An oil injection device for transformer processing

Abstract

The utility model relates to transformer processing is with oil injection device technical field especially, a kind of oil injection device for transformer processing, including device ontology, the device ontology is provided with connecting mechanism, the connecting mechanism includes the material extraction subassembly being arranged in the top of the device ontology, the left section of the device ontology is provided with adjusting assembly, and the adjusting assembly is connected with oil injection subassembly;The oil injection subassembly includes limit frame, oil injection tank is fixedly installed in the inner wall top of the limit frame. By controlling the rotation angle of rotating lever, the movement of driving rack plate is controlled, the stroke of oil plug is adjusted, and the oil injection amount is accurately adjusted;Driving threaded rotating lever two control horizontal movement, realize two-dimensional coordinate accurate positioning of oil injection subassembly, thereby realizing high-precision control of oil injection position error;Compared with the traditional oil injection device, the position of oil injection nozzle needs to be adjusted manually, and the amount of oil injection fluctuates, which causes the problem of insulation performance decline, significantly improves the stability of transformer manufacturing quality.

Description

Technical Field

[0001] This utility model relates to the technical field of oil injection devices for transformer processing, and in particular to an oil injection device for transformer processing. Background Technology

[0002] As a core device in power transmission systems that performs voltage conversion and energy distribution, the manufacturing process of transformers directly affects the reliability and stability of power grid operation. In the transformer manufacturing process, the injection of insulating oil is one of the key steps: insulating oil not only enhances the insulation performance of the windings and core, but also achieves efficient heat dissipation through thermal convection, playing a decisive role in the long-term stable operation of the transformer.

[0003] Traditional transformer oil filling devices face numerous technical bottlenecks in practical applications. Early oil filling equipment often used manual valves to control the oil flow rate. Due to human error, the oil volume was difficult to control precisely, easily leading to insufficient oil filling resulting in decreased insulation performance or excessive oil filling causing waste. Although some devices were equipped with mechanical adjustment structures, the position adjustment of the oil filling nozzle still required manual movement or simple mechanical positioning. When dealing with differences in the oil filling port positions of different transformer models, repeated disassembly and adjustment were necessary, resulting in low production efficiency. Based on this, an oil filling device for transformer processing was proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an oil injection device for transformer processing, which solves the problems of low position adjustment efficiency and poor oil injection accuracy of traditional oil injection devices.

[0005] To solve the above technical problems, the present invention provides the following technical solution: an oil injection device for transformer processing, comprising a device body, the device body being provided with a connecting mechanism, the connecting mechanism including a material extraction component disposed on the top of the device body, an adjustment component disposed on the left section of the device body, and an oil injection component connected to the adjustment component;

[0006] The adjustment assembly includes a fixed frame 1 fixedly connected to the top left side of the device body. A longitudinal motor is fixedly installed on the top of the fixed frame 1. A threaded rotating rod 1 is fixedly connected to the output end of the longitudinal motor. A traction block 1 is threadedly connected to the outer wall of the threaded rotating rod 1. A fixed frame 2 is fixedly connected to the outer end of the traction block 1. A transverse motor is fixedly installed to the outer end of the fixed frame 2. A threaded rotating rod 2 is fixedly connected to the output end of the transverse motor. A traction block 2 is threadedly connected to the outer wall of the threaded rotating rod 2.

[0007] The oil injection assembly includes a limiting frame, an oil injection tank is fixedly installed on the top of the inner wall of the limiting frame, a connecting joint is provided at the right end of the oil injection tank, a limiting bracket is fixedly connected to the top of the inner wall of the oil injection tank, a rack plate is slidably connected to the inner wall of the limiting port opened in the inner wall of the limiting bracket, an oil plug is fixedly connected to the bottom of the rack plate, a meshing gear is meshed on the front of the rack plate, and a rotating rod is fixedly connected to the inner wall of the meshing gear.

[0008] A further improvement is that the material extraction assembly includes an oil storage tank fixedly installed on the top of the device body. A control panel is fixedly installed on the front of the oil storage tank. A feeding port is connected to the top of the oil storage tank. A pump is connected to the top of the oil storage tank. A connecting pipe is connected to one end of the top of the pump. An end cap is connected to the other end of the connecting pipe. A transfer tank is fixedly installed on the top of the oil storage tank. A filter plate is provided on the inner wall of the middle section of the transfer tank. A connecting pipe is connected to the back of the transfer tank.

[0009] A further improvement is that the filter plate has three layers from top to bottom, with pore sizes of 50μm, 20μm and 5μm from top to bottom, and is fixed to the inner wall of the transfer tank by a 20mm layer spacing through a slot.

[0010] A further improvement is that the limiting frame is fixedly connected to the bottom of the second traction block, and the connecting joint is connected to the inner wall of the right side of the limiting frame; the top of the limiting frame is fixedly connected to the bottom of the second traction block, and an oil filling tank is fixedly installed on the top of the inner wall; the right end of the oil filling tank is connected to the second connecting pipe through the connecting joint to receive the clean oil filtered by the transfer tank.

[0011] A further improvement is that the end cap is fixedly installed on the top of the transfer tank, and the other end of the second connecting pipe is connected to the connecting joint; the top of the transfer tank is sealed to the first connecting pipe through the end cap, and the filter plates are arranged parallel to the axial direction on the inner wall of the middle section. The filter plates are three layers of filter plates, which are fixed to the inner wall of the transfer tank through a slot structure, with a layer spacing of 20mm; the first layer of filter plates is 50μm and installed at an angle of 15°, the second layer is 20μm and the last layer is installed horizontally.

[0012] A further improvement is that the first traction block is slidably connected to the inner wall of the first fixed frame, and the second traction block is slidably connected to the top of the inner wall of the second fixed frame. When the longitudinal motor is powered on, the first threaded rod rotates and drives the first traction block to move vertically in a straight line along the slide groove of the first fixed frame, thereby adjusting the height position of the oil injection component. The second fixed frame is horizontally fixed to the outer end of the first traction block, and a horizontal slide groove is opened on the top of its inner wall, which is slidably connected to the second traction block.

[0013] A further improvement is that the rotating rod is rotatably connected to the limiting frame and the inner wall of the oil filling tank, and the oil plug is used to abut against the bottom of the inner wall of the oil filling tank; the rotating rod is fixedly connected to the inner wall of the meshing gear, and the two ends of the rotating rod are rotatably connected to the inner wall of the limiting frame and the inner wall of the oil filling tank respectively. The rotating rod can be supported by bearings to reduce rotational resistance, and its outer end can be connected to a servo motor. The servo motor is a commercially available motor that drives rotation; when the rotating rod is rotated directly, the rotating rod rotates clockwise when oil needs to be added, and the meshing gear rotates synchronously and pushes the rack plate to slide upward along the limiting port of the limiting frame.

[0014] By means of the above technical solution, this utility model provides an oil injection device for transformer processing, which has at least the following beneficial effects:

[0015] 1. This utility model includes an adjustment component and an oil injection component. The oil injection component employs a rack and pinion transmission structure with a rack plate, meshing gears, and a rotating rod. By controlling the rotation angle of the rotating rod, the movement of the rack plate is controlled, thus adjusting the stroke of the oil plug and ensuring precise adjustment of the oil injection volume. The adjustment component adopts a dual-axis adjustment component with a longitudinal motor and a transverse motor working in tandem. The longitudinal motor drives a threaded rotating rod one to control vertical movement, and the transverse motor drives a threaded rotating rod two to control horizontal movement, achieving precise two-dimensional coordinate positioning of the oil injection component and thus achieving high-precision control of the oil injection position error. Compared with traditional oil injection devices that require manual adjustment of the oil injection nozzle position and experience fluctuations in oil injection volume, leading to a decrease in insulation performance, this significantly improves the stability of transformer manufacturing quality.

[0016] 2. This utility model adopts a three-layer gradient pore size filter plate, combined with an oil plug of piston-type oil injection structure, which can effectively intercept particulate impurities in the oil. The oil plug stroke is precisely controlled by the rotating rod to achieve precise adjustment of the minimum oil injection volume. Compared with the traditional valve control method, the minimum oil injection volume is improved in control accuracy. It is particularly suitable for the oil injection process requirements of miniaturized and precision transformers, and reduces the transformer internal discharge failure rate caused by impurity residue. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the inclined structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the oblique side structure of this utility model;

[0022] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Device body; 2. Connecting mechanism; 21. Material extraction assembly; 211. Oil storage tank; 212. Control panel; 213. Feeding port; 214. Pump; 215. Connecting pipe one; 216. End cap; 217. Transfer tank; 218. Filter plate; 219. Connecting pipe two; 22. Adjusting assembly; 221. Fixing frame one; 222. Longitudinal motor; 223. Threaded rotating rod one; 224. Traction block one; 225. Fixing frame two; 226. Transverse motor; 227. Threaded rotating rod two; 228. Traction block two; 23. Oil injection assembly; 231. Limiting frame; 232. Oil injection tank; 233. Connecting joint; 234. Limiting frame; 235. Rack plate; 236. Oil plug; 237. Meshing gear; 238. Rotating rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Traditional oil injection devices suffer from low position adjustment efficiency and poor oil injection accuracy. This embodiment provides an oil injection device for transformer manufacturing. Please refer to [reference needed]. Figures 1-4 An embodiment provides an oil injection device for transformer processing, including a device body 1, a connecting mechanism 2, a material extraction component 21 disposed on the top of the device body 1, an adjustment component 22 disposed on the left section of the device body 1, and an oil injection component 23 connected to the adjustment component 22.

[0027] The adjustment assembly 22 includes a fixed frame 221 fixedly connected to the top left side of the device body 1. A longitudinal motor 222 is fixedly installed on the top of the fixed frame 221. A threaded rotating rod 223 is fixedly connected to the output end of the longitudinal motor 222. A traction block 224 is threadedly connected to the outer wall of the threaded rotating rod 223. A fixed frame 225 is fixedly connected to the outer end of the traction block 224. A transverse motor 226 is fixedly installed to the outer end of the fixed frame 225. A threaded rotating rod 227 is fixedly connected to the output end of the transverse motor 226. A traction block 228 is threadedly connected to the outer wall of the threaded rotating rod 227.

[0028] The oil filling assembly 23 includes a limiting frame 231. An oil filling tank 232 is fixedly installed on the top of the inner wall of the limiting frame 231. A connecting joint 233 is provided at the right end of the oil filling tank 232. A limiting bracket 234 is fixedly connected to the top of the inner wall of the oil filling tank 232. A rack plate 235 is slidably connected to the inner wall of the limiting port opened in the inner wall of the limiting bracket 234. An oil plug 236 is fixedly connected to the bottom of the rack plate 235. A meshing gear 237 is meshed on the front of the rack plate 235. A rotating rod 238 is fixedly connected to the inner wall of the meshing gear 237.

[0029] In this embodiment, the adjustment component 22 achieves precise positioning of the oil injection component 23 in two-dimensional space through a dual-axis drive structure of longitudinal and transverse axes. The first fixing bracket 221 is vertically fixed to the top left side of the device body 1, and its inner wall has a vertical sliding groove that is slidably connected to the first traction block 224. When the longitudinal motor 222 is powered on, the threaded rod 223 rotates and drives the first traction block 224 to move vertically in a straight line along the sliding groove of the first fixing bracket 221, thereby adjusting the height position of the oil injection component 23. The second fixing bracket 225 is horizontally fixed to the first traction block 224 along with the first fixing bracket 221. At the outer end, a horizontal groove is opened on the top of the inner wall, which is slidably connected to the second traction block 228; the horizontal motor 226 and the vertical motor 222 are fixedly installed at the outer end of the second fixed frame 225, and their output ends are fixedly connected to the second threaded rotating rod 227; after the horizontal motor 226 is started, the second threaded rotating rod 227 rotates and drives the second traction block 228 to move horizontally in a straight line along the groove of the second fixed frame 225; through the coordinated control of the vertical motor 222 and the horizontal motor 226, the second traction block 228 can drive the oil injection component 23 to move directly above the target oil injection port, so as to achieve precise two-dimensional coordinate positioning.

[0030] The oil injection assembly 23 achieves precise control of the oil injection volume through a gear and rack transmission structure. The limiting frame 231 is a rectangular metal frame, and its top is fixedly connected to the bottom of the second traction block 228. The oil injection tank 232, a cylindrical metal tank, is fixedly installed on the top of its inner wall. The right end of the oil injection tank 232 is connected to the second connecting pipe 219 through the connecting joint 233 to receive the clean oil filtered by the transfer tank 217. The top of its inner wall is fixedly connected to the inverted U-shaped metal frame of the limiting bracket 234. The inner wall of the limiting bracket 234 has a vertical limiting opening with a width equal to that of the rack plate 235. Thickness matching ensures that the rack plate 235 can only slide vertically. The rack plate 235 is slidably connected to the limiting port of the limiting frame 234. Its bottom is fixedly connected to the oil plug 236 with the inner diameter of the oil filling tank 232, and its top is engaged with the meshing gear 237. The inner wall of the meshing gear 237 is fixedly connected to the rotating rod 238. The two ends of the rotating rod 238 are respectively rotatably connected to the inner walls of the limiting frame 231 and the oil filling tank 232. It can be supported by bearings to reduce rotational resistance. Its outer end can be connected to a servo motor to drive rotation, or it can be rotated directly. The servo motor adopts a commercially available motor with a rated torque ≥3.0 N·m and a rated speed ≥3000 rpm. If the output torque and speed are lower than these, the oil filling control error will increase. The servo motor is not shown in the figure. The connected oil plug 236 seals the bottom discharge port of the connected oil filling tank 232 by its own gravity and the drive of the rack plate 235. The bottom of the oil plug 236 is fitted with a fluororubber sealing ring, which is interference-fitted with the inner wall of the oil filling tank 232. The sealing ring can withstand a pressure of 1.6 MPa.

[0031] If a servo motor is fixedly connected to the outer end of the rotating rod 238, the output shaft of the servo motor receives pulse signals through the PLC controller to control the rotation angle of the rotating rod 238. In the oil suction stage: the PLC sends a positive pulse signal → the servo motor rotates clockwise → the rotating rod 238 drives the meshing gear 237 to push the rack plate 235 upward; in the oil injection stage: the PLC sends a reverse pulse signal → the servo motor rotates counterclockwise → the rack plate 235 moves downward to squeeze the oil.

[0032] The PLC uses existing commercially available equipment, including output ports Y0 and Y01, and input port X001. The PLC sends pulse signals (PULSE) to the driver of the longitudinal motor 222 via output port Y0, controlling the motor's rotation angle, i.e., the height position of the oil injection assembly 23. Specifically, the PLC sends a number of pulses → the driver converts this into the rotation angle of the longitudinal motor 222 → this is converted into the vertical displacement of the traction block 224 via the threaded rod 223. The PLC sends a direction signal (DIRECTION) to the transverse motor 226 via output port Y01, controlling the rotation direction of the transverse motor 226, i.e., the horizontal movement direction of the oil injection assembly 23. Specifically, the level of the output at output port Y01 determines whether the transverse motor 226 rotates forward or backward, which in turn determines whether the traction block 228 moves left or right. A level sensor is installed in the oil tank 211, which monitors the oil level in the tank 211 in real time and feeds back the status to the PLC's input port X001. When input port X001 receives a high level, the PLC triggers an alarm and pauses oil injection.

[0033] When oil filling is required, the rotating rod 238 rotates clockwise under the action of the drive motor, the meshing gear 237 rotates synchronously and pushes the rack plate 235 to slide upward along the limiting port of the limiting frame 234, and the oil plug 236 moves upward accordingly, forming a negative pressure inside the oil filling tank 232, and the oil is drawn into the oil filling tank 232 through the connecting joint 233; when the oil in the oil filling tank 232 reaches the set amount, the rotating rod 238 rotates counterclockwise, the meshing gear 237 drives the rack plate 235 to slide downward, and the oil plug 236 squeezes the oil, so that the oil is injected into the transformer through the oil outlet at the bottom of the oil filling tank 232; by controlling the rotation angle of the rotating rod 238, such as moving the rack plate 235 a corresponding distance for each rotation, the stroke of the oil plug 236 can be precisely adjusted, thereby controlling the amount of oil filled at one time.

[0034] Specifically, the PLC outputs pulse signals to control the servo motor, driving the rotating rod 238 to rotate once every 1000 pulses, pushing the rack plate 235 to rise by 94.2mm (the meshing gear 237 has a module of 1.5 and 20 teeth, and the rack plate 235 has a pitch of 4.71mm).

[0035] The formula for calculating the amount of oil injected is: Q = π × (D / 2) 2 ×S;

[0036] The relationship between the oil plug stroke (S) and the gear rotation angle (θ) is: S=(N×P×θ) / 360°;

[0037] The direct relationship between the oil injection quantity Q and the gear rotation angle θ is: Q=π×(D / 2) 2 ×(N×P×θ) / 360°.

[0038] Where D is the inner diameter of the oil tank 232 (60mm), S is the displacement of the rack plate 235 (i.e., the oil plug stroke), N is the number of teeth of the meshing gear 237 (20 here), P is the rack pitch (P = π × module = 4.71mm), and θ is the rotation angle of the rotating rod 238.

[0039] When θ = 360°, Q = 266.4 mL; when 100 mL of oil needs to be injected, θ = 135.7°; if the servo motor requires 1000 pulses per revolution (1 pulse = 0.36°), then 100 mL of oil injection corresponds to approximately 377 pulses. By controlling the rotation angle θ of the lever 238 (e.g., the number of PLC pulses), the oil injection quantity Q can be directly adjusted, thereby achieving precise control of the oil injection quantity.

[0040] In this embodiment 1, the oil tank 232 has an inner diameter of 60mm, a total height of 140mm, an effective stroke height of 94.2mm, and a maximum single oil filling volume of 266.4mL. For the need for excessive oil filling, it can be achieved through multiple strokes.

[0041] Furthermore, the limiting frame 231 is fixedly connected to the bottom of the second traction block 228, and the connecting joint 233 is connected to the inner wall on the right side of the limiting frame 231; the first traction block 224 is slidably connected to the inner wall of the first fixing frame 221, and the second traction block 228 is slidably connected to the top of the inner wall of the second fixing frame 225; the rotating rod 238 is rotatably connected to the inner wall of the limiting frame 231 and the oil tank 232, and the oil plug 236 is used to abut against the bottom of the inner wall of the oil tank 232.

[0042] Furthermore, the rack plate 235 is slidably connected within the limiting port of the limiting frame 234. Its bottom is fixedly connected to the oil plug 236, and its outer diameter matches the inner diameter of the oil filling tank 232. Its top meshes head-on with the meshing gear 237. The inner wall of the meshing gear 237 is fixedly connected to the rotating rod 238. The two ends of the rotating rod 238 are rotatably connected to the inner walls of the limiting frame 231 and the oil filling tank 232, respectively, and can be supported by bearings to reduce rotational resistance. In actual use, the rack plate 235 and the limiting frame 234 are made of wear-resistant materials and can also be coated with lubricating oil for lubrication. The rack plate 235 is made of surface-hardened steel, such as carburized alloy steel or hard chrome-plated medium carbon steel; the limiting frame 234 is made of integrally quenched high carbon steel, such as bearing steel or tool steel.

[0043] Example 2

[0044] Based on Embodiment 1, the material extraction assembly 21 includes an oil storage tank 211 fixedly installed on the top of the device body 1. A control panel 212 is fixedly installed on the front of the oil storage tank 211. A feeding port 213 is connected to the top of the oil storage tank 211. A pump 214 is connected to the top of the oil storage tank 211. A connecting pipe 215 is connected to one end of the top of the pump 214. The other end of the connecting pipe 215 passes through an end cover 216 and connects to a transfer tank 217. The transfer tank 217 is fixedly installed on the top of the oil storage tank 211. A filter plate 218 is provided on the inner wall of the middle section of the transfer tank 217. A connecting pipe 219 is connected to the back of the transfer tank 217. The rated pressure of the pump 214 is generally 0.8 MPa.

[0045] In this embodiment, the pumping assembly 21 serves as the core of the oil supply, undertaking the functions of storing, pumping, and cleaning pretreatment of insulating oil. It mainly consists of an oil storage tank 211, a pump 214, a transfer tank 217, and filter plates 218. The oil storage tank 211 is fixedly installed on the top of the device body 1 and is used to store the insulating oil to be injected. The top of the tank is replenished with oil through the feed port 213. The control panel 212 on the front is used to set the operating parameters of the pump 214. After the pump 214 is started, it pumps the oil in the oil storage tank 211 into the transfer tank 217 through the connecting pipe 215. The top of the transfer tank 217 is sealed to the connecting pipe 215 through the end cap 216. Three layers of filter plates 218 are arranged parallel to each other along the axial direction on the inner wall of the middle section. After the oil enters the transfer tank 217, it passes through the three layers of filter plates 218 in sequence under the action of gravity.

[0046] Furthermore, the filter plate 218 has three layers from top to bottom, with pore sizes of 50μm, 20μm and 5μm from top to bottom, and is fixed to the inner wall of the transfer tank 217 by a 20mm layer spacing through a slot; the end cap 216 is fixedly installed on the top of the transfer tank 217, and the other end of the connecting pipe 219 is connected to the connecting joint 233.

[0047] Furthermore, the oil injection parameters are set via the control panel 212; the pumping assembly 21 starts the pump 214 to pump the oil in the oil storage tank 211 into the transfer tank 217 to complete the three-stage filtration; the adjusting assembly 22, according to the preset coordinates, drives the traction block 228 via the longitudinal motor 222 and the transverse motor 226 to move the oil injection assembly 23 directly above the transformer oil injection port; the oil injection assembly 23 controls the reciprocating motion of the oil plug 236 through the transmission of the rotating rod 238 and the meshing gear 237 to achieve precise oil injection.

[0048] Working principle: The material extraction component 21 serves as the core of the oil supply, undertaking the functions of storing, pumping, and cleaning pretreatment of insulating oil. The oil storage tank 211 is used to store the insulating oil to be injected, and the top of it is replenished with oil through the feeding port 213. The control panel 212 on the front is used to set the operating parameters of the pump 214. After the pump 214 is started, the oil in the oil storage tank 211 is pumped into the transfer tank 217 through the connecting pipe 215 and the oil-resistant rubber hose. The top of the transfer tank 217 is sealed to the connecting pipe 215 through the end cap 216. The filter plates 218 are arranged parallel to the axial direction on the inner wall of the middle section. The filter plates 218 are three-layer filter plates and are fixed to the inner wall of the transfer tank 217 through the slot structure. The filter plates are spaced 20mm apart; the first layer of 50μm filter plates is installed at a 15° angle to reduce the probability of clogging, with a filtration flow rate range of 0.5m / s-1.0m / s. The second layer (20μm) and the final layer (5μm) are installed horizontally. After the oil enters the transfer tank 217, it passes through three layers of filter plates 218 under gravity: the first layer (50μm) filters out larger metal particles and fibrous impurities, the second layer (20μm) filters out small debris, and the final layer (5μm) removes colloids and nano-sized particles, ensuring that the oil cleanliness meets the transformer oil filling standard. The filtered clean oil is then transported to the connection joint 233 of the oil filling assembly 23 via the connecting pipe 219, completing the oil pretreatment and transfer. The connecting pipe 219 is an oil-resistant steel pipe, typically made of stainless steel 304, with an outer diameter of 12mm, a wall thickness of 1.5mm, and a yield strength of ≥205MPa, to ensure that no plastic deformation occurs under the maximum working pressure of the pump 214.

[0049] The adjustment component 22, through the coordinated control of the longitudinal motor 222 and the transverse motor 226, allows the traction block 228 to drive the oil injection component 23 to move directly above the target oil injection port, achieving precise two-dimensional coordinate positioning.

[0050] The oil injection assembly 23 achieves precise control of the oil injection volume through a gear and rack transmission structure. When the rotating rod 238 is rotated directly, and oil injection is required, the rotating rod 238 rotates clockwise, the meshing gear 237 rotates synchronously and pushes the rack plate 235 to slide upward along the limiting port of the limiting frame 234, and the oil plug 236 moves upward accordingly. The bottom of the oil injection tank 232 is sealed to the port of the container to be injected, and a negative pressure is formed inside the connected oil injection tank 232. The oil is drawn into the oil injection tank 232 through the connecting joint 233. When the oil in the oil injection tank 232 reaches the set amount, the rotating rod 238 rotates counterclockwise, the meshing gear 237 drives the rack plate 235 to slide downward, and the oil plug 236 squeezes the oil, so that the oil is injected into the transformer through the oil outlet at the bottom of the oil injection tank 232. By controlling the rotation angle of the rotating rod 238, such as moving the rack plate 235 a corresponding distance for each rotation, the stroke of the oil plug 236 can be precisely adjusted, thereby controlling the amount of oil injected at one time. It should be noted that a check valve (opening pressure 0.05MPa) is installed at the oil outlet to prevent oil backflow.

[0051] When the device is running, the oil injection parameters are first set through the control panel 212; the pumping component 21 starts the pump 214 to pump the oil in the oil storage tank 211 into the transfer tank 217 to complete the three-stage filtration; the adjusting component 22 drives the traction block 228 through the longitudinal motor 222 and the transverse motor 226 according to the preset coordinates, and moves the oil injection component 23 to directly above the transformer oil injection port; the oil injection component 23 controls the reciprocating motion of the oil plug 236 through the transmission of the rotating rod 238 and the meshing gear 237 to achieve precise oil injection; the entire process is monitored in real time through the control panel 212 for oil flow, oil injection pressure and oil injection position to ensure that the oil injection process meets the high precision requirements of transformer manufacturing.

[0052] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oiling device for transformer processing, comprising a device body (1), characterized in that: The device body (1) is provided with a connecting mechanism (2), the connecting mechanism (2) includes a material extraction component (21) provided on the top of the device body (1), the left section of the device body (1) is provided with an adjustment component (22), and the adjustment component (22) is connected to an oil injection component (23). The adjustment assembly (22) includes a fixed frame (221) fixedly connected to the top left side of the device body (1). A longitudinal motor (222) is fixedly installed on the top of the fixed frame (221). A threaded rotating rod (223) is fixedly connected to the output end of the longitudinal motor (222). A traction block (224) is threadedly connected to the outer wall of the threaded rotating rod (223). A fixed frame (225) is fixedly connected to the outer end of the traction block (224). A transverse motor (226) is fixedly installed to the outer end of the fixed frame (225). A threaded rotating rod (227) is fixedly connected to the output end of the transverse motor (226). A traction block (228) is threadedly connected to the outer wall of the threaded rotating rod (227). The oil injection assembly (23) includes a limiting frame (231). An oil injection tank (232) is fixedly installed on the top of the inner wall of the limiting frame (231). A connecting joint (233) is provided at the right end of the oil injection tank (232). A limiting bracket (234) is fixedly connected to the top of the inner wall of the oil injection tank (232). A rack plate (235) is slidably connected to the inner wall of the limiting port opened on the inner wall of the limiting bracket (234). An oil plug (236) is fixedly connected to the bottom of the rack plate (235). A meshing gear (237) is engaged on the front of the rack plate (235). A rotating rod (238) is fixedly connected to the inner wall of the meshing gear (237).

2. The oil injection device for transformer processing according to claim 1, characterized in that: The material extraction assembly (21) includes an oil storage tank (211) fixedly installed on the top of the device body (1). A control panel (212) is fixedly installed on the front of the oil storage tank (211). A feeding port (213) is connected to the top of the oil storage tank (211). A pump (214) is connected to the top of the oil storage tank (211). A connecting pipe (215) is connected to one end of the top of the pump (214). An end cap (216) is connected to the other end of the connecting pipe (215). A transfer tank (217) is fixedly installed on the top of the oil storage tank (211). A filter plate (218) is provided on the inner wall of the middle section of the transfer tank (217). A connecting pipe (219) is connected to the back of the transfer tank (217).

3. The oil filling device for transformer processing according to claim 2, characterized in that: The filter plate (218) has three layers from top to bottom, with pore sizes of 50μm, 20μm and 5μm from top to bottom, and is fixed to the inner wall of the transfer tank (217) by a 20mm layer spacing through a slot.

4. The oil filling device for transformer processing according to claim 2, characterized in that: The limiting frame (231) is fixedly connected to the bottom of the second traction block (228), and the connecting joint (233) is connected to the inner wall of the right side of the limiting frame (231).

5. The oil filling device for transformer processing according to claim 2, characterized in that: The end cap (216) is fixedly installed on the top of the transfer tank (217), and the other end of the connecting pipe (219) is connected to the connecting joint (233).

6. The oil filling device for transformer processing according to claim 1, characterized in that: The traction block one (224) is slidingly connected to the inner wall of the fixed frame one (221), and the traction block two (228) is slidingly connected to the top of the inner wall of the fixed frame two (225).

7. The oil filling device for transformer processing according to claim 1, characterized in that: The rotating rod (238) is rotationally connected to the inner wall of the limiting frame (231) and the oiling tank (232), and the oil plug (236) is used for abutting the bottom of the inner wall of the oiling tank (232).

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