A HPD airtightness detection system

Abstract

The present application relates to the technical field of ultrasonic scanning detection, and in particular to a HPD airtightness detection system, comprising a detection seat and an airtightness detection head, wherein an upper template and a lower template are movably mounted on the detection seat, an upper surface of the lower template is provided with an inwardly concave detection groove, a receiving groove is provided in the detection groove, and the receiving grooves are interconnected through ventilation grooves, a ventilation hole is provided on the side of the lower template, a sealing strip is provided between the lower template and the upper template, a plurality of detection grooves facing the receiving grooves are provided on the upper template, and a plurality of sealing strips pressed around the HPD are fixed on the lower surface of the upper template. The HPD is placed in the receiving groove, and the lower template is pressed on the upper template for fixing. The airtightness detection head is inserted into the ventilation hole, and the airtightness detection head introduces a certain pressure of gas into the ventilation hole, and judges the leakage situation according to the air pressure, thereby completing the sealing test of the upper and lower templates, which is easy to use.

Description

Technical Field

[0001] The present application relates to the technical field of ultrasonic scanning detection, and in particular to a HPD airtightness detection system. Background Art

[0002] HPD (Inverse Power Protection) power modules are primarily used to monitor the active power of generators, ensuring reverse power protection when generator sets are connected in parallel or to the grid, preventing equipment damage or accidents caused by reverse power. Ultrasonic scanning acoustic tomography (SAT), also known as C-SAM (C-mode scanning acoustic microscope), is a device that uses the differences in reflection rate and energy between high-frequency ultrasonic waves and materials of varying densities for inspection. It is widely used in the HPD back-end process for HPD inspection.

[0003] Ultrasonic microscopy requires water as a medium for flaw detection on HPDs. However, moisture on the HPD chip surface can easily cause short circuits. Therefore, the HPD must be sealed before ultrasonic testing, with only the surface exposed for inspection.

[0004] After HPD sealing, its sealing effect needs to be tested to prevent water seepage. However, there is currently a lack of good testing methods. Summary of the Invention

[0005] In order to perform a sealing test on an HPD, the present application provides an HPD airtightness detection system.

[0006] The HPD airtightness detection system provided in this application adopts the following technical solutions:

[0007] A HPD airtightness detection system includes a detection seat and an airtightness detection head, wherein an upper template and a lower template are movably mounted on the detection seat, an upper surface of the lower template is provided with an inwardly concave detection groove, a plurality of receiving grooves for placing HPDs are provided in the detection groove, and the receiving grooves are interconnected through ventilation grooves, a ventilation hole connected to the detection groove and matching the airtightness detection head is provided on the side of the lower template, a sealing strip is provided between the lower template and the upper template, the sealing strip is arranged around the periphery of the detection groove, a plurality of observation grooves facing the receiving grooves are provided on the upper template, and a plurality of sealing strips pressed around the HPD are fixed on the lower surface of the upper template.

[0008] By adopting this technical solution, the HPD is placed in the receiving tank, and the lower template is pressed against the upper template to secure it. The sealing strip is pressed against the HPD, and the sealing strip and the sealing strip seal the connection between the upper and lower templates. The airtightness test head is inserted into the vent hole, and the airtightness test head injects gas at a certain pressure into the vent hole and determines the leakage based on the air pressure, thus completing the sealing test of the upper and lower templates. It is convenient to use.

[0009] Preferably, a waterproof door for opening and closing the vent is rotatably connected to the vent, a rotating rod rotatably connected to the vent in a horizontal direction is fixed at the center of the waterproof door, the axis of the rotating rod is perpendicular to the axis of the vent, a control hole parallel to the vent is provided in the lower template, a control worm is rotatably connected to the control hole, the end of the rotating rod passes through the vent and is located in the control hole and is coaxially fixed with a control worm gear that meshes with the control worm.

[0010] Using this technical solution, during the airtightness test, the operator rotates the control worm, which drives the worm wheel, which in turn rotates the rotating rod and the waterproof door, opening the water vent and allowing the airtightness test head to perform the airtightness test. After the upper and lower templates pass the airtightness test, they are placed in water for ultrasonic scanning. At this point, the control worm is reversed, and the waterproof door blocks the vent, preventing water from entering the test tank through the vent.

[0011] Preferably, a drive rod parallel to the axial direction of the vent hole is horizontally slidably connected in the lower template, a drive column is fixed to the outer wall of the drive rod, a spiral groove is provided on the outer wall of the end of the control worm away from the control worm wheel, and the drive column is slidably connected in the spiral groove.

[0012] By adopting the above technical solution, when the operator pulls the driving rod, the driving column slides in the spiral groove and drives the control worm to rotate through the spiral groove, thereby realizing the control of the opening and closing of the waterproof door, which is easy to use.

[0013] Preferably, a control rod parallel to the axial direction of the vent hole is horizontally slidably connected to the detection seat, a connecting rod is vertically fixed on the control rod, a driving hole matching the connecting rod is provided on the lower surface of the driving rod, and the control rod is connected to the detection seat by a control spring. When the control spring is in a natural state, the connecting rod is opposite to the driving hole.

[0014] By adopting the above technical solution, the lower template is installed on the detection seat, the connecting rod is inserted into the drive hole, the control rod and the drive rod are connected by the connecting rod, and the sliding of the control rod drives the sliding of the drive rod, thereby controlling the opening and closing of the waterproof door.

[0015] Preferably, a mounting seat is slidably connected to the detection seat, the sliding direction of the mounting seat is consistent with the axial direction of the vent, the airtight detection head is installed on the mounting seat, and the end of the control rod away from the connecting rod points to the mounting seat. When the control spring is in a natural state, the distance between the control rod and the mounting seat is greater than the distance between the airtight detection head and the vent.

[0016] By adopting the above technical solution, the lower template is mounted on the test base, and the upper template is mounted on the upper template. The mounting base slides toward the lower template, and the airtightness test head is inserted into the vent. The mounting base continues to slide toward the test base, where it contacts and pushes the control rod to slide. The control rod drives the drive rod to slide, ultimately rotating the waterproof door to open the vent, and the airtightness test head begins to ventilate and perform an airtightness test. As the airtightness test head slides, the waterproof door automatically opens the vent. When the test is complete, the mounting base retreats, and the control spring resets the control rod, causing the waterproof door to close the vent. No additional manual operation is required, making it easy to use.

[0017] Preferably, a return spring is connected between the driving rod and the lower template, and when the return spring is in a natural state, the waterproof door blocks the vent hole.

[0018] By adopting the above technical solution, when the upper template and the lower template are performing ultrasonic scanning, the reset spring applies thrust to the drive rod, thereby ensuring that the waterproof door always blocks the vent hole, thereby ensuring the waterproof effect.

[0019] Preferably, a drainage hole is provided on the side wall of the vent, one end of the drainage hole is located on the side wall of the vent, and the other end is located on the end of the lower template. The end of the drainage hole on the side wall of the vent is located on the side of the waterproof door away from the detection slot, and a one-way valve is installed on the end of the drainage hole on the lower template.

[0020] By adopting the above technical solution, the upper and lower templates are usually reused. After the ultrasonic scanning is completed, the HPD inside the lower template is removed, and a new HPD is replaced and an airtightness test is performed. When the airtightness test is performed again, since the lower template has been immersed in water, moisture is likely to remain in the water holes. If the waterproof door is opened directly for ventilation, the moisture remaining in the vents will be blown into the test tank, affecting the performance of the HPD. Therefore, when the airtightness detection head is just inserted into the vent and the waterproof door is not opened, the airtightness detection head starts to ventilate. At this time, the airflow blows the vent and the waterproof door, and the airflow carries the moisture in the vent into the drain hole, and finally blows open the one-way valve to discharge the moisture. After the moisture in the vent is discharged, the airtightness detection head continues to move forward, the waterproof door gradually opens, and the airtightness test is performed.

[0021] Preferably, a support column for supporting the HPD is provided at a corner of the accommodating groove, and the upper end of the support column is higher than the lower end of the ventilation groove.

[0022] By adopting the above technical solution, the support column supports the HPD, thereby improving the stability of the HPD and limiting the installation of the HPD, thereby ensuring the smooth flow of the ventilation slot and preventing obstruction.

[0023] In summary, this application has the following beneficial technical effects:

[0024] Through the setting of the upper template, lower template and airtight detection head, the HPD seal is installed in the upper template and lower template, and is tested through the airtight detection head, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0026] Figure 2 This is a schematic diagram of the structure in which the upper template is removed in the embodiment;

[0027] Figure 3 This is a schematic diagram showing the structure of the water hole in the embodiment;

[0028] Figure 4 yes Figure 3 A magnified schematic diagram of part A in the middle;

[0029] Figure 5 Schematic diagram of the connection between the control rod and the driving rod in the embodiment.

[0030] Description of reference numerals:

[0031] 1. Detection seat; 2. Airtight detection head; 3. Upper template; 31. Observation slot; 32. Sealing strip; 4. Lower template; 41. Detection slot; 42. Accommodation slot; 43. Vent slot; 44. Vent hole; 45. Sealing strip; 46. Control hole; 47. Drain hole; 48. One-way valve; 49. Support column; 5. Waterproof door; 51. Rotating rod; 61. Control worm; 611. Spiral groove; 62. Control worm wheel; 63. Drive rod; 631. Drive column; 632. Drive hole; 64. Reset spring; 7. Control rod; 71. Connecting rod; 72. Control spring; 8. Mounting seat. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings. Example

[0033] The present application embodiment discloses a HPD airtightness detection system, referring to Figure 1, including a test base 1, an airtight test head 2, an upper template 3 and a lower template 4. The HPD seal is installed between the upper template 3 and the lower template 4. The upper template 3 and the lower template 4 are placed on the test base 1 and the airtight test head 2 is used to perform an airtight test.

[0034] Reference Figure 1 and Figure 2 The upper surface of the lower template 4 is provided with a concave detection groove 41, and a receiving groove 42 for placing the HPD is provided in the detection groove 41. In this embodiment, four receiving grooves 42 are provided. The receiving grooves 42 are connected to each other through the ventilation grooves 43. Support columns 49 for supporting the HPD are provided at the corners of the receiving grooves 42. The upper end of the support column 49 is higher than the lower end of the ventilation groove 43. The HPD is installed in the receiving groove 42. The support column 49 supports the HPD to improve the stability of the HPD. The bottom of the HPD is higher than the bottom of the receiving groove 42, thereby avoiding blocking the receiving groove 42 and affecting the flow of air.

[0035] Reference Figure 1 and Figure 2 The side of the lower template 4 is provided with a vent 44 connected to the detection slot 41. The vent 44 cooperates with the airtightness detection head 2. When the airtightness detection head 2 is inserted into the vent 44, the vent 44 is sealed to ensure airtightness. A sealing strip 45 is provided between the lower template 4 and the upper template 3. The sealing strip 45 is arranged around the periphery of the detection slot 41. The upper template 3 is provided with several observation slots 31 that are opposite the receiving slots 42. The lower surface of the upper template 3 is fixed with several sealing strips 32 that press around the HPD. The sealing strips 32 are located around the observation slots 31. The sealing strips 45 and 32 seal the connection between the upper template 3 and the lower template 4, improving the airtightness.

[0036] Reference Figures 1 to 4 A waterproof door 5 for opening and closing the vent 44 is rotatably connected to the vent 44. When the lower template 4 is placed in water for ultrasonic scanning, the waterproof door 5 closes the vent 44 to prevent water from entering the detection tank 41. When performing an airtight test, the waterproof door 5 opens the vent 44 for easy testing.

[0037] Reference Figures 1 to 4 The center of the waterproof door 5 is fixed with a rotating rod 51 that is horizontally connected to the vent 44, and the axis of the rotating rod 51 is perpendicular to the axis of the vent 44. The waterproof door 5 rotates around the rotating rod 51 to control the opening and closing of the vent 44.

[0038] Reference Figures 1 to 4The lower mold plate 4 has a control hole 46 parallel to the vent hole 44. A control worm 61 is rotatably connected to the control hole 46. The end of the rotating rod 51 passes through the vent hole 44 and is located within the control hole 46. A control worm gear 62 is coaxially fixed to the rotating rod 51 and meshes with the control worm 61. The rotation of the control worm 61 drives the control worm gear 62, thereby driving the rotation of the waterproof door 5, achieving control of the opening and closing of the vent hole 44. Furthermore, the worm gear mechanism is self-locking, preventing the waterproof door 5 from rotating and opening on its own, further enhancing the waterproofing effect of the waterproof door 5.

[0039] Reference Figures 1 to 4 The bottom of the lower mold plate 4 has a drive groove parallel to the axis of the vent hole 44. The drive groove is located below and connected to the control hole 46. A drive rod 63 is horizontally slidably connected within the drive groove. A drive post 631 is fixed to the outer wall of the drive rod 63. A spiral groove 611 is defined on the outer wall of the end of the control worm 61 facing away from the control worm wheel 62. The drive post 631 slides within the spiral groove 611. A return spring 64 is connected between the drive rod 63 and the lower mold plate 4. When the return spring 64 is in its neutral position, the waterproof door 5 blocks the vent hole 44. When the operator pushes and pulls the drive rod 63, the drive post 631 slides within the spiral groove 611, driving the control worm 61 through the spiral groove 611 to control the opening and closing of the vent hole 44.

[0040] Reference Figures 1 to 5 , a control rod 7 parallel to the axial direction of the vent hole 44 is horizontally slidably connected to the detection seat 1, a connecting rod 71 is vertically fixed to the end of the control rod 7, and a driving hole 632 that matches the connecting rod 71 is provided on the lower surface of the driving rod 63. The control rod 7 is connected to the detection seat 1 by a control spring 72. When the control spring 72 is in a natural state, the connecting rod 71 is opposite to the driving hole 632. When the lower template 4 is installed on the detection seat 1, the connecting rod 71 is inserted into the driving hole 632. On the one hand, the position of the lower template 4 is positioned, and on the other hand, the operator can control the opening and closing of the vent hole 44 by sliding the control rod 7.

[0041] Reference Figures 1 to 5 A mounting seat 8 is horizontally slidably connected to the test base 1, and the sliding direction of the mounting seat 8 is parallel to the axial direction of the vent hole 44. The airtightness test head 2 is mounted on the mounting seat 8, and the end of the control rod 7 away from the control hole 46 points toward the mounting seat 8. When the control spring 72 is in the natural state, the distance between the control rod 7 and the mounting seat 8 is greater than the distance between the airtightness test head 2 and the vent hole 44.

[0042] Reference Figures 1 to 5The lower template 4 is mounted on the test base 1 for airtightness testing. The mounting base 8 drives the airtightness test head 2 toward the lower template 4 until it is inserted into the vent 44. The mounting base 8 continues to move, interfering with the control rod 7 and pushing the control rod 7 to slide, ultimately causing the waterproof door 5 to flip and open the vent 44. The airtightness test head 2 is then tested.

[0043] Reference Figures 1 to 5 A drainage hole 47 is formed in the side wall of the vent hole 44. One end of the drainage hole 47 is located in the side wall of the vent hole 44, and the other end is located at the end of the lower template 4. The end of the drainage hole 47 located in the side wall of the vent hole 44 is located on the side of the waterproof door 5 away from the detection slot 41. A one-way valve 48 is installed at the end of the drainage hole 47 located in the lower template 4. The opening direction of the one-way valve 48 is from one side of the one-way valve 48 toward the waterproof door 5 to the other side.

[0044] Reference Figures 1 to 5 The upper template 3 and the lower template 4 are usually reused. After the ultrasonic scanning is completed, the HPD inside the lower template 4 is removed, and a new HPD is replaced and an airtightness test is performed. When the airtightness test is performed again, since the lower template 4 has been immersed in water, moisture is likely to remain between the waterproof door 5 in the water hole and the end of the water hole. If the waterproof door 5 is directly opened for ventilation, the moisture remaining in the vent 44 will be blown into the detection tank 41, affecting the performance of the HPD. Therefore, when the airtightness detection head 2 is just inserted into the vent 44 and the waterproof door 5 is not opened, the airtightness detection head 2 starts to ventilate. At this time, the airflow blows the vent 44 and the waterproof door 5. The airflow carries the moisture in the vent 44 and blows it into the drain hole 47, and finally blows open the one-way valve 48 to discharge the moisture. After the moisture in the vent 44 is discharged, the airtightness detection head 2 continues to move forward, and the waterproof door 5 gradually opens to perform an airtightness test.

[0045] The implementation principle of an HPD airtightness detection system in an embodiment of the present application is as follows: the lower template 4 is placed on the detection seat 1, and the connecting rod 71 is inserted into the driving hole 632. The HPD is placed in the accommodating groove 42, and the upper template 3 is covered on the lower template 4 and fixedly connected by means of bolts or snaps. The mounting seat 8 drives the airtightness detection head 2 to move toward the lower template 4. When the airtightness detection head 2 is just inserted into the vent 44, the waterproof door 5 is not yet opened. The airtightness detection head 2 sprays air, and the airflow blows the vent 44 to discharge moisture from the drain hole 47. The mounting seat 8 continues to move until it contacts the control rod 7 and pushes the control rod 7 to slide. The waterproof door 5 flips over to open the vent 44, and the airtightness test begins.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A HPD airtightness detection system, characterized by: The invention comprises a detection seat (1) and an airtight detection head (2), wherein an upper template (3) and a lower template (4) are movably mounted on the detection seat (1), an upper surface of the lower template (4) is provided with an inwardly concave detection groove (41), a plurality of receiving grooves (42) for placing HPDs are provided in the detection groove (41), the receiving grooves (42) and the receiving grooves (42) are communicated with each other through ventilation grooves (43), a side of the lower template (4) is provided with a ventilation hole (44) which is connected to the detection groove (41) and matches the airtight detection head (2), a sealing strip (45) is provided between the lower template (4) and the upper template (3), the sealing strip (45) is arranged around the outer periphery of the detection groove (41), and a plurality of holes (44) which are directly opposite to the receiving grooves (42) are provided on the upper template (3). An observation groove (31) is provided, and a plurality of sealing strips (32) pressed around the HPD are fixed on the lower surface of the upper template (3); a waterproof door (5) for opening and closing the vent hole (44) is rotatably connected in the vent hole (44); a rotating rod (51) is fixed at the center of the waterproof door (5) and is horizontally rotatably connected in the vent hole (44); the axis of the rotating rod (51) is perpendicular to the axis of the vent hole (44); a control hole (46) parallel to the vent hole (44) is provided in the lower template (4); a control worm (61) is rotatably connected in the control hole (46); the end of the rotating rod (51) passes through the vent hole (44) and is located in the control hole (46) and is coaxially fixed with a control worm wheel (62) meshing with the control worm (61).

2. The HPD airtightness detection system according to claim 1, characterized in that: A driving rod (63) parallel to the axial direction of the vent hole (44) is horizontally slidably connected inside the lower template (4), a driving column (631) is fixed to the outer wall of the driving rod (63), a spiral groove (611) is formed on the outer wall of the end of the control worm (61) away from the control worm wheel (62), and the driving column (631) is slidably connected in the spiral groove (611).

3. The HPD airtightness detection system according to claim 2, characterized in that: The detection seat (1) is horizontally slidably connected to a control rod (7) parallel to the axial direction of the vent hole (44); a connecting rod (71) is vertically fixed to the control rod (7); a driving hole (632) matching the connecting rod (71) is provided on the lower surface of the driving rod (63); the control rod (7) and the detection seat (1) are connected via a control spring (72); when the control spring (72) is in a natural state, the connecting rod (71) is directly opposite to the driving hole (632).

4. The HPD airtightness detection system according to claim 3, characterized in that: The detection seat (1) is slidably connected to a mounting seat (8), the sliding direction of the mounting seat (8) is consistent with the axial direction of the vent hole (44), the airtight detection head (2) is mounted on the mounting seat (8), the end of the control rod (7) away from the connecting rod (71) points to the mounting seat (8), and when the control spring (72) is in a natural state, the distance between the control rod (7) and the mounting seat (8) is greater than the distance between the airtight detection head (2) and the vent hole (44).

5. The HPD airtightness detection system according to claim 2, characterized in that: A return spring (64) is connected between the driving rod (63) and the lower template (4). When the return spring (64) is in a natural state, the waterproof door (5) blocks the vent hole (44).

6. The HPD airtightness detection system according to claim 1, characterized in that: A drainage hole (47) is provided on the side wall of the vent hole (44), one end of the drainage hole (47) is located on the side wall of the vent hole (44), and the other end is located at the end of the lower template (4). The end of the drainage hole (47) located on the side wall of the vent hole (44) is located on the side of the waterproof door (5) away from the detection groove (41), and a one-way valve (48) is installed on the end of the drainage hole (47) located on the lower template (4).

7. The HPD airtightness detection system according to claim 1, characterized in that: A support column (49) for supporting the HPD is provided at a corner of the receiving groove (42), and the upper end of the support column (49) is higher than the lower end of the ventilation groove (43).

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