CN112083258A - Intelligent fault detection device for power transformer - Google Patents

Abstract

An intelligent fault detection device for a power transformer comprises a first shell, a connecting pipe, a second shell, a circuit board, a sound collector and a current detector; a temperature sensor and a pressure sensor are arranged in the first shell, the first shell is connected with the second shell, and the interior of the first shell is communicated with the transformer oil bin through a connecting pipe; the upper end face of the second shell is provided with a key module and a display screen, the side end face of the second shell is provided with a first communication socket used for being matched with a sound collector, a second communication socket used for being matched with a current detector and a power socket, and a central processing unit, a comparison module, a database, a data acquisition module, a converter and a data processing module which are sequentially in communication connection are arranged on a circuit board in the second shell; the central processing unit is electrically connected with the power socket, and is in communication connection with the comparison module, the database and the data processing module. The invention can efficiently and quickly analyze the fault of the transformer and greatly improve the detection efficiency of the fault of the transformer.

Description

An intelligent detection device for power transformer faults

technical field

The invention relates to the technical field of transformer detection, in particular to an intelligent detection device for power transformer faults.

Background technique

A power transformer is a static electrical equipment that is used to convert a certain value of AC voltage (current) into another voltage (current) with the same frequency or different values; a power transformer is a power plant and One of the main equipment of the substation. The function of the transformer is multi-faceted. It can not only increase the voltage and send the electric energy to the electricity-consuming area, but also reduce the voltage to the voltage used at all levels to meet the needs of electricity consumption; in the transformer maintenance work, the maintenance personnel often need to repair the power transformer. When the transformer fails, in addition to the current and voltage changes on all sides of the transformer and the changes in the internal sound of the transformer, the oil, gas, temperature and other electricity in the transformer tank will also change; maintenance personnel need to Checking the faults one by one is cumbersome and time-consuming and labor-intensive. The efficiency of fault maintenance of the transformer is low, which greatly increases the recovery time of the power system and brings inconvenience to the production and life of enterprises and people. Therefore, this application proposes a Power transformer fault intelligent detection device.

SUMMARY OF THE INVENTION

(1) Purpose of the invention

In order to solve the technical problems existing in the background art, the present invention proposes an intelligent detection device for power transformer faults. The present invention can analyze the faults of the transformers efficiently and quickly, and greatly improves the detection efficiency of the faults of the transformers.

(2) Technical solutions

In order to solve the above problems, the present invention provides a power transformer fault intelligent detection device, which includes a first casing, a connecting pipe for connecting with the transformer oil empty tank, a second casing, a circuit board, a sound collector and current detector;

A temperature sensor and a pressure sensor are arranged in the first shell, the first shell is connected with the second shell, and the first shell is provided with an air inlet part for connecting with the connecting pipe and for passing through the air inlet end of the vacuum pumping equipment. The air extraction part connected by the trachea; the air extraction part is provided with a control valve;

The upper end face of the second casing is provided with a key module and a display screen, and the side end face of the second casing is provided with a first communication socket for matching with the sound collector, a second communication socket for matching with the current detector, and a power supply a socket, a plurality of pillars are arranged side by side in the second shell;

The circuit board is located in the second casing, the circuit board is connected to one end of the plurality of pillars away from the inner wall of the second casing, and the circuit board is provided with a data acquisition module, a converter, and a data processing module for matching the first communication socket and the second communication socket , central processing unit, comparison module and database for storing past transformer abnormal records;

The data acquisition module is respectively connected to the temperature sensor, the pressure sensor and the converter; the converter is connected to the data processing module; the data processing module is connected to the central processing unit; the central processing unit is electrically connected to the power socket, and the central processing unit is connected to the key module, Display screen, comparison module and database for storing abnormal records of previous transformers; database communication connection comparison module.

Preferably, including a protective cover;

One end of the protective cover is connected to the second shell through hinge rotation, the protective cover is arranged on the outside of the button module and the display screen, and the protective cover is made of transparent material.

Preferably, the first casing and the second casing are of an integrated structure, and the first casing is provided with a handle.

Preferably, a USB socket is provided on the second casing for data transmission connection with the central processing unit.

Preferably, it includes a wireless communication module for communicating with the background monitoring terminal;

The wireless communication module is arranged on the circuit board, and the wireless communication module is communicatively connected with the central processing unit.

Preferably, the air intake portion has a cylindrical structure, an outer thread is provided on the outer peripheral surface of the air intake portion, and the air intake portion is threadedly connected to the end of the connecting pipe.

Preferably, the air extraction part has a cylindrical structure, and the air extraction part is connected with the end of the air pipe in a threaded fit.

Preferably, a plurality of supporting feet are included; and the plurality of supporting feet are evenly arranged on the lower end surface of the second casing.

Preferably, it includes a plurality of heat dissipation plates; wherein, the inner wall of the second casing is provided with a plurality of installation grooves for installing the plurality of heat dissipation plates; the bottom surface of each installation groove is provided with a plurality of through holes;

A plurality of pillars are respectively connected to a plurality of heat dissipation plates, the pillars are in one-to-one correspondence with the heat dissipation plates, and the pillars are made of thermally conductive materials.

Preferably, a heat-dissipating silica gel layer is provided on the end surface of each heat-dissipating plate connected to the pillar; each through-hole is filled with heat-dissipating silica gel to form a heat-dissipating silica gel column in the through-hole; the end surface of each heat-dissipating silica gel column is connected to the second shell The ends of the body are flush.

The above-mentioned technical scheme of the present invention has the following beneficial technical effects:

In the present invention, it is necessary to understand the device before use. The current in the faulty transformer circuit is detected by the current detector, and the sound on the inner wall of the transformer is detected by the sound collector. The current detector and the sound collector respectively pass through the data line Connect with the second communication socket and the first communication socket; connect the air inlet part of the first casing with the transformer oil tank of the transformer to be tested through the connecting pipe; connect the air extraction part of the first casing with the vacuum equipment through the gas pipe and discharge the air inside the first shell;

When in use, the transformer oil tank of the transformer is communicated with the inside of the first shell, and the gas in the transformer oil tank of the transformer quickly flows into the first shell under the action of air pressure, and the temperature sensor and the pressure sensor provided in the first shell are connected to the first shell. Check the gas pressure and gas temperature in the transformer oil tank of the transformer; the data acquisition module collects the temperature signal in the transformer oil tank, the air pressure signal in the transformer oil tank, the temperature sensor, the pressure sensor, the sound collector and the current detector. The sound signal in the transformer and the signal of the circuit current in the transformer are received by the central processing unit after being processed by the converter and the data processing module in turn; the central processing unit sends the processed data to the comparison module; the comparison module is based on The abnormal data of the previous transformers stored in the database are analyzed to obtain the cause of the transformer fault, and the detection results can be easily viewed through the display screen; the detection device is portable and easy to use, and can greatly improve the detection efficiency of the transformer fault; the device is in use. It has good heat dissipation and can improve the service life of the equipment.

Description of drawings

FIG. 1 is a schematic three-dimensional structure diagram of a power transformer fault intelligent detection device proposed by the present invention.

FIG. 2 is a schematic structural diagram of a power transformer fault intelligent detection device proposed by the present invention.

FIG. 3 is a schematic structural diagram of a partially enlarged part of A in a power transformer fault intelligent detection device proposed by the present invention.

FIG. 4 is a left side view of a power transformer fault intelligent detection device proposed by the present invention.

FIG. 5 is a schematic block diagram of a power transformer fault intelligent detection device proposed by the present invention.

Reference numerals: 1. First housing; 101. Air intake part; 102, Air extraction part; 2. Handle; 3. Connecting pipe; 4. Second housing; 5. First communication socket; 6. Second Communication socket; 7. USB socket; 8. Power socket; 9. Support feet; 10. Protective cover; 11. Button module; 12. Display screen; 13. Temperature sensor; 14. Pressure sensor; 15. Circuit board; 16. Pillar; 17. Installation slot; 18. Heat sink; 19, Through hole; 20, Heat dissipation silicone layer; 21, Data acquisition module; 22, Converter; 23, Data processing module; 24, Central processing unit; 25, Comparison module 26, database; 27, sound collector; 28, current detector; 29, wireless communication module.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the specific embodiments and the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.

As shown in Figures 1-5, an intelligent detection device for power transformer faults proposed by the present invention includes a first casing 1, a connecting pipe 3 for connecting with the transformer oil empty tank, a second casing 4, a circuit The board 15, the sound collector 27 and the current detector 28; wherein, the sound collector 27 penetrates the inside of the transformer through the audio sensor;

The first housing 1 is provided with a temperature sensor 13 and a pressure sensor 14, the first housing 1 is connected with the second housing 4, and the first housing 1 is provided with an air inlet 101 for connecting with the connecting pipe 3 and a an air extraction part 102 connected with the air inlet end of the vacuuming equipment through a trachea; the air extraction part 102 is provided with a second control valve;

It should be noted that, the connecting pipe 3 is connected with the oil filling end of the transformer oil tank, so that the transformer oil tank is communicated with the inside of the first shell 1 through the connecting pipe 3; the vacuuming equipment is used for connecting the transformer oil tank and the first shell Before the internal connection of 1, the air inside the first shell 1 is drawn out, so that the air pressure inside the first shell 1 is reduced, and the gas in the transformer oil tank quickly flows into the first shell 1 under the action of the pressure difference;

The upper end face of the second casing 4 is provided with a key module 11 and a display screen 12 , and the side end face of the second casing 4 is provided with a first communication socket 5 for cooperating with the sound collector 27 and for cooperating with the current detector 28 The second communication socket 6 and the power socket 8 are provided, and a plurality of pillars 16 are arranged side by side in the second housing 4;

The circuit board 15 is located in the second casing 4, and the circuit board 15 is connected to one end of the plurality of pillars 16 away from the inner wall of the second casing 4. The circuit board 15 is provided with data for matching the first communication socket 5 and the second communication socket 6. an acquisition module 21, a converter 22, a data processing module 23, a central processing unit 24, a comparison module 25, and a database 26 for storing past abnormal records of transformers;

The data acquisition module 21 is respectively connected to the temperature sensor 13 , the pressure sensor 14 and the converter 22 in communication. The temperature signal, the air pressure signal, the sound signal in the transformer and the signal of the circuit current in the transformer are obtained, and the above-mentioned signals collected are sent to the converter 22;

The converter 22 is communicatively connected to the data processing module 23, the converter 22 converts the received electrical signal into a digital signal, and sends the converted signal to the data processing module 23; the data processing module 23 is communicatively connected to the central processing unit 24;

The central processing unit 24 is electrically connected to the power socket 8, and the central processing unit 24 is respectively connected to the button module 11, the display screen 12, the comparison module 25 and the database 26 for storing the abnormal records of the transformer in the past; the database 26 is connected to the comparison module 25 in communication; The power socket 8 is connected to an external power supply to supply power to the device, and the central processing unit 24 sends the processed data to the comparison module 25. The comparison module 25 analyzes the abnormal data of the transformers in the past stored in the database 26, and obtains the cause of the transformer failure, which is displayed on the display screen. 12 is displayed.

In the present invention, it is necessary to understand the device before use. The current in the faulty transformer circuit is detected by the current detector 28 and the sound on the inner wall of the transformer is detected by the sound collector 27. The current detector 28 and the sound collector 27 Connect with the second communication socket 6 and the first communication socket 5 through the data cable respectively; connect the air inlet 101 of the first shell 1 with the transformer oil tank of the transformer to be detected through the connecting pipe 3; connect the first shell through the gas pipe The air extraction part 102 of the 1 is connected to the vacuuming equipment and discharges the air inside the first shell 1; when in use, the transformer oil tank of the transformer is communicated with the inside of the first shell 1, and the gas in the transformer oil tank of the transformer is Under the action of air pressure, it quickly flows into the first shell 1, and the gas pressure and gas temperature in the transformer oil tank of the transformer are checked through the temperature sensor 13 and the pressure sensor 14 provided in the first shell 1; the data acquisition module 21 collects the temperature The temperature signal in the transformer oil tank, the air pressure signal in the transformer oil tank, the sound signal in the transformer and the signal of the circuit current in the transformer detected by the sensor 13, the pressure sensor 14, the sound collector 27 and the current detector 28 are collected. The signal is received by the central processing unit 24 after being processed by the converter 22 and the data processing module 23 in turn; the central processing unit 24 sends the above-mentioned processed data to the comparison module 25; Through analysis, the cause of the transformer fault is obtained, and the detection result can be easily checked through the display screen 12; the detection device is convenient to carry and use, and can greatly improve the detection efficiency of the transformer fault.

In an optional embodiment, a protective cover 10 is included;

One end of the protective cover 10 is connected to the second shell 4 through a hinge, and the protective cover 10 is covered on the outside of the key module 11 and the display screen 12. The protective cover 10 is made of transparent material; It should be noted that the other end of the protective cover 10 is fixed to the second housing 4 through a lock; the lock is a product that can be directly purchased on the existing market. This will not be described in detail. The locking buckle connects the protective cover 10 with the second housing 4 to avoid damage to the key module 11 and the display screen 12 caused by the protective cover 10 being opened under external force.

In an optional embodiment, the first housing 1 and the second housing 4 are of an integrated structure, and a handle 2 is provided on the first housing 1 ; the device is convenient to be picked up by the provided handle 2 .

In an optional embodiment, a USB socket is provided on the second casing 4 for data transmission connection with the central processing unit 24 , and the detection results are conveniently copied to the mobile hard disk through the USB socket.

In an optional embodiment, it includes a wireless communication module 29 for communicating with the background monitoring terminal;

The wireless communication module 29 is arranged on the circuit board 15, and the wireless communication module 29 is connected to the central processing unit 24 for communication, and the detection result is sent to the background monitoring terminal through the wireless communication module 29, so as to facilitate the background technicians to analyze the transformer fault.

In an optional embodiment, the air intake portion 101 has a cylindrical structure, an outer thread is provided on the outer peripheral surface of the air intake portion 101 , and the air intake portion 101 is threadedly connected to the end of the connecting pipe 3 .

In an optional embodiment, the air extraction part 102 is a cylindrical structure, and the air extraction part 102 is threadedly connected to the end of the air pipe.

In an optional embodiment, a plurality of supporting feet 9 are included; the plurality of supporting feet 9 are evenly arranged on the lower end surface of the second housing 4 .

In an optional embodiment, a plurality of heat dissipation plates 18 are included; wherein, the inner wall of the second housing 4 is provided with a plurality of installation grooves 17 for installing the plurality of heat dissipation plates 18 ; the bottom surface of each installation groove 17 Each is provided with a plurality of through holes 19;

The plurality of pillars 16 are respectively connected to the plurality of cooling plates 18, the pillars 16 are in one-to-one correspondence with the cooling plates 18, and the pillars 16 are made of thermally conductive materials;

Further, the pillars 16 are made of but not limited to aluminum alloy materials; the high temperature generated by the operation of the electrical equipment inside the second housing 4 is radiated through the provided heat dissipation plate 18, and the plurality of through holes 19 are communicated with the outside world, and the outside air can It is in contact with the heat dissipation plate 18 to take away the heat energy on the heat dissipation plate 18, so as to achieve the effect of dissipating heat inside the second casing 4 and improve the service life of the device.

In an optional embodiment, a heat-dissipating silica gel layer 20 is provided on the end surface of each heat-dissipating plate 18 connected to the pillar 16 ; each through hole 19 is filled with heat-dissipating silica gel to form a heat-dissipating silica gel column in the through-hole 19 ; The end surface of each heat-dissipating silica gel column is flush with the end surface of the second shell 4; the heat-dissipating silica gel layer 20 provided on the end surface of the heat-dissipating plate 18 improves the heat conduction efficiency between the column 16 and the heat-dissipating plate 18; The silica gel improves the heat dissipation efficiency of the heat dissipation plate 18 .

It should be understood that the above-mentioned specific embodiments of the present invention are only used to illustrate or explain the principle of the present invention, but not to limit the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the protection scope of the present invention. Furthermore, the appended claims of this invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalents of such scope and boundaries.

Claims (10)

1. An intelligent fault detection device for a power transformer, characterized in that it comprises a first casing (1), a connecting pipe (3) for connecting with an empty silo of transformer oil stored in the transformer, a second casing (4), a circuit a board (15), a sound collector (27) and a current detector (28); A temperature sensor (13) and a pressure sensor (14) are arranged in the first casing (1), the first casing (1) is connected with the second casing (4), and the first casing (1) is provided with a an air intake part (101) connected with the connecting pipe (3) and an air extraction part (102) used for connecting with the air inlet end of the vacuum pumping equipment through the air pipe; the air extraction part (102) is provided with a control valve; A key module (11) and a display screen (12) are arranged on the upper end face of the second casing (4), and a first communication socket for matching with the sound collector (27) is arranged on the side end face of the second casing (4). (5) a second communication socket (6) and a power socket (8) for cooperating with the current detector (28), and a plurality of pillars (16) are arranged side by side in the second housing (4); The circuit board (15) is located in the second housing (4), and the circuit board (15) is connected to one end of the plurality of pillars (16) away from the inner wall of the second housing (4). A communication socket (5) and a data acquisition module (21), a converter (22), a data processing module (23), a central processing unit (24), a comparison module (25) and a A database (26) for storing past transformer anomaly records; The data acquisition module (21) is respectively connected in communication with the temperature sensor (13), the pressure sensor (14) and the converter (22); the converter (22) is in communication with the data processing module (23); the data processing module (23) is in communication with the central A processor (24); the central processing unit (24) is electrically connected to the power socket (8), and the central processing unit (24) is respectively communicatively connected to the button module (11), the display screen (12), the comparison module (25) and the A database (26) for storing abnormal records of previous transformers; the database (26) a communication connection comparison module (25). 2. The device for intelligent detection of power transformer faults according to claim 1, characterized in that it comprises a protective cover (10); One end of the protective cover (10) is connected to the second housing (4) through hinge rotation, the protective cover (10) is covered on the outside of the button module (11) and the display screen (12), and the protective cover (10) is made of transparent material. to make. 3. A power transformer fault intelligent detection device according to claim 1, characterized in that the first casing (1) and the second casing (4) are an integrated structure, and the first casing (1) is on the With handle (2). 4 . The intelligent detection device for power transformer faults according to claim 1 , wherein a USB socket is provided on the second housing ( 4 ) for data transmission connection with the central processing unit ( 24 ). 5 . 5. A power transformer fault intelligent detection device according to claim 1, characterized in that it comprises a wireless communication module (29) for communicating with a background monitoring terminal; The wireless communication module (29) is arranged on the circuit board (15), and the wireless communication module (29) is connected in communication with the central processing unit (24). 6. A power transformer fault intelligent detection device according to claim 1, characterized in that the air inlet (101) is a cylindrical structure, and the outer peripheral surface of the air inlet (101) is provided with external threads, The gas part (101) is connected with the end of the connecting pipe (3) in a threaded fit. 7 . The intelligent detection device for power transformer faults according to claim 1 , wherein the air extraction part ( 102 ) has a cylindrical structure, and the air extraction part ( 102 ) is threadedly connected to the end of the gas pipe. 8 . 8. A power transformer fault intelligent detection device according to claim 1, characterized in that it comprises a plurality of supporting feet (9); the plurality of supporting feet (9) are evenly arranged under the second casing (4) end face. 9 . The device for intelligent detection of power transformer faults according to claim 1 , characterized in that it comprises a plurality of cooling plates ( 18 ); wherein, the inner wall of the second housing ( 4 ) is provided with a plurality of cooling plates ( 18 ) for installation a plurality of installation grooves (17) of the heat dissipation plates (18); the bottom surface of each installation groove (17) is provided with a plurality of through holes (19); A plurality of pillars (16) are respectively connected to a plurality of heat dissipation plates (18), the pillars (16) are in one-to-one correspondence with the heat dissipation plates (18), and the pillars (16) are made of thermally conductive materials. 10. A power transformer fault intelligent detection device according to claim 9, characterized in that, a heat-dissipating silica gel layer (20) is provided on the end surface of each heat-dissipating plate (18) connected to the pillar (16); The holes (19) are filled with heat-dissipating silica gel to form heat-dissipating silica gel columns in the through holes (19); the end face of each heat-dissipating silica gel column is flush with the end face of the second housing (4).

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