A transformer oil spill handling system

Abstract

The application discloses a transformer oil overflow treatment system, and relates to the technical field of transformers, comprising an oil collecting container, an oil purifying unit and an oil quality monitoring unit; the oil collecting container is provided with an oil inlet and an oil return port, the oil inlet can be communicated with the oil outlet of the pressure release device of one or more transformers through an oil conveying pipeline, and the oil return port is used for being communicated with the oil tank of the transformer through an oil return pipeline; the oil purifying unit is closed communicated with the oil collecting container through an oil circulating pipeline; and the oil quality monitoring unit is arranged on the oil circulating pipeline.The application can reduce the pollution risk of transformer oil overflow to the surrounding environment, avoid high environmental treatment cost caused by pollution, recycle and purify the recovered transformer oil through the oil purifying unit, and directly reuse the recovered transformer oil to the oil tank of the transformer, so that resource waste is avoided.

Description

Technical Field

[0001] This application relates to the field of transformer technology, and more specifically, to a transformer oil spill treatment system. Background Technology

[0002] Under conditions such as sudden short-circuit tests, faults, or hot oil circulation, the internal pressure of an oil-immersed power transformer may rise sharply. The transformer oil is discharged through a pressure relief device to ensure internal pressure balance.

[0003] Traditional methods for handling transformer oil discharged from pressure relief devices typically involve setting up simple oil collection pits or direct discharge. This results in significant resource waste and fire hazards. Furthermore, because transformer oil is a recalcitrant organic compound with a natural degradation rate of only about 5%, leaks can quickly seep into the soil, permafrost, tidal flats, and groundwater, causing irreparable ecological damage. Treatment methods such as soil incineration, off-site refilling, and high-intensity oil-water separation are complex and extremely costly. Moreover, in high-altitude and coastal environments, where the ecosystem is fragile, restoration is extremely time-consuming and challenging.

[0004] Therefore, how to reduce the pollution risk of transformer oil spills to the surrounding environment has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a transformer oil spill treatment system to reduce the risk of transformer oil spill pollution to the surrounding environment.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A transformer oil spill treatment system for collecting and treating oil spills generated by a transformer's pressure relief device, comprising:

[0008] An oil collection container has an oil inlet and an oil return outlet. The oil inlet can be connected to the oil outlet of one or more pressure relief devices of the transformer via an oil pipeline. The oil collection container is used to receive and store transformer oil overflowing from the pressure relief device. The oil return outlet is used to be connected to the oil tank of the transformer via a return pipeline.

[0009] An oil purification unit is provided, which is connected to the oil collection container via an oil circulation pipeline. The oil purification unit is used to purify the transformer oil in the oil collection container.

[0010] An oil quality monitoring unit is installed on the oil circulation pipeline and is used to monitor the quality parameters of the transformer oil.

[0011] Optionally, the above-mentioned transformer oil overflow treatment system further includes a control unit and a pipeline control valve. The control unit is electrically connected to the oil quality monitoring unit and the pipeline control valve, respectively. When the quality parameters of the transformer oil meet the preset conditions, the control unit can control the pipeline control valve to open so that the transformer oil in the oil collection container flows back to the oil tank of the transformer through the return oil pipeline.

[0012] Optionally, the above-mentioned transformer oil spill handling system also includes an oil spill alarm device, which is installed on the oil pipeline and is used to generate an alarm signal when oil spill occurs in the pressure relief device.

[0013] Optionally, in the above-mentioned transformer oil spill handling system, the oil spill alarm device includes an audible and visual alarm; and / or,

[0014] The oil purification unit includes a mobile oil filter.

[0015] Optionally, in the above-mentioned transformer oil overflow treatment system, the oil injection port and the oil return port are the same connection port of the oil collection container.

[0016] Optionally, in the above-mentioned transformer oil spill handling system, the oil delivery pipeline includes a flexible pipe for connecting one or more pressure relief devices of the transformer.

[0017] Optionally, the above-mentioned transformer oil overflow treatment system also includes an oil storage bladder, which is connected to the oil collection container and is connected to the oil discharge port of the pressure relief device of multiple transformers through the oil pipeline. The oil storage bladder has a contracted state and an expanded state, and the oil storage bladder can adaptively deform according to the change in the amount of transformer oil contained inside the oil storage bladder.

[0018] Optionally, in the above-mentioned transformer oil spill handling system, the oil pipeline includes a rigid pipe and a flexible pipe for connecting multiple transformer pressure relief devices in parallel. One end of the flexible pipe is used to connect to the pressure relief device of the transformer, and the other end of the flexible pipe is connected to the oil storage tank through the rigid pipe.

[0019] Optionally, in the above-mentioned transformer oil spill treatment system, both the oil storage bladder and the oil collection container are equipped with breathers.

[0020] Optionally, in the above-mentioned transformer oil spill treatment system, both the oil storage tank and the oil collection container are equipped with liquid level monitoring components.

[0021] The transformer oil spill handling system provided in this application collects transformer oil overflowing from the transformer's pressure relief device using an oil collection container and oil pipeline. The collected oil is then purified by an oil purification unit until the quality parameters monitored by the oil quality monitoring unit meet the quality requirements. Afterward, the transformer oil is returned to the transformer's tank via a return pipeline. As demonstrated above, the transformer oil spill handling system provided in this application eliminates transformer oil leakage at its source, effectively protecting soil and water sources and avoiding high environmental remediation costs caused by pollution. Simultaneously, the oil purification unit circulates and purifies the recovered transformer oil, and the oil quality monitoring unit assesses the purification effect in real time. Compared to offline oil sample testing, this shortens the oil purification time, improves purification efficiency, and reduces purification and testing costs. Furthermore, the recovered transformer oil can be directly reused in the transformer's tank, reducing operation and maintenance costs and preventing resource waste.

[0022] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are those explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the transformer oil spill treatment system provided in the embodiments of this application;

[0025] Figure 2 This is an assembly diagram of the transformer oil spill treatment system provided in Embodiment 1 of this application;

[0026] Figure 3 This is an assembly diagram of the transformer oil spill treatment system provided in Embodiment 2 of this application;

[0027] Figure 4 This is an assembly diagram of the transformer oil spill treatment system provided in Embodiment 3 of this application;

[0028] The annotations in the attached figures are explained as follows:

[0029] Among them, 100 is the transformer oil spill treatment system, 10 is the oil collection container, 11 is the oil pipeline, 111 is the flexible pipe, 112 is the rigid pipe, 20 is the oil purification unit, 21 is the oil circulation pipeline, 30 is the oil quality monitoring unit, 40 is the oil spill alarm device, 50 is the oil storage bladder, 60 is the breather, 70 is the liquid level monitoring component, 200 is the transformer, and 201 is the pressure relief device. Detailed Implementation

[0030] The core of this application is to provide a transformer oil spill treatment system to reduce the risk of transformer oil spill pollution to the surrounding environment.

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Traditional oil-immersed power transformers typically discharge transformer oil through simple oil collection pits or by direct discharge using pressure relief devices. This method not only wastes resources and poses fire hazards, but also, because transformer oil is a non-degradable organic compound, leaks can quickly seep into the soil and groundwater, causing irreparable ecological damage. This is especially true in ecologically fragile areas such as plateaus and coastal regions, where restoration is extremely lengthy, difficult, complex, and costly.

[0033] Therefore, such as Figure 1 As shown in the figure, this application discloses a transformer oil spill treatment system 100 for collecting and treating oil spills generated by the pressure relief device 201 of a transformer 200. The system includes an oil collection container 10, an oil purification unit 20, and an oil quality monitoring unit 30. The oil collection container 10 and the oil pipeline 11 prevent transformer oil leakage at the source, effectively protecting soil and water sources and avoiding high environmental remediation costs caused by pollution. Simultaneously, the oil purification unit 20 circulates and purifies the recovered transformer oil, and the oil quality monitoring unit 30 evaluates the purification effect in real time. Compared to offline oil sample testing, this shortens the oil purification time, improves purification efficiency, and reduces purification and testing costs. Furthermore, the recovered transformer oil can be directly reused in the transformer 200's oil tank, reducing maintenance costs and avoiding resource waste.

[0034] The following will combine Figures 1 to 4 The transformer oil spill treatment system 100 disclosed in the embodiments of this application will be explained and described in detail.

[0035] like Figures 1 to 4 As shown, the oil collection container 10 is configured to temporarily receive and store transformer oil overflowing from the pressure relief device 201. The oil collection container 10 can be a simple oil storage tank, with its internal space used to accommodate the overflow. In the event of an oil overflow, the transformer oil can flow into the oil collection container 10 through the oil pipeline 11 and be temporarily stored, awaiting further processing. Simultaneously, to facilitate the inflow and outflow of oil, the oil collection container 10 can be equipped with an oil inlet and an oil outlet. Specifically, the oil inlet can be a separate interface to receive external oil; the oil outlet can also be another separate interface to discharge the oil from the oil collection container 10. The oil inlet can be located on the lower side of the oil collection container 10 to prevent air bubbles from forming due to a high drop in oil volume, while the oil outlet can be located at the bottom of the oil collection container 10 for gravity discharge. The oil inlet can be connected to the oil outlet of the pressure relief device 201 of one or more transformers 200 via the oil pipeline 11. The oil pipeline 11 can be made of rigid pipe, such as metal pipe or rigid plastic pipe, and fixed by flange or threaded connection to ensure that the overflow oil can be reliably guided to the oil collection container 10. Of course, the oil pipeline 11 can also be made of flexible pipe, such as transparent steel wire hose or metal braided hose, to improve the flexibility of pipe connection. The oil return outlet can be connected to the oil tank of the transformer 200 via the oil return pipeline. The oil return pipeline can be made of conventional pipe materials, such as steel pipe or oil-resistant rubber hose. The purified oil is transported back to the oil tank of the transformer 200 by pumping or gravity, so that the treated transformer oil can be reused and reduce resource waste.

[0036] like Figures 1 to 4 As shown, to purify the collected transformer oil, the oil purification unit 20 can form a closed connection with the oil collection container 10 through the oil circulation pipeline 21. The oil circulation pipeline 21 can be composed of a pump, valves, and pipes, allowing the oil to circulate between the oil collection container 10 and the oil purification unit 20. The oil purification unit 20 can purify the transformer oil 200 in the oil collection container 10. The oil purification unit 20 can use oil filtration equipment, such as a filter device containing multi-stage filter elements, to remove solid particulate impurities from the oil. The oil purification unit 20 can also use equipment to remove moisture and gas from the oil by means of adsorbents or centrifugal separation. Of course, the oil purification unit 20 can also simultaneously use purification equipment with filtration and separation functions, such as an oil filter, to remove moisture, gas, and solid particulate impurities from the oil, thereby restoring the performance of the transformer oil after purification by the oil purification unit 20.

[0037] like Figures 1 to 4As shown, the oil quality monitoring unit 30 is installed on the oil circulation pipeline 21. For example, the oil quality monitoring unit 30 can be installed near the oil inlet of the oil purification unit 20, or on the pipeline between the outlet of the oil collection container 10 and the inlet of the oil purification unit 20, to monitor the quality of the oil in the oil collection container 10 in real time, ensuring that the oil in the oil collection container 10 meets the conditions for reuse. The oil quality monitoring unit 30 can monitor the quality parameters of the transformer oil, and the oil quality monitoring unit 30 can adopt a monitoring device composed of multiple sensors, such as sensors for monitoring the water content, dielectric loss, gas content, and particle size of the oil.

[0038] In the above embodiments, by centrally collecting, effectively purifying, and monitoring the quality of the overflow oil from transformer 200, the overflow transformer oil is recycled, avoiding the resource waste and environmental pollution caused by direct discharge or simple collection of overflow oil in traditional treatment methods, and significantly reducing fire safety hazards. Especially in ecologically fragile areas, this transformer overflow oil treatment system 100 can effectively prevent irreparable ecological damage to soil and water sources caused by transformer oil leakage, thereby reducing complex treatment processes and high economic costs.

[0039] The transformer oil overflow treatment system 100 disclosed in this application can collect the transformer oil overflowing from the pressure relief device 201 of the transformer 200 through the oil collection container 10 and the oil pipeline 11, and purify the collected transformer oil through the oil purification unit 20 until the quality parameters of the transformer oil monitored by the oil quality monitoring unit 30 meet the quality requirements. Then, the transformer oil can be returned to the oil tank of the transformer 200 through the return oil pipeline.

[0040] The transformer oil spill treatment system 100 disclosed in this application can prevent transformer oil leakage at the source, effectively protecting soil and water sources and avoiding high environmental remediation costs caused by pollution. Simultaneously, the recovered transformer oil is circulated and purified by the oil purification unit 20, and the purification effect is evaluated in real time by the oil quality monitoring unit 30. Compared with offline oil sample index testing, this shortens the oil purification time, improves oil purification efficiency, and reduces oil purification and testing costs. Furthermore, the recovered transformer oil can be directly reused in the transformer 200's oil tank, reducing operation and maintenance costs and avoiding resource waste.

[0041] In some embodiments, the transformer oil overflow treatment system 100 may further include a control unit and a pipeline control valve. The control unit may be electrically connected to the oil quality monitoring unit 30 and the pipeline control valve, respectively. When the quality parameters of the transformer oil meet preset conditions, the control unit can control the pipeline control valve to open, so that the transformer oil in the oil collection container 10 flows back to the oil tank of the transformer 200 through the return oil pipeline. Specifically, the control unit may be a microcontroller, a programmable logic controller (PLC), or an industrial control computer. It can receive real-time data from the oil quality monitoring unit 30, make judgments based on preset logic and conditions, and then issue corresponding control commands. The pipeline control valve may be an electric valve, such as an electric ball valve or a solenoid valve, which may be installed on the return oil pipeline. After receiving the opening command issued by the control unit, the pipeline control valve can automatically open, thereby allowing the oil to flow from the oil collection container 10 to the oil tank of the transformer 200 through the return oil pipeline. The control unit establishes an electrical connection with the oil quality monitoring unit 30 through a cable or a wireless communication module to obtain the quality parameter data of the transformer 200 oil in real time. Simultaneously, the control unit is also electrically connected to the pipeline control valve so that it can accurately send opening or closing control signals to the pipeline control valve when specific conditions are met. The quality parameters of the transformer oil meet preset conditions, namely, the qualified range or threshold set for various quality parameters of the transformer 200 oil, such as breakdown voltage, moisture content, acid value, etc. When the quality parameters detected by the oil quality monitoring unit 30 are all within these preset qualified ranges, the control unit will determine that the conditions are met and immediately send an opening command to the pipeline control valve. Once the pipeline control valve is opened by the control unit, the purified transformer 200 oil in the oil collection container 10 will flow back to the oil tank of the transformer 200 safely and effectively through the return oil pipeline under the action of pumping, thereby realizing the recycling of oil. At the same time, the control unit will stop the oil purification unit 20.

[0042] In the above embodiment, by integrating the control unit and pipeline control valve and linking them with the oil quality monitoring unit 30, intelligent management of the oil reinjection process of the purified transformer 200 is achieved. When the oil quality monitoring unit 30 confirms that the oil quality parameters meet the preset conditions, the control unit can precisely control the opening of the pipeline control valve to ensure that only qualified oil is reinjected into the oil tank of the transformer 200. This not only avoids the errors and delays that may be caused by manual judgment, significantly improving the accuracy and safety of oil reinjection, but also effectively prevents unqualified oil from causing secondary pollution or damage to the transformer 200, thereby maximizing the utilization of purified oil resources, reducing operating costs, and improving the reliability of the transformer 200 operation.

[0043] In some embodiments, such as Figure 3As shown, the transformer oil spill handling system 100 may further include an oil spill alarm device 40, which may be installed on the oil pipeline 11. The oil spill alarm device 40 can generate an alarm signal when oil spill occurs in the pressure relief device 201. Specifically, the oil spill alarm device, as a device capable of detecting oil spill events and issuing alarms, can promptly warn operators or the monitoring system when oil spill is detected in the pressure relief device 201 of the transformer 200, so that countermeasures can be taken quickly. The oil spill alarm device may employ a level sensor to determine whether an oil spill has occurred by monitoring whether the oil level in the oil pipeline 11 has reached a preset alarm level; it may also employ a flow sensor to indicate an oil spill by detecting abnormal oil flow in the oil pipeline 11; or it may employ a pressure sensor to indirectly determine an oil spill by monitoring pressure changes in the oil pipeline 11. When these sensors detect an oil spill, they trigger an alarm signal. The alarm signal can manifest in various forms, such as audible and visual alarms, SMS notifications, or displays on a remote monitoring system interface, to ensure effective information transmission. The oil spill alarm device is installed on the oil pipeline 11, ensuring it can directly and in real-time monitor the oil overflowing from the pressure relief device 201. By installing the oil spill alarm device at a specific location on the oil pipeline 11, such as near the drain port of the pressure relief device 201, or in the pipeline section before the oil enters the oil collection container 10, it ensures that the oil spill is detected immediately upon occurrence, avoiding alarm delays caused by oil transmission delays, thereby improving the timeliness and accuracy of oil spill event detection.

[0044] In the above embodiment, by installing an oil spill alarm device on the oil pipeline 11, when oil spill occurs in the pressure relief device 201 of the transformer 200, the oil spill alarm device can immediately detect the event and generate an alarm signal, enabling operators or monitoring systems to be aware of the oil spill situation as soon as possible, thereby quickly activating emergency plans, such as dispatching personnel for on-site inspection, activating additional protective measures, or adjusting the system operating status. This significantly improves the response speed and processing efficiency of oil spill events, effectively avoids the potential expansion of environmental pollution, equipment damage, or increased safety risks caused by information lag, and ensures the reliability and safety of transformer operation.

[0045] In some embodiments, such as Figure 3As shown, the oil spill alarm device 40 may include an audible and visual alarm; and / or, the oil spill alarm device 40 may be signal-connected to an interactive device; and / or, the oil purification unit 20 may include a mobile oil filter. Specifically, the audible and visual alarm is an alarm device that integrates sound and visual prompts. When the oil spill alarm device 40 detects an oil spill event, the audible and visual alarm can simultaneously emit a high-decibel alarm sound and a high-brightness flashing light signal. The sound signal can be generated by a built-in buzzer, horn, or siren, and its volume and frequency can be adjusted according to the environment to ensure that it can be clearly heard even in noisy environments. The visual signal can be achieved through LED lights, strobe lights, or rotating warning lights, whose flashing frequency and brightness can attract the attention of operators and be noticed even in low light or obstructed vision conditions. Furthermore, the oil spill alarm device 40 can be connected to interactive devices such as mobile phones and tablets via signal transmission lines or wireless connections to synchronously send oil spill events to these devices, facilitating real-time monitoring by operators. Simultaneously, the mobile oil filter, as an independently operable and easily transportable oil purification device, integrates an oil pump, multi-stage filtration elements (such as coarse filters, fine filters, and dehydration filter elements), a heater, and necessary control instruments. Based on the actual contamination level and quality requirements of the collected transformer oil, it efficiently removes particulate matter, moisture, and gases, restoring the oil's insulation and cooling properties. The mobile oil filter can be easily moved from one location to another, for example, via wheeled bases, forklift holes, or lifting points. This allows one mobile oil filter to serve the oil spill treatment needs of multiple oil collection containers 10 or different transformers 200, eliminating the need for a separate fixed purification device for each collection point.

[0046] In the above embodiments, by specifically implementing the oil spill alarm device as an audible and visual alarm, the alarm effect of oil spill events can be significantly improved. When oil spill occurs in the pressure relief device 201, the audible and visual alarm simultaneously emits sound and light signals, which can quickly attract the attention of on-site operators in a multi-sensory manner. Even in environments with high noise or limited visibility, it can ensure that alarm information is perceived in a timely manner, thereby avoiding potential risks caused by failure to detect oil spills in time and ensuring equipment and personnel safety. At the same time, using a mobile oil filter in the oil purification unit 20 greatly enhances the flexibility and economy of the transformer oil spill treatment system 100 in terms of oil purification. The mobile oil filter can be easily moved to different oil collection containers 10 for purification operations according to actual needs, avoiding the cost and space occupation of configuring fixed purification equipment at each collection point. This allows for more efficient use of oil purification resources and enables customized treatment for different batches or different levels of contamination of spilled oil, ensuring that the quality of the oil returning to the transformer 200 tank meets the requirements and extending the service life of the transformer 200.

[0047] In some embodiments, the oil inlet and outlet can be the same connection port on the oil collection container 10. That is, on the external interface of the oil collection container 10, the inlet for receiving overflow oil from the pressure relief device 201 and the outlet for returning the purified transformer oil 200 to the transformer oil tank are the same connection point. This same connection port can be a single interface with internal flow channel switching or external pipeline switching functions. For example, an integrated valve or flow channel switching mechanism can be installed inside the connection port so that when overflow oil is collected, oil enters the container through the connection port; and when oil is returned, the purified oil flows out of the container through the connection port. Alternatively, the connection port can be a universal interface, externally connected to the oil supply pipeline 11 and the oil return pipeline through a three-way valve or switching valve, and switched according to the system operating mode, thereby realizing that oil filling and oil return share a single connection point.

[0048] In the above embodiments, by merging the oil inlet and outlet of the oil collection container 10 into a single connection port, the structural design of the oil collection container 10 is significantly simplified, reducing the number of openings and connecting components required on the oil collection container 10. This reduces manufacturing difficulty and cost, while effectively reducing potential sealing points, lowering the risk of leakage in the transformer oil spill treatment system 100, and improving the reliability and safety of the transformer oil spill treatment system 100. Furthermore, the shared connection port design optimizes the external space layout of the container, making the entire oil spill treatment system more compact and easier to install and maintain. In actual operation, when the pressure relief device 201 overflows, the overflowing oil enters the oil collection container 10 through this same connection port. After the oil purification unit 20 completes purification and the oil quality monitoring unit 30 confirms that the oil is qualified, the control unit opens the control valve of the control pipeline, and the purified oil flows back to the oil tank of the transformer 200 through this same connection port, achieving unified management of oil entering and leaving the container and improving operational efficiency.

[0049] In some embodiments, such as Figures 1 to 4 As shown, the oil pipeline 11 may include a flexible pipe 111 for connecting the pressure relief device 201 of one or more transformers 200. Specifically, the flexible pipe 111, as a pipe with a certain degree of flexibility and extensibility, can adapt to relative displacement, angular deviation, or vibration between the two ends of the connection. The flexible pipe 111 can be made of oil-resistant rubber tubing, polymer tubing, or metal corrugated tubing, etc. Of course, different lining materials and reinforcing layers can also be selected according to actual application requirements. For example, an oil-resistant rubber hose with an internal oil-resistant layer, an external weather-resistant layer, and a reinforcing fiber layer sandwiched in the middle can be used to ensure long-term stable operation in transformer oil environment. In addition, the flexible pipe 111 can also be made of stainless steel corrugated tubing or transparent steel wire hose with excellent corrosion resistance and high temperature resistance to be suitable for more severe environments. Both ends of the flexible pipe 111 can be equipped with quick couplings or flange connections to facilitate reliable connection with the oil drain port of the pressure relief device 201 of the transformer 200 and other parts of the oil pipeline 11.

[0050] In the above embodiments, the flexible pipe 111 enhances the installation flexibility of the transformer oil spill treatment system 100. The flexible pipe 111 effectively compensates for installation deviations between the oil outlet of the pressure relief device 201 of the transformer 200 and the oil pipeline 11, avoiding stress concentration and potential leakage risks caused by rigid connections. This greatly simplifies on-site installation and commissioning, and reduces the requirements for installation accuracy. Simultaneously, the flexible pipe 111 absorbs minor vibrations that may occur during the operation of the transformer 200, protecting the sealing of the connection interface and ensuring that spilled oil can be reliably guided into the oil collection container 10 for subsequent purification. During maintenance or component replacement of the transformer oil spill treatment system 100, the ease of disassembly and reconnection of the flexible pipe 111 significantly improves operational convenience, shortens maintenance time, and thus enhances the reliability and practicality of the entire transformer oil spill treatment system 100.

[0051] In some embodiments, such as Figure 4As shown, the transformer oil spill treatment system 100 may further include an oil reservoir 50, which can be connected to the oil collection container 10. The oil reservoir 50 can also be connected to the drain ports of the pressure relief devices 201 of multiple transformers 200 via oil pipelines 11. The oil reservoir 50 has a contracted state and an expanded state, and it can adaptively deform according to the change in the amount of transformer oil contained within it. Specifically, the oil reservoir 50, as a flexible or semi-flexible container, is used for temporary oil storage and can be connected to the oil collection container 10 via pipes, valves, or direct openings. For example, the bottom of the oil reservoir 50 can be connected to the side of the oil collection container 10 via a connecting pipe, allowing flow under the action of a pump or other driving component. This increases the total oil storage capacity of the transformer oil spill treatment system 100 and provides a buffer for the oil collection container 10 to cope with sudden large-volume oil spills. The oil reservoir 50 can be connected to the drain ports of the pressure relief devices 201 of multiple transformers 200 via the oil supply pipeline 11. That is, the oil reservoir 50, as a primary receiving unit for overflow oil, can be directly connected to the pressure relief devices 201 of multiple transformers 200. The oil supply pipeline 11 can be connected in parallel to the drain ports of the pressure relief devices 201 of multiple transformers 200 to the oil reservoir 50, ensuring that the overflow oil from each transformer 200 can independently and smoothly enter the oil reservoir 50. The oil supply pipeline 11 can be made of oil-resistant and pressure-resistant materials, such as metal pipes, high-strength rubber hoses, or a combination of various pipelines, to adapt to different installation environments and connection requirements. The oil reservoir 50 can have both a contracted and expanded state, and the oil reservoir 50 can adaptively deform according to the change in the amount of transformer oil contained inside the oil reservoir 50. The oil reservoir 50 can be made of flexible materials, such as rubber, polyurethane, or other polymer composite materials, and its structure can be pneumatic, diaphragm, or bellows type. When the transformer 200 is under special operating conditions and oil overflow occurs at the drain port of the pressure relief device 201, the oil reservoir 50, which is connected to the drain port of the pressure relief device 201, can rapidly expand. When the oil volume in the oil reservoir 50 decreases or oil overflow does not occur at the drain port of the pressure relief device 201, the oil reservoir 50 can contract to a contracted state, thereby reducing the volume of the oil reservoir 50 and the space it occupies. The contraction and expansion characteristics of the oil reservoir 50 enable it to effectively buffer the impact of oil overflow, maintain the stability of the internal pressure of the system, prevent oil backflow or pipeline damage, and its flexible characteristics also allow it to occupy less space when unloaded.

[0052] In the above embodiment, the oil reservoir 50 is connected to the oil collection container 10, and can also be directly connected to the oil drain port of the pressure relief device 201 of multiple transformers 200, which can significantly improve the centralized collection capacity of oil spills from multiple transformers. The contraction and expansion characteristics of the oil reservoir 50 enable it to adaptively respond to changes in the amount of oil spill, effectively buffering the impact of a large amount of instantaneous oil spill, avoiding the risk of overflow due to insufficient capacity of the oil collection container 10, and stabilizing the pressure of the entire oil collection container 10. In addition, as a primary buffer and storage unit, the oil reservoir 50 reduces the direct load on the oil collection container 10, allowing the oil collection container 10 to focus more on subsequent purification treatment, thereby improving the reliability and efficiency of the entire oil spill treatment system. When multiple transformers experience oil spills simultaneously or a single transformer experiences a large-scale oil spill, it can ensure that the spilled oil is collected in a timely and safe manner, avoiding environmental pollution and equipment damage.

[0053] In some embodiments, the oil pipeline 11 may include a rigid pipe 112 and a flexible pipe 111 for parallel connection of pressure relief devices 201 of multiple transformers 200. One end of the flexible pipe 111 can be connected to the pressure relief device 201 of the transformer 200, and the other end of the flexible pipe 111 is connected to the oil reservoir 50 through the rigid pipe 112. Specifically, the rigid pipe 112 is a pipe made of materials such as metal (e.g., stainless steel, carbon steel) or rigid plastic (e.g., PVC, PE), which can have high strength and rigidity and is not easily deformed. The rigid pipe 112 can be used to construct the main pipeline of the transformer oil spill treatment system 100 or a connection part that needs to be fixed for a long time and withstand large external stress. It can provide a stable oil delivery channel, resist external impact and pressure, thereby ensuring the structural stability of the entire pipeline system. In actual installation, the rigid pipe 112 can be fixed by welding, flange connection or threaded connection. The flexible pipe 111 refers to a pipe made of materials such as rubber, plastic or metal corrugated pipe, which can have good flexibility and bendability. The flexible pipe 111 can connect to equipment requiring a certain displacement, vibration absorption, or limited installation space, such as connecting to the oil drain port of the pressure relief device 201 of the transformer 200. The flexible pipe 111 effectively compensates for relative movement between devices, absorbs vibrations generated during equipment operation, simplifies on-site installation, and avoids stress concentration or connection difficulties caused by rigid connections. The ends of the flexible pipe 111 can be equipped with suitable connectors (such as threaded connectors or quick connectors) to match and connect with the oil drain port of the pressure relief device 201 and the rigid pipe 112, ensuring reliable and airtight connections. The oil pipeline 11, using a combination of the rigid pipe 112 and the flexible pipe 111, enables parallel connection of multiple pressure relief devices 201 of the transformer 200. This means that multiple branch lines (pipelines connecting each pressure relief device 201) converge into a main pipeline, ensuring that the overflow oil from each pressure relief device 201 can independently and smoothly enter the collection system, preventing blockage of one device from affecting the collection of overflow oil from other devices. The other end of the flexible pipe 111 is connected to the branch interface of the rigid pipe 112. The rigid pipe 112 serves as a manifold to uniformly transport the overflow oil from different pressure relief devices 201 to the oil storage bladder 50.

[0054] In the above embodiment, by using a combination of rigid pipe 112 and flexible pipe 111 in the oil pipeline 11, the problem of oil spill collection when multiple transformers 200 pressure relief devices 201 are distributed in different locations can be effectively solved. The rigid pipe 112, as the main pipeline, provides stable structural support and long-distance transport capacity, ensuring the overall reliability of the oil collection system. The flexible pipe 111 provides the necessary flexibility and adaptability when connecting each pressure relief device 201, compensating for equipment installation errors and operational vibrations, greatly simplifying the on-site installation process, and ensuring the sealing and robustness of the connection. Simultaneously, the parallel connection method allows the oil spill from each pressure relief device 201 to enter the oil storage bladder 50 independently and smoothly, avoiding problems such as complex installation, difficult maintenance, or weak connections that may occur with a single pipeline, thereby improving the efficiency of oil spill collection and the operational stability of the system.

[0055] In some embodiments, such as Figure 4 As shown, both the oil reservoir 50 and the oil collection container 10 are equipped with breathers 60. Specifically, the breather 60 is a device that balances the pressure difference between the inside and outside of the container, and prevents moisture, dust, and other impurities in the outside air from entering the container. It is filled with a desiccant (such as silica gel) and / or a filter medium. When the pressure inside the container increases or decreases, air enters and exits through the breather 60. The desiccant absorbs moisture from the air, and the filter medium blocks dust, thereby keeping the oil inside the container clean and dry. The breather 60 can be selected with different specifications and filtration precision according to the specific application environment and the volume of the oil collection container 10 and the oil reservoir 50. For example, a breather with color-changing silica gel can be used to facilitate observation of the desiccant saturation level and timely replacement. In addition, the breather 60 can also integrate an oil mist filter to prevent oil vapor from being discharged with the air and causing environmental pollution.

[0056] In the above embodiments, by installing breathers 60 on both the oil reservoir 50 and the oil collection container 10, when the oil reservoir 50 deforms due to changes in oil volume or the oil volume in the oil collection container 10 increases or decreases, the breathers 60 can effectively balance the air pressure inside and outside the container, preventing damage to the container structure or affecting its normal operation due to excessive pressure difference. Simultaneously, the breathers 60 can filter the air entering the container, removing moisture, dust, and other harmful impurities, thereby effectively protecting the quality of the transformer oil, preventing moisture absorption or contamination, extending the service life of the oil, and ensuring the long-term stable operation of the transformer oil overflow treatment system 100.

[0057] In some embodiments, such as Figure 4As shown, both the oil reservoir 50 and the oil collection container 10 are equipped with a liquid level monitoring component 70. Specifically, the liquid level monitoring component 70, as a device capable of detecting the liquid level in real time or periodically, may include a sensor part that contacts the liquid or senses changes in the liquid, and a signal processing part that converts physical quantities into readable signals. This allows it to provide continuous liquid level data or trigger alarm signals at specific liquid levels, providing critical oil quantity information to system operators. The liquid level monitoring component 70 may employ a float-type liquid level gauge, where the float rises and falls with the liquid level, driving mechanical or electrical signal output; it may also employ an ultrasonic liquid level gauge, which calculates the liquid level height based on the time difference of sound wave propagation in the medium by emitting and receiving ultrasonic waves; or it may employ a hydrostatic liquid level gauge, which calculates the liquid level height by measuring the static pressure generated by the liquid.

[0058] In the above embodiments, by installing level monitoring components 70 on both the oil storage bladder 50 and the oil collection container 10, the transformer oil overflow treatment system 100 can obtain real-time and accurate oil level information for these two key oil storage units. This allows operators to clearly understand the current oil storage status of the transformer oil overflow treatment system 100, enabling them to rationally schedule the operation of the oil purification unit 20 based on actual oil level changes, avoiding the risk of overflow due to excessive oil, and effectively preventing environmental pollution and safety accidents. Simultaneously, continuous monitoring of the oil level also helps to evaluate the overall operating efficiency and capacity utilization of the transformer oil overflow treatment system 100, ensuring that the system is always in optimal working condition, thus improving the intelligent management level and operational reliability of the system.

[0059] The transformer oil spill treatment system 100 disclosed in this application will be further described below in conjunction with specific application scenarios.

[0060] In some embodiments, such as Figure 2 As shown, when transformer 200 undergoes an in-plant sudden short-circuit test, the pressure relief device 201 triggers an oil overflow, allowing the transformer oil to be channeled through a high-strength flexible pipe 111 into a sealed oil collection container 10. When the level monitoring component 70 detects that the oil collection container 10 has collected a certain amount of oil, and the oil reaches the purification trigger threshold, it can be transported through the oil circulation pipeline 21 to the oil purification unit 20 for purification. Once the oil quality monitoring unit 30 detects that the oil is qualified, it is reinjected into the corresponding transformer 200 for reuse.

[0061] In some embodiments, such as Figure 3As shown, in high-altitude or coastal locations, under conditions of oil injection or hot oil circulation, if oil overflow occurs at the pressure relief device 201, the oil overflow alarm device 40 will immediately trigger an alarm, alerting on-site personnel to take action. The transformer oil will be collected in the oil collection container 10 via a high-strength flexible pipe 111. When the level monitoring component 70 detects that a certain amount of oil has been collected in the oil collection container 10, and the oil reaches the purification trigger threshold, it can be transported through the oil circulation pipeline 21 to the oil purification unit 20 for purification. Once the oil quality monitoring unit 30 detects that the oil is qualified, it is reinjected into the corresponding transformer 200 for reuse.

[0062] In some embodiments, such as Figure 4 As shown, in a scenario where multiple transformers 200 operate simultaneously in high-altitude or coastal areas, the oil outlets of the pressure relief devices 201 of each transformer 200 are connected in parallel via high-strength flexible pipes 111 and pressure-resistant rigid pipes 112 to an explosion-proof oil reservoir 50. The oil reservoir 50 can maintain a normally open connection with the oil circuits of multiple transformers 200. When oil overflows from the pressure relief device 201 of a single transformer 200, the oil automatically flows into the oil reservoir 50. The liquid level monitoring component 70 displays the collected oil volume in real time. When the oil volume reaches a set value, the oil in the oil reservoir 50 is transported to the oil collection container 10. When the liquid level monitoring component 70 detects that the oil collection container 10 has collected a certain amount of oil, until it reaches the purification trigger threshold, it can be transported to the oil purification unit 20 through the oil circulation pipeline 21 for purification treatment. After the oil quality monitoring unit 30 detects that it is qualified, it can be reinjected into the corresponding transformer 200 for reuse.

[0063] The terminology used in the above embodiments is for the purpose of describing specific embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0064] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0065] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0066] The terms "parallel" and "perpendicular" used in this application refer to "basically parallel" and "basically perpendicular" in practical operation. "Basically parallel" can be understood as parallelism with a certain degree of error, and similarly, "basically perpendicular" can be understood as perpendicularity with a certain degree of error.

[0067] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transformer oil spill treatment system for collecting and treating oil spills generated by the pressure relief device (201) of a transformer (200), characterized in that, include: An oil collection container (10) has an oil inlet and an oil return port. The oil inlet is connected to the oil outlet of the pressure relief device (201) of one or more transformers (200) via an oil pipeline (11). The oil collection container (10) is used to receive and store transformer oil overflowing from the pressure relief device (201). The oil return port is used to connect to the oil tank of the transformer (200) via an oil return pipeline. Oil purification unit (20), the oil purification unit (20) is connected to the oil collection container (10) through the oil circulation pipeline (21), the oil purification unit (20) is used to purify the transformer oil in the oil collection container (10); Oil quality monitoring unit (30) is installed on the oil circulation pipeline (21) and is used to monitor the quality parameters of the transformer oil.

2. The transformer oil spill treatment system according to claim 1, characterized in that, It also includes a control unit and a pipeline control valve. The control unit is electrically connected to the oil quality monitoring unit (30) and the pipeline control valve respectively. When the quality parameters of the transformer oil meet the preset conditions, the control unit can control the pipeline control valve to open so that the transformer oil in the oil collection container (10) flows back to the oil tank of the transformer (200) through the return oil pipeline.

3. The transformer oil spill treatment system according to claim 1, characterized in that, It also includes an oil spill alarm device (40), which is installed on the oil pipeline (11) and is used to generate an alarm signal when an oil spill occurs in the pressure relief device (201).

4. The transformer oil spill treatment system according to claim 3, characterized in that, The oil spill alarm device (40) includes an audible and visual alarm; and / or, The oil spill alarm device (40) can be connected to an interactive device for signal transmission; and / or, The oil purification unit (20) includes a mobile oil filter.

5. The transformer oil spill treatment system according to claim 1, characterized in that, The oil inlet and the oil return outlet are the same connection port of the oil collection container (10).

6. The transformer oil spill treatment system according to any one of claims 1 to 5, characterized in that, The oil pipeline (11) includes a flexible pipe (111) for connecting a pressure relief device (201) of one or more of the transformers (200).

7. The transformer oil spill treatment system according to claim 1, characterized in that, It also includes an oil reservoir (50), which is connected to the oil collection container (10), and the oil reservoir (50) is connected to the oil outlet of the pressure relief device (201) of multiple transformers (200) through the oil pipeline (11). The oil reservoir (50) has a contracted state and an expanded state, and the oil reservoir (50) can adapt to the change in the amount of transformer oil contained inside the oil reservoir (50).

8. The transformer oil spill treatment system according to claim 7, characterized in that, The oil pipeline (11) includes a rigid pipe (112) and a flexible pipe (111) for connecting multiple pressure relief devices (201) of the transformers (200) in parallel. One end of the flexible pipe (111) is used to connect to the pressure relief device (201) of the transformer (200), and the other end of the flexible pipe (111) is connected to the oil storage tank (50) through the rigid pipe (112).

9. The transformer oil spill treatment system according to claim 7, characterized in that, Both the oil storage bladder (50) and the oil collection container (10) are equipped with breathers (60).

10. The transformer oil spill treatment system according to claim 7, characterized in that, Both the oil storage bladder (50) and the oil collection container (10) are equipped with a liquid level monitoring component (70).

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