CN218886927U

CN218886927U - Insulating oil leakage plugging device

Info

Publication number: CN218886927U
Application number: CN202223050528.9U
Authority: CN
Inventors: 马世龙; 张亚菲; 吴宝良; 周渠; 黄川�; 邓稳; 陈虹; 邹李; 邹镇檐
Original assignee: State Grid Corp of China SGCC; Southwest University; Jiangjin Power Supply Co of State Grid Chongqing Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Southwest University; Jiangjin Power Supply Co of State Grid Chongqing Electric Power Co Ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-04-18
Anticipated expiration: 2032-11-16

Abstract

The utility model relates to an insulating oil leakage plugging device belongs to power transformer technical field. Insulating oil leakage plugging device includes: the sealing adhesive layer is covered on the oil leakage area; the shell is covered on the periphery of the sealing adhesive layer and forms a sealing cavity together with the sealing adhesive layer and the transformer in an enclosing manner; a pressurizing port communicated with the sealing cavity is formed on the shell; the heating element is arranged in the sealing cavity and is matched and connected with the inner wall of the shell; the heating element is controlled to heat the sealing glue layer, and the compact sealing glue layer is rapidly solidified. The insulating oil leakage plugging device enables the pressure in the sealing cavity to be larger than the pressure in the transformer by pressurizing the sealing cavity, inhibits the micro leakage phenomenon of leakage points, prevents the pollution of micro transformer oil on the bonding interface of the sealing glue layer, improves the plugging effect and the effective time of the sealing glue layer, and simultaneously increases the bonding strength of the sealing glue layer by larger pressure; the curing speed of the sealant layer is accelerated through the heating element, so that the plugging time is shortened, and the plugging efficiency is improved.

Description

Insulating oil leakage plugging device

Technical Field

The utility model belongs to the technical field of power transformer, a insulating oil leakage plugging device is related to.

Background

The power transformer is one of the most important electrical devices in the transmission and distribution process of electric energy, and whether the power transformer can safely and reliably operate will directly affect the power supply level of an electric power system. Power transformers can be classified into oil-immersed, dry, and gas-filled transformers according to the winding insulation and cooling method.

Among them, the oil-immersed power transformer has a large number in the power system, and in various oil-immersed transformer operation failures, the leakage of the insulating oil is one of the most common failures, and the existing sealing method for the leakage of the transformer is not only slow in sealing speed, but also poor in sealing effect.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a sealing method to transformer seepage not only seals speed slowly, and the sealed poor problem of effect, provides a sealing speed is fast, and sealed effectual insulating oil leakage plugging device.

In order to achieve the above purpose, the utility model provides a following technical scheme:

insulating oil leakage plugging device connects on the transformer, the transformer has the oil leakage district, insulating oil leakage plugging device includes:

the sealing adhesive layer is covered on the oil leakage area;

the shell is covered on the periphery of the sealing adhesive layer and forms a sealing cavity together with the sealing adhesive layer and the transformer in an enclosing manner; a pressurizing opening communicated with the sealing cavity is formed in the shell; and

the heating element is arranged in the sealing cavity and is matched and connected with the inner wall of the shell;

wherein the heating element is controlled to heat the sealant layer so that the sealant layer is rapidly cured.

In one embodiment, the insulating oil leakage plugging device further comprises an oil-driving glue, the oil-driving glue is coated around the oil leakage area, and the sealing glue layer is bonded to one side, away from the oil leakage area, of the oil-driving glue.

In one embodiment, the orthographic projection of the oil repellent glue towards the sealant layer falls within the outline of the sealant layer.

In one embodiment, the number of the heating parts is at least two, and all the heating parts surround the sealant layer and are arranged at intervals.

In one embodiment, the insulating oil leakage blocking device further comprises a pressurizing piece, wherein the pressurizing piece is communicated with the pressurizing port and is controlled to pressurize the sealing cavity.

The beneficial effects of the utility model reside in that: when the seepage took place in the oil leak district of transformer, the utility model is used for the oil leak district of shutoff transformer. Specifically, the leaking oil zone is sealed by a sealant layer. Then, the shell is fixed around the sealing adhesive layer, and the pressure is applied to a sealing cavity formed by the sealing adhesive layer, the transformer and the shell through the pressure applying port, so that the pressure in the sealing cavity is greater than the pressure in the transformer, the trace leakage phenomenon of leakage points is inhibited, the pollution of trace transformer oil to the bonding interface of the sealing adhesive layer is prevented, the plugging effect and the effective time of the sealing adhesive layer are improved, and meanwhile, the bonding strength of the sealing adhesive layer is increased by the larger pressure. Finally, the temperature in the sealing cavity is increased by heating and drying the heating element, so that the environmental temperature in the process of leaking stoppage of the sealing adhesive layer is increased, the curing speed of the sealing adhesive layer is accelerated, the leaking stoppage time is shortened, and the leaking stoppage efficiency is improved. So, this insulating oil leaks plugging device has improved sealed speed, has improved sealed effect.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of an insulating oil leakage blocking device according to an embodiment of the present application.

Description of reference numerals: 100. an insulating oil leakage blocking device; 10. sealing the adhesive layer; 20. a housing; 21. a pressurizing port; 30. a heating member; 40. oil-displacing glue; 200. a transformer; 210. and an oil leakage area.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

At present, a welding method and a blocking method are generally adopted for sealing oil leakage of a transformer. The welding method generally adopts tin bar welding to directly repair leakage, but high temperature generated in the leakage repairing process can cause the decomposition of insulating oil and generate various pollution gases. Therefore, the sealing method must adopt power-off welding, but the sealing method also has the problems of large sealing workload and influence on the normal operation of equipment. The sticking and blocking method can realize the charged oil sealing, but because the oil pressure exists in the transformer during normal operation, the oil leakage point can still leak oil discontinuously in the sealing process. The oil stain of seepage will influence the cleanliness of sealed interface, reduces and glues stifled bonding effect, finally leads to sealed deadline to be broken, even sealed the inefficacy.

Based on this, the present application provides an insulating oil leakage plugging device, which can preferably improve the above-mentioned problem.

The insulating oil leakage blocking device of the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an insulating oil leakage blocking device according to an embodiment of the present application. For the purpose of illustration, only the structures described in connection with the present application are illustrated in the figures.

Referring to fig. 1, an insulating oil leakage blocking device 100 disclosed in at least one embodiment of the present application is used to block an oil leakage area 210 on a transformer 200, so as to prevent insulating oil in the transformer 200 from leaking from the oil leakage area 210, where the oil leakage area 210 refers to a defect such as a hole or a crack where oil leakage occurs on the transformer 200. The insulating oil leakage plugging device 100 comprises a sealant layer 10, a shell 20 and a heating element 30, wherein the sealant layer 10 is used for sealing a sealant oil leakage area 210, the shell 20 is covered on the sealant layer 10, and the heating element 30 is used for heating and drying the sealant layer 10.

The sealant layer 10 covers the oil leakage region 210. Specifically, the sealant layer 10 is coated on the oil leakage region 210, and the coated area of the sealant layer 10 should be much larger than the area of the oil leakage region 210. Thus, the effectiveness and the continuity of the sealing can be ensured. Preferably, the sealant layer 10 should be a rubber-type sealant layer 10 that is excellent in sealing effect and durability.

The casing 20 covers the periphery of the oil leakage area 210, and forms a sealed cavity together with the sealant layer 10 and the transformer 200. Specifically, the casing 20 may be a hollow bottomless casing 20, and after the casing 20 is covered on the transformer 200, the side edges of the casing 20 surround the whole circumference of the sealant layer 10 and are fixed on the transformer 200 around the sealant layer 10 by a strong adhesive, so as to ensure that the casing 20 is fixed and adhered firmly. The housing 20 may be an iron housing 20, or may be a housing 20 made of other materials, and the application is not limited in particular, as long as the housing 20 has sufficient compressive strength.

The housing 20 is formed with a pressurizing port 21 communicating with the seal chamber. In some embodiments, the insulating oil leakage blocking device 100 further comprises a pressurizing member, which is communicated with the pressurizing port 21 and is controlled to pressurize the sealing cavity. In practical use, after the pressurizing member pressurizes the sealed cavity through the pressurizing port 21, for example, air is filled into the sealed cavity to form a sealed high-pressure cavity. Because the pressure in the sealing cavity is greater than the pressure in the transformer 200, the phenomenon of micro leakage of leakage points is inhibited, the pollution of oil of the micro transformer 200 to a bonding interface is prevented, and the effective time of the plugging effect is prolonged. It will be readily appreciated that a greater pressure will also increase the adhesive strength of the sealant layer 10, thereby extending the length of time that the sealant layer 10 seals the oil leak region 210.

In particular, in some embodiments, the pressurizing member may be a pump with a barometer. It is to be understood that the above description is intended to be illustrative only and is not intended to be limiting.

The heating element 30 is disposed within the sealed cavity and is coupled to the inner wall of the housing 20. The heating element 30 is controlled to heat the sealant layer 10 and the dense sealant layer 10 is rapidly cured. Specifically, after the heating member 30 is turned on, the temperature in the sealing chamber rises, and the curing speed of the sealant layer 10 is increased. Therefore, the leakage stoppage time can be shortened, and the leakage stoppage efficiency is improved.

In some embodiments, the number of heating members 30 is at least two, and all of the heating members 30 are spaced around the layer of sealant 10. In particular, in some embodiments, the number of heating members 30 may be four, with four heating members 30 being disposed around the layer of sealant 10, and two of the heating members being spaced apart in the transverse direction of the layer of sealant 10 and two of the heating members being spaced apart in the longitudinal direction of the layer of sealant 10. Therefore, the sealing adhesive layer 10 can be uniformly heated, so that the curing of the sealing adhesive layer 10 is uniform, and the sealing effect of the sealing adhesive layer 10 on the oil leakage area 210 is ensured.

In some embodiments, the sealing device 100 further includes an oil displacement gel 40, the oil displacement gel 40 is coated around the oil leakage area 210, and the sealant layer 10 is adhered to a side of the oil displacement gel 40 away from the oil leakage area 210. In practical use, after the position of the oil leakage area 210 is determined on the surface of the transformer 200, the oil displacement glue 40 is firstly coated around the oil leakage area 210, and the interference of continuously leaked oil stain of the micro-transformer 200 on a sealing interface is avoided by utilizing the oleophobic property of the surfactant in the oil displacement glue 40, and meanwhile, the acting duration of the sealing glue layer 10 can be effectively prolonged. After the oil repellent glue 40 is coated, the sealant layer 10 is coated.

In particular to some embodiments, the oil-displacing gel 40 can be one or a mixture of two or more of a microbial oil-displacing gel 40, a surfactant oil-displacing gel 40, and a polymer oil-displacing gel 40. It is to be understood that the above description is intended to be illustrative only and is not intended to be limiting.

Further, in some embodiments, to ensure the sealing effectiveness and the durability, the orthographic projection of the oil repellent glue 40 toward the sealant layer 10 falls within the outline of the sealant layer 10, i.e., the coating area of the sealant layer 10 is greater than the coating area of the oil repellent glue 40.

The insulating oil leakage blocking device 100 is used for blocking the oil leakage area 210 of the transformer 200 when the oil leakage area 210 of the transformer 200 leaks. Specifically, the sealant layer 10 seals the sealant region 210. Then, the casing 20 is fixed around the sealant layer 10, and a pressure port 21 is used to pressurize a sealed cavity formed by the sealant layer 10, the transformer 200 and the casing 20 together, so that the pressure in the sealed cavity is greater than the pressure in the transformer 200, thereby inhibiting the micro leakage phenomenon of leakage points, preventing the pollution of oil of the micro transformer 200 to the bonding interface of the sealant layer 10, improving the plugging effect and the effective time of the sealant layer 10, and simultaneously, the bonding strength of the sealant layer 10 is increased by the larger pressure. Finally, the temperature in the sealing cavity is increased by heating and drying the heating element 30, so that the environmental temperature in the process of leaking stoppage of the sealing adhesive layer 10 is increased, the curing speed of the sealing adhesive layer 10 is accelerated, the leaking stoppage time is shortened, and the leaking stoppage efficiency is improved. Thus, the insulating oil leakage blocking device 100 improves the sealing speed and improves the sealing effect.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or substituted by equivalents without departing from the spirit and scope of the technical solutions, which should be covered by the scope of the claims of the present invention.

Claims

1. Insulating oil leakage plugging device connects on the transformer, the transformer has oil leakage district, its characterized in that: the insulating oil leakage plugging device comprises:

the sealing adhesive layer is covered on the oil leakage area;

wherein the heating element is controlled to heat the sealant layer such that the sealant layer is rapidly cured.

2. The insulating oil leakage blocking device according to claim 1, characterized in that: the insulating oil leakage plugging device further comprises oil driving glue, the oil driving glue is coated on the periphery of the oil leakage area, and the sealing glue layer is bonded on one side, away from the oil leakage area, of the oil driving glue.

3. The insulating oil leakage blocking device according to claim 2, characterized in that: the orthographic projection of the oil-repellent glue towards the sealing glue layer falls into the outline of the sealing glue layer.

4. The insulating oil leakage blocking device according to claim 1, characterized in that: the quantity of heating member is two at least, and is whole the heating member encircles sealant layer and interval set up.

5. The insulating oil leakage blocking device according to claim 1, wherein: the insulating oil leakage plugging device further comprises a pressurizing piece, wherein the pressurizing piece is communicated with the pressurizing port and is controlled to pressurize the sealing cavity.