Indoor damp-proof heat dissipation type dry-type transformer iron core

Abstract

The utility model belongs to the technical field of transformers, and particularly relates to an indoor damp-proof heat dissipation type dry-type transformer iron core which comprises an iron core body, the iron core body comprises an upper iron yoke, a lower iron yoke and a core column, the upper iron yoke and the lower iron yoke are fixed with a clamping piece in a matched mode, and a coil is sleeved outside the core column. The clamping pieces comprise the upper clamping piece and the lower clamping piece, the upper clamping piece is arranged on the two sides of the upper iron yoke, the lower clamping piece is arranged on the two sides of the lower iron yoke, the heat dissipation moisture-proof assembly comprises a draught fan, an air conveying pipe, a semiconductor refrigeration box, an air inlet pipe and an air outlet hole, the upper clamping piece is fixedly connected with two installation plates, and the draught fan and the semiconductor refrigeration box are fixedly installed on the two installation plates respectively. The fan and the semiconductor refrigeration box are in sealed connection through an air conveying pipe, the semiconductor refrigeration box is in sealed connection with an air inlet pipe, and the air inlet pipe is inserted between the core column and the coil; the air outlet holes are formed in the lower clamping piece, the air outlet holes are formed in the corresponding positions between the core column of the lower clamping piece and the coil, and air circulation between the core column of the iron core and the coil can be accelerated by forming the air outlet holes in the clamping piece.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, and in particular relates to an indoor moisture-proof and heat-dissipating dry-type transformer iron core. Background Art

[0002] A dry-type transformer refers to a transformer whose core and winding are not immersed in insulating oil. Transformers used indoors are generally open dry-type transformers without a casing. This structure is easier to dissipate heat than a transformer with a casing, but correspondingly, the air is not easy to circulate in the part of the coil surrounding the core column, and in rainy or humid weather, the part surrounded by the coil is in a humid and hot state, the core and coil are easily corroded and damaged, and heat and water vapor are difficult to discharge.

[0003] Therefore, a moisture-proof and heat-dissipating dry-type transformer core for indoor use is needed. Utility Model Content

[0004] In view of the problem in the prior art that heat and humid water vapor are difficult to discharge in the iron core coil of indoor dry-type transformers, the utility model provides an indoor moisture-proof and heat-dissipating dry-type transformer iron core, which can accelerate the air circulation between the iron core column and the coil by opening air outlet holes on the clamps.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] Indoor moisture-proof heat dissipation dry-type transformer core, characterized by:

[0007] The iron core comprises an upper iron yoke, a lower iron yoke and a core column, wherein the upper iron yoke and the lower iron yoke are fixed with a clamp, and a coil is sheathed on the core column;

[0008] The clamping piece comprises an upper clamping piece and a lower clamping piece, wherein the upper clamping piece is arranged on both sides of the upper iron yoke, and the two upper clamping pieces are fixedly connected by screws to clamp the upper iron yoke, and the lower clamping piece is arranged on both sides of the lower iron yoke, and the two lower clamping pieces are fixedly connected by screws to fix and clamp the lower iron yoke;

[0009] The heat dissipation and moisture-proof component includes a fan, an air supply pipe, a semiconductor refrigeration box, an air inlet pipe and an air outlet hole. Two mounting plates are fixedly connected to the upper clamp, and the fan and the semiconductor refrigeration box are fixedly mounted on the two mounting plates respectively. The fan and the semiconductor refrigeration box are sealedly connected through the air supply pipe. The semiconductor refrigeration box is sealedly connected with the air inlet pipe, and the air inlet pipe is inserted between the core column and the coil; the lower clamp is provided with an air outlet hole, and the air outlet hole is set at a corresponding position between the core column of the lower clamp and the coil.

[0010] The fan blows outside air into the air duct, and the air enters the semiconductor refrigeration box through the air duct for cooling. The cooled air is transported to the position between the core column and the coil through the air inlet pipe. The air is not easy to circulate at this position and the temperature is concentrated and difficult to dissipate heat. The air inlet pipe continuously blows cold air into this position. After absorbing heat, the cold air is discharged from the air outlet of the lower clamp, which can not only reduce the temperature of the core column, but also take away the water vapor accumulated due to humid weather, playing a role in cooling and moisture-proofing.

[0011] Preferably, a support bar is provided between the core column and the coil, and a limiting hole is provided on the support bar, and the limiting hole is mounted on and fixed to the air inlet pipe.

[0012] The limiting hole can fix the air inlet duct, keeping the air inlet duct stable and not prone to shaking and falling off.

[0013] Preferably, the semiconductor refrigeration box is a sealed structure, including a box body and a semiconductor refrigeration plate, the semiconductor refrigeration plate includes a cold end and a hot end, the cold end is arranged in the box body, and the hot end passes through the box body to contact with the outside air for heat dissipation.

[0014] Preferably, the air outlet hole is connected to an air outlet pipe, the top end of the air outlet pipe is inserted between the coil and the core column, and the tail end is a trumpet shape with a gradually increasing diameter.

[0015] The top of the air outlet pipe directly extends into the space between the coil and the core column, which is convenient for hot air to flow out. The end of the air outlet pipe adopts a trumpet-shaped structure to facilitate air discharge.

[0016] Preferably, the end of the air inlet pipe is connected to a nozzle, and the nozzle has two exhaust ports.

[0017] Two exhaust ports allow the cool air to spread more evenly.

[0018] Preferably, the two exhaust ports of the air jet head are inclined downward, and the included angle between the two exhaust ports is 90°-120°.

[0019] The two exhaust ports can blow toward both sides of the core column to further evenly diffuse the cold air.

[0020] Preferably, rubber shock-absorbing plates are provided between the mounting plate and the fan, and between the mounting plate and the semiconductor refrigeration box.

[0021] The rubber damping plate can reduce the vibration of the fan transmitted to the upper clamp, and can also reduce the vibration of the iron core transmitted to the fan and the semiconductor refrigeration box.

[0022] Preferably, a filter screen is fixed at the air inlet of the fan.

[0023] The filter can isolate external debris and prevent indoor lint from being sucked into the fan.

[0024] The beneficial effects of the utility model are as follows: compared with the traditional dry-type transformer core, the coil of the existing core has support blocks, support bars, etc. and is blocked by clamps, so it is not convenient to exhaust air even if air is introduced. The present invention increases the exhaust path by opening air outlet holes on the lower clamps, and conveys the outside air to between the core column and the coil through the fan, and arranges a semiconductor refrigeration box on the conveying path to cool the air, so that the temperature of the air blown into the core column is lower, making it easier to cool the core column; accelerating the air circulation can take away the water vapor between the core column and the coil to keep it dry; the use of semiconductor refrigeration technology has low noise, is easy to control, occupies a small space, and can be installed on the edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the iron core of the indoor moisture-proof and heat-dissipating dry-type transformer in the embodiment;

[0026] Figure 2 It is a schematic diagram of the explosion structure of the iron core of the indoor moisture-proof and heat-dissipating dry-type transformer in the embodiment;

[0027] Figure 3 It is a structural schematic diagram of the heat dissipation and moisture-proof assembly of the indoor moisture-proof and heat-dissipating dry-type transformer core in the embodiment;

[0028] Figure 4 It is a schematic diagram of the exploded structure of the heat dissipation and moisture-proof component of the indoor moisture-proof and heat-dissipating dry-type transformer core in the embodiment;

[0029] Figure 5 It is a schematic diagram of the explosion structure of the semiconductor refrigeration box of the indoor moisture-proof heat dissipation dry-type transformer core in the embodiment;

[0030] Figure 6 It is a schematic diagram of the enlarged structure of the air outlet holes and the air outlet pipe of the iron core of the indoor moisture-proof and heat-dissipating dry-type transformer in the embodiment;

[0031] In the figure: 1. iron core; 101. upper iron yoke; 102. lower iron yoke; 103. core column; 104. stay; 105. limit hole; 2. clamp; 201. upper clamp; 202. lower clamp; 3. heat dissipation and moisture-proof assembly; 301. fan; 302. air duct; 303. semiconductor refrigeration box; 304. air inlet duct; 305. air outlet; 306. air outlet duct; 4. mounting plate; 501. box body; 502. semiconductor refrigeration sheet; 503. cold end; 504. hot end; 6. nozzle; 601. exhaust port; 7. rubber shock-absorbing plate; 8. filter. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0033] Specific implementation examples Figure 1 , 2 , 3, 4, 5 and 6, the indoor moisture-proof heat dissipation dry-type transformer core is characterized by: comprising

[0034] The iron core 1 comprises an upper iron yoke 101, a lower iron yoke 102 and a core column 103. The upper iron yoke 101 and the lower iron yoke 102 are fixed with a clamp, and the core column 103 is sheathed with a coil;

[0035] The clamping piece includes an upper clamping piece 201 and a lower clamping piece 202. The upper clamping piece 201 is arranged on both sides of the upper iron yoke 101, and the two upper clamping pieces 201 are fixedly connected by screws to clamp the upper iron yoke 101. The lower clamping piece 202 is arranged on both sides of the lower iron yoke 102, and the two lower clamping pieces 202 are fixedly connected by screws to fix and clamp the lower iron yoke 102.

[0036] The heat dissipation and moisture-proof component 3 includes a fan 301, an air supply pipe 302, a semiconductor refrigeration box 303, an air inlet pipe 304 and an air outlet hole 305. Two mounting plates 4 are fixedly connected to the upper clamp 201, and the fan 301 and the semiconductor refrigeration box 303 are fixedly mounted on the two mounting plates 4 respectively. The fan 301 and the semiconductor refrigeration box 303 are sealedly connected through the air supply pipe 302. The semiconductor refrigeration box 303 is sealedly connected with the air inlet pipe 304, and the air inlet pipe 304 is inserted between the core column 103 and the coil; the lower clamp 202 is provided with an air outlet hole 305, and the air outlet hole 305 is set at a corresponding position between the core column 103 of the lower clamp 202 and the coil.

[0037] like Figure 1 , 2 As shown in , 3 and 4 , a support bar is provided between the core column 103 and the coil, and a limiting hole 105 is provided on the support bar, and the limiting hole 105 is mounted and fixed on the air inlet pipe 304 .

[0038] like Figure 5 As shown, the semiconductor refrigeration box 303 is a sealed structure, including a box body 501 and a semiconductor refrigeration plate 502. The semiconductor refrigeration plate 502 includes a cold end 503 and a hot end 504. The cold end 503 is arranged in the box body 501, and the hot end 504 passes through the box body 501 to contact the outside air for heat dissipation.

[0039] like Figure 1, 2 As shown in FIG6 , the air outlet hole 305 is connected to an air outlet pipe 306 , and the tail end of the air outlet pipe 306 is a trumpet shape with a gradually increasing diameter.

[0040] like Figure 2 , 3 As shown in FIG. 4 , the end of the air inlet pipe 304 is connected to a nozzle 6 , and the nozzle 6 has two exhaust ports 601 .

[0041] like Figure 2 , 3 As shown in FIG. 4 , the two exhaust ports 601 of the air jet head 6 are both tilted downward, and the included angle between the two exhaust ports 601 is 90°-120°.

[0042] like Figure 1 and 2 As shown, rubber damping plates 7 are provided between the mounting plate 4 and the fan 301 , and between the mounting plate 4 and the semiconductor refrigeration box 303 .

[0043] A filter screen 8 is also fixed at the air inlet of the fan 301 .

[0044] Working principle: When the dry-type transformer core is working, the fan 301 is driven by the motor to continuously inhale external air and blow the external air into the air duct 302. The air enters the semiconductor refrigeration box 303 through the air duct 302. The semiconductor refrigeration plate 502 is energized to cool down the cold end 503 and heat up the hot end 504. The cold air contacts the cold end 503 of the semiconductor refrigeration plate 502 to cool down. The cooled air is transported to between the core column 103 and the coil through the air inlet pipe 304. The air inlet pipe 304 continuously blows cold air into this place. After absorbing heat, the cold air is discharged from the air outlet 305 or the air outlet pipe 306 of the lower clamp 202. The air outlet 305 or the air outlet pipe 306 can increase the exhaust path, speed up the discharge of hot air, continuously absorb the heat of the core column, and take away the humid water vapor accumulated on the core column 103 due to weather or other reasons, so as to keep the core column 103 and the coil in a low temperature and dry state.

[0045] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. Indoor moisture-proof heat dissipation dry-type transformer core, characterized by: include An iron core (1), the iron core (1) comprising an upper iron yoke (101), a lower iron yoke (102) and a core column (103), the upper iron yoke (101) and the lower iron yoke (102) being fixed in cooperation with a clamp (2), and the core column (103) being sheathed with a coil; The clamping piece (2) comprises an upper clamping piece (201) and a lower clamping piece (202), wherein the upper clamping piece (201) is arranged on both sides of the upper iron yoke (101), and the two upper clamping pieces (201) are fixedly connected by means of screws to clamp the upper iron yoke (101), and the lower clamping piece (202) is arranged on both sides of the lower iron yoke (102), and the two lower clamping pieces (202) are fixedly connected by means of screws to fix and clamp the lower iron yoke (102); The heat dissipation and moisture-proof component (3) comprises a fan (301), an air supply pipe (302), a semiconductor refrigeration box (303), an air inlet pipe (304) and an air outlet hole (305); the upper clamp (201) is fixedly connected to two mounting plates (4); the fan (301) and the semiconductor refrigeration box (303) are respectively fixedly mounted on the two mounting plates (4); the fan (301) and the semiconductor refrigeration box (303) are sealedly connected via the air supply pipe (302); the semiconductor refrigeration box (303) is sealedly connected to the air inlet pipe (304); the air inlet pipe (304) is inserted between the core column (103) and the coil; the lower clamp (202) is provided with an air outlet hole (305); the air outlet hole (305) is arranged at a corresponding position between the core column (103) of the lower clamp (202) and the coil.

2. The indoor moisture-proof and heat-dissipating dry-type transformer core according to claim 1, characterized in that: A support bar (104) is provided between the core column (103) and the coil, and a limiting hole (105) is provided on the support bar. The limiting hole (105) is sleeved and fixed on the air inlet pipe (304).

3. The indoor moisture-proof and heat-dissipating dry-type transformer core according to claim 1, characterized in that: The semiconductor refrigeration box (303) is a sealed structure, comprising a box body (501) and a semiconductor refrigeration plate (502); the semiconductor refrigeration plate (502) comprises a cold end (503) and a hot end (504); the cold end (503) is arranged in the box body (501); and the hot end (504) passes through the box body (501) to contact with the outside air for heat dissipation.

4. The indoor moisture-proof and heat-dissipating dry-type transformer core according to claim 1, characterized in that: The air outlet hole (305) is connected to an air outlet pipe (306), the top end of the air outlet pipe (306) is inserted between the coil and the core column (103), and the tail end is in a trumpet shape with a gradually increasing diameter.

5. The indoor moisture-proof and heat-dissipating dry-type transformer core according to claim 1, characterized in that: The end of the air inlet pipe (304) is connected to a nozzle (6), and the nozzle (6) has two exhaust ports (601).

6. The indoor moisture-proof and heat-dissipating dry-type transformer core according to claim 5, characterized in that: The two exhaust ports (601) of the air jet head (6) are both inclined downward, and the included angle between the two exhaust ports (601) is 90°-120°.

7. The indoor moisture-proof and heat-dissipating dry-type transformer core according to claim 1, characterized in that: A rubber damping plate (7) is provided between the mounting plate (4) and the fan (301), and between the mounting plate (4) and the semiconductor refrigeration box (303).

8. The indoor moisture-proof and heat-dissipating dry-type transformer core according to claim 1, characterized in that: A filter screen (8) is also fixed at the air inlet of the fan (301).

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