Conveying test equipment for plate-fin heat exchanger

Abstract

The invention relates to the technical field of heat exchangers, in particular to conveying test equipment for a plate-fin heat exchanger, which comprises a bottom plate, an outer supporting mechanism, an inner pressing assembly and a placing table, a first lifting plate and a second lifting plate are arranged on the bottom plate, the placing table is arranged on the first lifting plate, and a conveying frame is mounted on the outer side of the placing table; a supporting frame plate is movably connected to the conveying frame, and a fin plate is placed on the supporting frame plate. The outer supporting mechanism is installed on the top face of the bottom plate, and the outer supporting mechanism comprises a conveying guide rail, a first air cylinder, an adjusting frame, an outer supporting piece and a push plate. According to the scheme, the possibility that the fins are difficult to detect due to the special shape is reduced, the possibility that continuous manual operation is needed in the testing process is reduced, and the testing efficiency is improved. The multi-angle detection effect of the device on the fins is improved, testing of different faces is achieved, the result is more accurate, the blockage detection effect of the device is improved, blockage analysis can be carried out on equipment used for a long time, and visual distinguishing can be carried out.

Description

Technical Field

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

[0002] The plate-fin heat exchanger is a highly efficient heat exchange device that forms a compact flow channel by stacking multiple layers of plates and fins. Its core is to improve the heat transfer efficiency by expanding the heat transfer area and enhancing the fluid turbulence. It is especially suitable for scenes with small temperature difference, large flow or limited space.

[0003] At present, during the heat exchange process of plate heat exchangers, the fins are easily subjected to pressure or impact forces of different sizes and directions. Under the action of these forces, the shape of the fins may be deformed. If the force is too large, some fins will undergo plastic deformation and cannot rebound, which will cause the fins to fall over or twist, resulting in a decrease in the cross-sectional area of ​​the fluid channel, an increase in flow resistance, and finally a blockage. In addition, the deformation will cause the partition or brazing layer to crack. For this reason, a conveying test equipment for plate-fin heat exchangers is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a conveying test device for a plate-fin heat exchanger.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A conveying and testing device for a plate-fin heat exchanger comprises a bottom plate, an external support mechanism, an internal pressure assembly and a placing table, wherein a first lifting plate and a second lifting plate are arranged on the bottom plate, a placing table is arranged on the first lifting plate, a conveying frame is installed on the outer side of the placing table, a supporting frame plate is movably connected to the conveying frame, and a fin plate is placed on the supporting frame plate; The external support mechanism is installed on the top surface of the bottom plate, and the external support mechanism includes a conveying rail, a first cylinder, an adjustment frame, an external support sheet and a push plate, the first cylinder is installed on the bottom side of the conveying rail, the adjustment frame is movably connected to the conveying rail, and the external support sheet and the push plate are respectively connected to the upper and lower sides of the adjustment frame; The internal pressure component is arranged on the second lifting plate, and the internal pressure component comprises 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 in the lifting frame, and the positions of the internal pressure piece and the test frame correspond to each other up and down; A placing table is installed on the rear side of the base plate, and a plurality of limiting columns are installed on the placing table. The fin plates are placed alternately on the placing table, and an external plug-in is arranged on the outer side of the limiting columns. The external plug-in includes a detection frame, an insertion rod, a first corresponding plate and a second frame plate. The second frame plate is connected to the outer side of the detection frame, the first corresponding plate is connected to the inside of the second frame plate, the insertion rods are arranged and installed on the first corresponding plate, and the insertion rods are inserted into the fin plates.

[0006] Preferably, the first lifting plate and the second lifting plate are respectively installed on both sides of the base 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, the conveying frame is respectively installed with an adjusting screw rod and a horizontal rod, one end of the adjusting screw rod is provided with a motor, the support frame plate is movably connected to the outside of the adjusting screw rod and the horizontal rod, the conveying frame is provided with two, the two conveying frames are symmetrically installed on the first lifting plate and the second lifting plate, the conveying frames are both connected with support frame plates, the support frame plates are both installed with clamping plates, a placing table is set on one side of the conveying frame, a horizontal groove is opened on the conveying frame, the support frame plate is movably connected in the horizontal groove, and the fin plate is placed between the clamping plates on both sides.

[0007] Preferably, the external support mechanism is located between the first lifting plate and the second lifting plate, a plurality of the first cylinders are provided, all of which are mounted on the bottom plate, two conveying guide rails are provided, and the two ends of the two conveying guide rails are respectively mounted on the telescopic ends of the two first cylinders, a driving screw is installed in each of the conveying guide rails, the bottom end of the adjusting frame is threadedly connected to the driving screw, the adjusting frame is in an "H" shape, a limiting shaft is installed between the top ends of the adjusting frames, and both sides of the limiting shaft are movably connected with external support sheets, and the external support sheets are in a "human" shape, The outer support piece is connected to the fin plate facing downward, and the inner wall on the bottom side of the adjustment frame is symmetrically provided with through grooves, and the two ends of the push plate are movably connected between the through grooves. A plurality of tilting blocks are fixed on the push plate, and a plurality of outer support rods are arranged on the adjustment frame. The top ends of the outer support rods are connected between the outer support pieces, and the bottom ends of the outer support rods are connected to the horizontal bottom surface of the adjustment frame by springs, and the bottom ends of the outer support rods are movably connected to the tilting blocks. A second cylinder is also installed on the adjustment frame, and the telescopic end of the second cylinder is connected to one of the tilting blocks.

[0008] Preferably, an extrusion end is also installed on the top of the adjustment frame, a fixed frame is installed on the outer side of the conveying guide rail, and a plurality of support plates are arranged and installed between the fixed frames. The support plates are all spring-connected with inner push rods, and a plurality of clamping rods are also arranged on the bottom surface of the support plates. The clamping rod spring is connected to the support plate, one end of the clamping rod is connected to the inner push rod, and the other end is connected to the top surface of the fin plate, and the top end of the extrusion end is connected to the inner push rod.

[0009] Preferably, there are multiple support seats, all of which are arranged and installed on the top surface of the second lifting plate. A vertical screw is provided in each support seat, and a driving motor is installed on the top of the vertical screw. There are two groups of sliding rods and lifting frames, and the two groups of sliding rods and lifting frames are connected between the corresponding vertical screws. The sliding rod is threadedly connected to the upper part of the vertical screw, and the lifting frame is threadedly connected to the lower part of the vertical screw. A parallel screw is also installed in the lifting frame, and a micro motor is provided at one end of the parallel screw. The internal pressure piece is slidably connected between the two sliding rods, and the test frame is threadedly connected to the outside of the parallel screw.

[0010] Preferably, the internal pressure member includes a first frame plate, a third cylinder, a guide block and an intermediate pressure rod, wherein both ends of the first frame plate are connected to the sliding rod, and the third cylinder is symmetrically installed on the top surfaces of the two ends of the first frame plate, and the telescopic end of the third cylinder passes through the bottom side of the first frame plate, and the guide block is installed on the telescopic end of the third cylinder, and an "eight"-shaped groove is opened on the guide block, and a bottom frame is arranged on the bottom surface of the two ends of the first frame plate, and an "I"-shaped bottom groove is opened on the bottom frame, and two intermediate pressure rods are provided, and the two intermediate pressure rods are connected in the groove and the bottom groove, the fin plate is connected between the two intermediate pressure rods, and the intermediate pressure rod is connected to the outer wall surface of the fin plate, and the driving frame is rotatably connected to both ends of the first frame plate, and a first rotating block is installed on one side of the driving frame, and the first rotating block is rotationally limited on the outside of the driving frame.

[0011] Preferably, a second rotating block is installed on both ends of the test frame, the driving frame is connected to the outside of the second rotating block, a plurality of test pieces are arranged on the top surface of the test frame, the test pieces include an outward expansion plate, a vertical block and a trapezoidal piece, the vertical block is fixed on the test frame, two outward expansion plates are arranged, the top ends of the two outward expansion plates are rotatably connected to the two sides of the top end of the vertical block, the two sides of the outward expansion plate are connected to the fin plate, a groove is opened in the vertical block, vertical rods are symmetrically installed in the groove, the trapezoidal The sheet is located in the middle of the vertical rod, a center groove is provided on the trapezoidal sheet, an inner rod is installed on the bottom surface of the groove, the inner rod is connected to the center groove, the inner rod and the trapezoidal sheet 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 sheet, the side wall sliders are connected to the outside of the vertical rod, a magnetic block is installed on the bottom end of the side wall slider, an electromagnetic block is installed on the bottom surface of the groove, the magnetic blocks and the electromagnetic blocks are magnetically connected, and the trapezoidal sheet is connected between the bottom ends of the external expansion plates.

[0012] Preferably, a lifting screw rod is installed in the limit column, and a lifting piece is threadedly connected on the lifting screw rod, and the detection frame is placed in the lifting piece, and rotating tubes are symmetrically installed on both sides of the detection frame, and a synchronous belt is connected between the tail ends of the rotating tubes, and a rotating motor is arranged on the tail end of one of the rotating tubes, and an internal thread is opened on the inner wall surface of the rotating tube, and screws are threadedly connected in the rotating tubes, and the second frame plate is fixed on one end of the two screws, and the detection frame and the second frame plate are correspondingly opened with adjustment grooves, the first corresponding plate and the second corresponding plate are respectively connected to the adjustment grooves corresponding to the detection frame and the second frame plate, and the detection frame and the second frame plate are provided with loose screws, and a plurality of plug rods are arranged between the first corresponding plate and the second corresponding plate, one end of the plug rod is movably connected in the second corresponding plate, and a tail end spring is connected between the other end of the plug rod and the rear side surface of the first corresponding plate, and two groups of plug rods are arranged on the detection frame, and the two groups of plug rods are respectively located at the upper and lower layers of the detection frame, and a ninety-degree angle is formed between the two.

[0013] The beneficial effects of the present invention are: In this solution, the arrangement of the support frame plate facilitates the conveying of the fin plates piece by piece, and the cooperation of the outer support rod and the outer support plate can realize the extrusion of the fin plates from the bottom to the two sides, and the arrangement of the clamping rod can limit and clamp the fin plates during the extrusion process; Since the support seat can control the sliding rod and the lifting frame to rise and fall at the same time, the collision of the fin plate during movement can be avoided. The inner pressure piece can clamp the two sides of the fin plate inward, and the trapezoidal piece connected by the spring can continuously open the expansion plate outward. The expansion plate will contact between the inner walls of the fin plate. The deformation degree of the fin plate can be identified by the pressure sensing of the spring and the contact position between the expansion plate and the trapezoidal piece, and it can also be adjusted accordingly according to the size of the inner wall. Since the setting of the plug rod can detect the blockage of the heat exchanger after long-term use and judge the degree of blockage, the internal blockage situation can be intuitively seen through the connection between the tail end spring, the plug rod and the first corresponding plate.

[0014] This solution reduces the possibility of difficulty in detection due to the special shape of the fins, reduces the possibility of continuous manual operation during the test, improves the effect of the device on multi-angle detection of the fins, realizes testing of different surfaces, and the results are more accurate. It also improves the blockage detection effect of the device, and can perform blockage analysis on equipment after long-term use and can identify it intuitively. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the conveying test equipment for the plate-fin heat exchanger proposed by the present invention; Figure 2 It is a structural schematic diagram of the conveyor frame and the placement table; Figure 3 It is a structural schematic diagram of the support frame plate part; Figure 4 It is a structural schematic diagram of the external support component; Figure 5 It is a schematic diagram of the main structure of the external support component; Figure 6 for Figure 5 The structural diagram of part A in the figure; Figure 7 It is a schematic diagram of the structure of the adjustment frame and the conveying guide rail part; Figure 8 It is a schematic diagram of the structure of the adjustment frame and the outer support plate; Fig. 9 It is a structural schematic diagram of the internal pressure component part; Fig.10 It is a schematic diagram of the main structure of the internal pressure component; Fig.11 for Fig.10 The structural diagram of part B; Fig.12 It is a structural schematic diagram of the inner pressure part; Fig.13 It is a schematic diagram of the main structure of the inner pressure part; Fig.14 It is a schematic diagram of the side structure of the inner pressure piece; Fig.15 It is a structural schematic diagram of the fin plate and the test frame; Fig.16 It is a schematic diagram of the main structure of the fin plate and the test frame; Fig.17 It is a structural schematic diagram of the test piece part; Fig.18 It is a schematic diagram of the main structure of the test piece; Fig.19 It is a side view structural schematic diagram of the test piece; Fig. 20 It is a structural diagram of the limit column and the placing table; Fig.21 It is a schematic diagram of the structure of the external plug-in part; Fig. 22 It is a structural diagram of the detection framework part; Fig.23 It is a structural schematic diagram of the fin plate part.

[0016] In the figure: 1, bottom plate; 11, first lifting plate; 12, second lifting plate; 13, support frame plate; 14, conveying frame; 15, placing table; 2, external support mechanism; 21, fixed frame; 22, support plate; 221, inner push rod; 222, clamping rod; 23, conveying guide rail; 24, first cylinder; 25, push plate; 26, outer support sheet; 27, adjustment frame; 271, outer support rod; 272, extrusion end; 28, second cylinder; 3, internal pressure assembly; 31, support seat; 32, slide rod; 33, lifting frame; 34, internal pressure member; 341, first frame plate; 342, third cylinder; 343, driving frame; 344, middle pressure rod; 345, Guide block; 346, first rotating block; 35, test frame; 351, second rotating block; 36, test piece; 361, extension 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 column; 51, lifting piece; 52, display table; 53, lifting screw; 6, external plug-in; 61, detection frame; 611, adjustment slot; 62, rotating tube; 63, rotating motor; 64, synchronous belt; 65, screw; 66, second frame plate; 67, first corresponding plate; 671, second corresponding plate; 68, plug-in rod; 69, tail end spring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Example 1: Reference Figure 1-8 The conveying test equipment for plate-fin heat exchanger comprises a bottom plate 1, an external support mechanism 2, an internal pressure assembly 3 and a placing table 52. The bottom plate 1 is provided with a first lifting plate 11 and a second lifting plate 12. The first lifting plate 11 is provided with a placing table 15. A conveying frame 14 is installed on the outer side of the placing table 15. A supporting frame plate 13 is movably connected to the conveying frame 14. The fin plate 4 is placed on the supporting frame plate 13. The outer support mechanism 2 is installed on the top surface of the bottom plate 1. The outer support mechanism 2 includes a conveying rail 23, a first cylinder 24, an adjustment 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 rail 23. The adjustment frame 27 is movably connected to the conveying rail 23. The outer support piece 26 and the push plate 25 are respectively connected to the upper and lower sides of the adjustment frame 27. The internal pressure assembly 3 is arranged on the second lifting plate 12, and the internal pressure assembly 3 includes a support seat 31, a slide bar 32, a lifting frame 33, an internal pressure piece 34 and a test frame 35. The slide bar 32 and the lifting frame 33 are horizontally connected to the support seat 31, the internal pressure piece 34 is movably connected to the slide bar 32, and the test frame 35 is connected to the lifting frame 33. The positions of the internal pressure piece 34 and the test frame 35 correspond to each other up and down. The placing table 52 is installed on the rear side of the base plate 1, and a plurality of limiting columns 5 are installed on the placing table 52. The fin plates 4 are placed alternately on the placing table 52. An external plug-in unit 6 is arranged on the outer side of the limiting columns 5. The external plug-in unit 6 includes a detection frame 61, an insertion rod 68, a first corresponding plate 67 and a second frame plate 66. The second frame plate 66 is connected to the outer side of the detection frame 61, the first corresponding plate 67 is connected to the inside of the second frame plate 66, the insertion rod 68 is arranged and installed on the first corresponding plate 67, and the insertion rod 68 is inserted into the fin plate 4.

[0019] Specifically, the first lifting plate 11 and the second lifting plate 12 are respectively installed on both sides of the base 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. The conveying frame 14 is respectively installed with an adjusting screw rod and a horizontal rod, and one end of the adjusting screw rod is provided with a motor to control the front and rear position adjustment of the support frame plate 13 to achieve the effect of conveying the fin plate 4. The support frame plate 13 is movably connected to the outside of the adjusting screw rod and the horizontal rod, and the conveying frame 14 is provided with two, and the two conveying frames 14 are symmetrically installed on the first lifting plate 11 and the second lifting plate 12. The conveying frame 14 is connected with a supporting frame plate 13, and a clamping plate is installed on the supporting frame plate 13 to facilitate the placement of the fin plate 4. A placing table 15 is set on one side of the conveying frame 14, and a horizontal groove is opened on the conveying frame 14. The support frame plate 13 is movably connected in the horizontal groove to support the support frame plate 13, so that the fin plate 4 can be placed more stably. The fin plate 4 is placed between the clamping plates on both sides.

[0020] In this embodiment, the external 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, all of which are installed on the bottom plate 1, and two conveying guide rails 23 are provided. The two ends of the two conveying guide rails 23 are respectively mounted on the telescopic ends of the two first cylinders 24 to control the up and down lifting of the adjustment frame 27. A driving screw is installed in the conveying guide rails 23, and the bottom end of the adjustment frame 27 is threadedly connected to the driving screw to realize the left and right adjustment of its position, which is convenient for testing different positions of the fin plate 4. The adjustment frame 27 is in an "H" shape, and a limiting shaft is installed between the top ends of the adjustment frame 27 to act on the limiting movement of the external support piece 26. The external support piece 26 is movably connected to both sides of the limiting shaft. The external support piece 26 is in a "human" shape, and the external support piece 26 is connected to the fin plate 4 facing downward. The fin plate 4 at the corresponding position can be stretched outward according to the opening range of the outer support piece 26. The inner wall on the bottom side of the adjusting frame 27 is symmetrically provided with through grooves. 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 arranged 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 outer support pieces 26 on both sides. The bottom ends of the outer support rods 271 are connected to the horizontal bottom surface of the adjusting frame 27 in a spring manner. The bottom ends of the outer support rods 271 are movably connected to the inclined blocks. According to the movement of the push plate 25, the effect of the outer support rods 271 rising and falling 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 act on the forward and backward pushing of the push plate 25.

[0021] The top of the adjusting frame 27 is also equipped with an extrusion end 272, which is used to extend into the support plate 22 to extrude the inner push rod 221. The outer side of the conveying guide rail 23 is equipped with a fixed frame 21, and a plurality of support plates 22 are arranged and installed between the fixed frames 21. The position of the support plate 22 corresponds to the top surface of the fin plate 4. The support plate 22 is spring-connected with the inner push rod 221 to facilitate extrusion and pushing, and to facilitate rapid rebound after losing resistance. A plurality of clamping rods 222 are also provided on the bottom surface of the support plate 22. The clamping rod 222 is spring-connected in the support plate 22 to extend downward after extrusion. One end of the clamping 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 compress the fin plate 4 to prevent the fin plate 4 from floating up and down when the outer support sheet 26 is opened. The top end of the extrusion end 272 is connected to the inner push rod 221, and the connection is also inclined.

[0022] 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, and after placing it, control the support frame plate 13 to move backward, move the fin plate 4 between the external support mechanisms 2, and stop after moving to the designated test position; Then the adjusting frame 27 is controlled to move on the conveying guide rail 23, and stops after moving to the specified position, and the first cylinder 24 is controlled to extend upward to gradually move the outer support sheet 26 to one of the downward opening grooves of the fin plate 4. During the insertion process, the extrusion end 272 will be pushed upward into the support plate 22, and the inner push rod 221 will be squeezed and translated to one side. During the translation process, the pressing rod 222 will be pushed downward, and the pressing rod 222 will be pressed on the top surface of the corresponding fin plate 4. At this time, the outer support sheet 26 also reaches the specified position, and then the second cylinder 28 is controlled to move forward. When the outer support rod 271 is pushed out, the push plate 25 will move to the other side. During the movement, 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 sheet 26 will be expanded outward. After expansion, the outer support sheet 26 will contact the inner walls on both sides of the fin plate 4. The second cylinder 28 continues to extend, and the outer support rod 271 will extend upward again. The opening amplitude of the outer support sheet 26 will be larger. At this time, the inner walls corresponding to the two sides of the fin plate 4 will be subjected to the force of expanding outward. According to the deformation size during expansion, the deformation of the fin plate 4 after being subjected to force can be tested. After testing one area, the above operation is reversed to restore the outer support plate 26 and the adjustment frame 27 to their original positions, and then the adjustment frame 27 is moved to the next test position so that the conditions of multiple areas can be tested, and then a unified analysis is performed based on the results.

[0023] This embodiment 2: Reference Figure 9-19 , based on Example 1, the following technical solution is also provided: There are multiple support seats 31, which are all arranged and installed on the top surface of the second lifting plate 12. A vertical screw is arranged in the support seat 31. External threads in opposite directions are opened on both ends of the vertical screw to act on the approach and separation of the sliding rod 32 and the lifting frame 33. A driving motor is installed on the top of the vertical screw. There are two groups of sliding rods 32 and lifting frame 33. The two groups of sliding rods 32 and lifting frame 33 are connected between the corresponding vertical screws so as to complete the installation of the internal pressure piece 34 and the test frame 35. The sliding rod 32 is threadedly connected to the upper part of the vertical screw, and the lifting frame 33 is threadedly connected to the lower part of the vertical screw. A parallel screw is also installed in the lifting frame 33 to control the horizontal movement of the test frame 35. A micro motor is set at one end of the parallel screw. The internal pressure piece 34 is slidably connected between the two sliding rods 32, and the test frame 35 is threadedly connected to the outside of the parallel screw.

[0024] 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. The two ends of the first frame plate 341 are slidably connected to the slide rod 32. The third cylinder 342 is symmetrically installed on the top surface of the two ends of the first frame plate 341. The telescopic end of the third cylinder 342 penetrates the bottom side of the first frame plate 341. The guide block 345 is installed on the telescopic end of the third cylinder 342. The guide block 345 is provided with an "eight"-shaped card slot. When the guide block 345 is pressed down, it acts on the intermediate pressure rods 344 on both sides to move closer to the middle to achieve the effect of squeezing the fin plate 4. The bottom surface of the two ends of the first frame plate 341 is provided with a bottom frame, and the bottom frame is provided with The "I"-shaped bottom groove acts on the limiting support of the middle pressure rod 344. Two middle pressure rods 344 are provided. The two middle pressure rods 344 are connected in the card groove and the bottom groove. The fin plate 4 is connected between the two middle pressure rods 344. The middle pressure rod 344 is connected to the outer wall surface of the fin plate 4, so that the extruded fin plate 4 can be tested. Both ends of the first frame plate 341 are rotatably connected with a driving frame 343 to drive the test frame 35 to move synchronously to achieve the effect of efficient detection. A first rotating block 346 is installed on one side of the driving frame 343. The first rotating block 346 is rotationally limited on the outer side of the driving frame 343 to position the driving frame 343.

[0025] The second rotating block 351 is installed on both ends of the test frame 35, and the driving frame 343 is connected to the outside of the second rotating block 351, so that the internal pressure piece 34 and the test frame 35 can be stably connected, and even if the detection position is changed during the test, the second rotating block 351 and the driving frame 343 remain connected. A plurality of test pieces 36 are arranged on the top surface of the test frame 35, and the test pieces 36 include an outward expansion plate 361, a vertical block 362 and a trapezoidal piece 363. The vertical block 362 is fixed on the test frame 35, and the outward expansion plate 361 is arranged There are two, the tops of the two outward expansion plates 361 are rotatably connected to the two sides of the top of the vertical block 362, the two sides of the outward expansion plate 361 are connected to the fin plate 4, a groove is provided 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 rod 366, a central groove is provided on the ground 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, and the inner rod 367 and the trapezoidal piece 363 are connected by a spring to act on the trapezoidal piece 363 The outer plate 361 is pushed upward to achieve a continuous open state and contact with the fin plate 4. A pressure sensor is installed on the inner rod 367. The height of the trapezoidal plate 363 can be identified according to the pressure of the sensor, and the opening amplitude of the outer plate 361 can be indirectly identified. The higher the pop-up height, the greater the opening amplitude of the outer plate 361. Contact sensing strips are also installed on the inclined surfaces on both sides of the trapezoidal plate 363. The opening amplitude of the outer plate 361 is secondarily identified through the contact position between the outer plate 361 and the sensing strip. The combination of these data can more accurately test the changes in the downward opening of the fin plate 4. Side wall sliders 364 are installed on both sides of the trapezoidal piece 363. The side wall sliders 364 are connected to the outer side of the vertical rod 366 to achieve stable up and down movement of the trapezoidal piece 363. A magnetic block is installed on the bottom end of the side wall slider 364, and an electromagnetic block 365 is installed on the bottom surface of the groove. The magnetic block and the electromagnetic block 365 are magnetically connected to each other to position the trapezoidal piece 363 when not in use. The trapezoidal piece 363 is connected between the bottom ends of the extension plate 361.

[0026] Working principle: control the support frame plate 13 to move again, move the fin plate 4 that is being tested in the embodiment 1 to the middle position of the internal pressure assembly 3, align the internal pressure piece 34 and the test frame 35 after reaching the designated position, rotate the first rotating block 346 to turn the driving frame 343 downward by 180 degrees, so that it is connected to one side of the second rotating block 351, rotate the second rotating block 351 to limit the driving frame 343, and then control the parallel screw rod to move, move the test frame 35 to the bottom side of one of the fin plates 4 that have been opened in the embodiment 1, and under the connection of the driving frame 343, the internal pressure piece 34 will also follow and move to the upper side of the designated fin plate 4 position, and then control the vertical screw rod to rotate, the sliding rods 32 at the upper end and the lifting frame 33 at the lower end will synchronously move to the middle position until the test piece 36 moves to the corresponding downward opening groove of the fin plate 4, and the middle pressure rod 344 moves to the upward opening grooves on both sides of the corresponding downward opening groove of the fin plate 4; Then, the electromagnetic block 365 is controlled to lose power. At this time, the magnetic connection between the magnetic block and the electromagnetic block 365 is lost, and the trapezoidal pieces 363 on the left and right sides of the spring will pop up. During the popping-up process, the trapezoidal pieces 363 will open the outward expansion plates 361 on both sides to both sides until the outward expansion plates 361 contact the downward opening groove of the fin plate 4. At this time, the height of the trapezoidal piece 363 popping up can be identified according to the pressure sensor, and the opening amplitude of the outward expansion plate 361 can be obtained. The size of the opening amplitude of the outward expansion plate 361 can also be obtained according to the contact position of the outward expansion plate 361 on the sensing strip, so as to more accurately obtain the size of the downward opening groove of the fin plate 4. The deformation of the external support in Example 1 can reflect the overall resilience of the fin plate 4, and it can be tested whether the fin plate 4 is completely restored or plastically deformed after losing the external support force in Example 1 and cannot rebound, and the test data is recorded in real time; Then control the third cylinder 342 to extend downward, the guide block 345 will move downward, and the middle pressure rods 344 on both sides will be squeezed to the middle position. At this time, the inner walls of the corresponding fin plate 4 on both sides will be squeezed. During the squeezing process, the fin plate 4 may be deformed. If deformation occurs, the internal expansion plate 361 will be squeezed, and the trapezoidal piece 363 will be adjusted downward. The extrusion amplitude can be identified according to the pressure sensor and the sensor strip. The third cylinder 342 extends to the specified position and then retracts. The middle pressure rod 344 will recover. At this time, the squeezing force of the fin plate 4 to support it will begin to recover. The expansion plate 361 and the trapezoidal piece 363 will match the situation of the inner wall of the fin plate 4 again. The degree of rebound recovery of the fin plate 4 can be identified according to the result after the movement. Then repeat the above operation to perform the same operation on other areas of the fin plate 4 to obtain the quality of the entire fin plate 4.

[0027] This embodiment 3: Reference Figure 20-23, based on Example 2, the following technical solution is also provided: A lifting screw 53 is installed in the limit column 5, and a lifting piece 51 is threadedly connected to the lifting screw 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 that the multi-layer fin plate 4 can be detected. Rotating tubes 62 are symmetrically installed on both sides of the detection frame 61, and a synchronous belt 64 is connected between the tail ends of the rotating tubes 62. A rotating motor 63 is arranged on the tail end of one of the rotating tubes 62. An internal thread is provided on the inner wall surface of the rotating tube 62. Screws 65 are threadedly connected in the rotating tubes 62. The extension and retraction of the screws 65 can be achieved by rotating the rotating tubes 62. The second frame plate 66 is fixed on one end of the two screws 65. Adjustment slots 611 are correspondingly provided on the detection frame 61 and the second frame plate 66. The first corresponding plate 67 and the second corresponding plate 671 are respectively connected to the adjustment slots 611 corresponding to the detection frame 61 and the second frame plate 66 to act on the insertion rod 68. The position can be adjusted left and right, so it is convenient to insert it into the fin plate 4 at different positions to realize comprehensive internal detection. The detection frame 61 and the second frame plate 66 are provided with loose screws for easy positioning. A plurality of plug rods 68 are arranged between the first corresponding plate 67 and the second corresponding plate 671. One end of the plug rod 68 is movably connected in the second corresponding plate 671 to achieve the supporting effect on the front end of the plug rod 68. A tail end spring 69 is connected between the other end of the plug rod 68 and the rear side surface of the first corresponding plate 67. After the front end of the plug rod 68 encounters resistance, the tail end of the plug rod 68 will pull the tail end spring 69 backwards. The internal blockage situation can be judged by the amplitude and duration of the pulling. Two groups of plug rods 68 are arranged on the detection frame 61. The two groups of plug rods 68 are respectively located on the upper and lower layers of the detection frame 61. The angle of ninety degrees between the two can realize the detection of the alternately placed fin plates 4, and the detection is faster and more intuitive.

[0028] 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; 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.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] 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.

[0031] 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 test equipment for plate-fin heat exchangers, characterized in that: include: A bottom plate (1), wherein a first lifting plate (11) and a second lifting plate (12) are provided on the bottom plate (1), a placement platform (15) is provided on the first lifting plate (11), a conveying frame (14) is installed on the outer side of the placement platform (15), a support frame plate (13) is movably connected to the conveying frame (14), and a fin plate (4) is placed on the support frame plate (13); an external support mechanism (2), the external support mechanism (2) being mounted on the top surface of the bottom plate (1), the external support mechanism (2) comprising a conveying rail (23), a first cylinder (24), an adjustment frame (27), an external support plate (26) and a push plate (25), the first cylinder (24) being mounted on the bottom side of the conveying rail (23), the adjustment frame (27) being movably connected to the conveying rail (23), and the external support plate (26) and the push plate (25) being respectively connected to the upper and lower sides of the adjustment frame (27); An internal pressure component (3), the internal pressure component (3) being arranged on the second lifting plate (12), the internal pressure component (3) comprising a support seat (31), a sliding rod (32), a lifting frame (33), an internal pressure member (34) and a test frame (35), the sliding rod (32) and the lifting frame (33) being horizontally connected to the support seat (31), the internal pressure member (34) being movably connected to the sliding rod (32), the test frame (35) being connected inside the lifting frame (33), and the positions of the internal pressure member (34) and the test frame (35) corresponding to each other up and down; A placing table (52) is installed on the rear side of the bottom plate (1), a plurality of limiting columns (5) are installed on the placing table (52), the fin plates (4) are alternately placed on the placing table (52), an external plug-in unit (6) is arranged on the outer side of the limiting columns (5), the external plug-in unit (6) comprises a detection frame (61), an insertion rod (68), a first corresponding plate (67) and a second frame plate (66), the second frame plate (66) is connected to the outer side of the detection frame (61), the first corresponding plate (67) is connected to the inside of the second frame plate (66), the insertion rod (68) is arranged and installed on the first corresponding plate (67), and the insertion rod (68) is inserted into the fin plates (4).

2. The plate-fin heat exchanger conveying test equipment according to claim 1, characterized in that: The first lifting plate (11) and the second lifting plate (12) are respectively mounted on both sides of the bottom plate (1); one end of the conveying frame (14) is mounted on the first lifting plate (11), and the other end is mounted on the second lifting plate (12); an adjusting screw rod and a horizontal rod are respectively mounted on the conveying frame (14); a motor is arranged at one end of the adjusting screw rod; the support frame plate (13) is movably connected to the outer sides of the adjusting screw rod and the horizontal rod; two conveying frames (14) are arranged; the two conveying frames (14) are symmetrically mounted on the first lifting plate (11) and the second lifting plate (12); the conveying frames (14) are both connected to the support frame plates (13); a clamping plate is installed on the support frame plates (13); a placing table (15) is mounted on one side of the conveying frame (14); a horizontal groove is opened on the conveying frame (14); the support frame plate (13) is movably connected in the horizontal groove; the fin plate (4) is placed between the clamping plates on both sides.

3. The conveying test equipment for plate-fin heat exchanger according to claim 1, characterized in that: The external 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, all of which are mounted on the bottom plate (1); two conveying guide rails (23) are provided, and the two ends of the two conveying guide rails (23) are respectively mounted on the telescopic ends of the two first cylinders (24); a driving screw is installed in each of the conveying guide rails (23); the bottom end of the adjustment frame (27) is threadedly connected to the driving screw; the adjustment frame (27) is in an "H" shape; a limit shaft is installed between the top ends of the adjustment frame (27); both sides of the limit shaft are movably connected to external support plates (26); the external support plates (26) are in a "human" shape; the external support plates (26) The adjusting frame (27) is connected to a fin plate (4) facing downward, and a through groove is symmetrically provided 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 tilting blocks are fixed on the push plate (25). A plurality of external support rods (271) are provided on the adjusting frame (27). The top ends of the external support rods (271) are connected between the external support plates (26). The bottom ends of the external support rods (271) are connected to the horizontal bottom surface of the adjusting frame (27) in a spring manner. The bottom ends of the external support rods (271) are movably connected to the tilting blocks. 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 tilting blocks.

4. The conveying test equipment for plate-fin heat exchanger according to claim 3, characterized in that: An extrusion end head (272) is also installed on the top of the adjustment frame (27), and a fixing frame (21) is installed on the outer side of the conveying guide rail (23). A plurality of support plates (22) are arranged and installed between the fixing frames (21). The support plates (22) are all spring-connected with inner push rods (221). A plurality of clamping rods (222) are also arranged on the bottom surface of the support plates (22). The clamping rods (222) are spring-connected inside the support plates (22), one end of the clamping rods (222) is connected to the inner push rods (221), and the other end is connected to the top surface of the fin plate (4). The top end of the extrusion end head (272) is connected to the inner push rods (221).

5. The conveying test equipment for plate-fin heat exchanger according to claim 1, characterized in that: The support seats (31) are provided in plurality and are all arranged and mounted on the top surface of the second lifting plate (12). A vertical screw is provided in each of the support seats (31), and a driving motor is installed on the top of the vertical screw. Two groups of slide bars (32) and lifting frames (33) are provided, and the two groups of slide bars (32) and lifting frames (33) are connected between corresponding vertical screws. The slide bars (32) are threadedly connected to the upper part of the vertical screw, and the lifting frames (33) are threadedly connected to the lower part of the vertical screw. A parallel screw is also installed in the lifting frame (33), and a micro motor is provided at one end of the parallel screw. The internal pressure piece (34) is slidably connected between the two slide bars (32), and the test frame (35) is threadedly connected to the outer side of the parallel screw.

6. The conveying test equipment for plate-fin heat exchanger according to claim 1, characterized in that: The internal pressure member (34) comprises a first frame plate (341), a third cylinder (342), a guide block (345) and an intermediate pressure rod (344); the two ends of the first frame plate (341) are connected to the slide rod (32); the third cylinder (342) is symmetrically mounted on the top surfaces of the two ends of the first frame plate (341); the telescopic end of the third cylinder (342) penetrates the bottom side of the first frame plate (341); the guide block (345) is mounted on the telescopic end of the third cylinder (342); the guide block (345) is provided with an "eight"-shaped slot; the first frame plate (341) A bottom frame is provided on the bottom surface of both ends, and a bottom groove in the shape of "I" is provided on the bottom frame. Two intermediate pressure rods (344) are provided, and the two intermediate pressure rods (344) are connected in the clamping groove 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). Both ends of the first frame plate (341) are rotatably connected to a driving frame (343), and a first rotating block (346) is installed on one side of the driving frame (343). The first rotating block (346) is rotationally limited on the outer side of the driving frame (343).

7. The plate-fin heat exchanger conveying and testing equipment according to claim 6, characterized in that: A second rotating block (351) is installed on both ends of the test frame (35), the driving frame (343) is connected to the outside of the second rotating block (351), and a plurality of test pieces (36) are arranged on the top surface of the test frame (35), the test pieces (36) include an extension plate (361), a vertical block (362) and a trapezoidal sheet (363), the vertical block (362) is fixed on the test frame (35), two extension plates (361) are arranged, the top ends of the two extension plates (361) are rotatably connected to the two sides of the top end of the vertical block (362), the two sides of the extension plates (361) are connected to the inside of 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 sheet (363) is provided with a plurality of test pieces (36), and the test pieces (36) include an extension plate (361), a vertical block (362) and a trapezoidal sheet (363), the vertical block (362) is fixed on the test frame (35), two extension plates (361) are arranged, the top ends of the two extension plates (361) are rotatably connected to the two sides of the top end of the vertical block (362), the two sides of the extension plates (361) are connected to the inside of 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 sheet (363) is provided with a plurality of test pieces (36) and a plurality of test pieces (36) are ... (363) is located in the middle of the vertical rod (366), a central groove is formed on the trapezoidal piece (363), an inner rod (367) is installed on the bottom surface of the groove, 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), the side wall sliders (364) are connected to the outside of the vertical rod (366), a magnetic block is installed on the bottom end of the side wall slider (364), an electromagnetic block (365) is installed on the bottom surface of the groove, the magnetic block and the electromagnetic block (365) are magnetically connected, and the trapezoidal piece (363) is connected between the bottom ends of the extension plate (361).

8. The conveying test equipment for plate-fin heat exchanger according to claim 1, characterized in that: A lifting screw rod (53) is installed in each of the limit columns (5), and a lifting plate (51) is threadedly connected to the lifting screw rod (53). The detection frame (61) is placed in the lifting plate (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 arranged on the tail end of one of the rotating tubes (62). An internal thread is provided on the inner wall surface of the rotating tube (62). Screw rods (65) are threadedly connected in each of the rotating tubes (62). The second frame plate (66) is fixed to one end of the two screw rods (65). Adjustment grooves (611) are correspondingly provided on the detection frame (61) and the second frame plate (66). The first corresponding plate (67) and the second corresponding plate (671) are respectively connected to the corresponding adjustment slots (611) of the detection frame (61) and the second frame plate (66); the detection frame (61) and the second frame plate (66) are provided with loosening screws; a plurality of plug rods (68) are arranged between the first corresponding plate (67) and the second corresponding plate (671); one end of the plug rod (68) is movably connected to the second corresponding plate (671); a tail spring (69) is connected between the other end of the plug rod (68) and the rear side surface of the first corresponding plate (67); two groups of plug rods (68) are provided on the detection frame (61); the two groups of plug rods (68) are respectively located at the upper layer and the lower layer of the detection frame (61), and a ninety-degree angle is formed between the two groups of plug rods.

Images