A dry-type transformer production device

Abstract

The application discloses a dry-type transformer production equipment and belongs to the field of transformer production. The device comprises a rack, a negative pressure dust collection workbench arranged at the middle part of the rack, a support arranged above the negative pressure dust collection workbench, two groups of support plates arranged at the top of the rack, a driving shaft one rotatably arranged in one group of the support plates, a driving shaft two rotatably arranged in the other group of the support plates, and clamping pieces arranged at the output ends of the driving shaft one and the driving shaft two and used for clamping an insulating cylinder. The negative pressure dust collection workbench is arranged at the middle part of the rack to adsorb and blow away the copper scraps and insulating dust. A hierarchical pressure relief gas path composed of a buffer pipe, a gradually expanding inverted conical middle nozzle and a circular corner exhaust hole pressure reduction circular plate is arranged to weaken the high pressure of the air compressor starting and stopping transient peak value, and the hierarchical pressure relief gas path is cooperated with the air compressor to improve the yield of the dry-type transformer winding.

Description

Technical Field

[0001] This invention relates to the field of transformer manufacturing technology, specifically to a dry-type transformer manufacturing equipment. Background Technology

[0002] During the production of dry-type transformer windings, copper metal shavings and insulating dust are continuously generated during wire cutting and insulation paper wrapping. Dust adhering to the winding layers can easily cause partial discharge and insulation aging failure during transformer operation. Therefore, the industry generally uses air jet cleaning dust removal mechanisms. For example, existing public technology, such as prior art document CN119601372A, discloses a dry-type transformer production equipment. This equipment is equipped with synchronously movable air jet pipes, which use a fan to deliver clean airflow to blow away impurities in the winding area, thus improving the problem of winding dust accumulation to a certain extent.

[0003] In the existing technology, the winding of dry-type transformers adopts a layered winding process. The innermost starting coil of the insulating cylinder is made of ultra-fine enameled wire. The wire diameter is small and its own rigidity is poor. In the early stage of winding, only a small number of wires are fixed to the cylinder wall. The wire bundle has no outer layer coil support and constraint, and is easily disturbed by external airflow. As the number of winding layers is gradually added, the outer layer is replaced with thicker enameled wire. The multiple layers of wires are squeezed together to form an overall support. The overall rigidity of the winding changes and can withstand the impact of higher intensity airflow.

[0004] However, the aforementioned mobile purging equipment still has the following drawbacks: 1. Dust is stirred up by the airflow in one direction only through the jet pipe without the matching negative pressure adsorption structure. Metal scraps and insulating dust are blown away by the airflow and drift aimlessly. They are very easy to fall back and adhere to the surface of the winding being wound, embedding into the air channel between coil layers, which greatly reduces the reliability of winding insulation and creates a hidden danger of partial discharge fault in transformer. 2. The existing winding purging equipment has a straight-through pipeline without a buffer pressure relief structure. When the air compressor is used for purging, the start and stop will generate instantaneous high-pressure pulse airflow. The high-pressure airflow directly impacts the initially unsupported ultra-fine enameled wire, which can easily disrupt the wire arrangement, cause the turns to shift, and the stacked wires to misalign, greatly increasing the coil scrap rate and reducing the winding processing yield. Summary of the Invention

[0005] The purpose of this invention is to provide a dry-type transformer production equipment to solve the problem of secondary dust contamination of windings caused by the existing technology, which only has unidirectional air blowing and no directional dust recovery structure.

[0006] The technical problem to be solved by this invention can be achieved through the following technical solution: a dry-type transformer production equipment, comprising: The frame has a negative pressure dust collection workbench in the middle. The bracket is set above the negative pressure dust collection workbench. The bottom of the bracket is provided with two sets of support plates installed above the frame. One set of support plates is rotatably equipped with a drive shaft, and the other set of support plates is rotatably equipped with a drive shaft. The output ends of the drive shaft and the drive shaft are both equipped with clamping parts for clamping the insulating cylinder. A dust removal assembly is slidably mounted above a support.

[0007] Preferably, a slide rail is provided above the bracket, a movable stage is slidably mounted within the slide rail, a positioning block is provided on the top of the movable stage, a threaded rod is threadedly connected to the positioning block, and a servo motor is provided on the top of the bracket for driving the threaded rod to rotate, the end of the threaded rod being rotatably engaged with the bracket. Preferably, the dust removal assembly includes a buffer tube vertically disposed inside the moving platform, an air inlet pipe on the input side of the buffer tube, an air intake pipe on the output side of the buffer tube, and a central dust removal plate disposed towards the insulating cylinder on the output side of the air intake pipe.

[0008] Preferably, a plurality of central nozzles are equidistantly installed on the output side of the central dust removal plate. The central nozzles have an inverted conical hollow structure. A pressure-reducing circular plate is installed on the output side of the central nozzles. A plurality of exhaust holes are evenly opened on the inner wall of the pressure-reducing circular plate. The bottom of the exhaust holes has a rounded corner structure.

[0009] Preferably, the buffer tube is equipped with several removable buffer perforated plates, which are coaxially arranged with the buffer tube and are equidistantly arranged inside the buffer tube.

[0010] Preferably, the top of the mobile platform is provided with a mounting frame, and an electric push rod is vertically provided on the mounting frame. Side dust removal plates are rotatably provided on both sides of the central dust removal plate. Several side nozzles are provided on the output side of the side dust removal plate. A connecting pipe is provided between the input side of the side dust removal plate and the side wall of the air inlet pipe. A control valve is provided on the outer wall of the connecting pipe.

[0011] Preferably, the side dust removal plate is inclined downward from one end near the middle dust removal plate to the end away from the middle dust removal plate.

[0012] Preferably, a connecting rod is rotatably mounted on the top of the side dust removal plate, and an installation rod is rotatably connected to the top of the connecting rod. The end of the installation rod is fixedly connected to the side wall of the protruding end of the electric push rod.

[0013] Preferably, a blocking post is slidably provided in the middle of a plurality of buffer plates, the top of the blocking post extending outside the buffer tube and fixedly connected to the protruding end of the electric push rod.

[0014] Preferably, the bottom wall of the blocking column corresponds to the bottom wall of the lowest set of buffer orifice plates.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: 1. The present invention provides a negative pressure dust collection workbench in the middle of the frame to absorb and sweep up copper shavings and insulating dust; a graded pressure relief air path consisting of a buffer tube, a gradually expanding inverted conical nozzle, and a pressure-reducing circular plate with rounded exhaust holes is provided to weaken the instantaneous peak high pressure during the start-up and shutdown of the air compressor; and by adding a coaxial detachable buffer plate inside the buffer tube, the buffer plate, together with the original buffer tube, inverted conical nozzle, and pressure-reducing circular plate with rounded exhaust holes, forms a composite pressure relief structure, which enhances the dissipation effect on the instantaneous peak high pressure during the start-up and shutdown of the air compressor.

[0016] 2. This invention assembles side dust collector plates by rotating them on both sides of the central dust collector plate. A connecting pipe connects the air inlet pipe, and a control valve enables airflow diversion. An additional side nozzle outlet branch is added, working in conjunction with the central dust collector plate to expand the airflow area. Furthermore, an electric push rod, connecting rod, and mounting rod are linked to the side dust collector plates. The extension and retraction of the electric push rod causes the side dust collector plates to flip and change position, altering the placement of the side nozzles to accommodate variations in the outer diameter of different windings. The compressed air input volume and supply pressure are adjustable, providing synchronous air supply to both dust collector structures and offering airflow parameters suitable for interlayer cleaning of the windings. This solves the problem of impurities in the interlayer gaps being difficult to remove after the windings thicken.

[0017] 3. This invention uses an electric push rod that drives the side dust collector plate to move, which is then linked to the assembly of the blocking column, so that the blocking column and the side dust collector plate have a linkage relationship. The blocking column is slidably assembled in the middle position of the buffer orifice plate and can slide synchronously with the movement of the electric push rod, selectively blocking or opening the middle channel of the buffer orifice plate. When the winding is purged with a small outer diameter, the sliding hole is blocked, retaining the pressure relief and stabilization function of the multi-stage orifice plate in Embodiment 2. When the winding is thickened and the dual-channel high-pressure is purged, the middle channel is opened, which reduces the flow resistance of high-pressure airflow, eliminates the air supply lag, and at the same time reduces the high pressure in the diversion pipe, reducing the structural load of the pressurized airflow on the buffer pipe and the buffer orifice plate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the overall structure of the insulating cylinder used in the invention.

[0019] Figure 2 This is a perspective view of the overall structure of the present invention.

[0020] Figure 3 This is a three-dimensional view of the external structure of the bracket in this invention.

[0021] Figure 4 This is a three-dimensional view of the structure below the support in this invention.

[0022] Figure 5 This is a front view of the overall internal structure of the support in this invention.

[0023] Figure 6 This is a front view of the internal structure of the buffer tube in this invention.

[0024] Figure 7 This is a three-dimensional view of the internal structure of the nozzle in this invention.

[0025] Figure 8 This is a three-dimensional view of the internal structure of the buffer tube in this invention.

[0026] Explanation of reference numerals in the attached figures: 1. Frame; 2. Negative pressure dust collection workbench; 3. Drive motor; 4. Insulating cylinder; 5. Bracket; 6. Support plate; 7. Drive shaft one; 8. Hydraulic cylinder; 9. Drive shaft two; 11. Slide rail; 12. Threaded rod; 13. Moving table; 14. Positioning block; 15. Central dust collection plate; 16. Buffer tube; 17. Air inlet pipe; 18. Air intake pipe; 20. Electric push rod; 21. Mounting bracket; 22. Mounting rod; 23. Connecting rod; 24. Side dust collection plate; 25. Side nozzle; 26. Connecting pipe; 27. Control valve; 30. Blocking column; 31. Buffer orifice plate; 32. Central nozzle; 33. Pressure reducing circular plate; 34. Exhaust port. Detailed Implementation

[0027] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0028] Example 1 Existing dry-type transformer winding synchronous moving blowing devices only have a unidirectional jet structure and lack a full-area negative pressure adsorption mechanism. During the winding process, metal copper shavings and insulating paper dust raised by the airflow are scattered irregularly in all directions. The dust is easy to fall back and adhere to and embed itself in the interlayer air duct of the winding being wound. Long-term operation will reduce the insulation performance of the winding, thereby inducing partial discharge and insulation aging and breakdown faults in the transformer. At the same time, the winding blowing equipment pipeline is directly connected without a buffer pressure relief structure. The start and stop of the air compressor will generate instantaneous high-pressure pulse airflow. During this stage, the airflow pressure is higher than the steady-state blowing air pressure, which directly impacts the newly formed and relatively weak ultra-fine enameled wire on the surface of the insulating cylinder 4. This can easily disrupt the conductor arrangement, cause turn offset, and stacking misalignment, increase the probability of coil scrapping, and reduce the yield of winding processing.

[0029] like Figures 1 to 7In this embodiment, a dry-type transformer production equipment is used to wind coils on insulating cylinders 4 inside a dry-type transformer. It includes: a frame 1, a support 5, and a dust blowing assembly; a negative pressure dust suction workbench 2 is provided in the middle of the frame 1; the support 5 is located above the negative pressure dust suction workbench 2, and two sets of support plates 6 installed above the frame 1 are provided at the bottom of the support 5. A drive shaft 7 is rotatably installed in one set of support plates 6, and a drive shaft 9 is rotatably installed in the other set of support plates 6. The output ends of both drive shaft 7 and drive shaft 9 are provided with clamping parts for clamping the insulating cylinder 4; the dust blowing assembly is slidably located above the support 5.

[0030] A slide rail 11 is provided on the top of the bracket 5. A movable stage 13 is slidably provided in the slide rail 11. A positioning block 14 is provided on the top of the movable stage 13. A threaded rod 12 is threadedly connected in the positioning block 14. A servo motor for driving the threaded rod 12 to rotate is provided on the top of the bracket 5. The end of the threaded rod 12 is rotatably engaged with the bracket 5.

[0031] The dust blowing assembly includes a buffer tube 16 vertically disposed inside the moving platform 13. The input side of the buffer tube 16 is provided with an air inlet pipe 17, and the output side of the buffer tube 16 is provided with an air inlet pipe 18. The output side of the air inlet pipe 18 is connected to a central dust removal plate 15 disposed towards the insulating cylinder 4.

[0032] Several central nozzles 32 are equidistantly installed on the output side of the central dust removal plate 15. The central nozzles 32 have an inverted conical hollow structure. A pressure-reducing circular plate 33 is installed on the output side of the central nozzles 32. Several exhaust holes 34 are evenly opened on the inner wall of the pressure-reducing circular plate 33. The bottom of the exhaust holes 34 has a rounded corner structure.

[0033] Working principle: During the winding operation, the two ends of the insulating cylinder 4 are clamped and positioned by the clamping parts and rotated to complete the coil winding process; the servo motor drives the threaded rod 12 to rotate, which drives the moving table 13 to slide along the slide rail 11, and the dust blowing component moves synchronously with the coil winding feed; the air compressor outputs compressed air, which is sent to the buffer pipe 16 through the air inlet pipe 17. The buffer pipe 16 accumulates airflow and weakens the instantaneous pulse peak high pressure generated by the start and stop of the air compressor; the airflow is delivered to the middle dust removal plate 15 through the air inlet pipe 18 and split to each inverted conical nozzle 32. The cross-section of the inner cavity of the nozzle 32 gradually expands from the air inlet end to the air outlet end, increasing the airflow flow cross-sectional area and realizing the initial flow expansion and pressure reduction; after the airflow contacts the pressure reduction circular plate 33, the flow velocity and wind pressure are attenuated and split, and the airflow is discharged through the exhaust hole 34 to realize the secondary pressure reduction; the bottom of the exhaust hole 34 adopts a rounded corner transition structure to ventilate the airflow and blow away the dust on the surface of the insulating cylinder 4, reducing the effect of the instantaneous high pressure airflow on the inner ultra-fine enameled wire.

[0034] It should be emphasized that the core improvement of this embodiment is: a negative pressure dust collection workbench 2 is set in the middle of the frame 1 to absorb and sweep up copper shavings and insulating dust; a graded pressure relief air path is set up, consisting of a buffer pipe 16, a gradually expanding inverted cone-shaped nozzle 32, and a pressure-reducing circular plate 33 with rounded exhaust holes 34, to weaken the instantaneous peak high pressure of the air compressor during start-up and shutdown.

[0035] It should be noted that, such as Figure 1 , Figure 2 The negative pressure dust collection workbench 2 is a well-known existing dust collection equipment in the field of mechanical processing. It adopts a hollow box structure with a grid suction surface on the top. The box is connected to a negative pressure fan and relies on the negative pressure of the entire table surface to adsorb processing dust.

[0036] It should be noted that the target of this embodiment is specific, and it only performs pressure storage, flow expansion, and flow diversion attenuation on the instantaneous pulse high pressure during the start-up and shutdown of the air compressor; when the equipment is operating with stable air supply, no additional pulse high pressure is generated, and the buffer pipe 16, the inverted conical nozzle 32, and the pressure reducing circular plate 33 only divert and guide the airflow, without intercepting or blocking the steady-state purging airflow, and the pipeline airflow does not change significantly, and the steady-state outlet air pressure remains at the original set parameters.

[0037] It should be noted that this embodiment is suitable for single-path purging of coils with small outer diameter and thin winding thickness in the early stage of winding. Under this condition, the equipment can meet the surface dust purging requirements by using steady-state low-pressure air supply.

[0038] It should be noted that the clamping device is a functional device in the prior art that has the function of clamping the four ends of the insulating cylinder, and is therefore part of the prior art.

[0039] In this embodiment, a drive motor 3 for driving the drive shaft 7 to rotate is installed on the frame 1. A hydraulic cylinder 8 is also installed on the frame 1 and is rotatably connected to the end of the drive shaft 9. The insulating cylinder 4 is placed between two clamping members. Then, the extension end of the hydraulic cylinder 8 is controlled to extend, and the insulating cylinder 4 between the two clamping members is further reinforced. Finally, the rotation of the insulating cylinder 4 is achieved by controlling the drive motor 3 to rotate.

[0040] Example 2 It is understandable that the buffer pipe 16, the inverted conical nozzle 32, and the pressure-reducing disc 33 installed in Example 1 can weaken the instantaneous high-pressure pulse generated by the start-up and shutdown of the air compressor. It relies on the pressure storage in the cavity of the buffer pipe 16 and the external expansion and pressure relief of the inverted conical nozzle 32 to have a limited effect on dissipating the concentrated peak high pressure that surges in at the moment of start-up and shutdown of the air compressor. The residual instantaneous high pressure will still act on the inner layer of the ultra-fine enameled wire of the insulating cylinder 4, which may disturb the wire and cause the turn wire to shift.

[0041] like Figures 6 to 7To solve the above problems, several removable buffer plates 31 are installed inside the buffer tube 16. The buffer plates 31 are coaxially arranged with the buffer tube 16, and the buffer plates 31 are equidistantly arranged inside the buffer tube 16.

[0042] The working principle of enhanced airflow buffering: After compressed air enters the buffer pipe 16, it passes through multiple coaxially and equidistantly arranged buffer orifice plates 31 in sequence. The instantaneous peak airflow generated by the start and stop of the air compressor is divided and blocked by the buffer orifice plates 31, and the airflow impacts the surface of the buffer orifice plates 31, dissipating the pulse high pressure step by step. After the airflow is regulated by the buffer orifice plates 31, it flows through the air inlet pipe 18, the middle dust removal plate 15, the inverted cone-shaped nozzle 32, and the pressure reducing circular plate 33 in sequence to complete the diversion and pressure relief, weakening the residual impact airflow.

[0043] It should be emphasized that the core improvement of this embodiment is that a coaxial detachable buffer orifice plate 31 is added inside the buffer tube 16. The buffer orifice plate 31, together with the original buffer tube 16, the inverted conical nozzle 32, and the pressure-reducing circular plate 33 with rounded exhaust holes 34, forms a composite pressure relief structure, which enhances the dissipation effect on the instantaneous peak high pressure of the air compressor during start-up and shutdown.

[0044] Example 3 It is understandable that in Embodiment 1, the blowing operation is completed solely by the central dust removal plate 15, and the air outlet coverage of the central dust removal plate 15 is fixed. During the winding process, the outer diameter of the coil outside the insulating cylinder 4 gradually increases, the lateral dimension of the winding widens, and the outer area of ​​the winding is separated from the air outlet coverage of the central dust removal plate 15. There is no airflow in this area, and dust is easily trapped and adhered to the outer surface of the winding. Secondly, after the outer diameter of the coil is thickened, the stacking of multiple layers of wire forms interlayer gaps, which is more stable than the initial stage of coil winding. However, the air volume and wind pressure output by a single air path are difficult to act on the impurities embedded in the gaps. Thirdly, the overall shape of the central dust removal plate 15 is not adjustable, and the air outlet position cannot change with the outer diameter of the winding.

[0045] like Figures 5 to 6 To solve the above problems, a mounting frame 21 is provided on the top of the mobile platform 13. An electric push rod 20 is vertically installed on the mounting frame 21. Side dust removal plates 24 are rotatably provided on both sides of the central dust removal plate 15. Several side nozzles 25 are provided on the output side of the side dust removal plate 24. A connecting pipe 26 is provided between the input side of the side dust removal plate 24 and the side wall of the air inlet pipe 18. A control valve 27 is provided on the outer wall of the connecting pipe 26.

[0046] The side dust removal plate 24 is inclined downward from one end near the middle dust removal plate 15 to the end away from the middle dust removal plate 15; the side dust removal plate 24 is inclined downward, which limits the air outlet direction of the side nozzle 25, so that the air outlet airflow corresponds to the outer wall surface of the winding.

[0047] A connecting rod 23 is rotatably mounted on the top of the side dust removal plate 24, and an mounting rod 22 is rotatably connected to the top of the connecting rod 23. The end of the mounting rod 22 is fixedly connected to the side wall of the protruding end of the electric push rod 20.

[0048] Working principle: By increasing the input volume and supply pressure of compressed air, the control valve 27 is opened, and the airflow inside the buffer pipe 16 is diverted to the connecting pipe 26 through the air inlet pipe 18. After the airflow is introduced into the side dust collector plate 24, it is output through the side nozzle 25. The airflow acts on the outer area of ​​the winding that exceeds the coverage of the middle dust collector plate 15. Increasing the input volume and supply pressure of compressed air, on the one hand, supplements the airflow supply for the simultaneous airflow from the middle dust collector plate 15 and the side dust collector plate 24, and on the other hand, matches the airflow parameters required for blowing away impurities between the thickened winding layers. As the outer diameter of the coil on the outer wall of the insulating cylinder 4 increases, the extended end of the electric push rod 20 retracts, causing the mounting rod 22 to move upward. The mounting rod 22 pulls the connecting rod 23 to move upward in sync, driving the side dust removal plate 24 to flip outward, adjusting the placement of the side nozzles 25 to fit the winding with its gradually increasing outer diameter.

[0049] It should be emphasized that the core improvement of this embodiment lies in: rotating and assembling side dust collector plates 24 on both sides of the central dust collector plate 15, connecting the air inlet pipe 18 through the connecting pipe 26, and achieving air path diversion with the control valve 27, adding side nozzles 25 air outlet branches, and cooperating with the central dust collector plate 15 to output air, thus widening the airflow action area; and setting electric push rod 20, connecting rod 23, and mounting rod 22 to link and connect the side dust collector plates 24, relying on the extension and retraction of the electric push rod 20 to drive the side dust collector plates 24 to flip and change the position of the side nozzles 25, adapting to the problem of different winding outer diameter changes; the compressed air input volume and supply pressure can be adjusted to supply air synchronously to the two dust collection structures, providing airflow parameters suitable for the interlayer purging of the windings, and solving the problem that impurities in the interlayer gaps are difficult to be removed by the air path after the windings are thickened.

[0050] Example 4 It is understandable that, based on the structures of Embodiments 2 and 3, multiple sets of buffer orifice plates 31 are equidistantly arranged inside the buffer pipe 16. Under normal conditions, the buffer orifice plates 31 completely block the flow channel of the buffer pipe 16, relying on the layered obstruction of airflow and dissipation of instantaneous high pressure on the orifice plate surface. In Embodiment 3, the dual-channel purging operation requires adjusting the pipeline air pressure and increasing the air supply volume. The multi-layer buffer orifice plates 31 completely block the pipeline, which not only results in greater airflow resistance but also limits the airflow rate after pressure increase and causes a lag in the supply of purging airflow. At the same time, the closed orifice plates will intercept high-pressure airflow, causing local pressure increase inside the buffer pipe 16. Under long-term high-pressure conditions, this will exacerbate the structural wear of the buffer pipe 16 and buffer orifice plates 31, affecting the service life of the components.

[0051] like Figures 6 to 7To solve the above problems, a blocking post 30 is slidably provided in the middle of several buffer orifice plates 31. The top of the blocking post 30 extends to the outside of the buffer tube 16 and is fixedly connected to the protruding end of the electric push rod 20. The bottom wall of the blocking post 30 corresponds to the bottom wall of the lowest set of buffer orifice plates 31.

[0052] Working principle: During the process of the electric push rod 20 controlling the side dust removal plate 24 to rotate and move upward, the extended end of the electric push rod 20 simultaneously pulls the blocking column 30 upward, and the blocking column 30 slides upward along the middle of the buffer orifice plate 31; after the blocking column 30 moves upward, it not only releases the blockage of the middle of the buffer orifice plate 31 and opens the middle of the buffer tube 16, but also gradually opens multiple sets of channels in the middle of the buffer orifice plate 31 as the electric push rod 20 continues to retract. That is, the larger the winding, the more channels in the middle of the buffer orifice plate 31 are opened. The pressurized airflow can pass through the middle of the buffer orifice plate 31, reducing the airflow resistance and accelerating the flow speed of the airflow through the buffer tube 16, diverting the high pressure accumulated inside the buffer tube 16, and slowly releasing the local pressure in the pipeline.

[0053] It should be emphasized that the core improvement of this embodiment is as follows: the electric push rod 20 that drives the side dust removal plate 24 to change position is linked to the blocking column 30, so that the blocking column 30 and the side dust removal plate 24 have a linkage relationship; the blocking column 30 is slidably mounted in the middle position of the buffer orifice plate 31, and can slide synchronously with the movement of the electric push rod 20, selectively blocking or opening the middle channel of the buffer orifice plate 31; when the winding is purged with a small outer diameter, the sliding hole is blocked, retaining the pressure relief and stabilization function of the multi-stage orifice plate in embodiment two; when the winding is thickened and the dual-channel high-pressure is purged, the middle channel is opened, which reduces the flow resistance of high-pressure airflow, eliminates the air supply lag, and at the same time diverts the high pressure in the diversion pipe, reducing the structural load of the pressurized airflow on the buffer pipe 16 and the buffer orifice plate 31.

[0054] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed application.

Claims

1. A dry-type transformer manufacturing equipment, characterized in that, include: A frame (1) is provided with a negative pressure dust collection workbench (2) in the middle of the frame (1). The bracket (5) is set above the negative pressure dust collection workbench (2). The bottom of the bracket (5) is provided with two sets of support plates (6) installed above the frame (1). One set of the support plates (6) is provided with a drive shaft (7) rotating inside, and the other set of the support plates (6) is provided with a drive shaft (9) rotating inside. The output ends of the drive shaft (7) and the drive shaft (9) are both provided with clamping parts for clamping the insulating cylinder (4). A dust blowing assembly is slidably disposed above the bracket (5).

2. The dry-type transformer production equipment as described in claim 1, characterized in that, A slide rail (11) is provided above the bracket (5), and a moving platform (13) is slidably provided in the slide rail (11). A positioning block (14) is provided on the top of the moving platform (13), and a threaded rod (12) is threadedly connected in the positioning block (14). A servo motor for driving the threaded rod (12) to rotate is provided on the top of the bracket (5), and the end of the threaded rod (12) is rotatably engaged with the bracket (5).

3. The dry-type transformer production equipment as described in claim 2, characterized in that, The dust blowing assembly includes a buffer tube (16) vertically arranged inside the moving platform (13). The input side of the buffer tube (16) is provided with an air inlet pipe (17), and the output side of the buffer tube (16) is provided with an air inlet pipe (18). The output side of the air inlet pipe (18) is connected to a central dust removal plate (15) arranged towards the insulating cylinder (4).

4. The dry-type transformer production equipment as described in claim 3, characterized in that, The output side of the central dust removal plate (15) is equipped with several central nozzles (32) at equal intervals. The central nozzles (32) have an inverted conical hollow structure. The output side of the central nozzles (32) is equipped with a pressure reducing circular plate (33). Several exhaust holes (34) are evenly opened on the inner wall of the pressure reducing circular plate (33). The bottom of the exhaust holes (34) has a rounded corner structure.

5. The dry-type transformer production equipment as described in claim 3, characterized in that, The buffer tube (16) is equipped with several removable buffer perforated plates (31). The buffer perforated plates (31) are coaxially arranged with the buffer tube (16), and the buffer perforated plates (31) are equidistantly arranged inside the buffer tube (16).

6. The dry-type transformer production equipment as described in claim 3, characterized in that, The top of the mobile platform (13) is provided with a mounting frame (21), and an electric push rod (20) is vertically provided on the mounting frame (21). Side dust removal plates (24) are rotatably provided on both sides of the central dust removal plate (15). Several side nozzles (25) are provided on the output side of the side dust removal plate (24). A connecting pipe (26) is provided between the input side of the side dust removal plate (24) and the side wall of the air inlet pipe (18). A control valve (27) is provided on the outer wall of the connecting pipe (26).

7. The dry-type transformer production equipment as described in claim 6, characterized in that, The side dust removal plate (24) is inclined downward from one end near the middle dust removal plate (15) to the end away from the middle dust removal plate (15).

8. The dry-type transformer production equipment as described in claim 7, characterized in that, A connecting rod (23) is rotatably mounted on the top of the side dust removal plate (24), and an installation rod (22) is rotatably connected to the top of the connecting rod (23). The end of the installation rod (22) is fixedly connected to the side wall of the protruding end of the electric push rod (20).

9. The dry-type transformer production equipment as described in claim 5, characterized in that, A blocking post (30) is slidably provided in the middle of several buffer plates (31), the top of the blocking post (30) extends to the outside of the buffer tube (16) and is fixedly connected to the protruding end of the electric push rod (20).

10. The dry-type transformer production equipment as described in claim 9, characterized in that, The bottom wall of the blocking column (30) corresponds to the bottom wall of the lowest set of buffer orifice plates (31).

Images