Rubber cake preparation device for large generator insulation box filler test
The use of a mechanical pressing device to prepare filler cakes for large generator insulation boxes solves the problems of low efficiency and uneven thickness in traditional manual preparation, enabling efficient and accurate electrical performance measurement and ensuring insulation quality and stable generator operation.
Patent Information
- Application Number
- CN202422972690.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Traditional manual methods for preparing rubber cakes are inefficient and result in uneven thickness, leading to inaccurate measurements of the electrical properties of the insulation box filler, which affects the insulation quality and stable operation of large generators.
The rubber cake preparation device consists of a low-speed, high-torque motor, a rotor, a connecting pipe, a pressure plate, a mold, a limit clamp, a support plate, and a limit post. It forms rubber cakes with uniform thickness and regular shape through mechanical pressing.
It improves the efficiency of rubber cake preparation, eliminates thickness inhomogeneity and manual operation dispersion, ensures the accuracy of electrical strength measurement, and saves time and manpower.
Smart Images
Figure CN223565355U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of large generator insulating material detection, concretely relates to a kind of rubber cake preparation device for large generator insulation box filler test. BACKGROUND
[0002] Large generator stator winding joint insulation adopts insulation box structure, insulation box interior needs to be filled with insulation box filler, insulation box filler is generally composed of epoxy resin, curing agent, inorganic filler, after three are mixed evenly, fill insulation box, complete joint insulation.The performance of insulation box filler directly determines the quality of stator winding joint insulation, and accurately testing the electrical properties of insulation box filler is crucial for monitoring the overall quality of joint insulation.
[0003] To detect the electrical properties of insulation box filler, rubber cake needs to be prepared for electrical strength test, and the accuracy of test results depends on the quality of rubber cake preparation.The traditional way of preparing rubber cake is to mix epoxy resin, curing agent and inorganic filler evenly to form a rubber mass, and then manually roll the rubber mass into a rubber cake with a wooden stick.But the viscosity of insulation box filler is large, the rubber mass is hard, and it is difficult and time-consuming to manually roll the rubber mass into a rubber cake, with low efficiency, and the thickness of the prepared rubber cake is uneven and irregular, with large thickness dispersion.The thickness of the rubber cake affects its electrical strength, the thicker the rubber cake, the more internal defects, and the lower the measured electrical strength;The thinner the rubber cake, the fewer internal defects, and the higher the measured electrical strength.Manual rolling of rubber cake cannot guarantee uniform thickness of rubber cake, and the dispersion of different manual operations is large, and the operation cannot be standardized, which brings errors to the measurement results, and cannot accurately reflect the electrical strength of insulation box filler.This is not accurate for the insulation material inspection of large generator, and the measurement deviation accumulates to the product, which may cause hidden trouble to the long-term stable operation. SUMMARY
[0004] Therefore, the utility model aims at providing a rubber cake preparation device for large generator insulation box filler test, which can prepare rubber cakes with uniform thickness, regular shape, improve work efficiency, save time and labor.The technical scheme of the utility model is as follows: a rubber cake preparation device for large generator insulation box filler test is composed of a low-speed large-torque motor, a rotating head, a connecting pipe, a pressure plate, a mold, a limiting clamp, a support plate and a limiting column.The low-speed large-torque motor is fixed on the support plate by the limiting clamp, and the support plate is fixed on the desktop by welding;The pressure plate is connected with the rotating head of the low-speed large-torque motor through the connecting pipe;The two limiting columns are fixed on the desktop by welding;The mold is placed on the desktop directly below the pressure plate.
[0005] In the above-mentioned rubber cake preparation device for large generator insulation box filler test, the inner thread of the connecting pipe is connected with the outer thread of the rotating head of the low-speed large-torque motor.
[0006] In the above-mentioned rubber cake preparation device for insulation box filling test of large generator, the two limiting columns are placed on the 180-degree diagonal positions of the pressure plate.
[0007] The beneficial effects of the present application are as follows:
[0008] 1. The rubber cake preparation device for insulation box filling test of large generator can obtain a test rubber cake with uniform thickness and regular shape, eliminate the measurement error caused by uneven thickness of the manually prepared rubber cake, eliminate the dispersion of different manual operations, and accurately measure the electrical strength of the insulation box filling.
[0009] 2. Compared with the traditional manual rubber cake preparation method, the present application effectively improves the rubber cake preparation efficiency and saves a large amount of time and manpower. BRIEF DESCRIPTION OF DRAWINGS
[0010] The drawings used in the embodiments of the present application will be briefly introduced as follows.
[0011] Figure 1 It is a three-dimensional diagram of the overall structure of the present application.
[0012] Figure 2 It is a top view of the partial structure of the present application.
[0013] The reference signs are as follows: 1 - low-speed large-torque motor, 2 - rotating head, 3 - connecting pipe, 4 - pressure plate, 5 - mold, 6 - limiting fixture, 7 - support plate, 8 - limiting column, 9 - table top. DETAILED DESCRIPTION
[0014] In order to make the purpose, technical scheme and beneficial effects of the present application clearer, the following will be further explained and described in combination with the drawings and specific embodiments, but each embodiment does not constitute a limitation on the present application. The specific embodiments described in the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.
[0015] As shown in the figure, a rubber cake preparation device for insulation box filling test of large generator is composed of a low-speed large-torque motor 1, a rotating head 2, a connecting pipe 3, a pressure plate 4, a mold 5, a limiting fixture 6, a support plate 7, and a limiting column 8.
[0016] The low-speed large-torque motor 1 is reliably fixed on the support plate 7 through the limiting fixture 6, the support plate 7 is reliably fixed on the table top 9 through welding, and the metal rotating head 2 and the metal connecting pipe 3 are connected through their respective metal threads.
[0017] The pressure plate 4 is reliably connected with the outer thread of the rotating head 2 of the low-speed large-torque motor through the inner thread of the connecting pipe 3, and the two limiting columns 8 are reliably fixed on the tabletop 9 through welding.
[0018] The two limiting columns 8 are placed on the 180° diagonal positions of the pressure plate, so that the pressure plate moves in two directions of up and down, and does not rotate.
[0019] The low-speed large-torque motor 1 is started to rotate the rotating head 2, the lifting of the pressure plate 4 is adjusted through the inner thread of the connecting pipe, the pressure plate 4 is placed at a proper height position, the mold 5 is placed on the tabletop 9 directly below the pressure plate 4, and the installation of the rubber cake preparation device for the large generator insulation box filling test is completed.
[0020] A layer of thin wollastonite powder or other demolding material is evenly applied on the inner wall of the mold 5 and the lower surface of the pressure plate 4, the mixed and uniform insulation box filling rubber mass is placed at the center position of the mold 5, the low-speed large-torque motor 1 is started, the low-speed large-torque motor 1 is forward rotated, the pressure plate 4 is lowered to the edge of the mold 5, the rubber mass is pressed into a rubber cake shape in the thickness limiting mold 5, the excess insulation box filling material flows out from the gap of the mold 5, and the rubber cake with uniform thickness is prepared; the low-speed large-torque motor 1 is reversed, the pressure plate 4 is raised, the mold 5 is taken out and is inverted on the tabletop 9, the mold 5 is gently lifted, the disc-shaped rubber cake is dropped on the tabletop 9 under the action of gravity, the operation is completed, after the disc-shaped test rubber cake with uniform thickness and regular shape is solidified, electrical strength test is carried out, and accurate measurement results are obtained.
[0021] The technical range of the utility model is not limited to the content in the above description, and various deformations and modifications of the above embodiment can be made by those skilled in the art without departing from the technical thought of the utility model, and these deformations and modifications should all belong to the range of the utility model.
Claims
1. A device for preparing rubber cakes for testing insulation box fillers in large generators, characterized in that: It consists of a low-speed, high-torque motor (1), a rotor (2), a connecting pipe (3), a pressure plate (4), a mold (5), a limiting clamp (6), a support plate (7), and limiting posts (8). The low-speed, high-torque motor (1) is fixed to the support plate (7) by the limiting clamp (6), and the support plate (7) is fixed to the tabletop (9) by welding. The pressure plate (4) is connected to the rotor (2) of the low-speed, high-torque motor by the connecting pipe (3). The two limiting posts (8) are fixed to the tabletop (9) by welding. The mold (5) is placed on the tabletop (9) directly below the pressure plate (4).
2. The apparatus for preparing rubber cakes for testing insulation box fillers of a large generator according to claim 1, characterized in that: The internal thread of the connecting pipe (3) is connected to the external thread of the rotor (2) of the low-speed, high-torque motor.
3. The apparatus for preparing rubber cakes for testing insulation box fillers in a large generator according to claim 1, characterized in that: The limiting posts (8) are two in number and are placed at the 180° diagonal position of the pressure plate.