Ventilation and dehumidification device for 35kV box-type transformer

Abstract

The invention provides a ventilation and dehumidification device for a 35kV box-type transformer, and relates to the technical field of power transformers, the ventilation and dehumidification device comprises a box-type transformer substation box body, the bottom of the box-type transformer substation box body is installed at the top of a box-type transformer substation base body, through holes are formed in two opposite side walls of the box-type transformer substation base body, an air inlet pipe and an air outlet pipe are correspondingly arranged in the through holes respectively, and the air inlet pipe and the air outlet pipe are communicated with the box-type transformer substation base body. And the air inlet pipe and the air outlet pipe are respectively connected with a ventilation mechanism. The air inlet pipe and the air outlet pipe are embedded in the two side walls of the box transformer substation base body, and the ventilation mechanisms are connected to the air inlet of the air inlet pipe and the air outlet of the air outlet pipe respectively, so that the interior of the box transformer substation base body can be ventilated, it is guaranteed that the cable well in the box transformer substation base body is always in a dry, ventilated and ponding-free state, and the service life of the cable well is prolonged. Insulativity reduction caused by long-time soaking of the cable due to water accumulation in the box-type transformer substation base body is effectively avoided, and the fault rate of the box-type transformer substation cable is reduced at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of power transformers, in particular to a ventilation and dehumidification device for a 35kV box-type transformer. Background Art

[0002] Box transformer, usually referred to as box transformer, is a kind of power equipment that integrates transformer and its supporting equipment in a closed box. Its working principle is basically similar to that of ordinary transformer, that is, it uses the principle of electromagnetic induction to transfer voltage from one coil to another. When current passes through the primary coil, it generates a magnetic field, which passes through the iron core and induces current in the secondary coil, thereby generating voltage. This process realizes the conversion and distribution of electrical energy.

[0003] At present, some wind farms are located in high-altitude and high-humidity areas. The high altitude and heavy rainfall cause water to accumulate inside the cable well due to the backflow of water from the moist soil inside the box transformer matrix. At the same time, the air flow inside the box transformer matrix is ​​poor, and the water is difficult to evaporate. If the accumulated water stays for a long time and cannot be discharged and keeps soaking the cable, the insulation of the cable will be reduced. At the same time, condensation will occur inside, which will seriously affect the safe and stable operation of the box transformer, thereby causing the collector line to trip. Therefore, a ventilation and dehumidification device for 35kV box transformers is urgently needed to ensure that the cable well of the box transformer matrix always maintains a dry, ventilated and water-free environment, eliminate hidden dangers and reduce the failure rate of the box transformer cable. Summary of the invention

[0004] The present invention provides a ventilation and dehumidification device for a 35kV box-type transformer, which is used to solve at least one of the problems raised by the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses a ventilation and dehumidification device for a 35kV box-type transformer, comprising: a box-type transformer box, the bottom of which is installed on the top of a box-type transformer base, and through holes are opened on two opposite side walls of the box-type transformer base, and air inlet pipes and air outlet pipes are respectively arranged inside the through holes, and ventilation mechanisms are respectively connected to the air inlet pipes and the air outlet pipes.

[0006] Preferably, the through holes respectively opened on the inner walls on both sides of the box-type transformer base are at the same horizontal reference, the diameter of the two through holes is 11CM, and the height of the through holes from the ground is 20CM, the air inlet pipe and the air outlet pipe are straight stainless steel pipes with a diameter of 10CM, and the air inlet pipe and the air outlet pipe are tightly fitted to the through holes through sealant.

[0007] Preferably, the ventilation mechanism connected to the air inlet pipe includes a ventilation pipe, the air outlet of the ventilation pipe is connected to the air inlet of the air inlet pipe, the air inlet of the ventilation pipe is connected to a dust and rain proof cover, and a 45-degree louver is embedded inside the air inlet of the ventilation pipe, and a dustproof net is fixedly installed on the air inlet of the ventilation pipe by a fixing ring.

[0008] Preferably, the ventilation pipe is an S-shaped stainless steel pipe, and the dust and rainproof cover is connected to the air inlet of the ventilation pipe through sealant or automatic buckle.

[0009] Preferably, it also includes an auxiliary ventilation and dehumidification mechanism, which is arranged on the inner wall of the box-type transformer base, and the auxiliary ventilation and dehumidification mechanism includes: an auxiliary box, a sliding sleeve is fixedly connected to the left side wall of the auxiliary box, both ends of the guide rail are fixedly connected to the inner wall on the rear side of the box-type transformer base, the sliding sleeve is slidably connected to the guide rail, and the bottom of the auxiliary box is fixedly connected to a drying box, a drying mechanism is arranged inside the drying box, a mounting seat is fixedly installed on the left side wall of the drying box, and a guide wheel is rotatably connected to the mounting seat, a rack is fixedly installed on the rear side wall in the box-type transformer base, and the rack is located below the guide rail.

[0010] Preferably, the auxiliary box also includes a servo motor, the servo motor is fixedly installed at the bottom of the auxiliary box, the bottom of the support plate is fixedly installed at the bottom of the auxiliary box, and a driving shaft is fixedly connected to the output shaft of the servo motor, one end of the driving shaft rotates through the support plate and is fixedly connected to a worm, one end of the worm is rotatably connected to the inner wall of the right side of the auxiliary box, both ends of the rotating shaft rotate through the left and right side walls of the auxiliary box and stirring blades are fixedly installed, and a first pulley and a worm wheel are fixedly connected to the rotating shaft from left to right in sequence, the worm wheel is meshed with the worm, and a walking mechanism is arranged inside the auxiliary box, and the first pulley is used to drive the walking mechanism.

[0011] The present invention provides a ventilation and dehumidification device for a 35kV box-type transformer. Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The ventilation and dehumidification device for the 35kV box-type transformer can complete the ventilation of the box-type transformer base through the ventilation mechanism arranged in the box-type transformer base, accelerate the air flow in the cable well of the box-type transformer base, and also make the accumulated water inside the box-type transformer base due to the backflow of water due to the moist soil evaporate quickly, greatly shortening the retention time of the accumulated water, and effectively avoiding the insulation reduction of the box-type transformer cable caused by the long-term inability to drain the accumulated water and soaking the cable, thereby causing the tripping of the collector line; at the same time, it also ensures that the inside of the box-type transformer cable well is always in a dry, ventilated and water-free environment, eliminating hidden dangers and reducing the failure rate of the box-type transformer cable, effectively improving the stability and safety of the operation of the 35kV box-type transformer.

[0013] 2. The auxiliary ventilation and dehumidification mechanism of the ventilation and dehumidification device for the 35kV box-type transformer in the box-type transformer base can perform timely ventilation and dehumidification according to the actual working state inside the box-type transformer base, and can accelerate the air flow inside the box-type transformer base, while reducing the humidity inside the box-type transformer base, avoiding water accumulation inside the box-type transformer base and condensation on the box-type transformer cables. The operation is simple and convenient, so that the 35kV box-type transformer can operate safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic structural diagram of a ventilation and dehumidification device for a 35kV box-type transformer provided in an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of the structure of a ventilation duct provided in an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of the structure inside the ventilation pipe provided by an embodiment of the present invention;

[0018] Figure 4 A schematic diagram of the structure of a dust and rainproof cover provided in an embodiment of the present invention;

[0019] Figure 5 A left-side structural schematic diagram of an auxiliary ventilation and dehumidification mechanism provided in an embodiment of the present invention;

[0020] Figure 6 A schematic diagram of the structure of the connection between the auxiliary box and the stirring blades provided in an embodiment of the present invention;

[0021] Figure 7This is a left-side structural schematic diagram of a drying mechanism provided in an embodiment of the present invention.

[0022] Reference numerals:

[0023] 1. Box transformer box; 2. Box transformer base; 3. Air inlet pipe; 4. Air outlet pipe; 5. Through hole; 6. Ventilation mechanism; 7. Ventilation pipe; 8. Dust and rainproof cover; 81. Automatic buckle; 9. Shutter; 10. Dustproof net; 11. Fixed ring; 12. Auxiliary ventilation and dehumidification mechanism; 13. Auxiliary box; 14. Sliding sleeve; 15. Guide rail; 16. Drying box; 17. Drying mechanism; 18. Mounting seat; 19. Guide wheel; 20. Rack; 21. Servo motor; 22. Support plate; 23. Drive shaft; 24. Worm; 25. Rotating shaft; 26. Stirring fan blade; 27. First pulley; 28. Worm gear; 29. ​​Support shaft; 30. Second pulley; 31. Belt 1; 32. Slide 1; 33. Drive rod; 34. Slider; 35. Slide 2; 36. Articulated rod; 37. Track roller; 38. Fixed plate; 39. Drive gear; 40. Heat shield; 41. First cavity; 42. Second cavity; 43. Opening; 44. Battery; 45. Electric heater; 46. Ventilation mesh; 47. Shell; 48. Drive shaft; 49. Fan blades; 50. Third pulley; 51. Fourth pulley; 52. Belt 2. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The present invention provides the following embodiments

[0026] Example 1

[0027] The embodiment of the present invention provides a ventilation and dehumidification device for a 35kV box-type transformer, such as Figure 1-Figure 4 As shown, it includes: a transformer box body 1, the bottom of which is installed on the top of a transformer base body 2, and through holes 5 are opened on the opposite side walls of the transformer base body 2, and air inlet pipes 3 and air outlet pipes 4 are respectively arranged inside the through holes 5, and ventilation mechanisms 6 are respectively connected to the air inlet pipes 3 and the air outlet pipes 4.

[0028] Preferably, the through holes 5 respectively opened on the inner walls on both sides of the box-type transformer base 2 are at the same horizontal reference, the diameter of the two through holes 5 is 11CM, and the height of the through holes 5 from the ground is 20CM, the air inlet pipe 3 and the air outlet pipe 4 are straight stainless steel pipes with a diameter of 10CM, and the air inlet pipe 3 and the air outlet pipe 4 are tightly fitted with the through holes 5 by sealant.

[0029] Preferably, the ventilation mechanism 6 connected to the air inlet pipe 3 includes a ventilation pipe 7, the air outlet of the ventilation pipe 7 is connected to the air inlet of the air inlet pipe 3, the air inlet of the ventilation pipe 7 is connected to a dust and rain proof cover 8, and a 45-degree louver 9 is embedded inside the air inlet of the ventilation pipe 7, and a dustproof net 10 is fixedly installed on the air inlet of the ventilation pipe 7 by a fixing ring 11.

[0030] Preferably, the ventilation pipe 7 is an S-shaped stainless steel pipe, and the dust and rainproof cover 8 is connected to the air inlet of the ventilation pipe 7 through a sealant or an automatic buckle 81.

[0031] The working principle and beneficial effects of the above technical solution are:

[0032] The ventilation and dehumidification device for a 35kV box-type transformer of the present invention embeds an air inlet duct 3 and an air outlet duct 4 on both side walls of a box-type transformer base 2, and connects a ventilation mechanism 6 to the air inlet of the air inlet duct 3 and the air outlet of the air outlet duct 4, respectively, so as to realize ventilation of the interior of the box-type transformer base 2, accelerate the flow of air, and make the accumulated water evaporate quickly, effectively avoiding the long-term residence of the accumulated water inside the box-type transformer base 2, which causes the cable to be immersed for a long time and leads to the reduction of the insulation of the box-type transformer cable, and at the same time ensures that the cable well in the box-type transformer base 2 is always in a dry, ventilated and water-free environment, and can eliminate hidden dangers in time, thereby reducing the failure rate of the box-type transformer cable. The ventilation and dehumidification device of the 35kV box-type transformer effectively reduces the accumulated water and condensation inside the box-type transformer base 2 by opening through holes 5 on opposite sides of the box-type transformer base 2 and installing two sections of ventilation pipes 7 at the openings respectively. The thickened dust and rainproof cover 8 and the 45-degree louver 9 provided at the air inlet of the ventilation pipe 7 in the ventilation mechanism 6 can effectively prevent dust and rainwater from flowing back. At the same time, the thickened dustproof net 10 is fixedly installed at the air inlet of the ventilation pipe 7 through a fixing ring 11, which also plays a role in blocking dust from entering the box-type transformer base 2, and can also prevent mosquitoes and mice from entering the box-type transformer base 2, thereby causing safety hazards to the cables in the box-type transformer base 2.

[0033] Secondly, when installing the ventilation mechanism 6, the actual environment of the transformer installation site must be determined to determine the direction of the through hole 5 on the transformer base 2. First, according to the historical wind direction data of the booster station, a wind direction with the highest frequency is selected as the reference wind direction. The air inlet of the transformer base 2 should be located on the upwind side of the wind direction to facilitate the entry of fresh air and the discharge of polluted gases. The air outlet of the transformer base 2 should be set on the downwind side of the wind direction to ensure that the polluted gases can be quickly and effectively taken away and the inside of the foundation is kept dry. When drilling a hole on a specific box-type transformer base 2, prepare tools such as an electric drill, a drill bit, a measuring tool, a marking pen, a hammer, a screwdriver, a wrench, pliers, etc.; then, after determining the air inlet and outlet sides, select a dot on each side, parallel to the reference wind direction, and drill a hole with a diameter of 11CM on the box-type transformer base 2, 20CM from the ground, and use a measuring tool and a marking pen to mark the position and size of the hole on the box-type transformer base 2; then, according to the marked position and size, use an electric drill and a drill bit to drill a hole on the box-type transformer base 2, and use a drill bit slightly larger than the diameter of the hole to ensure that the box-type transformer base 2 can smoothly pass through the air inlet duct 3 and the air outlet duct 4; then use a brush and a shovel to remove debris and dust around the hole to ensure that the through hole 5 is clean and tidy; finally, use a flashlight to check whether the hole meets the requirements. If necessary, use an electric drill and a drill bit to trim it.

[0034] At the same time, after opening a hole on the box-type transformer base 2, the air inlet duct 3 and the air outlet duct 4 are installed and fixed; first, the air inlet duct 3 and the air outlet duct 4 of a straight stainless steel tube with a diameter of 10CM are inserted into the through hole 5, and the ventilation pipe 7 of an S-shaped stainless steel tube is selected to connect and combine with the air inlet duct 3 and the air outlet duct 4, and the dustproof and rainproof cover 8 is connected to the top of the ventilation pipe 7 to ensure that the dustproof and rainproof cover 8 matches the size of the ventilation pipe 7. Use sealant or self-provided buckles to fix the dustproof and rainproof cover 8 on the ventilation pipe 7, clean both ends to ensure that the surface is dry, clean, oil-free and dust-free. If necessary, the surface can be polished to make it smoother so that the sealant can adhere better; then, according to the size and shape of the ventilation pipe 7, apply the sealant on the surface of the ventilation pipe 7. When applying, the thickness of the sealant should be uniform and should be Leave some length on both sides of the sealant so that the sealant can be pressed onto the surface of the object; then use a tool to press the sealant applied to the surface of the ventilation pipe 7 into the gap of the transformer base 2 to ensure that the sealant fits tightly to the transformer base 2, and start curing after checking that there are no bubbles or gaps. The curing time must not be less than 30 minutes; then after the sealant is cured, check the sealing effect. If any defects or holes are found in the sealant, they should be repaired in time; then place the anti-small animal plate at the root of the ventilation pipe 7, ensure that it matches the size of the ventilation pipe 7, and use sealant to fix the anti-small animal plate on the ventilation pipe 7; finally, after the installation is completed, check whether the dust and rain cover 8 and the anti-small animal plate are firmly fixed to the ventilation pipe 7 to ensure that they can effectively protect the ventilation pipe 7 from the invasion of rain and small animals.

[0035] The above-mentioned ventilation and dehumidification device for 35kV box-type transformer can complete the ventilation of the box-type transformer base 2 through the ventilation mechanism 6 arranged in the box-type transformer base 2, and accelerate the air flow in the cable well of the box-type transformer base 2, and also make the accumulated water inside the box-type transformer base 2 due to the backflow of water due to the moist soil evaporate quickly, greatly shortening the residence time of the accumulated water, and effectively avoiding the insulation reduction of the box-type transformer cable caused by the accumulated water not being able to be discharged for a long time and soaking the cable, thereby causing the tripping of the collector line; at the same time, it ensures that the cable well in the box-type transformer base 2 is always in a dry, ventilated and water-free environment, eliminating hidden dangers and reducing the failure rate of the box-type transformer cable, effectively improving the stability and safety of the operation of the 35kV box-type transformer.

[0036] Example 2

[0037] On the basis of Example 1, Figure 5-Figure 6 As shown, it also includes an auxiliary ventilation and dehumidification mechanism 12, which is arranged on the inner wall of the box-changing base 2. The auxiliary ventilation and dehumidification mechanism 12 includes: an auxiliary box 13, a sliding sleeve 14 is fixedly connected to the left side wall of the auxiliary box 13, both ends of the guide rail 15 are fixedly connected to the inner wall of the rear side of the box-changing base 2, the sliding sleeve 14 is slidably connected to the guide rail 15, and a drying box 16 is fixedly connected to the bottom of the auxiliary box 13, a drying mechanism 17 is arranged inside the drying box 16, a mounting seat 18 is fixedly installed on the left side wall of the drying box 16, and a guide wheel 19 is rotatably connected to the mounting seat 18, a rack 20 is fixedly installed on the rear side wall inside the box-changing base 2, and the rack 20 is located below the guide rail 15.

[0038] Preferably, the auxiliary box 13 also includes a servo motor 21, which is fixedly installed at the bottom of the auxiliary box 13, and the bottom of the support plate 22 is fixedly installed at the bottom of the auxiliary box 13, and a drive shaft 23 is fixedly connected to the output shaft of the servo motor 21, one end of the drive shaft 23 rotates through the support plate 22 and is fixedly connected to a worm 24, one end of the worm 24 is rotatably connected to the inner wall on the right side of the auxiliary box 13, and both ends of the rotating shaft 25 rotate through the left and right side walls of the auxiliary box 13 to fix stirring blades 26, and a first pulley 27 and a worm wheel 28 are fixedly connected to the rotating shaft 25 from left to right in sequence, and the worm wheel 28 is meshed with the worm 24, and a walking mechanism is arranged inside the auxiliary box 13, and the first pulley 27 is used to drive the walking mechanism.

[0039] Preferably, the walking mechanism includes a support shaft 29, both ends of which are rotatably connected to the inner walls on both sides of the auxiliary box 13, a second pulley 30 is fixedly installed on the support shaft 29, and the second pulley 30 is connected to the first pulley 27 through a belt 1 31, a slide 1 32 is fixedly connected to the top of the auxiliary box 13, a driving rod 33 is slidably connected to the slide 1 32 through a slider 34, and one end of the driving rod 33 is fixedly connected to a slide 2 35, a hinge rod 36 is fixedly connected to the second pulley 30 away from the center, and the hinge rod 36 is slidably connected to the slide 2 35, the upper end of the track roller 37 is rotatably connected to the top of the auxiliary box 13, a fixed plate 38 is fixedly installed on the rear side wall of the auxiliary box 13, and the lower end of the track roller 37 is rotatably passed through the fixed plate 38 and is fixedly connected to a driving gear 39, and the driving gear 39 passes through the side wall of the auxiliary box 13 and meshes with the rack 20.

[0040] The working principle and beneficial effects of the above technical solution are:

[0041] The auxiliary ventilation and dehumidification mechanism 12 provided in the ventilation and dehumidification device for the 35kV box-type transformer accelerates the air flow inside the box-type transformer base 2, thereby maintaining a dry and water-free environment inside the box-type transformer base 2, avoiding the accumulated water inside from soaking the cables for a long time, causing condensation on the cable surface and reducing the insulation of the box-type transformer cables, thereby causing safety hazards during the operation of the box-type transformer. When the auxiliary ventilation and dehumidification mechanism 12 starts to work, the servo motor 21 arranged in the auxiliary box 13 is first rotated forward and reversely, driving the driving shaft 23 fixedly connected to the output shaft of the servo motor 21 to rotate, so that the worm 24 fixedly connected to the driving shaft 23 rotates synchronously, and the worm wheel 28 meshing with the worm 24 drives the rotating shaft 25 fixedly connected to the worm wheel 28 to rotate synchronously. At the same time, the stirring blades 26 fixedly connected to the two ends of the rotating shaft 25 rotate outside the auxiliary box 13, and the air inside the box transformer base 2 is quickly stirred, which accelerates the flow of internal air, intensifies the evaporation of water, and makes the surface of the internal box transformer cable quickly dried by the wind, avoiding the safety hazard of the box transformer operation caused by the reduction of the insulation of the box transformer cable.

[0042] The rotating shaft 25 can be driven by the servo motor 21 to achieve forward and reverse rotation. When the first pulley 27 fixedly connected to the rotating shaft 25 rotates along the rotating shaft 25, the second pulley 30 is driven by the first pulley 27 connected by the belt 1 31 to rotate along the support shaft 29, so that the driving rod 33 connected to the second pulley 30 through the slide groove 25 and the hinge rod 36 can rotate along the support shaft 29. At the same time, the driving rod 33 slidably connected to the slide groove 1 32 through the slider 34 slides up and down along the slide groove 1 32 driven by the second pulley 30. At the same time, the driving end of the driving rod 33 slides in the groove on the track roller 37, so that the track roller 37 can rotate, and the driving gear 39 fixedly connected to the lower end of the track roller 37 rotates synchronously. The auxiliary box 13 is moved left and right by the driving gear 39 meshing with the gear fixedly installed on the inner wall of the rear side of the box-type transformer base 2. At the same time, the sliding sleeve 14 moves horizontally along the guide rail 15 and the guide wheel 19 slides horizontally along the inner wall of the box-type transformer base 2 on the mounting seat 18, so that the auxiliary ventilation and dehumidification mechanism 12 can move smoothly to the working position, and can also cover all positions inside the entire box-type transformer base 2, so as to dry the box-type transformer cable inside the box-type transformer base 2 and effectively remove the condensation on the surface, reduce the air humidity of the cable well in the box-type transformer base 2, and effectively avoid the safety hazards of the box-type transformer cable during operation caused by water accumulation and humid air inside the box-type transformer base 2, and effectively extend the service life of the box-type transformer cable. The device is easy to install and maintain and has high reliability.

[0043] Example 3

[0044] On the basis of Example 1 or 2, Figure 7 As shown, the drying mechanism 17 includes a heat insulation plate 40, which divides the drying box 16 into a first cavity 41 and a second cavity 42 on the left and right. An opening 43 is opened at the lower part of the heat insulation plate 40, a battery 44 is arranged at the upper part of the first cavity 41, an electric heater 45 is arranged at the lower part of the first cavity 41, a ventilation mesh plate 46 is embedded in the rear side wall of the drying box 16, a shell 47 is fixedly connected to the top of the second cavity 42, one end of the transmission shaft 48 is rotatably connected to the rear inner wall of the heat insulation plate 40, and the other end of the transmission shaft 48 is rotatably passed through the two side walls of the shell 47 and is fixedly connected with a blowing fan blade 49, a third pulley 50 is fixedly installed on the transmission shaft 48 in the shell 47, a fourth pulley 51 is fixedly installed on the drive shaft 23, and the fourth pulley 51 is connected to the third pulley 50 by a belt 2 52.

[0045] The working principle and beneficial effects of the above technical solution are:

[0046] When the drying mechanism 17 moves horizontally along the inner wall of the box-changing base body 2 with the auxiliary ventilation and dehumidification mechanism 12, the fourth pulley 51 on the driving shaft 23 is driven to rotate as the servo motor 21 rotates, and then the third pulley 50 connected by the belt 2 52 is rotated on the transmission shaft 48. Driven by the third pulley 50, the transmission shaft 48 makes the fan blade 49 fixedly connected to one end of the transmission shaft 48 in the second cavity 42 rotate. At this time, the battery 44 arranged in the first cavity 41 drives the electric heater 45 to work. As the electric heater 45 runs and generates heat, the heat is transported from the ventilation mesh plate 46 embedded in the rear side wall of the drying box 16 into the first cavity 41. The air temperature in a cavity 41 rises, and at the same time, under the action of the blowing fan blades 49, the hot air in the first cavity 41 enters the second cavity 42 from the opening 43 of the insulation board 40, and finally the blowing fan blades 49 blow the continuous hot air out from the air outlet of the drying box 16. As the auxiliary ventilation and dehumidification mechanism 12 moves, the hot air is continuously blown toward the cables in the transformer base 2, so that the condensation attached to the surface of the transformer cable is effectively removed, and at the same time, the circulating air in the transformer base 2 can be dried, thereby reducing the air humidity in the transformer base 2 and shortening the residence time of water in the transformer base 2, thereby effectively ensuring that the interior of the transformer base 2 is always in a dry and water-free environment, ensuring the safe operation of the transformer cable.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ventilation and dehumidification device for a 35kV box-type transformer, characterized in that: include: A transformer box (1), wherein the bottom of the transformer box (1) is mounted on the top of a transformer base (2), through holes (5) are provided on two opposite side walls of the transformer base (2), an air inlet pipe (3) and an air outlet pipe (4) are respectively provided inside the through holes (5), and ventilation mechanisms (6) are respectively connected to the air inlet pipe (3) and the air outlet pipe (4).

2. A ventilation and dehumidification device for a 35kV box-type transformer according to claim 1, characterized in that: The through holes (5) respectively opened on the inner walls of both sides of the box-type transformer base (2) are at the same horizontal reference, the diameter of the two through holes (5) is 11CM, and the height of the through holes (5) from the ground is 20CM, the air inlet pipe (3) and the air outlet pipe (4) are straight stainless steel pipes with a diameter of 10CM, and the air inlet pipe (3) and the air outlet pipe (4) are tightly fitted with the through holes (5) by means of sealant.

3. A ventilation and dehumidification device for a 35kV box-type transformer according to claim 1, characterized in that: The ventilation mechanism (6) connected to the air inlet pipe (3) comprises a ventilation pipe (7), the air outlet of the ventilation pipe (7) is connected to the air inlet of the air inlet pipe (3), the air inlet of the ventilation pipe (7) is connected to a dust and rainproof cover (8), and a 45-degree louver (9) is embedded inside the air inlet of the ventilation pipe (7), and a dustproof net (10) is fixedly installed on the air inlet of the ventilation pipe (7) through a fixing ring (11).

4. A ventilation and dehumidification device for a 35kV box-type transformer according to claim 3, characterized in that: The ventilation pipe (7) is selected to be an S-shaped stainless steel pipe, and the dust and rainproof cover (8) is connected to the air inlet of the ventilation pipe (7) through a sealant or an automatic buckle (81).

5. A ventilation and dehumidification device for a 35kV box-type transformer according to claim 1, characterized in that: The auxiliary ventilation and dehumidification device (12) is also included. The auxiliary ventilation and dehumidification device (12) is arranged on the inner side wall of the box transformer base (2). The auxiliary ventilation and dehumidification device (12) comprises: an auxiliary box (13). A sliding sleeve (14) is fixedly connected to the left side wall of the auxiliary box (13). Both ends of a guide rail (15) are fixedly connected to the inner wall of the rear side of the box transformer base (2). The sliding sleeve (14) is slidably connected to the guide rail (15). A drying box (16) is fixedly connected to the bottom of the auxiliary box (13). A drying mechanism (17) is arranged inside the drying box (16). A mounting seat (18) is fixedly mounted on the left side wall of the drying box (16). A guide wheel (19) is rotatably connected to the mounting seat (18). A rack (20) is fixedly mounted on the rear side wall inside the box transformer base (2), and the rack (20) is located below the guide rail (15).

6. A ventilation and dehumidification device for a 35kV box-type transformer according to claim 5, characterized in that: The auxiliary box (13) further comprises a servo motor (21), the servo motor (21) being fixedly mounted on the bottom of the auxiliary box (13), the bottom of the support plate (22) being fixedly mounted on the bottom of the auxiliary box (13), and a driving shaft (23) being fixedly connected to the output shaft of the servo motor (21), one end of the driving shaft (23) being rotatably penetrated through the support plate (22) and being fixedly connected to a worm (24), one end of the worm (24) being rotatably connected to the inner wall on the right side of the auxiliary box (13), both ends of the rotating shaft (25) being rotatably penetrated through the left and right side walls of the auxiliary box (13) and being fixedly mounted with stirring blades (26), and a first pulley (27) and a worm wheel (28) being fixedly connected to the rotating shaft (25) in sequence from left to right, the worm wheel (28) being meshed with the worm (24), a walking mechanism being arranged inside the auxiliary box (13), and the first pulley (27) being used to drive the walking mechanism.

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