Surface-mounted high-voltage diode oil-immersed thermal resistance test tool

Abstract

The utility model relates to the technical field of high-voltage diode oil immersion detection, in particular to a surface-mounted high-voltage diode oil immersion type thermal resistance testing tool which comprises a bottom shell, a limiting mechanism is arranged in an inner cavity of the bottom shell, and the limiting mechanism comprises a second rotating shaft and a first rotating shaft. The bottom of the second rotating shaft and the bottom of the first rotating shaft are movably connected with the bottom of an inner cavity of a bottom shell through bearings, a top shell is arranged at the top of the bottom shell, a circulating mechanism is arranged on the rear side of the top shell and comprises a liquid storage shell, and supporting rods are welded to the two sides of the bottom of the liquid storage shell. Through cooperative use of the top shell, the first rotating shaft, the anti-skid grab handle, the backflow pipe, the liquid pump, the liquid storage shell and the guide groove, in the use process, the liquid pump can be started through an external controller, the liquid pump pumps oil liquid into the inner cavity of the precipitation pipe through the liquid pumping pipe, and the oil liquid flows through the inner cavity of the precipitation pipe so as to be precipitated for multiple times.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage diode testing, in particular to an oil-immersed thermal resistance testing tool for a surface mounted high-voltage diode. Background Art

[0002] As a semiconductor device, the measurement of thermal resistance of the diode is one of the important performance indicators. In the thermal resistance test of semiconductor devices, considering their working environment and heat dissipation requirements, a method similar to oil immersion will be used for thermal resistance testing to simulate the heat dissipation effect under actual working conditions, so that the thermal resistance test tooling will be used for detection and processing.

[0003] After searching, the patent number is CN218412647U, and the name is a diode testing tool, including a test chamber, and an operation hole is opened on one side of the test chamber. Through research and analysis, it is found that although it has the advantage of good fixing effect, it still has the following disadvantages to a certain extent.

[0004] For example, the test fixture mentioned above usually uses secondary sedimentation to precipitate and remove impurities from the test oil after the oil immersion test during use, and cannot reduce the impurity content inside the oil by sedimentation and then filtering. Therefore, it may cause certain inconveniences to the recycling of the oil. In order to solve the above technical problems, we have designed a surface mount high-voltage diode oil-immersion thermal resistance test fixture. Utility Model Content

[0005] The utility model aims to provide a surface mounted high voltage diode oil-immersion thermal resistance test tool, which has the advantages of secondary precipitation of the detection oil and the method of precipitation and re-filtration to remove impurities, thereby solving the problem of low recycling rate caused by incomplete impurity removal of the oil.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a surface mounted high-voltage diode oil-immersed thermal resistance testing tool, comprising a bottom shell, the inner cavity of the bottom shell is provided with a limiting mechanism, the limiting mechanism comprises a second rotating shaft and a first rotating shaft, the bottom of the second rotating shaft and the bottom of the first rotating shaft are both movably connected to the bottom of the inner cavity of the bottom shell through bearings, the top of the bottom shell is provided with a top shell, the rear side of the top shell is provided with a circulation mechanism, and the circulation mechanism comprises a liquid storage shell.

[0007] Preferably, support rods are welded to both sides of the bottom of the liquid storage shell, and the side of the support rod away from the liquid storage shell is welded to the rear side of the bottom shell.

[0008] Preferably, the circulation mechanism comprises a sedimentation pipe, the right side of the bottom of the sedimentation pipe is welded to the bottom shell, the front side of the top of the sedimentation pipe is connected to a liquid extraction pipe, and the side of the liquid extraction pipe away from the sedimentation pipe is connected to the bottom shell.

[0009] Preferably, the rear side of the top of the sedimentation tube is connected to a filter shell, a filter plate is installed through the left side of the filter shell, the top of the filter shell is connected to a connecting pipe, the left side of the rear side of the liquid storage shell is connected to a liquid pump by bolts, the left side of the liquid pump is connected to the connecting pipe, the rear side of the liquid pump is connected to a reflux pipe, and the side of the reflux pipe away from the liquid pump is connected to the liquid storage shell.

[0010] Preferably, guide blocks are welded on both sides of the bottom of the front side of the liquid storage shell, and guide grooves for use with the guide blocks are opened on both sides of the rear side of the bottom shell.

[0011] Preferably, a bottom sliding sleeve of the second rotating shaft surface is provided with a threaded connecting sleeve, and a top of the second rotating shaft surface is provided with threads.

[0012] Preferably, a thread is provided at the bottom of the first rotating shaft surface, and the bottom of the first rotating shaft surface is threadedly sleeved with the inner wall of the threaded connecting sleeve, a second limit seat is welded between the opposite sides of the two threaded connecting sleeves, a first limit seat is provided at the bottom of the second limit seat, and the bottom of the first limit seat is welded to the bottom of the inner cavity of the bottom shell, and the top of the first rotating shaft and the top of the second rotating shaft are both welded with anti-slip handles.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model is provided with a top shell, a first rotating shaft, an anti-slip handle, a reflux pipe, a liquid pump, a liquid storage shell and a guide groove for coordinated use. During use, the liquid pump can be started by an external controller, and the liquid pump draws oil into the inner cavity of the sedimentation tube through the liquid extraction pipe, and the oil flows through the inner cavity of the sedimentation tube for multiple sedimentation.

[0015] 2. The utility model is provided with a sedimentation tube, a liquid extraction tube, a filter plate, a filter shell, a connecting tube, a guide block, a support rod, a threaded connection sleeve and a second limit seat. During use, the oil can be extracted into the inner cavity of the sedimentation tube through the liquid extraction tube, flow through the inner cavity of the sedimentation tube for multiple sedimentation, and then filtered again through the filter shell, and finally sent back through the connecting tube and the reflux pipe in sequence, so as to be recycled multiple times to improve the recycling rate of the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a three-dimensional left-side schematic diagram of the local structure of the utility model;

[0018] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the local structure of the utility model;

[0019] Figure 4 It is a three-dimensional rear view schematic diagram of the local structure of the utility model.

[0020] In the figure: 1. bottom shell; 2. top shell; 3. first rotating shaft; 4. non-slip handle; 5. reflux pipe; 6. liquid pump; 7. liquid storage shell; 8. guide groove; 9. second rotating shaft; 10. sedimentation tube; 11. liquid extraction tube; 12. filter plate; 13. filter shell; 14. connecting pipe; 15. guide block; 16. support rod; 17. threaded connecting sleeve; 18. second limit seat; 19. first limit seat; 20. limit mechanism; 21. circulation mechanism. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 4 A surface mounted high voltage diode oil-immersed thermal resistance test tool comprises a bottom shell 1, an inner cavity of the bottom shell 1 is provided with a limiting mechanism 20, the limiting mechanism 20 comprises a second rotating shaft 9 and a first rotating shaft 3, the bottom of the second rotating shaft 9 and the bottom of the first rotating shaft 3 are both movably connected to the bottom of the inner cavity of the bottom shell 1 through bearings, a top shell 2 is provided on the top of the bottom shell 1, a circulation mechanism 21 is provided on the rear side of the top shell 2, and the circulation mechanism 21 comprises a liquid storage shell 7.

[0022] See also Figure 2 Support rods 16 are welded on both sides of the bottom of the liquid storage shell 7, and the side of the support rod 16 away from the liquid storage shell 7 is welded to the rear side of the bottom shell 1.

[0023] See also Figure 3 The circulation mechanism 21 includes a sedimentation tube 10 , the right side of the bottom of the sedimentation tube 10 is welded to the bottom shell 1 , the front side of the top of the sedimentation tube 10 is connected to a liquid extraction tube 11 , and the side of the liquid extraction tube 11 away from the sedimentation tube 10 is connected to the bottom shell 1 .

[0024] See also Figure 4 The rear side of the top of the sedimentation tube 10 is connected to a filter shell 13, a filter plate 12 is installed through the left side of the filter shell 13, a connecting pipe 14 is connected to the top of the filter shell 13, a liquid pump 6 is connected to the left side of the rear side of the liquid storage shell 7 by bolts, the left side of the liquid pump 6 is connected to the connecting pipe 14, the rear side of the liquid pump 6 is connected to a reflux pipe 5, and the side of the reflux pipe 5 away from the liquid pump 6 is connected to the liquid storage shell 7.

[0025] See also Figure 3 Guide blocks 15 are welded on both sides of the bottom of the front side of the liquid storage shell 7, and guide grooves 8 for use with the guide blocks 15 are opened on both sides of the rear side of the bottom shell 1.

[0026] See also Figure 2 A threaded connection sleeve 17 is provided on the bottom sliding sleeve of the surface of the second rotating shaft 9, and a thread is provided on the top of the surface of the second rotating shaft 9.

[0027] See also Figure 2 A thread is provided at the bottom of the surface of the first rotating shaft 3, and the bottom of the surface of the first rotating shaft 3 is threadedly sleeved with the inner wall of the threaded connecting sleeve 17. A second limit seat 18 is welded between the opposite sides of the two threaded connecting sleeves 17, and a first limit seat 19 is provided at the bottom of the second limit seat 18. The bottom of the first limit seat 19 is welded to the bottom of the inner cavity of the bottom shell 1, and an anti-slip handle 4 is welded to the top of the first rotating shaft 3 and the top of the second rotating shaft 9.

[0028] By providing the bearings, the first rotating shaft 3 and the second rotating shaft 9 can be supported in a balanced manner, thereby improving the installation stability of the main body;

[0029] By providing the anti-slip handle 4, the friction between it and the user's hand can be increased, so that it is easier for the user to grasp it;

[0030] By providing the guide block 15 and the guide groove 8, the top shell 2 can be guided and limited during its movement, thereby improving the movement stability of its main body;

[0031] By providing the threaded connection sleeve 17, the second limiting seat 18 can be driven by thread transmission and guided at the same time, thereby improving the movement stability of the main body.

[0032] During use, the user performs an oil immersion test on the high-voltage diode placed between the second limit seat 18 and the first limit seat 19 by injecting oil. After the oil immersion test, the user can start the liquid pump 6 through the external controller. The liquid pump 6 draws the oil into the inner cavity of the sedimentation tube 10 through the suction pipe 11, and the oil flows through the inner cavity of the sedimentation tube 10 for multiple sedimentation, and is re-filtered through the filter shell 13, and finally is sent back through the connecting pipe 14 and the reflux pipe 5 in turn, so that it can be recycled multiple times to improve the recycling rate of the oil.

[0033] In summary: the surface mounted high voltage diode oil-immersed thermal resistance testing tooling solves the problem of low recycling rate caused by incomplete oil removal through the coordinated use of a sedimentation tube 10, a liquid extraction tube 11, a filter plate 12, a filter shell 13, a connecting tube 14, a guide block 15, a support rod 16, a threaded connection sleeve 17 and a second limit seat 18.

Claims

1. A surface mounted high voltage diode oil-immersion thermal resistance test tool, comprising a bottom shell (1), characterized in that: The inner cavity of the bottom shell (1) is provided with a limiting mechanism (20), the limiting mechanism (20) comprises a second rotating shaft (9) and a first rotating shaft (3), the bottom of the second rotating shaft (9) and the bottom of the first rotating shaft (3) are both movably connected to the bottom of the inner cavity of the bottom shell (1) via bearings, the top of the bottom shell (1) is provided with a top shell (2), the rear side of the top shell (2) is provided with a circulation mechanism (21), and the circulation mechanism (21) comprises a liquid storage shell (7).

2. The surface mounted high voltage diode oil-immersion thermal resistance test tool according to claim 1, characterized in that: Support rods (16) are welded to both sides of the bottom of the liquid storage shell (7), and the side of the support rod (16) away from the liquid storage shell (7) is welded to the rear side of the bottom shell (1).

3. The surface mounted high voltage diode oil-immersion thermal resistance test tool according to claim 1, characterized in that: The circulation mechanism (21) comprises a sedimentation pipe (10), the right side of the bottom of the sedimentation pipe (10) is welded to the bottom shell (1), the front side of the top of the sedimentation pipe (10) is connected to a liquid extraction pipe (11), and the side of the liquid extraction pipe (11) away from the sedimentation pipe (10) is connected to the bottom shell (1).

4. The surface mounted high voltage diode oil-immersion thermal resistance test tool according to claim 3, characterized in that: The rear side of the top of the sedimentation pipe (10) is connected to a filter housing (13), a filter plate (12) is installed through the left side of the filter housing (13), the top of the filter housing (13) is connected to a connecting pipe (14), the left side of the rear side of the liquid storage housing (7) is connected to a liquid pump (6) by bolts, the left side of the liquid pump (6) is connected to the connecting pipe (14), the rear side of the liquid pump (6) is connected to a return pipe (5), and the side of the return pipe (5) away from the liquid pump (6) is connected to the liquid storage housing (7).

5. The surface mounted high voltage diode oil-immersion thermal resistance test tool according to claim 1, characterized in that: Guide blocks (15) are welded on both sides of the bottom of the front side of the liquid storage shell (7), and guide grooves (8) used in conjunction with the guide blocks (15) are provided on both sides of the rear side of the bottom shell (1).

6. The surface mounted high voltage diode oil-immersion thermal resistance test tool according to claim 1, characterized in that: A threaded connection sleeve (17) is provided on the bottom sliding sleeve of the surface of the second rotating shaft (9), and a thread is provided on the top of the surface of the second rotating shaft (9).

7. The surface mounted high voltage diode oil-immersion thermal resistance test tool according to claim 5, characterized in that: The bottom of the surface of the first rotating shaft (3) is provided with a thread, and the bottom of the surface of the first rotating shaft (3) is threadedly sleeved with the inner wall of the threaded connection sleeve (17), a second limit seat (18) is welded between the two opposite sides of the threaded connection sleeves (17), a first limit seat (19) is arranged at the bottom of the second limit seat (18), the bottom of the first limit seat (19) is welded to the bottom of the inner cavity of the bottom shell (1), and the top of the first rotating shaft (3) and the top of the second rotating shaft (9) are both welded with an anti-slip handle (4).

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