A mica tape air permeability testing device

Abstract

The utility model discloses a kind of mica tape ventilation test devices, including workbench, four matrix arrangement support rods are equipped in the upper portion of workbench, hydraulic cylinder is equipped in the upper portion of top plate both sides, the fixed connection of the hydraulic cylinder stroke end is penetrated top plate and mounting plate, the lower portion of mounting plate is equipped with multiple equidistance arrangement upper pipe body, the upper portion of mounting plate is equipped with air pressure gauge matched with upper pipe body, the upper portion of workbench is equipped with lower pipe body matched with upper pipe body, air compressor is fixedly installed in the workbench, support frame is equipped in the side away from air compressor in the workbench, air tank is fixedly installed on the support frame, air duct is equipped on the air tank, the air duct is communicated with lower pipe body by connecting pipe. This kind of test device structure is simple, sealing effect is good, test efficiency is high, through comparison test, effectively increase the precision of mica tape ventilation test.

Description

Technical Field

[0001] This utility model relates to the field of mica tape testing technology, and in particular to a mica tape air permeability testing device. Background Technology

[0002] Mica tape, as an important insulating material, is widely used in electrical equipment such as motors and cables. Its air permeability is a key indicator of product quality; excessive air permeability leads to decreased insulation performance, affecting the safe operation of electrical equipment; insufficient air permeability may cause damage due to internal pressure changes during processing or use. Existing mica tape air permeability testing devices often suffer from low testing efficiency, poor sealing, and insufficient testing accuracy. Some devices can only test one sample at a time, failing to meet batch testing needs. Furthermore, air leakage is prone to occur at the seal between the sample and the test tube during testing, resulting in significant deviations in test data. Therefore, we propose a mica tape air permeability testing device. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a mica tape air permeability testing device. This invention solves the problems of low testing efficiency, poor sealing effect, and insufficient testing accuracy found in existing mica tape air permeability testing devices. Some devices can only test one sample at a time, failing to meet the needs of batch testing. Furthermore, during the testing process, air leakage easily occurs at the seal between the sample and the testing tube, leading to significant deviations in the test data.

[0004] This utility model discloses a mica tape air permeability testing device, comprising a workbench, four support rods arranged in a matrix above the workbench, the upper ends of the four support rods being fixedly connected to a top plate, hydraulic cylinders on both sides above the top plate, the stroke ends of the hydraulic cylinders penetrating the top plate and being fixedly connected to a mounting plate, multiple upper tubes arranged at equal intervals below the mounting plate, a pressure gauge matching the upper tubes being mounted above the mounting plate, the lower end of the pressure gauge being connected to the upper tubes, a lower tube matching the upper tubes being mounted above the workbench, an air compressor being fixedly installed inside the workbench, a support frame being mounted on the side of the workbench away from the air compressor, an air tank being fixedly installed on the support frame, an air guide pipe being mounted on the air tank, and the air guide pipe being connected to the lower tube through a connecting pipe.

[0005] In the above scheme, a solenoid valve is provided on the connecting pipe.

[0006] In the above scheme, the lower end of the upper tube body is provided with a limiting groove that matches the lower tube body, and a sealing ring is provided in the limiting groove.

[0007] In the above scheme, the top plate is provided with guide rods on both sides of the hydraulic cylinder, and the guide rods are fixedly connected to the mounting plate below.

[0008] In the above scheme, both side walls of the workbench are provided with heat dissipation windows.

[0009] In the above scheme, the workbench has a double door on one side wall, and the door has a groove in the middle of the side closest to each other.

[0010] The advantages and beneficial effects of this utility model are as follows: This utility model provides a mica tape air permeability testing device. Multiple upper tubes are arranged at equal intervals below the mounting plate, and a matching lower tube is located above the worktable. This allows for simultaneous testing of multiple mica tape samples, significantly improving testing efficiency and meeting batch testing requirements. The limiting groove at the lower end of the upper tube achieves precise docking with the lower tube, and the sealing ring within the limiting groove effectively prevents air leakage during testing. Simultaneously, the guide rod ensures the stability of the mounting plate's movement, guaranteeing precise alignment of the upper and lower tubes, further improving the accuracy of the test data. This testing device has a simple structure, good sealing effect, and high testing efficiency. Through comparative testing, it effectively increases the accuracy of mica tape air permeability testing. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of part A of the present invention.

[0013] In the diagram: 1. Workbench; 2. Support rod; 3. Top plate; 4. Hydraulic cylinder; 5. Mounting plate; 6. Upper pipe body; 7. Pressure gauge; 8. Lower pipe body; 9. Air compressor; 10. Support frame; 11. Air tank; 12. Air guide pipe; 13. Connecting pipe; 14. Solenoid valve; 15. Limit groove; 16. Sealing ring; 17. Guide rod; 18. Heat dissipation window; 19. Door body; 20. Pull groove. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0015] like Figure 1-3 As shown, this utility model is a mica tape air permeability testing device, including a workbench 1. Four support rods 2 arranged in a matrix are provided above the workbench 1. The four support rods 2 are fixedly connected to a top plate 3. Hydraulic cylinders 4 are provided on both sides above the top plate 3. The stroke ends of the hydraulic cylinders 4 penetrate the top plate 3 and are fixedly connected to a mounting plate 5. Multiple upper tubes 6 are arranged at equal intervals below the mounting plate 5. A pressure gauge 7 matching the upper tubes 6 is provided above the mounting plate 5. The lower end of the pressure gauge 7 is connected to the upper tubes 6. A lower tube 8 matching the upper tubes 6 is provided above the workbench 1. When the hydraulic cylinders 4 are working, they can push the mounting plate 5 vertically. The movement of the upper tube 6 is driven by the mounting plate 5, causing the upper tube 6 to move accordingly. When the upper tube 6 moves downward, the upper tube 6 and the lower tube 8 open and close to each other. An air compressor 9 is fixedly installed inside the workbench 1. A support frame 10 is provided on the side of the workbench 1 away from the air compressor 9. An air tank 11 is fixedly installed on the support frame 10. An air guide pipe 12 is provided on the air tank 11. The air guide pipe 12 is connected to the lower tube 8 through a connecting pipe 13. When the air compressor 9 is working, the compressed air from the air compressor 9 enters the tank 11 through the pipe. Through the transmission of the air guide pipe 12 and the connecting pipe 13, the compressed air can enter the lower tube 8.

[0016] The connecting pipe 13 is equipped with a solenoid valve 14, which can precisely control the air intake and shut-off of the lower pipe 8, thereby improving testing efficiency.

[0017] The upper tube 6 has a limiting groove 15 at its lower end that matches the lower tube 8. A sealing ring 16 is provided in the limiting groove 15. The limiting groove 15 can achieve precise docking between the upper tube 6 and the lower tube 8. The sealing ring 16 can effectively enhance the sealing performance between the two, avoid air leakage during the test, and improve the accuracy of the test data.

[0018] The top plate 3 is provided with guide rods 17 on both sides of the hydraulic cylinder 4. The guide rods 17 are fixedly connected to the mounting plate 5 below. The guide rods 17 can guide the up and down movement of the mounting plate 5, prevent the mounting plate 5 from tilting during the pressing process, ensure that the upper tube 6 and the lower tube 8 can be accurately aligned, and improve the stability and testing accuracy of the device.

[0019] The workbench 1 has heat dissipation windows 18 on both sides of its sidewalls. The heat dissipation windows 18 can accelerate the dissipation of heat generated by components such as the air compressor 9 inside the workbench 1, and prevent the components from being affected by overheating, thus affecting their service life and working performance.

[0020] The workbench 1 has a double door 19 on one side wall. The door 19 has a groove 20 in the middle of the side close to each other. The door 19 facilitates the inspection and maintenance of components such as the air compressor 9 and air tank 11 inside the workbench 1. The groove 20 facilitates the opening and closing of the door 19.

[0021] Specifically, in this invention, the mica tape samples to be tested are placed on the upper end face of the lower tube 8. The hydraulic cylinder 4 is activated, and the stroke end of the hydraulic cylinder 4 pushes the mounting plate 5 downward. Under the guidance of the guide rod 17, the mounting plate 5 moves smoothly downward, so that the limiting groove 15 at the lower end of the upper tube 6 aligns with the upper end of the lower tube 8. The sealing ring 16 clamps and seals the mica tape samples. The air compressor 9 is activated, and the air compressor 9 fills the air tank 11 with air. After the pressure in the air tank 11 reaches the set value, the solenoid valve 1 is opened. 4. Compressed air in the gas tank 11 enters the lower tube 8 through the air guide pipe 12 and connecting pipe 13, and then acts on the lower part of the mica tape sample. By observing the change in the reading of the pressure gauge 7, if the reading of the pressure gauge 7 rises within the set time, it indicates that the mica tape sample is permeable. The permeability can be judged according to the speed and magnitude of the rise in the reading. After the test is completed, the solenoid valve 14 is closed, the hydraulic cylinder 4 is controlled to retract at the stroke end, and the mounting plate 5 and the upper tube 6 are moved upward to remove the tested mica tape sample.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mica tape air permeability testing device, comprising a workbench (1), characterized in that, The workbench (1) is provided with four support rods (2) arranged in a matrix above it. The four support rods (2) are fixedly connected to the top plate (3) above it. Hydraulic cylinders (4) are provided on both sides above the top plate (3). The stroke end of the hydraulic cylinders (4) passes through the top plate (3) and is fixedly connected to the mounting plate (5). Multiple upper tubes (6) are arranged at equal intervals below the mounting plate (5). A pressure gauge (7) matching the upper tube (6) is provided above the mounting plate (5). The pressure gauge (7) is located below... The end is connected to the upper tube body (6). A lower tube body (8) matching the upper tube body (6) is provided above the workbench (1). An air compressor (9) is fixedly installed inside the workbench (1). A support frame (10) is provided on the side of the workbench (1) away from the air compressor (9). An air tank (11) is fixedly installed on the support frame (10). An air guide pipe (12) is provided on the air tank (11). The air guide pipe (12) is connected to the lower tube body (8) through a connecting pipe (13).

2. The mica tape air permeability testing device according to claim 1, characterized in that, A solenoid valve (14) is provided on the connecting pipe (13).

3. The mica tape air permeability testing device according to claim 1, characterized in that, The upper tube (6) has a limiting groove (15) at its lower end that matches the lower tube (8), and a sealing ring (16) is provided in the limiting groove (15).

4. The mica tape air permeability testing device according to claim 1, characterized in that, The top plate (3) is provided with guide rods (17) on both sides of the hydraulic cylinder (4), and the guide rods (17) are fixedly connected to the mounting plate (5) below.

5. The mica tape air permeability testing device according to claim 1, characterized in that, The workbench (1) has heat dissipation windows (18) on both sides of its sidewalls.

6. The mica tape air permeability testing device according to claim 1, characterized in that, The workbench (1) has a double door (19) on one side wall, and the door (19) has a groove (20) in the middle of the side close to each other.

Images