CN219737351U - Dry-type transformer coil material analyzer - Google Patents

Abstract

The utility model relates to a dry-type transformer coil material analyzer, which comprises an analyzer main body, a test wire, a test coil, an electronic ruler and a tape measure, wherein the analyzer main body is provided with a measuring head; the analyzer main body comprises an ARM processor, a capacity test terminal, a direct current resistance test terminal, a material test terminal and a printer; the processor is electrically connected with a memory SDRAM, an A/D converter, a NANDFLASH memory, a NORFLASH memory, a direct current power source, an alternating current power source, a keyboard, a Bluetooth module, a printer, an LCD display and a USB interface; the A/D converter is respectively connected with the current converter and the voltage converter; the utility model has reasonable design, compact structure and convenient use, and can measure the actual capacity of the transformer, measure the direct current resistance of the transformer coil and accurately analyze the material of the dry-type transformer coil.

Description

Dry-type transformer coil material analyzer

Technical Field

The utility model belongs to the technical field of testing, and particularly relates to a testing instrument for analyzing the coil material of a dry-type transformer.

Background

In the current distribution transformer production, the replacement of copper wires with aluminum wires as conductor materials has become an industry-published rule, and the main reason for this is that aluminum wire transformers can save cost and have stronger economy compared with copper wire transformers. The secondary-charged transformer with aluminum instead of copper has the consequences of larger power consumption of users, poor power consumption quality and easy power accidents.

Disclosure of Invention

The utility model aims to solve the technical problems that in general, a dry-type transformer coil material analyzer, a portable case and a built-in rechargeable battery are provided, so that the material of the dry-type transformer coil can be accurately analyzed in any field, and a test result can be printed on site.

In order to solve the problems, the utility model adopts the following technical scheme:

a transformer coil material analyzer comprises an analyzer main body, a test wire, a test coil, an electronic ruler and a tape measure; the tester comprises a tester main body, a power supply and a power supply, wherein the tester main body comprises an ARM processor, an analyzer panel, a capacity test terminal, a direct current resistance test terminal, a material test terminal, a printer and a USB socket; the ARM processor is electrically connected with an SDRAM memory, an A/D converter, a NANDFLASH memory, a NORFLASH memory, a direct current power source, an alternating current power source, a keyboard, a Bluetooth module, a printer, an LCD display screen and a USB interface; the A/D converter is respectively connected with the direct current converter, the alternating current converter and the voltage converter; the capacity test terminal, the direct current resistance test terminal, the material test terminal, the printer and the USB socket are arranged on the analyzer panel.

As a further improvement of the above technical scheme:

the power source adopts a digital power amplifier, so that the volume and the weight are reduced, and the output efficiency is improved; the LCD display screen is an 8-inch true color liquid crystal screen and is provided with a charged touch screen; the USB interface is a standard USB interface and is used for reading and writing data of the USB flash disk and reading data of the electronic ruler.

In the ARM processor, a serial port 3 is connected with a Bluetooth module, a serial port 1 is connected with a printer, an I2C interface 1 is connected with a keyboard, a USB interface is connected with a standard USB socket of a panel, an LCD controller signal wire is connected with an LCD display screen, the display screen is provided with a power touch screen, PWM output is connected with an alternating current power source and a direct current power source,

the SPI interface is connected with the A/D converter;

the output of the alternating current power source passes through the alternating current converter to be connected with the capacity test terminal and the material test terminal;

the output of the direct current power source passes through the direct current converter and is connected with the direct current resistance test terminal;

the power source current in the capacity, direct current resistance or material test of the transformer is converted into a small voltage signal through an alternating current converter or a direct current converter and is connected into analog input V1, V2 and V3 channels of the A/D converter;

the capacity of the transformer, the test voltage of the direct current resistor or the material test is connected with the analyzer through the capacity test terminal, the direct current resistor test terminal or the material test terminal, and is converted into a small voltage signal through the voltage converter to be connected with the analog input V4, V5 and V6 channels of the A/D converter;

the ARM processor reads the digital signals converted by the A/D converter, calculates the actual capacity and direct current resistance of the user transformer by combining the input related parameters, analyzes the material of the transformer coil, and can be connected with the mobile phone APP to read data on an LCD display screen according to requirements.

The utility model has the advantages of 0.2 level of accuracy, flexible and convenient use, stable and reliable performance, small volume, light weight, convenient carrying, friendly interface and convenient operation, can accurately and rapidly test the actual capacity of the transformer, the direct current resistance of the dry-type transformer coil, the turns of the high-voltage and low-voltage coils of the transformer, analyze the material of the transformer coil, and can upload test data to a cloud platform or other software systems. The utility model has reasonable design, low cost, firmness, durability, safety, reliability, simple operation, time and labor saving, fund saving, compact structure and convenient use.

Drawings

Fig. 1 is a functional block diagram of the present utility model.

Fig. 2 is an electrical schematic diagram of the present utility model.

Detailed Description

Embodiment 1 as shown in fig. 1-2, an embodiment of the present utility model provides a dry-type transformer coil material analyzer, including an analyzer body; the analyzer main body is provided with a voltage test line, a test coil and an electronic ruler, and is also matched with a tape measure; wherein, the liquid crystal display device comprises a liquid crystal display device,

the analyzer body comprises a capacity test terminal 38, a direct resistance test terminal 37, a material test terminal 36, a USB socket 39, a printer 35, a 32-bit high-speed ARM microprocessor 20, a memory SDRAM21, a flash NORFLASH22, a flash NANDFLASH23, a 16-bit A/D converter 24, a Bluetooth module 25, a keyboard 27, an LCD display screen 26 of 8-inch color liquid crystal, a capacitive touch screen and a standard USB

An interface 28;

the program software of the analyzer main body adopts a uCOSIII operating system, a uCGUI graph and a FatFs file system;

ARM microprocessor 20 is connected with SDRAM21, NORFLASH22, NANDFLASH23, 16-bit A/D converter 24, bluetooth module 25, keyboard 27, LCD display 26 and capacitive touch screen of 8 inch color liquid crystal, standard USB interface 28, AC power source 29 and DC power source 30;

ARM micro-processing 20, namely selecting LPC1788FDB208, designing with low power consumption, and arranging an LCD controller, a 96K byte RAM, a 512K byte program memory, an I2C interface, an SPI interface and a UART interface in the ARM micro-processing; the ARM micro-processing calculates the actual capacity and direct current resistance of the user transformer, and analyzes the material of the transformer coil.

The a/D converter 24 is connected to the secondary of the dc converter 31 or the ac converter 32 and the secondary of the voltage converter 33, respectively.

Referring to FIG. 2, ARM microprocessor 20 is a low power programmable microprocessor of model LPC1788FDB 208; SDRAM21, HY57V561620T-H; NANDFLASH23 is adopted by K9F8G08UOA; NORFLASH22, 39VF6401 is adopted; the A/D converter 24 is a low-cost and low-power module with all WiFi, bluetooth and FM functions, and the highly integrated module enables web browsing, voIP, bluetooth headset, FM radio function applications and other applications, seamless roaming and advanced security, and can be used in a wireless local area network, by selecting a 16-bit 250K conversion rate analog-to-digital converter AD7606BSTZ, a Bluetooth module 25, and an AP6212

The 802.11b/g/n access points interact;

a keyboard 27, which adopts a CH452 control chip; a printer 35 which is a panel-mounted micro thermal printer; an LCD display 26, an 8 inch true color LCD display, with a live touch screen; USB (universal serial bus)

The interface 28 is a standard USB interface and is used for reading and writing data of the USB flash disk and reading data of the electronic ruler;

the AC current transformer 32 adopts a through current transformer, a 0.02 level current transformer is selected for measuring the current of the capacity test or the material test of the transformer, a 1J85 permalloy iron core is adopted, the magnetic permeability is high, the linearity is good, a shielding cover is additionally arranged, the anti-interference capability is strong, and the current range of 0.01A-10A meets 0.02

A level accuracy class requirement;

the DC current transformer 31 adopts a through Hall DC current transformer for measuring the DC current of the transformer

Direct current at the time of resistance;

the voltage converter 33 employs a precision resistor voltage division method, and the dc voltage and the ac voltage can be used in common. The transformer coil material analyzer has the advantages of small volume, light weight, portability, convenient and quick operation, safe and reliable use, and is suitable for testing various transformer capacities and direct current resistances and analyzing coil materials.

The functions of the analyzer body are displayed in the form of icons, different icons are clicked, and the analyzer implements the corresponding functions.

The operation flow of the transformer coil material analyzer comprises the following steps:

step one: the field wiring is carried out, the test coil winds the coil of the dry-type transformer, and the test wire is correspondingly connected with the low-voltage side voltage binding post and the high-voltage side binding post of the transformer.

Step two: the on-site tester turns on the analyzer power switch, the analyzer display interface, and waits for the tester to select a function.

Step three: the field tester clicks a 'texture test' icon of the analyzer, the analyzer displays an interface, and corresponding contents are input in an upper left corner parameter input area; measuring the total height of the high-voltage package and the total height of the low-voltage package of the transformer by using a tape measure, measuring the thickness of the high-voltage package and the thickness of the low-voltage package of the transformer by using an electronic ruler, and filling the positions of the high-voltage package and the low-voltage package of the transformer into corresponding data windows. Clicking on "start test" after input is completed.

Step four: the analyzer enters a testing state, an interface is displayed on the analyzer, and testing data are displayed on corresponding data fields; the on-site tester clicks a button of a functional box on the right side of the analyzer to complete a corresponding function, such as clicking a 'print result', the printer prints out a test result report, clicking a 'save result', saving test data in a memory, clicking a 'exit', and returning to a functional interface.

Step five: the field tester clicks on other functional icons of the analyzer to perform corresponding functional tests, such as: and (5) capacity test and direct resistance test.

The utility model can measure the actual capacity of the transformer, the direct current resistance of the transformer coil and the material of the transformer coil on site, and has the advantages of small volume, light weight, portability, convenient and quick operation and safe and reliable use.

The USB interface 28 adopts a standard USB interface for data reading and writing of the USB flash disk, and an external electronic ruler can be connected

For reading measured data

The dc power source 30 outputs a test power supply required for the dc resistance test of the transformer.

The present utility model is fully described for more clarity of disclosure and is not set forth in the prior art.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; it is obvious to a person skilled in the art to combine several embodiments of the utility model. Such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (7)

1. A dry-type transformer coil material analyzer, its characterized in that: comprises an analyzer body; the analyzer main body is electrically connected with a test wire, a test coil and/or an electronic ruler;

the analyzer body comprises an ARM processor (20), an analyzer panel (40), a capacity test terminal (38), a direct current resistance test terminal (37) and a material test terminal (36);

the ARM processor (20) is electrically connected with an SDRAM memory (21), an A/D converter (24), a NANDFLASH memory (23) and a NORFLASH memory (22) respectively;

the A/D converter (24) is respectively connected with a direct current converter (31), an alternating current converter (32) and a voltage converter (33);

a capacity test terminal (38), a DC resistance test terminal (37), and a material test terminal (36) are mounted on an analyzer panel (40).

2. The dry-type transformer coil texture analyzer of claim 1, wherein: the analyzer body is matched with a tape measure.

3. The dry-type transformer coil texture analyzer of claim 2, wherein: a printer (35), a keyboard (27), a USB interface (28) and a USB socket (39) of the panel which are respectively and electrically connected with the ARM processor (20) are arranged on the analyzer panel (40);

a printer (35) for printing the test results;

the USB interface (28) adopts a standard USB interface for reading and writing data of the USB flash disk, and the external electronic ruler can be used for reading measurement data.

4. A transformer coil texture analyser according to claim 3, wherein: the ARM processor (20) is respectively and electrically connected with the ARM processor;

the alternating current power source (29) outputs a three-phase power source and a power source required by material testing;

a DC power source (30) outputs a test power supply required for testing the DC resistance of the transformer.

5. The transformer coil texture analyzer of claim 4, wherein: in the ARM processor (20),

the ARM processor (20) is connected with the Bluetooth module (25), the USB interface (28) is connected with the standard USB socket (39), and the LCD controller signal line is connected with the LCD display screen (26);

the LCD display screen (26) is a liquid crystal screen with a charged touch screen;

an alternating current power source (29) and a direct current power source (30) are connected to PWM output, and an SPI interface is connected with the A/D converter (24).

6. The transformer coil texture analyzer of claim 5, wherein: an alternating current power source (29) outputs a voltage across an alternating current converter (32) connecting a capacity test terminal (38) and a texture test terminal (36); the output of the direct current power source (30) passes through the direct current converter (31) and is connected with the direct current resistance test terminal (37);

when the capacity, the direct resistance or the material quality of the transformer is tested, the current of the direct current power source (30) or the alternating current power source (29) is converted into a small voltage signal through the alternating current converter (32) or the direct current converter (31) and is connected to the analog input channels V1, V2 and V3 of the A/D converter (24);

when the capacity, the direct resistance or the material of the transformer is tested, test voltage is connected into an analyzer main body through a capacity test terminal (38), a direct current resistance test terminal (37) or a material test terminal (36), and is converted into a small voltage signal through a voltage converter (33) to be connected into analog input V4, V5 and V6 channels of an A/D converter (24);

the ARM processor (20) reads the digital signal converted by the A/D converter (24).

7. The transformer coil texture analyzer of claim 5, wherein: the Bluetooth module (25) is connected with the mobile phone APP and reads data.