95) is formed in the side surface of the first supporting leg (93), and the first groove (95) is clamped at the end part of the second movable plate (6) and/or

The end face of the second supporting leg (94) is provided with a second groove (96), and the second groove (96) is clamped on the fixing part of the second cover body (2).

9. An installation tool as claimed in claim 7, wherein: the first clamping part (91) is U-shaped.

10. An installation tool as claimed in claim 7, wherein: the rod body structure comprises a support rod (11) and an insulating rod (12); one end of the support rod (11) is rotatably connected with the clamping head (9) so that the clamping head (9) rotates in a first plane relative to the support rod (11), and the other end of the support rod is rotatably connected with the insulating rod (12) so that the support rod (11) rotates in a second plane relative to the insulating rod (12), wherein the first plane and the second plane are perpendicular to each other.

Images