Oil-oil casing ascending flanged base and oil pressure balance adjusting system and method

Abstract

The invention relates to the technical field of installation of electrical equipment such as transformers, in particular to an oil-oil sleeve ascending flanged base and an oil pressure balance adjusting system and method.The oil-oil sleeve ascending flanged base comprises an ascending flanged base oil chamber, a separation sealing structure, a bypass oil pipe and a pressure valve, the separation sealing structure is arranged on an oil-oil sleeve in a sleeving mode, and one end of the separation sealing structure is connected with the ascending flanged base oil chamber; and the other end is connected with the transformer oil tank body to effectively isolate the ascending flanged base oil chamber from the transformer oil tank body. The independent oil chamber design avoids the problem of insulating oil mixing caused by direct communication of a transformer oil tank and an oil chamber in the ascending flanged base in a traditional structure, so that the risk of mutual influence caused by oil quality degradation on one side is greatly reduced, the insulating performance of transformer oil is guaranteed, the service life of a transformer is prolonged, and the service life of the transformer is prolonged. The operation reliability of the transformer is improved, and the problems of insulating oil separation and oil pressure balance of an existing oil-oil sleeve ascending flanged base and a transformer oil tank are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer-type electrical equipment installation, specifically to an oil-oil casing lift seat, an oil pressure balance adjustment system and a method, and is especially suitable for transformer-type electrical equipment. Background Art

[0002] A transformer is an electromagnetic device that uses the law of electromagnetic induction to convert electrical energy into magnetic energy and then back into electrical energy, achieving voltage conversion. Transformers are crucial for power transmission, distribution, and utilization, meeting the voltage requirements of diverse power demand scenarios. With the continued development of the global economy, electricity demand continues to rise across various industries, and the installed capacity of power systems is also increasing. To achieve longer-distance and more efficient power transmission, transmission voltage levels are constantly increasing. This trend has directly driven the rapid growth of market demand for large-capacity ultra-high voltage transformers. Large-capacity ultra-high voltage transformers play a crucial role in connecting networks with different voltage levels in the power system. They can appropriately convert high-voltage electricity generated by power plants to meet the power needs of different users, ensuring stable operation and efficient power supply of the power system. As transformer capacity and voltage levels increase, the size of large-capacity ultra-high voltage transformers also increases. The transformer oil tank, as the transformer's outer casing, plays a vital role in transformer operation. It not only provides solid mechanical protection for key components within the transformer, such as the core and windings, preventing damage from environmental factors, but also contains the transformer oil. Transformer oil plays a dual, critical role within the oil tank. First, its excellent insulating properties effectively isolate the electrical connections between windings and between the windings and the transformer casing, ensuring electrical safety during normal operation. Second, its excellent heat dissipation properties dissipate heat generated during transformer operation, maintaining a stable internal temperature and thus guaranteeing the transformer's electrical performance and long-term reliable operation. The oil-oil bushing is the primary insulating device outside the transformer tank for voltage ratings of 35kV and above. It is used to safely route the high-voltage or low-voltage winding leads from the transformer to the exterior of the oil tank, while ensuring electrical insulation between the leads and the tank, as well as between the different phase leads, and sealing the tank. The oil-oil bushing riser is an additional device installed on the transformer tank, primarily used to install the transformer's oil-oil bushing and serves as its support structure. In traditional oil-oil bushing riser designs, the transformer tank and the oil chamber within the riser are typically connected directly via a bushing. This design was prevalent in early transformer applications, primarily to simplify structural design and manufacturing processes and reduce production costs.

[0003] However, because the transformer tank and the oil chamber inside the riser are directly connected via a bushing, the insulating oil in both chambers mix. Whenever the riser or cable plug requires maintenance, the insulating oil in both the transformer tank and the riser must be drained simultaneously, a complex and costly operation. Furthermore, the mixed oil circuit can affect each other due to oil quality degradation on one side, and volume expansion or contraction caused by oil temperature fluctuations can easily lead to seal failure and leakage.

[0004] While existing technologies have proposed isolating the oil circuit through mechanical seals, this has not effectively addressed the pressure balance issue caused by oil volume changes, and there is also a lack of independent oil chamber management solutions for the cable connector. Therefore, a solution is urgently needed that can achieve independent oil chambers, dynamically balance pressure, and simplify maintenance. Summary of the Invention

[0005] Aiming at the problems of oil-casing lifting seat and insulating oil separation of transformer oil tank and oil pressure balance existing in the prior art, the present invention provides an oil-casing lifting seat, an oil pressure balance adjustment system and a method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention provides an oil casing lifting seat, comprising an oil chamber of the lifting seat, a separation sealing structure, a bypass oil pipe and a pressure valve; The oil chamber of the lifting seat is covered on the outside of the oil casing; the separation sealing structure is sleeved on the oil casing; one end of the separation sealing structure is connected to the oil chamber of the lifting seat, and the other end is connected to the transformer oil tank body, so as to isolate the oil chamber of the lifting seat from the transformer oil tank body; One end of the bypass oil pipe is connected to the oil chamber of the riser, and the other end is connected to the transformer oil tank body; The pressure valve is arranged on the bypass oil pipe and is used to control the on and off of the bypass oil pipe.

[0007] Optionally, an expansion oil bag is connected to the oil chamber of the lifting seat.

[0008] Optionally, the pressure valve is a pressure valve with bidirectional breathing function.

[0009] Optionally, the separation sealing structure is made of an elastomeric material.

[0010] Optionally, the separation sealing structure includes a separation wall and a buffer diaphragm, the separation wall is an annular structure sleeved on the oil casing, and the buffer diaphragm is an annular structure sleeved on the separation wall.

[0011] Optionally, both sides of the pressure valve are covered with a hydrophobic membrane.

[0012] Optionally, the oil chamber of the riser seat and the transformer oil tank body are both connected to the separation sealing structure through a flange, and a separation sealing quick-release structure is provided inside the flange for quick installation and removal of the separation sealing structure.

[0013] Optionally, the separation seal quick-release structure includes a positioning cylinder connected to the inner wall of the flange, and a plurality of L-shaped mechanical claws are hinged along the circumference of the positioning cylinder.

[0014] A pressure balance regulating system for the above-mentioned oil casing lifting seat includes a PLC control unit and a plurality of sensors arranged on both sides of the separation sealing structure for monitoring the pressure on both sides of the separation sealing structure; the sensors and pressure valves are electrically connected to the PLC control unit.

[0015] The present invention provides a method for performing pressure balance adjustment on an oil casing lifting seat using the above-mentioned pressure balance adjustment system, comprising: Collect pressure data on both sides of the separation seal structure and compare them; When there is a difference in the pressure data on both sides of the separation sealing structure, the pressure valve is controlled to open, the bypass oil pipe is connected, and pressure balance adjustment is performed until the pressure data on both sides of the separation sealing structure are equal, completing the pressure balance adjustment.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an oil-oil casing lift, comprising an oil chamber, a separating sealing structure, a bypass oil pipe, and a pressure valve. By placing the separating sealing structure over the oil casing, with one end connected to the oil chamber of the lift and the other end connected to the transformer oil tank, the oil chamber of the lift is effectively isolated from the transformer oil tank. This independent oil chamber design avoids the problem of insulating oil mixing caused by direct connection between the transformer oil tank and the oil chamber inside the lift in conventional structures, thereby greatly reducing the risk of mutual influence due to oil quality deterioration on one side, ensuring the insulation performance of the transformer oil, and helping to extend the service life of the transformer and improve its operational reliability. When the oil chamber of the lift or related components require maintenance, since the oil chamber of the lift is isolated from the transformer oil tank by the separating sealing structure, only the insulating oil in the oil chamber of the lift needs to be drained, without having to drain the insulating oil in the transformer oil tank at the same time. This significantly reduces the workload of draining and filling oil, shortens maintenance time, and reduces maintenance costs. At the same time, it reduces the chance of impurities and moisture being introduced by frequent draining and filling operations, further ensuring the quality of the transformer oil. One end of the bypass oil pipe is connected to the oil chamber of the riser seat, and the other end is connected to the transformer oil tank body. The pressure valve is set on the bypass oil pipe to control the on and off of the bypass oil pipe. During the operation of the transformer, when the pressure in the oil chamber of the riser seat is too high or too low, the pressure valve can open or close the bypass oil pipe according to the pressure situation, so that an appropriate amount of air is exchanged between the oil chamber of the riser seat and the transformer oil tank body, thereby dynamically balancing the pressure. This effectively avoids the sealing failure and leakage problems caused by excessive pressure fluctuations, and improves the sealing performance and operational safety of the transformer. The oil casing riser realizes multiple functions such as oil chamber independence, dynamic pressure balance and simplified maintenance through the synergistic effect of the separated sealing structure, bypass oil pipe and pressure valve, thereby improving the overall performance and stability of the transformer.

[0017] An expansion oil bladder is connected to the riser seat oil chamber. During transformer operation, oil temperature fluctuates with load and ambient temperature, causing the insulating oil to expand or contract. When the riser seat oil chamber is connected to the expansion oil bladder, when the oil temperature rises and the oil volume expands, excess insulating oil will enter the bladder, preventing a sharp increase in pressure within the riser seat oil chamber. When the oil temperature drops and the oil volume contracts, the insulating oil in the expansion oil bladder will flow back into the riser seat oil chamber, preventing excessive pressure drop. This buffering effect maintains stable pressure within the riser seat oil chamber, reduces the impact of pressure fluctuations on seals and the transformer structure, reduces the risk of seal failure and leakage, and improves the operational reliability and safety of the transformer.

[0018] The pressure valve is a two-way breathing valve that automatically adjusts its on / off state based on pressure changes within the lift seat's oil chamber. When pressure within the oil chamber increases, the valve opens, allowing gas to escape and preventing damage to the chamber due to overpressure. When pressure within the oil chamber decreases, the valve also opens, allowing outside gas to enter and preventing deformation and leakage of the oil chamber due to negative pressure.

[0019] The material of the separation sealing structure is an elastomeric material, which has good flexibility and deformability. It can automatically adapt to these dimensional deviations and structural changes caused by thermal expansion, always fit closely to the contact surface, fill small gaps, ensure reliable isolation between the oil chamber of the riser and the transformer tank body, and effectively prevent insulating oil mixing and leakage.

[0020] The separation seal structure comprises a separation wall and a buffer diaphragm. The separation wall is an annular structure that sleeves over the oil casing, and the buffer diaphragm is an annular structure that sleeves over the separation wall. This detachable, layered separation seal structure effectively separates the insulating oil in the transformer tank from the insulating oil in the riser oil chamber. The buffer diaphragm further enhances the sealing and reliability of the separation wall during installation and extrusion, while also facilitating disassembly of the separation seal structure.

[0021] The pressure valve is covered with hydrophobic membranes on both sides. The provision of the hydrophobic membranes can only allow gas exchange during the pressure balance adjustment process, thereby further avoiding mixing of insulating oil.

[0022] The oil chamber of the riser and the transformer tank body are both connected to the separation seal structure via flanges. A quick-release separation seal mechanism is located within the flange for rapid installation and removal. The quick-release separation seal mechanism includes a positioning cylinder connected to the inner wall of the flange, with a number of L-shaped mechanical claws hingedly attached along the circumference of the positioning cylinder. During disassembly and maintenance, the oil casing is passed through the positioning cylinder, the ends of the L-shaped mechanical claws are inserted between the separation seal structure and the oil casing, and the flange is rotated to cause the L-shaped mechanical claws to prop up the separation seal structure, allowing for smooth removal of the oil casing.

[0023] A pressure balancing and regulating system for the oil-casing riser described above includes a PLC control unit and a plurality of sensors disposed on both sides of a separating and sealing structure for monitoring the pressure on both sides of the separating and sealing structure; the sensors and pressure valves are both electrically connected to the PLC control unit. By disposing a plurality of sensors on both sides of the separating and sealing structure, the pressure balancing and regulating system can monitor pressure changes between the riser oil chamber and the transformer oil tank body in all directions and at multiple angles. The sensors are electrically connected to the PLC control unit. Once a pressure change is detected, the data is immediately transmitted to the PLC control unit. The PLC control unit rapidly analyzes the pressure data and makes decisions based on a preset pressure threshold and regulation algorithm, controlling the pressure valve to perform corresponding opening or closing operations, thereby achieving rapid pressure balancing and regulating, and effectively avoiding the adverse effects of excessive or low pressure on the transformer. The pressure balancing and regulating system implements automated control, eliminating the need for manual attention to pressure changes and manual adjustments, greatly reducing the intensity and difficulty of manual operations and reducing regulation errors caused by human factors.

[0024] A method for pressure balancing and regulating the oil casing riser using the above-mentioned pressure balancing and regulating system. The method collects and compares the pressure data on both sides of the separated sealing structure; then, based on the comparison difference, controls the opening of the pressure valve to connect the bypass oil pipe to achieve pressure balancing and regulating. The method can make timely response adjustments based on the real-time collected pressure data to ensure the reliability and stability of the pressure balancing and regulating system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of an oil casing lifting seat of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the separation and sealing structure of the present invention.

[0027] Figure 3 This is a structural diagram of the separation sealing quick-release structure of the present invention.

[0028] Figure 4 This is a structural diagram of the pressure balance adjustment system for the above-mentioned oil casing lifting seat of the present invention.

[0029] Figure 5 The present invention is a flow chart of a method for performing pressure balance adjustment on an oil casing lifting seat using the above-mentioned pressure balance adjustment system.

[0030] Among them, 1-transformer oil tank body, 2-oil casing, 3-elevated seat oil chamber, 4-, 5-pressure valve, 6-, 7-expansion oil bag, 8-partition wall, 9-buffer diaphragm, 10-bypass oil pipe, 11-partition seal quick-release structure, 12-positioning cylinder, 13-L-type mechanical claw. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "horizontal," "inner," etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is typically placed when in use. These terms are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] The present invention will be further described in detail below with reference to specific embodiments, which are intended to explain the present invention rather than to limit it.

[0038] In view of the problems that the oil tank of the existing oil-oil bushing transformer and the oil chamber inside the riser are usually directly connected through the bushing, resulting in mixing of the insulating oil in the two, causing maintenance difficulties, oil quality contamination risks, and easy leakage caused by seal failure and pressure balance adjustment, the present invention provides an oil-oil bushing riser, an oil pressure balance adjustment system and method, and the specific embodiments are as follows: Example 1 See also Figure 1 , an oil casing lifting seat, characterized in that it includes a lifting seat oil chamber 3, a separation sealing structure, a bypass oil pipe 10 and a pressure valve 5; The oil chamber 3 of the lifting seat is covered on the outside of the oil casing 2. The oil chamber 3 of the lifting seat is connected to an expansion oil bag 7. The expansion oil bag 7 is a corrugated structure and is connected to the oil chamber 3 of the lifting seat through a flexible connecting pipe. It is used to absorb the volume change of the oil and prevent the pressure instability caused by the volume change of the oil due to factors such as temperature. The material of the separation sealing structure is an elastomer material and is sleeved on the oil casing 2. One end of the separation sealing structure is connected to the lifting seat oil chamber 3, and the other end is connected to the transformer tank body 1, so as to isolate the lifting seat oil chamber 3 from the transformer tank body 1. One end of the bypass oil pipe 10 is connected to the oil chamber 3 of the riser seat, and the other end is connected to the transformer oil tank body 1; The pressure valve 5 is provided on the bypass oil pipe 10 and is used to control the on-off of the bypass oil pipe 10 .

[0039] Preferably, the pressure valve 5 is a pressure valve with a bidirectional breathing function, and is covered with a hydrophobic membrane on both sides. When the pressure on both sides is unbalanced, it is opened to balance the pressure. The hydrophobic membrane on both sides only allows gas exchange to achieve a balanced pressure effect.

[0040] The oil-oil casing lift seat effectively isolates the lift seat oil chamber 3 from the transformer tank body 1 by placing a separation sealing structure on the oil-oil casing 2, with one end connected to the lift seat oil chamber 3 and the other end connected to the transformer tank body 1. This independent oil chamber design avoids the problem of insulating oil mixing caused by the direct connection between the transformer tank and the oil chamber inside the lift seat in the traditional structure, thereby greatly reducing the risk of mutual influence due to oil quality deterioration on one side, ensuring the insulation performance of the transformer oil, helping to extend the service life of the transformer and improve the operational reliability of the transformer. When the lift seat oil chamber 3 or related components need to be repaired, since the lift seat oil chamber 3 is isolated from the transformer tank body 1 by the separation sealing structure, it is only necessary to drain the insulating oil in the lift seat oil chamber 3 without draining the insulating oil in the transformer tank body 1 at the same time. This significantly reduces the workload of draining and filling oil, shortens maintenance time, and reduces maintenance costs. At the same time, it reduces the chance of impurities and moisture being introduced by frequent draining and filling operations, further ensuring the quality of the transformer oil. One end of the bypass oil pipe 10 is connected to the riser oil chamber 3, and the other end is connected to the transformer oil tank body 1. The pressure valve 5 is set on the bypass oil pipe to control the on and off of the bypass oil pipe 10. During the operation of the transformer, when the pressure in the riser oil chamber 3 is too high or too low, the pressure valve 5 can open or close the bypass oil pipe 10 according to the pressure situation, so that an appropriate amount of air is exchanged between the riser oil chamber 3 and the transformer oil tank body 1, thereby dynamically balancing the pressure. This effectively avoids the sealing failure and leakage problems caused by excessive pressure fluctuations, and improves the sealing performance and operational safety of the transformer. The oil casing riser realizes multiple functions such as oil chamber independence, dynamic pressure balance and simplified maintenance through the synergistic effect of the separated sealing structure, bypass oil pipe and pressure valve, thereby improving the overall performance and stability of the transformer.

[0041] Example 2 See also Figure 1 , an oil casing lifting seat, characterized in that it includes a lifting seat oil chamber 3, a separation sealing structure, a bypass oil pipe 10 and a pressure valve 5; The lifting seat oil chamber 3 is covered on the outside of the oil casing 2, one end of the separation sealing structure is connected to the lifting seat oil chamber 3, and the other end is connected to the transformer oil tank body 1, which is used to isolate the lifting seat oil chamber 3 from the transformer oil tank body 1; the lifting seat oil chamber 3 is connected to the expansion oil bag 7; the material of the separation sealing structure is an elastomeric material, and the separation sealing structure includes a separation wall 8 and a buffer diaphragm 9, the separation wall 8 is an annular structure sleeved on the oil casing 2, and the buffer diaphragm 9 is an annular structure sleeved on the separation wall 8, preferably, the material of the buffer diaphragm 9 is silicone.

[0042] One end of the bypass oil pipe 10 is connected to the oil chamber 3 of the riser seat, and the other end is connected to the transformer oil tank body 1; The pressure valve 5 is provided on the bypass oil pipe 10 and is used to control the on-off of the bypass oil pipe 10 .

[0043] The pressure valve 5 is a pressure valve with a bidirectional breathing function, and is covered with a hydrophobic membrane on both sides. When the pressure on both sides is unbalanced, it is opened to balance the pressure. The hydrophobic membrane on both sides only allows gas exchange to achieve a balanced pressure effect.

[0044] Example 3 See also Figure 1 , an oil casing lifting seat, characterized in that it includes a lifting seat oil chamber 3, a separation sealing structure, a bypass oil pipe 10 and a pressure valve 5; The oil chamber 3 of the lifting seat is covered on the outside of the oil casing 2. One end of the separation sealing structure is connected to the oil chamber 3 of the lifting seat, and the other end is connected to the transformer tank body 1, so as to isolate the oil chamber 3 of the lifting seat from the transformer tank body 1. An expansion oil bag 7 is connected to the oil chamber 3 of the lifting seat. The material of the separation sealing structure is an elastomer material. Figure 2 The separation sealing structure includes a separation wall 8 and a buffer diaphragm 9. The separation wall 8 is an annular structure sleeved on the oil casing 2, and the buffer diaphragm 9 is an annular structure sleeved on the separation wall 8. Preferably, the buffer diaphragm 9 is made of silicone.

[0045] One end of the bypass oil pipe 10 is connected to the oil chamber 3 of the riser seat, and the other end is connected to the transformer oil tank body 1; The pressure valve 5 is provided on the bypass oil pipe 10 and is used to control the on-off of the bypass oil pipe 10 .

[0046] The pressure valve 5 is a pressure valve with a bidirectional breathing function, and is covered with a hydrophobic membrane on both sides. When the pressure on both sides is unbalanced, it is opened to balance the pressure. The hydrophobic membrane on both sides only allows gas exchange to achieve a balanced pressure effect.

[0047] The oil chamber of the raised seat 3 and the transformer tank body 1 are connected to the separation sealing structure through a flange. A separation sealing quick-release structure 11 is provided inside the flange for quick installation and removal of the separation sealing structure. Figure 3 The separation sealing quick-disassembly structure 11 includes a positioning cylinder 12 connected to the inner wall of the flange, and a plurality of L-shaped mechanical claws 13 are hinged along the circumference of the positioning cylinder 12. The separation sealing quick-disassembly structure 11 is made of insulating material.

[0048] When quickly disassembling the oil casing 2, pass the oil casing 2 through the positioning tube 12, insert the end of the L-shaped mechanical claw 13 between the partition wall 8 and the oil casing 2, rotate the flange so that the L-shaped mechanical claw supports the partition wall 8, and smoothly take out the oil casing 2.

[0049] Example 4 See also Figure 4 The present invention also provides a pressure balancing and regulating system for the oil casing lifting seat of the above embodiment, including a PLC control unit and a plurality of sensors 6 arranged on both sides of the separation sealing structure for monitoring the pressure on both sides of the separation sealing structure; the sensors 6 and the pressure valve 5 are both electrically connected to the PLC control unit.

[0050] By installing a number of sensors 6 on both sides of the separating seal structure, this pressure balance and regulation system can monitor pressure changes between the riser oil chamber 3 and the transformer oil tank body 1 from all directions and angles. The sensors 6 are electrically connected to the PLC control unit. Once a pressure change is detected, the data is immediately transmitted to the PLC control unit. The PLC control unit quickly analyzes the pressure data and makes a decision based on the preset pressure threshold 5 value and the regulation algorithm, controlling the pressure valve 5 to open or close accordingly, achieving rapid pressure balance and regulation, effectively avoiding the adverse effects of excessive or insufficient pressure on the transformer. This pressure balance and regulation system achieves automated control, eliminating the need for manual monitoring of pressure changes and adjustments, greatly reducing the intensity and difficulty of manual operation and reducing adjustment errors caused by human factors.

[0051] Example 5 See also Figure 5 The present invention also provides a method for performing pressure balance adjustment on an oil casing lifting seat using the above-mentioned pressure balance adjustment system, comprising: S1: Collect and compare pressure data on both sides of the separation seal structure; S2: When there is a difference in the pressure data on both sides of the separation sealing structure, the pressure valve 5 is controlled to open, so that the bypass oil pipe 10 is connected, and pressure balance adjustment is performed until the pressure data on both sides of the separation sealing structure are equal, and the pressure balance adjustment is completed.

[0052] The method can make timely response adjustments based on the real-time collected pressure data to ensure the reliability and stability of the pressure balance regulation system.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to impose any limitation on the technical solution of the present invention. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can also be subjected to several simple modifications and replacements, and these modifications and replacements are also within the scope of protection covered by the claims.

Claims

1. An oil casing lifting seat, characterized in that: It includes an elevated seat oil chamber, a separation sealing structure, a bypass oil pipe and a pressure valve; The oil chamber of the lifting seat is covered on the outside of the oil casing; the separation sealing structure is sleeved on the oil casing; one end of the separation sealing structure is connected to the oil chamber of the lifting seat, and the other end is connected to the transformer oil tank body, so as to isolate the oil chamber of the lifting seat from the transformer oil tank body; One end of the bypass oil pipe is connected to the oil chamber of the riser, and the other end is connected to the transformer oil tank body; The pressure valve is arranged on the bypass oil pipe and is used to control the on and off of the bypass oil pipe.

2. The oil casing lifting seat according to claim 1, characterized in that: The oil chamber of the lifting seat is connected with an expansion oil bag.

3. The oil casing lifting seat according to claim 1, characterized in that: The pressure valve is a pressure valve with a bidirectional breathing function.

4. The oil casing lifting seat according to claim 1, characterized in that: The material of the separation sealing structure is an elastomer material.

5. The oil casing lifting seat according to claim 1, characterized in that: The separation sealing structure includes a separation wall and a buffer diaphragm. The separation wall is an annular structure sleeved on the oil casing, and the buffer diaphragm is an annular structure sleeved on the separation wall.

6. The oil casing lifting seat according to claim 1, characterized in that: Both sides of the pressure valve are covered with hydrophobic films.

7. The oil casing lifting seat according to claim 1, characterized in that: The oil chamber of the raised seat and the transformer oil tank body are both connected to the separation sealing structure through flanges. A separation sealing quick-release structure is provided inside the flange for rapid installation and removal of the separation sealing structure.

8. The oil casing lifting seat according to claim 7, characterized in that: The separation seal quick-release structure comprises a positioning cylinder connected to the inner wall of the flange, and a plurality of L-shaped mechanical claws are hinged along the circumference of the positioning cylinder.

9. A pressure balance regulating system for the oil casing lifting seat according to any one of claims 1 to 8, characterized in that: It comprises a PLC control unit and a plurality of sensors arranged on both sides of the separation sealing structure for monitoring the pressure on both sides of the separation sealing structure; the sensors and the pressure valve are both electrically connected to the PLC control unit.

10. A method for pressure balancing and regulating an oil casing lifting seat using the pressure balancing and regulating system according to claim 9, characterized in that: include: Collect pressure data on both sides of the separation seal structure and compare them; When there is a difference in the pressure data on both sides of the separation sealing structure, the pressure valve is controlled to open, the bypass oil pipe is connected, and pressure balance adjustment is performed until the pressure data on both sides of the separation sealing structure are equal, completing the pressure balance adjustment.

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