An outdoor underground substation capable of preventing overheating damage

Abstract

The present invention discloses an outdoor underground substation that can prevent overheating damage, comprising a ground box, the top of which is fixedly connected to a signboard, a heat dissipation cavity formed on the front of the signboard, a heat dissipation channel formed inside the heat dissipation cavity extending to the back of the signboard, a heat dissipation baffle formed on the front of the heat dissipation cavity, and a heat sink fixedly installed in the heat dissipation channel; as an optimization, an auxiliary mechanism is provided in the heat sink to accelerate the heat dissipation of the substation; as an optimization, a cooling device and a ventilation mechanism are fixedly installed in the heat dissipation cavity to prevent the substation from overheating damage; as an optimization, the heat sink includes a heat dissipation main frame and heat dissipation fins, the heat dissipation fins are oil-cooled, and circulation ducts are provided in both the heat dissipation main frame and the heat dissipation fins. This outdoor underground substation that can prevent overheating damage increases the heat dissipation area of ​​the heat sink by setting the heat dissipation wall in a stepped shape, thereby making it more fully in contact with the air, accelerating the heat dissipation speed, and ensuring the normal operation of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation of underground substations, and in particular to an outdoor underground substation capable of preventing overheating and damage. Background Art

[0002] Since traditional substations have more equipment, including transformer rooms, high-voltage rooms and low-voltage rooms, and occupy a large area, in order to solve this problem, an underground substation has emerged that places the transformer equipment underground.

[0003] Because the underground substation is located underground, the heat dissipation effect is poor and it is easily damaged by excessive temperature. Therefore, we propose an outdoor underground substation that can prevent overheating damage to solve this problem. Summary of the Invention

[0004] In order to overcome the problem of poor heat dissipation and easy damage due to excessive temperature, the purpose of the present invention is to provide an outdoor underground substation that can prevent overheating and has good heat dissipation effect.

[0005] The present invention adopts the following technical solution to achieve the technical objectives: an outdoor underground substation capable of preventing overheating damage, comprising a ground box, the top of which is fixedly connected to a signboard, a heat dissipation cavity defined on the front of the signboard, a heat dissipation channel defined within the heat dissipation cavity extending to the back of the slot signboard, a heat dissipation baffle connected to the front of the heat dissipation cavity, and a heat sink fixedly installed within the heat dissipation channel;

[0006] As an optimization, an auxiliary mechanism is provided in the heat sink to accelerate the heat dissipation of the substation;

[0007] As an optimization, cooling equipment and ventilation mechanisms are fixedly installed in the heat dissipation cavity to prevent the substation from being damaged by overheating.

[0008] As an optimization, the heat sink includes a heat sink main frame and heat sink fins. The heat sink is oil-cooled. Flow pipes are opened in the heat sink main frame and the heat sink fins, and the pipes are filled with cooling oil. The heat sink extends into the ground box.

[0009] As an optimization, the auxiliary mechanism includes a heat dissipation wall fixedly connected to the side of the heat dissipation slice, the surface of the heat dissipation wall is clamped with the heat dissipation wing, a slot is provided on the surface of the heat dissipation wall, two symmetrical baffles are fixedly connected at the opening of the slot, the side of the heat dissipation wing is fixedly connected to a connecting rod extending into the slot, and storage slots are provided at the front and rear ends of the connecting rod, a card plate is inserted inside the storage slot, and a compression spring is fixedly connected between the card plate and the inner wall of the storage slot.

[0010] As an optimization, the heat dissipation wall is arranged in a stepped shape, and each step is provided with a heat dissipation wing, and the heat dissipation wing is attached to the stepped surface of the heat dissipation wall;

[0011] As an optimization, the length of the heat dissipation fin is greater than the length of the stepped surface of a single heat dissipation wall, the length of the heat dissipation fin is greater than the spacing between the heat dissipation slices, and the deflection angle of the heat dissipation fin does not exceed forty-five degrees.

[0012] As an optimization, the heat dissipation wing is divided into two parts, the head and the tail, and the two parts are made of different materials;

[0013] The head is the connection between the heat sink and the heat sink wall. It is made of two memory metals with different thermal expansion coefficients pressed together.

[0014] The tail is the part where the heat sink fins fit into the stepped surface of the heat sink wall, and is made of aluminum.

[0015] As an optimization, the two metal materials used in the heat dissipation wing head are arranged up and down, and the thermal expansion coefficient of the metal material on the side close to the heat dissipation wall is greater than that of the metal material on the other side.

[0016] As an optimization, the length of the card slot is greater than the sum of the widths of the baffle and the card plate, the width of the connecting rod is less than the distance between the two baffles, the outer surface of the baffle is designed to be inclined toward one end, and the baffle is connected to the inner wall of the card slot on the side away from the heat sink;

[0017] As an optimization, the sum of the lengths of the compression spring and the clamping plate is greater than the distance between the two baffles.

[0018] As an optimization, the cooling device includes a water tank fixedly connected to the back of the signboard;

[0019] As an optimization, the cooling device further includes a sprinkler head fixedly connected to the inner wall of the heat dissipation cavity;

[0020] As an optimization, the water tank and the sprinkler head are identical, and a temperature controller is provided in the sprinkler head.

[0021] As an optimization, the ventilation mechanism includes a mounting plate fixedly connected to the heat dissipation cavity and the heat dissipation channel interface, a mounting opening is provided on the top of the mounting plate, an adjustment plate is fixed inside the mounting opening, an adjustment opening is provided on the surface of the adjustment plate, and a rotating plate is rotatably connected to the top of the adjustment plate;

[0022] As an optimization, the ventilation mechanism further includes an extension tube fixedly connected to the back of the heat sink, and the top of the extension tube is movably connected to a control rod that passes through the adjustment plate and the rotating plate.

[0023] As an optimization, the shape and size of the rotating plate correspond to the adjustment port, a through hole is provided at the center of the rotating plate and the adjustment plate, and a thread is provided in the through hole of the rotating plate;

[0024] As an optimization, the extension tube is located at the highest point of the heat sink, the extension tube is communicated with the heat sink, a slider corresponding to the thread is provided on the outside of the control rod, and a negative pressure fan is provided in the heat dissipation channel.

[0025] The present invention has the following beneficial effects:

[0026] 1. This outdoor underground substation, which can prevent overheating damage, increases the heat dissipation area of ​​the heat sink by setting the heat dissipation wall into a stepped shape, making it more fully in contact with the air, accelerating the heat dissipation speed and ensuring the normal operation of the equipment.

[0027] 2. This outdoor underground substation, which can prevent overheating damage, maximizes the use of the space between the heat dissipation slices by arranging the heat dissipation wings at an angle, making it possible to install more heat dissipation wings and further improve the heat dissipation effect.

[0028] 3. This outdoor underground substation, which can prevent overheating damage, absorbs a large amount of heat when the heat sink temperature is too high, causing the metal material at its head to expand due to the heat. Since the metal expansion coefficient on one side is large and the expansion coefficient on the other side is small, the pulling forces on the two sides are different, causing the heat sink to bend toward the side with the smaller expansion coefficient and in the opposite direction away from the heat sink wall. This makes the heat sink evenly distributed among the heat sink fins, doubling the original heat dissipation area, greatly improving the heat dissipation effect and preventing equipment overheating.

[0029] When the temperature drops, the metal material at the head of the heat sink returns to its original shape, and the heat sink fits onto the heat sink wall again, thus folding and hiding part of the heat sink area, preventing the entire heat sink area from being exposed to the air for a long time, being contaminated by a large amount of dust, and affecting the heat dissipation efficiency.

[0030] 4. This outdoor underground substation, which can prevent overheating damage, has a heat dissipation wing that is initially restricted by the baffle and the card plate and cannot bend. When the heat dissipation wing absorbs heat, its head generates a bending force, causing the heat dissipation wing to bend. The connecting rod drives the card plate to slide in the card slot. When the card plate moves out of the range of the baffle, the heat dissipation wing bends and the connecting rod is pulled out of the card slot.

[0031] When resetting, the heat sink wing presses the connecting rod and the card plate toward the card slot. The card plate is guided by the inclined surface on the top of the baffle and stored in the storage slot. After it penetrates into the card slot, the compression spring pushes the card plate out and locks the heat sink wing again.

[0032] This prevents the heat sink from unfolding and collecting too much dust within the controllable temperature range, while reducing the number and amplitude of deformation of the heat sink and extending its service life.

[0033] 5. This outdoor underground substation that can prevent overheating damage, when the auxiliary mechanism cannot be adjusted and the temperature continues to rise, the sprinkler head sprays coolant onto the heat sink. At the same time, due to the high oil temperature in the heat sink, the volume expands and overflows into the extension pipe, thus pushing the control rod to move upward. The control rod drives the rotating plate to rotate, so that the development area of ​​the adjustment port becomes larger. In this way, the air outlet speed is greater than the air inlet speed, which accelerates the heat dissipation. At the same time, the pressure in the heat dissipation cavity becomes lower, which reduces the boiling point of the coolant, increases the evaporation efficiency, and takes away too much heat, further protecting the working safety of the substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the exterior of an outdoor underground substation that can prevent overheating damage according to the present invention.

[0035] Figure 2 This is a schematic diagram of the interior of the heat dissipation cavity of an outdoor underground substation that can prevent overheating damage according to the present invention.

[0036] Figure 3 The figure is a schematic diagram of the auxiliary mechanism of the outdoor underground substation that can prevent overheating damage according to the present invention.

[0037] Figure 4 This is a top view of the card slot of an outdoor underground substation that can prevent overheating damage according to the present invention.

[0038] Figure 5 The figure is a side view of the card slot of an outdoor underground substation that can prevent overheating damage according to the present invention.

[0039] Figure 6 The figure is a schematic diagram of the interior of the connecting rod of an outdoor underground substation that can prevent overheating damage according to the present invention.

[0040] Figure 7 The figure is a side cross-sectional schematic diagram of an outdoor underground substation capable of preventing overheating damage according to the present invention.

[0041] Figure 8 This is a top view of the outdoor underground substation that can prevent overheating damage according to the present invention.

[0042] Figure 9 The invention provides an outdoor underground substation capable of preventing overheating damage. Figure 7 Partially enlarged image.

[0043] Figure 10 The invention provides an outdoor underground substation capable of preventing overheating damage. Figure 9 B is an enlarged view.

[0044] Figure 11 The invention provides an outdoor underground substation capable of preventing overheating damage. Figure 8 A is an enlarged view.

[0045] In the figure: 1. Floor box; 2. Stand; 3. Heat dissipation cavity; 4. Heat dissipation channel; 5. Heat dissipation baffle; 6. Heat sink; 61. Heat dissipation main frame; 62. Heat dissipation fin; 7. Auxiliary mechanism; 71. Heat dissipation wall; 72. Heat dissipation wing; 73. Card slot; 74. Baffle; 75. Connecting rod; 76. Storage slot; 77. Card plate; 78. Compression spring; 8. Cooling equipment; 81. Water tank; 82. Sprinkler head; 9. Ventilation mechanism; 91. Mounting plate; 92. Mounting port; 93. Adjustment plate; 94. Adjustment port; 95. Rotating plate; 96. Extension pipe; 97. Control rod. DETAILED DESCRIPTION

[0046] 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.

[0047] Example 1

[0048] See also Figure 1-6 An outdoor underground substation that can prevent overheating damage includes a ground box 1, the top of the ground box 1 is fixedly connected to a signboard 2, a heat dissipation cavity 3 is defined on the front of the signboard 2, a heat dissipation channel 4 is defined inside the heat dissipation cavity 3 and extends to the back of the signboard 2, a heat dissipation baffle 5 is clamped on the front of the heat dissipation cavity 3, and a heat sink 6 is fixedly installed in the heat dissipation channel 4;

[0049] An auxiliary mechanism 7 for accelerating heat dissipation of the substation is provided in the heat sink 6;

[0050] A cooling device 8 and a ventilation mechanism 9 are fixedly installed in the heat dissipation cavity 3 to prevent the substation from being damaged by overheating.

[0051] The heat sink 6 includes a heat sink main frame 61 and heat sink fins 62. The heat sink 6 is oil-cooled. Flow pipes are provided in the heat sink main frame 61 and the heat sink fins 62, and the pipes are filled with cooling oil. The heat sink 6 extends into the floor box 1.

[0052] The auxiliary mechanism 7 includes a heat dissipation wall 71 fixedly connected to the side of the heat dissipation segment 62, the surface of the heat dissipation wall 71 is clamped with the heat dissipation wing 72, a card slot 73 is provided on the surface of the heat dissipation wall 71, and two symmetrical baffles 74 are fixedly connected at the opening of the card slot 73. The side of the heat dissipation wing 72 is fixedly connected to a connecting rod 75 extending into the card slot 73. The front and rear ends of the connecting rod 75 are provided with a storage groove 76. The interior of the storage groove 76 is plugged with a card plate 77, and a compression spring 78 is fixedly connected between the card plate 77 and the inner wall of the storage groove 76.

[0053] Further:

[0054] The heat dissipation wall 71 is arranged in a stepped shape, and each step has a heat dissipation wing 72, which is attached to the stepped surface of the heat dissipation wall 71;

[0055] This increases the heat dissipation area of ​​the heat sink 6, allowing it to come into more complete contact with the air, speeding up the heat dissipation speed and ensuring the normal operation of the equipment.

[0056] Further:

[0057] The length of the heat dissipation fin 72 is greater than the length of the stepped surface of a single heat dissipation wall 71 , the length of the heat dissipation fin 72 is greater than the spacing between the heat dissipation fins 62 , and the deflection angle of the heat dissipation fin 72 does not exceed forty-five degrees.

[0058] By arranging the heat dissipation wings 72 at an angle, the space between the heat dissipation slices 62 is utilized to the maximum extent, so that more heat dissipation wings 72 can be installed, further improving the heat dissipation effect.

[0059] The heat dissipation wing 72 is divided into two parts, a head part and a tail part, and the two parts are made of different materials;

[0060] The head is the connection between the heat dissipation fin 72 and the heat dissipation wall 71. The material is made of two memory metals with different thermal expansion coefficients pressed together.

[0061] The tail portion is the portion where the heat dissipation fins 72 and the stepped surface of the heat dissipation wall 71 are bonded together, and the material is aluminum.

[0062] The two metal materials used for the head of the heat dissipation wing 72 are arranged up and down, and the thermal expansion coefficient of the metal material on the side close to the heat dissipation wall 71 is greater than that of the metal material on the other side.

[0063] When the temperature of the heat sink 6 is too high, the heat dissipation wings 72 absorb a large amount of heat, causing the metal material at the head to expand due to the heat. Since the metal expansion coefficient on one side is large and the expansion coefficient on the other side is small, the pulling forces on the two sides are different, causing the heat dissipation wings 72 to bend toward the side with the smaller expansion coefficient and in the opposite direction away from the heat dissipation wall 71. In this way, the heat dissipation wings 72 are evenly distributed between the heat dissipation fins 62, doubling the original heat dissipation area, greatly improving the heat dissipation effect, and preventing the device from overheating.

[0064] When the temperature drops, the metal material at the head of the heat dissipation wing 72 returns to its original shape, and the heat dissipation wing 72 is again attached to the heat dissipation wall 71, so that part of the heat dissipation area is folded and hidden, preventing the entire heat dissipation area from being exposed to the air for a long time and being contaminated with a lot of dust, which affects the heat dissipation efficiency.

[0065] Further:

[0066] The length of the slot 73 is greater than the sum of the widths of the baffle 74 and the clamping plate 77. The width of the connecting rod 75 is less than the distance between the two baffles 74. The outer surfaces of the baffles 74 are designed to be inclined toward one end. The baffles 74 are connected to the inner wall of the slot 73 on the side away from the heat sink 6.

[0067] The sum of the lengths of the compression spring 78 and the clamping plate 77 is greater than the distance between the two baffles 74 .

[0068] Initially, the heat dissipation fins 72 are restricted by the baffle 74 and the clamping plate 77 and cannot bend. As the heat dissipation fins 72 absorb heat, a bending force is generated at their heads, causing the heat dissipation fins 72 to deform and bend. The connecting rod 75 drives the clamping plate 77 to slide within the slot 73. When the clamping plate 77 moves out of the range restricted by the baffle 74, the heat dissipation fins 72 bend, and the connecting rod 75 is pulled out of the slot 73.

[0069] When resetting, the heat dissipation wing 72 presses the connecting rod 75 and the card plate 77 toward the card slot 73. The card plate 77 is guided by the top inclined surface of the baffle 74 and is received in the receiving groove 76. After entering the card slot 73, the compression spring 78 pushes the card plate 77 out and locks the heat dissipation wing 72 again.

[0070] This prevents the heat dissipation wings 72 from unfolding and being contaminated with excessive dust within a controllable temperature range, while reducing the number and amplitude of deformation of the heat dissipation wings 72 and extending the service life.

[0071] Example 2

[0072] See also Figure 1 and Figure 7-11 An outdoor underground substation that can prevent overheating damage includes a ground box 1, the top of the ground box 1 is fixedly connected to a signboard 2, a heat dissipation cavity 3 is defined on the front of the signboard 2, a heat dissipation channel 4 is defined inside the heat dissipation cavity 3 and extends to the back of the signboard 2, a heat dissipation baffle 5 is clamped on the front of the heat dissipation cavity 3, and a heat sink 6 is fixedly installed in the heat dissipation channel 4;

[0073] An auxiliary mechanism 7 for accelerating heat dissipation of the substation is provided in the heat sink 6;

[0074] A cooling device 8 and a ventilation mechanism 9 are fixedly installed in the heat dissipation cavity 3 to prevent the substation from being damaged by overheating.

[0075] The heat sink 6 includes a heat sink main frame 61 and heat sink fins 62. The heat sink 6 is oil-cooled. Flow pipes are provided in the heat sink main frame 61 and the heat sink fins 62, and the pipes are filled with cooling oil. The heat sink 6 extends into the floor box 1.

[0076] Further:

[0077] The cooling device 8 includes a water tank 81 fixedly connected to the back of the signboard 2;

[0078] The cooling device 8 further includes a spray head 82 fixedly connected to the inner wall of the heat dissipation cavity 3;

[0079] The water tank 81 and the shower head 82 are the same, and a temperature controller is provided in the shower head 82 .

[0080] The water cooling further accelerates the heat dissipation of the heat sink 6 and improves the efficiency.

[0081] Further:

[0082] The ventilation mechanism 9 includes a mounting plate 91 fixedly connected to the interface between the heat dissipation cavity 3 and the heat dissipation channel 4. A mounting opening 92 is defined above the mounting plate 91. An adjustment plate 93 is fixed inside the mounting opening 92. An adjustment opening 94 is defined on the surface of the adjustment plate 93. A rotating plate 95 is rotatably connected to the top of the adjustment plate 93.

[0083] The ventilation mechanism 9 further includes an extension tube 96 fixedly connected to the back of the heat sink 6 , and the top of the extension tube 96 is movably connected to a control rod 97 that passes through the adjustment plate 93 and the rotating plate 95 .

[0084] The shape and size of the rotating plate 95 correspond to the adjustment port 94. A through hole is provided at the center of the rotating plate 95 and the adjustment plate 93, and a thread is provided in the through hole of the rotating plate 95.

[0085] The extension tube 96 is located at the highest point of the heat sink 6 , and the extension tube 96 is communicated with the heat sink 6 . A slider corresponding to the thread is provided on the outer side of the control rod 97 , and a negative pressure fan is provided in the heat dissipation channel 4 .

[0086] Initially, the development area of ​​the adjustment port 94 is the same as the development area of ​​the heat dissipation partition 5 .

[0087] When the auxiliary mechanism 7 cannot be adjusted and the temperature continues to rise, the spray head 82 sprays coolant onto the heat sink 6. At the same time, since the oil temperature in the heat sink 6 is too high, the volume expands and overflows into the extension pipe 96, thereby pushing the control rod 97 to move upward. The control rod 97 pushes the rotating plate 95 to rotate, so that the development area of ​​the adjustment port 94 becomes larger. In this way, the air outlet speed is greater than the air inlet speed, which accelerates the heat dissipation. At the same time, the pressure in the heat dissipation chamber 3 becomes lower, which reduces the boiling point of the coolant, increases the evaporation efficiency, and takes away too much heat, further protecting the working safety of the substation.

[0088] Example 3

[0089] See also Figure 1-11 An outdoor underground substation that can prevent overheating damage includes a ground box 1, the top of the ground box 1 is fixedly connected to a signboard 2, a heat dissipation cavity 3 is defined on the front of the signboard 2, a heat dissipation channel 4 is defined inside the heat dissipation cavity 3 and extends to the back of the signboard 2, a heat dissipation baffle 5 is clamped on the front of the heat dissipation cavity 3, and a heat sink 6 is fixedly installed in the heat dissipation channel 4;

[0090] An auxiliary mechanism 7 for accelerating heat dissipation of the substation is provided in the heat sink 6;

[0091] A cooling device 8 and a ventilation mechanism 9 are fixedly installed in the heat dissipation cavity 3 to prevent the substation from being damaged by overheating.

[0092] The heat sink 6 includes a heat sink main frame 61 and heat sink fins 62. The heat sink 6 is oil-cooled. Flow pipes are provided in the heat sink main frame 61 and the heat sink fins 62, and the pipes are filled with cooling oil. The heat sink 6 extends into the floor box 1.

[0093] The auxiliary mechanism 7 includes a heat dissipation wall 71 fixedly connected to the side of the heat dissipation segment 62, the surface of the heat dissipation wall 71 is clamped with the heat dissipation wing 72, a card slot 73 is provided on the surface of the heat dissipation wall 71, and two symmetrical baffles 74 are fixedly connected at the opening of the card slot 73. The side of the heat dissipation wing 72 is fixedly connected to a connecting rod 75 extending into the card slot 73. The front and rear ends of the connecting rod 75 are provided with a storage groove 76. The interior of the storage groove 76 is plugged with a card plate 77, and a compression spring 78 is fixedly connected between the card plate 77 and the inner wall of the storage groove 76.

[0094] The heat dissipation wall 71 is arranged in a stepped shape, and each step has a heat dissipation wing 72, which is attached to the stepped surface of the heat dissipation wall 71;

[0095] The length of the heat dissipation fin 72 is greater than the length of the stepped surface of a single heat dissipation wall 71 , the length of the heat dissipation fin 72 is greater than the spacing between the heat dissipation fins 62 , and the deflection angle of the heat dissipation fin 72 does not exceed forty-five degrees.

[0096] The heat dissipation wing 72 is divided into two parts, a head part and a tail part, and the two parts are made of different materials;

[0097] The head is the connection between the heat dissipation fin 72 and the heat dissipation wall 71. The material is made of two memory metals with different thermal expansion coefficients pressed together.

[0098] The tail portion is the portion where the heat dissipation fins 72 and the stepped surface of the heat dissipation wall 71 are bonded together, and the material is aluminum.

[0099] The two metal materials used for the head of the heat dissipation wing 72 are arranged up and down, and the thermal expansion coefficient of the metal material on the side close to the heat dissipation wall 71 is greater than that of the metal material on the other side.

[0100] The length of the slot 73 is greater than the sum of the widths of the baffle 74 and the clamping plate 77. The width of the connecting rod 75 is less than the distance between the two baffles 74. The outer surfaces of the baffles 74 are designed to be inclined toward one end. The baffles 74 are connected to the inner wall of the slot 73 on the side away from the heat sink 6.

[0101] The sum of the lengths of the compression spring 78 and the clamping plate 77 is greater than the distance between the two baffles 74 .

[0102] The cooling device 8 includes a water tank 81 fixedly connected to the back of the signboard 2;

[0103] The cooling device 8 further includes a spray head 82 fixedly connected to the inner wall of the heat dissipation cavity 3;

[0104] The water tank 81 and the shower head 82 are the same, and a temperature controller is provided in the shower head 82 .

[0105] The ventilation mechanism 9 includes a mounting plate 91 fixedly connected to the interface between the heat dissipation cavity 3 and the heat dissipation channel 4. A mounting opening 92 is defined above the mounting plate 91. An adjustment plate 93 is fixed inside the mounting opening 92. An adjustment opening 94 is defined on the surface of the adjustment plate 93. A rotating plate 95 is rotatably connected to the top of the adjustment plate 93.

[0106] The ventilation mechanism 9 further includes an extension tube 96 fixedly connected to the back of the heat sink 6 , and the top of the extension tube 96 is movably connected to a control rod 97 that passes through the adjustment plate 93 and the rotating plate 95 .

[0107] The shape and size of the rotating plate 95 correspond to the adjustment port 94. A through hole is provided at the center of the rotating plate 95 and the adjustment plate 93, and a thread is provided in the through hole of the rotating plate 95.

[0108] The extension tube 96 is located at the highest point of the heat sink 6 , and the extension tube 96 is communicated with the heat sink 6 . A slider corresponding to the thread is provided on the outer side of the control rod 97 , and a negative pressure fan is provided in the heat dissipation channel 4 .

[0109] Initially, the development area of ​​the adjustment port 94 is the same as the development area of ​​the heat dissipation partition 5 .

[0110] 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. An outdoor underground substation capable of preventing damage from overheating, comprising a ground box (1), the top of the ground box (1) being fixedly connected to a signboard (2), a heat dissipation cavity (3) being provided on the front of the signboard (2), a heat dissipation channel (4) being provided inside the heat dissipation cavity (3) and extending to the back of the signboard (2), a heat dissipation baffle (5) being clamped on the front of the heat dissipation cavity (3), and a heat sink (6) being fixedly installed in the heat dissipation channel (4); characterized in that: An auxiliary mechanism (7) for accelerating heat dissipation of the substation is provided in the heat sink (6); A cooling device (8) and a ventilation mechanism (9) are fixedly installed in the heat dissipation cavity (3) to prevent the substation from being damaged by overheating; The auxiliary mechanism (7) includes a heat dissipation wall (71) fixedly connected to the side of the heat dissipation fin (62), the surface of the heat dissipation wall (71) is clamped with the heat dissipation wing (72), the surface of the heat dissipation wall (71) is provided with a clamping groove (73), the opening of the clamping groove (73) is fixedly connected to two symmetrical baffles (74), the side of the heat dissipation wing (72) is fixedly connected to a connecting rod (75) extending into the clamping groove (73), the front and rear ends of the connecting rod (75) are provided with a receiving groove (76), the interior of the receiving groove (76) is plugged with a clamping plate (77), and a compression spring (78) is fixedly connected between the clamping plate (77) and the inner wall of the receiving groove (76); The heat dissipation wall (71) is arranged in a stepped shape, and each step is provided with a heat dissipation wing (72), and the heat dissipation wing (72) is attached to the stepped surface of the heat dissipation wall (71); The length of the heat dissipation fin (72) is greater than the length of the stepped surface of a single heat dissipation wall (71), and the length of the heat dissipation fin (72) is greater than the spacing between the heat dissipation fins (62); The heat dissipation wing (72) is divided into two parts: a head part and a tail part, and the two parts are made of different materials; The head is the connection between the heat dissipation wing (72) and the heat dissipation wall (71), and the material is made of two memory metals with different thermal expansion coefficients pressed together. The tail portion is a portion where the heat dissipation wing (72) and the stepped surface of the heat dissipation wall (71) are bonded together, and the material is aluminum.

2. The outdoor underground substation capable of preventing overheating damage according to claim 1, characterized in that: The two metal materials used for the head of the heat dissipation wing (72) are arranged vertically, and the thermal expansion coefficient of the metal material on the side close to the heat dissipation wall (71) is greater than that of the metal material on the other side.

3. The outdoor underground substation capable of preventing overheating damage according to claim 1, characterized in that: The length of the card slot (73) is greater than the sum of the widths of the baffle (74) and the card plate (77); the width of the connecting rod (75) is less than the distance between the two baffles (74); the outer surface of the baffle (74) is designed to be inclined toward one end; the baffle (74) is connected to the inner wall of the card slot (73) away from the heat sink (6); The sum of the lengths of the compression spring (78) and the clamping plate (77) is greater than the distance between the two baffles (74).

4. The outdoor underground substation capable of preventing overheating damage according to claim 1, characterized in that: The cooling device (8) comprises a water tank (81) fixedly connected to the back of the signboard (2); The cooling device (8) further includes a spray head (82) fixedly connected to the inner wall of the heat dissipation cavity (3); The water tank (81) and the spray head (82) are identical, and a temperature controller is provided in the spray head (82).

5. The outdoor underground substation capable of preventing overheating damage according to claim 1, characterized in that: The ventilation mechanism (9) comprises a mounting plate (91) fixedly connected to the interface between the heat dissipation cavity (3) and the heat dissipation channel (4); a mounting opening (92) is provided above the mounting plate (91); an adjusting plate (93) is fixed inside the mounting opening (92); an adjusting opening (94) is provided on the surface of the adjusting plate (93); and a rotating plate (95) is rotatably connected above the adjusting plate (93); The ventilation mechanism (9) further comprises an extension tube (96) fixedly connected to the back of the heat sink (6), and the top of the extension tube (96) is movably connected to a control rod (97) that passes through the adjustment plate (93) and the rotating plate (95).

6. The outdoor underground substation capable of preventing overheating damage according to claim 5, characterized in that: The shape and size of the rotating plate (95) correspond to the adjustment port (94). A through hole is provided at the center of the rotating plate (95) and the adjustment plate (93), and a thread is provided in the through hole of the rotating plate (95).

7. The outdoor underground substation capable of preventing overheating damage according to claim 6, characterized in that: The extension tube (96) is located at the highest point of the heat sink (6), and the extension tube (96) is communicated with the heat sink (6). A slider corresponding to the thread is provided on the outside of the control rod (97), and a negative pressure fan is provided in the heat dissipation channel (4).

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