CN211824919U

CN211824919U - Instrument for detecting and analyzing faults of transformer respirator

Info

Publication number: CN211824919U
Application number: CN202020677497.1U
Authority: CN
Inventors: 杜晓舟; 王之赫; 刘佩; 李威; 周雪莹; 施琳
Original assignee: Maintenance Branch of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Maintenance Branch of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-10-30
Anticipated expiration: 2030-04-28

Abstract

The utility model discloses an instrument for detecting and analyzing transformer respirator trouble, including two parts of sealed cowling and host computer. The sealing cover is used for completely wrapping the transformer respirator and forming a closed environment, and an inflation inlet, an air pressure meter and an observation window are arranged on the sealing cover. The main machine part is used for controlling the air pump to inflate the inflatable cover, providing functions of air pressure closed-loop control, overvoltage protection and the like, and simultaneously adopting a storage battery for power supply. A instrument for detecting and analyzing transformer respirator trouble have characteristics that the performance is good, the portability is strong, convenient operation.

Description

Instrument for detecting and analyzing faults of transformer respirator

Technical Field

The utility model relates to an electric power system instrumentation's application especially relates to an instrument for detecting and analyzing transformer respirator trouble.

Background

The breather is one of the important components of the transformer and is used for absorbing impurities and moisture in the air entering the oil conservator so as to prevent the transformer from being wetted. The possible faults of the respirator mainly include blockage and air leakage, and according to the relevant maintenance specifications of the power equipment, the blockage of the respirator belongs to critical defects, heavy gas protection needs to be quit, and emergency repair is organized. However, in actual work, no effective means is available for judging whether the respirator has a fault or not, and the respirator can only be treated according to the most serious condition, and the respirator is immediately disassembled and then reinstalled. The processing mode not only causes huge waste of materials, but also increases maintenance time and even influences production activities.

Therefore, it is very important to design and manufacture an instrument for detecting and analyzing the failure of the transformer respirator.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an instrument for detecting and analyzing transformer respirator trouble, this tester can judge whether normal work and what kind of trouble has taken place at the condition of not pulling down transformer respirator under, provides accurate foundation for the maintenance of transformer respirator equipment, has practiced thrift the maintenance cost, has improved maintenance efficiency.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an instrument for detecting and analyzing the fault of a transformer respirator comprises a sealing cover and a host machine; the sealing cover is used for completely wrapping the transformer respirator and forming a closed environment. An inflation opening and an observation window are arranged on the sealing cover, and a barometer is arranged in the sealing cover. The main machine is connected to the inflation inlet of the sealing cover through an inflation tube. The host is used for controlling the air pump to inflate the inflatable cover. The inflation inlet is used for increasing the air pressure value for inflating the sealing cover; the barometer can detect the air pressure value in the cover in real time and can feed back the air pressure value to the host computer while displaying; the observation window is used for observing the condition of the oil cup of the respirator.

Furthermore, the inflation tube between host computer and the sealed cowling is detachable plastic hose, also makes things convenient for when conveniently dismantling to adjust length as required.

Furthermore, the sealing cover adopts a detachable structure and comprises a box body and a top cover. The top cover is arranged at the top of the box body. The observation window is arranged on the side face of the box body and used for observing the state of the internal respirator. The barometer sets up at the top cap inboard.

Furthermore, a sealing gasket is arranged between the box body and the top cover, and the box body and the top cover are spliced together during installation and then fixed and guaranteed by using a clamp. The design can ensure the air tightness of the sealing cover and is convenient to disassemble and assemble, and the convenience of using the instrument is ensured.

Further, the main machine comprises an air pump, and the air pump is connected to the inflation port of the sealing cover through an inflation hose and inflates air in the sealing cover.

Furthermore, the inflator pump is an adjustable inflator pump and is provided with a plurality of gears. When the start button is pressed down, the air pump starts to inflate, and the gear of the air pump can be manually selected according to the sizes of different respirators, so that the phenomenon that the air pump is inflated too fast is prevented.

Furthermore, the host machine also comprises a storage battery, and the storage battery is used for providing electric energy for the whole device and providing a charging function, so that the host machine can be conveniently used without a power supply on site.

Furthermore, the barometer is connected to the host computer through an air pressure feedback loop, and the barometer can detect the air pressure value in the cover in real time and can also feed back the air pressure value to the host computer while displaying. And feeding back the air pressure value in the sealing cover to a host, and controlling the inflation flow by the host according to the air pressure value in the sealing cover, thereby providing functions of air pressure closed-loop control, overvoltage protection and the like.

Furthermore, the host machine further comprises an air pressure controller, and the air pressure controller is used for controlling the inflation flow of the air pump according to the air pressure value in the sealing cover. When the air pressure in the sealing cover is larger than the preset safe air pressure, the power supply of the inflator pump can be automatically cut off, and the equipment is prevented from being damaged by overvoltage.

Furthermore, the instrument for detecting and analyzing the fault of the transformer respirator adopts a portable design, and can be conveniently used in a working site: the portable multifunctional instrument box is characterized by further comprising an instrument box with wheels, wherein the sealing cover and the host are placed in the instrument box in a non-working state, and the instrument is convenient to move and transport.

The transformer breather consists of a connecting pipe, a silica gel bin, an inner oil cup and an outer oil cup; the connecting pipe is used for connecting the respirator and the transformer body, the silica gel bin is used for storing hygroscopic silica gel, the inner oil cup and the outer oil cup jointly form an oil sealing system, and the breathing state of the transformer is indicated at the same time. When the liquid level of the inner oil cup is higher than that of the outer oil cup, or bubbles are generated in the inner oil cup, which indicates that the external air pressure of the transformer is higher than the internal air pressure, and the transformer is in a gas suction state; when the liquid level of the outer oil cup is higher than that of the inner oil cup, or the outer oil cup generates expectations, it is indicated that the internal air pressure of the transformer is higher than the external air pressure, and the transformer is in an expiration state.

The principle of the instrument for detecting and analyzing the fault of the transformer respirator is that a container with an observation window and a fixed volume is used for wrapping and sealing the whole respirator, then an air pump is used for slowly inflating the container, and the inflation is stopped when the air pressure reaches a fixed value, so that the capsule is prevented from being damaged. In the process of inflating the instrument, whether the respirator is damaged or not and how the respirator is damaged are judged by observing the working state of the respirator, so that the judgment of fault reasons and fault points is facilitated. According to the working principle of the respirator, under normal conditions, after the pump is started, a liquid level difference is generated between the inner oil cup and the outer oil cup of the respirator, and the air pressure is almost unchanged. If the respirator fails, the following sites can occur: 1) if the liquid level difference between the inner oil cup and the outer oil cup of the respirator is not generated after the pump is started and the air pressure is not changed, the respirator is indicated to have serious air leakage; 2) if the liquid level difference is generated between the inner oil cup and the outer oil cup of the respirator after the pump is started, but the liquid level difference gradually disappears after the pump is stopped, the respirator is indicated to have slight air leakage; 3) if the liquid level difference between the inner oil cup and the outer oil cup of the respirator cannot be generated after the pump is started, but the air pressure rises, the respirator is blocked. Through the judgment of the three typical phenomena, the fault of which form the respirator has can be analyzed, and corresponding treatment measures are taken to quickly and specifically eliminate the defects.

The utility model discloses an instrument for detecting and analyzing transformer respirator trouble through the normal breathing state of outside pressurization simulation transformer, observes again and analyzes the current operating condition of respirator to judge whether the function of respirator is normal. The utility model discloses an instrument for detecting and analyzing transformer respirator trouble has convenient operation, strong, the convenient to use's of portability characteristics.

Drawings

FIG. 1 is a block diagram of the apparatus for detecting and analyzing the failure of a transformer respirator according to the present invention;

FIG. 2 is a schematic view of the respirator shown in FIG. 1;

FIG. 3 is an exploded view of the closure shown in FIG. 1;

fig. 4 is a schematic structural diagram of the host shown in fig. 1.

Detailed Description

The following describes in detail an apparatus for detecting and analyzing transformer respirator faults according to the present invention with reference to the accompanying drawings. In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", "bottom part", etc. 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 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, "first", "second", etc. do not represent the degree of importance of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.

As shown in FIG. 1, the utility model discloses an instrument for detecting and analyzing transformer respirator trouble, including two parts of sealed cowling and host computer. As shown in fig. 3, the sealing cover comprises a box body 8 and a top cover 11, wherein an observation window 7 and an inflation inlet 10 are arranged on the box body 8, and an air pressure gauge 9 is arranged in the box body 8. The observation window 7 and the inflation inlet 10 can be arranged at any position of the box body, and the observation window 7 can be made of transparent or partially transparent materials.

As shown in fig. 4, in the present embodiment, the main machine preferably includes an adjustable air pump 12, a storage battery 13 and an air pressure controller 14. The box body 8 of the sealing cover is formed by bending and welding a stainless steel sheet to form a main body of the sealing cover, and is used for sleeving the respirator into the box body from bottom to top; the top cover of the sealing cover is divided into two pieces, the structural design convenient to detach is adopted, and the clamp is used for fixing the sealing cover above the sealing cover during use and enabling the respirator pipeline to penetrate through the sealing cover. The barometer 9 is arranged on the inner side of the top cover, is powered by a battery, and is used for indicating the air pressure in the sealing cover and remotely transmitting the air pressure to the host for logic judgment; the observation window 7 is a transparent structure formed by an acrylic sheet, is arranged below the sealing cover and faces the respirator oil cup, and is used for observing the liquid level condition in the oil cup during detection; the adjustable air pump 12 is used for filling air into the sealing cover, improving the air pressure in the sealing cover and providing a gear selection function; the storage battery 13 is used for supplying power to the whole host system, so that the portability of the instrument is improved; the air pressure controller 14 monitors the air pressure in the sealed cover, and when the air pressure value is larger than a set safe fixed value, the power supply of the air pump is cut off through the overvoltage protection device 15, and the air inflation is stopped.

In this embodiment, fig. 1 is a wiring diagram for mounting the device, when the device is used, the sealing cover is sleeved outside the respirator and is reliably fixed, the host machine, the air pump and the inflation port of the sealing cover are connected by a hose, and then the air pump switch is turned on, so that the test can be started.

As shown in fig. 2, the transformer breather is composed of an oil conservator connecting pipe 1, a silica gel bin 2, an inner oil cup 4 and an outer oil cup 5; the conservator connecting pipe 1 is used for connecting the breather and the transformer body, the silica gel bin 2 is used for storing moisture-absorbing silica gel 3, the inner oil cup 4 and the outer oil cup 5 are communicated with the transformer oil tank 6, an oil sealing system is formed jointly, and the breathing state of the transformer is indicated at the same time. When the liquid level of the inner oil cup is higher than that of the outer oil cup, or bubbles are generated in the inner oil cup, which indicates that the external air pressure of the transformer is higher than the internal air pressure, and the transformer is in a gas suction state; when the liquid level of the outer oil cup is higher than that of the inner oil cup, or the outer oil cup generates expectations, it is indicated that the internal air pressure of the transformer is higher than the external air pressure, and the transformer is in an expiration state.

According to the working principle of the respirator, under normal conditions, after the pump is started, a liquid level difference is generated between the inner oil cup and the outer oil cup of the respirator, and the air pressure is almost unchanged. If the respirator fails, the following sites can occur: 1) if the liquid level difference between the inner oil cup and the outer oil cup of the respirator is not generated after the pump is started and the air pressure is not changed, the respirator is indicated to have serious air leakage; 2) if the liquid level difference is generated between the inner oil cup and the outer oil cup of the respirator after the pump is started, but the liquid level difference gradually disappears after the pump is stopped, the respirator is indicated to have slight air leakage; 3) if the liquid level difference between the inner oil cup and the outer oil cup of the respirator cannot be generated after the pump is started, but the air pressure rises, the respirator is blocked. Through the judgment of the three typical phenomena, the fault of which form the respirator has can be analyzed, and corresponding treatment measures are taken to quickly and specifically eliminate the defects.

Based on the description of the preferred embodiments of the present invention, it should be clear that the invention as defined by the appended claims is not limited solely to the specific details set forth in the above description, but that many obvious modifications thereof, which do not depart from the spirit or scope of the invention, are equally possible to achieve the objects of the invention.

Claims

1. An instrument for detecting and analyzing the fault of a transformer respirator is characterized by comprising a sealing cover and a host machine; the sealing cover is used for completely wrapping the transformer respirator and forming a closed environment; an inflation inlet and an observation window are arranged on the sealing cover, and a barometer is arranged in the sealing cover; the main machine is connected to the inflation inlet of the sealing cover through an inflation tube.

2. The apparatus for detecting and analyzing transformer respirator faults as claimed in claim 1, wherein the air inflation tube between the main machine and the sealing cover is a detachable plastic hose.

3. The apparatus for detecting and analyzing transformer respirator faults according to claim 1, wherein the sealing cover comprises a box body and a top cover, and the top cover is installed on the top of the box body; the observation window sets up the box side, the barometer sets up at the top cap inboard.

4. The apparatus according to claim 3, wherein a gasket is installed between the box and the top cover, and the box and the top cover are assembled together and then fixed and secured by using the clamp.

5. The apparatus of claim 1, wherein the host computer comprises an air pump connected to an inflation port of the sealing cover via an inflation tube.

6. The apparatus for detecting and analyzing transformer respirator faults according to claim 5, wherein the inflator is an adjustable inflator and has a plurality of gears.

7. The apparatus according to claim 5, wherein the host further comprises a battery.

8. The apparatus of claim 1, wherein the barometer is connected to the host via a barometric feedback loop.

9. The apparatus of claim 8, wherein the host further comprises an air pressure controller, the air pressure gauge is connected to the air pressure controller via an air pressure feedback loop; the air pressure controller is used for controlling the inflation flow of the air pump according to the air pressure value in the sealing cover.

10. The apparatus for detecting transformer respirator failure according to claim 1, wherein the apparatus further comprises a wheeled instrument box, wherein the sealed enclosure and the host computer are disposed in the instrument box in the non-operational state.