New energy oil-immersed transformer based on cooling protection device

Abstract

The invention discloses a new energy oil-immersed transformer based on a cooling protection device, and relates to the technical field of new energy oil-immersed transformers, the new energy oil-immersed transformer based on the cooling protection device comprises a transformer shell, and a coil is fixed in the transformer shell. The new energy oil-immersed transformer based on the cooling protection device is provided with the cooling device, the temperature in the transformer shell is detected through the temperature sensor, and when the temperature sensor detects that the temperature in the transformer shell is too high, an electric signal is sent to the control module, so that the control module controls the sucking pump to start; according to the cooling device for the transformer, the liquid nitrogen box is used for cooling sucked air, the cooled air is blown out of the diffusion head through the air conveying pipe, heat exchange is conducted on the two sides of the ceramic cooling fin, and therefore the cooling speed of the ceramic cooling fin is further increased, and the problem that the efficiency of cooling the interior of the transformer through automatic cooling of an existing ceramic cooling fin is low is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy oil-immersed transformers based on a cooling protection device, and in particular to a new energy oil-immersed transformer based on a cooling protection device. Background Art

[0002] In the new energy sector, oil-immersed transformers can be used in scenarios such as wind and solar power generation. For example, in large wind farms, oil-immersed transformers boost the voltage of electricity generated by wind turbines and transmit it to the power grid. Oil-immersed transformers immerse the transformer's core and windings in a tank filled with insulating oil. The oil acts as both an insulating and cooling medium, and convection in the oil transfers heat generated by the windings and core to the tank walls. Heat is then dissipated into the air through heat sinks on the tank walls.

[0003] Patent announcement number CN118782355B is a new energy oil-immersed transformer based on a cooling protection device, comprising a transformer housing, a cold air diffusion device provided inside the transformer housing, an oil circulation device provided inside the transformer housing, and a top temperature detection device provided inside the transformer housing. This new energy oil-immersed transformer based on a cooling protection device is provided with an oil circulation device, and an oil pump is responsible for driving the transformer oil to circulate between the cooling device and the transformer body. Through the action of the oil pump, and the oil circulation pipe is connected to the side of the condenser pipe, the transformer oil can continuously dissipate heat through the cooler, thereby achieving effective cooling of the entire transformer body. The flow rate and pressure of the oil pump can be adjusted according to the actual needs of the transformer to ensure the optimization of the cooling effect.

[0004] However, the above-mentioned oil-immersed transformer uses oil to drive heat to dissipate through the condenser, which increases the heat dissipation step. In addition, it takes a long time for the condenser to dissipate heat by itself. The indoor and outdoor temperatures are not always constant. When the weather is hot, the efficiency of the condenser's self-heating is even lower, which greatly affects the cooling and heat dissipation of the transformer. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a new energy oil-immersed transformer based on a cooling protection device, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a new energy oil-immersed transformer based on a cooling protection device, comprising a transformer housing, a coil fixed inside the transformer housing, a porcelain insulator fixed on the upper surface of the coil, the porcelain insulator penetrating the upper surface of the transformer housing and fixedly connected at the penetration point, an oil pillow is provided on the left side of the transformer housing, the oil pillow is connected to the transformer housing, a porcelain heat sink is fixed on the front of the transformer housing, a temperature sensor is fixed on the upper surface of the transformer housing, a control panel is fixed on the front of the transformer housing, a detection head of the temperature sensor penetrating the upper surface of the transformer housing and fixedly connected at the penetration point, a cooling device for facilitating heat dissipation of the porcelain heat sink is provided on the front of the transformer housing, a knocking device for facilitating improving heat dissipation efficiency is provided above the cooling device, and an exhaust device for facilitating pressure relief inside the transformer housing is provided on the front of the transformer housing;

[0007] Among them, the cooling device includes a liquid nitrogen box, an air pump, an air pipe, a diffusion head, a motor, a reciprocating screw, a sliding rod, a sliding rod, a connecting rod and a spoiler. The liquid nitrogen box is fixedly connected to the front of the transformer housing, and the air pump is fixedly connected to the side wall of the liquid nitrogen box. The air pump is electrically connected to the control panel. When the temperature sensor detects a high temperature, it sends an electrical signal to the control module, so that the control module can control the air pump to start.

[0008] According to the above technical solution, the air supply pipe passes through the liquid nitrogen tank and is fixedly connected at the penetration point. The air pump is connected to the air supply pipe. The air supply pipe is fixed with multiple groups of branch pipes. The diffusion head is fixedly connected to the upper end of the branch pipe of the air supply pipe. The motor is fixedly connected to the upper surface of the liquid nitrogen tank. The air drawn into the air supply pipe by the air pump flows through the liquid nitrogen tank to the diffusion head.

[0009] According to the above technical solution, the control module is electrically connected to the motor, the reciprocating screw is fixedly connected to the output end of the motor, the reciprocating screw passes through the right end of the sliding rod, and the penetration is in contact, a guide rod is fixed to the upper surface of the liquid nitrogen box, the guide rod passes through the left end of the sliding rod, and the penetration is slidably connected, the motor drives the reciprocating screw to rotate, and the sliding rod slides up and down.

[0010] According to the above technical solution, the sliding rod passes through the sliding rod and is slidably connected at the penetration point, the connecting rod is fixedly connected to the side wall of the sliding rod, the spoiler is rotatably connected to the front of the transformer housing, the side wall of the connecting rod away from the sliding rod is fixed with a limiting column, the limiting column passes through the side wall of the spoiler and is rotatably connected at the penetration point, the sliding rod slides up and down to drive the sliding rod, the connecting rod and the limiting column to move up and down, so that the spoiler rotates.

[0011] According to the above technical solution, the knocking device includes a sleeve, a torsion spring, a swing plate, a knocking rod, a cross plate, a filter plate, a fixed block and a connecting block. A fixed column is fixed on the front of the transformer housing. The fixed column passes through the sleeve and is rotatably connected at the penetration point. The fixed column passes through the torsion spring and is fixedly connected at the penetration point.

[0012] According to the above technical solution, the swing plate is fixedly connected to the outer wall of the sleeve, one end of the torsion spring is fitted to the swing plate, and the other end of the torsion spring is fitted to the side wall of the ceramic heat sink. The knocking rod is fixedly connected to the side wall of the swing plate, and the guide rod passes through the horizontal plate and is slidably connected at the penetration point. When the spoiler rotates, it pushes the swing plate to rotate, driving the knocking rod to knock on the ceramic heat sink.

[0013] According to the above technical solution, the horizontal plate is fixedly connected to the bottom surface of the sliding rod, the filter plate is hinged to the front surface of the transformer housing, the fixed block is fixedly connected to the upper surface of the horizontal plate, the connecting block is fixedly connected to the side wall of the fixed block, the connecting block passes through the side wall of the filter plate, and the penetration is fitted, and the sliding rod slides up and down to drive the horizontal plate to slide up and down.

[0014] According to the above technical solution, the air extraction device includes a sealing box, a first one-way valve, a second one-way valve, a piston rod, a sealing plate, a driven rod and a cover plate. The first one-way valve is fixedly connected to the side wall of the sealing box, and the first one-way valve passes through the side wall of the transformer housing and is fixedly connected at the penetration point.

[0015] According to the above technical solution, the second one-way valve is fixedly connected to the side wall of the sealing box, the piston rod is fixedly connected to the upper surface of the cross plate, the sealing plate is fixedly connected to the upper end of the piston rod, the driven rod is fixedly connected to the side wall of the piston rod, and the cover plate is hinged to the front of the transformer housing. When the piston rod slides up and down, it drives the driven rod to move up and down.

[0016] The present invention provides a new energy oil-immersed transformer based on a cooling protection device. It has the following beneficial effects:

[0017] 1. The present invention is provided with a cooling device, which detects the temperature inside the transformer housing through a temperature sensor. When the temperature sensor detects that the internal temperature of the transformer housing is too high, it sends an electrical signal to the control module, so that the control module controls the air extraction pump to start, and cooperates with the liquid nitrogen box to cool the drawn air. The cooled air is blown out from the diffuser head through the air supply pipe, and heat exchange is performed on both sides of the ceramic heat sink, thereby further improving the cooling speed of the ceramic heat sink, solving the problem that the existing ceramic heat sink has a slow heat dissipation efficiency of the transformer by self-cooling; when the temperature sensor detects that the temperature inside the transformer housing is too high, it also causes the control module to control the motor to start, so that the motor drives the reciprocating screw rod to rotate, and cooperates with the sliding rod, the sliding rod and the connecting plate to drive the spoiler to rotate. When the spoiler rotates, it turbules the cold air blown out of the diffuser head, so that the cold air fully contacts the surface of the ceramic heat sink, thereby further improving the heat dissipation effect of the ceramic heat sink, and solving the problem that the contact area between the ceramic heat sink and the cold air is small, resulting in uneven heat dissipation of the ceramic heat sink.

[0018] 2. The present invention is provided with a knocking device. When the spoiler disturbs the cold air, the swing plate is pushed to swing by the rotation of the spoiler, which drives the knocking rod to rotate, so that the knocking rod repeatedly knocks the ceramic heat sink, thereby knocking off the dirt on the ceramic heat sink and other debris that is easily wrapped on the outer surface of the ceramic heat sink, solving the problem that the ceramic heat sink is exposed to the outside for a long time and is easily blocked from contact with the outside air by dirt and other debris, thereby affecting the heat dissipation effect; while disturbing the cold air, the sliding rod drives the cross plate to slide up and down, and cooperates with the fixed block and the connecting block to drive the filter plate to swing, so that the filter plate can knock down the filtered debris, thereby avoiding the accumulation of debris on the filter plate and affecting the output of cold air, and solving the problem that the debris is easily accumulated on the filter plate after being knocked off, causing the filter plate to be blocked.

[0019] 3. The present invention is provided with an exhaust device, which drives the piston rod to slide up and down by sliding the horizontal plate up and down. When sliding downward, the hot air is extracted from the first one-way valve into the sealed box, reducing the pressure inside the transformer shell increased due to the expansion of the hot air. When sliding upward, the hot air is squeezed out of the sealed box through the second one-way valve, thereby achieving the purpose of pressure relief inside the transformer shell, solving the problem of air expansion inside the transformer shell due to temperature increase; when the piston rod slides upward, it drives the driven rod to move upward, intermittently lifting the cover plate, promoting the discharge of air that has exchanged excess heat with the porcelain heat sink, avoiding the air that absorbs excess heat from blocking the flow of subsequent cold air, allowing the cold air to flow out directly, and at the same time avoiding the cold air from being directly discharged and the contact time with the porcelain heat sink being too short, thereby improving the utilization rate of the cold air and solving the problem of low cold air utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the full cross-sectional structure of the present invention;

[0022] Figure 3 Schematic diagram of the filter plate structure of the present invention;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the local enlarged structure of area A;

[0024] Figure 5 This is a structural schematic diagram of the sealing box of the present invention;

[0025] Figure 6 This is a schematic diagram of the cover structure of the present invention;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the locally enlarged structure of area B.

[0027] In the figure: 1. Transformer housing; 2. Coil; 3. Porcelain insulator; 4. Porcelain heat sink; 5. Temperature sensor; 61. Liquid nitrogen tank; 62. Vacuum pump; 63. Gas pipe; 64. Diffuser; 65. Motor; 66. Reciprocating screw; 67. Sliding rod; 68. Sliding rod; 69. Connecting rod; 610. Spoiler; 71. Sleeve; 72. Torsion spring; 73. Swing plate; 74. Knocking rod; 75. Cross plate; 76. Filter plate; 77. Fixed block; 78. Connecting block; 81. Sealing box; 82. First one-way valve; 83. Second one-way valve; 84. Piston rod; 85. Sealing plate; 86. Follower rod; 87. Cover plate. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 7One embodiment of the present invention is: a new energy oil-immersed transformer based on a cooling protection device, including a transformer shell 1, a coil 2 is fixed inside the transformer shell 1, a porcelain insulator 3 is fixed on the upper surface of the coil 2, the porcelain insulator 3 passes through the upper surface of the transformer shell 1, and is fixedly connected at the penetration point, an oil pillow is provided on the left side of the transformer shell 1, the oil pillow is connected to the transformer shell 1, a porcelain heat sink 4 is fixed on the front of the transformer shell 1, a temperature sensor 5 is fixed on the upper surface of the transformer shell 1, a control module 9 is fixed on the front of the transformer shell 1, the control module 9 and the temperature sensor 5 are electrically connected, the detection head of the temperature sensor 5 passes through the upper surface of the transformer shell 1, and is fixedly connected at the penetration point, and a cooling device for conveniently dissipating heat from the porcelain heat sink 4 is provided on the front of the transformer shell 1.

[0030] Among them, the cooling device includes a liquid nitrogen tank 61, an air pump 62, an air pipe 63, a diffusion head 64, a motor 65, a reciprocating screw 66, a sliding rod 67, a sliding rod 68, a connecting rod 69 and a spoiler 610. The liquid nitrogen tank 61 is fixedly connected to the front of the transformer housing 1, and the air pump 62 is fixedly connected to the side wall of the liquid nitrogen tank 61. The air pump 62 is electrically connected to the control module 9. When the temperature sensor 5 detects that the temperature inside the transformer is too high, it sends an electrical signal to the control module 9 to control the air pump 62 to start. The air pipe 63 passes through the liquid nitrogen tank 61 and is fixedly connected at the penetration point. The air pump 62 is connected to the air pipe 63. After the air pump 62 is started, it sucks in the outside air and transmits it to the air pipe 63. Since the air pipe 63 passes through the liquid nitrogen tank 61, Therefore, the outside of the gas pipe 63 is filled with liquid nitrogen to cool the air in the gas pipe 63. Multiple groups of branch pipes are fixed on the outer wall of the gas pipe 63. The diffusion head 64 is fixedly connected to the upper end of the branch pipe of the gas pipe 63. As the vacuum pump 62 continuously extracts air, the cooled air is transmitted from the branch pipe of the gas pipe 63 to the diffusion head 64, and blown out from the diffusion head 64 to cool the porcelain heat sink 4 above it. The motor 65 is fixedly connected to the upper surface of the liquid nitrogen tank 61. The control module 9 is electrically connected to the motor 65. When the temperature sensor 5 detects that the internal temperature of the transformer is too high, the control module 9 can also control the motor 65 to start. The reciprocating screw 66 is fixedly connected to the output end of the motor 65. When the motor 65 starts, it drives the reciprocating screw 66 to rotate. The screw rod 66 passes through the right end of the sliding rod 67, and the penetration is fitted. When the reciprocating screw rod 66 rotates, the sliding rod 67 slides up and down on the outer wall of the reciprocating screw rod 66. A guide rod is fixed on the upper surface of the liquid nitrogen box 61. The guide rod passes through the left end of the sliding rod 67 and is slidably connected at the penetration. The sliding rod 67 passes through the sliding rod 68 and is slidably connected at the penetration. When the sliding rod 67 slides up and down, it drives the sliding rod 68 to move up and down. The connecting rod 69 is fixedly connected to the side wall of the sliding rod 68. When the sliding rod 68 moves up and down, it drives the connecting rod 69 to move up and down. The spoiler 610 is rotatably connected to the front of the transformer housing 1. The connecting rod 69 is fixed to the side wall away from the sliding rod 68. A limiting column is fixed on the side wall. The limiting column passes through the side wall of the spoiler 610 and is rotatably connected at the penetration. When the connecting rod When 69 moves up and down, it drives the limit column and the spoiler 610 to rotate around the central axis of the spoiler 610. The rotation of the spoiler 610 disturbs the cold air blown out of the diffusion head 64. The cooling device detects the temperature inside the transformer housing 1 through the temperature sensor 5. When the temperature sensor 5 detects that the internal temperature of the transformer housing 1 is too high, the control module 9 can control the air pump 62 to start, and cooperate with the liquid nitrogen tank 61 to cool the drawn air. The cooled air is blown out from the diffusion head 64 through the air pipe 63, and heat is exchanged with both sides of the ceramic heat sink 4, thereby further improving the cooling speed of the ceramic heat sink 4, solving the problem that the existing ceramic heat sink 4 has a slow heat dissipation efficiency in the transformer by self-cooling.

[0031] When the temperature sensor 5 detects that the temperature inside the transformer housing 1 is too high, it can also control the motor 65 to start, so that the motor 65 drives the reciprocating screw 66 to rotate, and cooperates with the sliding rod 67, the sliding rod 68 and the connecting rod 69 to drive the spoiler 610 to rotate. When the spoiler 610 rotates, the cold air blown out by the diffusion head 64 is disturbed, so that the cold air fully contacts the surface of the ceramic heat sink 4, thereby further improving the heat dissipation effect of the ceramic heat sink 4, and solving the problem that the contact area between the ceramic heat sink 4 and the cold air is small, resulting in uneven heat dissipation of the ceramic heat sink 4.

[0032] When this embodiment is working: when the temperature sensor 5 detects that the temperature inside the transformer is too high, it sends an electrical signal to the control module 9. After receiving the signal, the control module controls the vacuum pump 62 to start, sucks in the outside air, and transmits it to the air pipe 63. Since the air pipe 63 runs through the liquid nitrogen tank 61, the outside of the air pipe 63 is filled with liquid nitrogen, and the air in the air pipe 63 is cooled. The vacuum pump 62 continuously pumps air, and the cooled air is transmitted from the branch pipe of the air pipe 63 to the diffusion head 64, and is blown out from the diffusion head 64 to cool the porcelain heat sink 4 above it. When the temperature sensor 5 detects that the temperature inside the transformer is too high, it can also enable the control module 9 to control the motor 65 to start, and the motor 65 starts to drive the reciprocating screw rod 66 rotates, and since the sliding rod 67 is guided by the guide rod, the sliding rod 67 cannot rotate with the reciprocating screw rod 66. Therefore, when the reciprocating screw rod 66 rotates, the sliding rod 67 slides up and down on the outer wall of the reciprocating screw rod 66. When the sliding rod 67 slides up and down, it drives the sliding rod 68 to move up and down. When the sliding rod 68 moves up and down, it drives the connecting rod 69 to move up and down. The limiting column on the side wall of the connecting rod 69 passes through the side wall of the spoiler 610, and the spoiler 610 is rotatably connected to the front side of the transformer housing 1. Therefore, when the connecting rod 69 moves up and down, it drives the limiting column and the spoiler 610 to rotate around the central axis of the spoiler 610, and the spoiler 610 rotates to disturb the cold air blown out by the diffusion head 64.

[0033] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, a knocking device for improving the heat dissipation efficiency is provided above the cooling device. The knocking device includes a sleeve 71, a torsion spring 72, a swinging plate 73, a knocking rod 74, a cross plate 75, a filter plate 76, a fixed block 77 and a connecting block 78. A fixed column is fixed to the front of the transformer housing 1. The fixed column passes through the sleeve 71 and is rotatably connected at the penetration point. The fixed column passes through the torsion spring 72 and is fixedly connected at the penetration point. The swinging plate 73 is fixedly connected to the outer wall of the sleeve 71. The connecting rod 69 moves up and down to drive the spoiler 610 to rotate. When the spoiler 610 rotates to the swinging plate 73, it pushes the swinging plate 73 around the central axis of the fixed column. When the spoiler 610 is rotated to disengage from the swing plate 73, the swing plate 73 is reset by the elastic force of the torsion spring 72, and the knocking rod 74 is fixedly connected to the side wall of the swing plate 73. The rotation of the swing plate 73 drives the knocking rod 74 to move, knocking the ceramic heat sink 4, knocking off the dirt and other debris covering the surface of the ceramic heat sink 4 that may be stuck on the ceramic heat sink 4, and the guide rod passes through the cross plate 75 and is slidably connected at the penetration point. The cross plate 75 is fixedly connected to the bottom surface of the sliding rod 67, and the sliding rod 67 slides up and down at the same time When the cross plate 75 slides up and down, it also drives the cross plate 75 to slide up and down. The filter plate 76 is hinged to the front of the transformer housing 1. The fixing block 77 is fixedly connected to the upper surface of the cross plate 75. The connecting block 78 is fixedly connected to the side wall of the fixing block 77. When the cross plate 75 slides up and down, it drives the fixing block 77 and the connecting block 78 on its upper surface to move up and down. The connecting block 78 penetrates the side wall of the filter plate 76 and fits in the penetration. Since the connecting block 78 penetrates the filter plate 76 away from one end of the hinge between the filter plate 76 and the transformer housing 1, the connecting block 78 also drives the filter plate 76 to rotate around the hinge between the filter plate 76 and the transformer housing 1 when it moves up and down. The filter plate 76 intercepts the debris that is knocked down. When the cross plate 75 slides down When the filter plate 76 is moved, the fixed block 77 and the connecting block 78 on the upper surface of the horizontal plate 75 drive the filter plate 76 to swing downward, and the debris on the upper surface of the filter plate 76 is knocked down. When the horizontal plate 75 slides upward, the filter plate 76 is driven to reset. While the spoiler 610 disturbs the cold air, the knocking device drives the swing plate 73 to swing through the rotation of the spoiler 610, driving the knocking rod 74 to rotate, so that the knocking rod 74 repeatedly knocks the ceramic heat sink 4, thereby knocking off the dirt and other debris that are easily wrapped on the outer surface of the ceramic heat sink 4, solving the problem that the ceramic heat sink 4 is exposed to the outside for a long time and is easily blocked from contact with the outside air by dirt and other debris, thereby affecting the heat dissipation effect.

[0034] While disturbing the cold air, the sliding rod 67 drives the cross plate 75 to slide up and down, and cooperates with the fixed block 77 and the connecting block 78 to drive the filter plate 76 to swing, so that the filter plate 76 can knock down the filtered debris, thereby preventing the debris from accumulating on the filter plate 76 and affecting the output of cold air. This solves the problem that debris is easily accumulated on the filter plate 76 after being knocked down, thereby affecting the delivery of cold air.

[0035] The front of the transformer housing 1 is provided with an exhaust device for relieving the pressure inside the transformer housing 1. The exhaust device includes a sealing box 81, a first one-way valve 82, a second one-way valve 83, a piston rod 84, a sealing plate 85, a driven rod 86 and a cover plate 87. The first one-way valve 82 is fixedly connected to the side wall of the sealing box 81. The first one-way valve 82 passes through the side wall of the transformer housing 1 and is fixedly connected at the penetration point. The gas can only flow from the inside of the transformer housing 1 to the inside of the sealing box 81 in the first one-way valve 82. The second one-way valve 83 is fixedly connected to the side wall of the sealing box 81. The gas The fluid can only flow from the inside of the sealed box 81 to the outside of the sealed box 81 in the second one-way valve 83. The piston rod 84 is fixedly connected to the upper surface of the cross plate 75. When the cross plate 75 slides downward, the piston rod 84 on its upper surface also slides downward. The sealing plate 85 is fixedly connected to the upper end of the piston rod 84. The piston rod 84 slides downward to drive the sealing plate 85 to slide downward. At this time, the air pressure inside the sealed box 81 is reduced. The first one-way valve 82 draws the air with a higher temperature inside the transformer housing 1 into the sealed box 81, reducing the heat expansion of the air inside the transformer housing 1. The pressure exerted by the transformer housing 1 causes the horizontal plate 75 to slide upward, driving the piston rod 84 and the sealing plate 85 to slide upward. At this time, the air pressure inside the sealing box 81 increases, and the second one-way valve 83 squeezes the air inside the sealing box 81 out of the sealing box 81. The driven rod 86 is fixedly connected to the side wall of the piston rod 84, and the cover plate 87 is hinged to the front of the transformer housing 1. When the piston rod 84 slides upward, it also drives the driven rod 86 to move upward, and the driven rod 86 lifts the cover plate 87 to open. When the piston rod 84 slides downward, it drives the driven rod 86 to move downward. The driven rod 86 no longer applies thrust to the cover plate 87. At the same time, the cover plate 87 rotates downward under its own gravity and closes again. The exhaust device drives the piston rod 84 to slide up and down through the horizontal plate 75. When sliding downward, the hot air is extracted from the first one-way valve 82 into the sealing box 81, reducing the pressure inside the transformer housing 1 caused by the expansion of the hot air. When sliding upward, the hot air is squeezed out of the sealing box 81 through the second one-way valve 83, thereby achieving the purpose of relieving the pressure inside the transformer housing 1 and solving the problem of the air inside the transformer housing 1 expanding due to the increase in temperature.

[0036] When the piston rod 84 slides upward, it drives the driven rod 86 to move upward, intermittently lifting the cover plate 87, promoting the discharge of air that has exchanged excess heat with the ceramic heat sink 4, and preventing the air that has absorbed excess heat from blocking the subsequent flow of cold air, allowing the cold air to flow out directly. At the same time, it prevents the cold air from being discharged directly and the contact time with the ceramic heat sink 4 from being too short, thereby improving the utilization rate of the cold air and solving the problem of low utilization rate of the cold air.

[0037] When the present embodiment is working, the connecting rod 69 moves up and down to drive the spoiler 610 to rotate. When the spoiler 610 rotates to the swing plate 73, the swing plate 73 is pushed to rotate around the central axis of the fixed column. The swing plate 73 rotates and drives the knocking rod 74 to move, knocking the ceramic heat sink 4, knocking off the dirt and other debris covering the surface of the ceramic heat sink 4 that may be sticky on the ceramic heat sink 4. While the swing plate 73 rotates, the torsion spring 72 is compressed. When the spoiler 610 rotates to disengage from the swing plate 73, the swing plate 73 is reset by the elastic force of the torsion spring 72, and the sliding rod 67 slides up and down while also driving the cross plate 75 to As the cross plate 75 slides up and down, the fixed block 77 and the connecting block 78 on its upper surface move up and down. Since the connecting block 78 passes through the filter plate 76 and is away from one end of the hinged joint between the filter plate 76 and the transformer housing 1, the connecting block 78 also drives the filter plate 76 to rotate around the hinged joint between the filter plate 76 and the transformer housing 1 when it moves up and down, and the filter plate 76 intercepts the knocked-down debris. When the cross plate 75 slides downward, the fixed block 77 and the connecting block 78 on the upper surface of the cross plate 75 drive the filter plate 76 to swing downward, knocking down the debris on the upper surface of the filter plate 76. When the cross plate 75 slides upward, the filter plate 76 is driven to reset.

[0038] When the cross plate 75 slides downward, the piston rod 84 on its upper surface also slides downward, and the piston rod 84 slides downward, driving the sealing plate 85 to slide downward. At this time, the air pressure inside the sealing box 81 decreases, and the first one-way valve 82 draws the air with a higher temperature inside the transformer housing 1 into the sealing box 81, reducing the pressure exerted on the transformer housing 1 by the heat expansion of the air inside the transformer housing 1. When the cross plate 75 slides upward, it drives the piston rod 84 and the sealing plate 85 to slide upward. At this time, the air pressure inside the sealing box 81 increases, and the second one-way valve 83 squeezes the air inside the sealing box 81 out of the sealing box 81. When the piston rod 84 slides upward, it also drives the driven rod 86 to move upward. The driven rod 86 pushes the cover plate 87 up and opens. When the piston rod 84 slides downward, it drives the driven rod 86 to move downward. The driven rod 86 no longer applies thrust to the cover plate 87, and the cover plate 87 rotates downward under its own gravity and closes again.

[0039] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A new energy oil-immersed transformer based on a cooling protection device, comprising a transformer housing (1), characterized in that: A coil (2) is fixed inside the transformer housing (1), a porcelain insulator (3) is fixed on the upper surface of the coil (2), the porcelain insulator (3) penetrates the upper surface of the transformer housing (1) and is fixedly connected at the penetration point, an oil pillow is provided on the left side of the transformer housing (1), the oil pillow is connected to the transformer housing (1), a porcelain heat sink (4) is fixed on the front of the transformer housing (1), a temperature sensor (5) is fixed on the upper surface of the transformer housing (1), a control panel (9) is fixed on the front of the transformer housing (1), the temperature sensor (5) and the control panel (9) are electrically connected, a detection head of the temperature sensor (5) penetrates the upper surface of the transformer housing (1) and is fixedly connected at the penetration point, a cooling device for facilitating heat dissipation of the porcelain heat sink (4) is provided on the front of the transformer housing (1), a knocking device for facilitating improving heat dissipation efficiency is provided above the cooling device, and an exhaust device for facilitating pressure relief inside the transformer housing (1) is provided on the front of the transformer housing (1); The cooling device comprises a liquid nitrogen tank (61), an air pump (62), an air pipe (63), a diffusion head (64), a motor (65), a reciprocating screw (66), a sliding rod (67), a sliding rod (68), a connecting rod (69) and a spoiler (610), wherein the liquid nitrogen tank (61) is fixedly connected to the front of the transformer housing (1), the air pump (62) is fixedly connected to the side wall of the liquid nitrogen tank (61), and the air pump (62) is electrically connected to the control panel (9).

2. The new energy oil-immersed transformer based on the cooling protection device according to claim 1 is characterized in that: The gas delivery pipe (63) passes through the liquid nitrogen tank (61) and is fixedly connected at the penetration point. The air pump (62) is in communication with the gas delivery pipe (63). The gas delivery pipe (63) is fixed with multiple groups of branch pipes. The diffusion head (64) is fixedly connected to the upper end of the branch pipe of the gas delivery pipe (63). The motor (65) is fixedly connected to the upper surface of the liquid nitrogen tank (61).

3. The new energy oil-immersed transformer based on the cooling protection device according to claim 2 is characterized in that: The motor (65) is electrically connected to the control panel (9), the reciprocating screw (66) is fixedly connected to the output end of the motor (65), the reciprocating screw (66) passes through the right end of the sliding rod (67), and the penetration is in contact with each other, and a guide rod is fixed on the upper surface of the liquid nitrogen box (61), the guide rod passes through the left end of the sliding rod (67), and the penetration is in sliding connection.

4. The new energy oil-immersed transformer based on the cooling protection device according to claim 3 is characterized in that: The sliding rod (67) passes through the sliding rod (68) and is slidably connected at the penetration point. The connecting rod (69) is fixedly connected to the side wall of the sliding rod (68). The spoiler (610) is rotatably connected to the front of the transformer housing (1). The connecting rod (69) is fixed with a limiting column away from the side wall of the sliding rod (68). The limiting column passes through the side wall of the spoiler (610) and is rotatably connected at the penetration point.

5. The new energy oil-immersed transformer based on the cooling protection device according to claim 4 is characterized in that: The knocking device comprises a sleeve (71), a torsion spring (72), a swing plate (73), a knocking rod (74), a transverse plate (75), a filter plate (76), a fixed block (77) and a connecting block (78); a fixed column is fixed to the front of the transformer housing (1); the fixed column passes through the sleeve (71) and is rotatably connected at the penetration point; the fixed column passes through the torsion spring (72) and is fixedly connected at the penetration point.

6. The new energy oil-immersed transformer based on the cooling protection device according to claim 5 is characterized in that: The swing plate (73) is fixedly connected to the outer wall of the sleeve (71), one end of the torsion spring (72) is in contact with the swing plate (73), and the other end of the torsion spring (72) is in contact with the side wall of the ceramic heat sink (4). The knocking rod (74) is fixedly connected to the side wall of the swing plate (73), and the guide rod passes through the horizontal plate (75) and is slidably connected at the penetration point.

7. The new energy oil-immersed transformer based on the cooling protection device according to claim 6 is characterized in that: The transverse plate (75) is fixedly connected to the bottom surface of the sliding rod (67), the filter plate (76) is hinged to the front surface of the transformer housing (1), the fixed block (77) is fixedly connected to the upper surface of the transverse plate (75), the connecting block (78) is fixedly connected to the side wall of the fixing block (77), and the connecting block (78) passes through the side wall of the filter plate (76), and the penetration portion is in contact with each other.

8. The new energy oil-immersed transformer based on the cooling protection device according to claim 1 is characterized in that: The air extraction device comprises a sealing box (81), a first one-way valve (82), a second one-way valve (83), a piston rod (84), a sealing plate (85), a driven rod (86) and a cover plate (87), wherein the first one-way valve (82) is fixedly connected to a side wall of the sealing box (81), and the first one-way valve (82) penetrates the side wall of the transformer housing (1) and is fixedly connected at the penetration point.

9. The new energy oil-immersed transformer based on the cooling protection device according to claim 8, characterized in that: The second one-way valve (83) is fixedly connected to the side wall of the sealing box (81), the piston rod (84) is fixedly connected to the upper surface of the transverse plate (75), the sealing plate (85) is fixedly connected to the upper end of the piston rod (84), the driven rod (86) is fixedly connected to the side wall of the piston rod (84), and the cover plate (87) is hinged to the front of the transformer housing (1).

Images