Air-cooled dry-type transformer

Abstract

The invention relates to the technical field of dry-type transformers, in particular to an air-cooled dry-type transformer which comprises a shell, a transformer body and a fan, the fan is provided with an air inlet and an air outlet, the shell is provided with an air inlet and an air outlet, the air inlet is communicated with the air inlet, a mounting cavity is formed in the shell, a mounting frame is mounted on the shell, and the air inlet is communicated with the air outlet. A dehumidification cavity and an overturning assembly are arranged in the mounting frame, a regeneration assembly is arranged on the shell, a regeneration cavity is formed in the regeneration assembly, drying agents are arranged in the dehumidification cavity and the regeneration cavity, and the air inlet and the air outlet communicate with the dehumidification cavity and the regeneration cavity correspondingly. The overturning assembly is driven to overturn through resistance generated by the dehumidification cavity to the air inlet, so that the dehumidification cavity and the regeneration cavity are switched to the air outlet and the air inlet correspondingly, a drying agent in the dehumidification cavity is regenerated through the regeneration assembly, and the dehumidification effect and equipment safety of the air-cooled dry-type transformer are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of dry-type transformers, in particular to an air-cooled dry-type transformer. Background Art

[0002] An air-cooled dry-type transformer is a specially designed power transformer. Its main feature is that it does not use traditional liquid coolants (such as oil), but relies on natural wind or fans to force cooling of the internal components of the transformer. Unlike traditional oil-immersed transformers, the insulation material of air-cooled dry-type transformers is usually dry solid insulating material, such as epoxy resin or polyester resin. This design avoids the environmental pollution and safety risks that may occur in oil-immersed transformers. Since liquid coolants are not required, air-cooled dry-type transformers are widely used in some special environments, such as urban areas, chemical plants, offshore platforms, etc. However, when existing air-cooled dry-type transformers are used in some high-humidity environments, particulate matter and moisture in the air may accumulate on the surface of the equipment to form dirt, affecting the heat dissipation effect of the air-cooled dry-type transformer, and moisture and salt may increase the conductivity of the surface of the equipment, increasing the risk of failure of electrical equipment due to arcing or other reasons.

[0003] In response to the above problems, the prior art has proposed some solutions. For example, Chinese patent application number: CN202220673677.1 discloses a dry-type transformer with moisture-proof and dehumidification function. This solution installs a drying box in a protective shell. When dissipating heat, the air passes through the gaps of the desiccant inside the drying box and is discharged to the protective shell from other sides, thereby realizing the heat dissipation of the electrical components inside the protective shell. At the same time, the desiccant inside the drying box will adsorb the moisture passing through the air, thereby preventing moisture from entering, thereby ensuring the safety and stability of the equipment. However, in the above solution, the desiccant will become saturated after long-term use, resulting in a decrease in the dehumidification effect. In order to achieve a stable dehumidification effect of the equipment, the desiccant needs to be replaced regularly, and when used in a high humidity environment such as an offshore platform, the frequency of replacing the desiccant will increase. If the desiccant is not replaced in time, a large amount of water vapor will enter the equipment, thereby increasing the problem of equipment failure.

[0004] Therefore, the desiccant becomes saturated after long-term use, resulting in a decrease in dehumidification effect. In order to achieve a stable dehumidification effect of the equipment, the desiccant needs to be replaced regularly. When used in high humidity environments such as offshore platforms, the frequency of replacing the desiccant will increase. If the desiccant is not replaced in time, a large amount of water vapor will enter the equipment, thereby increasing the problem of equipment failure. An air-cooled dry-type transformer is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an air-cooled dry-type transformer to solve the problem that the desiccant becomes saturated after long-term use, resulting in a decrease in dehumidification effect. In order to achieve a stable dehumidification effect of the equipment, the desiccant needs to be replaced regularly. When used in a high humidity environment such as an offshore platform, the frequency of replacing the desiccant will increase. If the desiccant is not replaced in time, a large amount of water vapor will enter the interior of the equipment, thereby increasing the problem of equipment failure.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A wind-cooled dry-type transformer comprises a shell, a transformer body and a fan, wherein the transformer body and the fan are installed in the shell, the fan is installed on the lower side of the transformer body, an air inlet and an air outlet are arranged on the fan, an air inlet and an air outlet are opened on the shell, the air inlet is communicated with the air inlet, the air outlet points to the outer surface of the transformer body, an installation cavity is arranged in the shell, a mounting frame is installed on the shell, a dehumidification cavity and a flip assembly are arranged in the mounting frame, a regeneration assembly is arranged on the shell, a regeneration cavity is arranged in the regeneration assembly, a dehumidification cavity and a regeneration cavity are both provided with a desiccant, the air inlet and the air outlet are respectively communicated with the dehumidification cavity and the regeneration cavity, and a dehumidification cavity and a regeneration cavity are also arranged on the air inlet and the air outlet. A filter is installed. When the air pressure between the dehumidification chamber and the air inlet reaches a set value, the flip assembly drives the dehumidification chamber and the regeneration chamber to flip through the air pressure, so that the dehumidification chamber and the regeneration chamber are switched to the air outlet and the air inlet respectively, and the desiccant in the dehumidification chamber is regenerated through the regeneration assembly, thereby avoiding the desiccant from becoming saturated after long-term use, resulting in a decrease in the dehumidification effect. In order to achieve a stable dehumidification effect of the equipment, the desiccant needs to be replaced regularly, and when used in a high humidity environment such as an offshore platform, the frequency of replacing the desiccant will increase. If the desiccant is not replaced in time, a large amount of water vapor will enter the equipment, thereby increasing the problem of equipment failure, thereby ensuring the dehumidification effect and equipment safety of the air-cooled dry-type transformer.

[0008] Optionally, the flipping component can be an electric motor, a pneumatic cylinder or a hydraulic cylinder. All of the above three flipping components can flip the dehumidification bin and the regeneration bin. The electric motor converts electrical energy into mechanical energy to drive the mechanical device to achieve the flipping action, but the electric motor requires a power supply and has high requirements for the control circuit, and sometimes an additional mechanical device is required to achieve flipping; the pneumatic cylinder uses the power generated by compressed air to drive the piston movement, and realizes the flipping of the object through a mechanical connection, but the pneumatic cylinder requires air compression equipment, and the movement speed is slower than that of the electric motor, and cannot provide precise position control; the hydraulic cylinder uses the pressure of a liquid (usually oil) to drive the piston movement, and realizes the flipping of the object through a mechanical device, but the hydraulic cylinder requires support from a hydraulic system, the system is highly complex, and the maintenance cost is high; therefore, the above three flipping components are not preferred solutions of the present invention.

[0009] Preferably, the flip assembly comprises a turntable, a first slide, a second slide and a return spring, the mounting frame is provided with a mounting groove, the turntable is slidably connected in the mounting groove, the turntable is provided with a dehumidification chamber and a regeneration chamber, the dehumidification chamber and the regeneration chamber are respectively arranged in the dehumidification chamber and the regeneration chamber, the first slide is coaxially mounted on the end face of the turntable close to the shell, the second slide is coaxially mounted on the inner wall of the mounting groove, the first slide and the second slide are processed into two oblique angled rings, and the installation directions of the first slide and the second slide are opposite, and are installed relative to each other at two oblique angles, the return spring sleeve is arranged in the first slide and the second slide, two ends of the return spring are respectively connected to the turntable and the shell, the dehumidification chamber and the regeneration chamber are both slidably connected with connecting sleeves, and a plurality of the connecting sleeves are slidably connected to the shell on one side close to the shell, thereby avoiding the problem that the desiccant cannot be replaced in time after long-term use, resulting in a decrease in the dehumidification effect, and ensuring the dehumidification effect of the air-cooled dry-type transformer.

[0010] Optionally, the regeneration component includes a heating element, chemical regeneration and vacuum regeneration. All three components can be regenerated by the desiccant. The temperature around the desiccant is increased by a heating element (such as a heating wire or a heating plate), thereby forcing it to release the absorbed moisture. However, the heating element may consume more electrical energy. During the heating process, care must be taken to control the temperature to avoid damaging the desiccant. Chemical regeneration utilizes a specific chemical reaction to release the moisture absorbed in the desiccant. Common methods include using high-concentration solvents or chemicals to extract moisture. However, chemical regeneration may require the use of chemicals, and the operation and handling process are relatively complicated, requiring safety precautions. Vacuum regeneration places the desiccant in a vacuum environment and uses the temperature increase under low pressure to cause the moisture adsorbed in the desiccant to evaporate and release. However, the vacuum regeneration equipment is costly, the vacuum system has strict requirements, and the operation is relatively complex. Therefore, the three regeneration components mentioned above are not preferred solutions of the present invention.

[0011] Preferably, the regeneration component includes an air collecting port and an air collecting channel, the air collecting port is arranged on the upper side of the transformer body, and the two ends of the air collecting channel are respectively connected to the air collecting port and the air outlet, thereby avoiding the desiccant from becoming saturated after long-term use and causing the dehumidification effect to decrease. In order to achieve a stable dehumidification effect for the equipment, the desiccant needs to be replaced regularly, thereby increasing manpower and material costs and reducing the cost expenditure of the air-cooled dry-type transformer.

[0012] Preferably, the gases at the air inlet and the air outlet all flow through the mounting frame, and the air inlet is located on the upper side of the air outlet, thereby avoiding the problem that the desiccant in the dehumidification chamber cannot be quickly flipped after being saturated, resulting in a decrease in the dehumidification effect of the air-cooled dry-type transformer, and ensuring the flipping speed of the air-cooled dry-type transformer, thereby ensuring the dehumidification effect of the air-cooled dry-type transformer.

[0013] Preferably, the dehumidification chamber and the regeneration chamber are both arranged in a semi-arc shape, and the width of the dehumidification chamber and the regeneration chamber is equal to the diameter of the air inlet and the air outlet, thereby avoiding the problem that the dehumidification chamber and the regeneration chamber deviate from the air inlet and the air outlet when the turntable is reversed, thereby causing the dehumidification effect and the regeneration effect of the equipment to decrease, thereby ensuring the dehumidification effect and the regeneration effect of the air-cooled dry-type transformer.

[0014] Preferably, a guide groove is provided on the front inner wall of the mounting groove, and a guide block is installed on the front end surface of the turntable, and the front end of the guide block is slidably connected in the guide groove, thereby avoiding the problem that the lowest point of the bevel angle of the No. 1 slide and the No. 2 slide cannot smoothly transition to the highest point when the turntable is flipped, resulting in the turntable reversal jamming, thereby ensuring the stability of the air-cooled dry-type transformer.

[0015] Preferably, a plurality of limit grooves are further provided in the guide groove, and the plurality of limit grooves are respectively located on both sides of the guide groove, and the plurality of limit grooves are connected to the guide groove at one end close to the guide groove, and the plurality of limit grooves are slidably connected to the limit blocks, and the limit blocks are sleeved with limit spring sheets, and the two ends of the limit spring sheets are respectively in contact with the limit blocks and the mounting frame, thereby avoiding the problem of vibration of the turntable due to the wind force of the air inlet and the air outlet when the turntable does not meet the flipping conditions, thereby ensuring the stability of the air-cooled dry-type transformer.

[0016] Preferably, a buffer block is installed on the end of the guide block away from the disc, and a buffer pad is also provided between the buffer block and the guide block, so as to avoid the problem that the rebound force after the turntable is flipped over causes damage to the mounting frame, resulting in a decrease in the service life of the mounting frame, thereby ensuring the service life of the air-cooled dry-type transformer.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a flip assembly and a regeneration assembly in the shell. When the air pressure between the dehumidification chamber and the air inlet reaches a set value, the flip assembly drives the dehumidification chamber and the regeneration chamber to flip through the air pressure, so that the dehumidification chamber and the regeneration chamber are respectively switched to the air outlet and the air inlet, and the desiccant in the dehumidification chamber is regenerated through the regeneration assembly, thereby avoiding the frequency of replacing the desiccant when used in a high humidity environment such as an offshore platform. Failure to replace the desiccant in time will cause a large amount of water vapor to enter the interior of the equipment, thereby increasing the problem of equipment failure, thereby ensuring the dehumidification effect and equipment safety of the air-cooled dry-type transformer.

[0019] 2. The present invention arranges the dehumidification chamber and the regeneration chamber into a semi-arc shape. Since the length of the arc is equal to half of the circumference of the installation groove, and the width of the dehumidification chamber and the regeneration chamber is equal to the diameter of the air inlet and the air outlet, the dehumidification chamber and the regeneration chamber always cover the air inlet and the air outlet when the turntable is reversed, thereby avoiding the problem that the dehumidification chamber and the regeneration chamber deviate from the air inlet and the air outlet when the turntable is reversed, thereby reducing the dehumidification effect and regeneration effect of the equipment, thereby ensuring the dehumidification effect and regeneration effect of the air-cooled dry-type transformer.

[0020] 3. The present invention further provides a plurality of limit grooves in the guide groove, wherein the plurality of limit grooves are respectively located on both sides of the guide groove, and the plurality of limit grooves are connected to the guide groove at one end close to the guide groove, and the plurality of limit grooves are slidably connected to limit blocks, and the limit blocks are sleeved with limit springs, and the two ends of the limit springs are respectively in contact with the limit blocks and the mounting frame, thereby avoiding the problem of vibration of the turntable due to the wind force of the air inlet and the air outlet when the turntable does not reach the turning condition, thereby ensuring the stability of the air-cooled dry-type transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the air-cooled dry-type transformer of the present invention;

[0022] Figure 2 It is a forward exploded view of the air-cooled dry-type transformer of the present invention;

[0023] Figure 3 It is a reverse explosion diagram of the air-cooled dry-type transformer of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the first slide and the second slide in the air-cooled dry-type transformer of the present invention;

[0025] Figure 5 For the present invention Figure 1 Sectional view at AA in the middle;

[0026] Figure 6 It is a schematic diagram of the structure of the mounting frame and the rotating disk in the air-cooled dry-type transformer of the present invention;

[0027] Figure 7 For the present invention Figure 6 Sectional view at the middle BB;

[0028] Figure 8 It is a schematic diagram of the structure after the limiting block in the air-cooled dry-type transformer of the present invention limits the guide block.

[0029] In the figure: 1. shell; 2. transformer body; 3. fan; 401. air inlet; 402. air outlet; 403. air inlet; 404. air outlet; 405. installation cavity; 406. installation frame; 407. dehumidification cavity; 408. regeneration cavity; 409. desiccant; 410. filter; 501. turntable; 502. slide No. 1; 503. slide No. 2; 505. return spring; 506. installation slot; 507. dehumidification chamber; 508. regeneration chamber; 509. connecting sleeve; 601. air collecting port; 602. air collecting channel; 603. guide groove; 604. guide block; 701. limit groove; 702. limit block; 703. limit spring; 801. buffer block; 802. buffer pad. DETAILED DESCRIPTION

[0030] See also Figures 1 to 8 The present invention provides an air-cooled dry-type transformer, and the technical solution is as follows:

[0031] A wind-cooled dry-type transformer comprises a shell 1, a transformer body 2, a fan 3, a detection system and a control system. The transformer body 2 and the fan 3 are installed in the shell 1, the fan 3 is installed on the lower side of the transformer body 2, an air inlet 403 and an air outlet 404 are arranged on the fan 3, an air inlet 401 and an air outlet 402 are opened on the shell 1, the air inlet 403 is communicated with the air inlet 401, and the air outlet 404 points to the outer surface of the transformer body 2, the detection system and the control system are all installed in the shell 1, and the detection system, the control system and the fan 3 are connected through telecommunication, an installation cavity 405 is arranged in the shell 1, a mounting frame 406 is installed on the shell 1, a dehumidification cavity 407 and a flip assembly are arranged in the mounting frame 406, a regeneration assembly is arranged on the shell 1, a regeneration cavity 408 is arranged in the regeneration assembly, a dehumidification cavity 407 and a regeneration cavity 408 are both provided with a desiccant 409, and a dry The material used for the desiccant 409 is silica gel. The silica gel desiccant 409 can absorb moisture in the air, and its moisture absorption capacity is stronger than other moisture absorbers. At the same time, the chemical properties of silica gel itself are stable and will not react chemically with the absorbed moisture. Therefore, it can be used stably for a long time in different applications, and the silica gel desiccant 409 can be used multiple times through regeneration treatment; the air inlet 401 and the air outlet 402 are respectively connected to the dehumidification chamber 407 and the regeneration chamber 408, and the air inlet 401 and the air outlet 402 are also installed with a filter 410. It is worth noting that the air inlet 401 is located on the upper side of the air outlet 402. When the air-cooled dry-type transformer is working, the detection system detects the air-cooled dry-type transformer in real time. When the internal temperature of the air-cooled dry-type transformer reaches the set value, the detection system transmits the detection signal to the control system, and controls the fan 3 to start through the control system.

[0032] See also Figures 1 to 4 and Figure 6The flip assembly includes a turntable 501, a first slide 502, a second slide 503 and a return spring 505. The mounting frame 406 is provided with a mounting groove 506. The turntable 501 is slidably connected in the mounting groove 506. The turntable 501 is provided with a dehumidification chamber 507 and a regeneration chamber 508. The dehumidification chamber 407 and the regeneration chamber 408 are respectively arranged in the dehumidification chamber 507 and the regeneration chamber 508. The first slide 502 is coaxially mounted on the end surface of the turntable 501 close to the shell 1. The second slide 503 is coaxially installed on the inner wall of the installation groove 506, the first slide 502 and the second slide 503 are processed into two oblique rings, and the installation directions of the first slide 502 and the second slide 503 are opposite, and they are installed at two oblique angles. The return spring 505 is set in the first slide 502 and the second slide 503, and the two ends of the return spring 505 are respectively connected to the turntable 501 and the shell 1, and the dehumidification chamber 507 and the regeneration chamber 508 are slidably connected with the connecting sleeve 509. The connecting sleeve 509 is slidably connected to the shell 1 at one side close to the shell 1. Water vapor in the air enters through the air inlet 401 and adheres to the desiccant 409 in the dehumidification chamber 407. When the water vapor adsorbed by the dehumidification chamber 407 reaches saturation, the desiccant 409 in the dehumidification chamber 407 will expand. At this time, the density in the dehumidification chamber 407 will increase, so that the air flowing through the dehumidification chamber 407 is blocked. The pressure will be applied to the dehumidification chamber 507 and the turntable 501. When the turntable 501 is When the pressure in the direction of the shell 1 is applied, the first slide 502 will slide on the second slide 503 and rotate in the direction of the shell 1 through the bevels on the first slide 502 and the second slide 503. When the dehumidification chamber 407 and the regeneration chamber 408 are respectively switched to the air outlet 402 and the air inlet 401, the flip assembly completes the flipping action, thereby avoiding the problem that the desiccant cannot be replaced in time after long-term use, resulting in a decrease in the dehumidification effect, and ensuring the dehumidification effect of the air-cooled dry-type transformer.

[0033] It is worth noting that the dehumidification chamber 407 and the regeneration chamber 408 are both arranged in a semi-arc shape, and the length of the arc is equal to half of the circumference of the mounting groove 506. The width of the dehumidification chamber 407 and the regeneration chamber 408 is equal to the diameter of the air inlet 401 and the air outlet 402. A guide groove 603 is provided on the front inner wall of the mounting groove 506. A guide block 604 is installed on the front end surface of the turntable 501. The front end of the guide block 604 is slidably connected in the guide groove 603. When the water vapor adsorbed by the dehumidification chamber 407 reaches saturation, at this time, since the dehumidification chamber 407 is located above the regeneration chamber 408, On the other hand, the weight of the desiccant 409 in the dehumidification chamber 407 will be greater than that of the desiccant 409 in the regeneration chamber 408. During the flipping of the turntable 501, the weight difference between the dehumidification chamber 407 and the regeneration chamber 408 will also be applied to the turntable 501, so that the rotational force and rotation speed of the turntable 501 become larger, thereby avoiding the problem that the dehumidification chamber 407 and the regeneration chamber 408 deviate from the air inlet 401 and the air outlet 402 when the turntable 501 is reversed, thereby reducing the dehumidification effect and regeneration effect of the equipment, thereby ensuring the dehumidification effect and regeneration effect of the air-cooled dry-type transformer.

[0034] It is also worth noting that a plurality of limit grooves 701 are provided in the guide groove 603, and the plurality of limit grooves 701 are respectively located on both sides of the guide groove 603, and the ends of the plurality of limit grooves 701 close to the guide groove 603 are all connected to the guide groove 603, and the plurality of limit grooves 701 are all slidably connected to the limit blocks 702, and the limit blocks 702 are sleeved with limit springs 703, and the two ends of the limit springs 703 are respectively in contact with the limit blocks 702 and the mounting frame 406, and a buffer block 801 is installed on the end of the guide block 604 away from the disc, and a buffer pad 802 is also provided between the buffer block 801 and the guide block 604, so as to avoid the problem that the lowest point of the bevel angle of the No. 1 slide 502 and the No. 2 slide 503 cannot smoothly transition to the highest point when the turntable 501 is flipped, resulting in the problem of the turntable 501 reversing and jamming, thereby ensuring the stability of the air-cooled dry-type transformer.

[0035] The regeneration component includes an air collecting port 601 and an air collecting channel 602. The air collecting port 601 is arranged on the upper side of the transformer body 2, and the air collecting channel 602 is arranged between the air collecting port 601 and the air outlet 402. When the gas in the installation cavity 405 is discharged, since the air collecting port 601 is arranged on the upper side of the transformer body 2, the hot air on the upper side of the transformer body will be discharged out of the installation cavity 405 first. During the discharge process, the hot air will heat the desiccant 409 in the regeneration cavity 408. At this time, the moisture in the desiccant 409 will evaporate due to the heat and be discharged out of the installation cavity 405 along with the hot air, thereby avoiding the desiccant becoming saturated after long-term use, resulting in a decrease in the dehumidification effect. In order to achieve a stable dehumidification effect of the equipment, the desiccant 409 needs to be replaced regularly, thereby increasing the problem of manpower and material costs and reducing the cost expenditure of the air-cooled dry transformer.

[0036] While working, see Figures 1 to 8When the air-cooled dry-type transformer is working, the detection system detects the air-cooled dry-type transformer in real time. When the internal temperature of the air-cooled dry-type transformer reaches the set value, the detection system transmits the detection signal to the control system, and controls the fan 3 to start through the control system. At this time, the air inlet 401 will generate suction, and the air passes through the filter 410 to enter the dehumidification chamber 407. At this time, the air will contact the desiccant 409 in the dehumidification chamber 407, and the water vapor in the air will be adsorbed by the desiccant 409. The dry air after circulating through the dehumidification chamber 407 will enter the fan 3 through the air inlet 403, and the dry air will be driven by the fan 3 to be blown out from the air outlet 404. At this time, the air at the air outlet 404 will contact the outer surface of the transformer body 2. During the process, the heat on the transformer body 2 will be taken away, so as to achieve the effect of heat dissipation. After the air-cooled dry-type transformer has been working for a long time, the desiccant 409 in the dehumidification chamber 407 continuously absorbs water vapor. When the water vapor absorbed by the desiccant 409 in the dehumidification chamber 407 reaches saturation, the desiccant 409 in the dehumidification chamber 407 will expand. At this time, the density in the dehumidification chamber 407 will increase, so that the air flowing through the dehumidification chamber 407 is blocked, and the gas pressure will be applied to the dehumidification chamber 507 and the turntable 501. At this time, the first slide 502 will slide on the second slide 503, and rotate toward the shell 1 through the oblique angles on the first slide 502 and the second slide 503. When the turntable 501 and the mounting frame 406 rotate relatively, the turntable 5 01 drives the dehumidification chamber 407 and the regeneration chamber 408 to rotate. At this time, since the dehumidification chamber 407 and the regeneration chamber 408 are both arranged in a semi-arc shape, and the length of the arc is equal to half of the circumference of the mounting groove 506, and the width of the arc is equal to the diameter of the air inlet 401 and the air outlet 402, it is avoided that the dehumidification chamber 407 and the regeneration chamber 408 deviate from the air inlet 401 and the air outlet 402 when the turntable 501 is reversed, thereby reducing the dehumidification effect and regeneration effect of the equipment. When the dehumidification chamber 407 and the regeneration chamber 408 are respectively switched to the air outlet 402 and the air inlet 401, the desiccant 409 in the cavity on the front side of the air inlet 401 will be in a dry state, and the desiccant 409 in the cavity on the front side of the air outlet 402 will be in a saturated state. The air in the air port 401 will lose resistance, and the turntable 501 will be driven by the pressure of the return spring 505 to move away from the shell 1. At the same time, since the desiccant 409 in the cavity in the direction of the air outlet 402 is in a saturated state, the air in the air outlet 402 will be blocked. At this time, the air pressure in the air outlet 402 will increase and be applied to the turntable 501, and together with the return spring 505, it will push the turntable 501 to move away from the shell 1. When the turntable 501 is about to contact the front inner wall of the installation groove 506, the buffer block 801 will contact the guide groove 603. At this time, the pressure between the turntable 501 and the front inner wall of the installation groove 506 will be buffered by the shock-absorbing pad, thereby preventing the rebound force after the turntable 501 is turned over from damaging the mounting frame 406.The problem that the service life of the mounting frame 406 is reduced ensures the service life of the air-cooled dry-type transformer.

[0037] Furthermore, the guide block 604 is driven by the pressure on the turntable 501 to slide into the guide groove 603. At this time, the buffer block 801 will contact the limit block 702 and push the limit block 702 to move to both sides of the guide groove 603. At this time, the limit spring sheet 703 is compressed and contracts. When the turntable 501 is completely in contact with the front inner wall of the installation groove 506, the limit block 702 will apply the pressure of the limit spring sheet 703 to the guide block 604 and limit the movement of the guide block 604, thereby preventing the turntable 501 from being turned over due to the wind force of the air inlet 401 and the air outlet 402 when the turntable 501 does not reach the turning condition. 01 vibration problem, ensuring the stability of the air-cooled dry-type transformer; in this process, the gas in the installation cavity 405 is discharged to the outside of the installation cavity 405 through the air outlet 402. During the discharge of the gas in the installation cavity 405, since the air collecting port 601 is arranged on the upper side of the transformer body 2, the hot air on the upper side of the transformer body will be discharged out of the installation cavity 405 first, and the hot air will heat the desiccant 409 in the regeneration cavity 408. At this time, the moisture in the desiccant 409 will evaporate due to the heat and be discharged out of the installation cavity 405 along with the hot air, thereby completing the regeneration of the desiccant 409.

[0038] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. An air-cooled dry-type transformer, comprising a housing (1), a transformer body (2) and a fan (3), wherein the transformer body (2) and the fan (3) are installed in the housing (1), the fan (3) is installed on the lower side of the transformer body (2), the fan (3) is provided with an air inlet (403) and an air outlet (404), the housing (1) is provided with an air inlet (401) and an air outlet (402), the air inlet (403) is connected to the air inlet (401), and the air outlet (404) points to the outer surface of the transformer body (2), characterized in that: The shell (1) is provided with a mounting chamber (405), a mounting frame (406) is mounted on the shell (1), a dehumidification chamber (407) and a turnover assembly are arranged in the mounting frame (406), a regeneration assembly is arranged on the shell (1), a regeneration chamber (408) is arranged in the regeneration assembly, a dehumidification chamber (407) and a regeneration chamber (408) are both provided with a desiccant (409), and the air inlet (401) and the air outlet (402) are respectively connected to the dehumidification chamber (407) and the regeneration chamber (408). A filter screen (410) is also installed on the air inlet (401) and the air outlet (402). When the air pressure between the dehumidification chamber (407) and the air inlet (401) reaches a set value, the flip component drives the dehumidification chamber (407) and the regeneration chamber (408) to flip through the air pressure, so that the dehumidification chamber (407) and the regeneration chamber (408) are switched to the air outlet (402) and the air inlet (401) respectively, and the desiccant (409) in the dehumidification chamber (407) is regenerated through the regeneration component.

2. An air-cooled dry-type transformer according to claim 1, characterized in that: The flip assembly comprises a turntable (501), a first slide (502), a second slide (503) and a return spring (505); a mounting groove (506) is provided on the mounting frame (406); the turntable (501) is slidably connected in the mounting groove (506); a dehumidification chamber (507) and a regeneration chamber (508) are provided on the turntable (501); the dehumidification chamber (407) and the regeneration chamber (408) are respectively arranged in the dehumidification chamber (507) and the regeneration chamber (508); the first slide (502) is coaxially mounted on the end surface of the turntable (501) close to the shell (1); the second slide (503) is coaxially mounted on the mounting frame (406) On the inner wall of the groove (506), the No. 1 slide (502) and the No. 2 slide (503) are processed into two oblique circular rings, and the installation directions of the No. 1 slide (502) and the No. 2 slide (503) are opposite, and they are installed relative to each other at two oblique angles. The return spring (505) is sleeved in the No. 1 slide (502) and the No. 2 slide (503), and the two ends of the return spring (505) are respectively connected to the turntable (501) and the shell (1). The dehumidification chamber (507) and the regeneration chamber (508) are both slidably connected with a connecting sleeve (509), and a plurality of the connecting sleeves (509) are slidably connected to the shell (1) on the side close to the shell (1).

3. An air-cooled dry-type transformer according to claim 2, characterized in that: The regeneration component comprises an air collecting port (601) and an air collecting channel (602), wherein the air collecting port (601) is arranged on the upper side of the transformer body (2), and the two ends of the air collecting channel (602) are respectively connected to the air collecting port (601) and the air outlet (402).

4. An air-cooled dry-type transformer according to claim 2, characterized in that: The gases from the air inlet (401) and the air outlet (402) all flow through the mounting frame (406), and the air inlet (401) is located on the upper side of the air outlet (402).

5. An air-cooled dry-type transformer according to claim 4, characterized in that: The dehumidification chamber (407) and the regeneration chamber (408) are both arranged in a semi-arc shape, and the width of the dehumidification chamber (407) and the regeneration chamber (408) is equal to the diameter of the air inlet (401) and the air outlet (402).

6. An air-cooled dry-type transformer according to claim 2, characterized in that: A guide groove (603) is provided on the front inner wall of the installation groove (506), and a guide block (604) is installed on the front end surface of the rotating disk (501), and the front end of the guide block (604) is slidably connected in the guide groove (603).

7. An air-cooled dry-type transformer according to claim 6, characterized in that: A plurality of limit grooves (701) are also provided in the guide groove (603), and the plurality of limit grooves (701) are respectively located on both sides of the guide groove (603), and the ends of the plurality of limit grooves (701) close to the guide groove (603) are all connected to the guide groove (603), and the plurality of limit grooves (701) are all slidably connected to the limit blocks (702), and the limit blocks (702) are sleeved with limit spring sheets (703), and the two ends of the limit spring sheets (703) are respectively in contact with the limit blocks (702) and the mounting frame (406).

8. An air-cooled dry-type transformer according to claim 7, characterized in that: A buffer block (801) is installed on one end of the guide block (604) away from the disc, and a buffer pad (802) is also provided between the buffer block (801) and the guide block (604).

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