Evaluation device for the impregnation speed of generator stator bar wrapping during VPI process

Abstract

The utility model relates to generator component manufacturing detection technical field discloses a generator stator bar package binding piece's evaluation device that impregnation is slow or fast in VPI process, including jar body, vacuum glue solution storage mechanism, second heating temperature control system, glue solution feed assembly, impregnation monitoring system and control system, the detachable connection of jar body top has sealing cover, jar body bottom installs support and blowdown assembly, and jar body places in the wire bar package binding piece, jar body is connected with the vacuum system and pressurizing system of pumping, vacuum glue solution storage mechanism installs first heating temperature control system, second heating temperature control system installs on jar body, impregnation monitoring system includes liquid level monitoring assembly, penetration monitoring assembly and visual impregnation observation assembly. The utility model can evaluate stator bar package binding piece's impregnation slow or fast in VPI process in real time, realizes the accurate detection and analysis to the resin impregnation speed in VPI process, promotes wire bar manufacturing quality.

Description

Technical Field

[0001] This utility model relates to the field of generator component manufacturing and testing technology, and in particular to an evaluation device for the immersion speed of generator stator bar wrapping components during the VPI process. Background Technology

[0002] Vacuum pressure impregnation (VPI) is a core step in the insulation treatment of generator stator bars. It uses a vacuum environment to remove air from the inside of the bar wrapping and applies pressure to promote full resin penetration, directly affecting the insulation performance and service life of the bars. Impregnation speed is a key indicator of the VPI process; too slow a speed leads to low production efficiency and localized insufficient resin, while too fast a speed may cause uneven resin distribution and residual air bubbles.

[0003] While existing equipment can perform operations such as heating, vacuuming, and pressurizing in the VPI process, it lacks real-time monitoring and quantitative evaluation methods for the resin penetration rate during impregnation. It cannot accurately capture the impregnation differences in different parts of the bar, making it difficult to optimize process parameters in a targeted manner.

[0004] To address this, an evaluation device is proposed to measure the immersion speed of generator stator bar wrapping components during the VPI process. Utility Model Content

[0005] The purpose of this invention is to provide an evaluation device for the immersion speed of generator stator bar wrapping components during the VPI process, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides an evaluation device for the immersion speed of generator stator bar wrapping components during the VPI process, comprising: The tank body has a detachable sealing cover plate on the top, a support and a sewage discharge assembly installed at the bottom, a wire rod wrapping component placed inside the tank body, and a vacuum system and a pressurization system connected to the tank body. A vacuum adhesive storage mechanism, wherein a first heating temperature control system is installed on the vacuum adhesive storage mechanism; A second heating and temperature control system is installed on the tank body; The adhesive feeding assembly has one end connected to the vacuum adhesive storage mechanism and the other end connected to the inner cavity of the tank. An impregnation monitoring system, comprising a liquid level monitoring component, a permeation monitoring component, and a visual impregnation observation component; the liquid level monitoring component, the permeation monitoring component, and the visual impregnation observation component are all installed on the tank body; The control system includes a vacuum system, a pressurization system, a first heating and temperature control system, a vacuum adhesive storage mechanism, a second heating and temperature control system, an adhesive feeding assembly, a liquid level monitoring assembly, a penetration monitoring assembly, and a visual immersion observation assembly, all of which are electrically connected to the control system.

[0007] According to the evaluation device for the immersion speed of generator stator bar wrapping components in VPI process provided by this utility model, a number of spaced pads are installed at the bottom of the inner wall of the tank, a number of partitions are detachably connected to the inner side wall of the tank, a flow guide groove is opened at the bottom of the inner wall of the tank, and a gap is provided between the partitions and the pads and the flow guide groove. The sewage discharge assembly includes several sewage discharge pipes, which are fixedly installed at the bottom of the tank and communicate with the gap. A sewage discharge valve electrically connected to the control system is installed on the sewage discharge pipe.

[0008] According to the evaluation device for the immersion speed of generator stator bar wrapping components during VPI process provided by this utility model, the vacuum adhesive storage mechanism includes: An adhesive storage tank, wherein a first vacuum pressure gauge is installed on the adhesive storage tank, and a first heating temperature control system is installed on the outer wall of the adhesive storage tank; A first vacuum pump is connected to the adhesive storage tank via a first vacuum pipeline; A mixing device, wherein the mixing device is installed inside the adhesive storage tank; The first vacuum pump and the stirring device are both electrically connected to the control system; one end of the adhesive feeding assembly is connected to the inner cavity of the adhesive storage tank.

[0009] According to the evaluation device for the immersion speed of generator stator bar wrapping components during VPI process provided by this utility model, the first heating temperature control system includes: A first temperature controller is installed on top of the adhesive storage tank; A heating belt is wound around the outer wall of the adhesive storage tank, and the heating belt is covered with an insulating cotton layer. A first temperature sensor is installed inside the adhesive storage tank; The heating belt and the first temperature sensor are both electrically connected to the first temperature controller, and the first temperature controller is electrically connected to the control system.

[0010] According to the evaluation device for the immersion speed of generator stator bar wrapping components in VPI process provided by this utility model, the liquid level monitoring component includes a plurality of ultrasonic liquid level sensors, and the plurality of ultrasonic liquid level sensors are installed at intervals on the inner wall of the tank. The permeation monitoring component includes several miniature pressure sensors and several resistive humidity sensors, which are respectively embedded at intervals on the wire rod wrapping component. The visual immersion observation assembly includes a transparent observation window, an LED lighting device, and an industrial camera. The transparent observation window is installed on the top surface of the sealing cover, the LED lighting device is located on one side of the transparent observation window, and the industrial camera is fixedly installed on the top of the transparent observation window via a connecting bracket. The ultrasonic level sensor, the plurality of miniature pressure sensors, the plurality of resistive humidity sensors, the transparent observation window, the LED lighting equipment, and the industrial camera are all electrically connected to the control system.

[0011] According to the evaluation device for the immersion speed of generator stator bar wrapping components in the VPI process provided by this utility model, the adhesive feeding assembly includes a feeding pipe, on which a solenoid valve and a diaphragm pump are installed. The solenoid valve and the diaphragm pump are both electrically connected to the control system. One end of the feeding pipe is fixedly connected to and communicates with the adhesive storage tank, and the other end is equipped with several branch pipes, which are respectively fixedly connected to and communicate with the tank body.

[0012] According to the evaluation device for the immersion speed of generator stator bar wrapping components in the VPI process provided by this utility model, the vacuum system includes a second vacuum pump, which is connected to the inner cavity of the tank through a second vacuum pipeline; a second vacuum pressure gauge, a positive pressure gauge, a handwheel and a pressure relief valve are installed on the sealing cover plate. The pressurization system includes an air compressor, which is connected to the inner cavity of the tank via a pressurization pipeline; a pressure regulating valve is installed on the pressurization pipeline. The second heating and temperature control system includes a second thermostat, an electric heating wire, and a second temperature sensor. The second thermostat is installed on the sealing cover plate, the electric heating wire is wound around the outer wall of the tank, the second temperature sensor is installed inside the tank, and the electric heating wire is covered with a rock wool insulation layer and an aluminum protective layer. The electric heating wire and the second temperature sensor are both electrically connected to the second temperature controller, and the second temperature controller, the second vacuum pump, and the air compressor are all electrically connected to the control system.

[0013] According to the evaluation device for the immersion speed of generator stator bar wrapping components in the VPI process provided by this utility model, a handle is installed on the sealing cover plate, and a sealing ring is installed between the sealing cover plate and the tank body.

[0014] According to the evaluation device for the immersion speed of generator stator bar wrapping components during VPI provided by this utility model, vacuum sensors are installed in both the first vacuum pipeline and the second vacuum pipeline, and the vacuum sensors are electrically connected to the control system.

[0015] The present invention discloses the following technical effects: This invention uses a glue feeding assembly to add glue from a vacuum glue storage mechanism into a tank, ensuring the stator bar wrapping components are completely submerged. A liquid level monitoring assembly monitors the glue level rise rate, reflecting the initial impregnation rate of the bar wrapping components. A penetration monitoring assembly monitors local pressure changes and penetration during resin penetration, measuring the impregnation rate differences in different areas of the bar wrapping components. A visual impregnation observation assembly facilitates direct observation and recording of the impregnation process. The impregnation monitoring system allows for real-time evaluation of the stator bar wrapping component's impregnation rate during the VPI process, enabling precise detection and analysis of the resin impregnation rate and improving bar manufacturing quality. This invention enables precise quantitative evaluation of the immersion speed during the VPI process, and can be directly used for process optimization and quality inspection of generator stator bar wrapping components. Its application scope covers the VPI process evaluation of generator stator bars. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure I ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure II ; Figure 3 This is a schematic diagram of the tank structure in this utility model.

[0018] The components include: 1. Tank body; 2. Sealing cover; 3. Baffle plate; 4. Drain valve; 5. Adhesive storage tank; 6. First vacuum pressure gauge; 7. First vacuum pump; 8. Mixing equipment; 9. First temperature controller; 10. Feed pipe; 11. Diaphragm pump; 12. Branch pipe; 13. Second vacuum pump; 14. Second vacuum pressure gauge; 15. Positive pressure gauge; 16. Handwheel; 17. Pressure relief valve; 18. Air compressor; 19. Second temperature controller; 20. Handle. Detailed Implementation

[0019] 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.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Reference Figures 1-3 This utility model provides an evaluation device for the immersion speed of generator stator bar wrapping components during the VPI process, comprising: Tank 1, with a detachable sealing cover 2 on the top of the tank 1, a support and a sewage discharge assembly installed at the bottom of the tank 1, a wire rod wrapping component placed inside the tank 1, and the tank 1 connected to a vacuum system and a pressurization system; A vacuum adhesive storage mechanism, on which a first heating temperature control system is installed; The second heating and temperature control system is installed on tank 1; The adhesive feeding assembly has one end connected to the vacuum adhesive storage mechanism and the other end connected to the inner cavity of the tank 1. The impregnation monitoring system includes a liquid level monitoring component, a permeation monitoring component, and a visual impregnation observation component; all three components are installed on the tank body 1. The control system, vacuum system, pressurization system, first heating and temperature control system, vacuum adhesive storage mechanism, second heating and temperature control system, adhesive feeding assembly, liquid level monitoring assembly, penetration monitoring assembly, and visual impregnation observation assembly are all electrically connected to the control system; the control system adopts a PLC; With this configuration, the present invention adds the adhesive from the vacuum adhesive storage mechanism to the tank 1 through the adhesive feeding component, so that the wire rod wrapping component in the tank 1 is completely immersed in the adhesive. The liquid level monitoring component monitors the rising speed of the adhesive, thereby reflecting the initial impregnation rate of the wire rod wrapping component. The penetration monitoring component monitors the local pressure changes and penetration of the wire rod wrapping component during resin penetration, and measures the difference in impregnation rate in different areas of the wire rod wrapping component. The visual impregnation observation component facilitates intuitive observation and recording of the impregnation process of the wire rod wrapping component. The impregnation monitoring system can evaluate the impregnation speed of the stator wire rod wrapping component in real time during the VPI process, realizing accurate detection and analysis of the resin impregnation speed during the VPI process, which improves the manufacturing quality of the wire rod. This invention enables precise quantitative evaluation of the immersion speed during the VPI process, and can be directly used for process optimization and quality inspection of generator stator bar wrapping components. Its application scope covers the VPI process evaluation of generator stator bars.

[0022] Further optimizing the design, tank 1 adopts a horizontal cylindrical structure made of 304 stainless steel with a wall thickness of 12mm. It possesses mechanical properties with a tensile strength ≥515MPa and a yield strength ≥205MPa, and can withstand instantaneous pressure impacts of 0.8MPa. The internal dimensions are designed as 3000mm in length × 600mm in inner diameter, accommodating stator bar wrapping components with a maximum size of 3000mm in length × 100mm in width × 50mm in thickness, ensuring the bars are completely immersed in epoxy impregnating resin. Four sets of adjustable support feet are welded to the bottom of tank 1. The support feet are made of Q235 steel with a galvanized surface treatment, and the height adjustment range is 100-150mm. They are locked with bolts for easy leveling. The tank has a built-in detachable baffle in the middle. The baffle is made of 304 stainless steel and is 8mm thick. It is connected to the inner wall of the tank through a slot and can divide the space according to the sample length (supporting three specifications: 1000mm, 2000mm and 3000mm), reducing the waste of adhesive when testing short samples (adhesive savings can reach more than 40%).

[0023] The design has been further optimized. The sealing cover 2 adopts a side-opening sliding structure, and the material is the same as that of the tank body 1 (304 stainless steel). The weight is ≤50kg, and it is equipped with 2 sets of manual auxiliary locking devices.

[0024] Further optimization of the scheme: a number of spaced pads are installed on the bottom of the inner wall of tank 1; a number of partitions 3 are detachably connected to the inner side wall of tank 1; a flow guide groove is opened on the bottom of the inner wall of tank 1; and gaps are provided between the partitions 3 and the pads and the flow guide groove. The sewage discharge assembly includes several sewage discharge pipes, which are fixedly installed at the bottom of the tank 1 and connected to the gap. A sewage discharge valve 4 electrically connected to the control system is installed on the sewage discharge pipe. Several glue discharge ports corresponding to the sewage discharge pipes are provided at the bottom of the tank 1. The sewage discharge pipes discharge the glue through a centrifugal pump, and the glue discharge time is ≤30 minutes.

[0025] Further optimization of the design includes a vacuum adhesive storage mechanism comprising: Adhesive storage tank 5, a first vacuum pressure gauge 6 is installed on adhesive storage tank 5, and a first heating temperature control system is installed on the outer wall of adhesive storage tank 5; The first vacuum pump 7 is connected to the adhesive storage tank 5 through the first vacuum pipeline; A mixing device 8 is installed inside the adhesive storage tank 5. The first vacuum pump 7 and the stirring device 8 are both electrically connected to the control system; one end of the adhesive feeding component is connected to the inner cavity of the adhesive storage tank 5.

[0026] Further optimization of the solution: The first heating temperature control system includes: The first temperature controller 9 is installed on top of the adhesive storage tank 5; A heating belt is wrapped around the outer wall of the adhesive storage tank 5, and an insulation cotton layer is provided over the heating belt. The first temperature sensor is installed inside the adhesive storage tank 5. The heating belt and the first temperature sensor are both electrically connected to the first temperature controller 9, and the first temperature controller 9 is electrically connected to the control system.

[0027] Further optimization of the design involves a liquid level monitoring component comprising several ultrasonic liquid level sensors, which are spaced apart and mounted on the inner wall of tank 1. Three sets of non-contact ultrasonic liquid level sensors are installed along the height direction on the inner wall of tank 1. The sensor housings are made of 316L stainless steel with an IP68 protection rating. These sensors can record the resin level rise rate in real time, reflecting the initial impregnation rate of the bar (resolution 0.1 mm / min). The sensors are fixed by brackets, with a 10 mm gap between them and the inner wall of tank 1 to prevent resin adhesion from affecting the measurement.

[0028] The resin permeation monitoring component includes several miniature pressure sensors and several resistive humidity sensors, which are embedded at intervals on the inline bar wrapping component. Miniature pressure sensors and resistive humidity sensors are also embedded at three key locations: the end, middle, and corner of the inline bar wrapping component. The pressure sensors monitor local pressure changes during resin permeation, while the humidity sensors determine whether resin has permeated to that location. Together, they quantify the differences in impregnation rates in different areas. The sensor leads use oil-resistant shielded cables, which pass through sealed connectors to ensure vacuum sealing. The visual immersion observation assembly includes a transparent observation window, an LED lighting device, and an industrial camera. The transparent observation window is installed on the top surface of the sealing cover plate 2, the LED lighting device is located on one side of the transparent observation window, and the industrial camera is fixedly installed on the top of the transparent observation window via a connecting bracket. There are two transparent observation windows, and the perimeter of the observation windows is sealed with fluororubber. LED lighting equipment facilitates direct observation of the resin impregnation process on the bar. An optional high-definition industrial camera records dynamic images of the impregnation process, supporting post-processing playback and analysis.

[0029] The ultrasonic level sensor, several miniature pressure sensors, several resistive humidity sensors, transparent observation window, LED lighting equipment, and industrial camera are all electrically connected to the control system.

[0030] The solution is further optimized. The adhesive feeding assembly includes a feed pipe 10, on which a solenoid valve and a diaphragm pump 11 are installed. Both the solenoid valve and the diaphragm pump 11 are electrically connected to the control system. One end of the feed pipe 10 is fixedly connected to and communicates with the adhesive storage tank 5, and the other end is equipped with several branch pipes 12, which are fixedly connected to and communicate with the tank body 1. A flow sensor is installed on the feed pipe 10. The top of the side wall of tank 1 is equipped with a glue inlet, a diaphragm pump 11, and a flow controller, which can stably dispense glue under vacuum (the vacuum degree is maintained at ≥40Pa during the glue dispensing process). All pipelines in contact with the glue are made of polytetrafluoroethylene or 316L stainless steel to avoid resin corrosion.

[0031] The scheme is further optimized. The vacuum system includes a second vacuum pump 13, which is connected to the inner cavity of the tank 1 through a second vacuum pipeline. A second vacuum pressure gauge 14, a positive pressure gauge 15, a handwheel 16, and a pressure relief valve 17 are installed on the sealing cover plate 2. The second vacuum pump 13 is a rotary vane vacuum pump. A vacuum port is installed on the top of the tank 1, which is connected to the second vacuum pipeline. The pipeline connector is a compression fitting type, which can stably control the vacuum degree inside the tank at 40-100Pa. The time to reach a vacuum degree of 50Pa is ≤60 minutes.

[0032] The pressurization system includes an air compressor 18, which is connected to the inner cavity of the tank 1 via a pressurization pipeline. A pressure regulating valve is installed on the pressurization pipeline. The pressurization pipeline is made of seamless steel pipe, enabling the pressure inside the tank 1 to reach 1 MPa and withstand this pressure long-term (pressure fluctuation ≤ ±0.01 MPa), with a pressurization time of ≤ 60 minutes from atmospheric pressure to 1 MPa. A pressure sensor is installed in the pressurization pipeline to monitor pressure changes in real time and avoid the risk of overpressure.

[0033] The second heating temperature control system includes a second temperature controller 19, an electric heating wire, and a second temperature sensor. The second temperature controller 19 is installed on the sealing cover plate 2. The electric heating wire is wound around the outer wall of the tank body 1. The second temperature sensor is installed inside the tank body 1. The electric heating wire is covered with a rock wool insulation layer and an aluminum protective layer. The electric heating wire and the second temperature sensor are both electrically connected to the second temperature controller 19. The second temperature controller 19, the second vacuum pump 13, and the air compressor 18 are all electrically connected to the control system. The heating range of the electric heating wire is from room temperature to 80℃, with a temperature control accuracy of ±2℃, and the time to raise the temperature from room temperature (25℃) to 80℃ is ≤120 minutes. The temperature sensor welded to the inner wall of tank 1 provides real-time feedback of the temperature inside tank 1 to the second temperature controller 19, forming a closed-loop control.

[0034] The design has been further optimized. A handle 20 is installed on the sealing cover 2, and a sealing ring is installed between the sealing cover 2 and the tank body 1. The sealing ring is made of vacuum-resistant silicone rubber to ensure vacuum sealing performance.

[0035] The scheme was further optimized by installing vacuum sensors in both the first and second vacuum lines, and the vacuum sensors were electrically connected to the control system. Both the first and second vacuum lines are made of 304 stainless steel. Vacuum sensors monitor changes in the vacuum level inside the tank in real time and transmit the data to the control system.

[0036] The method of using this utility model includes: 1. Sample Preparation: Select a generator stator bar wrapping component with dimensions of 3000mm (length) × 100mm (width) × 50mm (thickness) (insulation layer thickness 5mm, material is epoxy glass cloth). After visual inspection to ensure there is no damage or bubbles, fix it to a 316L stainless steel bracket (bracket spacing 2000mm, load capacity ≥50kg) inside tank 1. Drill holes (diameter Φ6mm) at the end (50mm from the end point), middle (1500mm from the end point), and corner (if there is curvature, take the midpoint of the curvature) of the sample, respectively, and embed a miniature pressure sensor and a humidity sensor. The sensor leads pass through the PTFE sealing joint on the side wall of tank 1 and are connected to the control system, ensuring that the vacuum leakage rate at the joint is ≤1Pa・L / s.

[0037] 2. Parameter settings: Vacuum degree 100Pa (vacuuming time 60 minutes), heating temperature 80℃ (heating time 90 minutes, holding time 30 minutes), pressure 0.8MPa (pressure time 40 minutes, holding time 120 minutes), glue flow rate 3L / min (glue amount is based on immersing the sample 50mm), total test time 360 ​​minutes, data sampling frequency 10Hz.

[0038] 3. VPI process and monitoring: 3.1 Vacuum and Heating Stage The vacuum system is started, and the second vacuum pump 13 runs for 60 minutes to reduce the vacuum level inside the tank 1 to 100Pa. At the same time, the heating system is started, and the temperature inside the tank 1 is raised to 80℃ within 90 minutes and kept at that temperature for 30 minutes to remove air from the inside of the bar (the vacuum sensor monitors in real time, and if the vacuum level does not reach the set value, the system automatically extends the vacuuming time, up to a maximum of 90 minutes).

[0039] 3.2 Glue Injection and Liquid Level Monitoring Stage Turn on the diaphragm pump 11 and inject epoxy impregnation resin into the tank 1 at a flow rate of 3L / min. Three sets of liquid level sensors synchronously record the liquid level changes. In the first 10 minutes, the liquid level rises from 0 to 100mm, and the initial impregnation rate is calculated to be 10mm / min. When the liquid level rises to 50mm above the sample (i.e., liquid level height 150mm), the glue pump automatically stops (feedback signal from the flow controller).

[0040] 3.3 Pressurization and Permeation Monitoring Phase The pressurization system was activated, raising the pressure inside tank 1 to 0.8 MPa within 40 minutes and maintaining that pressure for 120 minutes. The permeation monitoring unit showed that the pressure at the end micro-pressure sensor rose from 0 to 0.05 MPa and stabilized after 8 minutes (indicating complete resin permeation to the end); the pressure in the middle reached 0.05 MPa after 12 minutes; and the pressure at the corner reached 0.05 MPa after 15 minutes. Combined with the humidity sensor data (humidity increased from 20%RH to 95%RH after permeation), it was determined that the end impregnation rate was the fastest, and the corner the slowest. The regional rate difference rate was (10-6.67) / 8.33×100%≈39.9% (end rate 12.5 mm / min, corner rate 6.67 mm / min, average rate 8.33 mm / min). During this period, the resin impregnation status was observed through the observation window and camera; no bubbles or stratification were observed.

[0041] 3.4 Data Acquisition and Curve Generation The data acquisition system stores data every 10 seconds and automatically generates a "time-liquid level" curve (the slope is stable at 10-12 mm / min, indicating uniform initial immersion) and a "time-pressure at various points" curve (the slope of the end curve is the largest and the corner is the smallest, which intuitively reflects the rate difference).

[0042] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An evaluation device for the immersion speed of generator stator bar wrapping components during VPI (Vehicle Implantation) process, characterized in that, include: Tank (1), the top of the tank (1) is detachably connected to a sealing cover (2), the bottom of the tank (1) is equipped with a bracket and a sewage discharge assembly, the tank (1) contains a wire rod wrapping component, and the tank (1) is connected to a vacuum system and a pressurization system; A vacuum adhesive storage mechanism, wherein a first heating temperature control system is installed on the vacuum adhesive storage mechanism; A second heating and temperature control system is installed on the tank (1); The adhesive feeding assembly has one end connected to the vacuum adhesive storage mechanism and the other end connected to the inner cavity of the tank (1); The impregnation monitoring system includes a liquid level monitoring component, a permeation monitoring component, and a visual impregnation observation component; the liquid level monitoring component, the permeation monitoring component, and the visual impregnation observation component are all installed on the tank (1); The control system includes a vacuum system, a pressurization system, a first heating and temperature control system, a vacuum adhesive storage mechanism, a second heating and temperature control system, an adhesive feeding assembly, a liquid level monitoring assembly, a penetration monitoring assembly, and a visual immersion observation assembly, all of which are electrically connected to the control system.

2. The evaluation device for the immersion speed of generator stator bar wrapping components during VPI process according to claim 1, characterized in that: The bottom of the inner wall of the tank (1) is equipped with several spaced pads, and the inner side wall of the tank (1) is detachably connected with several partitions (3). The bottom of the inner wall of the tank (1) is provided with a flow guide groove, and there is a gap between the partitions (3) and the pads and the flow guide groove. The sewage discharge assembly includes several sewage discharge pipes, which are fixedly installed at the bottom of the tank (1) and communicate with the gap. A sewage discharge valve (4) electrically connected to the control system is installed on the sewage discharge pipe.

3. The evaluation device for assessing the immersion speed of generator stator bar wrapping components during VPI process according to claim 1, characterized in that: The vacuum adhesive storage mechanism includes: Adhesive storage tank (5), on which a first vacuum pressure gauge (6) is installed, and a first heating temperature control system is installed on the outer wall of the adhesive storage tank (5); The first vacuum pump (7) is connected to the adhesive storage tank (5) through the first vacuum pipeline; A mixing device (8) is installed inside the adhesive storage tank (5); The first vacuum pump (7) and the stirring device (8) are both electrically connected to the control system; one end of the adhesive feeding assembly is connected to the inner cavity of the adhesive storage tank (5).

4. The evaluation device for the immersion speed of generator stator bar wrapping components during VPI process according to claim 3, characterized in that: The first heating temperature control system includes: The first temperature controller (9) is installed on top of the adhesive storage tank (5); A heating belt is wrapped around the outer wall of the adhesive storage tank (5), and the heating belt is covered with an insulating cotton layer. A first temperature sensor is installed inside the adhesive storage tank (5); The heating belt and the first temperature sensor are both electrically connected to the first temperature controller (9), and the first temperature controller (9) is electrically connected to the control system.

5. The evaluation device for assessing the immersion speed of generator stator bar wrapping components during VPI process according to claim 1, characterized in that: The liquid level monitoring component includes several ultrasonic liquid level sensors, which are installed at intervals on the inner wall of the tank (1). The permeation monitoring component includes several miniature pressure sensors and several resistive humidity sensors, which are respectively embedded at intervals on the wire rod wrapping component. The visual immersion observation assembly includes a transparent observation window, an LED lighting device, and an industrial camera. The transparent observation window is installed on the top surface of the sealing cover (2), the LED lighting device is located on one side of the transparent observation window, and the industrial camera is fixedly installed on the top of the transparent observation window via a connecting bracket. The ultrasonic level sensor, the plurality of miniature pressure sensors, the plurality of resistive humidity sensors, the transparent observation window, the LED lighting equipment, and the industrial camera are all electrically connected to the control system.

6. The evaluation device for the immersion speed of generator stator bar wrapping components during VPI process according to claim 3, characterized in that: The adhesive feeding assembly includes a feed pipe (10), on which a solenoid valve and a diaphragm pump (11) are installed. The solenoid valve and the diaphragm pump (11) are electrically connected to the control system. One end of the feed pipe (10) is fixedly connected to and communicates with the adhesive storage tank (5), and the other end is equipped with a plurality of branch pipes (12). The plurality of branch pipes (12) are respectively fixedly connected to and communicate with the tank body (1).

7. The evaluation device for the immersion speed of generator stator bar wrapping components during VPI process according to claim 3, characterized in that: The vacuum system includes a second vacuum pump (13), which is connected to the inner cavity of the tank (1) through a second vacuum pipeline; a second vacuum pressure gauge (14), a positive pressure gauge (15), a handwheel (16) and a pressure relief valve (17) are installed on the sealing cover plate (2). The pressurization system includes an air compressor (18), which is connected to the inner cavity of the tank (1) via a pressurization pipeline; a pressure regulating valve is installed on the pressurization pipeline; The second heating temperature control system includes a second temperature controller (19), an electric heating wire, and a second temperature sensor. The second temperature controller (19) is installed on the sealing cover plate (2). The electric heating wire is wound around the outer wall of the tank body (1). The second temperature sensor is installed inside the tank body (1). The electric heating wire is covered with a rock wool insulation layer and an aluminum protective layer. The electric heating wire and the second temperature sensor are both electrically connected to the second temperature controller (19), and the second temperature controller (19), the second vacuum pump (13) and the air compressor (18) are all electrically connected to the control system.

8. The evaluation device for the immersion speed of generator stator bar wrapping components during VPI process according to claim 1, characterized in that: A handle (20) is installed on the sealing cover (2), and a sealing ring is installed between the sealing cover (2) and the tank body (1).

9. The evaluation device for assessing the immersion speed of generator stator bar wrapping components during VPI process according to claim 7, characterized in that: Vacuum sensors are installed in both the first and second vacuum lines, and the vacuum sensors are electrically connected to the control system.

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