Discharge gap ranging device and transformer

Abstract

The utility model relates to transformer technical field discloses discharge gap ranging device and transformer, and discharge gap ranging device includes ranging module, control module, display module and casing, is equipped with transmitting end and receiving end on ranging module, transmitting end and receiving end are towards two discharge ends on transformer neutral point, control module is connected with ranging module signal, display module is connected with control module signal, the inside of casing is empty cavity, is equipped with the mounting port on the casing, and ranging module and control module are installed in the casing, and display module is installed on the mounting port, the utility model discloses non - contact type ranging module sends to discharge end and receives the return signal, and control module carries out operation processing to signal, can calculate the actual distance value of the discharge gap of two discharge ends according to specific algorithm, and staff need not approach the high voltage area of transformer neutral point, greatly reduced the risk of electric shock, and the safety of staff is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to a discharge gap ranging device and a transformer. Background Technology

[0002] In power system operation, transformers are critical equipment, and their neutral point discharge gap is essential for protecting transformer insulation. When abnormal conditions such as overvoltage occur in the power system, the discharge gap can quickly discharge, preventing the overvoltage from damaging the transformer's neutral point insulation.

[0003] In existing technologies, the detection of the neutral point discharge gap distance in transformers mainly relies on manual, periodic inspections. Workers need to use simple measuring tools such as calipers and rulers to conduct measurements during power outages for maintenance. However, this traditional measurement method suffers from numerous drawbacks, including poor safety, low efficiency, and insufficient accuracy. Utility Model Content

[0004] In view of this, the present invention provides a discharge gap measuring device and a transformer to solve the problems of poor safety, low efficiency and insufficient accuracy in the existing technology of manually measuring the discharge gap of the neutral point of a transformer.

[0005] In a first aspect, this utility model provides a discharge gap ranging device, including a ranging module, a control module, a display module, and a housing. The ranging module is provided with a transmitter and a receiver. The transmitter is adapted to emit a ranging signal, and the receiver is adapted to receive the ranging signal. The transmitter and receiver face the two discharge ends on the neutral point of the transformer. The control module is signal-connected to the ranging module, and the display module is signal-connected to the control module. The housing is hollow inside, and a mounting port is provided on the housing. The ranging module and the control module are installed inside the housing, and the display module is installed on the mounting port.

[0006] Beneficial effects: This utility model uses a non-contact ranging module to send and receive return signals to the discharge end. The control module processes the signals and calculates the actual distance between the two discharge ends based on a specific algorithm. Workers do not need to approach the high-voltage area of ​​the transformer neutral point, which greatly reduces the risk of electric shock and ensures the safety of workers.

[0007] In one optional embodiment, the discharge gap ranging device further includes an alarm module, which is mounted on the housing and is signal-connected to the control module.

[0008] Beneficial effects: When the control module determines that the discharge gap distance exceeds the safe threshold range, the control alarm module immediately issues a strong audible and visual warning signal to remind on-site personnel to pay attention.

[0009] In one alternative embodiment, a protective sleeve is fitted over the outer surface of the housing.

[0010] Beneficial effects: This utility model has a protective sleeve on the outside of the housing. The surface of the protective sleeve is coated with a special anti-corrosion coating, which can effectively resist chemical corrosion and physical wear in harsh environments, while enhancing insulation performance and ensuring that the sensor operates safely and reliably in high-voltage environments.

[0011] In one alternative implementation, a protective plate is provided on the mounting port, and the protective plate is located above the display module.

[0012] Beneficial effects: The protective plate of this utility model can effectively prevent the display module from being scratched, and at the same time can automatically decompose the stains on the surface of the display module, maintaining the clarity of the display module.

[0013] In one optional embodiment, the discharge gap ranging device further includes a power management module, which is disposed inside the housing and is electrically connected to the ranging module, the display module, and the control module.

[0014] Beneficial effects: The power management module of this utility model can provide a stable and reliable power supply for the entire device, and it has overvoltage and overcurrent protection functions to prevent abnormal power conditions from damaging the device.

[0015] In one alternative implementation, the power management module includes a battery and a power converter. The battery is housed within a housing and is electrically connected to the ranging module, the display module, and the control module. The power converter is electrically connected to the battery.

[0016] Beneficial effects: The battery in this invention can be automatically put into use in the event of a power outage or power failure, ensuring that the device can still work normally for a certain period of time and guaranteeing the continuity of measurement and display.

[0017] In one alternative implementation, the alarm module includes an alarm and a communication module. The alarm is mounted on the housing, and the communication module is mounted inside the housing. The communication module is signal-connected to the control module and the alarm.

[0018] Beneficial effects: The alarm in this invention can emit a strong audible and visual warning signal to alert on-site personnel. The communication module sends alarm information to the mobile terminals of maintenance personnel via SMS or instant messaging, ensuring that staff can respond and handle abnormal situations promptly.

[0019] In one alternative implementation, the housing is provided with a data interface, which is connected to the control module and is adapted to connect to external devices.

[0020] Beneficial effects: This utility model is equipped with a data interface, which can interact with external devices via Wi-Fi or Bluetooth, making it convenient for staff to use mobile devices (such as tablets) to view detailed measurement data and equipment operating status at close range.

[0021] In one alternative embodiment, the discharge gap ranging device further includes a mounting bracket, on which the housing is mounted.

[0022] Secondly, this utility model also provides a transformer, including a bracket, a body, a discharge end, and the aforementioned discharge gap measuring device. The body is mounted on the bracket, and two discharge ends are arranged adjacently on the bracket. The two discharge ends are electrically connected to the body. The discharge gap measuring device is mounted on the bracket, with the transmitting end facing one discharge end and the receiving end facing the other discharge end. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of a discharge gap ranging device according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the internal structure of a discharge gap ranging device according to an embodiment of the present invention; Figure 3 This is a front view of a transformer according to an embodiment of the present utility model; Figure 4 for Figure 3 Sectional view of AA.

[0025] Explanation of reference numerals in the attached figures: 1. Ranging module; 101. Transmitter; 102. Receiver; 2. Control module; 3. Display module; 4. Housing; 5. Alarm module; 501. Alarm; 502. Communication module; 6. Power management module; 601. Battery; 602. Power converter; 7. Mounting bracket; 100. Discharge gap ranging device; 200. Support; 300. Body; 400. Discharge end. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In related technologies, traditional measurement methods for transformer discharge gaps have many obvious drawbacks, such as: Poor safety: Due to the complex operating environment of transformers and the presence of high voltage, workers face serious safety risks such as electric shock when they approach the equipment for measurement operations. Even with strict safety protection measures, it is difficult to completely eliminate the potential dangers.

[0028] Inefficient: Manual measurement requires staff to climb to high places and operate in confined spaces, making the process cumbersome and time-consuming, severely impacting work efficiency. This is especially true for large substations, where testing numerous transformers can lead to prolonged power outages, disrupting the normal power supply of the power system.

[0029] Insufficient accuracy: During manual measurement, factors such as reading errors, measurement angle deviations, and the accuracy limitations of the measuring tools themselves can make it difficult to guarantee high accuracy in the measurement results. This may lead to misjudgment of the state of the discharge gap and failure to detect potential safety hazards in a timely manner.

[0030] The following is combined with Figures 1 to 4 The following describes embodiments of the present invention.

[0031] According to embodiments of the present invention, on the one hand, such as Figure 1 and Figure 2 As shown, a discharge gap ranging device 100 is provided, including a ranging module 1, a control module 2, a display module 3, and a housing 4. The ranging module 1 is provided with a transmitter 101 and a receiver 102. The transmitter 101 is adapted to emit a ranging signal, and the receiver 102 is adapted to receive a ranging signal. The transmitter 101 and the receiver 102 face the two discharge terminals 400 on the neutral point of the transformer. The control module 2 is signal-connected to the ranging module 1, and the display module 3 is signal-connected to the control module 2. The housing 4 is hollow inside and has an installation port. The ranging module 1 and the control module 2 are installed inside the housing 4, and the display module 3 is installed on the installation port.

[0032] Specifically, such as Figure 1As shown, in this embodiment, the housing 4 has a cubic structure. The display module 3 is installed on the mounting port on the front of the housing 4. The ranging module 1 is installed inside the housing 4. The transmitting end 101 and the receiving end 102 on the ranging module 1 extend out of the mounting port on the side of the housing 4 and face the two discharge ends 400 on the neutral point of the transformer. The control module 2 is installed inside the housing 4 and is signal connected to the ranging module 1. It is used to process the measurement signal of the ranging module 1. After processing, the control module 2 sends the measurement result to the display module 3 to output the measurement result.

[0033] In this embodiment, the ranging module 1 is not specifically limited. For example, in this embodiment, the ranging module 1 uses a laser ranging sensor. The laser ranging sensor has a high-frequency data acquisition capability, capable of acquiring distance data multiple times per second, ensuring that the acquired distance information is accurate and real-time. The transmitting end 101 and the receiving end 102 of the laser ranging sensor are precisely aligned with the two endpoints of the discharge gap for accurate measurement of the distance between the discharge gaps. The high-frequency data acquisition and high-precision measurement characteristics of the laser ranging sensor, combined with data processing algorithms, enable rapid and accurate measurement of the discharge gap distance, effectively avoiding human measurement errors and improving measurement efficiency and accuracy.

[0034] In this embodiment, the display module 3 is equipped with a high-resolution, high-contrast OLED display screen, which can intuitively display the real-time distance value of the discharge gap and the historical distance change curve in both digital and graphical formats. The display screen has a touch interaction function, allowing staff to view detailed data information, such as the distance fluctuation range and average value within a specific time period, through touch operation. The high-resolution OLED display screen intuitively displays measurement data in a combination of digital and graphical methods, and the touch interaction function facilitates staff to obtain detailed information and promptly grasp the status of the discharge gap.

[0035] In this embodiment, the control module 2 includes a signal conditioning circuit, a microprocessor, and a storage unit integrated within a metal shielded box. The control module 2 is connected to the ranging module 1 via a shielded cable to ensure stable signal transmission and reduce electromagnetic interference.

[0036] This invention employs a non-contact ranging module 1 to send and receive return signals to the discharge terminal 400. The control module 2 processes the signals and calculates the actual distance between the two discharge terminals 400 based on a specific algorithm. This eliminates the need for workers to approach the high-voltage area of ​​the transformer neutral point, greatly reducing the risk of electric shock and ensuring the safety of workers.

[0037] In one embodiment, such as Figure 2 As shown, the discharge gap ranging device 100 also includes an alarm module 5, which is mounted on the housing 4 and is signal-connected to the control module 2.

[0038] In this embodiment, when the control module 2 determines that the discharge gap distance exceeds the safe threshold range, the control module 2 sends an alarm signal to the alarm module 5, and the alarm module 5 immediately emits a strong audible and visual warning signal to remind the on-site personnel to pay attention.

[0039] This utility model is equipped with an alarm module 5, which can promptly issue audible and visual alarms and remote wireless alarms when the discharge gap distance is abnormal, ensuring that maintenance personnel can respond quickly, effectively preventing transformer failures caused by abnormal discharge gaps, and ensuring the stable operation of the power system.

[0040] In one embodiment, a protective sleeve is fitted over the outer surface of the housing 4.

[0041] Specifically, in this embodiment, the protective sleeve is a high-strength insulating protective sleeve.

[0042] This utility model features a protective sleeve on the outer shell 4. The surface of the protective sleeve is coated with a special anti-corrosion coating, which can effectively resist chemical corrosion and physical wear in harsh environments, while enhancing insulation performance and ensuring that the sensor operates safely and reliably in high-voltage environments.

[0043] In one embodiment, a protective plate is provided on the mounting port, and the protective plate is located above the display module 3.

[0044] Specifically, in this embodiment, the mounting port is provided with a glass panel that is scratch-resistant, wear-resistant and has a self-cleaning function. The glass panel is made of special nanomaterials, and the display screen on the display module 3 is located below the protective plate.

[0045] The protective plate of this utility model can effectively prevent the display module 3 from being scratched, and can also automatically decompose the stains on the surface of the display module 3 to maintain the clarity of the display module 3.

[0046] In one embodiment, such as Figure 2 As shown, the discharge gap ranging device 100 also includes a power management module 6, which is disposed inside the housing 4 and is electrically connected to the ranging module 1, the display module 3 and the control module 2.

[0047] Specifically, in this embodiment, the power management module 6 is installed in the housing 4. The power management module 6 is electrically connected to the ranging module 1, the display module 3, the control module 2, and the alarm module 5, and is used to provide power to each module in the device.

[0048] This utility model is equipped with a power management module 6, which can provide a stable and reliable power supply for the entire device. It has overvoltage and overcurrent protection functions to prevent abnormal power conditions from damaging the device.

[0049] In one embodiment, such as Figure 2As shown, the power management module 6 includes a battery 601 and a power converter 602. The battery 601 is disposed inside the housing 4 and is electrically connected to the ranging module 1, the display module 3 and the control module 2. The power converter 602 is electrically connected to the battery 601.

[0050] Specifically, this embodiment does not impose any specific limitations on the power converter 602. For example, this embodiment uses an AC-DC power converter 602 to convert the AC mains power in the substation into the DC voltage required by each module of the device.

[0051] In this embodiment, the battery 601 is not specifically limited. For example, in this embodiment, the battery 601 is a lithium battery 601. The battery 601 is connected to the power converter 602, which can charge the battery 601.

[0052] This utility model is equipped with a battery 601 that can be automatically put into use in the event of a power outage or power failure, ensuring that the device can still work normally for a certain period of time and guaranteeing the continuity of measurement and display.

[0053] In one embodiment, such as Figure 2 As shown, the alarm module 5 includes an alarm 501 and a communication module 502. The alarm 501 is mounted on the housing 4, and the communication module 502 is mounted inside the housing 4. The communication module 502 is connected to the control module 2 and the alarm 501 via signals.

[0054] Specifically, in this embodiment, the alarm 501 is installed on the outer wall of the housing 4 and is connected to the control module 2 by signal. The communication module 502 is installed inside the housing 4 and is connected to the control module 2 by signal.

[0055] In this embodiment, the alarm 501 is installed in a conspicuous location on the outside of the housing 4 where sound propagation is good, ensuring that the alarm sound can be clearly heard on site. The communication module 502 is connected to the communication interface of the control module 2, and the communication parameters are configured to ensure that the alarm information can be accurately sent to the mobile terminal of the maintenance personnel.

[0056] In this invention, when the microprocessor determines that the discharge gap distance exceeds the safety threshold, the control module 2 sends an alarm signal to the alarm 501. The alarm 501 emits a strong audible and visual warning signal to alert on-site personnel. The communication module 502 sends the alarm information to the mobile terminal of the maintenance personnel via SMS or instant messaging, ensuring that personnel can respond and handle abnormal situations promptly.

[0057] In one embodiment, the housing 4 is provided with a data interface, which is connected to the control module 2 and is adapted to be connected to external devices.

[0058] This utility model is equipped with a data interface, which can interact with external devices via Wi-Fi or Bluetooth, making it convenient for staff to use mobile devices (such as tablets) to view detailed measurement data and equipment operating status at close range.

[0059] In one embodiment, such as Figure 3 and Figure 4 As shown, the discharge gap ranging device 100 also includes a mounting frame 7, and the housing 4 is mounted on the mounting frame 7.

[0060] According to an embodiment of the present invention, on the other hand, as... Figure 3 and Figure 4 As shown, a transformer is also provided, including a bracket 200, a body 300, a discharge end 400, and the aforementioned discharge gap measuring device 100. The body 300 is mounted on the bracket 200, and two discharge ends 400 are arranged adjacently on the bracket 200. The two discharge ends 400 are electrically connected to the body 300. The discharge gap measuring device 100 is mounted on the bracket 200, with the transmitting end 101 facing one discharge end 400 and the receiving end 102 facing the other discharge end 400.

[0061] Specifically, in this embodiment, the bracket 200 is installed on the building foundation, the body 300 is installed on the bracket 200, and the body 300 is connected to the cable to convert the voltage of the input circuit into the voltage required by the output circuit. Two discharge terminals 400 are arranged adjacently on the bracket 200 and located at the neutral point of the transformer. The discharge terminals 400 are electrically connected to the body 300. The two discharge terminals 400 are arranged opposite each other and a certain distance is left between them, which is the discharge gap. The mounting bracket 7 is installed on the bracket 200 and located near the discharge terminals 400. The transmitting end 101 of the discharge gap measuring device 100 faces one discharge terminal 400, and the receiving end 102 faces the other discharge terminal 400.

[0062] In this embodiment, when installing the discharge gap ranging device 100, the housing 4 is securely mounted on the bracket 200. Through precise adjustment, it is ensured that the transmitting end 101 and the receiving end 102 of the ranging component are accurately aligned with the endpoints of the two discharge ends 400. At the same time, the discharge gap ranging device 100 maintains a safe distance from other components of the transformer. After installation, a protective cover is placed on the housing 4 to ensure good insulation performance.

[0063] The working process of the discharge gap ranging device 100 in this utility model is as follows: The ranging module 1 emits a laser beam at a set high frequency (e.g., 10 times per second). After the laser beam hits the discharge terminal 400, it is reflected back. The ranging module 1 accurately calculates the distance between the two discharge terminals 400 based on the flight time of the laser and transmits the distance data to the signal conditioning circuit of the control module 2 in the form of an electrical signal.

[0064] The signal conditioning circuit filters the weak electrical signal from the ranging module 1, removing high-frequency noise and low-frequency interference signals, and then amplifies the signal to a level suitable for microprocessor processing. The microprocessor receives the conditioned signal, calculates the actual distance value of the discharge gap according to a preset algorithm, and stores this value in the storage unit. Simultaneously, the microprocessor compares the current distance value with a preset safety threshold in the storage unit.

[0065] The microprocessor transmits the calculated real-time distance value and the historical distance data read from the storage unit to the display module 3. The display module 3 displays the real-time distance value digitally in a prominent position on the screen, while simultaneously plotting the historical distance trend as a curve in another area of ​​the screen. Operators can view detailed data information for different time periods via the touchscreen display.

[0066] If the microprocessor determines that the current discharge gap distance exceeds the safe threshold range, it immediately sends an alarm command to the alarm module 5. Upon receiving the command, the alarm 501 emits a strong audible and visual warning signal. Simultaneously, the communication module 502 sends an alarm message containing information such as the abnormal distance value and time to the maintenance personnel's mobile terminal. After receiving the alarm information, the maintenance personnel can promptly go to the site to inspect and maintain the transformer neutral point discharge gap.

[0067] Under normal circumstances, the power converter 602 can convert the mains power into the DC voltage required by each module of the device to power the entire device. When the mains power fails or the power supply fails, the battery 601 automatically switches to power supply mode to ensure that the device can continue to work normally for a period of time, ensuring continuous data acquisition, processing and display until the mains power is restored or the staff takes appropriate measures.

[0068] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A discharge gap ranging device, characterized in that, include: The ranging module (1) is provided with a transmitter (101) and a receiver (102). The transmitter (101) is adapted to emit a ranging signal, and the receiver (102) is adapted to receive a ranging signal. The transmitter (101) and the receiver (102) face the two discharge terminals (400) on the neutral point of the transformer. Control module (2), which is signal-connected to the ranging module (1); The display module (3) is signal-connected to the control module (2); The housing (4) has an internal cavity and an installation port. The ranging module (1) and the control module (2) are installed inside the housing (4), and the display module (3) is installed on the installation port.

2. The discharge gap ranging device according to claim 1, characterized in that, Also includes: An alarm module (5) is installed on the housing (4) and is signal-connected to the control module (2).

3. The discharge gap ranging device according to claim 1 or 2, characterized in that, The outer casing (4) is covered with a protective sleeve.

4. The discharge gap ranging device according to claim 1 or 2, characterized in that, The mounting port is provided with a protective plate, which is located above the display module (3).

5. The discharge gap ranging device according to claim 1 or 2, characterized in that, Also includes: The power management module (6) is disposed inside the housing (4) and is electrically connected to the ranging module (1), the display module (3) and the control module (2).

6. The discharge gap ranging device according to claim 5, characterized in that, The power management module (6) includes: A battery (601) is disposed inside the housing (4) and is electrically connected to the ranging module (1), the display module (3) and the control module (2); A power converter (602) is electrically connected to the battery (601).

7. The discharge gap ranging device according to claim 2, characterized in that, The alarm module (5) includes: An alarm (501) is mounted on the housing (4); A communication module (502) is installed inside the housing (4) and is signal-connected to the control module (2) and the alarm (501).

8. The discharge gap ranging device according to claim 1 or 2, characterized in that, The housing (4) is provided with a data interface, which is connected to the control module (2) and is adapted to be connected to external devices.

9. The discharge gap ranging device according to claim 1 or 2, characterized in that, Also includes: Mounting bracket (7), on which the housing (4) is mounted.

10. A transformer, characterized in that, include: Bracket (200); The body (300) is mounted on the bracket (200); Discharge terminals (400), two discharge terminals (400) are arranged adjacently on the bracket (200), and the two discharge terminals (400) are electrically connected to the body (300); The discharge gap measuring device (100) according to any one of claims 1 to 9 is mounted on the bracket (200), the transmitting end (101) faces one of the discharge ends (400), and the receiving end (102) faces the other discharge end (400).

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