Insulator pollution flashover optical fiber monitoring device

Abstract

The embodiment of the utility model provides an insulator pollution flashover optical fiber monitoring device, and the device comprises a supporting frame which is used for providing fixation and is disposed on an insulator; the protective cover is wrapped outside the supporting frame and is provided with a light-transmitting part through which light signals can transmit; the optical fiber sensor is installed on the supporting frame, located in the protective cover and used for monitoring the pollution flashover state of the insulator in real time and transmitting optical signals through the light transmitting part; the self-cleaning mechanism is arranged on the inner side of the protective cover and is in close contact with the optical fiber sensor; and the sealing ring is arranged at the combined part of the upper shell and the lower shell. Through the scheme of the embodiment of the invention, the problem that the data acquisition accuracy is reduced due to the fact that the sensor part of the monitoring device is directly exposed, long-time operation and external pollution possibly cause smudginess or corrosion of optical components can be solved.

Description

Technical Field

[0001] The present application relates to the field of power system automation and optical fiber communication technology, and in particular to an insulator pollution flashover optical fiber monitoring device. Background Art

[0002] The insulator flashover fiber optic monitoring device is used to detect flashover on the surface of insulators in power systems. By monitoring optical changes on the insulator surface in real time, it can promptly identify potential flashover risks, thereby ensuring the safe and stable operation of the power grid. However, since the sensor portion of this device is directly exposed to the external environment, it is susceptible to dust, contaminants, and other factors over long periods of operation. This can cause optical components to become contaminated or even corroded, reducing data acquisition accuracy and compromising monitoring effectiveness. Summary of the Invention

[0003] In view of this, an embodiment of the present disclosure provides an insulator pollution flashover optical fiber monitoring device, which at least partially solves the problems existing in the prior art.

[0004] The present application provides an insulator pollution flashover optical fiber monitoring device, comprising:

[0005] Support frame, used to provide fixation and installation on insulator;

[0006] A protective cover wrapped around the outside of the support frame and having a light-transmitting portion capable of transmitting light signals, the protective cover being composed of an upper shell and a lower shell, with a gap with a microporous membrane reserved between the two;

[0007] An optical fiber sensor is mounted on the support frame and located inside the protective cover, and is used to monitor the flashover status of the insulator in real time and transmit an optical signal through the light-transmitting portion;

[0008] A self-cleaning mechanism is provided inside the protective cover and in close contact with the optical fiber sensor. The self-cleaning mechanism is specifically composed of an electric push rod, a drive rod, and a scraper. The electric push rod is activated at a fixed time to drive the scraper to move back and forth along the surface of the optical fiber sensor to remove attachments; and

[0009] The sealing ring is installed at the joint between the upper shell and the lower shell.

[0010] Preferably, the support frame is provided with reinforcing ribs inside, and the reinforcing ribs are triangular.

[0011] Preferably, the microporous membrane is coated with a hydrophobic material layer.

[0012] Preferably, the light-transmitting portion is coated with a coating having a self-repairing function.

[0013] Preferably, an elastic gasket (10) is provided on the contact surface between the optical fiber sensor and the support frame.

[0014] Preferably, it also includes a humidity sensor, which starts an internal fan when it detects that the humidity in the protective cover exceeds a threshold value. The internal fan is set in a position near the bottom of the protective cover.

[0015] Preferably, a filter is provided between the fan and the microporous membrane in the protective cover, for capturing dust.

[0016] Preferably, the area where the self-cleaning mechanism contacts the optical fiber sensor is coated with an anti-corrosion layer.

[0017] Preferably, a protruding structure is provided at the joints between the sealing ring and the upper shell and the lower shell.

[0018] Preferably, the device further comprises a guide plate located above the protective cover.

[0019] The embodiment of the present disclosure provides an insulator pollution flashover optical fiber monitoring device, comprising: a support frame for fixing and installing on the insulator; a protective cover wrapped around the outside of the support frame and having a light-transmitting portion capable of transmitting optical signals, the protective cover consisting of an upper shell and a lower shell, and a gap with a microporous membrane reserved between the two; an optical fiber sensor installed on the support frame and located inside the protective cover, for real-time monitoring of the pollution flashover status of the insulator and transmitting optical signals through the light-transmitting portion; a self-cleaning mechanism, arranged on the inside of the protective cover and in close contact with the optical fiber sensor, the self-cleaning mechanism specifically consisting of an electric push rod, a drive rod and a scraper, which is driven by the timed activation of the electric push rod to move the scraper back and forth along the surface of the optical fiber sensor to remove attachments; and a sealing ring installed at the junction of the upper shell and the lower shell. The solution of the embodiment of the present disclosure can solve the problem that the sensor part of the monitoring device is directly exposed to the outside, and long-term operation and external pollution may cause the optical components to become dirty or corroded, resulting in a decrease in data acquisition accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0021] Figure 1 A cross-sectional view of the insulator flashover optical fiber monitoring device of the present application;

[0022] Figure 2 This is a right side view of the insulator flashover optical fiber monitoring device of the present application;

[0023] Figure 3This is a structural diagram of the insulator pollution flashover optical fiber monitoring device of this application.

[0024] Figure: 1. Support frame; 2. Protective cover; 3. Fiber optic sensor; 4. Self-cleaning mechanism; 5. Sealing ring; 6. Reinforcement rib; 7. Upper shell; 8. Lower shell; 9. Coating; 10. Elastic gasket; 11. Electric push rod; 12. Drive rod; 13. Scraper; 14. Humidity sensor; 15. Internal fan; 16. Filter; 17. Guide plate; 18. Raised structure DETAILED DESCRIPTION

[0025] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0026] like Figure 1 As shown, the insulator pollution flashover optical fiber monitoring device of the present application includes a support frame 1, a protective cover 2, an optical fiber sensor 3, a self-cleaning mechanism 4 and a sealing ring 5.

[0027] The support frame 1 forms the basic structure of the entire device, securing the positions of various components and ensuring stability during operation. It can be precisely machined from high-strength aluminum alloy to provide sufficient mechanical strength and stability. The support frame 1 is designed with a standard interface suitable for insulator installation, allowing for easy installation.

[0028] Protective cover 2 wraps around the support frame 1, protecting the internal components and preventing dust and other contaminants from entering and directly affecting the operation of the fiber optic sensor 3. Protective cover 2 is made of a highly transparent material, allowing light signals to pass freely without interference or attenuation. In actual manufacturing, protective cover 2 can be made of transparent polycarbonate through injection molding, which provides excellent light transmittance and weather resistance.

[0029] Fiber optic sensor 3 is located at a specific location on support frame 1. Its function is to accurately monitor the specific conditions of insulator flashover, while remaining unaffected by external environmental factors. It then promptly converts this information into a recognizable optical signal for transmission. Fiber optic sensor 3 typically consists of a light transmitter, receiver, and sensing element. Embedded in the corresponding area of ​​support frame 1 using microelectronic packaging technology, this ensures stable functionality and ease of maintenance for the entire system.

[0030] A self-cleaning mechanism 4, located within protective cover 2 and adjacent to fiber optic sensor 3, senses dirt from outside or near the sensor and automatically initiates a cleaning process to remove the covering, maintaining a clear and sensitive sensor surface. To meet practical requirements, this mechanism incorporates a microactuator and a specially designed soft-bristled brush. Upon detecting a sufficient level of dust accumulation, the brush activates and gently scrubs along a preprogrammed trajectory until the surface regains its lustre.

[0031] To further enhance the device's sealing and durability, a sealing ring 5 is positioned at the junction of the upper and lower housings 7 and 8, described later. This configuration not only improves the seal between the assembled components but also effectively prevents liquids and even fine particles from leaking in and damaging optical components or other precision equipment. Preferably, the sealing ring 5 is made of silicone rubber, which exhibits excellent elasticity and rapid return. Through a mold-curing process, a high-precision fit is achieved while still maintaining sufficient clearance, facilitating assembly and commissioning while ensuring reliable protection.

[0032] In one embodiment, the insulator flashover optical fiber monitoring device of the present application effectively enhances the structural stability of the entire device by designing reinforcing ribs 6 inside the support frame 1. This design can not only resist external forces caused by wind loads, rain and snow in the natural environment, but also prevent structural fatigue and deformation under long-term operation, ensuring that the support frame 1 is in a stable state for a long time. In addition, since the optical fiber monitoring equipment and other components are installed on the support frame 1, enhancing its structural strength and stability helps to improve the reliability and measurement accuracy of the entire system. In actual field applications, especially for insulators installed on high-voltage transmission towers or poles, stable operation under adverse weather conditions is crucial to ensuring the safety of the power system.

[0033] In one embodiment, the reinforcement ribs 6 can be implemented using a triangular or other geometric layout, ensuring structural stability while also taking into account efficient material utilization. For example, the number and location of the reinforcement ribs 6 can be rationally configured based on specific stress analysis to optimize structural performance and reduce the overall weight of the device. Furthermore, to improve the welding quality and corrosion resistance of the reinforcement ribs 6, a high-strength, corrosion-resistant alloy can be selected as the material, and appropriate anti-corrosion measures can be implemented on the welds to further extend their service life.

[0034] refer to Figure 2In one embodiment, the protective cover 2 of the insulator flashover optical fiber monitoring device of the present application consists of two parts: an upper shell 7 and a lower shell 8. These two parts are connected by screws, which not only ensures the robustness and reliability of the entire structure, but also provides a small gap to effectively promote air flow, thereby achieving the purpose of stabilizing the temperature and humidity inside the monitoring device and reducing the impact of temperature and humidity changes caused by external environmental factors on the device's monitoring accuracy.

[0035] Specifically, by designing a small gap of appropriate size at the junction of the upper shell 7 and the lower shell 8, the device can prevent external impurities such as moisture from directly entering the device and affecting its operation, while also utilizing the small gap to promote the free exchange of air between the inside and outside of the device. To achieve this gap, impurities such as moisture from directly entering the device and affecting its operation, while also allowing for the free exchange of air between the inside and outside of the device, this design typically incorporates a layer of microporous membrane or fine mesh at the gap. The pores are small enough to prevent the entry of moisture and large impurities, but large enough to allow gas molecules to pass through. This allows gas to flow freely in and out through these tiny gaps, while liquids and larger impurities are effectively blocked. Furthermore, a layer of hydrophobic material can be coated on the microporous membrane to reduce moisture adhesion and penetration. Furthermore, the screw fixing method not only facilitates installation, disassembly, and maintenance of the various components of the protective cover 2, but also provides a physical basis for automatic temperature and humidity regulation during actual use. Such a sophisticated design not only maintains the overall closed nature of the monitoring system, but also implements an effective natural convection heat transfer mechanism.

[0036] For example, when implementing this double-layer protective structure with a gap designed to adapt to environmental changes, the upper and lower shells 8 can be made of metal or plastic materials with a certain degree of elasticity and corrosion resistance. During installation, it is necessary to ensure that the two halves are tightly connected and the gap width is uniform to ensure adequate air circulation, without being too large or too small. This ensures that the device can maintain stable and accurate operating performance levels regardless of sudden changes in temperature and humidity or in adverse weather conditions.

[0037] In one embodiment, the insulator flashover optical fiber monitoring device of the present application further optimizes the design of the light-transmitting part while ensuring the accuracy and stability of monitoring. By coating a specially designed self-repairing coating 9 on the surface of the light-transmitting part, the reliability and durability of the light-transmitting material in harsh environments are enhanced. The coating 9 can automatically restore transparency when it is slightly damaged or slightly contaminated, effectively preventing the attenuation of optical signals and abnormal refraction changes caused by external conditions, and ensuring the normal operation of the entire system and the accuracy of data transmission. This design greatly improves the anti-interference ability and maintenance convenience of insulator detection, and has significant advantages in the long-term outdoor use environment of power facilities.

[0038] To achieve this self-healing function, the coating 9 is typically constructed from polymer systems containing dynamic chemical bonds or microencapsulation agents. For example, polymers based on reversible covalent exchange reactions or thermotropic liquid crystal elastomers can rapidly self-seal cracks after physical damage to the coating 9. Under suitable temperature and humidity conditions, contaminants and residual impurities can be gradually removed, ultimately restoring the coating to its original smooth, transparent state. This approach is not only simple, effective, and cost-effective, but also suitable for long-term stable operation in a variety of complex operating environments.

[0039] In one embodiment, in order to ensure that the insulator flashover optical fiber monitoring device of the present application can still operate stably in a complex environment, a circle of elastic gaskets 10 with a shockproof function is provided on the contact surface between the optical fiber sensor 3 and the support frame 1. The elastic gasket 10 can effectively absorb vibration energy under the action of external mechanical impact, and when subjected to different degrees of vibration and external force, it can effectively reduce the impact on the optical fiber sensor 3, thereby ensuring the working reliability and data acquisition accuracy of the optical fiber sensor 3. Furthermore, the elastic gasket 10 is made of a material with a certain elasticity, which can maintain elasticity and weather resistance for a long time, thereby adapting to different working conditions. Through such a design, it is ensured that in actual application, when encountering unexpected impact or vibration, the optical fiber sensor 3 can still operate normally and will not be damaged or fail due to external mechanical disturbances.

[0040] In one embodiment, the design of the elastic gasket 10 can be implemented by using silicone rubber, foam material, or other materials with good elasticity and shock absorption effects as the gasket material. Specifically, the gasket can be cut into a corresponding shape and thickness according to the specific size of the support frame 1 so that it fits tightly between the optical fiber sensor 3 and the support frame 1. During the assembly process, it is necessary to ensure that the gasket is in the correct position and fixed so that it can provide the expected protective effect when it is impacted. This design is not only simple in structure and easy to implement, but also greatly improves the stability of the entire device.

[0041] In one embodiment, continue to refer to Figure 1In the insulator flashover optical fiber monitoring device of the present application, the self-cleaning mechanism 4 specifically includes an electric push rod 11, a drive rod 12 and a scraper 13. The purpose of designing the self-cleaning mechanism 4 is to ensure that the optical fiber sensor 3 is always kept in the best working state by periodically cleaning it. Specifically, in the actual application process, by setting appropriate control programs and time parameters, the electric push rod 11 can be made to move according to a predetermined cycle, pushing the drive rod 12 to drive the scraper 13 to move back and forth along the surface of the optical fiber sensor 3. The effect of this is that the dust and other impurities accumulated on the surface of the optical fiber sensor 3 can be effectively removed, thereby preventing the signal from being weakened or the transmission being poor due to pollutants, and further ensuring the accuracy of the monitoring data. In addition, such a design can also reduce the maintenance frequency, improve the overall reliability of the system and the stability of long-term work.

[0042] In one embodiment, still referring to Figure 2 The insulator flashover optical fiber monitoring device of the present application further integrates a humidity sensor 14, so that the device can comprehensively monitor the environmental conditions inside the protective cover 2. Once the humidity reaches the preset threshold, the system will automatically start the internal fan 15 inside the protective cover 2. The internal fan 15 is arranged near the bottom of the protective cover 2, and microholes can be provided at the bottom of the protective cover 2 to facilitate the entry and exit of gas. This mechanism can timely and effectively introduce external dry gas into the interior of the device, thereby quickly reducing the humidity inside the protective cover 2 and preventing the occurrence of condensation on optical components due to excessive humidity. In this way, not only is the problem of decreased light transmittance caused by the accumulation of moisture on the surface of the optical device avoided, but also the stability of the overall device performance and the accuracy of data monitoring are guaranteed. In one embodiment, this functional design can be implemented by combining a humidity sensor with a microcontroller. Upon receiving a signal from humidity sensor 14 that exceeds a set threshold, the microcontroller immediately responds and outputs a control instruction to the driver module, activating the internal fan 15, a cooling and ventilation mechanism within protective cover 2. The introduction of external dry air may require the provision of an appropriate air duct structure and ventilation device to ensure efficient exchange of internal and external dry air, maintaining ideal operating conditions. Specifically, air can enter and exit through the microporous membrane described above.

[0043] In one embodiment, the insulator flashover optical fiber monitoring device of the present application further improves the reliability and stability of the optical fiber sensor 3 by disposing a filter 16 near the bottom of the protective cover 2. Specifically, the filter 16 is disposed between the fan 15 and the microporous membrane within the protective cover 2. This design effectively removes dust and other particles from the device that directly contact the optical fiber sensor 3. This not only enhances the overall protection capability of the device, but also significantly reduces the probability of contamination of the optical fiber sensor 3, thereby extending the device's operating life and monitoring accuracy. Furthermore, the filter 16 can also be configured to remove moisture.

[0044] In one embodiment, the insulator flashover optical fiber monitoring device of the present application ensures the long-term effectiveness of the device by coating an anti-corrosion layer in the area where the self-cleaning mechanism 4 contacts the optical fiber sensor 3. This coating design ensures that even in a humid or foggy environment, the area can still resist any form of oxidation or corrosion reaction. This feature can effectively ensure the stability and reliability between the self-cleaning mechanism 4 and the sensing element, and significantly reduce the risk of functional failure or performance degradation due to environmental factors. At the same time, this layer of protection can also keep the contact surface smooth for a long time, further improving the quality of signal transmission. The anti-corrosion layer must be made of a material that is highly durable and does not affect the sensitivity of the optical fiber, so as to maintain a good monitoring effect.

[0045] For example, a layer of fluoride polymer material with a thickness ranging from several microns to tens of microns can be applied to the surface of the metal self-cleaning structure by spraying, dipping, or electroplating. For example, polytetrafluoroethylene (PTFE) is selected as the coating 9. Due to its excellent moisture and rust resistance, it not only effectively prevents metal corrosion caused by direct contact with moisture in the air, but also can withstand temperature changes within a certain range without losing its physical properties, ensuring its performance in various complex environments.

[0046] In one embodiment, the insulator pollution flashover optical fiber monitoring device of the present application utilizes a specially designed sealing ring 5, which is installed at the junction of the upper shell 7 and the lower shell 8. To enhance sealing performance, a series of protrusions 18 are provided at the junction of the sealing ring 5 with the upper shell 7 and the lower shell 8. When these protrusions are in close contact with the upper shell 7 and the lower shell 8, they form multiple sealing layers, greatly improving the sealing and stability of the entire device.

[0047] In one embodiment, Figure 3As shown, the insulator flashover optical fiber monitoring device of the present application includes a perforated deflector plate 17 located above the protective cover 2. This deflector plate 17 is designed to optimize the flow rate and direction of water on the protective cover 2 in rainy and snowy environments, ensuring that water flows smoothly without accumulation. This design helps prevent accumulated water from flowing down the protective cover 2 and accidentally dripping onto important components within the monitoring device.

[0048] Specifically, in practical applications, the deflector plate 17 can be made of a thin material with a certain slope. For example, a lightweight, weather-resistant aluminum alloy can be used. When placed on the device housing, the plate should be positioned at a certain angle to facilitate the natural drainage of water by gravity, ensuring that excessive liquid does not seep into or remain in the surrounding area of ​​the device.

[0049] In actual operation, when using this device, the support frame 1 is first securely fixed near the insulator to be monitored to ensure the device maintains a stable position throughout operation. At this point, the protective cover 2 tightly encases the support frame 1, preventing external contaminants such as dust and moisture from directly contacting the delicate components within. Its special light-transmitting portion also allows for unimpeded transmission of optical signals. Next, during the monitoring process, if conditions on the insulator surface potentially causing flashover occur, the fiber optic sensor 3 mounted within the protective cover 2 immediately responds and captures these changes in real time. The generated monitoring signal is transmitted through the light-transmitting portion of the protective cover 2. To prevent the accumulation of dust and other debris from long-term exposure to the outdoor environment, which could adversely affect detection accuracy, and to maintain reliable device performance, the designers integrated a self-cleaning mechanism 4 within the protective cover 2. This mechanism automatically activates if the sensing system detects potential contaminant accumulation, effectively cleaning the adjacent fiber optic sensor 3 at regular intervals, thereby ensuring that the sensing elements maintain optimal working condition and detection accuracy. Finally, it is worth noting that the seal between the devices has been enhanced, with dedicated sealing rings installed at the seams of the protective cover 2. This design effectively isolates harmful external factors while also protecting internal components, such as optical components, from damage by moisture and foreign matter, thereby ensuring the normal operation and efficient monitoring of the entire system. The organic integration and synergy of these components enable precise sensing and management of insulator flashover conditions.

[0050] In the description of this specification, the reference terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0052] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An insulator flashover optical fiber monitoring device, characterized in that: include: A support frame (1) is used for fixing and installing on the insulator; A protective cover (2) is wrapped around the outside of the support frame (1) and has a light-transmitting portion capable of transmitting light signals. The protective cover (2) is composed of an upper shell (7) and a lower shell (8), and a gap with a microporous membrane is reserved between the two. An optical fiber sensor (3), mounted on the support frame (1) and located inside the protective cover (2), is used for real-time monitoring of the flashover state of the insulator and transmitting an optical signal through the light-transmitting portion; a self-cleaning mechanism (4) disposed inside the protective cover (2) and in close contact with the optical fiber sensor (3); the self-cleaning mechanism (4) specifically comprises an electric push rod (11), a driving rod (12), and a scraper (13); the electric push rod (11) is activated at a fixed time to drive the scraper (13) to move back and forth along the surface of the optical fiber sensor (3) to remove attachments; and The sealing ring (5) is installed at the joint of the upper shell (7) and the lower shell (8).

2. The insulator pollution flashover optical fiber monitoring device according to claim 1, characterized in that: A reinforcing rib (6) is provided inside the support frame (1), and the reinforcing rib (6) is triangular.

3. The insulator pollution flashover optical fiber monitoring device according to claim 1, characterized in that: The microporous membrane is coated with a hydrophobic material layer.

4. The insulator pollution flashover optical fiber monitoring device according to claim 1, characterized in that: The light-transmitting portion adopts a coating (9) with a self-repairing function.

5. The insulator flashover optical fiber monitoring device according to claim 1, characterized in that: An elastic gasket (10) is provided on the contact surface between the optical fiber sensor (3) and the support frame (1).

6. The insulator pollution flashover optical fiber monitoring device according to claim 1, characterized in that: The device also includes a humidity sensor (14) which starts an internal fan (15) when detecting that the humidity in the protective cover (2) exceeds a threshold value. The internal fan (15) is arranged near the bottom of the protective cover (2).

7. The insulator pollution flashover optical fiber monitoring device according to claim 6, characterized in that: A filter (16) is provided between the fan (15) and the microporous membrane in the protective cover (2) for capturing dust.

8. The insulator pollution flashover optical fiber monitoring device according to claim 1, characterized in that: The area where the self-cleaning mechanism (4) contacts the optical fiber sensor (3) is coated with an anti-corrosion layer.

9. The insulator pollution flashover optical fiber monitoring device according to claim 1, characterized in that: A protruding structure (18) is provided at the joint portion between the sealing ring (5) and the upper shell (7) and the lower shell (8).

10. The insulator pollution flashover optical fiber monitoring device according to claim 1, characterized in that: The device also includes a guide plate (17) located above the protective cover (2).

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