CN110729097B

CN110729097B - Light-transmitting box-type transformer

Info

Publication number: CN110729097B
Application number: CN201910982126.6A
Authority: CN
Inventors: 戴敏
Original assignee: JIANGSU HAIKAI ELECTRIC CO Ltd
Current assignee: JIANGSU HAIKAI ELECTRIC CO Ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2022-07-22
Anticipated expiration: 2039-10-16
Also published as: CN110729097A

Abstract

The invention discloses a light-transmitting box-type transformer, belonging to the field of transformers, which comprises a transformer body, wherein the upper end and the lower end of the transformer body are respectively provided with a top plate and a bottom plate, the upper end of the transformer body is connected with a sleeve, the sleeve comprises an insulating pipe body and a plurality of insulating umbrellas, the inner side wall of each insulating umbrella is connected with a light-transmitting layer, the surface of each insulating umbrella is wrapped with a light-transmitting layer, the light-transmitting layer comprises a healing layer and a transparent layer, and a transparent self-healing body is arranged in the healing layer. Thereby taking maintenance measures in time.

Description

Light-transmitting box-type transformer

Technical Field

The invention relates to the field of transformers, in particular to a light-transmitting box type transformer.

Background

A Transformer (Transformer) is a device that changes an alternating voltage by using the principle of electromagnetic induction, and its main components are a primary coil, a secondary coil, and an iron core (magnetic core).

The box type transformer (generally referred to as a box transformer for short) is designed by centralizing the traditional transformer in a box type shell, has small volume, light weight, low noise, low loss and high reliability, and is widely applied to residential districts, commercial centers, light stations, airports, factories and mines, enterprises, hospitals, schools and other places. The box-type transformer is used as a whole set of distribution equipment and is formed by organically combining a transformer, high-voltage control equipment and low-voltage control equipment. The basic principle of the transformer is that reasonable assembly is carried out according to a specified sequence through a pressure starting system, an armored wire, a transformer substation full-automatic system, a direct current point and corresponding technical equipment, and all components are installed in a specific waterproof, dustproof and rat-proof completely-sealed toughened box body structure, so that the specific transformer is formed. At present, box-type transformers are widely applied to power engineering construction.

The box-type transformer is not only a transformer, but also a small-sized substation, belongs to a power distribution station and directly provides power for users. Comprises a high-voltage chamber, a transformer chamber and a low-voltage chamber; the high-voltage chamber is a power supply side, is generally 35 kilovolts or 10 kilovolts incoming lines and comprises a high-voltage busbar (highvoltage busbar), a circuit breaker or a fuse, a voltage transformer, a lightning arrester and the like, transformers are arranged in the voltage transformation chamber and are main equipment of a box transformer, a low-voltage busbar (lowvoltage busbar), a low-voltage circuit breaker, a metering device, the lightning arrester and the like are arranged in the low-voltage chamber, and lines are led out from the low-voltage busbar to supply power to users.

The protection of the box-type transformer is specially used for protecting the transformer, is a power automation high and new technology product which integrates multiple functions of protection, monitoring, control, communication and the like and is developed and researched, and is an ideal electrical unit for forming an intelligent box-type transformer. The product is internally provided with a protection library formed by more than twenty standard protection programs, and has complete and powerful acquisition functions (current measurement is realized by protection CT) on voltage and current analog quantity and switching value of primary equipment.

The transformer bushing is a main insulation device outside the transformer box, and the outgoing lines of the transformer winding must penetrate through the insulation bushing to insulate the outgoing lines and the outgoing lines from the transformer shell, and play a role in fixing the outgoing lines. The porcelain bushing is used as a common wiring terminal of the explosion-proof transformer and is used for leading out the enclosed bus. A small gap is kept between the conducting rod and the bushing, and the gap is smaller than 0.5mm, so that the explosion-proof effect is ensured. The temperature of the transformer is high during long-term operation, and the porcelain bushing needs to have good heat resistance and insulation performance. The transformer bushing is one of the current-carrying elements of the transformer, through which a load current flows for a long time during operation of the transformer and through which a short-circuit current flows when a short-circuit occurs outside the transformer. Therefore, the following requirements are placed on the transformer bushing:

(1) must have a defined electrical strength and sufficient mechanical strength;

(2) must have good thermal stability and withstand instantaneous overheating during short circuits;

(3) the appearance is little, the quality is little, sealing performance is good, the commonality is strong and the maintenance of being convenient for.

Ensuring a casing seal is critical to achieving a durable life. The sealing structure position moved by a user in installation and maintenance needs to be carefully restored to the original sealing state, and in addition, the sealing is closely connected, namely the surface of the porcelain bushing is ensured to be intact, and the surface of the porcelain bushing is not allowed to have crack scars.

However, in the actual inspection process, an inspector can only observe the crack condition of the outer surface of the transformer bushing, the inspector is difficult to find the aging crack position inside the transformer bushing, the transformer bushing is generally overhauled regularly, the interval time is long, in the non-overhaul time, after the transformer bushing is aged and cracked, the crack of the transformer bushing expands until reaching the outer surface of the bushing, so that the sealing performance of the whole bushing is failed, and the next overhaul is late.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to solve the problems in the prior art and provides a light-transmitting box-type transformer, wherein a light-transmitting layer and a light-transmitting layer are respectively arranged on the inner wall and the outer surface of a transformer bushing, a healing layer is arranged in the light-transmitting layer, when the inner wall of the transformer bushing is cracked and expanded to the light-transmitting layer, a transparent self-healing body in the healing layer is used for filling the gap to achieve a self-sealing effect, in addition, light beams emitted by the light-transmitting layer can penetrate through the transparent self-healing body from the gap to be emitted outwards, so that a maintainer can easily observe the crack position, and maintenance measures can be taken in time.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A light-transmitting box-type transformer comprises a transformer body, wherein a top plate and a bottom plate are respectively arranged at the upper end and the lower end of the transformer body, a sleeve is connected to the upper end of the transformer body, through holes matched with the sleeve are dug in the top plate, a plurality of radiating fins which are uniformly distributed are fixedly connected to the side end of the transformer body, a mounting foot is fixedly connected to the lower end of the bottom plate, a plurality of hanging rings are fixedly connected to the upper end of the top plate, the sleeve comprises an insulating tube body and a plurality of insulating umbrellas, the lower end of the insulating tube body penetrates through the through holes and is connected with the transformer body, the insulating umbrellas are integrally sleeved on the insulating tube body from top to bottom, the insides of the insulating tube body and the insulating umbrellas are hollow, the inner side walls of the insulating tube body and the insulating tube body are both connected with a polishing layer, the polishing layer comprises a light emitter and a light guide fiber layer, the light emitter is connected to the surface of the light guide fiber layer, insulating umbrella and insulating body surface all wrap up there is the euphotic layer, the euphotic layer includes healing layer and stratum lucidum, and the healing level is between stratum lucidum and insulating umbrella, it is fit to be equipped with transparent self-healing in the healing layer, this scheme sets up the actinic layer and euphotic layer respectively at transformer bushing inner wall and surface to set up healing layer in the euphotic layer, when transformer bushing inner wall fracture and expansion euphotic layer department, utilize the transparent self-healing in the healing layer to fill this gap, reach self sealss effect, in addition, the light beam that the actinic layer sent can be seen through transparent self-healing body by gap department and outwards jets out, make the maintainer change and observe the crack position, thereby in time take maintenance measure.

Furthermore, the transparent self-healing body adopts polyurethane/acrylic acid composite colloid, and a silane coupling agent is added into the polyurethane/acrylic acid composite colloid, so that the durability and the damp-heat aging resistance of the transparent self-healing body are improved.

Further, transparent self-healing body adopts the gluing granule, one side that the gluing granule is close to insulating umbrella is laid and is had the photocatalysis powder, when transformer bushing inner wall fracture and expansion euphotic layer department, the light beam that the photochemization layer sent can be passed through transparent self-healing body by the gap department and outwards jets out, the photocatalysis powder begins the decomposition of catalysis gluing granule after the photic irradiation and dissolves and fill the gap, reach self-sealing effect, the storage of gluing granule is more convenient lasting, the stratum lucidum adopts one-way printing opacity glass, and this one-way printing opacity glass's printing opacity direction is from interior to exterior, box transformer is located the same case inside of house, the ambient light of locating is extremely poor, the transformer surface can not receive the illumination basically, when overhauing, in the maintainer opens the period, the transformer surface just can receive illumination, but the illumination time is shorter, combines one-way printing opacity glass's setting, the influence of the illumination on the adhesive particles on the transformer bushing is negligible.

Further, the healing layer sets up to the latticed of individual layer, the net all adopts silicon dioxide combined material to make, it is equipped with the light shield layer to inlay in the net, the light shield layer both sides are the silica composite bed, and the light beam that the actinic layer sent sees through transparent self-healing body by gap department and outwards jets out, and the silica composite bed can form the reflection effect to some light beams for the maintainer changes and observes the crack position.

Furthermore, all adopt the fusion welding connected mode between insulating umbrella and insulating body and the net, connect inseparabler, stable good, mechanical strength is high, insulating umbrella and insulating body surface all are provided with the roughness layer, the fusion welding of the net of being convenient for.

Further, the illuminator is provided with a plurality ofly, and a plurality of illuminators are located the contained angle department of a plurality of insulating umbrellas respectively, and is a plurality of adopt parallelly connected mode between the illuminator, the setting of a plurality of illuminators can prevent that the self-splitting of optical fiber layer from leading to light can not conduct smoothly, even the self-splitting of whole optical fiber layer, the multidirectional conduction that can strengthen the light that sets up of a plurality of illuminators to can guarantee to see through the light intensity preferred in gap when transformer bushing inner wall ftractures, parallelly connected between a plurality of illuminators can prevent that single illuminator trouble from leading to the emergence of phenomenon of putting out entirely.

Furthermore, the inner surface and the outer surface of the transparent layer are polished, so that the friction force with the outside is small, the transparent layer is not easy to wear and dust is not easy to accumulate.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme sets up the actinic layer and euphotic layer respectively at transformer bushing inner wall and surface to set up healing layer in the euphotic layer, when transformer bushing inner wall fracture and expansion euphotic layer department, utilize the transparent self-healing body in the healing layer to fill this gap, reach self sealss effect, in addition, the light beam that the actinic layer sent can be seen through transparent self-healing body by gap department and outwards jets out, make the maintainer change and observe the crack position, thereby in time take maintenance measure.

(2) The transparent self-healing body adopts polyurethane/acrylic acid composite colloid, and silane coupling agent is added in the polyurethane/acrylic acid composite colloid, so that the durability and the damp-heat aging resistance of the transparent self-healing body are improved.

(3) The transparent self-healing body adopts sticky particles, one side of the sticky particles, which is close to the insulating umbrella, is paved with photocatalytic powder, when the inner wall of the transformer bushing is cracked and expanded to the light transmission layer, light beams emitted by the photochemical layer are emitted outwards from the gap through the transparent self-healing body, the photocatalytic powder starts to catalyze the decomposition and dissolution of the adhesive particles and fills the gap after being irradiated by light, the self-sealing effect is achieved, the adhesive particles are more convenient and durable to store, the transparent layer is made of one-way light transmission glass, the light transmission direction of the one-way light transmission glass is from inside to outside, the box-type transformer is positioned inside a box like a house, the light of the environment is extremely poor, the surface of the transformer is basically not illuminated by light, when overhauing, in the maintainer opened the chamber door in-period, the transformer surface just can receive illumination, but the illumination time is shorter, combines one-way printing opacity glass's setting, and the influence of its illumination gluing granule on to the transformer bushing can be ignored.

(4) Healing layer sets up to the individual layer latticedly, and the net all adopts silicon dioxide combined material to make, inlays in the net and is equipped with the light shield layer, and the light shield layer both sides are the silicon dioxide composite bed, and the light beam that the actinic layer sent is outwards jetted out through transparent self-healing body by gap department, and the silicon dioxide composite bed can form the reflection effect to some light beams for the maintainer changes and observes the crack position.

(5) All adopt fusion welding connected mode between insulating umbrella and insulating body and the net, connect inseparabler, stable good, mechanical strength is high, and insulating umbrella and insulating body surface all are provided with the roughening layer, the fusion welding of the net of being convenient for.

(6) The illuminator is provided with a plurality ofly, and a plurality of illuminators are located the contained angle department of a plurality of insulating umbrellas respectively, adopt parallelly connected mode between a plurality of illuminators, the setting of a plurality of illuminators can prevent that the self-splitting of optical fiber layer from leading to light can not conduct smoothly, even the self-splitting of whole optical fiber layer, the diversified multidirectional conduction that can strengthen the light that sets up of a plurality of illuminators, thereby can guarantee to see through the light intensity preferred in gap when transformer bushing inner wall ftractures, parallelly connected between a plurality of illuminators can prevent that single illuminator trouble from leading to the emergence of phenomenon of putting out entirely.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the bushing of the present invention;

FIG. 3 is a schematic structural view of the bushing of the present invention;

FIG. 4 is a schematic view of the structure at A in FIG. 3;

FIG. 5 is a schematic structural diagram of the inner wall of the sleeve in an initial cracking state according to the present invention;

FIG. 6 is a schematic view of the structure at B in FIG. 5;

FIG. 7 is a schematic structural view of the inner wall of the casing in a final cracked state according to the present invention;

fig. 8 is a schematic view of the structure at C in fig. 7.

The reference numbers in the figures illustrate:

1 transformer body, 2 bottom plate, 3 mounting feet, 4 radiating fins, 5 hanging rings, 6 top plate, 7 sleeve pipes, 71 insulating pipe body, 72 insulating umbrella, 73 light-transmitting layer, 731 roughened layer, 732 cured layer, 733 transparent layer, 8 illuminator and 9 optical fiber layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is to be understood that the embodiments described are merely exemplary embodiments, rather than exemplary embodiments, and that all other embodiments may be devised by those skilled in the art without departing from the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Example 1:

referring to fig. 1, a light-transmitting box-type transformer includes a transformer body 1 having a top plate 6 and a bottom plate 2 mounted at upper and lower ends thereof, respectively, the upper end of the transformer body 1 is connected with a bushing 7, the top plate 6 is perforated with a through hole matching with the bushing 7, the side end of the transformer body 1 is fixedly connected with a plurality of uniformly distributed heat dissipation fins 4 to promote heat dissipation of the transformer body 1, thereby ensuring stable operation performance of the transformer body 1, and preventing frequent failures due to excessive internal temperature, the lower end of the bottom plate 2 is fixedly connected with a mounting pin 3 to prevent the bottom plate 2 at the bottom end of the transformer body 1 from directly contacting with the ground, thereby facilitating transportation, such as insertion of a forklift into a gap between the bottom plate 2 and the mounting pin 3, and the upper end of the top plate 6 is fixedly connected with a plurality of lifting rings 5 to facilitate lifting of a lifting device to lift the transformer body and complete transportation or movement; referring to fig. 2, the bushing 7 includes an insulating tube 71 and a plurality of insulating umbrellas 72, the lower end of the insulating tube 71 penetrates through the through hole and is connected to the transformer body 1, the insulating umbrellas 72 are integrally sleeved on the insulating tube 71 from top to bottom, the insulating tube 71 and the insulating umbrellas 72 are both hollow, and the insulating umbrellas 72 and the inner side wall of the insulating tube 71 are both connected to a photodefinable layer, referring to fig. 3, the photodefinable layer includes a light emitter 8 and a fiber layer 9, the light emitter 8 is connected to the surface of the fiber layer 9, the light emitter 8 is a light emitting diode, has low energy consumption and good brightness, the surfaces of the insulating umbrellas 72 and the insulating tube 71 are both wrapped with a light transmission layer 73, referring to fig. 4, the light transmission layer 73 includes a healing layer 732 and a transparent layer 733, the healing layer 732 is located between the transparent layer 733 and the insulating umbrella 72, a transparent layer 732 is provided in the healing layer 732, the inner wall and the outer surface of the transformer bushing are respectively provided with the photodefinable layer 73, and a healing layer 732 is arranged in the light-transmitting layer 73, please refer to fig. 5, 6, 7 and 8, when the inner wall of the transformer bushing cracks and expands to the light-transmitting layer 73, the transparent self-healing body in the healing layer 732 is used to fill the gap to achieve the self-sealing effect, and in addition, light beams emitted by the actinic layer are emitted outwards from the gap through the transparent self-healing body, so that a maintainer can easily observe the crack position, and thereby timely take maintenance measures.

The transparent self-healing body adopts polyurethane/acrylic acid composite colloid, and silane coupling agent is added in the polyurethane/acrylic acid composite colloid, so that the durability and the damp-heat aging resistance of the transparent self-healing body are improved.

The transparent self-healing body adopts adhesive particles, photocatalytic powder is laid on one side of the adhesive particles close to the insulating umbrella 72, the photocatalytic powder can be selected from modified nano titanium dioxide photocatalyst, when the inner wall of the transformer bushing is cracked and expanded to a light-transmitting layer 73, light beams emitted by the actinic layer can penetrate through the transparent self-healing body from the gap and outwards emit, the modified nano titanium dioxide photocatalyst starts to catalyze the decomposition and dissolution of the adhesive particles and fill the gap after being irradiated by light, the self-sealing effect is achieved, the adhesive particles are more convenient and durable to store, the transparent layer 733 adopts one-way light-transmitting glass, the light-transmitting direction of the one-way light-transmitting glass is from inside to outside, the box-type transformer is positioned in a box like a house, the environmental light is extremely poor, the surface of the transformer can not be basically irradiated by light, and when an overhaul worker opens a box door, the surface of the transformer can be irradiated by light, but the illumination time is shorter, combines one-way printing opacity glass's setting, and its illumination can be ignored to the influence of gluing granule on the transformer bushing.

Referring to fig. 4, 6 and 8, the healing layer 732 is a single-layer grid, the grid is made of glass, a light shielding layer is embedded in the grid, both sides of the light shielding layer are made of glass, light beams emitted by the light shielding layer are emitted from the gaps through the transparent self-healing body, and the glass can reflect part of the light beams, so that the maintainers can observe the positions of the gaps more easily.

All adopt the fusion welding connected mode between insulating umbrella 72 and insulating body 71 and the net, connect inseparabler, stable good, mechanical strength is high, and insulating umbrella 72 and insulating body 71 surface all are provided with dull polish layer 731, the fusion welding of the net of being convenient for.

Referring to fig. 3, 5 and 7, the plurality of light emitters 8 are disposed, and the plurality of light emitters 8 are respectively disposed at the corners of the plurality of insulating umbrellas 72, and the plurality of light emitters 8 are connected in parallel, so that the plurality of light emitters 8 can prevent the optical fiber layer 9 from self-cracking to cause light non-smooth conduction, and even if the optical fiber layer 9 is self-cracked, the plurality of light emitters 8 are disposed in multiple directions to enhance the multidirectional conduction of light, thereby ensuring better light intensity through the gap when the inner wall of the transformer bushing is cracked, and the plurality of light emitters 8 are connected in parallel to prevent the occurrence of complete extinction due to the failure of a single light emitter 8.

The inner and outer surfaces of the transparent layer 733 are polished, so that friction force with the outside is small, abrasion is not easy, and dust is not easy to accumulate.

This scheme sets up the actinic layer and euphotic layer 73 respectively at transformer bushing inner wall and surface, and set up healing layer 732 in euphotic layer 73, when transformer bushing inner wall fracture and expansion euphotic layer 73 department, utilize the transparent self-healing body in healing layer 732 to fill up this gap, reach self-sealing effect, in addition, the light beam that the actinic layer sent can see through the transparent self-healing body by gap department and outwards jets out, when the latticed glass healing layer 732 of monolayer, glass can form the reflection effect to some light beams, make the maintainer more easily observe the crack position, thereby in time take maintenance measure.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by the equivalent or modified embodiments and the modified concepts of the present invention.

Claims

1. The utility model provides a box transformer of printing opacity type, includes transformer body (1) that roof (6) and bottom plate (2) were installed respectively at upper and lower both ends, transformer body (1) upper end is connected with sleeve pipe (7), cut on roof (6) have with sleeve pipe (7) assorted through-hole, its characterized in that: the transformer comprises a transformer body (1), a plurality of uniformly distributed radiating fins (4) are fixedly connected to the side end of the transformer body (1), a mounting foot (3) is fixedly connected to the lower end of a bottom plate (2), a plurality of hanging rings (5) are fixedly connected to the upper end of a top plate (6), a sleeve (7) comprises an insulating tube body (71) and a plurality of insulating umbrellas (72), the lower end of the insulating tube body (71) penetrates through a through hole and is connected with the transformer body (1), the insulating umbrellas (72) are integrally sleeved on the insulating tube body (71) from top to bottom, the insulating tube body (71) and the insulating umbrellas (72) are both hollow, the inner side walls of the insulating umbrellas (72) and the insulating tube body (71) are both connected with a polishing layer, the polishing layer comprises a light emitter (8) and a light guide fiber layer (9), the light emitter (8) is connected to the surface of the light guide fiber layer (9), and light transmission layers (73) are wrapped on the surfaces of the insulating umbrellas (72) and the insulating tube body (71), the euphotic layer (73) comprises a healing layer (732) and a transparent layer (733), the healing layer (732) is positioned between the transparent layer (733) and the insulating umbrella (72), and a transparent self-healing body is arranged in the healing layer (732); the transparent layer (733) is made of unidirectional light-transmitting glass, and the light-transmitting direction of the unidirectional light-transmitting glass is from inside to outside; the inner surface and the outer surface of the transparent layer (733) are polished.

2. A light-transmitting box-type transformer as claimed in claim 1, wherein: the transparent self-healing body is made of polyurethane/acrylic acid composite colloid, and a silane coupling agent is added into the polyurethane/acrylic acid composite colloid.

3. A light-transmitting box-type transformer as claimed in claim 1, wherein: the transparent self-healing body adopts adhesive particles, and photocatalytic powder is paved on one side of the adhesive particles close to the insulating umbrella (72).

4. The light-transmission type box transformer of claim 1, wherein: the healing layer (732) is arranged in a single-layer grid shape, and the grids are made of silicon dioxide composite materials.

5. The light-transmissive box transformer as claimed in claim 4, wherein: a light shielding layer is embedded in the grid, and both sides of the light shielding layer are silicon dioxide composite layers.

6. A light-transmitting box transformer according to claim 1 or 4, characterized in that: and fusion welding connection modes are adopted between the insulating umbrella (72) and the insulating pipe body (71) and the grids, and roughened layers (731) are arranged on the surfaces of the insulating umbrella (72) and the insulating pipe body (71).

7. The light-transmission type box transformer of claim 1, wherein: the plurality of light emitters (8) are arranged, and the plurality of light emitters (8) are respectively positioned at included angles of the insulating umbrellas (72).

8. The light-transmission type box transformer of claim 7, wherein: the light emitters (8) are connected in parallel.