A leakage detection device for an automobile radiator

Abstract

The application discloses a liquid leakage detection device for an automobile radiator and relates to the technical field of automobile radiators. The application comprises a detection table and a radiator body. Further, the radiator body comprises a radiator pipe row arranged between two pressure detectors. The top and bottom of the radiator pipe row are respectively fixedly installed with a water inlet cavity plate and a water outlet cavity plate. One side of the water inlet cavity plate and the water outlet cavity plate is respectively fixedly installed with a water inlet joint and a water outlet joint. The application directly locates the position of the liquid leakage by using the seepage detection liquid to wet the porous water absorption plate, exerting pressure on the micro pressure plate under the influence of water absorption expansion and gravity, and then reverses the radiator body by using a reversing motor to detect the other side, so that the automatic detection of the two sides of the radiator body is realized, the position of the liquid leakage area is determined, the subsequent further strength detection and repair operation are provided with reference, and the false rejection rate of the radiator body is reduced.

Description

Technical Field

[0001] This invention relates to the field of automotive radiator technology, and more specifically to a leak detection device for automotive radiators. Background Technology

[0002] The automotive radiator is an essential component of the cooling system for a car's water-cooled engine. Based on the structure of the radiator core, automotive radiators can be classified into tube-fin type, tube-strip type, and plate type. According to the direction of coolant flow, they can be divided into longitudinal flow and crossflow types. After the automotive radiator is manufactured, a dry leak test is required. This involves injecting compressed air into the radiator and, based on the principles of leakage and pressure reduction, using pressure or differential pressure sensors, detecting pressure changes within the radiator to determine its quality.

[0003] Existing gas leak detection methods for automotive radiators are specifically divided into helium leak detection and positive / negative pressure leak detection. Helium leak detection involves filling the radiator assembly with helium and detecting the presence of helium molecules on the outside to determine if the core is leaking. Positive / negative pressure leak detection involves pressurizing or evacuating the radiator core, then closing the valve and detecting the internal pressure. If a change occurs, a leak can be identified. Both of these gas leak detection methods can quickly detect whether there is a leak in the automotive radiator, but they are difficult to directly and accurately locate the leak. This leads to the scrapping of automotive radiators that fail the test, or the need for additional specific testing to locate the leak. The former can easily cause repairable automotive radiators to be wrongly scrapped, while the latter increases the testing process and time. Therefore, a leak detection device for automotive radiators is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the problem that existing methods for detecting gas leaks in automotive radiators are difficult to directly and accurately locate the leak, leading to the scrapping of substandard automotive radiators or the need for additional specific leak location detection, resulting in false scrapping, increased testing procedures and time. This invention provides a leak detection device for automotive radiators.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0006] A leak detection device for an automotive radiator includes a detection platform and a radiator body. Further, the radiator body includes a heat dissipation tube array disposed between two pressure detectors. A water inlet plate and a water outlet plate are fixedly installed on the top and bottom of the heat dissipation tube array, respectively. A water inlet connector and a water outlet connector are fixedly installed on one side of the water inlet plate and the water outlet plate, respectively.

[0007] Furthermore, a water inlet pipe and a drain pipe are fixedly installed at the top and bottom of one of the pressure detectors, respectively. One end of the water inlet pipe and the drain pipe face the water inlet connector and the drain connector, respectively. A water inlet hose and a drain hose are fixedly installed at the other end of the water inlet pipe and the drain pipe, respectively. A vertically arranged lifting push rod is fixedly installed inside the detection platform. A clearance groove is opened at the top of the detection platform. The telescopic end of the lifting push rod passes through the clearance groove and is fixedly installed with a placement frame. The drain cavity plate is placed on top of the placement frame.

[0008] Furthermore, a sealing frame is fixedly installed on the side of the pressure detector facing the heat dissipation pipe array. The capacitive touch plate and the porous water absorption plate are both located inside the sealing frame. Sealing rings are fixedly installed on the top and bottom of one side of the sealing frame. The sealing rings are adapted to the water inlet connector and the drain connector. The water inlet pipe and the drain pipe are respectively fixedly inserted into the two sealing rings.

[0009] Furthermore, two support brackets are fixedly installed on the top of the detection platform. Each support bracket has a rotating shaft rotatably mounted on it. A common rotating frame is fixedly installed between the two rotating shafts. A rotating motor is fixedly installed on one side of one of the support brackets, and the output shaft of the rotating motor is drivenly connected to the rotating shaft on the same side. Two horizontally arranged bidirectional linear modules are fixedly installed on the top of each bidirectional linear module. Two symmetrically arranged bidirectional driving ends are drivenly installed on the top of the two bidirectional driving ends located at the same end. A common moving frame is fixedly installed on the top of each of the two moving frames, which are close to each other. A pressure detector is fixedly installed on the side of each of the two moving frames that is close to each other. The radiator body is disposed between the two pressure detectors. A capacitive pressure plate is fixedly installed on the side of the pressure detector close to the radiator body. Multiple evenly distributed miniature pressure plates are fixedly installed on the side of the capacitive pressure plate facing the radiator body. A porous water-absorbing plate is provided on the side of the capacitive pressure plate facing the radiator body. The porous water-absorbing plate is used to trigger the multiple miniature pressure plates corresponding to the location of the leakage area.

[0010] Furthermore, the porous absorbent plate includes a first water-proof grid plate fixedly installed on one side of the capacitive touch-sensitive substrate. A plurality of uniformly distributed micro porous absorbent columns are fixedly installed inside the first water-proof grid plate. The positions of the plurality of micro porous absorbent columns correspond to the positions of the plurality of micro pressure plates. A second water-proof grid plate is fixedly installed on the side of the capacitive touch-sensitive substrate facing the heat dissipation pipe array. The plurality of micro pressure plates are all located inside the second water-proof grid plate.

[0011] Furthermore, a plurality of uniformly distributed micro water-proof elastic rubber plates are fixedly installed inside the first water-proof grid plate, and the plurality of micro water-proof elastic rubber plates are respectively located between the plurality of the first water-proof grid plates and the plurality of micro pressure plates.

[0012] A top frame is fixedly installed on the top of the testing platform. A marking mechanism for marking the location of leakage is provided on the top of the top frame. Further, the marking mechanism includes two horizontally arranged Y-axis linear modules fixedly installed on the top of the top frame. A Y-axis drive end is driven and installed at the bottom of each of the two Y-axis drive ends. A horizontally arranged X-axis linear module is fixedly installed at the bottom of each of the two Y-axis drive ends. An X-axis drive end is driven and installed at the bottom of the X-axis linear module. A rotating arm is fixedly installed at the bottom of the X-axis drive end. A lifting frame is fixedly installed at the drive end of the rotating arm. A lifting screw is rotatably installed inside the lifting frame. A lifting motor is fixedly installed at the bottom of the lifting frame. The output shaft of the lifting motor is driven and connected to the lifting screw. A lifting sleeve is screwed onto the lifting screw. The lifting sleeve is slidably installed inside the lifting frame. A pigment nozzle is fixedly installed on one side of the lifting sleeve. A pigment bottle is fixedly installed on one side of the X-axis drive end. A conveying hose is fixedly installed at the output end of the pigment bottle. The bottom end of the conveying hose is connected to the pigment nozzle.

[0013] Furthermore, an air outlet hose is fixedly installed on the other side of the lifting sleeve, a drying fan is fixedly installed on one side of the X-axis drive end, an air conveying hose is fixedly installed at the air outlet end of the drying fan, and the bottom end of the material conveying hose is connected to the air outlet hose.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention utilizes a leak detection liquid to wet a porous absorbent plate. Under the influence of water absorption expansion and gravity, pressure is applied to a micro pressure plate to directly locate the leak. Then, a flipping motor drives the radiator body to reverse and detect the other side, realizing automatic detection of both sides of the radiator body, determining the location of the leak area, providing a reference for subsequent strength testing and repair work, and reducing the false failure rate of the radiator body.

[0016] 2. This invention sets up microporous absorbent cotton columns, which cause the leaking detection liquid to expand and extend, applying pressure to the corresponding micro pressure plate. At the same time, the microporous absorbent cotton columns and the micro pressure plate are separated by the first and second water-proof grid plates, which prevents the detection liquid from seeping into the surrounding area, greatly reduces the number of microporous absorbent cotton columns that expand, and makes the location of the leak more accurate.

[0017] 3. The present invention sets up a micro water-proof elastic rubber plate, so that the micro water-proof elastic rubber plate and the first water-proof grid plate form a semi-enclosed micro space, which wraps each micro porous water-absorbing cotton column inside, and separates the micro porous water-absorbing cotton column and the micro pressure plate on both sides, preventing the detection liquid from directly contacting the micro pressure plate and the capacitive touch plate and pressure detector on the back side, intercepting the leaked detection liquid, and avoiding contamination and electric shock short circuit;

[0018] 4. By setting up a marking mechanism, when a leak is detected in the current radiator body, the Y-axis linear module, the X-axis linear module and the lifting motor drive the lifting slide to move to the designated position, the rotating arm drives the pigment nozzle toward the leak area on the radiator body, and then its internal channel opens to spray the marking pigment on the leak area to achieve leakage marking, which is convenient for staff to check and repair.

[0019] 5. By setting up a drying fan, the present invention enables the air outlet hose to blow air towards the corresponding microporous absorbent cotton column while the pigment nozzle marks the leakage area, thereby accelerating the drying and rebound of the microporous absorbent cotton column for subsequent detection. At the same time, the rotating arm can drive the air outlet hose to the marked leakage area, so that the marking pigment and residual detection liquid in the leakage area can be dried quickly. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the heat dissipation pipe array and the lifting push rod of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the support frame and pressure detector of the present invention.

[0023] Figure 4 This is a three-dimensional structural diagram of the pressure detector and the porous water absorption plate of the present invention.

[0024] Figure 5 This is the present invention. Figure 4 Schematic diagram of the structure at point A in the middle;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the first waterproof grid plate and the micro porous absorbent cotton column of the present invention;

[0026] Figure 7 This is a three-dimensional structural diagram of the pressure detector and the miniature pressure plate of the present invention.

[0027] Figure 8 This is the present invention. Figure 7 Schematic diagram of the structure at point B;

[0028] Figure 9 This is a first-view three-dimensional structural diagram of the marking mechanism of the present invention;

[0029] Figure 10 This is a two-dimensional structural diagram of the marking mechanism of the present invention from a second perspective;

[0030] Reference numerals: 1. Testing table; 101. Clearing groove; 2. Support frame; 3. Tilting shaft; 4. Tilting frame; 5. Tilting motor; 6. Bidirectional linear module; 7. Bidirectional drive end; 8. Moving frame; 9. Pressure detector; 10. Capacitive touch plate; 11. Miniature pressure plate; 12. Porous absorbent plate; 1201. First water-proof grid plate; 1202. Miniature porous absorbent column; 1203. Miniature water-proof elastic sheet; 13. Second water-proof grid plate; 14. Water inlet pipe; 15. Water inlet hose; 16. Drain pipe; 17. Drain hose; 18. Heat dissipation 19. Pipeline; 20. Inlet chamber plate; 21. Inlet connector; 22. Drainage chamber plate; 23. Drainage connector; 24. Sealing frame; 25. Sealing ring; 26. Lifting push rod; 27. Placement rack; 28. Y-axis linear module; 29. ​​Y-axis drive end; 30. X-axis linear module; 31. X-axis drive end; 32. Rotating arm; 33. Lifting frame; 34. Lifting screw; 35. Lifting slide sleeve; 36. Pigment bottle; 37. Material conveying hose; 38. Pigment nozzle; 39. Drying fan; 40. Air outlet hose; 41. Air conveying hose; 42. Upper frame. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0035] like Figures 1 to 10 As shown, a leak detection device for automotive radiators includes a detection platform 1 and a radiator body, as shown. Figure 2 As shown, the radiator body includes a heat dissipation tube bank 18 disposed between two pressure detectors 9. A water inlet plate 19 and a drain plate 21 are fixedly installed on the top and bottom of the heat dissipation tube bank 18, respectively. A water inlet connector 20 and a drain connector 22 are fixedly installed on one side of the water inlet plate 19 and the drain plate 21, respectively.

[0036] like Figure 2 , Figure 3 As shown, specifically, a water inlet pipe 14 and a drain pipe 16 are fixedly installed at the top and bottom of one of the pressure detectors 9, respectively. One end of the water inlet pipe 14 and the drain pipe 16 faces the water inlet connector 20 and the drain connector 22, respectively. The other end of the water inlet pipe 14 and the drain pipe 16 are fixedly installed with a water inlet hose 15 and a drain hose 17, respectively. A vertically arranged lifting push rod 25 is fixedly installed inside the detection platform 1, such as... Figure 1 As shown, the top of the testing table 1 is provided with a clearance groove 101, the telescopic end of the lifting push rod 25 passes through the clearance groove 101 and is fixedly installed with a placement frame 26, and the drainage chamber plate 21 is placed on top of the placement frame 26.

[0037] In this embodiment, one end of the inlet hose 15 and the outlet hose 17 are respectively connected to the water source and the inlet and outlet of the circulating pump unit. The inlet pipe 14 and the outlet pipe 16 are equipped with solenoid valves for controlling opening and closing. The placement rack 26 is equipped with claws and support plates that are compatible with the drainage chamber plate 21, which are used to limit the drainage chamber plate 21 and the heat dissipation pipe row 18, etc.

[0038] More specifically, when the leakage detection device for automotive radiators is in use, the lifting push rod 25 inside the detection platform 1 drives the placement frame 26 through the clearance groove 101 and moves it to the top of the detection platform 1. Then, the heat sink 18, which has been welded with the water inlet plate 19, water inlet connector 20, drain plate 21, and drain connector 22, is placed on the placement frame 26 by manual or robotic arms or other handling mechanisms. The placement frame 26 initially limits the radiator body so that the radiator body can stand alone on the top of the placement frame 26. At this time, the manual or handling mechanism can release the radiator body.

[0039] like Figure 4 , Figure 5 As shown, specifically, a sealing frame 23 is fixedly installed on the side of the pressure detector 9 facing the heat dissipation pipe row 18. The capacitive touch plate 10 and the porous water absorption plate 12 are both located inside the sealing frame 23. Sealing rings 24 are fixedly installed on the top and bottom of the sealing frame 23 on one side. The sealing rings 24 are adapted to the water inlet connector 20 and the drain connector 22. The water inlet pipe 14 and the drain pipe 16 are respectively fixedly inserted into the two sealing rings 24.

[0040] More specifically, by setting the sealing frame 23 and sealing ring 24, when the porous water absorption plates 12 on both sides contact the two sides of the radiator body, the vertical edges of the sealing frames 23 on both sides will contact each other, and the horizontal edges will contact the two sides of the water inlet plate 19 and the water outlet plate 21 respectively. This will seal the contact surface between the radiator body and the porous water absorption plate 12. The two sealing rings 24 can seal the connection between the water inlet pipe 14 and the water inlet connector 20, and the connection between the water outlet pipe 16 and the water outlet connector 22, preventing the test liquid from leaking to the outside and reducing the risk of contamination and electric shock.

[0041] like Figure 1 , Figure 3 As shown, two support frames 2 are fixedly installed on the top of the testing platform 1. Specifically, each support frame 2 has a rotating shaft 3 rotatably mounted on it. A common rotating frame 4 is fixedly installed between the two rotating shafts 3. A rotating motor 5 is fixedly installed on one side of one of the support frames 2. The output shaft of the rotating motor 5 is driven and connected to the rotating shaft 3 on the same side. Two horizontally arranged bidirectional linear modules 6 are fixedly installed on the top of the rotating frame 4. Two symmetrically arranged bidirectional drive ends 7 are driven and installed on the top of each bidirectional linear module 6. A common moving frame 8 is fixedly installed on the top of the two bidirectional drive ends 7 located at the same end. Pressure detectors 9 are fixedly installed on the side of the two moving frames 8 that are close to each other. The heat sink body is located between the two pressure detectors 9. Figure 5 , Figure 7 As shown, a capacitive pressure plate 10 is fixedly installed on the side of the pressure detector 9 near the heat sink body. Multiple uniformly distributed miniature pressure plates 11 are fixedly installed on the side of the capacitive pressure plate 10 facing the heat sink body. A porous water absorption plate 12 is provided on the side of the capacitive pressure plate 10 facing the heat sink body. The porous water absorption plate 12 is used to trigger the multiple miniature pressure plates 11 corresponding to the location of the leakage area.

[0042] In this embodiment, the bidirectional linear module 6, the Y-axis linear module 27, and the X-axis linear module 29 can be linear actuators commonly used in the prior art, such as linear motor modules. They drive the mover, which serves as the drive end, to move linearly through the electromagnetic force of the motor stator. Alternatively, mechanisms such as screw thread sleeves, belts and pulleys, and chains and sprockets can be used to drive the bidirectional drive end 7, the Y-axis drive end 28, and the X-axis drive end 30, which serve as the drive end, to move linearly through threaded guidance or meshing. In addition to electrical energy, components such as cylinders and hydraulic rods can also be used as power sources. The linear modules in this embodiment can adopt technical solutions including but not limited to the above, depending on the actual situation.

[0043] More specifically, by setting up a porous water-absorbing plate 12, the drive ends at both ends of the bidirectional linear module 6 drive the two pressure detectors 9 to move towards the radiator body via the moving frame 8, until the water inlet pipes 14 and drain pipes 16 on the upper and lower sides of one of the pressure detectors 9 are initially connected to the water inlet connectors 20 and drain connectors 22 on the upper and lower sides of the radiator body, respectively. The radiator body can be temporarily suspended. At this time, the lifting push rod 25 drives the placement frame 26 to descend and disengage from the drain cavity plate 21. Then, the pressure detectors 9 on both sides continue to move to clamp the radiator body. Until the porous water-absorbing plates 12 on both sides are fully in contact with the radiator body, completely covering the heat sink 18 and the connection between the heat sink 18 and the inlet plate 19 and the drain plate 21, the inlet pipe 14 and the drain pipe 16 are fully inserted into the inlet connector 20 and the drain connector 22, respectively, and the test liquid is delivered to the inlet plate 19, the heat sink 18, and the drain plate 21 through the inlet pipe 14 and the inlet connector 20. At this time, the control valve on the drain pipe 16 is closed. When the delivery volume reaches the specified flow rate value, the control valve on the inlet pipe 14 is closed, and then the process is reversed. The rotating motor 5 drives the flipping shaft 3 to flip the flipping frame 4, causing both the pressure detector 9 and the radiator body to rotate to a horizontal position. If there is a leakage problem in the radiator body, the leaking detection liquid will wet the porous water absorption plate 12. Under the influence of water absorption expansion and gravity, the wetted part of the porous water absorption plate 12 will apply pressure to the multiple miniature pressure plates 11 at the corresponding position on the bottom. This pressure signal is converted into an electrical signal by the pressure detector 9, thereby directly locating the leakage location. Afterwards, the flipping motor 5 drives the radiator body to reset and flip in the opposite direction to a horizontal position, thus facilitating the operation of the radiator. The other side of the radiator is inspected to achieve automatic detection of both sides of the radiator body, determine the location of the leakage area, provide a reference for subsequent strength testing and repair work, and reduce the false failure rate of the radiator body. After the inspection is completed, the test liquid inside the radiator body is drained through the drain hose 17 and drain pipe 16. The above clamping operation is performed in reverse, and the pressure detectors 9 on both sides are controlled to release the radiator body. The lifting push rod 25 at the bottom drives the placement frame 26 to support and limit the radiator body again. Finally, the radiator body is removed to complete the leakage detection.

[0044] like Figure 5 , Figure 6 As shown, the porous absorbent plate 12 includes a first water-proof grid plate 1201 fixedly installed on one side of the capacitive touch-sensitive substrate 10. Specifically, a plurality of uniformly distributed micro porous absorbent columns 1202 are fixedly installed inside the first water-proof grid plate 1201. The positions of the plurality of micro porous absorbent columns 1202 correspond to the positions of the plurality of micro pressure plates 11. A second water-proof grid plate 13 is fixedly installed on the side of the capacitive touch-sensitive substrate 10 facing the heat dissipation tube row 18. The plurality of micro pressure plates 11 are all located inside the second water-proof grid plate 13.

[0045] In this embodiment, as Figure 6 As shown, the micro porous absorbent column 1202 has one end facing the outside of the first water-proof grid plate 1201, which can be fixedly connected to the inner wall of the first water-proof grid plate 1201 by means of adhesive bonding, etc. The other end has a square pyramidal structure and does not contact the inner wall of the first water-proof grid plate 1201. The micro porous absorbent column 1202 is made of porous material with large pore size, has high water absorption and expansion performance, and can rebound after water loss.

[0046] More specifically, by setting up microporous absorbent cotton columns 1202, when the leaked detection liquid comes into contact with the corresponding microporous absorbent cotton column 1202, it will be absorbed by the microporous absorbent cotton column 1202, thereby causing the microporous absorbent cotton column 1202 to expand and extend toward the capacitive touch substrate 10, thereby applying pressure to the corresponding micro pressure plate 11. At the same time, the first water-proof grid plate 1201 and the second water-proof grid plate 13 respectively separate the numerous microporous absorbent cotton columns 1202 and the micro pressure plate 11 in the micro grid, preventing the detection liquid from wetting the surrounding area, thereby greatly reducing the number of microporous absorbent cotton columns 1202 that expand, and making the location of the leak more accurate.

[0047] like Figure 6 As shown, specifically, a plurality of uniformly distributed micro water-proof elastic rubber plates 1203 are fixedly installed inside the first water-proof grid plate 1201, and the plurality of micro water-proof elastic rubber plates 1203 are respectively located between the plurality of first water-proof grid plates 1201 and the plurality of micro pressure plates 11.

[0048] More specifically, by setting up a miniature water-proof elastic adhesive plate 1203, the miniature water-proof elastic adhesive plate 1203 and the first water-proof grid plate 1201 form a semi-enclosed miniature space, which wraps each miniature porous absorbent cotton column 1202 inside, and separates the miniature porous absorbent cotton column 1202 and the miniature pressure plate 11 on both sides, preventing the detection liquid from directly contacting the miniature pressure plate 11 and the capacitive touch plate 10 and pressure detector 9 on the rear side, intercepting the leaked detection liquid, and avoiding contamination and electric shock short circuit.

[0049] like Figure 1 As shown, an upper frame 42 is fixedly installed on the top of the testing platform 1. A marking mechanism for marking the location of leaks is provided on the top of the upper frame 42. Specifically, the marking mechanism includes two horizontally arranged Y-axis linear modules 27 fixedly installed on the top of the upper frame 42. Figure 9 As shown, each Y-axis linear module 27 has a Y-axis drive end 28 installed at its bottom. Each pair of Y-axis drive ends 28 has a horizontally aligned X-axis linear module 29 fixedly installed at its bottom. Each X-axis linear module 29 has an X-axis drive end 30 installed at its bottom. A rotating arm 31 is fixedly installed at the bottom of the X-axis drive end 30. A lifting frame 32 is fixedly installed at the drive end of the rotating arm 31. A lifting screw 33 is rotatably installed inside the lifting frame 32. A lifting motor 34 is fixedly installed at the bottom of the lifting frame 32. The output shaft of the lifting motor 34 is drivenly connected to the lifting screw 33. A lifting sleeve 35 is screwed onto the lifting screw 33. The lifting sleeve 35 is slidably installed inside the lifting frame 32. A pigment nozzle 38 is fixedly installed on one side of the lifting sleeve 35. A pigment bottle 36 is fixedly installed on one side of the X-axis drive end 30. A conveying hose 37 is fixedly installed at the output end of the pigment bottle 36. The bottom end of the conveying hose 37 is connected to the pigment nozzle 38.

[0050] In this embodiment, the lifting screw 33, the lifting motor 34, the lifting sleeve 35, etc. constitute the screw lifting mechanism. Foldable dustproof mesh cloth connected to the lifting sleeve 35 can be set on both sides of the lifting frame 32 to protect the lifting frame 32. Alternatively, the screw lifting mechanism can be replaced with a transmission mechanism such as a linear module or a belt and pulley, chain and sprocket, etc.

[0051] More specifically, by setting up a marking mechanism, when a leak is detected in the current radiator body, the radiator body is supported on the placement frame 26 without being removed. The upper Y-axis linear module 27 and X-axis linear module 29 drive the lifting frame 32 to move between the radiator body and the porous water absorption plate 12. Then, the lifting motor 34 and the lifting screw 33 work together to drive the lifting slide sleeve 35 to move to the specified height. The rotating arm 31 then drives the lifting frame 32 to rotate as a whole, so that the pigment nozzle 38 faces the leak area on the radiator body. Then, its internal channel opens, and the marking pigment is sprayed on the leak area to mark the leak, which is convenient for staff to inspect and repair.

[0052] like Figure 10 As shown, specifically, an air outlet hose 40 is fixedly installed on the other side of the lifting slide sleeve 35, a drying fan 39 is fixedly installed on one side of the X-axis drive end 30, an air conveying hose 41 is fixedly installed at the air outlet end of the drying fan 39, and the bottom end of the material conveying hose 37 is connected to the air outlet hose 40.

[0053] More specifically, by setting up a drying fan 39, while the pigment nozzle 38 marks the leakage area, the air outlet hose 40 will be directed towards the microporous absorbent column 1202 that is wetted by the test liquid. Then, the drying fan 39 blows air through the air supply hose 41 and the capacitive touch plate 10 towards the corresponding microporous absorbent column 1202, accelerating the drying and rebound of the microporous absorbent column 1202 for subsequent testing. At the same time, the rotating arm 31 can drive the air outlet hose 40 to rotate to the marked leakage area, so that the marking pigment and residual test liquid in the leakage area can be dried quickly.

[0054] In summary: Before testing: The lifting push rod 25 inside the testing table 1 drives the placement frame 26 through the clearance groove 101 and moves to the top of the testing table 1. Then, the heat dissipation pipe array 18, which has been welded with the water inlet plate 19, water inlet connector 20, drain plate 21, and drain connector 22, is placed on the placement frame 26 by manual or robotic arms and other handling mechanisms. The placement frame 26 initially limits the position of the radiator body, so that the radiator body can stand alone on the top of the placement frame 26.

[0055] During testing: The drive ends at both ends of the bidirectional linear module 6 drive the two pressure detectors 9 to move toward the radiator body via the moving frame 8 until the water inlet pipes 14 and drain pipes 16 on the upper and lower sides of one of the pressure detectors 9 are initially connected to the water inlet connectors 20 and drain connectors 22 on the upper and lower sides of the radiator body, respectively. The radiator body can be temporarily suspended. At this time, the lifting push rod 25 drives the placement frame 26 to descend and detach from the drain cavity plate 21. Then, the pressure detectors 9 on both sides continue to move to clamp the radiator body until the porous water suction plates 12 on both sides are in complete contact with the radiator body, completely covering the heat sink 18 and the connection between the heat sink 18 and the water inlet cavity plate 19 and the drain cavity plate 21. The water inlet pipes 14 and drain pipes 16 are fully connected to the water inlet connectors 20 and 22, respectively, and the water inlet pipes 14 and 22 are connected to the water inlet connectors 20 and 22, respectively. The head 20 delivers the detection liquid to the inlet chamber plate 19, the heat dissipation pipe row 18, and the drain chamber plate 21. At this time, the control valve on the drain pipe 16 is closed. When the delivery volume reaches the specified flow rate, the control valve on the inlet pipe 14 is closed. Then, the flip motor 5 drives the flip shaft 3 to flip the flip frame 4, so that the pressure detector 9 and the radiator body are both turned to the horizontal. If there is a leakage problem in the radiator body, the leaked detection liquid will wet the porous water absorption plate 12, and the part of the porous water absorption plate 12 that is wetted will apply pressure to the multiple micro pressure plates 11 at the corresponding position at the bottom under the influence of water absorption expansion and gravity. Thus, the pressure signal of the pressure detector 9 is converted into an electrical signal, and the location of the leakage is directly located. Then, the flip motor 5 drives the radiator body to reset and flip in the opposite direction to the horizontal, and the other side of the radiator body is detected.

[0056] After testing: After the test is completed, the test liquid inside the radiator body is drained, and the clamping operation described above is reversed. The pressure detectors 9 on both sides are controlled to release the radiator body. The lifting push rod 25 at the bottom drives the placement frame 26 to support and limit the radiator body again. When leakage is detected, the upper Y-axis linear module 27 and X-axis linear module 29 drive the lifting frame 32 to move between the radiator body and the porous water absorption plate 12. Then, the lifting motor 34 and the lifting screw 33 work together to drive the lifting slide sleeve 35 to move to the specified height. The rotating arm 31 then drives the lifting frame 32 to rotate as a whole, so that the pigment nozzle 38 faces the leakage area on the radiator body. Then, its internal channel opens, and the marking pigment is sprayed on the leakage area to achieve leakage marking. Finally, the radiator body is removed to complete the leakage test.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A leak detection device for automotive radiators, characterized in that, The test platform (1) includes a test stand (1) and a radiator body. Two support brackets (2) are fixedly installed on the top of the test stand (1). A rotating shaft (3) is rotatably installed on each support bracket (2). A rotating frame (4) is fixedly installed between the two rotating shafts (3). A rotating motor (5) is fixedly installed on one side of one of the support brackets (2). The output shaft of the rotating motor (5) is driven and connected to the rotating shaft (3) on the same side. Two horizontally arranged bidirectional linear modules (6) are fixedly installed on the top of the rotating frame (4). Two symmetrically arranged bidirectional driving ends (7) are driven and installed on the top of each of the bidirectional linear modules (6). A moving frame (8) is fixedly installed on the top of the two bidirectional driving ends (7) located at the same end. The two moving frames (8) are close to each other. A pressure detector (9) is fixedly installed on one side of the heat sink. The heat sink body is located between the two pressure detectors (9). A capacitive pressure plate (10) is fixedly installed on the side of the pressure detector (9) near the heat sink body. A plurality of uniformly distributed micro pressure plates (11) are fixedly installed on the side of the capacitive pressure plate (10) facing the heat sink body. A porous water absorption plate (12) is provided on the side of the capacitive pressure plate (10) facing the heat sink body. The porous water absorption plate (12) is used to trigger the plurality of micro pressure plates (11) corresponding to the location of the leakage area. An upper frame (42) is fixedly installed on the top of the detection platform (1). A marking mechanism for marking the leakage location is provided on the top of the upper frame (42).

2. The leakage detection device for an automotive radiator according to claim 1, characterized in that, The radiator body includes a heat dissipation tube bank (18) disposed between the two pressure detectors (9). A water inlet plate (19) and a drain plate (21) are fixedly installed on the top and bottom of the heat dissipation tube bank (18), respectively. A water inlet connector (20) and a drain connector (22) are fixedly installed on one side of the water inlet plate (19) and the drain plate (21), respectively. A water inlet pipe (14) and a drain pipe (16) are fixedly installed on the top and bottom of one of the pressure detectors (9), respectively. One end of the water inlet pipe (14) and the drain pipe (16) faces the water inlet connector (20) and the drain connector (22), respectively. A water inlet hose (15) and a drain hose (17) are fixedly installed on the other end of the water inlet pipe (14) and the drain pipe (16), respectively. The porous absorbent plate (12) includes a first water-proof grid plate (1201) fixedly installed on one side of the capacitive touch-sensitive substrate (10). A plurality of uniformly distributed micro porous absorbent columns (1202) are fixedly installed inside the first water-proof grid plate (1201). The positions of the plurality of micro porous absorbent columns (1202) correspond to the positions of the plurality of micro pressure plates (11). A second water-proof grid plate (13) is fixedly installed on the side of the capacitive touch-sensitive substrate (10) facing the heat dissipation pipe row (18). The plurality of micro pressure plates (11) are all located inside the second water-proof grid plate (13).

3. The leakage detection device for an automotive radiator according to claim 2, characterized in that, The first waterproof grid plate (1201) has a plurality of uniformly distributed micro waterproof elastic rubber plates (1203) fixedly installed inside, and the plurality of micro waterproof elastic rubber plates (1203) are respectively located between the plurality of the first waterproof grid plates (1201) and the plurality of micro pressure plates (11).

4. The leakage detection device for an automotive radiator according to claim 2, characterized in that, The testing platform (1) is fixedly installed with a vertically arranged lifting push rod (25). The top of the testing platform (1) is provided with a clearance groove (101). The telescopic end of the lifting push rod (25) passes through the clearance groove (101) and is fixedly installed with a placement frame (26). The drainage cavity plate (21) is placed on the top of the placement frame (26).

5. A leakage detection device for an automotive radiator according to claim 2, characterized in that, The pressure detector (9) is fixedly mounted with a sealing frame (23) on the side facing the heat dissipation tube bank (18), and the capacitive pressure substrate (10) and the porous water absorption plate (12) are both located inside the sealing frame (23).

6. A leakage detection device for an automotive radiator according to claim 5, characterized in that, Sealing rings (24) are fixedly installed on the top and bottom of the sealing frame (23) on one side. The sealing rings (24) are adapted to the water inlet connector (20) and the drain connector (22). The water inlet pipe (14) and the drain pipe (16) are respectively fixedly inserted into the two sealing rings (24).

7. A leakage detection device for an automotive radiator according to claim 1, characterized in that, The marking mechanism includes two horizontally arranged Y-axis linear modules (27) fixedly installed on the top of the upper frame (42). Each Y-axis linear module (27) has a Y-axis drive end (28) driven to its bottom. The bottom of each pair of Y-axis drive ends (28) is fixedly equipped with the same horizontally arranged X-axis linear module (29). The bottom of each X-axis linear module (29) has an X-axis drive end (30) driven to its bottom. A rotating arm (31) is fixedly installed at the bottom of the X-axis drive end (30). A lifting frame (32) is fixedly installed at the drive end of the rotating arm (31). A lifting screw (33) is rotatably installed inside the lifting frame (32). A lifting motor (34) is fixedly installed at the bottom of the lifting frame (32). The output shaft of the lifting motor (34) is driven and connected to the lifting screw (33). A lifting sleeve (35) is screwed onto the lifting screw (33). The lifting sleeve (35) is slidably installed inside the lifting frame (32). A pigment nozzle (38) is fixedly installed on one side of the lifting sleeve (35). A pigment bottle (36) is fixedly installed on one side of the X-axis drive end (30). A material conveying hose (37) is fixedly installed at the output end of the pigment bottle (36). The bottom end of the material conveying hose (37) is connected to the pigment nozzle (38).

8. A leakage detection device for an automotive radiator according to claim 7, characterized in that, An air outlet hose (40) is fixedly installed on the other side of the lifting sleeve (35), a drying fan (39) is fixedly installed on one side of the X-axis drive end (30), an air conveying hose (41) is fixedly installed at the air outlet end of the drying fan (39), and the bottom end of the material conveying hose (37) is connected to the air outlet hose (40).

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