Overload protection transformer for solar power generation

Abstract

The utility model discloses an overload protection transformer for solar power generation, and relates to the technical field of transformers. The overload protection transformer for solar power generation comprises a transformer box, a transformer body is arranged in the transformer box, a water tank is fixedly connected to the front end of the transformer box, cooling fins penetrate through and are fixedly connected to the front end of the water tank, two cooling openings are formed in the top of the transformer box, and a supporting plate is fixedly connected to the interior of the transformer box; a main cooling fan and an auxiliary cooling fan are arranged at the top of the supporting plate, an overload automatic starting mechanism is arranged in the transformer box, and by arranging the overload automatic starting mechanism, when heat generated by normal operation of the transformer body is small at the beginning, the main cooling fan operates to dissipate heat, the auxiliary cooling fan is not started, and the heat dissipation effect of the transformer body is improved. And when the transformer body is overloaded and generates a large amount of heat, the auxiliary heat dissipation fan can be automatically started to enhance heat dissipation of the transformer body.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an overload protection transformer for solar power generation. Background Art

[0002] A power transformer is a static electrical device that is used to convert an AC voltage (current) of a certain value into another or several different voltages (currents) of the same frequency. It achieves electrical energy transmission based on the principle of electromagnetic induction. Solar generators are often used with transformers to effectively prevent overload.

[0003] The utility model with publication number CN218214930U discloses an overheat protection type electronic power transformer, including a shell, a transformer body is arranged inside the shell, a first supporting structure is arranged on one side of the transformer body, and a second supporting structure is arranged on the other side of the transformer body. In the above application document, two cooling fans cooperate with circulating cold water to contact the transformer body to dissipate heat for the transformer body. When the power of the transformer body is low and does not generate too much heat, the power consumption is high, which is not conducive to environmental protection. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides an overload protection transformer for solar power generation, which solves the problems raised in the above background technology. To achieve the above purpose, the utility model is implemented by the following technical solutions: an overload protection transformer for solar power generation, including a transformer box, a transformer body is arranged inside the transformer box, a water tank is fixedly connected to the front end of the transformer box, a heat sink is penetrated and fixedly connected to the front end of the water tank, two heat dissipation ports are arranged on the top of the transformer box, a support plate is fixedly connected to the inside of the transformer box, a main heat dissipation fan and an auxiliary heat dissipation fan are arranged on the top of the support plate, an overload automatic opening mechanism is arranged inside the transformer box, a water cooling heat exchange mechanism is arranged on the top of the transformer box, and a heat dissipation acceleration mechanism is arranged on the side of the transformer box, the overload automatic opening mechanism includes a controller and a guide cylinder, the controller is penetrated and fixed, the controller is electrically connected to the auxiliary heat dissipation fan through a wire, the bottom of the controller is electrically connected to a contact switch, the guide cylinder is fixedly connected to the inside of the transformer box through a connecting block, a thermal expansion airbag is arranged inside the guide cylinder, a slide rod is fixedly connected to the top of the guide cylinder, and a push plate is slidably connected to the slide rod.

[0005] Preferably, the guide cylinder is located near the top of the transformer box, and the push plate is located directly below the contact switch. The guide cylinder is located near the top of the transformer box to better sense temperature changes. When the thermal expansion airbag expands, it will lift the push plate and move it upward to contact the contact switch.

[0006] Preferably, the water-cooled heat exchange mechanism includes a pressurized chamber and a vertical rod, the pressurized chamber is fixedly connected to the top of the transformer box, the internal piston of the pressurized chamber is slidably connected to the pressurized rod, the end of the pressurized rod away from the pressurized chamber is fixedly connected to a pressure plate, the surface of the pressurized rod is sleeved with a return spring, the side of the pressure plate is fixedly connected to a gear rod, one side of the pressurized chamber is penetrated by and fixedly connected with a water suction pipe, the other end of the pressurized chamber is penetrated by and fixedly connected with a heat exchange pipe, the water suction pipe and the end of the heat exchange pipe away from the pressurized chamber are both penetrated by and fixedly connected to the water tank, the water suction pipe and the heat exchange pipe are both provided with a one-way valve, the vertical rod is fixedly connected to the rotating shaft of the auxiliary cooling fan, and a gear is fixedly connected to the vertical rod.

[0007] Preferably, the gear has only half of the teeth, and the teeth on the gear are meshed with the teeth on the gear rod. At the beginning, the rotation of the gear drives the gear rod to move, and the movement of the gear rod drives the pressure plate and the pressure rod to move into the pressure chamber, and the reset spring is tightened. When the gear rotates to the part without teeth, the reset spring rebounds and drives the pressure rod to move out of the pressure chamber to restore.

[0008] Preferably, the heat dissipation acceleration mechanism comprises a bevel gear A, a fixed plate, and a bracket, wherein the bevel gear A is fixedly connected to the top of the vertical rod, the fixed plate is fixedly connected to the top of the transformer box, a rotating rod is rotatably connected to the fixed plate, and a bevel gear B is fixedly connected to the end of the rotating rod away from the fixed plate, the bracket is fixedly connected to the side of the transformer box, a cross bar is rotatably connected to the bracket, the cross bar is connected to the rotating rod through a transmission belt, and a fan is fixedly connected to the end of the cross bar away from the bracket. +Expand

[0009] Preferably, the bevel gear A is vertically meshed with the bevel gear B, the fan is close to the heat sink, the rotation of the bevel gear A drives the bevel gear B to rotate, and when the fan rotates, airflow is generated and blows toward the heat sink.

[0010] The utility model provides a transformer for solar power generation with overload protection, which has the following beneficial effects:

[0011] (1) The present application is provided with an automatic overload start mechanism, so that when the heat generated by the normal operation of the transformer body is relatively small at the beginning, the main cooling fan runs to dissipate heat, and the auxiliary cooling fan does not start, which can reduce the use of electric energy. When the transformer body is overloaded and generates a large amount of heat, the auxiliary cooling fan will automatically start to enhance the heat dissipation of the transformer body.

[0012] (2) The present application is provided with a water-cooled heat exchange mechanism, thereby achieving a state in which cold water is initially stored in the water tank and dissipated through the heat sink to maintain a low temperature. When the auxiliary cooling fan is started, the air pressure chamber will absorb the cold water in the water tank through the water suction pipe and then spray it back into the water tank from the heat exchange pipe to form a circulation. When the cold water passes through the heat exchange pipe, it will take away the heat in the transformer box and return to the water tank to be dissipated by the heat sink to complete the heat exchange.

[0013] (3) The present application is provided with a heat dissipation acceleration mechanism, so that when the auxiliary cooling fan is started, the cross bar will be driven to rotate, and the rotation of the cross bar drives the fan to rotate. The rotation of the fan generates airflow blowing toward the heat sink, accelerating the air flow near the heat sink and improving the heat dissipation effect of the heat sink on the water in the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the overload automatic opening mechanism of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the water-cooled heat exchange mechanism of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the utility model's accelerated heat dissipation mechanism.

[0019] In the figure: 1. transformer box; 2. transformer body; 3. water tank; 4. heat sink; 5. heat dissipation port; 6. support plate; 7. main cooling fan; 8. auxiliary cooling fan; 9. overload automatic opening mechanism; 91. controller; 92. wire; 93. contact switch; 94. guide cylinder; 95. connecting block; 96. thermal expansion airbag; 97. slide bar; 98. push plate; 10. water cooling heat exchange mechanism; 101. pressurizing chamber; 102. pressurizing rod; 103. pressure plate; 104. gear rod; 105. water suction pipe; 106. heat exchange pipe; 107. vertical rod; 108. gear; 11. accelerating heat dissipation mechanism; 111. bevel gear A; 112. fixing plate; 113. rotating rod; 114. bevel gear B; 115. bracket; 116. cross bar; 117. fan. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Embodiment 1

[0022] See also Figure 1-3 A transformer for solar power generation with overload protection includes a transformer box 1, a transformer body 2 is arranged inside the transformer box 1, a water tank 3 is fixedly connected to the front end of the transformer box 1, a heat sink 4 is penetrated and fixedly connected to the front end of the water tank 3, two heat dissipation ports 5 are arranged on the top of the transformer box 1, a support plate 6 is fixedly connected to the inside of the transformer box 1, a main heat dissipation fan 7 and an auxiliary heat dissipation fan 8 are arranged on the top of the support plate 6, an overload automatic opening mechanism 9 is arranged inside the transformer box 1, a water-cooled heat exchange mechanism 10 is arranged on the top of the transformer box 1, and a heat dissipation acceleration mechanism 11 is arranged on the side of the transformer box 1. The overload automatic opening mechanism 9 includes a controller 91 and a guide cylinder 94, and the controller 91 and the guide cylinder 94 are connected. The controller 91 is electrically connected to the auxiliary cooling fan 8 through a wire 92, and a contact switch 93 is electrically connected to the bottom of the controller 91. A guide cylinder 94 is fixedly connected to the inside of the transformer box 1 through a connecting block 95. A thermal expansion airbag 96 is arranged inside the guide cylinder 94. A slide bar 97 is fixedly connected to the top of the guide cylinder 94, and a push plate 98 is slidably connected to the slide bar 97. The guide cylinder 94 is located near the top of the transformer box 1, and the push plate 98 is located directly below the contact switch 93. The guide cylinder 94 is located near the top of the transformer box 1 to better sense temperature changes. When the thermal expansion airbag 96 expands, it will push up the push plate 98 and move it upward to contact the contact switch 93.

[0023] During use, at the beginning, when the heat generated by the normal operation of the transformer body 2 is small, the main cooling fan 7 runs for heat dissipation, and the auxiliary cooling fan 8 is not started, which can reduce the use of electric energy. When the transformer body 2 is overloaded and the heat generated becomes larger, the temperature inside the transformer box 1 rises, and the thermal expansion airbag 96 in the guide cylinder 94 located near the top of the transformer box 1 absorbs heat and gradually expands. The thermal expansion airbag 96 expands through the guide cylinder 94 and pushes up the push plate 98. The push plate 98 moves upward and contacts the contact switch 93. At this time, the controller 91 will turn on the auxiliary cooling fan 8 to enhance heat dissipation. When the transformer body 2 returns to normal, the thermal expansion airbag 96 shrinks, and the push plate 98 falls away from the contact switch 93 due to gravity, and the auxiliary cooling fan 8 is turned off again.

[0024] Embodiment 2

[0025] See also Figure 1-4On the basis of the first embodiment, the water-cooled heat exchange mechanism 10 includes a pressurizing chamber 101 and a vertical rod 107. The pressurizing chamber 101 is fixedly connected to the top of the transformer box 1. The internal piston of the pressurizing chamber 101 is slidably connected to a pressurizing rod 102. The end of the pressurizing rod 102 away from the pressurizing chamber 101 is fixedly connected to a pressure plate 103. A return spring is sleeved on the surface of the pressurizing rod 102. The side of the pressure plate 103 is fixedly connected to a gear rod 104. A water suction pipe 105 is passed through and fixedly connected to one side of the pressurizing chamber 101. A heat exchange pipe 106 is passed through and fixedly connected to the other end of the pressurizing chamber 101. The water suction pipe 105 and the heat exchange pipe 106 away from the pressurizing chamber 101 are fixedly connected. One end of each is penetrated by the water tank 3 and fixedly connected, a one-way valve is arranged on the water suction pipe 105 and the heat exchange pipe 106, a vertical rod 107 is fixedly connected to the rotating shaft of the auxiliary cooling fan 8, a gear 108 is fixedly connected to the vertical rod 107, and the gear 108 has only half of the teeth, and the teeth on the gear 108 are meshed with the teeth on the gear rod 104. At the beginning, the rotation of the gear 108 drives the gear rod 104 to move, and the movement of the gear rod 104 drives the pressure plate 103 and the pressure rod 102 to move into the pressure chamber 101, and the reset spring is tightened. When the gear 108 rotates to the part without teeth, the reset spring rebounds and drives the pressure rod 102 to move out of the pressure chamber 101 to restore.

[0026] When in use, on the basis of the first embodiment, when the auxiliary cooling fan 8 is started, its rotating shaft will drive the vertical rod 107 to rotate, and the rotation of the vertical rod 107 drives the gear 108 to rotate. At the beginning, the rotation of the gear 108 drives the gear rod 104 to move, and the movement of the gear rod 104 drives the pressure plate 103 and the pressure rod 102 to move into the pressure chamber 101, and the reset spring is tightened. When the gear 108 rotates to the toothless part, the reset spring rebounds and drives the pressure rod 102 to move out of the pressure chamber 101 to restore When the pressurizing rod 102 moves into the pressurizing chamber 101, it will pressurize the pressurizing chamber 101 so that the water in the pressurizing chamber 101 will be sprayed out into the water tank 3 through the heat exchange tube 106. When the pressurizing rod 102 moves out of the pressurizing chamber 101 again, negative pressure will be generated in the pressurizing chamber 101, and the water tank 3 will be sucked into the pressurizing chamber 101 through the suction pipe 105, thereby forming a cycle. When the cold water passes through the heat exchange tube 106, it will take away the heat in the transformer box 1, return to the water tank 3 and be dissipated by the heat sink 4 to complete the heat exchange.

[0027] Embodiment 3

[0028] See also Figure 1-5On the basis of the second embodiment, the heat dissipation mechanism 11 includes a bevel gear A111, a fixed plate 112, and a bracket 115. The bevel gear A111 is fixedly connected to the top of the vertical rod 107, the fixed plate 112 is fixedly connected to the top of the transformer box 1, the fixed plate 112 is rotatably connected to a rotating rod 113, and the end of the rotating rod 113 away from the fixed plate 112 is fixedly connected to a bevel gear B114, the bracket 115 is fixedly connected to the side of the transformer box 1, and the bracket 115 is rotatably connected to a cross bar 116, the cross bar 116 is transmission-connected to the rotating rod 113 through a transmission belt, and the end of the cross bar 116 away from the bracket 115 is fixedly connected to a fan 117, the bevel gear A111 is vertically meshed with the bevel gear B114, the fan 117 is close to the heat sink 4, the rotation of the bevel gear A111 drives the bevel gear B114 to rotate, and when the fan 117 rotates, a wind flow is generated to blow toward the heat sink 4.

[0029] When in use, on the basis of Example 2, the rotation of the vertical rod 107 will also drive the bevel gear A111 to rotate, the rotation of the bevel gear A111 will drive the bevel gear B114 to rotate, the rotation of the bevel gear B114 will drive the rotating rod 113 to rotate, the rotation of the rotating rod 113 drives the cross bar 116 to rotate through the transmission belt, the rotation of the cross bar 116 drives the fan 117 to rotate, and when the fan 117 rotates, it generates wind flow blowing towards the heat sink 4, thereby improving the air flow at the heat sink 4 and enhancing the heat dissipation effect of the heat sink 4.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A transformer for solar power generation with overload protection, comprising a transformer box (1), characterized in that: The transformer box (1) is provided with a transformer body (2) inside, a water tank (3) is fixedly connected to the front end of the transformer box (1), a heat sink (4) is passed through and fixedly connected to the front end of the water tank (3), two heat dissipation ports (5) are provided on the top of the transformer box (1), a support plate (6) is fixedly connected to the inside of the transformer box (1), a main heat dissipation fan (7) and an auxiliary heat dissipation fan (8) are provided on the top of the support plate (6), an overload automatic opening mechanism (9) is provided inside the transformer box (1), a water-cooled heat exchange mechanism (10) is provided on the top of the transformer box (1), and a heat dissipation acceleration mechanism (11) is provided on the side of the transformer box (1); The overload automatic opening mechanism (9) comprises a controller (91) and a guide cylinder (94); the controller (91) penetrates and is fixed; the controller (91) is electrically connected to the auxiliary cooling fan (8) via a wire (92); the bottom of the controller (91) is electrically connected to a contact switch (93); the guide cylinder (94) is fixedly connected to the inside of the transformer box (1) via a connecting block (95); a thermal expansion airbag (96) is arranged inside the guide cylinder (94); a sliding rod (97) is fixedly connected to the top of the guide cylinder (94); a push plate (98) is slidably connected to the sliding rod (97).

2. The overload protection solar power transformer according to claim 1, characterized in that: The guide cylinder (94) is located inside the transformer box (1) near the top, and the push plate (98) is located directly below the contact switch (93).

3. The overload protection solar power transformer according to claim 2, characterized in that: The water-cooled heat exchange mechanism (10) comprises a pressurizing chamber (101) and a vertical rod (107); the pressurizing chamber (101) is fixedly connected to the top of the transformer box (1); the internal piston of the pressurizing chamber (101) is slidably connected to a pressurizing rod (102); one end of the pressurizing rod (102) away from the pressurizing chamber (101) is fixedly connected to a pressure plate (103); a return spring is sleeved on the surface of the pressurizing rod (102); a side of the pressure plate (103) is fixedly connected to a gear rod (104); the pressurizing chamber (101 ) is penetrated and fixedly connected to one side of the pressurizing chamber (101), a water suction pipe (105) is penetrated and fixedly connected to the other end of the pressurizing chamber (101), a heat exchange pipe (106) is penetrated and fixedly connected to the other end of the pressurizing chamber (101), the ends of the water suction pipe (105) and the heat exchange pipe (106) away from the pressurizing chamber (101) are penetrated and fixedly connected to the water tank (3), and a one-way valve is provided on the water suction pipe (105) and the heat exchange pipe (106), the vertical rod (107) is fixedly connected to the rotating shaft of the auxiliary cooling fan (8), and a gear (108) is fixedly connected to the vertical rod (107).

4. The overload protection solar power transformer according to claim 3, characterized in that: The gear (108) has only half of the teeth, and the teeth on the gear (108) mesh with the teeth on the gear rod (104).

5. The overload protection solar power transformer according to claim 4, characterized in that: The accelerated heat dissipation mechanism (11) comprises a bevel gear A (111), a fixing plate (112), and a bracket (115); the bevel gear A (111) is fixedly connected to the top of the vertical rod (107); the fixing plate (112) is fixedly connected to the top of the transformer box (1); a rotating rod (113) is rotatably connected to the fixing plate (112); an end of the rotating rod (113) away from the fixing plate (112) is fixedly connected to a bevel gear B (114); the bracket (115) is fixedly connected to the side of the transformer box (1); a cross bar (116) is rotatably connected to the bracket (115); the cross bar (116) is transmission-connected to the rotating rod (113) via a transmission belt; and an end of the cross bar (116) away from the bracket (115) is fixedly connected to a fan (117).

6. The overload protection solar power transformer according to claim 5, characterized in that: The bevel gear A (111) is vertically meshed with the bevel gear B (114), and the fan (117) is close to the heat sink (4).

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