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CN-122025362-A - Capsule oil storage cabinet and heat dissipation integrated device of oil immersed transformer

CN122025362ACN 122025362 ACN122025362 ACN 122025362ACN-122025362-A

Abstract

The invention relates to the technical field of transformers, and discloses a capsule oil storage cabinet and heat dissipation integrated device of an oil immersed transformer, which comprises an oil immersed transformer, wherein an oil conservator is arranged on the side surface of the oil immersed transformer, an emergency protection mechanism is arranged in the oil conservator, and a control system is arranged in the oil immersed transformer; meanwhile, the emergency protection mechanism wraps the outer surface of the air bag and guides oil leakage to the recovery tank when the air bag is damaged, physical isolation and leakage-free collection are achieved, the intelligent cooling fan is matched for forced full-speed operation to delay oil temperature rising, safe operation of key equipment such as a large-scale direct current converter transformer is further guaranteed, and the intelligent direct current converter transformer is particularly suitable for high-reliability application scenes such as an intelligent large-scale direct current converter transformer.

Inventors

  • LI XIYU
  • QIU GUOZHENG
  • LI CHENGLUN

Assignees

  • 四川欣捷能电力有限责任公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (9)

  1. 1. The utility model provides a capsule oil conservator and heat dissipation integrated device of oil-immersed transformer, includes oil-immersed transformer (1), the side of oil-immersed transformer (1) is provided with conservator (4), the intermediate zone at conservator (4) top runs through and installs conveyer pipe (401), rubber gasbag (402) are installed to the bottom of wherein conveyer pipe (401), a serial communication port, the internally mounted of conservator (4) has emergent protection mechanism (7), the inside of oil-immersed transformer (1) is provided with control system, liquid sensor (10) are installed to the medial surface of rubber gasbag (402) bottom for gather the liquid level data of rubber gasbag (402) inside and transmit to control system, humidity sensor (9) are installed to the medial surface at rubber gasbag (402) top for gather the inside humidity data of rubber gasbag (402), and control system receives this humidity data; A three-way switching valve (5) is arranged at the top of the conveying pipe (401), and a main and standby automatic switching breathing mechanism (6) is arranged outside the three-way switching valve (5); the control system is configured to: When the liquid level data judges that liquid is generated in the rubber air bag (402), the liquid level data judges that the rubber air bag (402) is damaged, and controls the emergency protection mechanism (7) to start; When the humidity data judges that the humidity inside the rubber air bag (402) is abnormal and no liquid is in the rubber air bag according to the liquid level data, the main and standby automatic switching breathing mechanisms (6) are controlled to switch breathing components preferentially, if the humidity after switching is normal, the breathing mechanisms (6) are judged to leak, and if the humidity after switching is still continuous, the rubber air bag (402) is judged to be damaged and the emergency protection mechanism (7) is controlled to be started; the emergency protection mechanism (7) is used for coating the outer surface of the rubber air bag (402) when the emergency protection mechanism is started so as to secondarily protect the damaged part.
  2. 2. The integrated capsule oil storage cabinet and heat dissipation device according to claim 1, wherein the emergency protection mechanism (7) comprises two groups of protection cabins (701), the two groups of protection cabins (701) are respectively installed on the inner side surfaces of two ends of the oil conservator (4), sliding grooves (706) are respectively installed at the top of each group of protection cabins (701), three groups of sliding blocks (710) are movably sleeved in the sliding grooves (706), screw rods (707) are connected to the inner threads of one group of sliding blocks (710) far away from the corresponding protection cabin (701), a servo motor (703) is installed at one end, close to the protection cabin (701), of each screw rod (707) and used for driving the screw rods (707) to rotate, the same limiting component is installed at the bottom of each three groups of sliding blocks (710), and a folding type flexible coating layer (709) is arranged inside each limiting component.
  3. 3. The integrated capsule oil storage cabinet and heat dissipation device according to claim 2, wherein the main and standby automatic switching breathing mechanism (6) comprises a main breathing component (601) and a standby breathing component (602), and two groups of input ends are arranged at one end of the three-way switching valve (5) far away from the position of the conveying pipe (401), wherein the main breathing component (601) and the standby breathing component (602) are respectively correspondingly arranged on the two groups of input ends; when the control system judges that the rubber air bag (402) is damaged, two groups of servo motors (703) are controlled to start to drive the corresponding sliding blocks (710) and the limiting components to move to opposite positions until the two groups of limiting components are contacted with each other, at the moment, two groups of folding flexible coating layers (709) are coated on the outer surface of the rubber air bag (402), and the damaged part of the rubber air bag (402) is secondarily protected; The limit assembly comprises a first limit ring (704), a second limit ring (705) and a third limit ring (708).
  4. 4. The integrated capsule oil conservator and heat sink device of claim 3, wherein the first stop collar (704), the second stop collar (705) and the third stop collar (708) are sequentially mounted at the bottoms of three adjacent groups of sliding blocks (710), and the three groups of sliding blocks are sequentially arranged along the direction away from the corresponding protection cabin (701), wherein the first stop collar (704) is closest to the protection cabin (701), and the third stop collar (708) is furthest from the protection cabin (701).
  5. 5. The integrated capsule oil conservator and heat dissipation device of claim 4, wherein multiple groups of elastic components (8) are equidistantly arranged on the inner side surfaces of the first limiting ring (704), the second limiting ring (705) and the third limiting ring (708), and the elastic components (8) comprise hollow plates (801), pushing plates (804) and springs (803).
  6. 6. The integrated capsule oil conservator and heat sink device of claim 5, wherein the hollow plate (801) is mounted on the inner side surface of the corresponding first limiting ring (704), second limiting ring (705) and third limiting ring (708), one end of the push plate (804) is slidably matched in a buffer groove (802) formed in the hollow plate (801), the other end of the push plate is fixedly connected with the outer side surface of the folding flexible coating layer (709), and the spring (803) is arranged between the hollow plate (801) and the push plate (804) and is used for applying elastic force to the push plate (804).
  7. 7. The integrated capsule oil storage tank and heat dissipation device according to claim 6, wherein one sides of the two groups of protection cabins (701) close to the rubber air bags (402) are hinged with first limiting rings (704), torsion spring assemblies are arranged between each group of the first limiting rings (704) and the protection cabins (701), and each group of the first limiting rings (704) is driven by the torsion spring assemblies to be attached to the opening end face of the corresponding protection cabin (701) so as to prevent transformer oil from entering the protection cabin (701) in the non-working state.
  8. 8. The integrated capsule oil storage cabinet and heat dissipation device according to claim 1, wherein an oil recovery tank (702) is installed on the outer side of one end of the conservator (4), an input pipeline is installed on the oil recovery tank (702) in a penetrating mode, one end, far away from the oil recovery tank (702), of the input pipeline is communicated to the inner side of the bottom of the folding flexible coating layer (709), and the installation position of the oil recovery tank (702) is lower than that of the folding flexible coating layer (709) and is used for collecting residual transformer oil inside the folding flexible coating layer (709) through the input pipeline.
  9. 9. The capsule oil conservator and heat dissipation integrated device of claim 1, wherein the oil radiators (2) are mounted at two ends of the oil immersed transformer (1), the intelligent heat dissipation fans (3) are mounted at the bottoms of each group of oil radiators (2), and when the control system judges that the rubber air bags (402) are damaged, the intelligent heat dissipation fans (3) are controlled to increase power to a full-speed running state for strengthening heat dissipation and delaying the rising speed of the transformer oil temperature, so that a time window is striven for overhauling the rubber air bags (402).

Description

Capsule oil storage cabinet and heat dissipation integrated device of oil immersed transformer Technical Field The invention relates to the technical field of transformers, in particular to a capsule oil storage cabinet and heat dissipation integrated device of an oil immersed transformer, which is particularly suitable for intelligent large-scale direct current converter transformers. Background In the operation process of the oil immersed transformer, insulating oil expands or contracts along with temperature change, so as to solve the problem, the existing large transformer generally adopts a capsule type oil storage cabinet, the volume change of the oil is compensated by the expansion and contraction of a built-in capsule, and meanwhile, the oil is isolated from air, so that the oil quality is prevented from deteriorating, however, the existing capsule type oil storage cabinet has two main problems in practical application: 1. The capsule is likely to be damaged due to aging, mechanical damage and the like in long-term operation, the breathing tube is also likely to leak due to sealing failure or desiccant saturation, the capsule is mainly judged by manual inspection oil level gauges or regular oil extraction tests at present, the capsule is difficult to timely find in the early stage of failure, whether the capsule is damaged or the breathing tube leaks cannot be distinguished, and difficulties are brought to failure positioning and processing; 2. The emergency treatment mechanism is lacking, namely, once a capsule is broken, transformer oil can directly contact with air to accelerate oil oxidation and wetting, if the oil cannot be treated in time, the insulation performance is possibly reduced, even equipment is possibly failed, and in the existing oil storage cabinet structure, no physical isolation measures aiming at the broken capsule are adopted, and a standby passage cannot be provided when a respiratory system fails; for key equipment such as an intelligent large-scale direct current converter transformer, the operation reliability requirement is extremely high, and any oil degradation or hidden leakage can cause serious consequences; Therefore, there is a need for an integrated device for capsule oil tank and heat dissipation of oil immersed transformer, which is used for solving the above-mentioned technical problems. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a capsule oil storage cabinet and a heat dissipation integrated device of an oil immersed transformer, which are used for solving the problems in the background art. The capsule oil storage cabinet and the heat dissipation integrated device of the oil immersed transformer comprise the oil immersed transformer, wherein an oil conservator is arranged on the side face of the oil immersed transformer, a conveying pipe is arranged in the middle area of the top of the oil conservator in a penetrating mode, a rubber air bag is arranged at the bottom of the conveying pipe, an emergency protection mechanism is arranged in the oil conservator, a control system is arranged in the oil immersed transformer, and a liquid sensor is arranged on the inner side face of the bottom of the rubber air bag and used for collecting liquid level data in the rubber air bag and transmitting the liquid level data to the control system so as to judge whether the rubber air bag is damaged or not; The emergency protection mechanism comprises two groups of protection cabins, the two groups of protection cabins are respectively arranged on the inner side surfaces of the two ends of the conservator, sliding grooves are respectively arranged at the top of each group of protection cabins, three groups of sliding blocks are movably sleeved in the sliding grooves, screw rods are connected with the inner threads of one group of sliding blocks far away from the corresponding protection cabins, servo motors are arranged at one ends of the screw rods, which are close to the positions of the protection cabins, and used for driving the screw rods to rotate, the bottoms of the three groups of sliding blocks are provided with the same limiting assembly, and folding type flexible coating layers are arranged in the limiting assembly; when the control system judges that the rubber air bag is damaged, two groups of servo motors are controlled to start, the corresponding sliding blocks and the limiting assemblies are driven to move towards the opposite side until the two groups of limiting assemblies are in contact with each other, and at the moment, the two groups of folding flexible coating layers are coated on the outer surface of the rubber air bag to secondarily protect the damaged part of the rubber air bag. Preferably, a three-way switching valve is arranged at the top of the conveying pipe, and a main and standby automatic switching breathing mechanism is arranged outside the three-way switching valve; The automatic switching