CN116580922A - An energy-saving dry-type transformer and its working method - Google Patents

Abstract

The invention relates to an energy-saving dry-type transformer and a working method thereof. An energy-saving dry-type transformer comprises a shell, a transformer body, a plurality of radiating holes and a dust removing device; the side part of the shell is provided with a maintenance door, one side of the maintenance door is rotationally connected with the shell, the rotation axis of the maintenance door is vertically arranged, and one side of the maintenance door far away from the rotation axis of the maintenance door is provided with a door lock; the dust removing device comprises a wind power driving device, a lifting device, a baffle plate, two mounting plates and a brush; the wind power driving device comprises a plurality of wind power blades, a central shaft, a fixed pile and a linkage device; the linkage device is respectively connected with the central shaft and the lifting device and is used for driving the lifting device through wind power. The invention solves the technical problems of how to automatically clean the radiating holes by using wind power and automatically dustproof and rainproof the radiating holes by arranging the wind power driving device and the lifting device.

Description

An energy-saving dry-type transformer and its working method

technical field

The invention relates to the field of transformers, in particular to an energy-saving dry-type transformer and a working method thereof.

Background technique

Dry-type transformers are widely used in local lighting, high-rise buildings, airports, wharf CNC mechanical equipment and other places. Simply put, dry-type transformers refer to transformers whose iron core and windings are not immersed in insulating oil. The cooling method is divided into natural air cooling and forced air cooling. When naturally air-cooled, the transformer can operate continuously for a long time at the rated capacity. When forced air cooling, the output capacity of the transformer can be increased by 50%. It is suitable for intermittent overload operation, or emergency overload operation. Due to the large increase in load loss and impedance voltage during overload, it is in a non-economic operating state, so it should not be operated continuously for a long time.

At present, it is necessary for the staff to regularly clean the heat dissipation holes to maintain a good heat dissipation effect. When the outside wind is strong, a large amount of sand and dust will be rolled up. When the wind direction is towards the heat dissipation hole, a large amount of sand and dust will be easily blown into the heat dissipation hole. When it rains, the wind also tends to blow rainwater into the cooling holes. Therefore, we provide an energy-saving dry-type transformer and its working method.

Contents of the invention

The invention aims to solve the technical problem of how to use wind to automatically clean the heat dissipation holes and automatically prevent dust and rain for the heat dissipation holes, and provides an energy-saving dry-type transformer and its working method.

The technical solution adopted by the present invention to solve its technical problems is:

An energy-saving dry-type transformer includes a casing, a transformer body, a plurality of cooling holes, and a dust removal device. A maintenance door is provided on the side of the housing, one side of the maintenance door is rotationally connected with the housing, the rotation axis of the maintenance door is set vertically, and a door lock is provided on the side of the maintenance door away from the rotation axis. The transformer body is arranged in the casing. Several cooling holes are dispersedly arranged on the maintenance door and communicate with the inside of the casing. The dust removal device includes a wind drive device, a lifting device, a baffle, two mounting plates, and a brush. Two mounting plates are fixed on the outer surface of the maintenance door, and the two mounting plates are vertically arranged on both sides of several heat dissipation holes, and the opposite sides of the two mounting plates are provided with a first slideway, and the first slideway is vertically arranged , a first slide block is slidably arranged in the first slideway. The baffle is vertically arranged between the two mounting plates and under the plurality of cooling holes, and the baffle is fixedly connected with the two first sliders. The lifting device is arranged on the top of the casing and is connected with the baffle to drive the baffle to rise to cover the cooling holes. The wind driving device includes several wind blades, a central shaft, fixed piles and a linkage device. The fixing pile is vertically fixed on the top of the casing. The central shaft runs through the fixed pile transversely, and is flexibly connected with the fixed pile through a bearing, and the axial direction of the central shaft is perpendicular to the maintenance door. Several wind blades are arranged around the central axis and fixedly connected with the central axis. The linkage device is respectively connected with the central shaft and the lifting device, and is used to drive the lifting device through wind.

When the outside wind is strong, a large amount of dust will be mixed in the wind. When the wind direction is towards the heat dissipation hole, the wind pushes the wind blades to rotate, and the wind blades drive the central shaft to rotate forward for a certain angle. The central shaft drives the lifting device to start through the linkage device. The lifting device drives the baffle to rise to cover some cooling holes to prevent the wind from carrying a large amount of dust into the casing and causing damage to the transformer body. When the wind direction is facing away from the heat dissipation holes, the wind pushes the wind blades to rotate in the opposite direction, and the wind blades drive the central shaft to reversely rotate at a certain angle. The central shaft drives the lifting device to start through the linkage device, and the lifting device drives the baffle to descend, exposing some cooling holes. This enables the transformer body to dissipate heat naturally through a number of cooling holes. When the lifting device drives the baffle to rise, the baffle drives the brush to rise, and the brush cleans some heat dissipation holes to prevent dust from blocking the heat dissipation holes and affecting the heat dissipation effect of the heat dissipation holes. In the present invention, by setting the wind driving device, when the outside wind and dust are large, when the wind direction is towards the heat dissipation hole, the heat dissipation hole is covered, and only when the wind direction is away from the heat dissipation hole, the heat dissipation hole is exposed, preventing the wind from carrying a large amount of dust into the casing. The use of wind power saves energy. By arranging the brush to move with the baffle plate, several heat dissipation holes are cleaned to prevent dust from clogging the heat dissipation holes, and energy is saved by using wind force.

Further, the lifting device includes a take-up roller and several take-up ropes. The winding roller is horizontally arranged above the casing, and is movably connected with the maintenance door through a support frame. A number of winding ropes are arranged vertically on the side of the maintenance door between the two mounting plates. The winding ropes are evenly spaced and arranged. The lower end of the winding rope is connected to the top of the baffle, and the upper end is connected to the winding roller. The rope is taut.

The rewinding roller rotates forwardly to rewind some rewinding ropes, and the rewinding ropes drive the baffle plate to rise to block some cooling holes. When there is no wind, the baffle plate descends under the effect of its own weight, and the winding rollers are driven to rotate reversely by several winding ropes, and the winding rollers drive the central shaft to reversely rotate back to the initial position through the linkage device. By arranging a plurality of rewinding ropes arranged at even intervals, the objects colliding with the plurality of heat dissipation holes can be bounced off, the heat dissipation holes are protected, and the heat dissipation holes are prevented from being blocked.

Further, a rain shield is fixedly arranged on the outer surface of the maintenance door, and the rain shield is arranged obliquely, above several cooling holes, and connected to the upper parts of the two mounting plates. Several winding ropes run through the rain shield. The top of the baffle is provided with a rubber layer.

When it is raining, if the wind is relatively strong and the wind direction is towards the heat dissipation hole, the wind will push the wind blades to rotate, the wind blades will drive the central shaft to rotate forward, and the central shaft will drive the winding roller to rotate through the linkage device to wind up several winding ropes. The winding rope drives the baffle plate to rise until the baffle plate joins with the rain shield to cover some cooling holes. When it rains, if the wind is relatively strong and the wind direction is towards the heat dissipation holes, rainwater will be blown into several heat dissipation holes, which may easily cause damage to the transformer body. In rainy days, the rain shield, two mounting plates, and baffles are combined to form a box shape with an opening downward, which can form a comprehensive protection for several heat dissipation holes, prevent rainwater from entering the housing through several heat dissipation holes, and cause damage to the transformer body, and There is a certain distance between the baffle and the maintenance door, and several cooling holes can also dissipate heat from the transformer body in rainy days.

Further, the linkage device includes a transmission shaft, a transmission belt, a driving pulley, a driven pulley, a first bevel gear, and a second bevel gear. The transmission shaft is horizontally arranged above the casing and is movably connected with the casing through a support frame. The axis of the transmission shaft is parallel to the axis of the central shaft, and the transmission shaft is on the side away from the rotating shaft of the maintenance door. The driving pulley is sheathed on the central shaft and fixedly connected with the central shaft. The driven pulley is sleeved on the transmission shaft and fixedly connected with the transmission shaft. The drive belt is sheathed on the driving pulley and the driven pulley. The first bevel gear is fixedly connected with the rotating shaft at one end of the winding roller. The second bevel gear is fixed on the end of the transmission shaft close to the first bevel gear and meshes with the first bevel gear.

When the wind pushes the wind blades to rotate, and the wind blades drive the central shaft to rotate, the central shaft drives the driving pulley, the driving belt, and the driven pulley to rotate, and the driven pulley drives the transmission shaft to rotate, and the transmission shaft passes through the first bevel gear and the second bevel gear The winding roller is driven to rotate, and the winding roller rewinds several winding ropes. When the transformer needs to be repaired, the staff unlocks the door lock, and then turns to open the maintenance door. The maintenance door drives the lifting device to move, so that the first bevel gear and the second bevel gear are separated. After the maintenance is completed, the staff closes the maintenance door. Make the first bevel gear mesh with the second bevel gear, and then lock the door lock. During maintenance, the wind drive device is separated from the lifting device. At this time, the external wind will not drive the baffle up and down through the wind drive device, and the vibration of the shell is small, thereby preventing the vibration and sound generated by the baffle lift from affecting the maintenance process. Make an impact and facilitate maintenance.

Further, the dust removal device includes a limit rod and a vibrating plate. The vibrating plate is made of spring steel and is fixed on the top of the service door. The limit rod is connected with the vibrating plate.

When the wind direction is away from the cooling holes, the wind pushes the wind blades to rotate in the opposite direction, and the wind blades drive the central shaft to rotate in the opposite direction for a certain angle, and the central shaft drives the limit rod to rotate until the limit rod collides with the vibration plate, and the vibration plate vibrates. Drive the maintenance door to vibrate, and clean the dust in some cooling holes. By setting the limit rod and the vibrating plate, it can prevent the wind facing away from the heat dissipation holes from driving the winding roller to reversely rotate to wind up the winding rope, and prevent the winding rope from driving the baffles to lift up some heat dissipation holes when the wind direction is away from the heat dissipation holes. Shading affects the cooling effect of the cooling holes.

Further, the dust removal device includes a locking device and a pushing device. A second slideway is arranged on the top surface of the casing, the second slideway is a T-shaped slideway, the second slideway is parallel to the axis of the central shaft, and a second slide block is slidably arranged in the second slideway. The locking device is used to lock the limiting rod, and the locking device is outside the rotation range of the limiting rod. The locking device includes a moving block, which is arranged above the casing and is fixedly connected with the second sliding block. The pushing device is arranged on the side of the moving block away from the maintenance door, and is connected with the moving block, and is used for pushing the locking device to move within the rotation range of the limit lever when it rains.

When it is raining, the pushing device starts, and the pushing device pushes the moving block to move, so that the locking device moves to the rotation range of the limit rod. When the central shaft drives the limit rod to rotate forward for a certain angle, the limit rod is locked by the locking device. Therefore, the central axis is fixed, and the baffle is fixed, so that the baffle continuously shields the cooling holes, preventing rainwater from entering the housing through the cooling holes.

Further, the locking device includes a locking lever and a return spring. A sliding groove is arranged on the side of the moving block close to the maintenance door, and the sliding groove is parallel to the central axis. The locking rod is slidably arranged in the sliding groove, one side of the locking rod is a pushing surface, and the pushing surface is an inclined surface corresponding to the rotation direction of the limiting rod. The return spring is arranged in the sliding groove and is located inside the locking rod, and the two ends of the returning spring are respectively connected with the locking rod and the moving block.

When it is raining, the pushing device starts, and the pushing device pushes the moving block to move, so that the locking rod moves to the rotation range of the limit rod. When the central shaft drives the limit rod to rotate forward at a certain angle, the limit rod pushes and locks through the pushing surface. The rod enters the sliding groove, and then the locking rod pops out under the action of the return spring, and connects with the limit rod to prevent the rotation of the limit rod and the reverse of the central axis. board fixed.

Further, the pushing device includes a fixed block, a water collecting bucket, and a telescopic spring. The fixed block is arranged on the top of the casing, on the side of the moving block away from the maintenance door, and the fixed block is fixedly connected with the casing. The telescopic spring is arranged between the fixed block and the movable block, and its two ends are respectively connected with the fixed block and the movable block. A third slideway is arranged on the side of the moving block close to the fixed block, the third slideway is arranged vertically, and the third slideway is provided with a third slideway. The water collecting bucket is set above the telescopic spring, between the fixed block and the moving block, the water collecting bucket is fixedly connected with the third sliding block, the outer surface of the water collecting bucket is connected with the fixed block, and the water collecting bucket is connected with the fixed block The outer side of the wall is an inclined surface, which is used to collect rainwater and push the moving block to move when it rains.

When it rains, the weight of the rainwater collected by the water collecting bucket increases, and the fixed block and the moving block are extruded, so that the moving block is far away from the fixed block, and the moving block drives the locking bar to move within the rotation range of the limit bar. After the rain stops, the evaporation weight of the rainwater in the water collection bucket decreases, and the fixed block and the moving block approach each other under the action of the telescopic spring, and the moving block drives the locking lever to move away from the limit lever, so that the central axis and the wind blades can follow the wind direction again turn.

A working method of an energy-saving dry-type transformer. When it rains, the water collecting bucket collects rainwater and the weight increases, squeezing the fixed block and the moving block, so that the moving block is far away from the fixed block, and the moving block drives the locking rod to enter the rotation range of the limit rod Inside. After the rain stopped, the rainwater evaporation weight in the water collecting bucket was reduced, and the fixed block and the moving block approached each other under the action of the telescopic spring, and the moving block drove the locking bar to move away from the limit bar.

By automatically locking the limit lever when it rains, the baffle can continuously block rainwater, preventing rainwater from entering the casing through a plurality of cooling holes, thereby damaging the transformer body.

Further, when the transformer needs to be repaired, the staff unlocks the door lock, and then turns to open the maintenance door. The maintenance door drives the lifting device to move, so that the first bevel gear and the second bevel gear are separated. When the staff completes the maintenance, close the Repair the door, make the first bevel gear mesh with the second bevel gear, and then lock the door lock.

During maintenance, the wind drive device is separated from the lifting device. At this time, the external wind will not drive the baffle up and down through the wind drive device, and the vibration of the shell is small, thereby preventing the vibration and sound generated by the baffle lift from affecting the maintenance process. Make an impact and facilitate maintenance.

Beneficial effects of the present invention:

1. By setting up the wind drive device, when the wind and dust in the outside world are large, when the wind direction is towards the heat dissipation hole, the heat dissipation hole will be covered, and only when the wind direction is away from the heat dissipation hole, the heat dissipation hole will be exposed to prevent the wind from carrying a large amount of dust into the housing. The use of wind power saves energy.

2. During maintenance, separate the wind drive device from the lifting device. At this time, the outside wind will not drive the baffle up and down through the wind drive device, and the vibration of the shell is small, thereby preventing the vibration and sound generated by the baffle lift from affecting the machine. The maintenance process is affected, and it is convenient to carry out maintenance.

3. By automatically locking the limit lever when it rains, the baffle can continuously block the rainwater and prevent the rainwater from entering the housing through a number of cooling holes, thereby damaging the transformer body.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the energy-saving dry-type transformer;

Fig. 2 is a schematic diagram of the energy-saving dry-type transformer.

Explanation of reference signs:

1. Shell; 11. Transformer body; 12. Maintenance door; 13. Cooling holes; 14. Vibration plate; 2. Mounting plate; 21. Baffle plate; 211. Brush; ; 31, wind blade; 32, limit rod; 33, fixed pile; 34, driving pulley; 4, drive shaft; 41, drive belt; 42, driven pulley; 43, second bevel gear; 44, first cone Gear; 5, moving block; 51, locking lever; 511, return spring; 52, water collecting bucket; 53, telescopic spring; 54, fixed block; 6, winding roller; 61, winding rope.

Detailed ways

The conception and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments, so as to fully understand the purpose, features and effects of the present invention.

As shown in Figure 1, an energy-saving dry-type transformer includes a housing 1, a transformer body 11, a number of cooling holes 13, and a dust removal device. The side of the housing 1 is provided with a maintenance door 12, one side of the maintenance door 12 is rotationally connected with the housing 1, the rotation axis of the maintenance door 12 is vertically arranged, and the side of the maintenance door 12 away from the rotation axis is provided with a door lock. The transformer body 11 is disposed in the casing 1 . A plurality of cooling holes 13 are distributed on the maintenance door 12 and communicate with the inside of the casing 1 . The dust removal device includes a wind drive device, a lifting device, a baffle plate 21, two mounting plates 2, and a hair brush 211. Two mounting plates 2 are fixed on the outer surface of the maintenance door 12, and the two mounting plates 2 are respectively vertically arranged on both sides of a plurality of cooling holes 13, and the opposite sides of the two mounting plates 2 are provided with a first slideway, the first The slideway is arranged vertically, and a first slide block is slidably arranged in the first slideway. The baffle plate 21 is vertically arranged between the two mounting plates 2 and under the plurality of cooling holes 13 , and the baffle plate 21 is fixedly connected with the two first sliders. The lifting device is arranged on the top of the casing 1 and is connected with the baffle 21 for driving the baffle 21 to rise to cover the plurality of cooling holes 13 . The wind driving device includes four wind blades 31, a central shaft 3, a fixed pile 33, and a linkage device. The fixing pile 33 is vertically fixed on the top of the casing 1 . The central shaft 3 runs through the fixed pile 33 transversely, and is movably connected with the fixed pile 33 through a bearing, and the axial direction of the central shaft 3 is perpendicular to the maintenance door 12 . Four wind blades 31 are arranged around the central axis 3 and fixedly connected with the central axis 3 . The linkage device is respectively connected with the central shaft 3 and the lifting device, and is used to drive the lifting device by wind power.

When the outside wind is strong, a large amount of dust will be mixed in the wind. When the wind direction is towards the cooling hole 13, the wind pushes the wind blade 31 to rotate, and the wind blade 31 drives the central shaft 3 to rotate forward at a certain angle, and the central shaft 3 passes through the linkage device. Drive the lifting device to start, and the lifting device drives the baffle plate 21 to rise to cover some cooling holes 13, preventing the wind from carrying a large amount of dust into the housing 1 and causing damage to the transformer body 11. When the wind direction faces away from the heat dissipation holes 13, the wind pushes the wind blades 31 to rotate in the opposite direction, and the wind blades 31 drive the central shaft 3 to reversely rotate at a certain angle, and the central shaft 3 drives the lifting device to start through the linkage device, and the lifting device drives the baffle 21 to descend, The plurality of cooling holes 13 are exposed so that the transformer body 11 can dissipate heat naturally through the plurality of cooling holes 13 . When the lifting device drives the baffle plate 21 to rise, the baffle plate 21 drives the hair brush 211 to rise, and the hair brush 211 cleans up some heat dissipation holes 13 to prevent dust from blocking the heat dissipation holes 13 and affecting the heat dissipation effect of the heat dissipation holes 13. In the present invention, by setting the wind-driven device, when the outside wind and dust are large, when the wind direction is towards the heat dissipation hole 13, the heat dissipation hole 13 is blocked, and only when the wind direction is away from the heat dissipation hole 13, the heat dissipation hole 13 is exposed, so as to prevent the wind from carrying a large amount of dust Entering into the housing 1, the wind power is used to save energy. By arranging the brush 211 to move with the baffle plate 21, several cooling holes 13 are cleaned to prevent dust from clogging the cooling holes 13, and energy is saved by using wind force.

The lifting device includes a winding roller 6 and several winding ropes 61 . The winding roller 6 is arranged laterally above the casing 1 and is movably connected with the maintenance door 12 through a support frame. Some winding ropes 61 are vertically arranged on the side of the maintenance door 12, between the two mounting plates 2, and some winding ropes 61 are arranged at even intervals, the lower end of the winding rope 61 is connected with the top of the baffle plate 21, and the upper end is connected with the top of the baffle plate 21. Roller 6 is connected, and take-up rope 61 is taut state.

The winding roller 6 rotates in the forward direction to wind up a plurality of winding ropes 61 , and the winding ropes 61 drive the baffle plate 21 to rise to block the plurality of cooling holes 13 . When there is no wind, the baffle plate 21 descends under the effect of its own weight, and the winding roller 6 is driven to rotate reversely by several winding ropes 61, and the winding roller 6 drives the central shaft 3 to reversely rotate back to the initial position through the linkage device. By arranging a plurality of rewinding ropes 61 arranged at even intervals, the objects colliding with the plurality of heat dissipation holes 13 can be bounced off, the heat dissipation holes 13 are protected, and the heat dissipation holes 13 are prevented from being blocked.

A rain shield 22 is fixedly arranged on the outer surface of the maintenance door 12, and the rain shield 22 is arranged obliquely, above the plurality of cooling holes 13, and connected with the tops of the two mounting plates 2. Several winding ropes 61 run through the rain shield 22 . The top of the baffle 21 is provided with a rubber layer.

When it is raining, if the wind is relatively strong and the wind direction is towards the heat dissipation holes 13, the wind pushes the wind blades 31 to rotate, and the wind blades 31 drive the central shaft 3 to rotate in the forward direction, and the central shaft 3 drives the winding roller 6 to rotate through the linkage device. The rope 61 is rolled up, and the winding rope 61 drives the baffle plate 21 to rise until the baffle plate 21 connects with the rain shield 22, and some cooling holes 13 are blocked. When it is raining, if the wind is relatively strong and the wind direction is towards the cooling holes 13 , rainwater will be blown into the cooling holes 13 , which will easily cause damage to the transformer body 11 . In rainy days, the rain shield 22, the two mounting plates 2, and the baffle 21 are combined to form a box shape with an opening downward, which can form a comprehensive protection for several cooling holes 13 and prevent rainwater from entering the housing 1 through the plurality of cooling holes 13. The transformer body 11 is damaged, and there is a certain distance between the baffle plate 21 and the maintenance door 12 , and the plurality of cooling holes 13 can also dissipate heat to the transformer body 11 in rainy days.

The linkage device includes a transmission shaft 4 , a transmission belt 41 , a driving pulley 34 , a driven pulley 42 , a first bevel gear 44 , and a second bevel gear 43 . The transmission shaft 4 is arranged laterally above the housing 1 and is movably connected with the housing 1 through a support frame. The axis of the transmission shaft 4 is parallel to the axis of the central shaft 3 . The driving pulley 34 is sheathed on the central shaft 3 and fixedly connected with the central shaft 3 . The driven pulley 42 is sheathed on the transmission shaft 4 and is fixedly connected with the transmission shaft 4 . The transmission belt 41 is sheathed on the driving pulley 34 and the driven pulley 42 . The first bevel gear 44 is fixedly connected with the rotating shaft at one end of the winding roller 6 . The second bevel gear 43 is fixed on an end of the transmission shaft 4 close to the first bevel gear 44 and meshes with the first bevel gear 44 .

When the wind pushes the wind blades 31 to rotate, and the wind blades 31 drive the central shaft 3 to rotate, the central shaft 3 drives the driving pulley 34, the transmission belt 41 belt, and the driven pulley 42 to rotate, and the driven pulley 42 drives the transmission shaft 4 to rotate, and the transmission shaft 4 The winding roller 6 is driven to rotate by the first bevel gear 44 and the second bevel gear 43 , and the winding roller 6 winds a plurality of winding ropes 61 . When the transformer needs to be repaired, the staff will unlock the door lock, then turn and open the maintenance door 12, and the maintenance door 12 will drive the lifting device to move, so that the first bevel gear 44 and the second bevel gear 43 are separated. After the staff completes the maintenance, Close the maintenance door 12, make the first bevel gear 44 mesh with the second bevel gear 43, and then lock the door. During maintenance, the wind drive device is separated from the lifting device. At this time, the outside wind will not drive the baffle plate 21 to rise and fall through the wind force drive device, and the vibration of the housing 1 is small, thereby preventing the vibration and sound generated by the baffle plate 21 lifting. It has an impact on the maintenance process and facilitates maintenance.

The dust removal device includes a limit rod 32 and a vibrating plate 14 . The vibrating plate 14 is made of spring steel and is fixed on the top of the maintenance door 12 . The limiting rod 32 is in contact with the vibrating plate 14 .

When the wind direction is facing away from the cooling holes 13, the wind pushes the wind blades 31 to rotate in the opposite direction, and the wind blades 31 drive the central shaft 3 to rotate in the opposite direction for a certain angle, and the central shaft 3 drives the limit rod 32 to rotate until the limit rod 32 and the vibrating plate 14 Collision, the vibrating plate 14 vibrates, drives the maintenance door 12 to vibrate, and cleans up the dust in some cooling holes 13. By setting the limit rod 32 and the vibrating plate 14, it is possible to prevent the wind facing away from the heat dissipation hole 13 from driving the winding roller 6 to reversely rotate to wind up the winding rope 61, and to prevent the winding rope 61 from driving the winding rope 61 when the wind direction faces away from the heat dissipation hole 13. The baffle plate 21 rises to cover some heat dissipation holes 13 , affecting the heat dissipation effect of the heat dissipation holes 13 .

As shown in Figure 2, the dust removal device includes a locking device and a pushing device. The top surface of the casing 1 is provided with a second slideway, the second slideway is a T-shaped slideway, the second slideway is parallel to the axis of the central shaft 3, and a second slide block is slidably arranged in the second slideway. The locking device is used to lock the limiting rod 32. The locking device is outside the rotation range of the limiting rod 32. The locking device includes a moving block 5, which is arranged above the housing 1 and is fixedly connected with the second sliding block. The pushing device is arranged on the side of the moving block 5 away from the maintenance door 12 and is connected with the moving block 5 for pushing the locking device to move within the rotation range of the limit lever 32 when it rains.

When it rains, the pushing device starts, and the pushing device pushes the moving block 5 to move, so that the locking device moves into the rotation range of the stop bar 32. After the central shaft 3 drives the stop bar 32 to rotate forward for a certain angle, the stop bar 32 Locked by the locking device, the central shaft 3 is fixed, and the baffle 21 is fixed, so that the baffle 21 continuously blocks the cooling holes 13 to prevent rainwater from entering the housing 1 through the cooling holes 13 .

The locking device includes a locking lever 51 and a return spring 511 . A slide groove is arranged on the side of the moving block 5 close to the maintenance door 12 , and the slide groove is parallel to the central axis 3 . The locking rod 51 is slidably disposed in the sliding groove. One side of the locking rod 51 is a pushing surface, and the pushing surface is an inclined surface corresponding to the rotation direction of the limiting rod 32 . The return spring 511 is arranged in the slide groove and inside the locking rod 51 , and the two ends of the return spring 511 are respectively connected with the locking rod 51 and the moving block 5 .

When it rains, the pushing device is started, and the pushing device pushes the moving block 5 to move, so that the locking rod 51 is moved into the rotation range of the stop rod 32, and when the central shaft 3 drives the stop rod 32 to rotate a certain angle, 32 pushes the locking rod 51 into the sliding groove through the pushing surface, and then the locking rod 51 pops up under the action of the return spring 511 and joins with the stop rod 32 to prevent the stop rod 32 from rotating and prevent the central shaft 3 from reversing. The baffle plate 21 just joins with the rain shield 22, and the baffle plate 21 is fixed.

The pushing device includes a fixed block 54 , a water collecting bucket 52 , and a telescopic spring 53 . The fixed block 54 is arranged on the top of the casing 1 , on the side of the moving block 5 away from the maintenance door 12 , and the fixed block 54 is fixedly connected with the casing 1 . The telescopic spring 53 is arranged between the fixed block 54 and the moving block 5 , and its two ends are respectively connected with the fixed block 54 and the moving block 5 . The side of the moving block 5 close to the fixed block 54 is provided with a third slideway, the third slideway is arranged vertically, and the third slideway is provided with a third slideway. The water collecting bucket 52 is arranged above the telescopic spring 53, between the fixed block 54 and the moving block 5, the water collecting bucket 52 is fixedly connected with the third slide block, the outer surface of the water collecting bucket 52 is connected with the fixed block 54, and the The outer surface of the bucket 52 connected with the fixed block 54 is an inclined surface, which is used to collect rainwater and push the moving block 5 to move when it rains.

When it rains, the water collecting bucket 52 collects rainwater and the weight increases, squeezing the fixed block 54 and the moving block 5, so that the moving block 5 is away from the fixed block 54, and the moving block 5 drives the locking rod 51 to move within the rotation range of the stop rod 32. After the rain stopped, the weight of rainwater evaporation in the water collecting bucket 52 decreased, and the fixed block 54 and the moving block 5 approached each other under the action of the telescopic spring 53, and the moving block 5 drove the locking rod 51 to move away from the limit rod 32, so that the central axis 3 And the wind blade 31 can rotate with the wind direction again.

A working method of an energy-saving dry-type transformer. When it rains, the water collecting bucket 52 collects rainwater and the weight increases, squeezing the fixed block 54 and the moving block 5, so that the moving block 5 is far away from the fixed block 54, and the moving block 5 drives the locking rod 51 Into the range of rotation of the limit lever 32. After the rain stopped, the weight of rainwater evaporation in the water collecting bucket 52 decreased, and the fixed block 54 and the moving block 5 approached each other under the action of the telescopic spring 53 , and the moving block 5 drove the locking bar 51 to move away from the stop bar 32 .

By automatically locking the limit lever 32 when it rains, the baffle plate 21 can continuously block the rainwater and prevent the rainwater from entering the housing 1 through the cooling holes 13 , thereby damaging the transformer body 11 .

When the transformer needs to be repaired, the staff will unlock the door lock, then turn and open the maintenance door 12, and the maintenance door 12 will drive the lifting device to move, so that the first bevel gear 44 and the second bevel gear 43 are separated. After the staff completes the maintenance, Close the maintenance door 12, make the first bevel gear 44 mesh with the second bevel gear 43, and then lock the door.

During maintenance, the wind drive device is separated from the lifting device. At this time, the outside wind will not drive the baffle plate 21 to rise and fall through the wind force drive device, and the vibration of the housing 1 is small, thereby preventing the vibration and sound generated by the baffle plate 21 lifting. It has an impact on the maintenance process and facilitates maintenance.

The above-mentioned embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without paying creative work all belong to the protection of the present invention. range.

Claims (10)

1. An energy-saving dry-type transformer, characterized in that it comprises a housing (1), a transformer body (11), some cooling holes (13), and a dust removal device; the side of the housing (1) is provided with maintenance A door (12), one side of the maintenance door (12) is rotatably connected to the housing (1), the rotation axis of the maintenance door (12) is set vertically, and the maintenance door (12) rotates away from it One side of the axis is provided with a door lock; the transformer body (11) is provided in the housing (1); a number of the cooling holes (13) are dispersedly provided on the maintenance door (12), and the The housing (1) is internally connected; the dust removal device includes a wind drive device, a lifting device, a baffle (21), two mounting plates (2), and a brush (211); the two mounting plates (2) are fixed On the outer surface of the maintenance door (12), the two mounting plates (2) are vertically arranged on both sides of the cooling holes (13), and the opposite sides of the two mounting plates (2) The first slideway is arranged on the top, the first slideway is vertically arranged, and the first slide block is slidably arranged in the first slideway; the baffle plate (21) is vertically arranged on the two mounting plates ( 2), and under several of the cooling holes (13), the baffle plate (21) is fixedly connected with the two first sliders; the lifting device is arranged on the top of the casing (1) , and connected with the baffle (21), used to drive the baffle (21) up to cover some of the cooling holes (13); the wind drive device includes a number of wind blades (31), a central shaft ( 3), fixed pile (33), linkage device; the fixed pile (33) is vertically fixed on the top of the housing (1); the central axis (3) runs through the fixed pile (33) transversely, and Vigorously connected with the fixed pile (33) through a bearing, the axial direction of the central shaft (3) is perpendicular to the maintenance door (12); several wind blades (31) are arranged around the central shaft (3) , and is fixedly connected with the central shaft (3); the linkage device is respectively connected with the central shaft (3) and the lifting device, and is used to drive the lifting device by wind. 2. An energy-saving dry-type transformer according to claim 1, characterized in that: the lifting device includes a winding roller (6) and several winding ropes (61); the winding roller (6) is horizontally It is arranged above the casing (1), and is flexibly connected to the maintenance door (12) through a support frame; several winding ropes (61) are vertically arranged on the side of the maintenance door (12), in Between the two installation plates (2), several said winding ropes (61) are evenly spaced and arranged, the lower end of said winding rope (61) is connected with the top of said baffle plate (21), and the upper end is connected with said retracting rope (61). Roller (6) is connected, and described take-up rope (61) is taut state. 3. An energy-saving dry-type transformer according to claim 2, characterized in that: a rain shield (22) is fixedly arranged on the outer surface of the maintenance door (12), and the rain shield (22) is inclined It is arranged above several of the cooling holes (13) and connected to the upper parts of the two mounting plates (2); several of the winding ropes (61) run through the rain shielding plate (22); the The top of the baffle (21) is provided with a rubber layer. 4. An energy-saving dry-type transformer according to claim 2, characterized in that: the linkage device includes a transmission shaft (4), a transmission belt (41), a driving pulley (34), a driven pulley (42) , the first bevel gear (44), the second bevel gear (43); the transmission shaft (4) is arranged laterally above the housing (1), and is movably connected with the housing (1) through a support frame , the axis of the transmission shaft (4) is parallel to the axis of the central shaft (3), and the transmission shaft (4) is on the side away from the rotating shaft of the maintenance door (12); the driving pulley (34 ) is sleeved on the central shaft (3), and is fixedly connected with the central shaft (3); the driven pulley (42) is sleeved on the transmission shaft (4), and is connected with the transmission The shaft (4) is fixedly connected; the transmission belt (41) is sleeved on the driving pulley (34) and the driven pulley (42); the first bevel gear (44) and the winding roller One end rotating shaft of (6) is fixedly connected; Described second bevel gear (43) is fixed on described transmission shaft (4) near one end of described first bevel gear (44), and with described first bevel gear (44) ) to engage. 5. An energy-saving dry-type transformer according to claim 1, characterized in that: the dust removal device includes a limit rod (32) and a vibrating plate (14); the vibrating plate (14) is made of spring steel , fixed on the top of the maintenance door (12); the limit rod (32) is connected to the vibrating plate (14). 6. An energy-saving dry-type transformer according to claim 5, characterized in that: the dust removal device includes a locking device and a pushing device; a second slideway is provided on the top surface of the housing (1), so that The second slideway is a T-shaped slideway, the second slideway is parallel to the axis of the central shaft (3), and a second slide block is slidably arranged in the second slideway; the locking device is used for The limiting rod (32) is locked, the locking device is outside the rotation range of the limiting rod (32), the locking device includes a moving block (5), and the moving block (5) is arranged on the above the casing (1), and is fixedly connected with the second slider; the pushing device is arranged on the side of the moving block (5) away from the maintenance door (12), and (5) connection, used for pushing the locking device to move to within the rotation range of the limit lever (32) when it rains. 7. An energy-saving dry-type transformer according to claim 6, characterized in that: the locking device includes a locking lever (51) and a return spring (511); the moving block (5) is close to the maintenance door (12) is provided with a sliding groove on the side, and the sliding groove is parallel to the central axis (3); the locking rod (51) is slidably arranged in the sliding groove, and one of the locking rods (51) The side surface is a pushing surface, and the pushing surface is an inclined surface, corresponding to the rotation direction of the limit lever (32); 51), the two ends of the return spring (511) are respectively connected with the locking rod (51) and the moving block (5). 8. An energy-saving dry-type transformer according to claim 6, characterized in that: the pushing device includes a fixed block (54), a water collection bucket (52), and a telescopic spring (53); the fixed block ( 54) set on the top of the housing (1), on the side of the moving block (5) away from the maintenance door (12), the fixed block (54) is fixedly connected to the housing (1) The telescopic spring (53) is arranged between the fixed block (54) and the moving block (5), and its two ends are respectively connected with the fixed block (54) and the moving block (5); The side of the moving block (5) close to the fixed block (54) is provided with a third slideway, the third slideway is arranged vertically, and the third slideway is provided with a third slideway; The water collecting bucket (52) is arranged above the telescopic spring (53), between the fixed block (54) and the moving block (5), and the water collecting bucket (52) is connected to the third slide Blocks are fixedly connected, the outer surface of the water collecting bucket (52) is connected with the fixed block (54), and the outer surface of the water collecting bucket (52) connected with the fixed block (54) is inclined The surface is used to collect rainwater and push the moving block (5) to move when it rains. 9. A working method for an energy-saving dry-type transformer according to any one of claims 1-8, characterized in that: when it rains, the water collecting bucket (52) collects rainwater and the weight increases, squeezing the fixed block (54 ) and the moving block (5), making the moving block (5) away from the fixed block (54), and the moving block (5) drives the locking bar (51) into the rotation range of the stop bar (32); after the rain stops, the set The evaporation weight of the rainwater in the bucket (52) is reduced, the fixed block (54) and the moving block (5) approach each other under the action of the telescopic spring (53), and the moving block (5) drives the locking rod (51) to move away from the limit rod (32). 10. The working method of an energy-saving dry-type transformer according to claim 9, characterized in that: when the transformer needs to be maintained, the staff unlocks the door lock, and then turns to open the maintenance door (12), and the maintenance door ( 12) Drive the lifting device to move, so that the first bevel gear (44) and the second bevel gear (43) are separated. When the staff completes the maintenance, close the maintenance door (12), and the first bevel gear (44) and the second The bevel gear (43) engages, and then the door lock is locked.