A pressure testing device for a finned tube

Abstract

The application relates to the field of finned tube testing, and discloses a pressure testing device for a finned tube, which comprises a bottom plate, a supporting plate arranged on the right side of the upper surface of the bottom plate, a material displacement structure arranged at the top end of the supporting plate, a transverse testing structure arranged on the bottom plate, a storage structure arranged at two corner positions on the right side of the upper surface of the bottom plate, and a supporting structure arranged in the middle of the upper surface of the bottom plate. When the finned tube is tested, pressure testing can be carried out along the radial direction and the transverse direction of the finned tube, so that the finned tube is tested more thoroughly and the precision is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of finned tube testing, in particular to a pressure testing device for finned tube. BACKGROUND

[0002] The finned tube is a heat exchange element for heat transfer enhancement, which expands the heat transfer area by adding fins on the surface of the base pipe to improve the heat exchange efficiency, and is widely used in industrial boilers, power, metallurgy and waste heat recovery fields; after production, in order to ensure the production quality of the finned tube, a pressure testing device is needed to test the finned tube;

[0003] The pressure testing device in the prior art is provided with a pressure assembly, a display assembly, a linkage assembly, a driving assembly and a cleaning assembly, so that the device can more comprehensively and carefully observe the outer surface of the finned tube, and the staff can know whether the finned tube is deformed and whether the outer surface is concave by observing the test process or the display assembly, so that the device tests more comprehensively, and the unqualified finned tube is avoided from flowing into the market as much as possible to affect the quality of subsequent products.

[0004] However, in actual testing, the pressure testing is performed by pressing the side surface of the finned tube, so that the pressure testing is only performed in the radial direction of the finned tube, the testing is one-sided, and the finned tube is not tested thoroughly, so there is room for improvement. SUMMARY

[0005] In order to solve the problems in the background art, the present application provides a pressure testing device for finned tube.

[0006] The pressure testing device for finned tube provided by the present application adopts the following technical scheme:

[0007] A pressure testing device for finned tube, comprising a bottom plate, a support plate is arranged on the right side of the upper surface of the bottom plate, a material displacement structure is arranged at the top end of the support plate, a transverse testing structure is arranged on the bottom plate, storage structures are arranged at the two corner edges of the right side of the upper surface of the bottom plate, and a support structure is arranged in the middle of the upper surface of the bottom plate.

[0008] The transverse testing structure comprises a first horizontal groove opened in the upper surface of the bottom plate, a bidirectional threaded rod is rotatably inserted into the first horizontal groove, a second motor is installed on the left side surface of the bottom plate, the output shaft of the second motor is connected with the bidirectional threaded rod, first moving seats are slidably arranged at both ends of the first horizontal groove, a threaded groove is opened in the first moving seat for the bidirectional threaded rod to pass through, a lifting cylinder is arranged on the upper surface of the first moving seat through a lifting structure, a pressure disc is installed at the top end of the lifting cylinder, and a limiting structure is arranged on the lifting cylinder.

[0009] The support structure comprises two groups of support rods connected to the top of the base plate, the top of each group of two support rods is provided with a support seat, and the two groups of support rods are located between two first moving seats.

[0010] The radial test structure comprises two second moving seats arranged on the top of the base plate, a transmission structure is arranged between the second moving seat and the first moving seat, a first vertical plate is connected to the top of the second moving seat, a through slot is formed in the first vertical plate, a first motor is mounted on the lower slot wall of the through slot, a first threaded rod is connected to the top of the output shaft of the first motor, a lifting plate is movably arranged in the through slot, a threaded groove is formed in the lifting plate for the first threaded rod to pass through, two ends of the top of the lifting plate are connected to the penetration plate which penetrably passes through the first vertical plate, and a pressure block is mounted on the top of the penetration plate.

[0011] Preferably, the limiting structure comprises first fixed strips connected to the top ends of the front and rear sides of the lifting cylinder, and a limiting rod is connected between each group of two first fixed strips.

[0012] Preferably, the lifting structure comprises a driving rod connected to the bottom end of the front and rear sides of the lifting cylinder, a horizontal plate is connected to the top of the base plate, a middle slot is formed in the horizontal plate, two first driving slots are formed in the horizontal plate, the two first driving slots are respectively communicated with the two ends of the middle slot, one end of the driving rod is movably inserted into the first driving slot, the lifting cylinder is movably sleeved on the second vertical plate, and the bottom end of the second vertical plate is connected to the first moving seat.

[0013] Preferably, the transmission structure comprises a fixed rod connected to the first moving seat, a second threaded rod is movably sleeved on the fixed rod, the second threaded rod is hollow, a sleeve plate is rotatably sleeved on the second threaded rod, the bottom end of the sleeve plate is fixedly connected to the base plate, the second threaded rod rotatably penetrates through the threaded groove formed in the second moving seat, a second horizontal groove is formed in the second threaded rod, a spiral groove is formed in the second threaded rod and communicated with the second horizontal groove, one end of the fixed rod is connected to a first insertion rod, and the first insertion rod is movably inserted into the second horizontal groove.

[0014] Preferably, the material displacement structure comprises a third motor mounted on the top end of one side of the support plate, one end of the output shaft of the third motor is provided with a rotating disc, a plurality of connecting rods are connected to the side of the rotating disc, a switching ring is mounted on one end of the connecting rod, a plurality of mounting plates are arranged on the switching ring through a turnover structure, and a clamping fixing structure is arranged on each mounting plate.

[0015] Preferably, the abutting fixing structure comprises a motor-driven push rod mounted on a mounting plate, a middle rod connected to the middle of the side of the motor-driven push rod away from the motor-driven push rod, an insertion cylinder movably sleeved on the middle rod, an insertion block provided at one end of the insertion cylinder, the insertion block being in the shape of a truncated cone, a plurality of second fixing strips provided on the side of the middle rod, the left end face of each of the second fixing strips being in the shape of an inclined face, a plurality of through grooves provided on the inner wall of the insertion cylinder, an abutting block movably inserted into each of the through grooves, an inner strip connected to the inner end of the abutting block, an extension rod connected between the inner strip and the inner wall of the insertion cylinder, a spring sleeved on the extension rod, the two ends of the spring being connected to the inner strip and the inner wall of the insertion cylinder respectively, an extrusion wheel mounted at one end of the inner strip, and an end sleeve movably sleeved on the middle rod and provided at the other end of the insertion cylinder, the output shaft of the motor-driven push rod being connected to the end sleeve.

[0016] Preferably, the turning structure comprises a plurality of grooves provided in the side of a switching ring, an inner plate connected at the position of each of the grooves on the inner wall of the switching ring, a driving strip movably inserted into the inner plate, a turning rod rotatably connected between the groove walls on the two sides of each of the grooves, a turning plate movably sleeved on the turning rod at the two ends of the turning rod, the turning plate being connected to a mounting plate at one end, a gear movably sleeved on the turning rod, a plurality of teeth provided on the driving strip and meshingly connected to the gear, and a driving structure provided between the driving strip and a support plate.

[0017] Preferably, the driving structure comprises a second insertion rod connected to one end of the driving strip, a fixed disc fixedly provided at the other end of the support plate, an arc-shaped groove provided in the fixed disc, a second driving groove provided in the fixed disc and communicating between the two ends of the arc-shaped groove, and the second insertion rod being movably inserted into the arc-shaped groove at one end.

[0018] Preferably, the storage structure comprises two L-shaped plates fastened on the right side of the upper surface of the bottom plate through bolts, one end of one of the L-shaped plates being provided with a storage frame, a limiting edge being provided on the front edge of the upper surface of the storage frame, the upper surface of the storage frame being inclined downward towards the side close to the support plate, and one end of the other L-shaped plate being provided with a discharging frame, the upper surface of the discharging frame being inclined downward towards the side away from the support plate.

[0019] In summary, the present application has the following beneficial technical effects:

[0020] The present application is provided with the transverse testing structure and the radial testing structure, so that the pressure test can be performed along the radial direction and the transverse direction of the finned tube, so that the finned tube is tested more thoroughly and with higher precision.

[0021] The present application sets up the lifting structure, the limiting structure and the supporting structure, after the finned tube is placed on the supporting structure, the pressure disc of the transverse test structure is smoothly moved to the both ends of the finned tube for transverse pressure test work by the lifting structure, at the same time, the limiting structure is driven on the supporting structure to limit the finned tube, and the radial test structure is guaranteed to be smooth;

[0022] The present application sets up the transmission structure, the radial test structure can be automatically moved along the horizontal direction in the process of the transverse test structure movement, so that the pressure test can be carried out on different positions of the finned tube, and the test work quality is higher;

[0023] The present application sets up the material displacement structure, the abutting fixing structure and the storage material structure, the abutting fixing structure can be driven to take and place materials at the storage material structure by the material displacement structure, and the finned tube is displaced to the test position for test, without manually moving the finned tube for test, the operation is more labor-saving and convenient, and the test work efficiency is greatly improved;

[0024] The present application sets up the turnover structure and the driving structure, the finned tube can be automatically turned over by the driving structure and the turnover structure in the process of the finned tube displacement, so that the finned tube can be smoothly turned over to the supporting structure for test work, and after test, the finned tube can be turned over to the storage material structure for discharging work. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structure schematic view of a pressure test device for a finned tube in the embodiment of the present application;

[0026] Figure 2 It is a structure schematic view of a material displacement structure in the embodiment of the present application;

[0027] Figure 3 It is an enlarged view of structure A in the embodiment of the present application; Figure 1

[0028] Figure 4 It is a structure schematic view of an insertion cylinder in the embodiment of the present application;

[0029] Figure 5 It is a structure schematic view of the inside of the insertion cylinder in the embodiment of the present application;

[0030] Figure 6 It is an enlarged view of structure B in the embodiment of the present application; Figure 5

[0031] Figure 7 It is a structure schematic view of a transverse test structure and a radial test structure in the embodiment of the present application;

[0032] Figure 8 ​​is a structure enlarged view of C in Figure 7 the embodiment of the present application.

[0033] Figure 9 is a structure enlarged view of B in Figure 7 the embodiment of the present application.

[0034] Mark explanation: 1, bottom plate; 2, first horizontal groove; 3, support rod; 4, support seat; 5, first moving seat; 6, pressure disc; 7, lifting cylinder; 8, second moving seat; 9, first vertical plate; 10, through groove; 11, first motor; 12, first threaded rod; 13, lifting plate; 14, through plate; 15, pressure block; 16, first fixed bar; 17, limiting rod; 18, second motor; 19, second vertical plate; 20, driving rod; 21, horizontal plate; 22, middle groove; 23, first driving groove; 24, fixed rod; 25, second threaded rod; 26, first inserting rod; 27, second horizontal groove; 28, spiral groove; 29, support plate; 30, third motor; 31, rotating disc; 32, connecting rod; 33, mounting plate; 34, insertion cylinder; 35, insertion block; 36, discharging frame; 37, through groove; 38, abutting block; 39, middle rod; 40, end sleeve; 41, electric push rod; 42, inner bar; 43, limiting edge; 44, second fixed bar; 45, telescopic rod; 46, spring; 47, extrusion wheel; 48, switching ring; 49, groove; 50, overturning rod; 51, overturning plate; 52, gear; 53, driving bar; 54, inner plate; 55, fixed disc; 56, arc-shaped groove; 57, second driving groove; 58, second inserting rod; 59, L-shaped plate; 60, storage frame; 61, sleeve plate. DETAILED DESCRIPTION

[0035] The application will be further described below in conjunction with the accompanying drawings. Figures 1-9

[0036] With reference to the drawings, Figures 1-9 the embodiment of the present application discloses a pressure testing device for finned tube, which comprises a bottom plate 1, a support plate 29 is arranged on the right side of the upper surface of the bottom plate 1, a material displacement structure is arranged at the top end of the support plate 29, a horizontal testing structure is arranged on the bottom plate 1, storage material structures are arranged at the two corners of the right side of the upper surface of the bottom plate 1, and a supporting structure is arranged in the middle of the upper surface of the bottom plate 1.

[0037] The horizontal testing structure comprises a first horizontal groove 2 opened on the upper surface of the bottom plate 1, a bidirectional threaded rod is rotatably inserted into the first horizontal groove 2, a second motor 18 is mounted on the middle of the left side surface of the bottom plate 1, the output shaft of the second motor 18 is connected with the bidirectional threaded rod, first moving seats 5 are slidably arranged at the two ends in the first horizontal groove 2, threaded grooves for the bidirectional threaded rod to pass through are opened on the first moving seats 5, lifting cylinders 7 are arranged on the upper surfaces of the first moving seats 5 through lifting structures, pressure discs 6 are mounted at the top ends of the lifting cylinders 7, and limiting structures are arranged on the lifting cylinders 7.

[0038] ​The support structure comprises two groups of support rods 3 connected to the top of the bottom plate 1, the top of each of the two support rods 3 is provided with a support seat 4, and the two groups of support rods 3 are located between two first moving seats 5; and a radial test structure is arranged on the top of the bottom plate 1 between the two groups of support rods 3;

[0039] The radial test structure comprises two second moving seats 8 arranged on the top of the bottom plate 1, a transmission structure is arranged between the second moving seat 8 and the first moving seat 5, a first vertical plate 9 is connected to the top of the second moving seat 8, a through slot 10 is formed in the first vertical plate 9, a first motor 11 is arranged on the lower slot wall of the through slot 10, a first threaded rod 12 is connected to the top of the output shaft of the first motor 11, a lifting plate 13 is movably arranged in the through slot 10, a threaded groove is formed in the lifting plate 13 and the first threaded rod 12 passes through the threaded groove, two penetration plates 14 movably penetrating the first vertical plate 9 are connected to the top of the lifting plate 13, and a pressure block 15 is arranged on the top of the penetration plate 14;

[0040] The limiting structure comprises first fixed strips 16 connected to the top of the front and rear sides of the lifting cylinder 7, and a limiting rod 17 is connected between each of the two first fixed strips 16, and the middle section of the limiting rod 17 is in an arc shape;

[0041] The lifting structure comprises a driving rod 20 connected to the bottom of the front and rear sides of the lifting cylinder 7, a horizontal plate 21 is connected to the top of the front and rear sides of the bottom plate 1, a middle slot 22 is formed in the horizontal plate 21, two first driving slots 23 are formed in the horizontal plate 21 and are respectively communicated with the two ends of the middle slot 22, one end of the driving rod 20 is movably inserted into the first driving slot 23, the lifting cylinder 7 is movably sleeved on the second vertical plate 19, and the bottom of the second vertical plate 19 is connected to the first moving seat 5;

[0042] The transmission structure comprises a fixed rod 24 connected to the first moving seat 5, a second threaded rod 25 movably sleeved on the fixed rod 24, the second threaded rod 25 being internally hollow, a sleeve plate 61 rotatably sleeved on the second threaded rod 25, the sleeve plate 61 being fixedly connected to the bottom plate 1 at the bottom end, the second threaded rod 25 being rotatably threaded through a threaded groove provided on the second moving seat 8, a second horizontal groove 27 being provided on the second threaded rod 25, a spiral groove 28 communicating with the second horizontal groove 27 being provided on the second threaded rod 25, one end of the fixed rod 24 being connected to a first inserting rod 26, the first inserting rod 26 being movably inserted into the second horizontal groove 27, after the finned tube is placed on the two support seats 4, the second motor 18 is started to drive the bidirectional screw rod to rotate, the left and right two sections of the bidirectional screw rod are opposite in screw direction, so that the two first moving seats 5 drive the pressure disc 6 to move towards the end part close to the finned tube, in the moving process of the first moving seat 5, not only one end of the driving rod 20 is slid from the first driving groove 23 to the middle groove 22, but also the lifting cylinder 7 is pushed upward on the second vertical plate 19, so that the pressure disc 6 can be smoothly moved to the same horizontal height of the finned tube, at the same time, the limiting rod 17 is also moved to tightly abut against the side surface of the finned tube to limit the finned tube on the support seat 4, and the movement of the first moving seat 5 drives the fixed rod 24 to move, the first inserting rod 26 at one end of the fixed rod 24 moves in the spiral groove 28 on the second threaded rod 25, the first inserting rod 26 is used for extruding the groove wall of the spiral groove 28 to drive the second threaded rod 25 to rotate, so that the second moving seat 8 moves on the rotating second threaded rod 25, in the moving process of the second moving seat 8, the first motor 11 is started to drive the first threaded rod 12 to alternately rotate in the positive and negative directions, so that the penetrating plate 14 drives the pressure block 15 to move up and down to perform radial testing work at different positions on the finned tube, when the first moving seat 5 drives the pressure disc 6 to move and press tightly on the finned tube, the pressure disc 6 is used for performing pressure testing work along the transverse direction of the finned tube, pressure sensors are arranged on the pressure disc 6 and the pressure block 15, so that pressure testing work can be performed along the radial direction and the transverse direction of the finned tube, and the finned tube is more accurately tested.

[0043] Referring to Figures 1-6 The material displacement structure comprises a third motor 30 installed on one side of the top end of the support plate 29, a rotating disc 31 installed at one end of the output shaft of the third motor 30, a plurality of connecting rods 32 connected to the side surface of the rotating disc 31, a switching ring 48 installed at one end of the connecting rod 32, a plurality of mounting plates 33 provided on the switching ring 48 through a turnover structure, and a clamping and fixing structure arranged on each mounting plate 33.

[0044] The abutting fixing structure comprises an electric push rod 41 mounted on the mounting plate 33, a middle rod 39 connected to the middle of the side of the electric push rod 41 away from the electric push rod 41, an insertion cylinder 34 movably sleeved on the middle rod 39, an insertion block 35 provided at one end of the insertion cylinder 34, the insertion block 35 being in the shape of a truncated cone, a plurality of second fixing strips 44 provided on the side of the middle rod 39, the left end face of each second fixing strip 44 being in the shape of an inclined face, a plurality of through grooves 37 formed in the inner wall of the insertion cylinder 34, an abutting block 38 movably inserted into each through groove 37, an inner strip 42 connected to the inner end of the abutting block 38, an extension rod 45 connected between the inner strip 42 and the inner wall of the insertion cylinder 34, a spring 46 sleeved on the extension rod 45, the two ends of the spring 46 being connected to the inner strip 42 and the inner wall of the insertion cylinder 34 respectively, an extrusion wheel 47 mounted at one end of the inner strip 42, and an end sleeve 40 movably sleeved on the middle rod 39 and provided at the other end of the insertion cylinder 34, the output shaft of the electric push rod 41 being connected to the end sleeve 40 at one end;

[0045] The overturning structure comprises a plurality of grooves 49 formed in the side of the switching ring 48, an inner plate 54 connected to the inner wall of the switching ring 48 at the position of each groove 49, a driving strip 53 movably inserted into the inner plate 54, an overturning rod 50 rotatably connected between the groove walls on the two sides of the groove 49, an overturning plate 51 movably sleeved on the two ends of the overturning rod 50, the overturning plate 51 being connected to the mounting plate 33 at one end, a gear 52 movably sleeved on the overturning rod 50, and teeth on the driving strip 53 being meshingly connected to the gear 52, the driving structure being provided between the driving strip 53 and the support plate 29;

[0046] The driving structure comprises a second insertion rod 58 connected to one end of the driving strip 53, a fixed disc 55 fixedly provided at the other side top end of the support plate 29, an arc-shaped groove 56 formed in the fixed disc 55, a second driving groove 57 formed in the fixed disc 55 and communicating between the two ends of the arc-shaped groove 56, and the second insertion rod 58 being movably inserted into the arc-shaped groove 56 at one end;

[0047] The storage structure comprises two L-shaped plates 59 which are fastened by bolts on the right side of the bottom plate 1 at two corners, one end of one of the L-shaped plates 59 is provided with a storage frame 60, a limiting edge 43 is arranged at the front edge of the storage frame 60, the storage frame 60 is arranged to be inclined downward towards the side close to the support plate 29, one end of the other L-shaped plate 59 is provided with a discharging frame 36, the discharging frame 36 is arranged to be inclined downward towards the side away from the support plate 29, first, the finned tube to be tested is stored in the storage frame 60, the third motor 30 on the support plate 29 is started to drive the rotating disc 31 and the switching ring 48 to rotate as a whole, when the insertion cylinder 34 moves to the position of the storage frame 60, the electric push rod 41 on the corresponding mounting plate 33 is started to drive the insertion cylinder 34 on the middle rod 39 to move, in the process of movement of the insertion cylinder 34, the extrusion wheel 47 is rolled onto the second fixed strip 44, so that after the insertion cylinder 34 and the insertion block 35 are inserted into the finned tube as a whole, the abutting block 38 is moved to abut against the inner wall of the finned tube to fix the finned tube, then the switching ring 48 continues to rotate to take out the finned tube to be tested from the storage frame 60, when the switching ring 48 drives the corresponding second insertion rod 58 to slide from the arc-shaped groove 56 to the second driving groove 57, the driving strip 53 is pulled to move on the switching ring 48 towards the direction close to the rotating disc 31, the gear 52 drives the turnover plate 51 and the finned tube to turn by 180 degrees, when the switching ring 48 drives the finned tube to rotate to the support seat 4, the electric push rod 41 is started to drive the insertion cylinder 34 to move reversely, so as to loosen the finned tube and pull out the insertion cylinder 34 from the finned tube, at this time, the pressure test work can be carried out on the support seat 4, when the test work is finished, the electric push rod 41 drives the insertion cylinder 34 to insert into the finned tube, the abutting block 38 is used to continue to abut against and fix the finned tube, then the switching ring 48 continues to rotate, in this process, the switching ring 48 drives the second insertion rod 58 to slide from the second driving groove 57 to the arc-shaped groove 56, the driving strip 53 is driven to move reversely to reset, so as to drive the turnover plate 51 and the finned tube to turn reversely by 180 degrees, then the switching ring 48 drives the tested finned tube to move to the discharging frame 36, the electric push rod 41 is started to drive the insertion cylinder 34 to pull out from the finned tube, and the finned tube is discharged to the discharging frame 36 to be discharged, so that the test work of the finned tube can be realized.

[0048] The implementation principle of the pressure testing device for the finned tube is as follows: first, the finned tube to be tested is stored in the storage frame 60, the third motor 30 on the support plate 29 is started to drive the rotating disc 31 and the switching ring 48 to rotate as a whole, when the insertion cylinder 34 moves to the position of the storage frame 60, the electric push rod 41 on the corresponding mounting plate 33 is started to drive the insertion cylinder 34 on the end sleeve 40 to move on the middle rod 39, in the moving process of the insertion cylinder 34, the extrusion wheel 47 is rolled to the second fixed strip 44, so that the insertion cylinder 34 and the insertion block 35 are inserted into the finned tube, and then the abutting block 38 is moved to abut against the inner wall of the finned tube to fix the finned tube, then the switching ring 48 continues to rotate to take out the finned tube to be tested from the storage frame 60, when the switching ring 48 drives the corresponding second insertion rod 58 to slide from the arc-shaped groove 56 to the second driving groove 57, the driving strip 53 is pulled to move on the switching ring 48 towards the rotating disc 31, the rotating plate 51 and the finned tube are driven by the gear 52 to rotate by 180 degrees, when the switching ring 48 drives the finned tube to rotate to the support seat 4, the electric push rod 41 is started to drive the insertion cylinder 34 to move reversely, so that the finned tube is loosened, and the insertion cylinder 34 is pulled out of the finned tube, then the second motor 18 is started to drive the bidirectional screw rod to rotate, the directions of the threads on the left and right parts of the bidirectional screw rod are opposite, so that the two first moving seats 5 drive the pressure disc 6 to move towards the end part of the finned tube, in the moving process of the first moving seat 5, the one end of the driving rod 20 is driven to slide from the first driving groove 23 to the middle groove 22, the lifting cylinder 7 is driven by the driving rod 20 to move upwards on the second vertical plate 19, so that the pressure disc 6 can move to the same horizontal height of the finned tube, and the limiting rod 17 is also driven to move and abut against the side surface of the finned tube to limit the finned tube on the support seat 4, and the movement of the first moving seat 5 drives the fixed rod 24 to move, the first insertion rod 26 at one end of the fixed rod 24 moves in the screw groove 28 on the second threaded rod 25, the first insertion rod 26 is used to extrude the groove wall of the screw groove 28 to drive the second threaded rod 25 to rotate, so that the second moving seat 8 moves on the rotating second threaded rod 25, in the moving process of the second moving seat 8, the first motor 11 is started to drive the first threaded rod 12 to rotate in the positive and negative directions alternately, so that the penetrating plate 14 drives the pressure block 15 to move up and down, and the radial testing work is performed at different positions on the finned tube, when the first moving seat 5 drives the pressure disc 6 to move and press tightly on the finned tube, the pressure testing work is performed on the finned tube in the transverse direction by the pressure disc 6, and the pressure sensors are arranged on the pressure disc 6 and the pressure block 15, so that the pressure testing work can be performed on the finned tube in the radial direction and the transverse direction, the finned tube is tested more accurately, when the testing work is completed, the second motor 18 is started to drive the bidirectional screw rod to rotate reversely, the first moving seat 5 and the second moving seat 8 move reversely to reset, at this time, the electric push rod 41 is started to drive the insertion cylinder 34 to insert into the finned tube, the abutting block 38 is used to continue to abut against and fix the finned tube, and then the switching ring 48 continues to rotate, in this process,The switching ring 48 drives one end of the second insertion rod 58 to slide from the second driving groove 57 to the arc-shaped groove 56, drives the driving strip 53 to move reversely to reset, thereby driving the turnover plate 51 and the finned tube to turn reversely by half a circle as a whole, and then the switching ring 48 drives the tested finned tube to shift to the discharging frame 36, and the electric push rod 41 is started to drive the insertion cylinder 34 to draw out from the finned tube, and the finned tube is discharged to the discharging frame 36 to be discharged, so that the testing work of the finned tube can be realized.

[0049] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A pressure testing device for finned tubes comprising a base plate (1) characterised in that: The bottom plate (1) is provided with a support plate (29) on the right side, a material displacement structure is arranged at the top end of the support plate (29), a transverse test structure is arranged on the bottom plate (1), storage structures are arranged at two corners on the right side of the bottom plate (1), and a support structure is arranged in the middle of the bottom plate (1); The transverse test structure comprises a first horizontal groove (2) formed in the bottom plate (1), a bidirectional threaded rod is rotatably inserted into the first horizontal groove (2), a second motor (18) is mounted on the left side of the bottom plate (1), one end of the output shaft of the second motor (18) is connected with the bidirectional threaded rod, first moving seats (5) are slidably arranged at both ends in the first horizontal groove (2), a threaded groove is formed in the first moving seat (5) for the bidirectional threaded rod to pass through, a lifting cylinder (7) is arranged on the first moving seat (5) through a lifting structure, a pressure disc (6) is mounted at the top end of the lifting cylinder (7), and a limiting structure is arranged on the lifting cylinder (7); The support structure comprises two groups of support rods (3) connected to the bottom plate (1), the top end of each group of two support rods (3) is provided with a support seat (4), and the two groups of support rods (3) are arranged between the two first moving seats (5); and a radial test structure is arranged on the bottom plate (1) between the two groups of support rods (3); The radial test structure comprises two second moving seats (8) arranged on the bottom plate (1), a transmission structure is arranged between the second moving seat (8) and the first moving seat (5), a first vertical plate (9) is connected to the second moving seat (8), a through groove (10) is formed in the first vertical plate (9), a first motor (11) is mounted on the lower groove wall of the through groove (10), a first threaded rod (12) is connected to the output shaft of the first motor (11), a lifting plate (13) is movably arranged in the through groove (10), a threaded groove is formed in the lifting plate (13) for the first threaded rod (12) to pass through, and a penetrating plate (14) is connected to the lifting plate (13) at both ends and movably penetrates out of the first vertical plate (9); and a pressure block (15) is mounted at the top end of the penetrating plate (14); The material displacement structure comprises a third motor (30) mounted on one side of the support plate (29) at the top end, a rotating disc (31) is mounted on one end of the output shaft of the third motor (30), a plurality of connecting rods (32) are connected to the side of the rotating disc (31), a switching ring (48) is mounted on one end of the connecting rod (32), a plurality of mounting plates (33) are arranged on the switching ring (48) through a turnover structure, and a clamping and fixing structure is arranged on each mounting plate (33). The abutting fixing structure comprises a motor-driven push rod (41) mounted on a mounting plate (33), the mounting plate (33) is connected with a middle rod (39) at the middle of the side face away from the motor-driven push rod (41), a plug-in cylinder (34) is movably sleeved on the middle rod (39), a plug-in block (35) is arranged at one end of the plug-in cylinder (34), the plug-in block (35) is in the shape of a truncated cone, a plurality of second fixing strips (44) are arranged on the side face of the middle rod (39), the left end face of each second fixing strip (44) is in the shape of an inclined face, a plurality of through grooves (37) are formed in the inner wall of the plug-in cylinder (34), and an abutting block (38) is movably arranged in each through groove (37), an inner strip (42) is connected to the inner end of the abutting block (38), a telescopic rod (45) is connected between the inner strip (42) and the inner wall of the plug-in cylinder (34), a spring (46) is sleeved on the telescopic rod (45), the two ends of the spring (46) are connected to the inner strip (42) and the inner wall of the plug-in cylinder (34) respectively, an extrusion wheel (47) is mounted at one end of the inner strip (42), and an end sleeve (40) movably sleeved on the middle rod (39) is arranged at the other end of the plug-in cylinder (34), and the output shaft of the motor-driven push rod (41) is connected to the end sleeve (40).

2. The pressure testing device for a finned tube according to claim 1, wherein: The limiting structure comprises first fixing strips (16) connected to the top ends of the front and rear sides of the lifting cylinder (7), and a limiting rod (17) is connected between two first fixing strips (16) in each group.

3. The pressure testing device for a finned tube according to claim 1, wherein: The lifting structure comprises a driving rod (20) connected to the bottom ends of the front and rear sides of the lifting cylinder (7), horizontal plates (21) are arranged on the upper surface of the bottom plate (1) and at the front and rear sides of the bottom plate (1), a middle groove (22) is formed in the horizontal plate (21), two first driving grooves (23) are formed in the horizontal plate (21), the two first driving grooves (23) are respectively communicated with the two ends of the middle groove (22), one end of the driving rod (20) is movably inserted into the first driving groove (23), the lifting cylinder (7) is movably sleeved on the second vertical plate (19), and the bottom end of the second vertical plate (19) is connected to the first moving seat (5).

4. The pressure testing device for a finned tube according to claim 1, wherein: The transmission structure comprises a fixed rod (24) connected to the first moving seat (5), a second threaded rod (25) movably sleeved on the fixed rod (24), the second threaded rod (25) is hollow, a sleeve plate (61) is rotatably sleeved on the second threaded rod (25), the bottom end of the sleeve plate (61) is fixedly connected to the bottom plate (1), the second threaded rod (25) is rotatably arranged in a threaded groove formed in the second moving seat (8), a second horizontal groove (27) is formed in the second threaded rod (25), a spiral groove (28) communicated with the second horizontal groove (27) is formed in the second threaded rod (25), and one end of the fixed rod (24) is connected to a first plug-in rod (26) movably inserted into the second horizontal groove (27).

5. The pressure testing device for a finned tube according to claim 1, wherein: The turnover structure includes multiple grooves (49) opened in the side surface of the switching ring (48), the inner wall of the switching ring (48) is connected with an inner plate (54) at the position of each groove (49), the inner plate (54) movably passes through a driving strip (53), the groove walls on both sides of the groove (49) are rotationally connected with a turnover rod (50), the turnover rod (50) is fixedly sleeved with a turnover plate (51) at both ends, one end of the turnover plate (51) is connected to the mounting plate (33), a gear (52) is sleeved on the turnover rod (50), the driving strip (53) is provided with gear teeth meshed and connected with the gear (52), and a driving structure is arranged between the driving strip (53) and the supporting plate (29).

6. The pressure testing device for a finned tube according to claim 5, wherein: The driving structure includes a second insertion rod (58) connected to one end of the driving strip (53), a fixed disc (55) is fixedly arranged at the other end of the supporting plate (29), an arc-shaped groove (56) is opened in the fixed disc (55), a second driving groove (57) is opened in the fixed disc (55) and communicates with both ends of the arc-shaped groove (56), and one end of the second insertion rod (58) is movably inserted into the arc-shaped groove (56).

7. The pressure testing device for a finned tube according to claim 1, wherein: The storage structure includes two L-shaped plates (59) fastened on the right side of the bottom plate (1) by bolts, one end of one of the L-shaped plates (59) is mounted with a storage frame (60), a limiting rail (43) is arranged on the front edge of the storage frame (60), the storage frame (60) is arranged downwardly and inclined towards the side close to the supporting plate (29), and one end of the other L-shaped plate (59) is mounted with a discharging frame (36), the discharging frame (36) is arranged downwardly and inclined towards the side away from the supporting plate (29).

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