HPD airtightness detection system

Abstract

The invention relates to the technical field of ultrasonic scanning detection, in particular to an HPD air tightness detection system which comprises a detection seat and an air tightness detection head, an upper template and a lower template are movably mounted on the detection seat, a concave detection groove is formed in the upper surface of the lower template, and a containing groove is formed in the detection groove. The containing grooves are communicated with each other through vent grooves, vent holes are formed in the side edge of the lower mold plate, sealing strips are arranged between the lower mold plate and the upper mold plate, a plurality of detection grooves right opposite to the containing grooves are formed in the upper mold plate, and a plurality of sealing pressing strips pressed on the periphery of the HPD are fixed to the lower surface of the upper mold plate. The HPD is placed in the containing groove, and the lower die plate is pressed on the upper die plate to be fixed. The air tightness detection head is inserted into the vent hole, the air tightness detection head introduces air with a certain pressure into the vent hole, and the leakage condition is judged according to the air pressure, so that the air tightness test of the upper template and the lower template is completed, and the use is convenient.

Description

Technical Field

[0001] This application relates to the technical field of ultrasonic scanning detection, and in particular to an HPD airtight detection system. Background Art

[0002] The HPD (Inverse Power Protection) power module is mainly used to monitor the active power of the generator, ensure reverse power protection when the generator sets are in parallel or grid-connected, and prevent equipment damage or safety accidents caused by reverse power. The ultrasonic microscope (SAT, Scanning Acoustic Tomography; also known as C-SAM, C-mode Scanning Acoustic Microscope) is a machine that detects by the different reflection rates and energies of high-frequency ultrasonic waves and materials with different densities, and is widely used in the back-end process of HPD to detect HPD.

[0003] When the ultrasonic microscope is used for monitoring, water is required as a medium to detect HPD. If the surface of the HPD chip comes into contact with moisture, it is easy to cause a short circuit. Therefore, HPD needs to be sealed before ultrasonic detection, and only the surface is exposed for detection.

[0004] After HPD is sealed, its sealing effect needs to be detected to prevent water seepage. However, there is currently a lack of a good detection method. Summary of the Invention

[0005] In order to perform a sealing test on HPD, this application provides an HPD airtight detection system.

[0006] The HPD airtight detection system provided by this application adopts the following technical solutions: An HPD airtight detection system includes a detection seat and an airtight detection head. An upper template and a lower template are movably installed on the detection seat. An inwardly concave detection groove is formed on the upper surface of the lower template. A plurality of accommodation grooves for placing HPD are formed in the detection groove. The accommodation grooves are interconnected through ventilation grooves. A ventilation hole that is connected to the detection groove and matches the airtight detection head is formed on the side of the lower template. A sealing strip is provided between the lower template and the upper template. The sealing strip surrounds the periphery of the detection groove. A plurality of observation grooves that are opposite to the accommodation grooves are formed on the upper template. A plurality of sealing pressure strips that press on the periphery of HPD are fixed on the lower surface of the upper template.

[0007] By adopting the above technical solution, the HPD is placed in the receiving groove, and the lower template is pressed on the upper template for fixing. The sealing strip is pressed on the HPD, and the sealing strip and the sealing strip seal the connection between the upper template and the lower template. The airtight detection head is inserted into the vent hole, and the airtight detection head passes a certain pressure of gas into the vent hole, and judges the leakage according to the air pressure, thereby completing the sealing test of the upper template and the lower template, which is easy to use.

[0008] Preferably, a waterproof door for opening and closing the vent is rotatably connected in the vent, a rotating rod rotatably connected to the vent horizontally 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 opened in the lower template, a control worm is rotatably connected in the control hole, the end of the rotating rod passes through the vent and is located in the control hole and a control worm wheel meshing with the control worm is coaxially fixed thereto.

[0009] By adopting the above technical solution, when performing an airtight test, the operator rotates the control worm, and the control worm rotates to drive the control worm wheel to rotate, thereby driving the rotating rod and the waterproof door to rotate, thereby opening the water hole, and the airtight detection head performs an airtight detection. After the upper and lower templates meet the airtightness test standards, they will be placed in water for ultrasonic scanning. At this time, the control worm is reversed, and the waterproof door blocks the vent hole to prevent water from entering the detection tank through the vent hole.

[0010] Preferably, a driving rod parallel to the axial direction of the vent hole is horizontally slidably connected in the lower template, a driving column is fixed to the outer wall of the driving rod, a spiral groove is formed on the outer wall of the end of the control worm away from the control worm wheel, and the driving column is slidably connected in the spiral groove.

[0011] 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.

[0012] 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 to the control rod, a driving hole matching the connecting rod is formed on the lower surface of the driving rod, the control rod and the detection seat are connected by a control spring, and when the control spring is in a natural state, the connecting rod is opposite to the driving hole.

[0013] By adopting the above technical solution, the lower template is installed on the detection seat, the connecting rod is inserted into the driving hole, the control rod and the driving rod are connected by the connecting rod, and the sliding of the control rod drives the sliding of the driving rod, thereby controlling the opening and closing of the waterproof door.

[0014] 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, and 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.

[0015] By adopting the above technical solution, the lower template is installed on the detection seat, and the upper template is installed on the upper template. The mounting seat slides toward the lower template, the airtight detection head is inserted into the vent, the mounting seat continues to slide toward the detection seat, the detection seat contacts the control rod and pushes the control rod to slide, the control rod drives the driving rod to slide, and finally drives the waterproof door to rotate to open the vent, and the airtight detection head starts to ventilate for airtightness test. During the sliding process of the airtight detection head, the waterproof door automatically opens the vent. When the detection is completed, the mounting seat retreats, and the control spring drives the control rod to reset, so that the waterproof door closes the vent. No additional manual operation is required, and it is easy to use.

[0016] 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.

[0017] 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.

[0018] 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 at the end of the lower template, the end of the drainage hole located on the side wall of the vent is located on the side of the waterproof door away from the detection groove, and a one-way valve is installed at the end of the drainage hole located on the lower template.

[0019] By adopting the above technical solution, the upper template and the lower template are usually reused. After the ultrasonic scanning is completed, the lower template will take out the HPD inside, replace it with a new HPD and perform an airtight test. When the airtight test is performed again, since the lower template has been immersed in water, it is easy for moisture to remain in the water hole. If the waterproof door is opened directly for ventilation, the moisture remaining in the vent will be blown into the detection tank, affecting the performance of the HPD. Therefore, when the airtight detection head is just inserted into the vent and the waterproof door is not opened, the airtight detection head starts to ventilate. At this time, the airflow blows the vent and the waterproof door. The airflow entrains the moisture in the vent and blows it 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 airtight detection head continues to move forward, the waterproof door gradually opens, and the airtight test is performed.

[0020] Preferably, support columns for supporting the HPD are provided at the corners of the accommodation groove, and the upper ends of the support columns are higher than the lower ends of the ventilation grooves.

[0021] By adopting the above technical solution, the support columns support the HPD, improving the stability of the HPD, and defining the installation limit of the HPD to ensure the smoothness of the ventilation groove and prevent occlusion.

[0022] In summary, the present application includes the following beneficial technical effects: Through the settings of the upper template, the lower template and the airtight detection head, the HPD is hermetically installed in the upper template and the lower template and tested by the airtight detection head, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the embodiment; Figure 2 is a schematic diagram of the structure with the upper template removed in the embodiment; Figure 3 is a schematic diagram of the structure for showing the water through holes in the embodiment; Figure 4 is Figure 3 an enlarged schematic diagram of part A in Figure 5 is a schematic diagram of the connection between the control rod and the driving rod in the embodiment.

[0024] DESCRIPTION OF THE REFERENCE NUMERALS: 1, detection base; 2, airtight detection head; 3, upper template; 31, observation groove; 32, sealing strip; 4, lower template; 41, detection groove; 42, accommodation groove; 43, ventilation groove; 44, ventilation hole; 45, sealing strip; 46, control hole; 47, drain hole; 48, check valve; 49, support column; 5, waterproof door; 51, rotating rod; 61, control worm; 611, spiral groove; 62, control worm gear; 63, driving rod; 631, driving column; 632, driving hole; 64, return spring; 7, control rod; 71, connecting rod; 72, control spring; 8, mounting seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes the present application in detail with reference to all the drawings. Embodiment

[0026] The embodiment of the present application discloses an HPD airtight detection system. Referring to Figure 1 , it includes a detection base 1, an airtight detection head 2, an upper template 3 and a lower template 4. The HPD is hermetically installed between the upper template 3 and the lower template 4, and the upper template 3 and the lower template 4 are placed on the detection base 1 for airtight testing by the airtight detection head 2.

[0027] Referring to Figure 1And Figure 2 On the upper surface of the lower template 4, a concave detection groove 41 is provided. In the detection groove 41, a receiving groove 42 for placing the HPD is provided. In this embodiment, four receiving grooves 42 are provided. The receiving grooves 42 communicate with each other through ventilation grooves 43. At the corners of the receiving groove 42, support columns 49 for supporting the HPD are provided. 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, and the support column 49 supports the HPD to improve the stability of the HPD. Moreover, 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.

[0028] Refer to Figure 1 And Figure 2 As shown in FIGS. and, a ventilation hole 44 communicating with the detection groove 41 is provided on the side of the lower template 4. The ventilation hole 44 cooperates with the airtight detection head 2. When the airtight detection head 2 is inserted into the ventilation hole 44, the ventilation hole 44 is sealed to ensure the airtightness. A sealing strip 45 is provided between the lower template 4 and the upper template 3. The sealing strip 45 is disposed around the detection groove 41. A plurality of observation grooves 31 facing the receiving grooves 42 are provided on the upper template 3. A plurality of sealing pressure strips 32 pressing on the periphery of the HPD are fixed on the lower surface of the upper template 3. The sealing pressure strips 32 are located around the observation grooves 31. The sealing strip 45 and the sealing pressure strip 32 seal the connection between the upper template 3 and the lower template 4 to improve the airtightness.

[0029] Refer to Figures 1 to 4 As shown in FIG., a waterproof door 5 for opening and closing the ventilation hole 44 is rotatably connected in the ventilation hole 44. When the lower template 4 is placed in water for ultrasonic scanning, the waterproof door 5 closes the ventilation hole 44 to prevent water flow from entering the detection groove 41. When performing the airtightness test, the waterproof door 5 opens the ventilation hole 44 to facilitate the test.

[0030] Refer to Figures 1 to 4 As shown in FIG., a rotating rod 51 horizontally rotatably connected in the ventilation hole 44 is fixed at the center of the waterproof door 5. The axis of the rotating rod 51 is perpendicular to the axis of the ventilation hole 44. The waterproof door 5 rotates around the rotating rod 51 to control the opening and closing of the ventilation hole 44.

[0031] Refer to Figures 1 to 4 As shown in FIG., a control hole 46 parallel to the ventilation 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 ventilation hole 44 and is coaxially fixed with a control worm gear 62 meshing with the control worm 61 in the control hole 46. The rotation of the control worm 61 drives the rotation of the control worm gear 62, thereby driving the rotation of the waterproof door 5 to realize the control of the opening and closing of the ventilation hole 44. Moreover, the worm and worm gear mechanism has self-locking property, and the waterproof door 5 cannot rotate by itself to open the waterproof door 5, thereby further improving the waterproof effect of the waterproof door 5.

[0032] Refer toFigures 1 to 4 , a driving groove parallel to the axial direction of the ventilation hole 44 is formed at the bottom of the lower template 4. The driving groove is located below the control hole 46 and communicates with the control hole 46. A driving rod 63 is horizontally slidably connected in the driving groove. 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 gear 62. The driving column 631 is slidably connected in the spiral groove 611. 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 ventilation hole 44. An operator pushes and pulls the driving rod 63, the driving column 631 slides in the spiral groove 611, and drives the control worm 61 to rotate through the spiral groove 611, so as to realize the control of the opening and closing of the ventilation hole 44.

[0033] Refer to Figures 1 to 5 , a control rod 7 parallel to the axial direction of the ventilation hole 44 is horizontally slidably connected on the detection seat 1. A connecting rod 71 is vertically fixed to the end of the control rod 7. A driving hole 632 matched with the connecting rod 71 is formed on the lower surface of the driving rod 63. A control spring 72 is connected between the control rod 7 and the detection seat 1. When the control spring 72 is in a natural state, the connecting rod 71 is aligned with 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, an operator can control the opening and closing of the ventilation hole 44 by sliding the control rod 7.

[0034] Refer to Figures 1 to 5 , a mounting seat 8 is horizontally slidably connected on the detection seat 1. The sliding direction of the mounting seat 8 is parallel to the axial direction of the ventilation hole 44. The airtight detection head 2 is installed on the mounting seat 8. One end of the control rod 7 away from the control hole 46 points to the mounting seat 8. 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 ventilation hole 44.

[0035] Refer to Figures 1 to 5 , when the lower template 4 is installed on the detection seat 1 for airtightness testing, the mounting seat 8 drives the airtight detection head 2 to move towards the lower template 4 until the airtight detection head 2 is inserted into the ventilation hole 44. The mounting seat 8 continues to move and abuts against the control rod 7 and pushes the control rod 7 to slide, and finally drives the waterproof door 5 to flip and open the ventilation hole 44. The airtight detection head 2 performs airtightness testing.

[0036] Refer to Figures 1 to 5A 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 on 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 slot 41, and a check valve 48 is installed on the end of the drainage hole 47 located on the lower template 4. The opening direction of the check valve 48 is from one side of the check valve 48 toward the waterproof door 5 to the other side.

[0037] Reference Figures 1 to 5 , the upper template 3 and the lower template 4 are usually reused. After the ultrasonic scanning is completed, the lower template 4 takes out the HPD inside, replaces it with a new HPD and performs an airtight test. When the airtight test is performed again, since the lower template 4 has been immersed in water, it is easy for residual moisture 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 residual moisture in the vent 44 will be blown into the detection tank 41, affecting the performance of the HPD. Therefore, when the airtight detection head 2 is just inserted into the vent 44 and the waterproof door 5 is not opened, the airtight detection head 2 starts to ventilate. At this time, the airflow blows the vent 44 and the waterproof door 5. The airflow entrains 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 airtight detection head 2 continues to move forward, the waterproof door 5 gradually opens, and the airtight test is performed.

[0038] The implementation principle of an HPD airtight 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 receiving groove 42, and the upper template 3 covers the lower template 4 and is fixedly connected by bolts or buckles. The mounting seat 8 drives the airtight detection head 2 to move toward the lower template 4. When the airtight detection head 2 is just inserted into the vent 44, the waterproof door 5 is not opened yet, and the airtight 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, and the waterproof door 5 flips to open the vent 44, and the airtight test begins.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An HPD airtight detection system, characterized in that: It includes a detection base (1) and an airtight detection head (2). An upper template (3) and a lower template (4) are movably installed on the detection base (1). A concave detection groove (41) is formed on the upper surface of the lower template (4). A number of receiving grooves (42) for placing HPD are formed in the detection groove (41). The receiving grooves (42) communicate with each other through air vent grooves (43). An air vent hole (44) that is connected to the detection groove (41) and matches the airtight detection head (2) is formed on the side of the lower template (4). A sealing strip (45) is provided between the lower template (4) and the upper template (3). The sealing strip (45) surrounds the periphery of the detection groove (41). A number of observation grooves (31) that are opposite to the receiving grooves (42) are formed on the upper template (3). A number of sealing press strips (32) that press on the periphery of the HPD are fixed on the lower surface of the upper template (3). A waterproof door (5) for opening and closing the air vent hole (44) is rotatably connected in the air vent hole (44). A rotating rod (51) that is horizontally rotatably connected in the air vent hole (44) is fixed at the center of the waterproof door (5). The axis of the rotating rod (51) is perpendicular to the axis of the air vent hole (44). A control hole (46) that is parallel to the air vent hole (44) is formed 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 air vent hole (44) and is located in the control hole (46), and a control worm gear (62) that meshes with the control worm (61) is coaxially fixed at the end of the rotating rod (51).

2. The HPD airtight detection system according to claim 1, wherein: A driving rod (63) that is horizontally slidably connected in the lower template (4) and is parallel to the axis direction of the air vent hole (44) is provided. A driving column (631) is fixed on 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) that is away from the control worm gear (62). The driving column (631) is slidably connected in the spiral groove (611).

3. The HPD airtight detection system according to claim 2, wherein: A control rod (7) that is horizontally slidably connected on the detection base (1) and is parallel to the axis direction of the air vent hole (44) is provided. A connecting rod (71) is vertically fixed on the control rod (7). A driving hole (632) that is matched with the connecting rod (71) is formed on the lower surface of the driving rod (63). The control rod (7) is connected to the detection base (1) through 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).

4. The HPD airtight detection system according to claim 3, wherein: A mounting seat (8) is slidably connected on the detection base (1). The sliding direction of the mounting seat (8) is the same as the axis direction of the air vent hole (44). The airtight detection head (2) is installed on the mounting seat (8). One end of the control rod (7) that is away from the connecting rod (71) points to the mounting seat (8). 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 air vent hole (44).

5. The HPD airtight detection system according to claim 2, characterized in that: A return spring (64) is connected between the drive rod (63) and the lower template (4). When the return spring (64) is in its natural state, the waterproof door (5) seals the ventilation hole (44).

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

7. The HPD airtight detection system according to claim 1, characterized in that: Support columns (49) for supporting the HPD are provided at the corners of the accommodation groove (42), and the upper ends of the support columns (49) are higher than the lower ends of the ventilation groove (43).

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