A device for inspecting the coating film of enameled wire with full-angle visibility

Abstract

This utility model relates to a fully omnidirectional enameled wire coating testing device, solving the problem that existing enameled wire coating testing devices can only be observed from above, which is inconvenient. The device includes a test chamber containing phenolphthalein test reagent, with a lower housing below the test chamber. The test chamber has an opening at the top, and its bottom and sides are made of transparent material. One or more terminals are located on the upper part of the side wall of the test chamber. An upward-illuminating supplementary light is provided below the test chamber in the lower housing. The lower housing also contains a power module, which is connected to a positive wire with a conductor post at its end, the conductor post being immersed in the test chamber. The power module is also connected to several negative wires, each with its end clamped to a corresponding terminal. This utility model allows the operator to observe the enameled wire testing from various angles, reducing blind spots and ensuring accurate and complete testing.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment, and relates to a device for testing enameled wire, and particularly to a device for testing the enamel film of enameled wire that is visible from all angles. Background Technology

[0002] The phenolphthalein test for enameled wire is a common method for detecting pinholes in the enamel film. The test involves connecting the positive electrode of the enameled wire to a solution bath and the negative electrode to a sample conductor. The wire is then immersed in a mixture containing 0.2% sodium chloride and 3% phenolphthalein solution, and a DC voltage (usually 12V) is applied. The enamel film at the pinhole produces hydrogen gas and hydroxide ions (OH⁻) through an electrolytic reaction. Phenolphthalein turns red upon contact with OH⁻, thus indicating the pinhole location. Existing enameled wire testing devices use a test tank that is closed on three sides except for an opening at the top, making observation difficult. Furthermore, the test tank, power supply, wiring, and control module are often integrated into a single unit, requiring the entire unit to be moved and tilted when emptying the reagents, resulting in inconvenient operation and potential damage to the instrument. Utility Model Content

[0003] The purpose of this invention is to solve the problem that existing enameled wire coating testing devices can only be observed from above, which is inconvenient. It provides an all-angle visible enameled wire coating testing device, employing a transparent tank wall to achieve all-angle visibility. Furthermore, a supplementary light is added below the testing tank to provide upward illumination. Combined with the refraction and reflection effects of the transparent tank wall, all angles of the testing tank are illuminated, reducing blind spots. This invention also features a split-type testing tank design, allowing the tank to be moved and the solution poured out separately after testing, making it more convenient.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a full-angle visible enameled wire coating detection device, including a test tank containing phenolphthalein test reagent, a lower box body arranged below the test tank, the test tank having an opening at the top, the bottom and all sides of the test tank being made of transparent material, one or more terminals being arranged on the upper part of the side wall of the test tank, the lower box body having an upward illumination supplementary light below the test tank, the lower box body also having a power module, the power module being connected to a positive wire, the end of the positive wire being connected to a conductor post, the conductor post being immersed in the test tank, the power module being connected to several negative wires, the ends of each negative wire being clamped to the corresponding terminals by wire clamps.

[0005] This device uses a transparent material to make the test chamber and uses supplementary lights to illuminate from bottom to top. This provides sufficient illumination during the testing of the enameled wire coating. The operator can observe the test of the enameled wire from various angles, reducing blind spots and ensuring accurate testing and no omissions in observation.

[0006] Preferably, a power control module is also provided inside the lower housing.

[0007] Preferably, the test chamber and the lower box are separate components. The upper inner wall of the lower box has several load-bearing steps protruding inward, and the test chamber is supported on these load-bearing steps. This separate design allows for easy removal of the wires after testing, enabling the test chamber to be lifted separately to empty the reagents without damaging any electrical components.

[0008] Preferably, the length of the lower housing is greater than the length of the test slot, and a power module is installed on the section of the lower housing that is longer than the test slot. An openable cover is provided above the power module. The cover provides shielding and protection for the power module.

[0009] Preferably, the inner wall of the lower box has a cover plate supporting a step that protrudes inward in the direction above the power module.

[0010] Preferably, the height of the cover plate receiving step is higher than that of the load-bearing step, and the cover plate receiving step closest to the test groove serves as a lateral limiting block for the test groove.

[0011] Preferably, the side wall of the lower box is provided with heat dissipation grooves.

[0012] Preferably, the test groove is made of acrylic, glass or plastic.

[0013] Preferably, the sidewalls of the lower box are made of a transparent material.

[0014] Preferably, the supplemental light uses white or color-changing LEDs.

[0015] This invention provides ample illumination during the testing of the enamel coating of enameled wires in the testing tank, allowing the operator to observe the testing process from various angles, reducing blind spots, ensuring accurate testing, and eliminating any omissions in observation. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the lower box structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the test groove structure of this utility model.

[0020] In the diagram: 1. Test slot, 2. Lower box, 3. Supplemental light, 4. Power module, 5. Positive wire, 6. Conductor post, 7. Negative wire, 8. Wire clamp, 9. Terminal block, 10. Load-bearing step, 11. Cover plate support step, 12. Cover plate, 13. Heat dissipation slot. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0022] Example: A device for detecting the enamel film of enameled wire with full-angle visibility, such as... Figure 1 As shown. This device includes a test chamber 1 containing phenolphthalein test reagent, and a lower box 2 is disposed below the test chamber.

[0023] like Figure 1 , 3 As shown, the test tank 1 has an opening at the top, and its bottom and all sides are made of transparent acrylic material. Three terminals 9 are respectively provided on each of the opposite side walls of the test tank 1. The side walls of the lower housing 2 are made of transparent acrylic material.

[0024] like Figure 1 , 2 As shown, the lower housing 2 is equipped with an upward-illuminating supplementary light 3 below the test slot 1. The supplementary light is a white LED strip light. The lower housing 2 is also equipped with a power module 4, and a matching power control module is also installed inside the lower housing. The power module is connected to a positive wire 5, and the end of the positive wire is connected to a conductor post 6. The conductor post 6 is immersed in the test slot 1. The power module 4 is connected to several negative wires 7, and the ends of each negative wire 7 are clamped to the corresponding terminals 9 by wire clamps 8.

[0025] The test slot 1 and the lower box 2 are separate components. Several load-bearing steps 10 protrude inward from the upper part of the inner wall of the lower box 2, and the test slot 1 is supported below these load-bearing steps 10. The length of the lower box 2 is greater than the length of the test slot 1. A power module 4 is installed on the section of the lower box 2 that is longer than the test slot 1, and an openable cover plate 12 is installed above the power module. A cover plate receiving step 11 protrudes inward from the upper part of the inner wall of the lower box above the power module. The height of the cover plate receiving step 11 is higher than the load-bearing steps 10, and the cover plate receiving step closest to the test slot serves as a lateral limiting block for the test slot. Heat dissipation grooves 13 are provided on the side wall of the lower box 2.

[0026] During the testing of the enameled wire coating in the test tank, the LED lights are turned on to provide full upward illumination. This allows the operator to observe the test results of the enameled wire from various angles, reducing blind spots and ensuring accurate testing without any omissions.

Claims

1. A device for detecting the enamel coating of enameled wire with full-angle visibility, comprising a test tank containing phenolphthalein test reagent, characterized in that: A lower housing is provided below the test slot. The test slot has an opening at the top, and its bottom and all sides are made of transparent material. One or more terminals are provided on the upper part of the side wall of the test slot. The lower housing is provided with an upward-illuminating supplementary light below the test slot. The lower housing is also provided with a power module. The power module is connected to a positive wire, and the end of the positive wire is connected to a conductor post. The conductor post is immersed in the test slot. The power module is connected to several negative wires, and the ends of each negative wire are clamped to the corresponding terminals by wire clamps.

2. The omnidirectional visible enameled wire coating inspection device according to claim 1, characterized in that: The lower housing also contains a power control module.

3. The omnidirectional visible enameled wire coating inspection device according to claim 1, characterized in that: The test slot and the lower box are separate components. The upper part of the inner wall of the lower box has several load-bearing steps protruding inward. The test slot is supported on the load-bearing steps.

4. The omnidirectional visible enameled wire coating detection device according to claim 3, characterized in that: The length of the lower box is greater than the length of the test slot. A power module is installed on the section of the lower box that is longer than the test slot. An openable cover is installed above the power module.

5. The omnidirectional visible enameled wire coating inspection device according to claim 4, characterized in that: The inner wall of the lower box has a cover plate that protrudes inward from the power module to support the step.

6. The omnidirectional visible enameled wire coating detection device according to claim 5, characterized in that: The height of the cover plate receiving step is higher than that of the load-bearing step, and the cover plate receiving step closest to the test groove serves as a lateral limiting block for the test groove.

7. The omnidirectional visible enameled wire coating inspection device according to claim 1, characterized in that: The side wall of the lower box is provided with heat dissipation grooves.

8. The omnidirectional visible enameled wire coating inspection device according to claim 1, characterized in that: The test chamber is made of acrylic, glass, or plastic.

9. The omnidirectional visible enameled wire coating inspection device according to claim 1, characterized in that: The side walls of the lower box are made of transparent material.

10. The omnidirectional visible enameled wire coating detection device according to claim 1, characterized in that: The supplemental lighting uses white or color-changing LEDs.

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