A structure of a moisture-proof transformer partial discharge on-line monitoring IED

Abstract

This invention provides a structure for a moisture-proof online partial discharge monitoring IED for transformers, belonging to the field of transformer partial discharge monitoring technology. It includes a monitor body and multiple rectangular openings on its end walls. Symmetrically distributed guide rods are provided at both ends of the monitor body's inner cavity. A sealing plate is slidably connected between two guide rods at the same end. Each sealing plate has multiple through openings, which are respectively configured to cooperate with adjacent rectangular openings on the same side. Several rain sensors are installed on the monitor body. The rectangular openings are all inclined downwards from the inside out. A driving component for raising and lowering the sealing plate is provided on the monitor body. A dehumidifying component is provided inside the monitor body for dehumidifying its interior. This invention ensures the sealing reliability of the equipment under extreme weather conditions through rapid physical sealing triggered by rain sensors. It also utilizes passive heat dissipation via heat exchange plates and cooling fins, allowing for heat dissipation even in a sealed state.

Description

Technical Field

[0001] This invention belongs to the field of transformer partial discharge monitoring technology, specifically relating to the structure of a moisture-proof transformer partial discharge online monitoring IED. Background Technology

[0002] Transformers are the core power transmission and conversion equipment in power systems. The stability of their operation directly determines the safe and reliable operation of the power system. Partial discharge is an important indicator of internal insulation deterioration and latent faults in transformers. Therefore, online monitoring of transformer partial discharge is a key aspect of power system operation and maintenance. By monitoring, collecting, and analyzing transformer partial discharge signals in real time, internal insulation defects can be detected in a timely manner, early warnings of fault risks can be given, power outages caused by sudden transformer failures can be avoided, and the stable power supply of the power system can be guaranteed. Online monitoring technology for transformer partial discharge has become an indispensable and important technical means in the field of power operation and maintenance. The existing structure of moisture-proof transformer partial discharge online monitoring IEDs relies on a fixed sealing structure for its sealing performance. This makes it impossible to achieve rapid physical sealing in extreme weather conditions (such as heavy rain or torrential downpours). Under extreme rainfall, the seal is prone to failure, allowing rainwater to seep into the equipment, damaging internal electronic components and affecting the normal operation of the monitoring IED. At the same time, the existing structure lacks an effective passive heat dissipation structure when sealed. Heat cannot be dissipated in time after sealing, which can easily lead to heat accumulation, resulting in excessively high operating temperature, reduced equipment stability, and consequently affecting the accuracy and continuity of partial discharge monitoring. This makes the monitoring IEDs used outdoors less adaptable to different environments and unable to meet the requirements for long-term stable operation. Summary of the Invention

[0003] In view of this, the present invention provides a structure for a moisture-proof transformer partial discharge online monitoring IED, which can be rapidly physically sealed by a rain sensor to ensure the sealing reliability of the device under extreme weather conditions. It can also utilize the passive heat dissipation of heat exchange plates and heat dissipation fins to dissipate heat even in a sealed state, significantly improving the environmental adaptability and long-term operational stability of outdoor IED devices.

[0004] To address the aforementioned technical problems, this invention provides a structure for a moisture-proof transformer partial discharge online monitoring IED, comprising a monitor body and multiple rectangular openings on its end walls. Symmetrically distributed guide rods are provided at both ends of the monitor body's inner cavity. A sealing plate is slidably connected between two guide rods at the same end. Each sealing plate has multiple through openings, which are respectively configured to cooperate with adjacent rectangular openings on the same side. Several rain sensors are provided on the monitor body. The rectangular openings are all inclined downwards from the inside out. A driving component is provided on the monitor body to drive the sealing plate up and down. A dehumidifying component is provided inside the monitor body to dehumidify its interior. This rapid physical sealing triggered by the rain sensors ensures the sealing reliability of the device under extreme weather conditions. Passive heat dissipation via heat exchange plates and cooling fins allows for heat dissipation even in a sealed state, significantly improving the environmental adaptability and long-term operational stability of the outdoor IED device.

[0005] The cross-section of the through opening is flared, and its narrow end is set outward. That is, the cooperation between the lead screw and the threaded hole realizes precise linear drive and ensures accurate control of the displacement of the sealing plate.

[0006] The drive unit is configured to: drive the sealing plate and its through opening to move upward and / or downward when starting, and form a self-locking mechanism to limit the movement of the sealing plate and its through opening when stopping. That is, the motor directly drives the lead screw to provide stable power output, realize rapid response to changes in rainfall and timely adjustment of the sealing plate position.

[0007] The drive unit includes a lead screw rotatably connected to the monitor body near each sealing plate, and the lead screw is threadedly connected to a threaded hole provided on the adjacent sealing plate on the same side.

[0008] The drive unit also includes a motor located on the monitor body near each lead screw. The output shaft of the motor is fixedly connected to the end of the adjacent lead screw on the same side, thus providing a drive source for the lead screw.

[0009] The dehumidification component includes mounting plates symmetrically arranged at both ends of the monitor's internal cavity. Each mounting plate is equipped with several fans and several temperature and humidity sensors. The fans force air circulation to accelerate the removal of moisture, while the temperature and humidity sensors provide real-time feedback of environmental data, enabling dynamic dehumidification control.

[0010] The dehumidification unit also includes multiple heaters installed on the upper and lower walls of the monitor's internal cavity. These heaters reduce the relative humidity of the air by raising the temperature, inhibiting condensation and ensuring a dry internal environment.

[0011] It also includes heat exchange components, which include multiple heat exchange plates respectively disposed on the upper and lower walls of the inner cavity of the monitor body. The heaters and heat exchange plates in the same horizontal plane are distributed at intervals, that is, the heat exchange plates are in contact with the heat-generating components inside the monitor body, thereby ensuring the heat dissipation effect when the monitor body is sealed.

[0012] The heat exchanger also includes multiple heat dissipation fins respectively set on the outside of the heat exchange plate. The multiple heat dissipation fins pass through the wall of the monitor body and extend to the outside. That is, the heat dissipation fins expand the heat dissipation area and quickly release the heat of the humid air to the outside, preventing the internal temperature from being too high.

[0013] Each rectangular opening on the monitor is equipped with a shield, forming a physical barrier to prevent rainwater from directly impacting the opening and further reducing the risk of external moisture intrusion.

[0014] The beneficial effects of the above-described technical solution of the present invention are as follows: 1. The monitor body dissipates heat and dehumidifies through rectangular openings at both ends. When the rain sensor detects rainfall, the motor starts, and its output shaft rotates to drive the lead screw. When the lead screw rotates, it immediately drives the sealing plates on the guide rods at both ends to slide along the guide rods, causing the trumpet-shaped through-hole on the sealing plate to misalign with the rectangular opening. This allows the sealing plate to block the rectangular opening, forming a physical sealing barrier. After the sealing plate moves into place, the self-locking mechanism of the lead screw and the screw hole fixes its position, preventing rainwater and a large amount of humid air from entering the body through the inclined rectangular opening. When it is not raining, the motor starts, and its output shaft rotates to drive the lead screw to reverse. When the lead screw rotates, it immediately drives the sealing plates on the guide rods at both ends to reset, so that the trumpet-shaped through-hole on the sealing plate corresponds one-to-one with the rectangular opening, ensuring the heat dissipation effect. The rapid physical sealing triggered by the rain sensor ensures the sealing reliability of the equipment under extreme weather conditions. It can utilize the passive heat dissipation of the heat exchange plate and heat sink fins, allowing it to dissipate heat even in a sealed state, significantly improving the environmental adaptability and long-term operational stability of the outdoor IED equipment.

[0015] 2. When it is not raining, the temperature and humidity sensors in the dehumidifier continuously monitor the internal environment. When the humidity exceeds the standard, the fans on the mounting plates at both ends start to form airflow circulation, which, together with the heater, raises the temperature and reduces the relative humidity. When the temperature exceeds the standard, only the fans start to form airflow circulation, accelerating the heat dissipation effect.

[0016] 3. The heat exchange plate and the externally extended heat dissipation fins in the heat exchange components quickly dissipate heat from inside the machine through heat exchange, achieving a synergistic effect of moisture prevention and heat dissipation. The shield further blocks external moisture penetration in a sealed state, forming a multi-level protection system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of a moisture-proof transformer partial discharge online monitoring IED according to the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the planar structure of the present invention; Figure 4 This is an enlarged structural diagram of point A in the present invention; Figure 5 This is an enlarged structural diagram of point B in the present invention.

[0018] Explanation of reference numerals in the attached drawings: 100, monitor body; 200, rectangular opening; 201, guide rod; 202, sealing plate; 203, through opening; 204, rain sensor; 300, lead screw; 301, motor; 400, mounting plate; 401, fan; 402, temperature and humidity sensor; 500, heat exchange plate; 501, heat dissipation fin; 600, shield. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figure 1-5 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0020] This embodiment provides a structure for a moisture-proof transformer partial discharge online monitoring IED, such as... Figure 1-5 As shown: The device includes a monitor body 100 and multiple rectangular openings 200 on its two end walls. Symmetrically distributed guide rods 201 are provided at both ends of the inner cavity of the monitor body 100. A sealing plate 202 is slidably connected between two guide rods 201 at the same end. Each sealing plate 202 has multiple through openings 203, which are respectively configured to cooperate with adjacent rectangular openings 200 on the same side. Several rain sensors 204 are provided on the monitor body 100. The rectangular openings 200 are all... The monitor body 100 is inclined downward from the inside out. It is equipped with a drive unit for driving the sealing plate 202 to rise and fall. The monitor body 100 is equipped with a dehumidifying unit for dehumidifying its interior. The cross-section of the through opening 203 is flared, and its narrow end is set outward. The drive unit is configured to drive the sealing plate 202 and its through opening 203 to move upward and / or downward when starting, and to form a self-locking mechanism to restrict the movement of the sealing plate 202 and its through opening 203 when stopping.

[0021] The monitor body 100 can be equipped with a partial discharge online monitor, such as the LE-PDS-ZB, ED8070, or GDPD-PTU-OL models, which are currently available and mature in the market. These online partial discharge monitors all employ existing online partial discharge monitoring technology in the field. Through conventional principles such as UHF detection and pulse current detection, they can achieve real-time acquisition, analysis, and alarm of transformer partial discharge signals. They can accurately identify partial discharge signals generated by typical defects in transformer oil, such as metal particles, floating potential, and internal corona. Their specific operating parameters, signal processing methods, and monitoring methods all comply with existing technical specifications. This solution only improves and optimizes the structure of the monitor body 100, without making any changes to the detection principle, internal circuit structure, or online partial discharge monitoring technology of the monitor itself. Using the aforementioned existing monitor models ensures the stability and accuracy of partial discharge monitoring, aligns with the application scenarios of transformer monitoring in existing power systems, reduces the implementation cost of this solution, and allows for perfect compatibility and stable operation with the improved structure of this solution without requiring additional modifications to the monitor itself.

[0022] The rain gauge 204 can be selected from existing mature commercially available models such as QYYB-01, CG-04-A2, or TW-G1. All of the above rain gauges adopt existing online rain detection technology in this field. They can use conventional detection principles such as tipping bucket sensing, infrared scattering, or optical shielding. They have the characteristics of high measurement accuracy, strong anti-interference ability, and adaptability to complex outdoor environments. Their specific operating parameters, signal output methods, and data processing logic all follow existing technical specifications and can meet the rain monitoring needs in different scenarios. They can be perfectly adapted to the improved structure of this solution and operate stably without any additional modifications to the sensor itself.

[0023] The monitor body 100 dissipates heat and dehumidifies through rectangular openings 200 at both ends. When the rain sensor 204 detects rainfall, the drive immediately drives the sealing plate 202 on the guide rods 201 at both ends to slide along the guide rods, causing the funnel-shaped through opening 203 on the sealing plate 202 to be misaligned with the rectangular opening 200. This allows the sealing plate 202 to block the rectangular opening 200, forming a physical sealing barrier. After the sealing plate 202 moves into place, it is fixed in position by the self-locking mechanism of the lead screw 300 and the lead hole, preventing rainwater and a large amount of humid air from entering the body through the inclined rectangular opening 200. The rapid physical sealing triggered by the rain sensor 204 ensures the sealing reliability of the device under extreme weather conditions, significantly improving the environmental adaptability and long-term operational stability of the outdoor IED device.

[0024] like Figure 1-5As shown, the driving component includes a lead screw 300 rotatably connected to the monitor body 100 near each sealing plate 202. The lead screw 300 is threadedly connected to the threaded holes provided on the adjacent sealing plates 202 on the same side. The driving component also includes a motor 301 provided on the monitor body 100 near each lead screw 300. The output shaft of the motor 301 is fixedly connected to the end of the adjacent lead screw 300 on the same side.

[0025] When the motor 301 starts, its output shaft rotates to drive the lead screw 300 to rotate. When the lead screw 300 rotates, it immediately drives the sealing plates 202 on the guide rods 201 at both ends to slide along the guide rods, thus realizing a stable lifting drive source.

[0026] like Figure 1-5 As shown, the dehumidification component includes mounting plates 400 symmetrically arranged at both ends of the inner cavity of the monitor body 100. Each mounting plate 400 is provided with a number of fans 401 and a number of temperature and humidity sensors 402. The dehumidification component also includes a number of heaters 403 respectively arranged on the upper and lower walls of the inner cavity of the monitor body 100.

[0027] The temperature and humidity sensor 402 can be any of the existing mature commercially available models such as IN95, VERISHD5XVSTH, or SHT30. These sensors all employ existing online temperature and humidity detection technologies in the field, using conventional detection principles such as platinum resistance thermometer (Pt100) and capacitive humidity sensing to collect ambient temperature, relative humidity, and other relevant data in real time. This solution does not make any modifications to the detection principle, internal circuit structure, or temperature and humidity detection technology of the temperature and humidity sensor 402 itself. Using the aforementioned existing models ensures the stability and accuracy of temperature and humidity monitoring, aligning with existing temperature and humidity monitoring applications in meteorology, power, and building automation, reducing the implementation cost of this solution. Furthermore, it allows for perfect compatibility and stable operation with the improved structure of this solution without requiring additional modifications to the sensor itself.

[0028] When it is not raining, the temperature and humidity sensor 402 in the dehumidifier continuously monitors the internal environment. When the humidity exceeds the standard, the fan 401 on the mounting plates 400 at both ends starts to form airflow circulation, which works with the heater 403 to raise the temperature and reduce the relative humidity. When the temperature exceeds the standard, only the fan 401 starts to form airflow circulation, which accelerates the heat dissipation effect.

[0029] like Figure 1-5 As shown, it also includes a heat exchanger, which includes multiple heat exchange plates 500 respectively disposed on the upper and lower walls of the inner cavity of the monitor body 100. The heater 403 and the heat exchange plate 500 in the same horizontal plane are distributed at intervals. The heat exchanger also includes multiple heat dissipation fins 501 respectively disposed on the outside of the heat exchange plate 500. The multiple heat dissipation fins 501 all pass through the wall of the monitor body 100 and extend to the outside.

[0030] The heat exchange plate 500 can be made of copper to ensure heat dissipation. The heat exchange plate 500 and the externally extended heat dissipation fins 501 in the heat exchange component quickly dissipate heat from the inside of the machine through heat exchange, achieving a synergistic effect of moisture protection and heat dissipation, ensuring the sealing reliability of the equipment under extreme weather conditions, and enabling passive heat dissipation through the heat exchange plate 500 and heat dissipation fins 501.

[0031] like Figure 1-5 As shown, a shield 600 is provided on the monitor body 100 near each rectangular opening 200.

[0032] The masking cover 600 can block the rectangular opening 200.

[0033] The working principle of the moisture-proof transformer partial discharge online monitoring IED provided by this invention is as follows: The monitor body 100 dissipates heat and dehumidifies through rectangular openings 200 at both ends. When the rain sensor 204 detects rainfall, the motor 301 starts, and its output shaft rotates to drive the lead screw 300 to rotate. When the lead screw 300 rotates, it immediately drives the sealing plate 202 on the guide rods 201 at both ends to slide along the guide rods, causing the trumpet-shaped through opening 203 on the sealing plate 202 to be misaligned with the rectangular opening 200. This allows the sealing plate 202 to block the rectangular opening 200, forming a physical sealing barrier. After the sealing plate 202 moves into place, it is fixed in position by the self-locking mechanism of the lead screw 300 and the thread hole, preventing rainwater and a large amount of humid air from entering the body through the inclined rectangular opening 200. Meanwhile, the heat exchange plate 500 in the heat exchange component and the externally extended heat dissipation fins 501 quickly dissipate heat from the body through heat exchange, achieving a synergistic effect of moisture prevention and heat dissipation. The shield 600 is sealed in the airtight state. The device effectively blocks external moisture penetration, forming a multi-level protection system. When it is not raining, the motor 301 starts, and its output shaft rotates to drive the lead screw 300 to reverse. When the lead screw 300 rotates, it immediately drives the sealing plates 202 on the guide rods 201 at both ends to reset, so that the horn-shaped through openings 203 on the sealing plates 202 correspond one-to-one with the rectangular openings 200, ensuring heat dissipation. When it is not raining, the temperature and humidity sensors 402 in the dehumidifier continuously monitor the internal environment. When the humidity exceeds the standard, the fans 401 on the mounting plates 400 at both ends start to form airflow circulation, which, together with the heater 403, raises the temperature and reduces the relative humidity. When the temperature exceeds the standard, only the fans 401 start to form airflow circulation, accelerating the heat dissipation effect. The rapid physical sealing triggered by the rain sensor 204 ensures the sealing reliability of the device under extreme weather conditions. It can utilize the passive heat dissipation of the heat exchange plate 500 and the heat dissipation fins 501, so that it can still dissipate heat in a sealed state, significantly improving the environmental adaptability and long-term operational stability of the outdoor IED device.

[0034] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A structure for a moisture-proof transformer partial discharge online monitoring IED, characterized in that: The device includes a monitor body (100) and multiple rectangular openings (200) on its two end walls. The monitor body (100) has symmetrically distributed guide rods (201) at both ends of its inner cavity. A sealing plate (202) is slidably connected between two guide rods (201) at the same end. The sealing plate (202) has multiple through openings (203). The through openings (203) are respectively configured to cooperate with the adjacent rectangular openings (200) on the same side. The monitor body (100) is equipped with several rain sensors (204). The rectangular openings (200) are all inclined downward from the inside to the outside. The monitor body (100) is equipped with a drive component for driving the sealing plate (202) to rise and fall. The monitor body (100) is equipped with a dehumidifying component for dehumidifying its interior.

2. The structure of a moisture-proof transformer partial discharge online monitoring IED as described in claim 1, characterized in that: The cross-section of each through opening (203) is trumpet-shaped, and its narrow end is set outward.

3. The structure of a moisture-proof transformer partial discharge online monitoring IED as described in claim 1, characterized in that: The drive is configured to: drive the sealing plate (202) and its through opening (203) to move upward and / or downward when started, and to form a self-locking mechanism to restrict the movement of the sealing plate (202) and its through opening (203) when stopped.

4. The structure of a moisture-proof transformer partial discharge online monitoring IED as described in claim 1, characterized in that: The drive unit includes a lead screw (300) rotatably connected to the monitor body (100) near each sealing plate (202), and the lead screw (300) is threadedly connected to the threaded hole provided on the adjacent sealing plate (202) on the same side.

5. The structure of a moisture-proof transformer partial discharge online monitoring IED as described in claim 4, characterized in that: The drive unit also includes a motor (301) disposed on the monitor body (100) near each lead screw (300), the output shaft of the motor (301) being fixedly connected to the end of the adjacent lead screw (300) on the same side.

6. The structure of a moisture-proof transformer partial discharge online monitoring IED as described in claim 1, characterized in that: The dehumidification component includes mounting plates (400) symmetrically arranged at both ends of the inner cavity of the monitor body (100). Each mounting plate (400) is provided with a number of fans (401) and a number of temperature and humidity sensors (402).

7. The structure of a moisture-proof transformer partial discharge online monitoring IED as described in claim 6, characterized in that: The dehumidification component also includes multiple heaters (403) respectively disposed on the upper and lower walls of the inner cavity of the monitor body (100).

8. The structure of a moisture-proof transformer partial discharge online monitoring IED as described in claim 7, characterized in that: It also includes heat exchange components, which include multiple heat exchange plates (500) respectively disposed on the upper and lower walls of the inner cavity of the monitor body (100), and the heater (403) and heat exchange plates (500) in the same horizontal plane are distributed at intervals.

9. The structure of a moisture-proof transformer partial discharge online monitoring IED as described in claim 8, characterized in that: The heat exchanger also includes a plurality of heat dissipation fins (501) respectively disposed on the outside of the heat exchange plate (500), and the plurality of heat dissipation fins (501) pass through the wall of the monitor body (100) and extend to the outside.

10. The structure of a moisture-proof transformer partial discharge online monitoring IED as described in claim 1, characterized in that: The monitor body (100) is provided with a shield (600) near each rectangular opening (200).

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