A dehumidification component for power transformer and dehumidification method thereof

Abstract

The present invention relates to the technical field of dehumidification of power transformers, and specifically to a dehumidification component for power transformers and a dehumidification method thereof, comprising a power transformer body and an oil tank breather arranged inside the power transformer body, wherein a placement bin is arranged on one side of the power transformer body, and one end of the oil tank breather is located inside the placement bin, a partition plate is arranged inside the placement bin, and a conveying component is arranged on one side of the partition plate, an air intake component is arranged on the conveying component, and a compression adjustment component is arranged inside the placement bin. The present invention can provide separate flow channels for moisture in the air and hot air discharged from the inside of the oil tank, thereby avoiding mixing between cold and hot air when gas exchange is performed inside the transformer, resulting in that the outside air cannot provide sufficient cooling effect when entering the inside, affecting the final cooling effect on the internal environment of the oil tank, while improving the heat dissipation effect on the surrounding environment of the transformer.

Description

Technical Field

[0001] The invention relates to the technical field of dehumidification of power transformers, in particular to a dehumidification component for a power transformer and a dehumidification method thereof. Background Art

[0002] Dehumidification of power transformers refers to a series of measures to remove or reduce the humidity of moisture or water inside the power transformer or in the surrounding environment. This process can enable the power transformer to operate normally, extend its service life, and improve the stability and safety of the power system.

[0003] For example, an automatic dehumidification device for transformer gas with publication number CN118231102A realizes different functions by setting up two moisture absorption modules to dehumidify the incoming and outgoing gases according to the changes between pipelines. It dehumidifies by condensing moisture to form water droplets and then heating and drying them, thus eliminating the tedious steps of replacing silica gel and saving time and effort.

[0004] When the above device is in use, the water formed by condensation of moisture is heated and dried to form water vapor for discharge. In this process, the functions of the two desiccant modules are alternately changed. As a result, when the desiccant module is in the drying function to dry the internal water into gas, some gas will remain inside and cannot be completely discharged. As a result, when the desiccant module is switched to the dehumidification function, this part of the gas directly enters the transformer through the pipeline without being dehumidified, rapidly reducing the dielectric strength of the oil inside the tank and increasing the conductivity of the oil, thereby reducing the insulation performance of the transformer. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the present invention provides a dehumidification component and a dehumidification method for a power transformer, which has separate flow channels for moisture in the air and hot air exhausted from the inside of the oil tank, thereby avoiding mixing of cold and hot air during gas exchange inside the transformer, resulting in the outside air being unable to provide sufficient cooling effect when entering the interior, and at the same time improving the heat dissipation effect on the surrounding environment of the transformer.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dehumidification component for a power transformer and a dehumidification method thereof, comprising a power transformer body and an oil tank breather arranged inside the power transformer body, and the oil tank breather and the oil tank inside the power transformer body are interconnected, a placement bin is arranged on one side of the power transformer body, and one end of the oil tank breather is located inside the placement bin, a partition plate is arranged inside the placement bin, and a conveying assembly is arranged on one side of the partition plate, the conveying assembly is used to convey excess gas to the outside when the oil inside the oil tank expands, an air intake assembly is arranged on the conveying assembly, the air intake assembly is used to convey air when negative pressure is formed inside the oil tank and external air needs to be input to form a balance, a compression adjustment assembly is arranged inside the placement bin, the compression adjustment assembly is used to open a channel to allow gas to pass when gas needs to be sent to the outside, and to allow gas to be conveyed from the air intake assembly when it is not needed;

[0008] The compression adjustment assembly includes a rubber pad disposed inside the placement bin, a sliding rod disposed on the side of the rubber pad away from the tank breather, a sealing pad disposed on the end of the sliding rod away from the rubber pad, a first spring disposed outside the sliding rod, and a fixing plate disposed inside the placement bin;

[0009] The partition plate is provided with a vent hole, the placement bin is provided with a push rod, the placement bin is symmetrically provided with a T-shaped plate, and the T-shaped plate is provided with a filter bin, a conical inlet is provided on one side of the filter bin, and the filter bin is symmetrically provided with a T-shaped groove, and the T-shaped groove and the T-shaped plate are engaged and slidable;

[0010] The conveying assembly includes a fixed cylinder arranged on the partition plate, a piston plate movably arranged inside the fixed cylinder, a blocking ring plate arranged on the side of the piston plate away from the partition plate, a spiral ring arranged on the side of the piston plate close to the blocking ring plate, a placement cylinder arranged inside the spiral ring, a piston arranged on a placement base at one end of the placement cylinder away from the spiral ring, and the placement base is fixedly connected to the fixed cylinder, and also includes a torque spring arranged inside the placement cylinder;

[0011] An air inlet is arranged in an array on the fixed cylinder, a clamping block is arranged on the placement cylinder, and the clamping block and the spiral ring are clamped and slid, a ventilation fan blade is arranged on the placement bin, an opening and closing component is arranged inside the placement bin, and the opening and closing component is used to open and close the ventilation fan blade, and a collecting component is arranged inside the placement bin, and the collecting component is used to discharge the collected water to the outside of the power transformer body;

[0012] The air intake assembly includes an air intake square tube arranged on a partition plate, a conical channel arranged on the air intake square tube, and the conical channel is fixedly connected between one end away from the air intake square tube and a fixed tube, and also includes a cross bracket arranged inside the conical channel, a telescopic rod arranged on the side of the cross bracket away from the air intake square tube, a T-shaped piston arranged on the side of the telescopic rod away from the cross bracket, and a closing plate symmetrically arranged on the side of the air intake square tube close to the tank breather, and the closing plate can only rotate in one direction.

[0013] Preferably, the collecting assembly includes a collecting bin arranged inside the placing bin, a support plate arranged inside the collecting bin, a rotating rod movably arranged on the support plate, a Z-shaped rod arranged on the collecting bin, a lifting rod movably arranged on a side of the rotating rod away from the support plate, a cavity seat movably arranged on the lifting rod, an elastic pad arranged on one end of the lifting rod away from the rotating rod, and a bellows arranged on the collecting bin.

[0014] Preferably, support rods are symmetrically arranged on the collecting bin, and the support rods are fixedly connected to the placement bin at one side away from the collecting bin, a second spring is sleeved on the outside of the support rods, and a positioning rod is arranged on the collecting bin.

[0015] Preferably, the opening and closing assembly includes a fixed rod arranged on the ventilation fan blade, a lifting plate movably arranged on the side of the fixed rod away from the ventilation fan blade, a circular clamping plate arranged on one end of the lifting plate close to the fixed plate, an extension plate symmetrically arranged on the lifting plate, a spiral ring plate arranged on the extension plate, and a fixed bottom rod symmetrically arranged inside the placement bin.

[0016] Preferably, a matching tube is provided on the fixed bottom rod, a sliding plate is provided on the matching tube, and an I-shaped rod is provided on the sliding plate.

[0017] The present invention also provides a method for using a dehumidification component for an electric transformer, the purpose of which is to provide a method for transporting gas through a separate channel when exchanging gas inside the electric transformer, thereby avoiding direct contact between cold and hot air, causing the temperature of the external cold air to increase before entering the oil tank, thereby affecting the final cooling effect on the internal environment of the oil tank.

[0018] To achieve the above object, the present invention provides the following technical solution: a dehumidification component for a power transformer and a dehumidification method thereof, comprising the following steps:

[0019] First, the oil volume in the oil tank inside the power transformer body expands under high temperature, and the gas inside the oil tank is discharged to the outside of the oil tank through the oil tank breather. The rubber pad moves downward under the action of pressure, so that the vent hole is exposed in the area where the oil tank breather is located, and then the piston plate is pushed to move to seal the air intake assembly, so that a one-way gas outflow channel is formed inside, and the activated carbon inside the filter chamber is dried and heated, and finally flows into the outside;

[0020] At the same time, the movement of the rubber pad will push the sliding rod to move synchronously, so that the sliding rod and the circular card plate contact and push the lifting plate to descend synchronously. The descending lifting plate can open the ventilation fan blades to facilitate air exchange, and the reset of the sliding rod allows the lifting plate to automatically reset under the gravity of the ventilation fan blades and the matching cylinder;

[0021] When the air inside the fuel tank is discharged through the air inlet of the fixed cylinder, its internal pressure will gradually decrease and eventually disappear completely, and the torque spring placed inside the cylinder will release the stored kinetic energy to reset the piston plate. After the reset, the inlet of the intake assembly will be opened to form an intake channel. The reset piston plate will close the vent to prevent the gas from reaching the inside of the intake assembly from the vent and being sucked into the fuel tank by the tank breather.

[0022] Then, after the air is exhausted from the fuel tank, no new air enters to form negative pressure, and the suction closing plate and the T-shaped piston form a gas flow channel. Then, the gas is sucked into the fuel tank after filtering and dust removal through the filter chamber. The new air entering the fuel tank can not only make the pressure inside the fuel tank balanced, but also cool the inside of the fuel tank. After the gas inside the fuel tank is replenished, the T-shaped piston will re-seal the inlet end under the action of its own gravity.

[0023] When the oil tank is replenished with gas, the moisture in the air will gradually condense on the outside of the conical inlet, and finally condense into water droplets to be caught by the collection chamber. The water inside the collection chamber can provide a cooling effect on the power transformer body. When there is enough water inside the collection chamber, the collection chamber will drop to open the drain port of the collection chamber, and all the water inside will be discharged, so as to prevent the power transformer body from being in a humid environment for a long time.

[0024] When the water inside the collecting bin is drained, the elastic pad will remain in an open state under the action of the cavity seat and the lifting rod until the water inside the collecting bin is completely drained, and then the drain port of the collecting bin will be re-closed to form a closed space, and the collecting bin will return to its initial position under the action of the second spring.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention can isolate the oil tank respirator area inside the storage bin from direct entry of outside air from other paths without interference from external factors through the close fit between the rubber pad and the inner wall of the storage bin, so that when there is no gas outflow from the oil tank inside the power transformer, no new gas will enter for exchange, thus avoiding the rapid decrease in dielectric strength of the oil inside the oil tank caused by outside air entering without dehumidification, and at the same time increasing the conductivity of the oil, thereby reducing the insulation performance of the transformer, so that the service life of the power transformer can be extended;

[0027] 2. At the same time, the sealing pad arranged on the sliding rod can block the connection gap between the sliding rod and the fixed plate when the first spring lifts the rubber pad, isolating the outside air in other areas of the placement bin. When the sliding rod descends, the gap between the fixed plate and the sliding rod will be opened, so that the air in the area between the fixed plate and the rubber pad reaches the placement bin area where the ventilation fan is located through the gap, and at the same time, the air here is disturbed to increase its air exchange, thereby enhancing the heat dissipation effect on the surrounding environment of the placement bin;

[0028] 3. The sealing ring plate arranged on the piston plate can seal the entrance of the tapered channel when the piston plate moves under the push of pressure, so that the gas to be delivered can only enter the filter chamber through the fixed cylinder. These gases themselves will leave the oil tank with heat. When entering the filter chamber, they will heat the activated carbon and silica gel adsorbents inside, so that the moisture absorbed by these substances is converted into gas again and discharged. This not only extends the service life of these substances, but also utilizes the heat energy of the gas discharged from the oil tank. In addition, the cooled gas can descend to disturb the interior, increase its air fluidity, and improve the heat dissipation effect.

[0029] 4. The collection bin arranged below the filter bin can collect water droplets generated during dehumidification of the filter bin. At the same time, when the power transformer is working in a rainy environment, rainwater will increase the humidity in the air, causing some moisture in the air to adhere to the bottom of the filter bin to form water droplets. If these water droplets are not collected and processed, the working environment of the transformer will eventually be in a humid environment for a long time, affecting the normal operation of the transformer. When enough water is collected inside the collection bin, the collection bin will fall under its own gravity. After falling to a predetermined position, the elastic pad on the drain port inside the collection bin will leave, and all the water inside the collection bin will flow out through the bellows, so that the transformer can avoid being in a humid environment for a long time. The small amount of water inside the collection bin can also absorb heat from the power transformer and enhance its heat dissipation effect.

[0030] 5. The cavity seat and the lifting rod arranged inside the collection bin can retain some air inside the cavity seat during the process of collecting water in the collection bin. When the elastic pad opens the drain port of the collection bin, the cavity seat will provide a certain buoyancy to make the water completely drained before the elastic pad completely drops to reclose the drain port, so as to avoid the elastic pad re-blocking the drain port when the water inside the collection bin is not completely drained, thus affecting the drainage effect;

[0031] 6. When air intake is needed, the negative pressure generated inside the fuel tank will suck up the T-shaped piston set on the tapered channel, so that the T-shaped piston and the tapered channel will no longer form a fit state, which is convenient for the passage of gas. At the same time, the gas will enter the fixed cylinder only after passing through the dehumidification filtration of the filter bin, and enter the area where the fuel tank breather is located through the tapered channel, forming a separate entry channel to avoid direct contact with other gases and affect the cooling effect of the gas on the inside of the fuel tank after entering the fuel tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is an overall schematic diagram of the device of the present invention.

[0033] Figure 2 It is a schematic diagram of the overall explosion structure of the device of the present invention.

[0034] Figure 3 It is a schematic diagram of the side sectional structure inside the placement bin of the device of the present invention.

[0035] Figure 4 It is a schematic diagram of the rear cross-sectional structure of the interior of the placement chamber of the device of the present invention.

[0036] Figure 5 This is a schematic diagram of the explosion of the internal structure of the storage bin of the device of the present invention.

[0037] Figure 6 It is a schematic diagram of the filter chamber structure of the device of the present invention.

[0038] Figure 7 It is a schematic diagram of the connection structure between the delivery component and the air intake component of the device of the present invention.

[0039] Figure 8 It is a schematic diagram of the side cross-sectional structure of the conveying component and the air intake component of the device of the present invention.

[0040] Fig. 9 It is a partial enlarged schematic diagram of location A of the device of the present invention.

[0041] Fig.10 It is a partial enlarged schematic diagram of position B of the device of the present invention.

[0042] Fig.11 It is a schematic diagram of the connection structure between the fixed bottom rod and the matching cylinder of the device of the present invention.

[0043] Fig.12 Schematic diagram of the internal structure of the collecting component of the device of the present invention.

[0044] In the figure: 1. Power transformer body; 2. Oil tank breather; 3. Placement chamber; 31. Partition plate; 32. Vent hole; 33. Ejector rod; 34. T-shaped plate; 4. Filter chamber; 41. Conical inlet; 42. T-shaped slot; 5. Compression adjustment assembly; 51. Rubber pad; 52. Sliding rod; 53. Sealing pad; 54. First spring; 55. Fixed plate; 6. Conveying assembly; 61. Fixed cylinder; 611. Air inlet; 62. Piston plate; 63. Blocking ring plate; 64. Spiral ring; 65. Placement cylinder; 651. Clamping block; 66. Torque spring; 67. Placement base; 7. Air intake assembly; 71. Air intake square tube; 72 , conical channel; 73, cross bracket; 74, telescopic rod; 75, T-shaped piston; 76, closing plate; 8, collecting assembly; 81, collecting bin; 811, support rod; 812, second spring; 813, positioning rod; 82, supporting plate; 83, rotating rod; 84, Z-shaped rod; 85, lifting rod; 86, cavity seat; 87, elastic pad; 88, bellows; 9, ventilation fan blades; 10, opening and closing assembly; 101, fixing rod; 102, lifting plate; 103, circular clamping plate; 104, extension plate; 105, spiral ring plate; 106, fixed bottom rod; 107, matching cylinder; 108, sliding plate; 109, I-shaped rod. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0046] See also Figures 1 to 10, which is the first embodiment of the present invention, provides a technical solution: a dehumidification component for a power transformer, comprising a power transformer body 1 and an oil tank breather 2 arranged inside the power transformer body 1, and the oil tank breather 2 is communicated with the oil tank inside the power transformer body 1, a placement bin 3 is arranged on one side of the power transformer body 1, and one end of the oil tank breather 2 is located inside the placement bin 3, a partition plate 31 is arranged inside the placement bin 3, and a conveying component 6 is arranged on one side of the partition plate 31, the conveying component 6 is used to convey excess gas to the outside when the oil inside the oil tank expands, so as to avoid the formation of high pressure inside the placement bin 3, an air intake component 7 is arranged on the conveying component 6, the air intake component 7 is used to convey air when negative pressure is formed inside the oil tank and external air needs to be input to form a balance, a compression adjustment component 5 is arranged inside the placement bin 3, the compression adjustment component 5 is used to open a channel to allow gas to pass when gas needs to be sent to the outside, and to allow gas to be conveyed from the air intake component 7 when it is not needed;

[0047] The compression adjustment component 5 includes a rubber pad 51 arranged inside the storage bin 3. The rubber pad 51 slides in contact with the inner wall of the storage bin 3. When the oil inside the oil tank expands at high temperature, the gas inside the oil tank is transported to the storage bin 3 through the oil tank breather 2, so that the gas can push the rubber pad 51 to move downward. A sliding rod 52 is arranged on the side of the rubber pad 51 away from the oil tank breather 2. The sliding rod 52 is used to slide. When the bottom end of the sliding rod 52 gradually contacts the opening and closing component 10, the opening and closing component 10 can be started to replace the gas under the fixed plate 55. A sealing gasket 53 is arranged on the end of the sliding rod 52 away from the rubber pad 51. The sealing gasket 53 is used to replace the sliding rod 52 and the fixed plate 55. The gap is closed to prevent the gas from under the fixed plate 55 from entering the area where the tank breather 2 is located through the gap. A first spring 54 is arranged on the outside of the sliding rod 52. The first spring 54 is used to push the rubber pad 51 to reset when the pressure in the space where the tank breather 2 is located inside the placement bin 3 is reduced. During the resetting process, the opening and closing assembly 10 pushed by the sliding rod 52 is also automatically reset. The fixed plate 55 is arranged inside the placement bin 3, and the fixed plate 55 is located between the sealing pad 53 and the first spring 54. The fixed plate 55 is used to limit the movement of the sliding rod 52 and act on the rubber pad 51 at the same time, so that the rubber pad 51 will not shake during the entire movement process.

[0048] A vent hole 32 is provided through the partition plate 31, and the vent hole 32 is used to facilitate the gas to directly enter the fixed cylinder 61 after passing through. The entire gas flow channel is changed by pushing the piston plate 62 inside the fixed cylinder 61. A push rod 33 is provided inside the placement chamber 3, and the push rod 33 is used to cooperate with the Z-shaped rod 84 to make the Z-shaped rod 84 rotate, so that the water inside the collection chamber 81 can be sent out from the bellows 88 after the elastic pad 87 rises, so as to prevent the power transformer body 1 from being in a humid environment for a long time. The placement chamber 3 is symmetrically provided with a T-shaped plate 34, and the T-shaped plate 34 is provided with a filter chamber 4, and the filter chamber 4 A filter for filtering moisture and dust impurities from the outside air, such as activated carbon, molecular sieve, etc., is placed inside to prevent the air entering the power transformer body 1 from carrying moisture and polluting the hydraulic oil inside the oil tank. A conical inlet 41 is provided on one side of the filter bin 4. The conical inlet 41 is used to form a Bernoulli effect when the air enters through the shape of the inlet and outlet diameters set when the air enters. The flow rate inside the air filter bin 4 is slowed down, so that the air has a longer time to be filtered and dried inside the filter bin 4. T-shaped grooves 42 are symmetrically opened on the filter bin 4, and the T-shaped grooves 42 are engaged and slid with the T-shaped plate 34.

[0049] The conveying assembly 6 includes a fixed cylinder 61 arranged on the partition plate 31, and a piston plate 62 movably arranged inside the fixed cylinder 61. The piston plate 62 is used to move under the action of gas squeezing. During the movement, the blocking ring plate 63 on the piston plate 62 can block the entrance of the tapered channel 72, so that the gas can only reach the filter bin 4 through the air inlet 611 opened on the fixed cylinder 61, and thus enter the external environment. The blocking ring plate 63 is arranged on the side of the piston plate 62 away from the partition plate 31. The blocking ring plate 63 is used to move with the piston plate 62 to block the entrance of the tapered channel 72 during the movement. The spiral ring 64 is arranged on the side of the piston plate 62 close to the blocking ring plate 63. The spiral ring 64 is used to As the piston plate 62 moves, the torque spring 66 inside the placement cylinder 65 can be torqued, so that there is enough power to reset the piston plate 62. The placement cylinder 65 is arranged inside the spiral ring 64, and the piston is arranged on the placement base 67 at the end of the placement cylinder 65 away from the spiral ring 64, and the placement base 67 is fixedly connected to the fixed cylinder 61. The placement base 67 is used to engage and rotate the placement cylinder 65. When the rotation of the placement cylinder 65 is satisfied, it can also support the placement cylinder 65 so that the placement cylinder 65 will not swing in a circle when rotating. It also includes a torque spring 66 arranged inside the placement cylinder 65. The torque spring 66 is used to store the rotational force of the placement cylinder 65 to facilitate the subsequent resetting of the piston plate 62.

[0050] An array of air inlets 611 are provided on the fixed cylinder 61, and the air inlets 611 are used to facilitate the circulation of gas, and the entire gas flow will only move toward the air inlet component 7 to ensure that unfiltered gas will not directly enter the interior of the air inlet component 7. A snap-fit ​​block 651 is provided on the placement cylinder 65, and the snap-fit ​​block 651 and the spiral ring 64 are snap-fitted and slid. A ventilation fan blade 9 is provided on the placement bin 3, and an opening and closing component 10 is provided inside the placement bin 3. The opening and closing component 10 is used to open and close the ventilation fan blade 9. A collecting component 8 is provided inside the placement bin 3, and the collecting component 8 is used to discharge the collected water to the outside of the power transformer body 1 on rainy days.

[0051] During use, the oil tank inside the power transformer body 1 expands as the temperature rises, sending the gas inside the oil tank into the storage bin 3 through the oil tank breather 2. When the pressure in the area where the rubber pad 51 is located inside the storage bin 3 gradually increases, the rubber pad 51 is squeezed to move. As the rubber pad 51 moves, the vent 32 is exposed in the area where the oil tank breather 2 is located, so that the gas can enter the fixed cylinder 61. Then the gas will push the piston plate 62 to move. As the piston plate 62 moves, the sealing ring plate 63 on the piston plate 62 blocks the inlet of the air intake assembly 7. Then, as the piston plate 62 continues to move, The gas can be sent to the inside of the filter bin 4 along the air inlet 611, and during the movement of the piston plate 62, the placement cylinder 65 can be rotated by the engagement and sliding between the locking block 651 and the spiral ring 64, and the torque spring 66 can store the kinetic energy during the rotation, so that when the piston plate 62 needs to be reset later, the torque spring 66 can release the kinetic energy. The gas is sent directly from the inside of the oil tank and will carry a large amount of heat energy. When the gas reaches the inside of the filter bin 4, the filter material inside the filter bin 4 can be dried, and a part of the absorbed moisture can be evaporated back into gas form, and finally reach the external environment from the opening of the placement bin 3. Example 2

[0052] See also Figures 1 to 12 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that:

[0053] The air intake assembly 7 includes an air intake square tube 71 arranged on the partition plate 31, and the air intake square tube 71 is fixedly connected to the partition plate 31 to transport gas, so as to facilitate the tank respirator 2 to inhale the air supplied, and a conical channel 72 is arranged on the air intake square tube 71, and the conical channel 72 is fixedly connected to the fixed cylinder 61 at one end away from the air intake square tube 71, and the conical channel 72 is used to facilitate the entry of air without generating an excessively fast flow rate, and also includes a cross bracket 73 arranged inside the conical channel 72, and the cross bracket 73 is used to support the telescopic rod 74, so that the telescopic rod 74 has a stable support for extension and retraction, and the cross bracket 73 is arranged away from the air intake square tube The telescopic rod 74 on one side of 71 is provided with a T-shaped piston 75 on the side of the telescopic rod 74 away from the cross bracket 73. The T-shaped piston 75 is used to generate negative pressure inside the fuel tank. When external air is needed, the T-shaped piston 75 can be sucked up. When the T-shaped piston 75 leaves the current position, the T-shaped piston 75 and the tapered channel 72 will no longer fit together, so that air can enter the air intake square tube 71 through the tapered channel 72 to reach the fuel tank breather 2, and finally enter the fuel tank, thereby achieving the stability of the internal pressure of the fuel tank. The closing plate 76 is symmetrically arranged on the side of the air intake square tube 71 close to the fuel tank breather 2, and the closing plate 76 can only rotate in one direction. The closing plate 76 is used to achieve the one-way flow of gas.

[0054] The collecting assembly 8 comprises a collecting bin 81 arranged inside the placing bin 3, the inner bottom end of the collecting bin 81 presents an inclined slope converging toward the center, so as to facilitate the complete discharge of the collected water, a supporting plate 82 arranged inside the collecting bin 81, a rotating rod 83 movably arranged on the supporting plate 82, the rotating rod 83 is used to rotate and lift the elastic pad 87 blocking the drain port of the collecting bin 81, so that the water inside the collecting bin 81 can flow out from the bellows 88, and a Z-shaped rod 84 arranged on the collecting bin 81. When the collecting bin 81 drops, the Z-shaped rod 84 and the top rod 33 on the placing bin 3 are engaged. When one end of the Z-shaped rod 84 is lifted up, the rotating rod 83 is squeezed to rotate. The rotating rod 83 with a changed angle will drive the elastic pad 87 to rise, thereby opening the drain port of the collecting bin 81, so that the water inside the collecting bin 81 can flow smoothly to the outside. A lifting rod 85 is movably arranged on the side of the rotating rod 83 away from the supporting plate 82. A gasket is arranged on the lifting rod 85 to cooperate with the cavity seat 86. When the cavity seat 86 and the gasket are in contact and fit, a closed space is formed inside. There is air in this space, which can make the cavity seat 86 There is a certain buoyancy in the water, which supports the elastic pad 87 to keep the drain port of the collection bin 81 open. After all the water in the collection bin 81 is released, the elastic pad 87 will fall and fit at the drain port of the collection bin 81. The cavity seat 86 is movably arranged on the lifting rod 85. The cavity seat 86 has a cavity inside. When the water gradually falls into the collection bin 81, the cavity seat 86 can have a certain buoyancy by relying on the air inside itself. However, the buoyancy at this time cannot be compared with the squeezing force caused by the water's own gravity on the elastic pad 87. Therefore, when the cavity seat 86 slides and floats on the lifting rod 85, When the rotating rod 83 rotates, the elastic pad 87 will be separated from the drain port of the collecting bin 81 so that water flows out from the drain port, and the elastic pad 87 will not be able to fall down under the action of the cavity seat 86 until the water inside the collecting bin 81 is completely released. The elastic pad 87 will re-close the drain port of the collecting bin 81 under the action of its own gravity. The elastic pad 87 is arranged at the end of the lifting rod 85 away from the rotating rod 83, and the bellows 88 is arranged on the collecting bin 81. The bellows 88 is used to drain the water inside the collecting bin 81.

[0055] Support rods 811 are symmetrically arranged on the collecting bin 81, and the support rods 811 are fixedly connected to the side away from the collecting bin 81 and the placing bin 3. The support rods 811 can be extended and retracted, and are used to provide a stable support for the collecting bin 81 after the collecting bin 81 collects enough water and then descends. A second spring 812 is sleeved on the outside of the support rods 811, and the second spring 812 is used to have sufficient resilience to rebound and reset the collecting bin 81 after the water inside the collecting bin 81 is discharged. A positioning rod 813 is arranged on the collecting bin 81, and the positioning rod 813 is used to stabilize the collecting bin 81 during the descent process to prevent the collecting bin 81 from shaking.

[0056] During use, the collecting chamber 81 inside the placing chamber 3 will collect the water condensed by the conical inlet 41 on the filtering chamber 4. After collecting enough water, the collecting chamber 81 will descend. During the descending process, the Z-shaped rod 84 will contact the top rod 33, causing the Z-shaped rod 84 to rotate. The rotating Z-shaped rod 84 will squeeze the rotating rod 83 to rotate, thereby lifting the elastic pad 87. The lifted elastic pad 87 will open the drain port of the collecting chamber 81, so that the water inside the collecting chamber 81 can flow smoothly to the outside. A gasket is provided on the lifting rod 85. When the cavity seat 86 is in contact with the gasket, a closed space is formed inside. There is air in this space, which can make the cavity seat 86 have a certain buoyancy in the water, thereby supporting the elastic pad 87 to keep the drain port of the collecting bin 81 open. Only after all the water in the collecting bin 81 is released, the elastic pad 87 will fall and fit at the drain port of the collecting bin 81, thereby completing the entire draining process, and then the collecting bin 81 is reset under the action of the second spring 812.

[0057] The remaining structures are the same as those of Example 1. Example 3

[0058] See also Figures 1 to 12 , which is the third embodiment of the present invention. This embodiment is different from the first and second embodiments in that:

[0059] The opening and closing assembly 10 includes a fixed rod 101 arranged on the ventilation fan blade 9, the fixed rod 101 is fixedly connected to the ventilation fan blade 9, and is used to rotate under the drive of the lifting plate 102, and the lifting plate 102 is movably arranged on the side of the fixed rod 101 away from the ventilation fan blade 9, and the lifting plate 102 and the fixed rod 101 are engaged and slid. An inclined groove is arranged at the contact point between the fixed rod 101 and the lifting plate 102, which is used to drive the fixed rod 101 to rotate at an angle when the lifting plate 102 is lowered, and the ventilation fan blade 9 is driven to rotate synchronously with the rotation of the fixed rod 101, so that the air inside the area below the fixed plate 55 is discharged, and a circular clamping plate 103 is arranged on the lifting plate 102 near one end of the fixed plate 55, and the circular clamping plate 103 is used to be clamped with the sliding rod 52, The sealing gasket 53 arranged on the sliding rod 52 can prevent the sliding rod 52 from being unable to push the circular clamping plate 103 to move. The extension plate 104 and the spiral ring plate 105 arranged on the extension plate 104 are symmetrically arranged on the lifting plate 102. The spiral ring plate 105 is used to engage and slide with the I-shaped rod 109. When the lifting plate 102 is lowered, the matching cylinder 107 can be rotated and ascended. The fixed bottom rod 106 is symmetrically arranged inside the placement bin 3. The fixed bottom rod 106 has a spiral cutout for cooperating with the cutout on the matching cylinder 107. When the matching cylinder 107 is rotated, the whole can be lifted to a certain extent, so that after the sliding rod 52 is reset, the lifting plate 102 can be reset under the self-gravity of the matching cylinder 107 and the ventilation fan blades 9.

[0060] A matching tube 107 is arranged on the fixed bottom rod 106, and a sliding plate 108 is arranged on the matching tube 107. The sliding plate 108 is used to drive the matching tube 107 to rotate synchronously. It can rotate under the squeezing of the spiral ring plate 105. At the same time, the I-shaped rod 109 clamps the spiral ring plate 105 and the sliding plate 108 so that the whole will not fall off. The sliding plate 108 is provided with an I-shaped rod 109.

[0061] The movement of the circular card plate 103 drives the lifting plate 102 to move synchronously, so that the fixed rod 101 slidably connected with the lifting plate 102 drives the ventilation fan blades 9 to rotate. The rotating ventilation fan blades 9 have enough gaps to facilitate the flow of air in the area where the lifting plate 102 of the placement bin 3 is located, thereby exchanging air with the outside world. The descent of the lifting plate 102 simultaneously drives the spiral ring plate 105 to descend. Under the squeezing of the spiral ring plate 105 on the sliding plate 108, the sliding plate 108 rotates, thereby driving the matching cylinder 107 to rotate and rise along the fixed bottom rod 106. After the sliding rod 52 is reset, the lifting plate 102 can be reset autonomously under the self-gravity of the matching cylinder 107 and the ventilation fan blades 9, completing the convection exchange of the entire air.

[0062] The remaining structures are the same as those of embodiments 1 and 2. Example 4

[0063] See also Figures 1 to 12 , which is the fourth embodiment of the present invention, and provides: a dehumidification component for a power transformer and a dehumidification method thereof, comprising the following steps:

[0064] S1, first, the oil volume in the oil tank inside the power transformer body 1 expands under high temperature, and the gas inside the oil tank is discharged to the outside of the oil tank through the oil tank breather 2, and the rubber pad 51 moves downward under the action of pressure, so that the vent hole 32 is exposed in the area where the oil tank breather 2 is located, and then the piston plate 62 is pushed to move to seal the air intake assembly 7, so that a one-way gas outflow channel is formed inside, and the activated carbon inside the filter chamber 4 is dried and heated, and finally flows into the outside;

[0065] S2, at the same time, the movement of the rubber pad 51 will push the sliding rod 52 to move synchronously, so that the sliding rod 52 and the circular clamping plate 103 are in contact with each other to push the lifting plate 102 to descend synchronously, and the descending lifting plate 102 can open the ventilation fan blades 9 to facilitate air exchange, and the reset of the sliding rod 52 allows the lifting plate 102 to automatically reset under the gravity of the ventilation fan blades 9 and the matching tube 107;

[0066] S3, when the air inside the oil tank is discharged through the air inlet 611 of the fixed cylinder 61, its internal pressure will gradually decrease and eventually disappear completely, and the torque spring 66 inside the placement cylinder 65 will release the stored kinetic energy, so that the piston plate 62 completes the reset. After the reset, the inlet of the air intake assembly 7 is opened to form an air intake channel. The reset piston plate 62 closes the vent hole 32 to prevent the gas from reaching the inside of the air intake assembly 7 from the vent hole 32 and being sucked into the oil tank by the oil tank breather 2;

[0067] S4, after the air is exhausted from the fuel tank, no new air enters to form a negative pressure, and the suction closing plate 76 and the T-shaped piston 75 form a gas flow channel, and then the gas is sucked into the fuel tank after filtering and dust removal through the filter chamber 4. The new air entering the fuel tank can not only make the pressure inside the fuel tank balanced, but also cool the inside of the fuel tank. After the gas inside the fuel tank is replenished, the T-shaped piston 75 will re-block the inlet end under the action of its own gravity;

[0068] S5, when the oil tank is replenished with gas, the moisture in the air will gradually condense outside the conical inlet 41, so that it will eventually condense into water droplets and be caught by the collecting chamber 81. The water inside the collecting chamber 81 can provide a cooling effect on the power transformer body 1. When there is enough water inside the collecting chamber 81, the collecting chamber 81 will be lowered to open the drain port of the collecting chamber 81, and all the water inside will be discharged, so as to prevent the power transformer body 1 from being in a humid environment for a long time;

[0069] S6. When the water inside the collecting bin 81 is drained, the elastic pad 87 will remain in an open state under the action of the cavity seat 86 and the lifting rod 85 until the water inside the collecting bin 81 is completely drained, and then the drain port of the collecting bin 81 will be re-fitted to form a closed space, and the collecting bin 81 will return to its initial position under the action of the second spring 812.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dehumidification component for a power transformer, comprising a power transformer body (1) and an oil tank breather (2) arranged inside the power transformer body (1), wherein the oil tank breather (2) and the oil tank inside the power transformer body (1) are interconnected, a storage bin (3) is arranged on one side of the power transformer body (1), and one end of the oil tank breather (2) is located inside the storage bin (3), a partition plate (31) is arranged inside the storage bin (3), and a conveying component (6) is arranged on one side of the partition plate (31), the conveying component (6) is used to convey excess gas to the outside when the oil inside the oil tank expands, an air intake component (7) is arranged on the conveying component (6), the air intake component (7) is used to convey air when negative pressure is formed inside the oil tank and external air needs to be input to form a balance, and a compression adjustment component (5) is arranged inside the storage bin (3), the compression adjustment component (5) is used to open a channel to allow gas to pass when gas needs to be conveyed to the outside, and to convey gas from the air intake component (7) when gas is not needed; The compression adjustment assembly (5) comprises a rubber pad (51) arranged inside the storage bin (3), a sliding rod (52) arranged on a side of the rubber pad (51) away from the fuel tank breather (2), a sealing pad (53) arranged on an end of the sliding rod (52) away from the rubber pad (51), a first spring (54) arranged outside the sliding rod (52), and a fixing plate (55) arranged inside the storage bin (3); The partition plate (31) is provided with a vent hole (32) extending therethrough, a top rod (33) is provided inside the placement bin (3), a T-shaped plate (34) is symmetrically provided on the placement bin (3), a filter bin (4) is provided on the T-shaped plate (34), a conical inlet (41) is provided on one side of the filter bin (4), a T-shaped groove (42) is symmetrically provided on the filter bin (4), and the T-shaped groove (42) and the T-shaped plate (34) are engaged and slidably engaged with each other; The conveying assembly (6) comprises a fixed cylinder (61) arranged on the partition plate (31), a piston plate (62) movably arranged inside the fixed cylinder (61), a blocking ring plate (63) arranged on the side of the piston plate (62) away from the partition plate (31), a spiral ring (64) arranged on the side of the piston plate (62) close to the blocking ring plate (63), a placement cylinder (65) arranged inside the spiral ring (64), a piston arranged on a placement base (67) at one end of the placement cylinder (65) away from the spiral ring (64), and the placement base (67) is fixedly connected to the fixed cylinder (61), and also comprises a torque spring (66) arranged inside the placement cylinder (65); The fixed cylinder (61) is provided with an array of air inlets (611); the placement cylinder (65) is provided with a snap-fit ​​block (651), and the snap-fit ​​block (651) and the spiral ring (64) are snap-fitted and slidably engaged; the placement chamber (3) is provided with a ventilation fan blade (9); an opening and closing component (10) is provided inside the placement chamber (3); the opening and closing component (10) is used to open and close the ventilation fan blade (9); and a collecting component (8) is provided inside the placement chamber (3); the collecting component (8) is used to discharge collected water to the outside of the power transformer body (1); The air intake assembly (7) comprises an air intake square tube (71) arranged on a partition plate (31), a tapered channel (72) arranged on the air intake square tube (71), wherein one end of the tapered channel (72) away from the air intake square tube (71) is fixedly connected to a fixed cylinder (61), and further comprises a cross bracket (73) arranged inside the tapered channel (72), a telescopic rod (74) arranged on a side of the cross bracket (73) away from the air intake square tube (71), a T-shaped piston (75) arranged on a side of the telescopic rod (74) away from the cross bracket (73), and a closing plate (76) symmetrically arranged on a side of the air intake square tube (71) close to the oil tank breather (2), wherein the closing plate (76) can only rotate in one direction.

2. A dehumidification component for a power transformer according to claim 1, characterized in that: The collecting assembly (8) comprises a collecting bin (81) arranged inside the placing bin (3), a support plate (82) arranged inside the collecting bin (81), a rotating rod (83) movably arranged on the support plate (82), a Z-shaped rod (84) arranged on the collecting bin (81), a lifting rod (85) movably arranged on a side of the rotating rod (83) away from the support plate (82), a cavity seat (86) movably arranged on the lifting rod (85), an elastic pad (87) arranged on an end of the lifting rod (85) away from the rotating rod (83), and a bellows (88) arranged on the collecting bin (81).

3. A dehumidification component for a power transformer according to claim 2, characterized in that: The collecting bin (81) is symmetrically provided with support rods (811), and the side of the support rods (811) away from the collecting bin (81) is fixedly connected to the placement bin (3), a second spring (812) is sleeved on the outside of the support rods (811), and a positioning rod (813) is provided on the collecting bin (81).

4. A dehumidification component for a power transformer according to claim 2, characterized in that: The opening and closing assembly (10) comprises a fixing rod (101) arranged on the ventilation fan blade (9), a lifting plate (102) movably arranged on a side of the fixing rod (101) away from the ventilation fan blade (9), a circular clamping plate (103) arranged on an end of the lifting plate (102) close to the fixing plate (55), an extension plate (104) symmetrically arranged on the lifting plate (102), a spiral ring plate (105) arranged on the extension plate (104), and a fixing bottom rod (106) symmetrically arranged inside the storage bin (3).

5. A dehumidification component for a power transformer according to claim 4, characterized in that: A matching tube (107) is provided on the fixed bottom rod (106), a sliding plate (108) is provided on the matching tube (107), and an I-shaped rod (109) is provided on the sliding plate (108).

6. A dehumidification method for a dehumidification component of a power transformer according to any one of claims 1 to 5, characterized in that: First, the oil volume in the oil tank inside the power transformer body (1) expands at high temperature, and the gas inside the oil tank is discharged to the outside of the oil tank through the oil tank breather (2). The rubber pad (51) moves downward under the action of pressure, so that the vent hole (32) is exposed in the area where the oil tank breather (2) is located, and then the piston plate (62) is pushed to move to seal the air intake component (7), so that a one-way gas outflow channel is formed inside, and the activated carbon inside the filter chamber (4) is dried and heated, and finally flows into the outside; At the same time, the movement of the rubber pad (51) pushes the sliding rod (52) to move synchronously, so that the sliding rod (52) and the circular clamping plate (103) contact each other and push the lifting plate (102) to descend synchronously. The descending lifting plate (102) can open the ventilation fan blades (9) to facilitate air exchange, and the reset of the sliding rod (52) allows the lifting plate (102) to automatically reset under the gravity of the ventilation fan blades (9) and the matching tube (107); When the air inside the oil tank is discharged through the air inlet (611) of the fixed cylinder (61), the internal pressure will gradually decrease and eventually disappear completely, and the torque spring (66) inside the placement cylinder (65) will release the stored kinetic energy, so that the piston plate (62) can be reset. After the reset, the inlet of the air intake assembly (7) is opened to form an air intake channel. The reset piston plate (62) closes the vent hole (32) to prevent the gas from reaching the inside of the air intake assembly (7) from the vent hole (32) and being sucked into the oil tank by the oil tank breather (2); Then, after the air is exhausted from the inside of the oil tank, no new air enters to form a negative pressure, and the suction closing plate (76) and the T-shaped piston (75) form a gas flow channel. Subsequently, the gas passes through the filter chamber (4) to complete the filtration and dust removal and is then sucked into the oil tank. The new air entering the oil tank can not only achieve a pressure balance inside the oil tank, but also cool the inside of the oil tank. After the gas inside the oil tank is replenished, the T-shaped piston (75) will re-seal the inlet end under the action of its own gravity. When the oil tank is replenished with gas, moisture in the air will gradually condense outside the conical inlet (41), and eventually condense into water droplets that are caught by the collecting chamber (81). The water inside the collecting chamber (81) can provide a cooling effect for the power transformer body (1). When there is enough water inside the collecting chamber (81), the collecting chamber (81) will descend, thereby opening the drain port of the collecting chamber (81) and draining all the water inside, thereby preventing the power transformer body (1) from being in a humid environment for a long time. When the water inside the collecting bin (81) is drained, the elastic pad (87) will remain in an open state under the action of the cavity seat (86) and the lifting rod (85) until the water inside the collecting bin (81) is completely drained, and then the drain port of the collecting bin (81) will be closed again to form a closed space, and the collecting bin (81) will return to its initial position under the action of the second spring (812).

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