Transportation Test Equipment for Plate-Fin Heat Exchangers

Abstract

The present invention relates to the technical field of heat exchangers, and particularly to a conveying and testing device for plate-fin heat exchangers, including a bottom plate, an outer support mechanism, an internal pressure component and a placement table. A first lifting plate and a second lifting plate are arranged on the bottom plate. A placement table is arranged on the first lifting plate. A conveying frame is installed on the outside of the placement table. A support frame plate is movably connected to the conveying frame, and a fin plate is placed on the support frame plate. The outer support mechanism is installed on the top surface of the bottom plate. The outer support mechanism includes a conveying guide rail, a first cylinder, an adjusting frame, an outer support piece and a push plate. In this solution, the possibility of difficult detection due to the special shape of the fins is reduced, the possibility of continuous manual operation during the test is reduced, the effect of multi-angle detection of the fins by the device is improved, testing of different surfaces is realized, the results are more accurate, the blockage detection effect of the device is also improved, the blockage analysis of the equipment after long-term use can be carried out, and the discrimination can be carried out intuitively.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly to a conveying and testing device for plate-fin heat exchangers. Background Art

[0002] A plate-fin heat exchanger is an efficient heat exchange device that forms a compact flow channel by stacking multiple plates and fins. Its core lies in enhancing the heat transfer efficiency by expanding the heat transfer area and strengthening fluid turbulence, especially suitable for scenarios with small temperature differences, large flow rates, or limited space.

[0003] Currently, during the heat exchange process of plate heat exchangers, the fins are easily subjected to pressures or impact forces of different magnitudes and directions. Under the action of these forces, the shape of the fins may deform. If the acting force is too large, some fins will undergo plastic deformation and cannot rebound, resulting in the phenomenon of fin lodging or twisting, which will lead to a reduction in the cross-sectional area of the fluid channel, an increase in flow resistance, and finally blockage. Moreover, the deformation will cause cracks in the partition plates or brazing layers. For this reason, a conveying and testing device for plate-fin heat exchangers is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art and propose a conveying and testing device for plate-fin heat exchangers.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A conveying and testing device for plate-fin heat exchangers includes a bottom plate, an outer support mechanism, an internal pressure component, and a placement table. A first lifting plate and a second lifting plate are provided on the bottom plate. A placement table is provided on the first lifting plate, a conveying frame is installed outside the placement table, a support frame plate is movably connected to the conveying frame, and a fin plate is placed on the support frame plate;

[0007] The outer support mechanism is installed on the top surface of the bottom plate. The outer support mechanism includes a conveying guide rail, a first cylinder, an adjustment frame, an outer support piece, and a push plate. The first cylinder is installed on the bottom side of the conveying guide rail, the adjustment frame is movably connected to the conveying guide rail, and the outer support piece and the push plate are respectively connected to the upper and lower sides of the adjustment frame;

[0008] The internal pressure component is provided on the second lifting plate. The internal pressure component includes a support seat, a sliding rod, a lifting frame, an internal pressure piece, and a test frame. The sliding rod and the lifting frame are horizontally connected to the support seat, the internal pressure piece is movably connected to the sliding rod, the test frame is connected to the lifting frame, and the positions of the internal pressure piece and the test frame correspond to each other up and down;

[0009] The placement table is installed at the rear side of the bottom plate. A plurality of limit posts are installed on the placement table. The fin plates are alternately placed on the placement table. An external plug-in is arranged outside the limit posts. The external plug-in includes a detection frame, a plug rod, a first corresponding plate and a second support plate. The second support plate is connected to the outside of the detection frame. The first corresponding plate is connected inside the second support plate. The plug rods are arranged and installed on the first corresponding plate, and the plug rods are inserted into the fin plates.

[0010] Preferably, the first lifting plate and the second lifting plate are respectively installed on both sides of the bottom plate. One end of the conveying frame is installed on the first lifting plate, and the other end is installed on the second lifting plate. An adjusting screw rod and a horizontal rod are respectively installed on the conveying frame. A motor is arranged at one end of the adjusting screw rod. The supporting frame plate is movably connected to the outside of the adjusting screw rod and the horizontal rod. There are two conveying frames, and the two conveying frames are symmetrically installed on the first lifting plate and the second lifting plate. The supporting frame plates are connected to the conveying frames, and clamping plates are installed on the supporting frame plates. A placement table is erected on one side of each conveying frame. A horizontal groove is opened on the conveying frame. The supporting frame plate is movably connected in the horizontal groove. The fin plates are placed between the clamping plates on both sides.

[0011] Preferably, the outer support mechanism is located between the first lifting plate and the second lifting plate. A plurality of first cylinders are arranged and all installed on the bottom plate. There are two conveying guide rails, and the two ends of the two conveying guide rails are respectively erected on the telescopic ends of the two first cylinders. A driving screw rod is installed in each of the conveying guide rails. The bottom end of the adjusting frame is threadedly connected to the driving screw rod. The adjusting frame is in an "H" shape. A limiting shaft is installed between the top ends of the adjusting frame. Outer support pieces are movably connected to both sides of the limiting shaft. The outer support pieces are in a "human" shape. The outer support pieces are connected to the fin plates with the direction facing down. Through grooves are symmetrically opened on the inner wall of the bottom side of the adjusting frame. The two ends of the push plate are movably connected between the through grooves. A plurality of inclined blocks are fixed on the push plate. A plurality of outer support rods are arranged on the adjusting frame. The top ends of the outer support rods are connected between the outer support pieces. The bottom ends of the outer support rods are spring-connected to the horizontal bottom surface of the adjusting frame. The bottom ends of the outer support rods are movably connected to the inclined blocks. A second cylinder is also installed on the adjusting frame, and the telescopic end of the second cylinder is connected to one of the inclined blocks.

[0012] Preferably, an extrusion end head is further installed on the top end of the adjusting frame. Fixed frames are installed on the outside of the conveying guide rails. A plurality of support plates are arranged and installed between the fixed frames. Inner push rods are spring-connected in the support plates. A plurality of pressing rods are further arranged on the bottom surfaces of the support plates. The pressing rods are spring-connected in the support plates. One end of the pressing rod is connected to the inner push rod, and the other end is connected to the top surface of the fin plate. The top end of the extrusion end head is connected to the inner push rod.

[0013] Preferably, a plurality of the support seats are provided and are all arranged and installed on the top surface of the second lifting plate. A vertical lead screw is provided in each of the support seats, and a driving motor is installed on the top end of the vertical lead screw. Two sets of the slide bars and the lifting frames are provided, and the two sets of slide bars and the lifting frames are connected between the corresponding vertical lead screws. The slide bars are threadedly connected to the upper side portion of the vertical lead screws, and the lifting frames are threadedly connected to the lower side portion of the vertical lead screws. A parallel lead screw is further installed in the lifting frame, and a micro motor is provided at one end of the parallel lead screw. The inner pressing member is slidably connected between the two slide bars, and the test frame is threadedly connected to the outside of the parallel lead screw.

[0014] Preferably, the inner pressing member includes a first frame plate, a third cylinder, a guide block and an intermediate pressing rod. Both ends of the first frame plate are connected to the slide bars, and third cylinders are symmetrically installed on the top surfaces at both ends of the first frame plate. The telescopic ends of the third cylinders penetrate to the bottom side of the first frame plate. The guide block is installed on the telescopic end of the third cylinder. An "eight"-shaped card slot is formed in the guide block. Bottom frames are provided on the bottom surfaces at both ends of the first frame plate, and a "one"-shaped bottom groove is formed in the bottom frames. Two intermediate pressing rods are provided, and the two intermediate pressing rods are connected in the card slot and the bottom groove. The fin plate is connected between the two intermediate pressing rods, and the intermediate pressing rods are connected to the outer wall surface of the fin plate. Driving frames are rotatably connected to both ends of the first frame plate, and first rotating blocks are installed on one side of each driving frame. The first rotating blocks are rotationally limited outside the driving frames.

[0015] Preferably, second rotating blocks are installed on both ends of the test frame, and the driving frames are connected to the outside of the second rotating blocks. A plurality of test members are provided on the top surface of the test frame. The test member includes an outer exhibition board, a vertical block and a trapezoidal piece. The vertical block is fixed on the test frame. Two outer exhibition boards are provided, and the tops of the two outer exhibition boards are rotatably connected to both sides of the top end of the vertical block. Both sides of the outer exhibition board are connected to the inside of the fin plate. A groove is formed in the vertical block, and vertical rods are symmetrically installed in the groove. The trapezoidal piece is located in the middle of the vertical rods. A central groove is formed in the trapezoidal piece. An inner rod is installed on the bottom surface of the groove, and the inner rod is connected in the central groove. The inner rod and the trapezoidal piece are connected by a spring. A pressure sensor is installed on the inner rod. Side wall sliders are installed on both sides of the trapezoidal piece, and the side wall sliders are connected to the outside of the vertical rods. A magnetic block is installed at the bottom end of the side wall slider. An electromagnetic block is installed on the bottom surface of the groove, and the magnetic block and the electromagnetic block are magnetically connected. The trapezoidal piece is connected between the bottom ends of the outer exhibition boards.

[0016] Preferably, lifting lead screws are installed inside the limit posts. A lifting piece is threadedly connected to the lifting lead screw. The detection frame is placed inside the lifting piece. Rotating tubes are symmetrically installed on both sides of the detection frame. A synchronous belt is connected between the tails of the rotating tubes. A rotating motor is provided at the tail of one of the rotating tubes. Internal threads are provided on the inner wall surface of the rotating tube. Screw rods are threadedly connected inside the rotating tubes. The second support plate is fixed to one ends of the two screw rods. Adjustment slots are correspondingly provided on the detection frame and the second support plate. The first corresponding plate and the second corresponding plate are respectively connected to the corresponding adjustment slots of the detection frame and the second support plate. Tightening screws are provided on the detection frame and the second support plate. A plurality of insertion rods are arranged between the first corresponding plate and the second corresponding plate. One end of the insertion rod is movably connected to the second corresponding plate. A tail spring is connected between the other end of the insertion rod and the rear side of the first corresponding plate. Two groups of insertion rods are provided on the detection frame. The two groups of insertion rods are respectively located on the upper layer and the lower layer of the detection frame, and the two are at a ninety-degree angle to each other.

[0017] The beneficial effects of the present invention are as follows:

[0018] In this solution, due to the setting of the support frame plate, it is convenient to convey the fin plates one by one. The cooperation of the outer support rod and the outer support piece can realize squeezing the fin plates from the bottom side to both sides. Due to the setting of the pressing rod, the fin plates during the squeezing process can be limited and pressed.

[0019] Due to the setting of the support seat, it can control the simultaneous rising and falling of the sliding rod and the lifting frame, so as to avoid collisions during the movement of the fin plates. The inner pressing parts can clamp the two sides of the fin plates inward. The trapezoidal pieces connected by springs can continuously open the outer exhibition plates outward. The outer exhibition plates will contact between the inner walls of the fin plates. The deformation degree of the fin plates can be identified through the pressure induction of the springs and the contact positions of the outer exhibition plates and the trapezoidal pieces, and corresponding adjustments will also be made according to the size of the inner walls.

[0020] Due to the setting of the insertion rods, the heat exchanger after long-term use can be detected for blockage, and the degree of blockage can be judged. The connection of the tail spring, the insertion rod and the first corresponding plate can intuitively show the internal blockage situation.

[0021] This solution reduces the possibility of difficult detection due to the special shape of the fins, reduces the possibility of continuous manual operation during the test process, improves the effect of multi-angle detection of the fins by the device, realizes testing on different surfaces, and the results are more accurate. It also improves the blockage detection effect of the device, can analyze the blockage of the equipment after long-term use, and can be intuitively identified. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the conveying and testing equipment for plate-fin heat exchangers proposed by the present invention;

[0023] Figure 2 Structural schematic diagram of the conveying rack and the placing table part;

[0024] Figure 3 Structural schematic diagram of the support frame plate part;

[0025] Figure 4 Structural schematic diagram of the outer support component part;

[0026] Figure 5 Front view structural schematic diagram of the outer support component part;

[0027] Figure 6 For Figure 5 Structural schematic diagram of part A in;

[0028] Figure 7 Structural schematic diagram of the adjusting frame and the conveying guide rail part;

[0029] Figure 8 Structural schematic diagram of the adjusting frame and the outer support piece part;

[0030] Figure 9 Structural schematic diagram of the inner pressure component part;

[0031] Figure 10 Front view structural schematic diagram of the inner pressure component part;

[0032] Figure 11 For Figure 10 Structural schematic diagram of part B in;

[0033] Figure 12 Structural schematic diagram of the inner pressure part;

[0034] Figure 13 Front view structural schematic diagram of the inner pressure part;

[0035] Figure 14 Side view structural schematic diagram of the inner pressure part;

[0036] Figure 15 Structural schematic diagram of the fin plate and the test rack part;

[0037] Figure 16 Front view structural schematic diagram of the fin plate and the test rack part;

[0038] Figure 17 Structural schematic diagram of the test piece part;

[0039] Figure 18 Front view structural schematic diagram of the test piece part;

[0040] Figure 19 Side view structural schematic diagram of the test piece part;

[0041] Figure 20 It is a structural schematic diagram of the limit post and the placement table part;

[0042] Figure 21 It is a structural schematic diagram of the external plug-in part;

[0043] Figure 22 It is a structural schematic diagram of the detection frame part;

[0044] Figure 23 It is a structural schematic diagram of the fin plate part.

[0045] In the figure: 1. Bottom plate; 11. First lifting plate; 12. Second lifting plate; 13. Support frame plate; 14. Conveyor frame; 15. Placement table; 2. Outer support mechanism; 21. Fixed frame; 22. Support plate; 221. Inner push rod; 222. Pressing rod; 23. Conveyor guide rail; 24. First cylinder; 25. Push plate; 26. Outer support piece; 27. Adjusting frame; 271. Outer support rod; 272. Extrusion end; 28. Second cylinder; 3. Inner pressure component; 31. Support seat; 32. Slide rod; 33. Lifting frame; 34. Inner pressure piece; 341. First frame plate; 342. Third cylinder; 343. Driving frame; 344. Intermediate pressing rod; 345. Guide block; 346. First rotating block; 35. Test frame; 351. Second rotating block; 36. Test piece; 361. Outer exhibition plate; 362. Vertical block; 363. Trapezoidal piece; 364. Side wall slider; 365. Electromagnetic block; 366. Vertical rod; 367. Inner rod; 4. Fin plate; 5. Limit post; 51. Lifting piece; 52. Placement table; 53. Lifting lead screw; 6. External plug-in; 61. Detection frame; 611. Adjusting groove; 62. Rotating pipe; 63. Rotating motor; 64. Synchronous belt; 65. Screw; 66. Second frame plate; 67. First corresponding plate; 671. Second corresponding plate; 68. Inserting rod; 69. Tail end spring. Specific embodiments

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0047] Example 1: Refer to Figure 1-8 , a conveying and testing device for a plate-fin heat exchanger, including a bottom plate 1, an outer support mechanism 2, an inner pressure component 3, and a placement table 52. A first lifting plate 11 and a second lifting plate 12 are provided on the bottom plate 1. A placement table 15 is provided on the first lifting plate 11. A conveyor frame 14 is installed outside the placement table 15. A support frame plate 13 is movably connected to the conveyor frame 14. A fin plate 4 is placed on the support frame plate 13;

[0048] The outer support mechanism 2 is installed on the top surface of the bottom plate 1. The outer support mechanism 2 includes a conveying guide rail 23, a first cylinder 24, an adjusting frame 27, an outer support piece 26 and a push plate 25. The first cylinder 24 is installed on the bottom side of the conveying guide rail 23. The adjusting frame 27 is movably connected to the conveying guide rail 23. The outer support piece 26 and the push plate 25 are respectively connected to the upper and lower sides of the adjusting frame 27;

[0049] The inner pressure assembly 3 is arranged on the second lifting plate 12. The inner pressure assembly 3 includes a support seat 31, a sliding rod 32, a lifting frame 33, an inner pressure piece 34 and a test frame 35. The sliding rod 32 and the lifting frame 33 are horizontally connected to the support seat 31. The inner pressure piece 34 is movably connected to the sliding rod 32. The test frame 35 is connected inside the lifting frame 33. The positions of the inner pressure piece 34 and the test frame 35 correspond to each other up and down;

[0050] The placing table 52 is installed at the rear side of the bottom plate 1. A plurality of limit columns 5 are installed on the placing table 52. The fin plates 4 are alternately placed on the placing table 52. An outer plug-in 6 is arranged outside the limit columns 5. The outer plug-in 6 includes a detection frame 61, a plug rod 68, a first corresponding plate 67 and a second frame plate 66. The second frame plate 66 is connected to the outside of the detection frame 61. The first corresponding plate 67 is connected inside the second frame plate 66. The plug rods 68 are arranged and installed on the first corresponding plate 67. The plug rods 68 are inserted into the fin plates 4.

[0051] Specifically, the first lifting plate 11 and the second lifting plate 12 are respectively installed on both sides of the bottom plate 1. One end of the conveying frame 14 is installed on the first lifting plate 11, and the other end is installed on the second lifting plate 12. An adjusting screw rod and a horizontal rod are respectively installed on the conveying frame 14. One end of the adjusting screw rod is provided with a motor for controlling the front and back position adjustment of the support frame plate 13 to achieve the effect of conveying the fin plates 4. The support frame plate 13 is movably connected to the outside of the adjusting screw rod and the horizontal rod. There are two conveying frames 14, and the two conveying frames 14 are symmetrically installed on the first lifting plate 11 and the second lifting plate 12. Support frame plates 13 are connected to both of the conveying frames 14. Clamping plates are installed on the support frame plates 13 to facilitate the placement of the fin plates 4. A placing table 15 is erected on one side of each of the conveying frames 14. Horizontal grooves are formed on the conveying frames 14. The support frame plates 13 are movably connected in the horizontal grooves to support the support frame plates 13, so that the fin plates 4 can be placed more stably. The fin plates 4 are placed between the clamping plates on both sides.

[0052] In this embodiment, the outer support mechanism 2 is located between the first lifting plate 11 and the second lifting plate 12. A plurality of first cylinders 24 are provided and are all installed on the bottom plate 1. Two conveying guide rails 23 are provided. The two ends of the two conveying guide rails 23 are respectively erected on the telescopic ends of the two first cylinders 24 to control the up and down lifting of the adjusting frame 27. Driving lead screws are installed in the conveying guide rails 23. The bottom end of the adjusting frame 27 is threadedly connected to the driving lead screw to realize the left and right adjustment of its position, which is convenient for testing different positions of the fin plate 4. The adjusting frame 27 is in an "H" shape. A limiting shaft is installed between the top ends of the adjusting frame 27 to limit the movement of the outer support piece 26. Outer support pieces 26 are movably connected to both sides of the limiting shaft. The outer support piece 26 is in a "human" shape. The outer support piece 26 is connected to the groove of the fin plate 4 facing downward. According to the opening amplitude of the outer support piece 26, the fin plate 4 at the corresponding position can be pushed outwards. Through grooves are symmetrically formed on the inner wall of the bottom side of the adjusting frame 27. Both ends of the push plate 25 are movably connected between the through grooves. A plurality of inclined blocks are fixed on the push plate 25. A plurality of outer support rods 271 are provided on the adjusting frame 27. The top ends of the outer support rods 271 are connected between the outer support pieces 26 to realize the outward opening of the two outer support pieces 26. The bottom end of the outer support rod 271 is spring-connected to the horizontal bottom surface of the adjusting frame 27. The bottom end of the outer support rod 271 is movably connected to the inclined block. According to the movement of the push plate 25, the up and down lifting of the outer support rod 271 is achieved. A second cylinder 28 is also installed on the adjusting frame 27. The telescopic end of the second cylinder 28 is connected to one of the inclined blocks to push the push plate 25 back and forth.

[0053] An extrusion end 272 is also installed on the top end of the adjusting frame 27 to extend into the support plate 22 to extrude the inner push rod 221. Fixed frames 21 are installed on the outer sides of the conveying guide rails 23. A plurality of support plates 22 are arranged and installed between the fixed frames 21. The positions of the support plates 22 correspond to the top surfaces of the fin plates 4. Inner push rods 221 are spring-connected in the support plates 22 to facilitate extrusion and pushing, and are also convenient for quick rebound after losing the resistance. A plurality of pressing rods 222 are also provided on the bottom surface of the support plate 22. The pressing rods 222 are spring-connected in the support plates 22 to extend downward after extrusion. One end of the pressing rod 222 is connected to the inclined inner push rod 221, and the other end is connected to the top surface of the fin plate 4 to press the fin plate 4 to prevent the fin plate 4 from floating up and down when the outer support piece 26 opens. The top end of the extrusion end 272 is connected to the inner push rod 221, and this connection is also inclined.

[0054] Working principle: Control the support frame plate 13 to move to one side of the placement table 15, take a fin plate 4 to be tested and place it between the two support frame plates 13. After placement, control the support frame plate 13 to move backward to move the fin plate 4 between the outer support mechanisms 2, and stop after moving to the specified test position.

[0055] Then, control the adjusting frame 27 to move on the conveying guide rail 23 and stop at the specified position. Control the first air cylinder 24 to extend upward, gradually move the outer support piece 26 into one of the slots of the fin plate 4 with the opening facing downward. During the insertion process, the extrusion end 272 will push upward into the support plate 22, and the inner push rod 221 will be extruded and translated to one side. During the translation process, the pressing rod 222 will be pushed downward, and the pressing rod 222 will press against the top surface of the corresponding fin plate 4. At this time, the outer support piece 26 also reaches the specified position. Then, control the second air cylinder 28 to push forward, and the push plate 25 will move to the other side. During the moving process, the inclined block will squeeze and push the outer support rod 271 upward. During the upward movement of the outer support rod 271, the two sides of the outer support piece 26 will be unfolded outward. After unfolding, the outer support piece 26 will contact the inner walls on both sides of the fin plate 4. The second air cylinder 28 continues to extend, and the outer support rod 271 will extend upward again, and the opening amplitude of the outer support piece 26 will be larger. At this time, the corresponding inner walls on both sides of the fin plate 4 will be subjected to an outward expanding force, and according to the deformation size during expansion, the deformation condition of the fin plate 4 after being stressed can be tested;

[0056] After testing one area, reverse the above operations to restore the outer support piece 26 and the adjusting frame 27 to their original positions. Then, move the adjusting frame 27 to the next testing position so as to detect the conditions of multiple areas, and then conduct unified analysis according to the results.

[0057] Embodiment 2:

[0058] Refer to Figure 9-19 , on the basis of Embodiment 1, the following technical solutions are further provided:

[0059] A plurality of support seats 31 are provided and are all arranged and installed on the top surface of the second lifting plate 12. Vertical lead screws are provided in each of the support seats 31. Opposite external threads are provided at both ends of the vertical lead screws to act on the approach and separation of the slide rods 32 and the lifting frames 33. A driving motor is installed at the top end of the vertical lead screw. Two groups of slide rods 32 and lifting frames 33 are provided. The two groups of slide rods 32 and lifting frames 33 are connected between the corresponding vertical lead screws so as to complete the erection of the inner pressing member 34 and the test frame 35. The slide rods 32 are threadedly connected to the upper part of the vertical lead screw, and the lifting frames 33 are threadedly connected to the lower part of the vertical lead screw. A parallel lead screw is further installed in the lifting frame 33 to act on controlling the test frame 35 to move in the horizontal direction. A micro motor is provided at one end of the parallel lead screw. The inner pressing member 34 is slidably connected between the two slide rods 32, and the test frame 35 is threadedly connected to the outside of the parallel lead screw.

[0060] The internal pressure member 34 includes a first frame plate 341, a third cylinder 342, a guide block 345 and an intermediate pressing rod 344. Both ends of the first frame plate 341 are slidably connected to the sliding rod 32. Third cylinders 342 are symmetrically installed on the top surfaces at both ends of the first frame plate 341. The telescopic ends of the third cylinders 342 penetrate to the bottom side of the first frame plate 341. The guide block 345 is installed on the telescopic ends of the third cylinders 342. An "eight"-shaped card slot is provided on the guide block 345. When the guide block 345 is pressed down, it acts on the two intermediate pressing rods 344 on both sides to move closer to the middle to achieve the effect of squeezing the fin plate 4. Bottom frames are provided on the bottom surfaces at both ends of the first frame plate 341. An "one"-shaped bottom slot is provided on the bottom frames to act on the limit support of the intermediate pressing rods 344. There are two intermediate pressing rods 344. The two intermediate pressing rods 344 are connected in the card slot and the bottom slot. The fin plate 4 is connected between the two intermediate pressing rods 344. The intermediate pressing rods 344 are connected to the outer wall surface of the fin plate 4, so as to test the squeezed fin plate 4. Driving frames 343 are rotatably connected to both ends of the first frame plate 341 to drive the test frame 35 to move synchronously to achieve the effect of efficient detection. First rotating blocks 346 are installed on one side of each driving frame 343. The first rotating blocks 346 are rotationally limited outside the driving frames 343 to act on the positioning of the driving frames 343.

[0061] Second rotating blocks 351 are installed at both ends of the test stand 35. The driving frame 343 is connected to the outside of the second rotating block 351, so as to complete the stable connection between the internal pressure member 34 and the test stand 35. And even when the detection position is changed during the test, the second rotating block 351 and the driving frame 343 still remain connected. A plurality of test members 36 are arranged on the top surface of the test stand 35. The test member 36 includes an outer exhibition board 361, a vertical block 362 and a trapezoidal piece 363. The vertical block 362 is fixed on the test stand 35. There are two outer exhibition boards 361. The tops of the two outer exhibition boards 361 are rotatably connected to both sides of the top of the vertical block 362. Both sides of the outer exhibition board 361 are connected inside the fin plate 4. A groove is formed in the vertical block 362. Vertical rods 366 are symmetrically installed in the groove. The trapezoidal piece 363 is located in the middle of the vertical rods 366. A central groove is formed on the ground surface of the trapezoidal piece 363. An inner rod 367 is installed on the bottom surface of the groove. The inner rod 367 is connected to the central groove. A spring connection is formed between the inner rod 367 and the trapezoidal piece 363 to push the trapezoidal piece 363 upward, so as to realize the continuous open state of the outer exhibition board 361 in contact with the fin plate 4. A pressure sensor is installed on the inner rod 367. According to the pressure magnitude of the sensor, the rising height of the trapezoidal piece 363 can be identified, and indirectly, the opening amplitude of the outer exhibition board 361 can be identified. The higher the popping height, the greater the opening amplitude of the outer exhibition board 361. And contact type induction strips are also installed on the inclined surfaces on both sides of the trapezoidal piece 363. The opening amplitude of the outer exhibition board 361 is secondarily identified through the contact position between the outer exhibition board 361 and the induction strip. The combination of the two data can more accurately test the notch change of the fin plate 4 with the opening downward. Side wall sliders 364 are installed on both sides of the trapezoidal piece 363. The side wall sliders 364 are connected to the outside of the vertical rods 366 to realize the stable up and down movement of the trapezoidal piece 363. Magnets are installed at the bottom ends of the side wall sliders 364. Electromagnets 365 are installed on the bottom surface of the groove. A magnetic connection is formed between the magnet and the electromagnet 365 to position the trapezoidal piece 363 during the period when it is not in use. The trapezoidal piece 363 is connected between the bottom ends of the outer exhibition boards 361.

[0062] Working principle: Control the support frame plate 13 to move again, move the fin plate 4 that was expanded and tested in Embodiment 1, and move it to the middle position of the internal pressure assembly 3. After reaching the specified position, align the internal pressure member 34 with the test frame 35. Rotating the first rotating block 346 will drive the drive frame 343 to turn downwards by 180 degrees, so that it is connected to one side of the second rotating block 351. Rotating the second rotating block 351 will limit the movement of the drive frame 343. Then control the parallel lead screw to move, and move the test frame 35 to the bottom side of one of the fin plates 4 that was expanded in Embodiment 1. Under the connection of the drive frame 343, the internal pressure member 34 will also move to the upper side of the specified fin plate 4 position. Then control the vertical lead screw to rotate, and the slide rods 32 located at the upper ends on both sides and the lifting frame 33 located at the lower end will move towards the middle position synchronously until the test piece 36 moves into the slot of the fin plate 4 with the opening facing downwards, and the middle pressure rod 344 moves into the slots with the openings facing upwards on both sides of the slot of the fin plate 4 with the opening facing downwards;

[0063] Then control the electromagnet 365 to lose power. At this time, the magnetic connection between the magnet and the electromagnet 365 is lost. Under the action of the spring, the trapezoidal piece 363 will pop up upwards. During the popping-up process, the trapezoidal piece 363 will push the outer exhibition plates 361 on both sides outwards until the outer exhibition plates 361 contact the slot of the fin plate 4 with the opening facing downwards. At this time, according to the pressure sensor, the popping-up height of the trapezoidal piece 363 can be identified, and the opening amplitude of the outer exhibition plates 361 can be obtained. And according to the contact position of the outer exhibition plates 361 on the induction strip, the opening amplitude of the outer exhibition plates 361 can also be obtained, so as to more accurately obtain the size of the slot opening of the fin plate 4 with the opening facing downwards. Through the outer expansion deformation situation in Embodiment 1, the overall resilience of the fin plate 4 can be reflected, and it can be tested whether the fin plate 4 can fully recover or undergo plastic deformation and cannot rebound after losing the outer expansion force in Embodiment 1, and the test data is recorded in real time;

[0064] Then control the third air cylinder 342 to extend downwards. The guide block 345 will move downwards, and the middle pressure rods 344 on both sides will squeeze towards the middle position. At this time, the inner walls on both sides of the corresponding fin plate 4 will be subjected to extrusion force. During the extrusion process, the fin plate 4 may deform. If deformation occurs, the outer exhibition plates 361 inside it will be squeezed, and the trapezoidal piece 363 will be adjusted downwards. According to the pressure sensor and the induction strip, the extrusion amplitude situation can be identified. After the third air cylinder 342 extends to the specified position and then retracts, the middle pressure rods 344 will return. At this time, the extrusion force that expands the fin plate 4 will start to recover, and the outer exhibition plates 361 and the trapezoidal piece 363 will again follow the situation of the inner wall of the fin plate 4 for matching movement. According to the result after the movement, the resilience recovery degree of the fin plate 4 can be identified;

[0065] Then repeat the above operations to perform the same operations on other areas of the fin plate 4 to obtain the quality situation of the entire fin plate 4.

[0066] Embodiment 3:

[0067] Referring to Figure 20-23 , on the basis of Embodiment 2, the following technical solutions are further provided:

[0068] Lifting screw rods 53 are installed in the limiting columns 5. A lifting piece 51 is threadedly connected to the lifting screw rod 53. The detection frame 61 is placed in the lifting piece 51 to act on the up and down lifting of the detection frame 61, so as to detect multiple layers of fin plates 4. Rotating pipes 62 are symmetrically installed on both sides of the detection frame 61. A synchronous belt 64 is connected between the tails of the rotating pipes 62. A rotating motor 63 is arranged at the tail of one of the rotating pipes 62. Internal threads are provided on the inner wall surface of the rotating pipe 62. Screw rods 65 are threadedly connected in the rotating pipes 62 respectively. The telescoping of the screw rods 65 can be realized by the rotation of the rotating pipes 62. The second support plate 66 is fixed to one ends of the two screw rods 65. Adjusting grooves 611 are correspondingly provided on the detection frame 61 and the second support plate 66. The first corresponding plate 67 and the second corresponding plate 671 are respectively connected in the corresponding adjusting grooves 611 of the detection frame 61 and the second support plate 66 to act on the left and right adjustment of the position of the insertion rod 68, which is convenient for inserting into the fin plates 4 at different positions to realize the comprehensive detection inside. The detection frame 61 and the second support plate 66 are provided with tightening screws for convenient positioning. A plurality of insertion rods 68 are arranged between the first corresponding plate 67 and the second corresponding plate 671. One end of the insertion rod 68 is movably connected in the second corresponding plate 671 to achieve the support effect on the front end of the insertion rod 68. A tail spring 69 is connected between the other end of the insertion rod 68 and the rear side surface of the first corresponding plate 67. After the front end of the insertion rod 68 is subjected to resistance, the tail end of the insertion rod 68 will pull the tail spring 69 backward. The situation of internal blockage can be judged by the amplitude and duration of the pulling. Two groups of insertion rods 68 are arranged on the detection frame 61. The two groups of insertion rods 68 are respectively located in the upper layer and the lower layer of the detection frame 61, and the included angle between them is 90 degrees, which can realize the detection of the alternately placed fin plates 4, and the detection is more rapid and intuitive.

[0069] Working principle: When the fin group in the heat exchanger is clogged after long-term use, when the blockage degree needs to be detected, the entire fin group is placed between the limit columns 5, and then the rotating motors 63 on both sides are controlled to rotate. Driven by the synchronous belt 64, the rotating tube 62 on the detection frame 61 will rotate. During the rotation process, the screw 65 will gradually be retracted into the rotating tube 62. At this time, one end of the insertion rod 68 will penetrate the second corresponding plate 671 and continue to enter the groove of the fin plate 4. When there is no When there is a blockage, the rod 68 will be smoothly inserted into it. When there is a slight blockage in the slot, when the rod 68 is inserted into the blocked area, the impurities will resist the rod 68, and the tail end spring 69 will be briefly pulled back by the rod 68. With the continuous insertion of the rod 68, the accumulated force at the end of the rod 68 will pierce the impurity area, and the tail end spring 69 will return to its original state. When there is a large amount of blockage in the slot, the rod 68 will be continuously resisted, and the tail end spring 69 will continue to stretch backwards. At this time, the blockage in each slot can be identified;

[0070] After the test is completed, the fin group can be disassembled, and the fin plate 4 can be subjected to the operations in Example 1 and Example 2 again to complete the test of the fin plate 4 after long-term use.

[0071] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0072] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A conveying and testing device for a plate-fin heat exchanger, characterized in that, Comprising: A bottom plate (1) is provided with a first lifting plate (11) and a second lifting plate (12). A placing table (15) is arranged on the first lifting plate (11). A conveying frame (14) is installed outside the placing table (15). A supporting frame plate (13) is movably connected to the conveying frame (14). A fin plate (4) is placed on the supporting frame plate (13). An outer support mechanism (2) is installed on the top surface of the bottom plate (1). The outer support mechanism (2) includes a conveying guide rail (23), a first cylinder (24), an adjusting frame (27), an outer support piece (26) and a push plate (25). The first cylinder (24) is installed on the bottom side of the conveying guide rail (23). The adjusting frame (27) is movably connected to the conveying guide rail (23). The outer support piece (26) and the push plate (25) are respectively connected to the upper and lower sides of the adjusting frame (27). The outer support mechanism (2) is located between the first lifting plate (11) and the second lifting plate (12). A plurality of first cylinders (24) are provided and are all installed on the bottom plate (1). Two conveying guide rails (23) are provided. The two ends of the two conveying guide rails (23) are respectively erected on the telescopic ends of the two first cylinders (24). Driving lead screws are installed in the conveying guide rails (23). The bottom end of the adjusting frame (27) is threadedly connected to the driving lead screw. The adjusting frame (27) is in an "H" shape. A limiting shaft is installed between the top ends of the adjusting frame (27). Outer support pieces (26) are movably connected to both sides of the limiting shaft. The outer support piece (26) is in a "human" shape. The outer support piece (26) is connected to the fin plate (4) with a downward direction. Through grooves are symmetrically formed on the inner wall of the bottom side of the adjusting frame (27). The two ends of the push plate (25) are movably connected between the through grooves. A plurality of inclined blocks are fixed on the push plate (25). A plurality of outer support rods (271) are provided on the adjusting frame (27). The top ends of the outer support rods (271) are connected between the outer support pieces (26). The bottom ends of the outer support rods (271) are connected to the horizontal bottom surface of the adjusting frame (27) by springs. The bottom ends of the outer support rods (271) are movably connected to the inclined blocks. A second cylinder (28) is further installed on the adjusting frame (27). The telescopic end of the second cylinder (28) is connected to one of the inclined blocks. An inner pressing assembly (3) is arranged on the second lifting plate (12). The inner pressing assembly (3) includes a support seat (31), a sliding rod (32), a lifting frame (33), an inner pressing piece (34) and a testing frame (35). The sliding rod (32) and the lifting frame (33) are horizontally connected to the support seat (31). The inner pressing piece (34) is movably connected to the sliding rod (32). The testing frame (35) is connected in the lifting frame (33). The positions of the inner pressing piece (34) and the testing frame (35) correspond to each other vertically. Placement table (52), the placement table (52) is installed at the rear side of the bottom plate (1), a plurality of limiting columns (5) are installed on the placement table (52), the fin plates (4) are alternately placed on the placement table (52), an external plug-in (6) is arranged outside the limiting column (5), the external plug-in (6) includes a detection frame (61), a plug rod (68), a first corresponding plate (67) and a second frame plate (66), the second frame plate (66) is connected to the outside of the detection frame (61), the first corresponding plate (67) is connected inside the second frame plate (66), the plug rods (68) are arranged and installed on the first corresponding plate (67), and the plug rods (68) are inserted into the fin plates (4).

2. The conveying and testing equipment for plate-fin heat exchangers according to claim 1, characterized in that, The first lifting plate (11) and the second lifting plate (12) are respectively installed on both sides of the bottom plate (1), one end of the conveying frame (14) is installed on the first lifting plate (11), and the other end is installed on the second lifting plate (12). An adjusting screw rod and a horizontal rod are respectively installed on the conveying frame (14). One end of the adjusting screw rod is provided with a motor. The supporting frame plate (13) is movably connected to the outside of the adjusting screw rod and the horizontal rod. There are two conveying frames (14), and the two conveying frames (14) are symmetrically installed on the first lifting plate (11) and the second lifting plate (12). The supporting frame plates (13) are connected to the conveying frames (14). Clamping plates are installed on the supporting frame plates (13). A placement table (15) is erected on one side of each of the conveying frames (14). Horizontal grooves are formed in the conveying frames (14). The supporting frame plates (13) are movably connected in the horizontal grooves. The fin plates (4) are placed between the clamping plates on both sides.

3. The conveying and testing device for the plate-fin heat exchanger according to claim 1, wherein, A pressing end (272) is further installed on the top end of the adjusting frame (27). Fixed frames (21) are installed on the outside of the conveying guide rails (23). A plurality of support plates (22) are arranged and installed between the fixed frames (21). Inner push rods (221) are connected in the support plates (22) by springs. A plurality of pressing rods (222) are further arranged on the bottom surface of the support plates (22). The pressing rods (222) are connected in the support plates (22) by springs. One end of the pressing rod (222) is connected to the inner push rod (221), and the other end is connected to the top surface of the fin plate (4). The top end of the pressing end (272) is connected to the inner push rod (221).

4. The conveying and testing equipment for plate-fin heat exchangers according to claim 1, characterized in that, A plurality of support seats (31) are provided and are all arranged and installed on the top surface of the second lifting plate (12). Vertical screw rods are arranged in the support seats (31). Driving motors are installed on the top ends of the vertical screw rods. Two groups of slide rods (32) and lifting frames (33) are provided. The two groups of slide rods (32) and lifting frames (33) are connected between the corresponding vertical screw rods. The slide rods (32) are threadedly connected to the upper side part of the vertical screw rods, and the lifting frames (33) are threadedly connected to the lower side part of the vertical screw rods. A parallel screw rod is further installed in the lifting frame (33). One end of the parallel screw rod is provided with a micro motor. The inner pressing member (34) is slidably connected between the two slide rods (32). The test frame (35) is threadedly connected to the outside of the parallel screw rod.

5. The conveying and testing equipment for plate-fin heat exchangers according to claim 1, wherein, The inner pressure member (34) includes a first frame plate (341), a third cylinder (342), a guide block (345), and an intermediate pressure rod (344). Both ends of the first frame plate (341) are connected to the sliding rod (32). Third cylinders (342) are symmetrically installed on the top surfaces at both ends of the first frame plate (341). The telescopic ends of the third cylinders (342) penetrate to the bottom side of the first frame plate (341). The guide block (345) is installed on the telescopic end of the third cylinder (342). An "eight”-shaped card slot is provided on the guide block (345). Bottom frames are provided on the bottom surfaces at both ends of the first frame plate (341), and a "one”-shaped bottom groove is provided on the bottom frames. Two intermediate pressure rods (344) are provided. The two intermediate pressure rods (344) are connected in the card slot and the bottom groove. The fin plate (4) is connected between the two intermediate pressure rods (344), and the intermediate pressure rods (344) are connected to the outer wall surface of the fin plate (4). Driving frames (343) are rotatably connected to both ends of the first frame plate (341). First rotating blocks (346) are installed on one side of each driving frame (343), and the first rotating blocks (346) are rotationally limited outside the driving frames (343).

6. The conveying and testing device for a plate-fin heat exchanger according to claim 5, wherein, Second rotating blocks (351) are installed on both ends of the test frame (35). The driving frames (343) are connected to the outside of the second rotating blocks (351). A plurality of test members (36) are provided on the top surface of the test frame (35). The test member (36) includes an outer exhibition plate (361), a vertical block (362), and a trapezoidal piece (363). The vertical block (362) is fixed on the test frame (35). Two outer exhibition plates (361) are provided. The tops of the two outer exhibition plates (361) are rotatably connected to both sides of the top of the vertical block (362). Both sides of the outer exhibition plate (361) are connected inside the fin plate (4). A groove is provided in the vertical block (362), and vertical rods (366) are symmetrically installed in the groove. The trapezoidal piece (363) is located in the middle of the vertical rods (366). A central groove is provided on the trapezoidal piece (363). An inner rod (367) is installed on the bottom surface of the groove, and the inner rod (367) is connected in the central groove. The inner rod (367) and the trapezoidal piece (363) are connected by a spring. A pressure sensor is installed on the inner rod (367). Side wall sliders (364) are installed on both sides of the trapezoidal piece (363), and the side wall sliders (364) are connected to the outside of the vertical rods (366). Magnets are installed at the bottom ends of the side wall sliders (364). An electromagnet (365) is installed on the bottom surface of the groove. The magnet and the electromagnet (365) are magnetically connected. The trapezoidal piece (363) is connected between the bottom ends of the outer exhibition plates (361).

7. The conveying and testing device for the plate-fin heat exchanger according to claim 1, wherein, A lifting lead screw (53) is installed in each of the limit posts (5). A lifting piece (51) is threadedly connected to the lifting lead screw (53). The detection frame (61) is placed inside the lifting piece (51). Rotating tubes (62) are symmetrically installed on both sides of the detection frame (61). A synchronous belt (64) is connected between the tail ends of the rotating tubes (62). A rotating motor (63) is provided at the tail end of one of the rotating tubes (62). Internal threads are provided on the inner wall surfaces of the rotating tubes (62). Screws (65) are threadedly connected inside the rotating tubes (62). A second support plate (66) is fixed to one end of each of the two screws (65). Adjustment slots (611) are correspondingly provided on the detection frame (61) and the second support plate (66). A first corresponding plate (67) and a second corresponding plate (671) are respectively connected in the corresponding adjustment slots (611) of the detection frame (61) and the second support plate (66). The detection frame (61) and the second support plate (66) are provided with tightening screws. A plurality of insertion rods (68) are arranged between the first corresponding plate (67) and the second corresponding plate (671). One end of the insertion rod (68) is movably connected inside the second corresponding plate (671). A tail end spring (69) is connected between the other end of the insertion rod (68) and the rear side surface of the first corresponding plate (67). Two groups of insertion rods (68) are provided on the detection frame (61). The two groups of insertion rods (68) are respectively located in the upper layer and the lower layer of the detection frame (61), and the angle between them is ninety degrees.

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