Transformer oil circulating purification mechanism and oil purifier
Patent Information
- Application Number
- CN202522286125.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-29
AI Technical Summary
[0003]然而，在实际运行过程中，变压器油会受到多种因素的影响而逐渐劣化
通过过滤机构的两个过滤板对油品进行双重过滤，能有效去除油中的微小颗粒和杂质，提高油的绝缘性能；同时冷却机构对油品进行冷却，维持变压器适宜工作温度，避免了因过热导致的设备性能下降和损坏，保障了变压器的安全稳定运行；冷却机构与过滤机构协同工作，先对抽出的高温变压器油进行冷却，降低油品温度后再进行过滤，能够避免高温油对过滤板造成损害，延长过滤板的使用寿命。
Smart Images
Figure CN224841424U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of transformer oil filtration, and in particular to a transformer oil circulation purification mechanism and oil filter. Background Technology
[0002] Transformers undertake critical tasks such as voltage transformation, power distribution, and transmission in power systems. Transformer oil plays an indispensable role in this process. It not only has an insulating function, effectively isolating electrical connections between components at different potentials within the transformer to prevent leakage and short circuit accidents, thus ensuring the safe and stable operation of the transformer, but also has a cooling function. Through circulation, it carries away the heat generated during transformer operation, maintaining a suitable operating temperature and preventing overheating that could lead to performance degradation or even damage.
[0003] However, in actual operation, transformer oil gradually deteriorates due to various factors. During long-term operation, the internal insulation materials of a transformer gradually age, producing tiny particles and impurities. These substances mix into the transformer oil, reducing its insulating properties. Furthermore, during transformer maintenance and repair, the inadvertent introduction of external contaminants can also pollute the transformer oil. Deteriorated transformer oil not only reduces the transformer's insulation and cooling efficiency but may also accelerate the aging and damage of other internal components, severely impacting the transformer's lifespan and the reliability of the power system. Therefore, there is an urgent need for a transformer oil circulation and purification mechanism and oil filter. Utility Model Content
[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this utility model provides a transformer oil circulation purification mechanism and an oil filter.
[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses a transformer oil circulation purification mechanism and oil filter, comprising: A support base plate is provided, which is set on the ground. A pump support rod is provided on the support base plate, and an oil suction pump is provided on the pump support rod. An oil inlet is connected to the input end of the oil suction pump, and an oil delivery pipe is connected to the output end of the oil suction pump. The filtration mechanism, located on the support base plate, is used to filter and purify the transformer oil. The cooling mechanism, installed on the support base plate, is used to cool the extracted transformer oil. The cooling mechanism is connected to the oil delivery pipe and the filtration mechanism. The filtration mechanism includes: The cylinder bracket is fixedly installed on the support base plate; The filter cartridge is fixedly installed on the cartridge support, and a filter chamber is provided inside the filter cartridge. The connecting pipe is connected to the bottom end of the filter cylinder, and the other end of the connecting pipe is connected to the cooling mechanism; An overflow pipe is vertically installed inside the filter cylinder, and an overflow port is provided at the top of the overflow pipe; Two filter plates are fixedly mounted on the overflow pipe. The top cover is installed at the top of the filter cartridge; The oil outlet pipe is connected to the bottom of the overflow pipe and is used to discharge the purified transformer oil.
[0006] Furthermore, the cooling mechanism includes: The cooling cylinder is fixedly mounted on the supporting base plate; The refrigeration unit is fixedly installed at the top of the cooling cylinder. The refrigeration unit is electrically connected to an external power supply. Multiple cooling pipes are installed at the bottom of the refrigeration unit, and each cooling pipe is located inside the cooling cylinder.
[0007] Furthermore, the filtration mechanism also includes: The guide slide is fixedly installed on the top cover; The liquid level guide rod is slidably inserted and mounted on the guide slide seat. Two floats are slidably mounted on the liquid level guide rod. The main body of the liquid level guide rod is located inside the filter cylinder. A liquid level indicator is set at the top of the liquid level guide rod and is located above the top cover.
[0008] Furthermore, a sealing gasket is fitted onto the liquid level guide rod, and the sealing gasket is positioned above the guide slide seat.
[0009] Furthermore, an oil separator is provided on the inner wall of the filter cartridge. The oil separator is fitted outside the liquid level guide rod and has an inlet. The inlet of the oil separator is located above the overflow port of the overflow pipe.
[0010] Furthermore, an exhaust port is provided on the top cover.
[0011] Furthermore, a one-way valve is installed on the connecting pipe.
[0012] Furthermore, four casters are provided at the bottom of the support base plate.
[0013] In the above technical solution, the transformer oil circulation purification mechanism and oil filter provided by this utility model have the following beneficial effects: The oil undergoes dual filtration through two filter plates in the filtration mechanism, effectively removing tiny particles and impurities and improving its insulation properties. Simultaneously, the cooling mechanism cools the oil, maintaining the transformer at a suitable operating temperature and preventing performance degradation and damage due to overheating, thus ensuring the safe and stable operation of the transformer. The cooling and filtration mechanisms work together to first cool the extracted high-temperature transformer oil, lowering its temperature before filtration. This prevents high-temperature oil from damaging the filter plates and extends their service life. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly described below.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the filtration mechanism; Figure 3 This is a schematic diagram of the connection structure between the cooling mechanism and the oil suction pump; Figure 4 This is a cross-sectional view of the cooling mechanism. The following are labels in the attached diagram: 1. Support base plate; 11. Pump support rod; 12. Oil suction pump; 13. Oil delivery pipe; 14. Oil inlet; 15. Casters; 2. Filtration mechanism; 21. Cylinder support; 22. Filter cylinder; 23. Connecting pipe; 24. Overflow pipe; 25. Filter plate; 26. Top cover; 27. Oil outlet pipe; 2a. Guide slide seat; 2b. Liquid level guide rod; 2c. Float; 2d. Liquid level indicator; 2e. Sealing gasket; 2f. Oil separator box; 3. Cooling mechanism; 31. Cooling cylinder; 32. Refrigeration box; 33. Cooling pipe. Detailed Implementation
[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0017] See Figure 1-4 As shown; An embodiment of the present invention provides a transformer oil circulation purification mechanism and oil filter, comprising: A support base plate 1 is provided on the ground. A pump support rod 11 is provided on the support base plate 1. An oil suction pump 12 is provided on the pump support rod 11. An oil inlet 14 is connected to the input end of the oil suction pump 12. An oil delivery pipe 13 is connected to the output end of the oil suction pump 12. The filter mechanism 2 is installed on the support base plate 1 and is used to filter and purify the transformer oil. Cooling mechanism 3 is installed on the support base plate 1 and is used to cool the extracted transformer oil. Cooling mechanism 3 is connected to oil delivery pipe 13 and to filter mechanism 2. The filter mechanism 2 includes: The cylinder bracket 21 is fixedly installed on the support base plate 1; The filter cartridge 22 is fixedly installed on the cartridge support 21, and a filter chamber is provided inside the filter cartridge 22. The connecting pipe 23 is connected to the bottom end of the filter cylinder 22, and the other end of the connecting pipe 23 is connected to the cooling mechanism 3. An overflow pipe 24 is vertically installed inside the filter cylinder 22, and an overflow port is provided at the top of the overflow pipe 24; Two filter plates 25 are fixedly mounted on the overflow pipe 24. Top cover 26, which is installed at the top of filter cartridge 22; Oil outlet pipe 27 is connected to the bottom end of overflow pipe 24 and is used to discharge purified transformer oil. By adopting the above technical solution, the oil inlet 14 is connected to the transformer, and the oil suction pump 12 installed on the pump support 11 is started. The oil suction pump 12 draws out the transformer oil from the transformer through the oil inlet 14 and transports the oil out through the oil delivery pipe 13. The oil delivery pipe 13 transports the drawn transformer oil to the cooling mechanism 3, which cools the high-temperature transformer oil to reduce its temperature to a suitable range for subsequent processing. The cooled transformer oil is then fed from the cooling mechanism 3 into the filter cylinder 22 through the connecting pipe 23, with the output end of the connecting pipe 23 located outside the overflow pipe 24. As the oil is continuously fed in, the oil level inside the filter cylinder 22 gradually rises, and the oil passes through the two filter plates 25 fixedly mounted on the overflow pipe 24 layer by layer for double filtration, removing impurities from the oil. The clean oil, after double filtration, flows into the overflow pipe 24 through the overflow port at the top of the overflow pipe 24, and is finally discharged through the oil outlet pipe 27 connected to the bottom of the overflow pipe 24, completing the circulation and purification process of the transformer oil. The oil is double-filtered by the two filter plates 25 of the filtration mechanism 2, which can effectively remove the small particles and impurities in the oil and improve the insulation performance of the oil. At the same time, the cooling mechanism 3 cools the oil to maintain the transformer at a suitable operating temperature, avoiding equipment performance degradation and damage caused by overheating, and ensuring the safe and stable operation of the transformer. The cooling mechanism 3 works in conjunction with the filtration mechanism 2 to cool the extracted high-temperature transformer oil first, reduce the oil temperature before filtration, and avoid damage to the filter plates 25 by the high-temperature oil, thus extending the service life of the filter plates 25.
[0018] As a preferred embodiment of the above technical solution, such as Figures 3 to 4 As shown, the cooling mechanism 3 includes: Cooling cylinder 31 is fixedly installed on the support base plate 1; The refrigeration box 32 is fixedly installed at the top of the cooling cylinder 31. The refrigeration box 32 is electrically connected to an external power supply. Multiple cooling pipes 33 are provided at the bottom of the refrigeration box 32, and each cooling pipe 33 is located inside the cooling cylinder 31. In this embodiment, the oil suction pump 12 delivers the extracted transformer oil to the cooling cylinder 31 in the cooling mechanism 3 via the oil delivery pipe 13. The refrigeration box 32 starts cooling, and each cooling pipe 33 is located inside the cooling cylinder 31, making full contact with the high-temperature transformer oil flowing into the cooling cylinder 31. Heat exchange occurs between the low-temperature medium in the cooling pipe 33 and the high-temperature transformer oil. The high-temperature transformer oil transfers heat to the low-temperature medium in the cooling pipe 33, and its own temperature gradually decreases. The low-temperature medium absorbs heat and its temperature rises. It is then circulated by the refrigeration box 32 and cooled down again, continuing to participate in heat exchange. After sufficient heat exchange, the temperature of the transformer oil drops to a suitable range and flows out from the cooling cylinder 31 through the connecting pipe 23, entering the subsequent filtration mechanism 2 for filtration and purification. The multiple cooling pipes 33 located inside the cooling cylinder 31 greatly increase the contact area between the cooling pipes 33 and the transformer oil. The larger the contact area, the higher the efficiency of heat exchange, and the higher the temperature of the high-temperature transformer oil can be cooled to the required temperature in a shorter time, effectively improving the cooling speed and cooling effect.
[0019] As a preferred embodiment of the above technical solution, such as Figure 2 As shown, the filter mechanism 2 also includes: The guide slide 2a is fixedly installed on the top cover 26; The liquid level guide rod 2b is slidably inserted on the guide slide seat 2a. Two float balls 2c are slidably mounted on the liquid level guide rod 2b. The main body of the liquid level guide rod 2b is located inside the filter cylinder 22. A liquid level indicator 2d is provided at the top of the liquid level guide rod 2b. The liquid level indicator 2d is located above the top cover 26. In this embodiment, the two floats 2c can move up and down with the change of oil level in the filter cylinder 22, and transmit the liquid level information to the liquid level indicator 2d above the top cover 26 through the liquid level guide rod 2b. The operator can obtain the oil level in the filter cylinder 22 in real time through the liquid level indicator 2d and keep abreast of the equipment's operating status. When the oil level in the filter cylinder 22 rises abnormally, the liquid level indicator 2d can issue a warning signal in time to remind the operator to take appropriate measures, thus ensuring the safe and stable operation of the entire transformer oil circulation purification mechanism and oil filter.
[0020] As a preferred embodiment of the above technical solution, such as Figure 2 As shown, a sealing gasket 2e is fitted on the liquid level guide rod 2b, and the sealing gasket 2e is positioned above the guide slide seat 2a; In this embodiment, the sealing gasket 2e is positioned above the guide slide seat 2a and tightly fitted onto the liquid level guide rod 2b, effectively filling the tiny gap between the guide slide seat 2a and the liquid level guide rod 2b. During equipment operation, the transformer oil inside the filter cartridge 22 will not leak out through this gap, preventing oil leakage from polluting the surrounding environment and maintaining the cleanliness of the work area. The sealing gasket 2e also acts as an isolation barrier, preventing dust, impurities, and other external contaminants from entering the filter cartridge 22 through the gap between the guide slide seat 2a and the liquid level guide rod 2b, thus improving the purification effect of the transformer oil.
[0021] As a preferred embodiment of the above technical solution, such as Figure 2 As shown, an oil separator 2f is provided on the inner wall of the filter cylinder 22. The oil separator 2f is fitted outside the liquid level guide rod 2b. An inlet is provided on the oil separator 2f. The inlet of the oil separator 2f is located above the overflow port of the overflow pipe 24. In this embodiment, after the oil suction pump 12 starts, it draws transformer oil from the transformer and transports it to the cooling mechanism 3 via the oil delivery pipe 13 for cooling. The cooled oil is then fed into the filter cylinder 22 through the connecting pipe 23. At this time, the oil level in the filter cylinder 22 gradually rises. As the level rises, the oil passes through two filter plates 25 fixedly mounted on the overflow pipe 24, undergoing double filtration to remove impurities and small particles from the oil. The filtered oil continues to rise and flows into the overflow pipe 24 through the overflow port at the top of the overflow pipe 24. In step 4, once the bottom of the overflow pipe 24 is blocked, the oil level inside the entire filter cylinder 22 will continue to rise, exceeding the overflow port. When it rises to the height of the inlet of the oil separator 2f, the oil will flow through the inlet into the oil separator 2f, which is fitted outside the level guide rod 2b. As the oil level in the oil separator 2f rises and touches the float 2c, the level indicator 2d issues a level indication, directly indicating the overflow pipe 24. This facilitates the reminder to stop the equipment and promptly carry out maintenance, preventing transformer oil spillage and improving operational stability.
[0022] As a preferred embodiment of the above technical solution, an exhaust port is provided on the top cover 26; In this embodiment, if the gas inside the filter cartridge cannot be discharged in time, the pressure inside the cartridge will gradually increase as oil continues to enter; excessive pressure may damage components such as the filter cartridge and top cover, or even cause a safety accident; the exhaust port can maintain the pressure balance inside the filter cartridge, avoid equipment failure caused by excessive pressure, and ensure the safe and stable operation of the equipment.
[0023] As a preferred embodiment of the above technical solution, such as Figure 3 As shown, a one-way valve is connected to the connecting pipe 23; In this embodiment, during equipment operation, if pressure fluctuations occur inside the filter cartridge or the equipment stops operating, the oil inside the filter cartridge may tend to flow backward due to gravity or other factors. Without a one-way valve, the filtered oil may flow back into the cooling mechanism. The filtered oil may still contain some tiny impurities, which, after entering the cooling mechanism, will contaminate the oil inside the cooling mechanism and reduce the cooling effect. The one-way valve can prevent backflow and ensure the cleanliness of the oil inside the cooling mechanism.
[0024] As a preferred embodiment of the above technical solution, such as Figure 1 As shown, four casters 15 are provided at the bottom of the support base plate 1; In this embodiment, when the transformer oil circulation purification mechanism and oil filter need to be moved, the operator can push it manually or apply external force with the help of other traction equipment. At this time, the four moving wheels 15 start to roll. The operator can easily move the equipment to different work sites according to actual needs, improving the convenience of use.
[0025] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A transformer oil circulation purification mechanism and oil filter, characterized in that, include: A support base plate is provided on the ground. A pump support rod is provided on the support base plate. An oil suction pump is provided on the pump support rod. An oil inlet is connected to the input end of the oil suction pump, and an oil delivery pipe is connected to the output end of the oil suction pump. A filtration mechanism, mounted on the supporting base plate, is used to filter and purify the transformer oil. A cooling mechanism, mounted on the supporting base plate, is used to cool the extracted transformer oil. The cooling mechanism is connected to the oil delivery pipe and the filtration mechanism. The filtration mechanism includes: The cylinder bracket is fixedly installed on the support base plate; A filter cartridge is fixedly installed on the cartridge support, and a filter chamber is provided inside the filter cartridge. A connecting pipe is connected to the bottom end of the filter cylinder, and the other end of the connecting pipe is connected to the cooling mechanism; An overflow pipe is vertically installed inside the filter cylinder, and an overflow port is provided at the top of the overflow pipe; Two filter plates are fixedly mounted on the overflow pipe; The top cover is installed on the top of the filter cylinder; The oil outlet pipe is connected to the bottom end of the overflow pipe and is used to discharge the purified transformer oil.
2. The transformer oil circulation purification mechanism and oil filter as described in claim 1, characterized in that, The cooling mechanism includes: The cooling cylinder is fixedly installed on the supporting base plate; A refrigeration housing is fixedly installed at the top of the cooling cylinder. The refrigeration housing is electrically connected to an external power supply. Multiple cooling pipes are provided at the bottom of the refrigeration housing, and each cooling pipe is located inside the cooling cylinder.
3. The transformer oil circulation purification mechanism and oil filter as described in claim 1, characterized in that, The filtration mechanism also includes: The guide slide is fixedly installed on the top cover; A liquid level guide rod is slidably inserted onto the guide slide seat. Two floats are slidably mounted on the liquid level guide rod. The main body of the liquid level guide rod is located inside the filter cylinder. A liquid level indicator is provided at the top of the liquid level guide rod and is located above the top cover.
4. The transformer oil circulation purification mechanism and oil filter as described in claim 3, characterized in that, A sealing gasket is fitted onto the liquid level guide rod, and the sealing gasket is positioned above the guide slide seat.
5. The transformer oil circulation purification mechanism and oil filter as described in claim 3, characterized in that, An oil separator is provided on the inner wall of the filter cartridge. The oil separator is fitted outside the liquid level guide rod. The oil separator has an inlet, which is located above the overflow port of the overflow pipe.
6. The transformer oil circulation purification mechanism and oil filter as described in claim 1, characterized in that, An exhaust port is provided on the top cover.
7. The transformer oil circulation purification mechanism and oil filter as described in claim 1, characterized in that, A one-way valve is connected to the connecting pipe.
8. The transformer oil circulation purification mechanism and oil filter as described in claim 1, characterized in that, The bottom of the support base plate is equipped with four casters.