A dry type transformer

Abstract

The present invention belongs to the technical field of transformer heat dissipation, and specifically is a dry-type transformer, comprising a storage part, a control mechanism, a heat exchange mechanism and a flow guide mechanism; the storage part comprises a accommodating cylinder and a accommodating box, the accommodating cylinder is used to provide storage space for winding coils, and the inner cavity of the accommodating box is connected to the inner cavity of the accommodating cylinder; the control mechanism comprises a mounting cylinder and a flow guide fan, the mounting cylinder is fixedly mounted on the outer wall of the accommodating box, and the flow guide fan is fixedly mounted on the inner cavity of the mounting cylinder; the heat exchange mechanism comprises a heat exchange plate and a control plate arranged at the bottom of the heat exchange plate, and the heat exchange plate is located on one side of the flow guide fan; the flow guide mechanism comprises a bearing plate and a toggle plate, the bearing plate is fixedly mounted on the inner wall of the accommodating box, the control plate is fixedly mounted on the inner wall of the bearing plate, and the hot end of the control plate extends to the bottom surface of the bearing plate, the toggle plate is located on the bottom surface of the bearing plate, and is used to toggle the coolant; the above-mentioned structural coordination can effectively improve the cooling effect, thereby improving the safety during use.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer heat dissipation, in particular to a dry-type transformer. Background Art

[0002] A dry-type transformer is a special transformer whose core and winding are not immersed in insulating oil, but are cooled by air convection and other means. It is flame-retardant, fire-proof, explosion-proof and environmentally friendly. It is safe and reliable to use, simple and convenient to install and maintain, and can penetrate deep into the load center. It consists of a primary coil and a secondary coil. An alternating current passes through the primary coil to generate an alternating magnetic field. The secondary coil surrounds the primary coil. When the current in the primary coil changes, an induced electromotive force will also be generated in the secondary coil, thereby generating a voltage in the secondary coil. The heat dissipation of dry-type transformers is divided into two types: natural air cooling and forced air cooling.

[0003] For example, the Chinese patent with publication number CN115424823A discloses a heat dissipation structure of a dry-type transformer, including a transformer body, a cooling output box, a drainage box 1, a drainage box 2 and a drainage box 3. A base is provided at the bottom of the transformer body and connected by rivets. The base is in an I-shaped shape. A rectangular support plate is provided on the top of the transformer body and connected by welding. A cooling output box is provided at the rear side of the transformer body. An inwardly concave and arc-shaped air outlet 1 is provided at the left end of the front side of the cooling output box. An inwardly concave and arc-shaped air outlet 2 is provided at the middle end of the front side of the cooling output box. An inwardly concave and arc-shaped air outlet 3 is provided at the right end of the front side of the cooling output box, which improves the adaptability of the forced air cooling heat dissipation structure to dry-type transformers of different sizes. Heat is drained while forced air cooling, thereby improving the heat rising and discharge speed of the dry-type transformer.

[0004] Although the above technology improves the heat rise and discharge rate of the dry-type transformer by forced air cooling and heat drainage, since the winding coil and the iron core are arranged inside the body, the staff found during use that when the fan blows air to the outer shell of the body, although the air flow rate near the outside of the outer shell is increased, the air outside the internal winding coil is not affected, which causes the winding coil to overheat and creates a safety hazard.

[0005] To this end, the present invention provides a dry-type transformer. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a dry-type transformer described in the present invention includes a storage part, a control mechanism, a heat exchange mechanism and a flow guide mechanism.

[0008] The storage part comprises a containing cylinder and a containing box. The containing cylinder is used to provide a storage space for the winding coil. The inner cavity of the containing box is communicated with the inner cavity of the containing cylinder.

[0009] The control mechanism comprises a mounting tube and a flow guide fan. The mounting tube is fixedly mounted on the outer wall of the accommodating box, and the flow guide fan is fixedly mounted in the inner cavity of the mounting tube.

[0010] The heat exchange mechanism comprises a heat exchange plate and a control plate arranged at the bottom of the heat exchange plate, and the heat exchange plate is located at one side of the guide fan.

[0011] The guide mechanism includes a bearing plate and a toggle plate. The bearing plate is fixedly mounted on the inner wall of the containing box. The control plate is fixedly mounted on the inner wall of the bearing plate. The hot end of the control plate extends to the bottom surface of the bearing plate. The toggle plate is located on the bottom surface of the bearing plate and is used to toggle the coolant.

[0012] Preferably, a control pump is fixedly mounted on the outer wall of the containing box, the output end of the control pump extends to the inner cavity of the containing box, a control motor is fixedly mounted on the outer wall of the containing box, the output shaft of the control motor extends to the inner wall of the containing box, and the outer wall of the toggle plate is fixedly connected to the outer wall of the output shaft of the control motor.

[0013] Preferably, a plurality of toggle plates are provided, and the plurality of toggle plates are evenly distributed in a ring shape along the axis of the output shaft of the control motor.

[0014] The toggle plate is made of elastic material, and a groove is arranged on the side wall of the toggle plate. A pressing plate for pressing the toggle plate is fixedly installed on the inner wall of the accommodating box.

[0015] Preferably, an installation box is fixedly installed on the upper end surface of the accommodating box, a mounting bracket is slidably installed on the bottom surface of the installation box, a connecting pipe is fixedly installed on the bottom surface of the mounting bracket, one end of the connecting pipe extends to the interior of the accommodating box and a cleaning block is fixedly installed, and an air intake pipe connected to the inner cavity of the connecting pipe is fixedly installed on the outer wall of the cleaning block.

[0016] Preferably, a connecting tube is fixedly installed on the outer wall of the installation box, the other end of the connecting tube is communicated with the inner cavity of the accommodating tube, a supporting tube is fixedly installed on the inner wall of the installation box, and a negative pressure fan is fixedly installed on the inner wall of the supporting tube.

[0017] Preferably, a control cylinder is fixedly mounted on the inner wall of the installation box, a movable end of the control cylinder penetrates the bottom surface of the installation box, and the movable end of the control cylinder is fixedly connected to the outer wall of the installation frame.

[0018] Preferably, a storage box is fixedly mounted on the inner wall of the installation box, the inner cavity of the storage box is connected with the inner cavity of the connecting pipe through a conduit, and a filter baffle is fixedly mounted on the inner wall of the storage box.

[0019] Preferably, a closing plate for sealing the connecting tube is slidably installed on the inner wall of the installation box, an arc plate is fixedly installed on the outer wall of the closing plate, a guide tube is fixedly installed on the inner wall of the support tube, a transition tube is fixedly connected to the outer wall of the arc plate, and the inner cavity of the transition tube is connected to the inner cavity of the storage box through a conduit.

[0020] Preferably, a telescopic cylinder is fixedly mounted on the inner wall of the installation box, the output shaft of the telescopic cylinder is fixedly connected to the outer wall of the arc plate, two telescopic cylinders are provided, and the two telescopic cylinders are symmetrically arranged along the middle of the arc plate.

[0021] Preferably, a sealing plate is fixedly mounted on the inner wall of the guide tube, a sealing plug is elastically mounted on the upper end surface of the sealing plate, and a pressing rod for pressing the sealing plug is fixedly mounted in the inner cavity of the transition tube.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention provides a containing box and an installation box. A guide fan is provided inside the containing box, and a negative pressure fan is provided inside the installation box. The guide fan and the negative pressure fan cooperate to control the flow of air in contact with the winding coil, thereby improving the heat dissipation effect. At the same time, a control board and a heat exchange plate are provided inside the containing box. When the control board is refrigerated, the air blowing toward the inner cavity of the containing tube is reduced through the heat exchange plate. After the cold air enters the inner cavity of the containing tube, the temperature of the internal electronic components is reduced. Compared with the method of only using a fan to improve the heat dissipation efficiency of the surface of the heating part, by discharging the cooled air into the heating part, the cooling effect can be effectively improved, thereby improving the safety during use.

[0024] 2. The present invention provides a cleaning block with bristles on the outside of the cleaning block. The bristles fit the side walls of the heat exchange plate. The dust attached to the outer wall of the heat exchange plate can be swept away by sliding the cleaning block. An air suction pipe connected to the inner cavity of the connecting pipe is fixedly installed on the outer wall of the cleaning block. When the connecting pipe is connected to the negative pressure chamber, the dust swept away by the cleaning block is absorbed by the air suction pipe, so that the contact between the heat exchange plate and the air is maintained, thereby maintaining the refrigeration effect of the cold end of the control board and improving the heat dissipation efficiency of the winding coil inside the accommodating cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the installation of the accommodation box in the present invention;

[0028] Figure 3 It is a schematic diagram of the internal structure of the containing box in the present invention;

[0029] Figure 4 It is a schematic diagram of the installation of the cleaning block in the present invention;

[0030] Figure 5 It is a schematic diagram of the internal structure of the installation box in the present invention;

[0031] Figure 6 It is a structural schematic diagram of the curved plate in the present invention;

[0032] Figure 7 It is a schematic diagram of the installation of the top pressure rod in the present invention;

[0033] Figure 8 The present invention Figure 7 A magnified view of the structure at center A;

[0034] Fig. 9 It is a schematic diagram of the installation of the suction pipe in the present invention;

[0035] Fig.10 It is a schematic diagram of the internal structure of the storage box in the present invention.

[0036] In the figure: 1. accommodating cylinder; 2. accommodating box; 3. mounting cylinder; 4. control pump; 5. control motor; 6. heat exchange plate; 7. guide fan; 8. toggle plate; 9. top pressure plate; 10. control plate; 11. bearing plate; 12. mounting box; 13. negative pressure fan; 14. connecting pipe; 15. cleaning block; 16. filter baffle; 17. control cylinder; 18. arc plate; 19. connecting cylinder; 20. supporting cylinder; 21. storage box; 22. mounting frame; 23. closing plate; 24. top pressure rod; 25. telescopic cylinder; 26. transition cylinder; 27. sealing plate; 28. sealing plug; 29. ​​guide cylinder; 30. suction pipe. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0038] Embodiment 1: Figures 1 to 3 As shown, a dry-type transformer described in an embodiment of the present invention includes a storage unit, a control mechanism, a heat exchange mechanism and a flow guide mechanism.

[0039] The storage part includes a accommodating tube 1 and a accommodating box 2, wherein the accommodating tube 1 is used to provide storage space for the winding coil, wherein the iron core and the winding coil are both arranged in the inner cavity of the accommodating tube 1, and the inner cavity of the accommodating box 2 is connected with the inner cavity of the accommodating tube 1, and the air is exhausted to the inner cavity of the accommodating tube 1 through the inner cavity of the accommodating box 2, thereby dissipating heat for the electronic components inside the accommodating tube 1.

[0040] The control mechanism includes a mounting tube 3 and a guide fan 7. The mounting tube 3 is fixedly mounted on the outer wall of the containing box 2. A filter screen is arranged on the inner wall of the mounting tube 3 for filtering the air entering the inner cavity of the containing box 2 to achieve a dust removal effect.

[0041] The guide fan 7 is fixedly installed in the inner cavity of the mounting tube 3. The guide fan 7 is composed of a motor and fan blades. The outer shell of the motor is fixedly connected to the inner wall of the mounting tube 3. The fan blades are fixedly installed on the output shaft of the motor. The fan blades rotate to suck air into the inner cavity of the accommodating box 2 so as to exhaust air into the inner cavity of the accommodating tube 1. Compared with the Chinese patent with publication number CN115424823A, which only dissipates heat by blowing air outside the body, the heat dissipation effect can be effectively improved by directly passing the outside air into the cavity where the winding is installed.

[0042] The heat exchange mechanism includes a heat exchange plate 6 and a control plate 10 arranged at the bottom of the heat exchange plate 6. The heat exchange plate 6 is a common copper plate, and a plurality of heat exchange plates 6 are arranged. The plurality of heat exchange plates 6 are parallel to each other. The heat exchange plate 6 is located on one side of the guide fan 7. When the guide fan 7 is working, the air is controlled to blow toward the outer wall of the heat exchange plate 6 to realize heat exchange between the heat exchange plate 6 and the air.

[0043] The control board 10 is a common semiconductor refrigeration plate, and the bottom of the heat exchange plate 6 is in contact with the cold end of the control board 10. When the control board 10 is cooling, the air blowing toward the inner cavity of the accommodating tube 1 is reduced through the heat exchange plate 6. After the cold air enters the inner cavity of the accommodating tube 1, the internal electronic components are cooled and protected. Compared with the Chinese patent with publication number CN115424823A, which only uses a fan to improve the heat dissipation efficiency of the surface of the heating part, the cooling effect can be effectively improved by discharging the air into the heating part after cooling, thereby improving the safety during use.

[0044] The guide mechanism includes a bearing plate 11 and a toggle plate 8. The bearing plate 11 is fixedly mounted on the inner wall of the containing box 2. The control board 10 is fixedly mounted on the inner wall of the bearing plate 11. The hot end of the control board 10 extends to the bottom surface of the bearing plate 11. The bearing plate 11 provides an installation position for the control board 10. At the same time, the heat exchange plate 6 is fixedly mounted on the upper end surface of the bearing plate 11. The bearing plate 11 divides the inner cavity of the containing box 2 into two upper and lower chambers. The chamber at the bottom of the bearing plate 11 is used to store coolant. After the coolant contacts the hot end of the control board 10, the heat dissipation effect of the hot end of the control board 10 is improved, thereby improving the refrigeration effect of the cold end of the control board 10.

[0045] Since the cooling liquid in the cavity on the bottom of the carrier plate 11 needs to absorb the heat emitted by the control board 10, the cooling liquid is heated and vaporized, causing expansion. In order to prevent the inner cavity of the accommodating box 2 from deforming, it is necessary to reserve a part of space in the cavity on the bottom of the carrier plate 11 when in use. Under this premise, in order to facilitate the contact between the cooling liquid and the hot end of the control board 10, the toggle plate 8 is located on the bottom surface of the carrier plate 11 and is used to toggle the cooling liquid. The cooling liquid is lifted by the toggle plate 8, thereby driving the cooling liquid to contact the hot end of the control board 10, thereby improving the heat dissipation effect of the hot end of the control board 10.

[0046] A control pump 4 is fixedly installed on the outer wall of the containing box 2. The control pump 4 is a common micro water pump for controlling the flow of liquid. The output end of the control pump 4 extends to the inner cavity of the containing box 2, and the input end of the control pump 4 is connected to an external coolant storage chamber to facilitate the injection of coolant into the inner cavity of the containing box 2.

[0047] In order to facilitate the flow of coolant in the inner cavity of the containing box 2, a drain pipe is provided on the outer wall of the containing box 2 for discharging the coolant, and a solenoid valve is provided at any position in the drain pipe.

[0048] A control motor 5 is fixedly mounted on the outer wall of the containing box 2. The control motor 5 is a common servo motor. The output shaft of the control motor 5 extends to the inner wall of the containing box 2. A sealed bearing is provided at the contact position between the output shaft of the control motor 5 and the inner wall of the containing box 2 to prevent leakage of coolant.

[0049] The outer wall of the toggle plate 8 is fixedly connected to the outer wall of the output shaft of the control motor 5. When the hot end of the control plate 10 generates heat, the control motor 5 controls the toggle plate 8 to rotate, thereby facilitating the toggle plate 8 to lift the coolant.

[0050] In this embodiment, the control pump 4 intermittently injects water into the inner cavity of the containing box 2. When the control pump 4 injects water, the solenoid valve is closed until the water level in the inner cavity of the containing box 2 is at the desired position. At this time, the control pump 4 is closed. In the process of lifting the coolant and contacting the control board 10 through the toggle plate 8, the movement of the toggle plate 8 drives the coolant in the inner cavity of the containing box 2 to move, thereby achieving a stirring effect. In the process of cooling the control board 10 by the coolant, the temperature of the coolant inside the containing box 2 is uniform, and the heat exchange effect is maintained. Compared with the prior art, the real-time circulation of water is controlled by a water pump, which can reduce the energy consumption of controlling the flow of water and save energy.

[0051] There are multiple toggle plates 8, and the multiple toggle plates 8 are evenly distributed in a ring shape along the axis of the output shaft of the control motor 5. When the output shaft of the control motor 5 rotates, the centrifugal force on the outer wall of the output shaft can be kept as uniform as possible. At the same time, by setting up multiple toggle plates 8, the frequency of stirring up the coolant can be increased when the speed of the control motor 5 is fixed, thereby improving the heat dissipation efficiency of the hot end of the control board 10.

[0052] The toggle plate 8 is made of elastic material, and a groove is disposed on the side wall of the toggle plate 8. The groove is used to accommodate the coolant so that the toggle plate 8 can lift the coolant.

[0053] A pressing plate 9 for pressing the toggle plate 8 is fixedly installed on the inner wall of the accommodating box 2. The toggle plate 8 contacts the pressing plate 9 during its rotation. Continuing to rotate the toggle plate 8 causes the toggle plate 8 to deform until the toggle plate 8 is separated from the pressing plate 9. At this time, the toggle plate 8 releases its elastic potential energy, thereby controlling the toggle plate 8 to accelerate the movement of one end away from the output shaft of the control motor 5, thereby increasing the initial speed when lifting the coolant, and being used to increase the water flow rate when the coolant contacts the hot end of the control board 10.

[0054] Embodiment 2: Figures 4 to 10 As shown in Comparative Example 1, another embodiment of the present invention is:

[0055] The upper end surface of the accommodating box 2 is fixedly mounted with an installation box 12, and the bottom surface of the installation box 12 is slidably mounted with an installation frame 22, wherein the installation frame 22 can slide up and down in the vertical direction, and the installation frame 22 is a hollow structure.

[0056] A connecting pipe 14 is fixedly installed on the bottom surface of the mounting frame 22. The inner cavity of the connecting pipe 14 is communicated with the inner cavity of the mounting frame 22. One end of the connecting pipe 14 extends to the interior of the accommodating box 2 and a cleaning block 15 is fixedly installed thereon. The cleaning block 15 is a rubber block with bristles arranged on the outside. The bristles fit the side walls of the heat exchange plate 6. The cleaning block 15 can be slid to remove dust attached to the outer wall of the heat exchange plate 6, thereby maintaining contact between the heat exchange plate 6 and the air.

[0057] An air suction pipe 30 connected to the inner cavity of the connecting pipe 14 is fixedly installed on the outer wall of the cleaning block 15, wherein a cavity is provided inside the cleaning block 15 for connecting the air suction pipe 30 with the inner cavity of the cleaning block 15, and the inner cavity of the connecting pipe 14 is connected to the inner cavity of the cleaning block 15. When the connecting pipe 14 is connected to the negative pressure chamber, the dust swept away by the cleaning block 15 is absorbed through the air suction pipe 30.

[0058] In this embodiment, it should be noted that during the process of the cleaning block 15 sweeping away dust, the guide fan 7 needs to stop working to prevent dust from entering the inner cavity of the accommodating tube 1.

[0059] A connecting tube 19 is fixedly mounted on the outer wall of the installation box 12 , and the other end of the connecting tube 19 is communicated with the inner cavity of the accommodating tube 1 , so that the installation box 12 is connected with the inner cavity of the accommodating tube 1 through the connecting tube 19 .

[0060] A support tube 20 is fixedly installed on the inner wall of the installation box 12, and a negative pressure fan 13 is fixedly installed on the inner wall of the support tube 20. The negative pressure fan 13 is composed of a turbine and a motor. The motor controls the rotation of the turbine to generate negative pressure in the inner cavity of the support tube 20, and suck out the air in the inner cavity of the accommodating tube 1. The guide fan 7 and the negative pressure fan 13 cooperate to control the flow of gas in the inner cavity of the accommodating tube 1 to take away the heat in the inner cavity of the accommodating tube 1.

[0061] A control cylinder 17 is fixedly installed on the inner wall of the installation box 12. The control cylinder 17 is a common electric telescopic rod. The movable end of the control cylinder 17 passes through the bottom surface of the installation box 12, and the movable end of the control cylinder 17 is fixedly connected to the outer wall of the installation frame 22. The control cylinder 17 controls the lifting and lowering of the installation frame 22, thereby driving the cleaning block 15 to slide through the connecting pipe 14 to achieve cleaning of the heat exchange plate 6.

[0062] A storage box 21 is fixedly mounted on the inner wall of the mounting box 12. The inner cavity of the storage box 21 is connected to the inner cavity of the connecting pipe 14 through a conduit, and the storage box 21 is connected to the negative pressure chamber, thereby cooperating with the suction pipe 30 through the connecting pipe 14 to absorb dust.

[0063] A filter partition 16 is fixedly installed on the inner wall of the storage box 21, and the filter partition 16 divides the inner cavity of the storage box 21 into two left and right chambers. The left chamber is connected to the negative pressure chamber, and the right chamber is connected to the connecting pipe 14. The dust is blocked by the filter partition 16, thereby removing the dust from the mobile phone through the storage box 21.

[0064] A closing plate 23 for sealing the connecting tube 19 is slidably mounted on the inner wall of the installation box 12. When the negative pressure fan 13 is in operation, the opening end of the connecting tube 19 is closed by sliding the closing plate 23, thereby disconnecting the inner cavity of the installation box 12 from the accommodating tube 1.

[0065] The outer wall of the closing plate 23 is fixedly mounted with an arc plate 18, and the inner wall of the arc plate 18 is provided with rubber. After the sliding closing plate 23 controls the arc plate 18 to fit with the outer wall of the support tube 20, a sealed connection between the arc plate 18 and the support tube 20 is achieved.

[0066] A guide tube 29 is fixedly mounted on the inner wall of the support tube 20 , and a transition tube 26 is fixedly connected to the outer wall of the arc plate 18 . After the arc plate 18 is attached to the outer wall of the support tube 20 , the guide tube 29 is connected to the inner cavity of the transition tube 26 .

[0067] The inner cavity of the transition tube 26 is connected with the inner cavity of the storage box 21 through a conduit. When cleaning the heat exchange plate 6, slide the closing plate 23 until the closing plate 23 blocks the connecting tube 19 to prevent the negative pressure in the inner cavity of the support tube 20 from controlling the flow of gas in the inner cavity of the accommodating tube 1. Slide the closing plate 23 until the arc plate 18 is in contact with the outer wall of the support tube 20. At this time, the storage box 21 and the inner cavity of the support tube 20 are connected, and then the negative pressure in the inner cavity of the support tube 20 absorbs dust, thereby achieving the effect of cleaning the heat exchange plate 6.

[0068] A telescopic cylinder 25 is fixedly installed on the inner wall of the installation box 12. The telescopic cylinder 25 is a common electric telescopic rod. The output shaft of the telescopic cylinder 25 is fixedly connected to the outer wall of the arc plate 18. The arc plate 18 and the closing plate 23 are upgraded by the telescopic cylinder 25. When heat is dissipated, the telescopic cylinder 25 controls the closing plate 23 to slide in the opposite direction, so that the inner cavity of the installation box 12 and the connecting tube 19 are connected, so as to facilitate the suction of the air inside the accommodating tube 1.

[0069] In order to improve the sliding stability of the arc plate 18, two telescopic cylinders 25 are provided, and the two telescopic cylinders 25 are symmetrically arranged along the middle part of the arc plate 18, thereby improving the sliding stability of the arc plate 18. After the arc plate 18 is in contact with the outer wall of the support tube 20, the arc plate 18 is kept evenly stressed to prevent air leakage.

[0070] A sealing plate 27 is fixedly installed on the inner wall of the guide tube 29, and a sealing plug 28 is elastically installed on the upper end surface of the sealing plate 27. The sealing plug 28 is a common conical rubber plug. A through hole adapted to the sealing plug 28 is opened on the inner wall of the sealing plate 27, and a connecting rod is slidably installed in the sealing plate 27. One end of the connecting rod is fixedly connected to the outer wall of the sealing plug 28. A spring is fixedly installed on the outer wall of the connecting rod, and the other end of the spring is fixedly connected to the outer wall of the sealing plate 27, thereby controlling the sealing plug 28 to have a tendency to fit the sealing plate 27 in real time.

[0071] When the closing plate 23 closes the connecting tube 19 , the sliding sealing plug 28 is separated from the sealing plate 27 , thereby achieving communication between the inner cavity of the supporting tube 20 and the inner cavity of the guide tube 29 , so as to provide negative pressure for the inner cavity of the storage box 21 .

[0072] When the closing plate 23 is away from the connecting tube 19 , the dynamic sealing plug 28 fits with the sealing plate 27 to seal the guide tube 29 , and the supporting tube 20 is kept to provide negative pressure for the inner cavity of the accommodating tube 1 .

[0073] The inner cavity of the transition tube 26 is fixedly installed with a pressing rod 24 for pressing the sealing plug 28. When the sliding arc plate 18 approaches the support tube 20, the transition tube 26 approaches the guide tube 29 until the pressing rod 24 pushes the sealing plug 28 to separate from the sealing plate 27, thereby realizing the connection between the inner cavities of the transition tube 26 and the guide tube 29.

[0074] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dry-type transformer, characterized in that: It includes a storage unit, a control unit, a heat exchange unit and a flow guide unit; The storage portion comprises a accommodating cylinder (1) and a accommodating box (2); the accommodating cylinder (1) is used to provide a storage space for the winding coil, and the inner cavity of the accommodating box (2) is in communication with the inner cavity of the accommodating cylinder (1); The control mechanism comprises a mounting tube (3) and a flow guide fan (7), wherein the mounting tube (3) is fixedly mounted on the outer wall of the containing box (2), and the flow guide fan (7) is fixedly mounted in the inner cavity of the mounting tube (3); The heat exchange mechanism comprises a heat exchange plate (6) and a control plate (10) arranged at the bottom of the heat exchange plate (6), and the heat exchange plate (6) is located on one side of the guide fan (7); The flow guide mechanism comprises a bearing plate (11) and a toggle plate (8), the bearing plate (11) being fixedly mounted on the inner wall of the containing box (2), the control plate (10) being fixedly mounted on the inner wall of the bearing plate (11), and the hot end of the control plate (10) extending to the bottom surface of the bearing plate (11), and the toggle plate (8) being located on the bottom surface of the bearing plate (11) and used for toggle the coolant; A control pump (4) is fixedly mounted on the outer wall of the containing box (2), the output end of the control pump (4) extends to the inner cavity of the containing box (2), a control motor (5) is fixedly mounted on the outer wall of the containing box (2), the output shaft of the control motor (5) extends to the inner wall of the containing box (2), and the outer wall of the toggle plate (8) is fixedly connected to the outer wall of the output shaft of the control motor (5); A plurality of the toggle plates (8) are provided, and the plurality of the toggle plates (8) are evenly distributed in a ring shape along the axis of the output shaft of the control motor (5); The toggle plate (8) is made of elastic material, and a groove is provided on the side wall of the toggle plate (8); a pressing plate (9) for pressing the toggle plate (8) is fixedly mounted on the inner wall of the accommodating box (2); An installation box (12) is fixedly mounted on the upper end surface of the accommodating box (2), a mounting frame (22) is slidably mounted on the bottom surface of the installation box (12), a connecting pipe (14) is fixedly mounted on the bottom surface of the mounting frame (22), one end of the connecting pipe (14) extends into the interior of the accommodating box (2) and is fixedly mounted with a cleaning block (15), and an air intake pipe (30) communicating with the inner cavity of the connecting pipe (14) is fixedly mounted on the outer wall of the cleaning block (15); A connecting tube (19) is fixedly mounted on the outer wall of the installation box (12), the other end of the connecting tube (19) is in communication with the inner cavity of the accommodating tube (1), a supporting tube (20) is fixedly mounted on the inner wall of the installation box (12), and a negative pressure fan (13) is fixedly mounted on the inner wall of the supporting tube (20).

2. A dry-type transformer according to claim 1, characterized in that: A control cylinder (17) is fixedly mounted on the inner wall of the installation box (12), the movable end of the control cylinder (17) passes through the bottom surface of the installation box (12), and the movable end of the control cylinder (17) is fixedly connected to the outer wall of the installation frame (22).

3. A dry-type transformer according to claim 2, characterized in that: A storage box (21) is fixedly mounted on the inner wall of the installation box (12); the inner cavity of the storage box (21) is connected to the inner cavity of the connecting pipe (14) via a conduit; and a filter partition (16) is fixedly mounted on the inner wall of the storage box (21).

4. A dry-type transformer according to claim 3, characterized in that: A closing plate (23) for sealing the connecting tube (19) is slidably mounted on the inner wall of the installation box (12); an arc-shaped plate (18) is fixedly mounted on the outer wall of the closing plate (23); a flow guide tube (29) is fixedly mounted on the inner wall of the support tube (20); a transition tube (26) is fixedly connected to the outer wall of the arc-shaped plate (18); and an inner cavity of the transition tube (26) is connected to an inner cavity of the storage box (21) via a conduit.

5. A dry-type transformer according to claim 4, characterized in that: A telescopic cylinder (25) is fixedly mounted on the inner wall of the installation box (12), an output shaft of the telescopic cylinder (25) is fixedly connected to the outer wall of the arc-shaped plate (18), two telescopic cylinders (25) are provided, and the two telescopic cylinders (25) are symmetrically arranged along the middle of the arc-shaped plate (18).

6. A dry-type transformer according to claim 5, characterized in that: A sealing plate (27) is fixedly mounted on the inner wall of the guide tube (29), a sealing plug (28) is elastically mounted on the upper end surface of the sealing plate (27), and a pressing rod (24) for pressing the sealing plug (28) is fixedly mounted in the inner cavity of the transition tube (26).

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