A non-contact transformer oil pillow level measuring device

Abstract

This utility model discloses a non-contact transformer oil conservator level measuring device, belonging to the field of online transformer oil conservator measurement technology. The utility model includes an oil conservator level gauge, a repeater, an ultrasonic transmitter and receiver, and a synchronization button. The repeater includes a housing made of ABS material, comprising a matching upper and lower housing. The level gauge mainboard is fixedly installed inside the housing, and includes a controller, a communication module, a transmitting circuit, and a receiving circuit. This utility model is not only safe and reliable, but also provides accurate measurement, saves time and effort, and is extremely easy to install. Furthermore, this solution successfully avoids the risk of false level alarms caused by oil sacs in the oil conservator. After collecting data from 1-4 sensors, the repeater processes the data using an algorithm to obtain the correct level value and transmits the data to the host computer.

Description

Technical Field

[0001] This utility model relates to the field of online measurement technology for transformer oil conservator, specifically a non-contact transformer oil conservator level measuring device. Background Technology

[0002] Currently, the measurement and inspection of transformer oil level mainly uses two types of field oil level gauges: glass tube oil level gauges and pointer oil level gauges. Neither type has a remote signal transmission function, requiring on-site visual inspection or binocular observation. The accuracy of oil level checks relies heavily on the experience of the inspectors. Furthermore, due to prolonged transformer operation, sludge buildup on the inner wall of the glass tube can cause the bellows track to jam or crack, leading to the failure of tube oil level gauges. Additionally, sludge accumulation can cause pointer oil level gauges to malfunction.

[0003] In existing technologies, although external ultrasonic level gauges can measure the remaining oil level in the oil conservator, the deformation of the oil bladder during oil level changes causes the ultrasonic level gauge to receive false echoes or even fail to receive the return wave, making it impossible for the level gauge to detect the correct level value. Moreover, since oil conservators are all enclosed, the maintenance and replacement of existing level gauges require power outages, opening holes, and draining oil, which is very complicated. Therefore, it is essential to have a stable, non-contact online monitoring device for measuring the level of transformer oil conservators. Utility Model Content

[0004] The purpose of this invention is to provide a non-contact transformer oil conservator level measuring device, which is not only safe and reliable, but also accurate, time-saving and labor-saving. The entire device is extremely easy to install, and this solution can successfully avoid the risk of false level alarms caused by the oil bladder in the oil conservator. After the repeater collects data from 1-4 sensors, it processes the data through an algorithm to obtain the correct level value and transmits the data to the host computer or uploads the data to the cloud specified by the user.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model is a non-contact transformer oil conservator level measuring device, including an oil conservator level gauge, a repeater, an ultrasonic transmitter and receiver and a synchronization button (13). The repeater includes a shell, which is made of ABS material and includes a matching upper shell and a lower shell. The main board of the level gauge is fixedly installed inside the shell. The main board of the level gauge is equipped with a controller, a communication module, a transmitting circuit and a receiving circuit.

[0007] The ultrasonic transmitter and receiver are located on the upper side of the liquid level gauge main board and are fixedly installed inside the housing. The ultrasonic transmitter and receiver includes a piezoelectric ceramic, a delay layer and a matching layer. The piezoelectric ceramic, the delay layer and the matching layer are connected and stacked in sequence from top to bottom. The piezoelectric ceramic is connected to the liquid level gauge main board through a wire.

[0008] The synchronization button is located on one side of the bottom of the liquid level gauge motherboard, and a through hole is provided at the bottom of the housing for the synchronization button to pass through.

[0009] Furthermore, the outer casing includes a matching upper casing and a lower casing, with the top surface of the upper casing forming an arc-shaped surface that matches the bottom of the transformer oil conservator.

[0010] Furthermore, it also includes a battery, which is located inside the housing and placed on both sides of the level gauge motherboard.

[0011] Furthermore, it also includes a magnet and a delay layer. The upper housing has a positioning through hole for placing an iron ring. The iron ring is fixed in the upper housing, and the ferromagnet is attracted to the iron ring. The delay layer is set inside the magnet.

[0012] Furthermore, the level gauge motherboard is wirelessly connected to a repeater, and one repeater can connect to no more than four level gauge motherboards.

[0013] This utility model has the following beneficial effects:

[0014] This invention provides a non-contact transformer oil conservator level measuring device that is not only safe and reliable, but also accurate, time-saving, and labor-saving. The entire device is extremely easy to install, and this solution can successfully avoid the risk of false level alarms caused by oil sacs in the oil conservator. After the repeater collects data from 1-4 sensors, it processes the data through an algorithm to obtain the correct level value and transmits the data to the host computer or uploads the data to the cloud designated by the user. The remaining oil level in the oil conservator can be displayed intuitively through a mobile APP, allowing users to check the remaining oil level in the transformer oil conservator at any time via their mobile phone or software platform.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] Figure 1 This is an overview diagram of a non-contact transformer oil conservator level measuring device according to the present invention;

[0017] Figure 2 This is a schematic diagram of the installation structure of a non-contact transformer oil tank level measuring device according to the present invention;

[0018] Figure 3This is an exploded structural diagram of a non-contact transformer oil tank level measuring device according to the present invention.

[0019] Figure 4 This is an overall perspective view of a non-contact transformer oil conservator level measuring device according to the present invention.

[0020] Figure 5 This is a schematic diagram of the ultrasonic transmitting and receiving device of a non-contact transformer oil conservator level measuring device according to the present invention.

[0021] Figure 6 This is a schematic diagram of the main structure of a non-contact transformer oil tank level measuring device.

[0022] In the diagram: 1. Oil level gauge; 2. Repeater; 3. Matching layer; 4. Magnet; 5. Iron ring; 6. Housing; 7. Battery wire; 8. Level gauge mainboard; 9. Battery; 10. Transformer oil tank; 11. Waterproof gasket; 12. Back cover; 13. Synchronization button; 14. Screw; 15. Installation aid; 16. Piezoelectric ceramic; 17. Delay layer; 18. Wire; 19. Ultrasonic transmitter and receiver; 20. Mobile phone. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 This utility model provides a technical solution: a non-contact transformer oil tank level measuring device, including an oil tank level gauge 1 and a repeater 2. The repeater 2 includes a housing 6, which is made of ABS material and includes a matching upper housing and a lower housing. The level gauge main board 8 is fixedly installed inside the housing 6. The level gauge main board 8 is equipped with a controller, a communication module, a transmitting circuit, and a receiving circuit.

[0025] It also includes an ultrasonic transmitter and receiver 19, which is located on the upper side of the liquid level gauge main board 8 and is fixedly installed inside the housing 6. The ultrasonic transmitter and receiver 19 includes a piezoelectric ceramic 16, a delay layer 17 and a matching layer 3. The piezoelectric ceramic 16, the delay layer 17 and the matching layer 3 are connected and stacked in sequence from top to bottom. The piezoelectric ceramic 16 is connected to the liquid level gauge main board 8 through a wire 18.

[0026] It also includes a synchronization button 13, which is located on one side of the bottom of the liquid level gauge main board 8, and a through hole for the synchronization button 13 is reserved at the bottom of the housing 6.

[0027] It also includes a battery 9, which is located inside the housing 6 and is placed on both sides of the level gauge mainboard 8.

[0028] It also includes a magnet 4, and a positioning through hole for placing an iron ring 5 is reserved on the upper housing. The iron ring 5 is fixed in the upper housing, and the magnet 4 is attracted to the iron ring 5. The delay layer 17 is disposed inside the magnet 4.

[0029] The level gauge motherboard 8 can not only wirelessly connect to the mobile phone 20, but also wirelessly connect to the repeater 2.

[0030] The ultrasonic transmitting and receiving device includes a matching layer, a delay layer, a piezoelectric ceramic, and a closed-loop magnet. The matching layer is connected to the delay layer, the delay layer is connected to the piezoelectric ceramic, and the piezoelectric ceramic is connected to the host via a wire.

[0031] The transformer oil conservator is a steel tank, and the liquid level detection device is attached to the bottom center of the oil conservator by a magnet.

[0032] The controller controls the ultrasonic sensor to perform ultrasonic detection to determine the liquid level of liquefied coal gas. Simultaneously, after signal conversion processing, the ultrasonic sensor sends the detected liquid level margin back to the controller. The controller times the time from the start of ultrasonic wave emission to the end of ultrasonic wave reception and sends the time taken as an electrical signal to a mobile APP or repeater via Bluetooth. The mobile APP or repeater calculates the actual liquid level in the oil tank using the following formula: TOF / 2*V=H.

[0033] The repeater includes a wireless communication module, a data processing unit, a data transmission unit, a housing, and an antenna. The wireless communication module includes a wireless receiving function, which can simultaneously receive wireless data sent by no more than four oil tank level gauges. The data processing unit, after receiving wireless data from four oil tank level gauges, calculates the correct liquid level and tank temperature using a dedicated algorithm. The data transmission unit sends the liquid level and tank temperature calculated by the dedicated algorithm to the user in wired or wireless form.

[0034] Each repeater 2 can connect to up to four level gauge motherboards 8. The entire device is not only safe and reliable, but also cleverly avoids the measurement risks caused by the oil bladder, making the entire device accurate, time-saving and labor-saving, and extremely easy to install.

[0035] In practical applications, the oil level gauge 1 is first installed at the center of the bottom of the transformer oil conservator 10 using a magnet 4. After the device is started, the controller on the main board 8 of the level gauge controls the transmitting circuit to drive the ultrasonic transmitting and receiving device 19 to emit ultrasonic waves. The ultrasonic waves penetrate the oil conservator wall and enter the interior of the oil conservator. After being reflected by the oil surface, the receiving device transmits the echo signal to the receiving circuit. The receiving circuit processes the signal and sends it to the controller. The controller records the round-trip time of the ultrasonic waves and sends this time information as an electrical signal to the repeater 2 or mobile phone 20 APP via a wireless communication module. After receiving the data, the repeater 2 transmits the data to the data processing unit via its wireless communication module. The data processing unit uses a dedicated algorithm to fuse the data from multiple oil level gauges 1 to calculate the accurate liquid level height and tank temperature. Finally, the data transmission unit sends the processed data to the user. The user can view the liquid level information of the transformer oil conservator 10 in real time through the mobile phone 20 APP or the host computer software.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A non-contact transformer oil pillow level measuring device comprising an oil pillow level gauge (1), a repeater (2) and a level gauge main board (8), characterized in that: The repeater (2) includes a housing (6), and the liquid level gauge main board (8) is fixedly installed inside the housing (6). The liquid level gauge main board (8) is equipped with a controller, a communication module, a transmitting circuit, and a receiving circuit. It also includes an ultrasonic transmitter and receiver (19), which is located on the upper side of the liquid level gauge main board (8) and is fixedly installed in the housing (6). The ultrasonic transmitter and receiver (19) includes a piezoelectric ceramic (16) and a matching layer (3). The piezoelectric ceramic (16) and the matching layer (3) are connected and stacked sequentially from top to bottom. The piezoelectric ceramic (16) is connected to the liquid level gauge main board (8) through a wire (18). It also includes a synchronization button (13), which is located on one side of the bottom of the liquid level gauge main board (8), and the bottom of the housing (6) has a through hole through which the synchronization button (13) passes.

2. A non-contact transformer oil pillow level measuring device according to claim 1, characterized in that: The outer casing (6) includes a matching upper casing and a lower casing, the top surface of which forms an arc-shaped surface that matches the bottom of the transformer oil conservator (10).

3. A non-contact transformer oil pillow level measuring device according to claim 1, characterized in that: It also includes a battery (9) disposed inside the housing (6), the battery (9) being placed on both sides of the level gauge mainboard (8).

4. A non-contact transformer oil pillow level measuring device according to claim 2, characterized in that: It also includes a magnet (4) and a delay layer (17). The upper housing has a positioning through hole for placing an iron ring (5). The iron ring (5) is fixed in the upper housing. The magnet (4) is attracted to the iron ring (5). The delay layer (17) is disposed inside the magnet (4).

5. A non-contact transformer oil pillow level measuring device according to claim 1, characterized in that: The level gauge motherboard (8) is wirelessly connected to the repeater (2), and one repeater (2) can connect to no more than four level gauge motherboards (8).

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