Equipment for automatically detecting leakage of copper pipe welding spot of heat exchanger

Abstract

The utility model discloses a heat exchanger copper pipe welding spot automatic leakage detection device which comprises a roller conveying line, the roller conveying line is provided with an avoiding groove, an inductor transmitting end and an inductor receiving end, the inductor transmitting end and the inductor receiving end are correspondingly arranged on the two sides of the roller conveying line, and the inductor transmitting end and the inductor receiving end are arranged on the roller conveying line. The sensor transmitting end and the sensor receiving end are arranged on the roller conveying line, the avoiding groove is located between the sensor transmitting end and the sensor receiving end, the blocking clamping device is located on the bottom side of the roller conveying line and corresponds to the avoiding groove, the robot base is arranged beside the roller conveying line, and the robot base is connected with the sensor transmitting end and the sensor receiving end. A robot module and a leak detection probe are arranged on the robot base, and the leak detection probe is arranged on the robot module. According to the utility model, the occupied space can be reduced, the working efficiency is improved, and the applicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic detection equipment, in particular to a device for automatic leakage detection of copper tube welding points of a heat exchanger. Background Art

[0002] To ensure product quality, the current production process of large heat exchangers requires leak testing of weld points. However, automated testing equipment is limited, large, and requires significant space. Furthermore, due to the wide variety of heat exchanger types and sizes, switching between models is cumbersome. Manual inspection is currently the most common method, resulting in low efficiency. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a device for automatic leakage detection of heat exchanger copper tube welding points, which can reduce the occupied space, improve work efficiency and enhance applicability.

[0004] The utility model is realized by the following technical scheme: a device for automatically detecting leakage of copper tube welding points of heat exchangers, comprising:

[0005] The roller conveyor line is provided with an avoidance groove.

[0006] A sensor transmitting end and a sensor receiving end are arranged on both sides of the roller conveyor line corresponding to each other, and the avoidance groove is located between the sensor transmitting end and the sensor receiving end.

[0007] A blocking clamping device is located at the bottom side of the roller conveyor line, and the blocking clamping device corresponds to the avoidance groove.

[0008] A robot base is arranged beside the roller conveyor line, and a robot module is arranged on the robot base.

[0009] A leak detection probe is provided on the robot module.

[0010] Furthermore, the blocking and clamping device includes a step frame, a lifting blocking mechanism, and a flip clamping mechanism. The step frame has steps I, II, and III whose heights gradually decrease. Two lifting blocking mechanisms are provided, and the two lifting blocking mechanisms are provided on step I. The flip clamping mechanism is provided on step II and step III. The flip clamping mechanism and the two lifting blocking mechanisms are distributed in a triangular shape.

[0011] Furthermore, the lifting and lowering blocking mechanism includes a blocking cylinder, a blocking plate, and a driving rod. The blocking cylinder is arranged on the bottom side of the step I. A through hole is provided on the step I. The piston rod of the blocking cylinder passes through the through hole and is fixed to the driving rod, and the driving rod is fixed to the blocking plate.

[0012] Furthermore, it also includes a linear bearing and a limiting shaft. The linear bearings are respectively provided on both sides of the through hole. The limiting shaft is provided in the linear bearing, and the limiting shaft is fixed to the blocking plate.

[0013] Furthermore, the flipping clamping mechanism includes a clamping cylinder, a clamping plate, a support frame, a flipping frame, and a flipping rod. The clamping cylinder is hinged on the step III, the support frame is arranged on the step II, the flipping frame is arranged on the support frame through a rotating axis, the clamping plate is arranged on the outside of the flipping frame, the flipping rod is arranged inside the flipping frame, and the piston rod of the clamping cylinder is hinged to the flipping rod.

[0014] Furthermore, it also includes two positioning rods, which are arranged upright and located on both sides of the support frame, and are used to limit the turning frame.

[0015] Furthermore, the roller conveyor line includes a frame, on which three groups of roller groups parallel to each other are arranged, the avoidance groove is divided into a blocking groove and a clamping groove, the clamping groove is arranged on the roller group located in the middle, and the clamping groove is used for the clamping plate to pass through, and there are two blocking grooves, and the two blocking grooves are arranged on the roller groups located on both sides, and the blocking groove is used for the blocking plate to pass through.

[0016] Furthermore, the leak detection probe is arranged on the robot module through a bracket. The robot module is also provided with a CCD camera. The leak detection probe corresponds to the CCD camera. A visual light source is provided on the bottom side of the CCD camera.

[0017] Furthermore, the sensor transmitting end and the sensor receiving end are respectively provided with three groups.

[0018] Furthermore, it also includes an electric box and an operating box, wherein the electric box is used to provide power, and the operating box is used to control the movement of the robot module, the blocking cylinder, and the clamping cylinder.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] By opening an avoidance groove on the roller conveyor line, setting sensor transmitters and sensor receivers on both sides of the roller conveyor line, setting the blocking clamping device under the roller conveyor line, and making the blocking clamping device correspond to the avoidance groove, setting a robot base next to the roller conveyor line, setting a robot module on the robot base, setting the leak detection probe and CCD camera on the robot module, when working, put the heat exchanger on the pallet, put the pallet on the roller conveyor line, and use the roller conveyor line to transport the heat exchanger. During the transportation process, the sensor transmitter and the sensor receiver are used to sense and control the action of the blocking clamping device to perform rough positioning of the heat exchanger. The robot module drives the CCD camera to perform X-ray of the heat exchanger. The Y and Z directions are photographed for comparative analysis, and each welding point of the heat exchanger is inspected at close range by means of a leak detection probe. If a leak is detected, an alarm is sounded, and the leak detection probe stays at the leak point. The alarm is lifted after manual marking, and the robot module 7 continues to drive the CCD camera and the leak detection probe to inspect the next welding point. After the inspection is completed, the blocking clamping device is released, allowing the heat exchanger to continue to be transported forward. The layout between the various devices is compact, and the equipment is miniaturized, which can reduce the floor space. In addition, the robot module is used to drive the leak detection probe and the CCD camera for multi-directional welding point inspection, which can adapt to the welding point inspection of a variety of different models of heat exchangers, making this device applicable to a variety of models and solving the problem of troublesome model switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the utility model;

[0022] Figure 2 This is a schematic structural diagram of the blocking and clamping device of the present utility model;

[0023] Figure 3 This is a rear view of the blocking clamping device of the present invention;

[0024] Figure 4 It is a top view of the blocking and clamping device of the present invention;

[0025] Figure 5 This is a structural diagram of the roller conveyor line of the present utility model;

[0026] Figure 6 This is a schematic structural diagram of the robot module of the present utility model;

[0027] Figure 7 This is a structural diagram of the lifting and blocking mechanism of the utility model blocking the tray;

[0028] Figure 8 This is a structural diagram of the flip clamping mechanism of the present invention clamping a pallet.

[0029] Explanation of reference numerals: 1- roller conveyor line, 2- avoidance groove, 3- sensor transmitting end, 4- sensor receiving end, 5- blocking clamping device, 6- robot base, 7- robot module, 8- leak detection probe, 9- step frame, 10- lifting blocking mechanism, 11- flip clamping mechanism, 12- step I, 13- step II, 14- step III, 15- blocking cylinder, 16- blocking plate, 17- driving rod, 18- through hole, 19- linear bearing, 20 -Limiting shaft, 21-Clamping cylinder, 22-Clamping plate, 23-Support frame, 24-Turning frame, 25-Turning rod, 26-Rotating axis, 27-Positioning rod, 28-Frame, 29-Roller group, 30-Blocking groove, 31-Clamping groove, 32-Bracket, 33-CCD camera, 34-Visual light source, 35-First sensor, 36-Second sensor, 37-Third sensor, 38-Electric box, 39-Operation box, 40-Pallet, 41-Heat exchanger. DETAILED DESCRIPTION

[0030] Figures 1 to 8 The present invention provides a schematic structural diagram of an embodiment of a device for automatic leakage detection of copper tube welds in a heat exchanger, comprising:

[0031] The roller conveyor line 1 is provided with an avoidance groove 2.

[0032] The sensor transmitting end 3 and the sensor receiving end 4 are correspondingly arranged on both sides of the roller conveyor line 1 , and the avoidance groove 2 is located between the sensor transmitting end 3 and the sensor receiving end 4 .

[0033] The blocking clamping device 5 is located at the bottom side of the roller conveyor line 1 , and the blocking clamping device 5 corresponds to the avoidance groove 2 .

[0034] The robot base 6 is arranged beside the roller conveyor line 1 , and a robot module 7 is arranged on the robot base 6 .

[0035] The leak detection probe 8 is provided on the robot module 7 .

[0036] The leak detection probe 8 is set on the robot module 7 through the bracket 32. The robot module 7 is also provided with a CCD camera 33. The leak detection probe 8 and the CCD camera 33 correspond to each other. A visual light source 34 is set on the bottom side of the CCD camera 33.

[0037] The blocking and clamping device 5 includes a step frame 9, a lifting blocking mechanism 10, and a flip clamping mechanism 11. The step frame 9 has steps Ⅰ12, step Ⅱ13, and step III14 whose heights gradually decrease. There are two lifting blocking mechanisms 10, and the two lifting blocking mechanisms 10 are arranged on step Ⅰ12. The flip clamping mechanism 11 is arranged on step Ⅱ13 and step III14. The flip clamping mechanism 11 and the two lifting blocking mechanisms 10 are distributed in a triangle.

[0038] The lifting blocking mechanism 10 includes a blocking cylinder 15, a blocking plate 16, and a driving rod 17. The blocking cylinder 15 is arranged on the bottom side of the step Ⅰ 12. A through hole 18 is provided on the step Ⅰ 12. The piston rod of the blocking cylinder 15 passes through the through hole 18 and is fixed to the driving rod 17. The driving rod 17 is fixed to the blocking plate 16.

[0039] It also includes a linear bearing 19 and a limiting shaft 20 . The linear bearings 19 are respectively provided on both sides of the through hole 18 . The limiting shaft 20 is provided in the linear bearing 19 , and the limiting shaft 20 is fixed to the blocking plate 16 .

[0040] The flipping clamping mechanism 11 includes a clamping cylinder 21, a clamping plate 22, a support frame 23, a flipping frame 24, and a flipping rod 25. The clamping cylinder 21 is hinged on the step III14, the support frame 23 is set on the step II13, the flipping frame 24 is set on the support frame 23 through the rotating shaft 26, the clamping plate 22 is set on the outside of the flipping frame 24, the flipping rod 25 is set inside the flipping frame 24, and the piston rod of the clamping cylinder 21 is hinged to the flipping rod 25.

[0041] The support frame 23 further includes two positioning rods 27 . The two positioning rods 27 are arranged upright and located on both sides of the support frame 23 . The two positioning rods 27 are used to limit the position of the flip frame 24 .

[0042] The roller conveyor line 1 includes a frame 28, on which three groups of roller groups 29 parallel to each other are arranged. The avoidance groove 2 is divided into a blocking groove 30 and a clamping groove 31. The clamping groove 31 is arranged on the roller group 29 located in the middle. The clamping groove 31 is used for the clamping plate 22 to pass through. There are two blocking grooves 30, which are arranged on the roller groups 29 located on both sides. The blocking groove 30 is used for the blocking plate 16 to pass through.

[0043] There are three sets of sensor transmitting ends 3 and sensor receiving ends 4 respectively.

[0044] The sensor transmitting end 3 is divided into a first sensor transmitting end, a second sensor transmitting end, and a third sensor transmitting end. The first sensor transmitting end, the second sensor transmitting end, and the third sensor transmitting end each correspond to a sensor receiving end 4 .

[0045] The first sensor transmitting end and its corresponding sensor receiving end constitute a first sensor 35 , the second sensor transmitting end and its corresponding sensor receiving end constitute a second sensor 36 , and the third sensor transmitting end and its corresponding sensor receiving end constitute a third sensor 37 .

[0046] It also includes an electric box 38 and an operating box 39. The electric box 38 is used to provide power, and the operating box 39 is used to control the movement of the robot module 7, the blocking cylinder 15, and the clamping cylinder 21.

[0047] Working principle: The heat exchanger 41 is placed on the roller conveyor line 1 through the tray 40, and the roller conveyor line 1 transports the heat exchanger 41. During this process, the first sensor 35 senses whether there is a tray 40 at the set station of the roller conveyor line 1. If there is, the first sensor 35 and the second sensor 36 cooperate to control the lifting and lowering blocking mechanism 10 of the blocking clamping device 5 to block the tray 40. The third sensor 37 senses whether the tray 40 is in place. If so, the flipping clamping mechanism 11 of the blocking clamping device 5 is controlled to clamp the tray 40. 0 performs rough positioning, thereby performing rough positioning of the heat exchanger 41, the robot module 7 drives the CCD camera 33 to take pictures of the heat exchanger 41 in the X, Y, and Z directions for comparative analysis, and uses the leak detection probe 8 to perform close-range detection on each welding point of the heat exchanger 41. If a leak is detected, an alarm is triggered, and the leak detection probe 8 stays at the leak point. After manual marking, the alarm is lifted, and the robot module 7 continues to drive the CCD camera 33 and the leak detection probe 8 to detect the next welding point. After the detection is completed, the blocking clamping device 5 is released, so that the heat exchanger 41 continues to be transported forward.

[0048] When the first sensor 35, the second sensor 36, and the third sensor 37 perform sensing, a signal is transmitted to the sensor receiving end 4 through the sensor transmitting end 3. If the sensor receiving end 4 does not receive the signal sent by the sensor transmitting end 3, it is determined that there is a pallet 40 at the set position of the roller conveyor line 1 or the pallet 40 is in place.

[0049] When the lifting blocking mechanism 10 is in motion, the blocking cylinder 15 drives the driving rod 17 to drive the blocking plate 16 to extend from the blocking groove 30 of the roller conveyor line 1, and uses the blocking plate 16 to block the supporting legs of the tray 40 (such as Figure 7 As shown), when the flip clamping mechanism 11 is in action, the clamping cylinder 21 drives the flip rod 25 to rotate, and the flip rod 25 drives the flip frame 24 to rotate, so that the clamping plate 22 extends from the clamping groove 31 of the roller conveyor line 1 and flips the clamping plate 22 to a vertical state, thereby using the clamping plate 22 and the blocking plate 16 to cooperate with each other for positioning (as shown). Figure 8 shown).

[0050] During the lifting and lowering process of the blocking plate 16 , the limiting shaft 20 is lifted and lowered in the linear bearing 19 . The limiting shaft 20 is used to limit the blocking plate 16 , thereby improving the lifting and lowering stability of the blocking plate 16 .

[0051] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention should be included in the patent scope of this case.

Claims

1. A device for automatic leakage detection of heat exchanger copper tube welding points, characterized in that: include: Roller conveyor line, wherein the roller conveyor line is provided with an avoidance groove; A sensor transmitting end and a sensor receiving end, wherein the sensor transmitting end and the sensor receiving end are correspondingly arranged on both sides of the roller conveyor line, and the avoidance groove is located between the sensor transmitting end and the sensor receiving end; A blocking clamping device, the blocking clamping device is located on the bottom side of the roller conveyor line, and the blocking clamping device corresponds to the avoidance groove; A robot base, the robot base being arranged beside the roller conveyor line, and a robot module being arranged on the robot base; A leak detection probe is provided on the robot module.

2. The device for automatic leakage detection of heat exchanger copper tube welding points according to claim 1, characterized in that: The blocking and clamping device includes a step frame, a lifting blocking mechanism, and a flip clamping mechanism. The step frame has steps I, II, and III with gradually decreasing heights. Two lifting blocking mechanisms are provided, and the two lifting blocking mechanisms are provided on step I. The flip clamping mechanism is provided on step II and step III. The flip clamping mechanism and the two lifting blocking mechanisms are distributed in a triangular shape.

3. The device for automatic leakage detection of heat exchanger copper tube welding points according to claim 2, characterized in that: The lifting and lowering blocking mechanism includes a blocking cylinder, a blocking plate, and a driving rod. The blocking cylinder is arranged on the bottom side of the step I. A through hole is provided on the step I. The piston rod of the blocking cylinder passes through the through hole and is fixed to the driving rod, and the driving rod is fixed to the blocking plate.

4. The device for automatic leakage detection of heat exchanger copper tube welding points according to claim 3, characterized in that: It also includes a linear bearing and a limiting shaft. The linear bearings are respectively arranged on both sides of the through hole. The limiting shaft is arranged in the linear bearing, and the limiting shaft is fixed to the blocking plate.

5. The device for automatic leakage detection of heat exchanger copper tube welding points according to claim 3, characterized in that: The flipping clamping mechanism includes a clamping cylinder, a clamping plate, a support frame, a flipping frame, and a flipping rod. The clamping cylinder is hinged on the step III, the support frame is arranged on the step II, the flipping frame is arranged on the support frame through a rotating axis, the clamping plate is arranged on the outside of the flipping frame, the flipping rod is arranged inside the flipping frame, and the piston rod of the clamping cylinder is hinged to the flipping rod.

6. The device for automatic leakage detection of heat exchanger copper tube welding points according to claim 5, characterized in that: It also includes two positioning rods, which are arranged upright and located on both sides of the support frame. The two positioning rods are used to limit the turning frame.

7. The device for automatic leakage detection of heat exchanger copper tube welding points according to claim 5, characterized in that: The roller conveyor line includes a frame, on which three groups of roller groups parallel to each other are arranged. The avoidance groove is divided into a blocking groove and a clamping groove. The clamping groove is arranged on the roller group located in the middle. The clamping groove is used for the clamping plate to pass through. There are two blocking grooves, and the two blocking grooves are arranged on the roller groups located on both sides. The blocking groove is used for the blocking plate to pass through.

8. The device for automatic leakage detection of heat exchanger copper tube welding points according to claim 7, characterized in that: The leak detection probe is arranged on the robot module through a bracket. The robot module is also provided with a CCD camera. The leak detection probe corresponds to the CCD camera. A visual light source is arranged on the bottom side of the CCD camera.

9. The device for automatic leakage detection of heat exchanger copper tube welding points according to claim 8, characterized in that: The sensor transmitting end and the sensor receiving end are respectively provided with three groups.

10. The device for automatic leakage detection of heat exchanger copper tube welding points according to claim 9, characterized in that: It also includes an electric box and an operating box, wherein the electric box is used to provide power, and the operating box is used to control the movement of the robot module, the blocking cylinder, and the clamping cylinder.

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