Heat Resistance Detection Device and Heat Resistance Detection Method for Lightweight Titanium Capillaries of Heat Exchangers

Abstract

The present invention relates to the field of pipe fitting performance detection, specifically a heat resistance detection device and a heat resistance detection method for a lightweight titanium capillary tube of a heat exchanger. The heat resistance detection device includes a cabinet body and a horizontal plate fixed inside the cabinet body. The horizontal plate divides the cabinet body into a first chamber and a second chamber which are distributed up and down; the heat resistance detection device further includes: fasteners, one is movably provided on the horizontal plate and the top wall of the cabinet body respectively. The fasteners are arranged in a conical structure, and a through hole is provided at the center thereof. Each of the two fasteners is connected with a set of elastic conduction mechanisms. The elastic conduction mechanisms can prompt the two fasteners to respectively abut against the two ends of the pipe fitting to be tested, so as to clamp and fix the pipe fitting to be tested; finally, during the detection process, the heat resistance detection process of the pipe fitting can be carried out step by step, which is convenient for the staff to just grasp the upper limit of the heat resistance performance of the pipe fitting and the quality differences of products in different batches, and is suitable for popularization and use.

Description

Technical Field

[0001] The present invention relates to the field of performance detection of pipe fittings, in particular to a heat resistance detection device and a heat resistance detection method for lightweight titanium capillary tubes of heat exchangers. Background Art

[0002] The heat exchange tube is an important component in the heat exchanger, usually a straight tube or a U-shaped tube, which is used to transfer part of the heat of the hot fluid to the cold fluid. Therefore, the heat resistance of the heat exchange tube has relatively high requirements. If the heat resistance performance of the heat exchange tube is poor, at too high temperatures, the pipeline material is likely to change, making the pipeline brittle, and the pipe wall may expand or even rupture, thus causing danger.

[0003] Therefore, in the production of heat exchangers, it is often necessary to detect the heat resistance of the heat exchange tubes to ensure the working safety of the heat exchangers. The existing heat resistance detection equipment usually heats the pipe fittings to a specific temperature and then determines whether there are defects in the heat exchange tubes. Although this detection method can meet the production detection, it cannot know the upper limit of the heat resistance of the heat exchange tubes and the quality differences of different batches of products, and its practicability is not high, making it difficult to achieve the ideal detection effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a heat resistance detection device and a heat resistance detection method for lightweight titanium capillary tubes of heat exchangers to solve the problems raised in the above background art.

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

[0006] A heat resistance detection device, including a cabinet body and a horizontal plate fixed inside the cabinet body. The horizontal plate divides the cabinet body into a first chamber and a second chamber distributed up and down;

[0007] The heat resistance detection device further includes:

[0008] Fasteners, one is movably provided on the horizontal plate and the top wall of the cabinet body respectively. The fasteners are arranged in a conical structure, and a through hole is provided at the center thereof. Each of the two fasteners is connected with a set of elastic conduction mechanisms, and the elastic conduction mechanisms can cause the two fasteners to abut against both ends of the pipe fitting to be tested respectively, so as to clamp and fix the pipe fitting to be tested;

[0009] Cylinders, a plurality of which are movably provided in the second chamber for containing hot water. The plurality of cylinders are equidistantly distributed along the circumference, and the temperature of the water increases or decreases along the circumferential direction. The plurality of cylinders are connected with an assembly mechanism provided in the second chamber and are also connected with a pumping mechanism provided in the cabinet body. The pumping mechanism can circulate the water in the cylinders through the pipe fitting to be tested;

[0010] The visual detector is movably arranged in the first chamber and connected to a threaded driving mechanism installed in the first chamber. The threaded driving mechanism can drive the visual detector to complete a reciprocating movement along the axial direction of the pipe to be measured after the water circulation process ends, and prompt the assembly mechanism to drive the plurality of cylinders to rotate circumferentially, so as to increase the water temperature in the circulation path. At the same time, the sliding cooperation mechanism arranged in the first chamber is triggered, and the elastic conduction mechanism is used to drive the fastener to drive the pipe to rotate.

[0011] As a further solution of the present invention: The elastic conduction mechanism includes a vertical pipe rotatably installed on the top wall of the cabinet body and a sleeve fixed to the fastener by a limiting structure and slidably sleeved on the vertical pipe. A first annular protrusion and a second annular protrusion are respectively fixed on the vertical pipe and the sleeve, and a cylindrical spring is also sleeved on the outer periphery of the vertical pipe. The two ends of the cylindrical spring are respectively connected to the first annular protrusion and the second annular protrusion.

[0012] As a further solution of the present invention: The assembly mechanism includes a rotating frame rotatably installed in the first chamber and an assembly cylinder fixed to the rotating frame. The rotating shaft of the rotating frame is connected to the threaded driving mechanism through a transmission structure. A plurality of cylinders are fixedly arranged on the assembly cylinder at equal circumferential intervals;

[0013] Wherein, through holes are provided in both the upper and lower parts of the cylinder, annular tracks are provided at both ends of the assembly cylinder, diversion holes coinciding with the through holes are provided in the annular tracks, and a ring is hermetically slidably arranged in each of the two annular tracks.

[0014] As a further solution of the present invention: The pumping mechanism includes a water pump installed in the first chamber. The water inlet of the water pump is connected to the ring at the bottom of the assembly cylinder through a second conduit. The ring at the top of the assembly cylinder is connected to an elbow fixed on the cross plate. The end of the elbow away from the ring is hermetically rotatably connected to the vertical pipe;

[0015] The water outlet of the water pump is fixedly connected with a sealing kit through a first conduit. The sealing kit is sleeved on the vertical pipe and is hermetically rotatably connected to the vertical pipe, and a plurality of through ports are provided on the vertical pipe at equal circumferential intervals.

[0016] As a further solution of the present invention: The threaded driving mechanism includes a driving motor installed in the cabinet body, a lead screw rotatably installed in the first chamber and connected to the output end of the driving motor, and a threaded sleeve sleeved on the lead screw and threadedly connected to the lead screw. The threaded sleeve is fixedly connected with an assembly plate, the visual detector is installed on the assembly plate, and the sliding cooperation mechanism is connected to the assembly plate.

[0017] As a further solution of the present invention: The sliding fit mechanism includes a driven shaft rotatably installed in the first chamber and a driving tube slidably sleeved on the driven shaft and fixed to the assembly plate. A convex column is provided on the inner wall of the driving tube, and a spiral groove adapted to the convex column is provided on the outer wall of the driven shaft. The convex column extends into the spiral groove and is slidably connected to the driven shaft. The driven shaft is also connected to the riser through a second transmission belt.

[0018] As a further solution of the present invention: The transmission structure includes a ratchet wheel and a transmission shaft rotatably installed in the first chamber and the second chamber respectively. The transmission shaft is connected to the rotating shaft of the ratchet wheel through a first transmission belt, and the transmission shaft is connected to the rotating shaft of the rotating frame through a bevel gear set. A ratchet tooth plate cooperating with the ratchet wheel is also fixed to the side of the assembly plate.

[0019] A heat resistance detection method for a lightweight titanium capillary tube of a heat exchanger, using the heat resistance detection device as described above, includes the following steps:

[0020] Step 1, using the elastic support forces of two groups of elastic conduction mechanisms, the pipe to be tested is clamped between two fasteners;

[0021] Step 2, the pumping mechanism works to circulate hot water through the pipe for 5 - 10 minutes;

[0022] Step 3, the threaded drive mechanism works to drive the visual detector to move axially along the pipe, and the sliding fit mechanism drives the pipe to rotate. The visual detector collects information on the pipe that has undergone hot water circulation treatment, and a computer analyzes the collected information;

[0023] Step 4, the positions of multiple cylinders are changed, and the pumping mechanism uses water at a higher temperature to conduct hot water circulation treatment on the pipe again. After the treatment, the visual detector collects information on the pipe again, and a computer analyzes and processes it.

[0024] Compared with the prior art, the beneficial effects of the present invention are: The present invention has a novel design. When detecting the heat resistance of a pipe, after each round of heat circulation, the threaded drive mechanism can drive the visual detector to reciprocate axially along the pipe, and at the same time, the sliding fit mechanism drives the pipe to rotate, so as to facilitate the visual detector to collect information on the pipe. At the same time, when the assembly mechanism is triggered, the positions of multiple cylinders can be changed, so that the water temperature in the circulation path changes in an increasing trend. Therefore, the heat resistance detection process of the pipe is carried out step by step, which is convenient for the staff to accurately grasp the upper limit of the heat resistance performance of the pipe and the quality differences between different batches of products, and is suitable for popularization and use. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of an embodiment of a heat resistance detection device.

[0026] Figure 2 It is a schematic structural diagram of another angle of an embodiment of a heat resistance detection device.

[0027] Figure 3 It is a schematic internal structure diagram of a cabinet in an embodiment of a heat resistance detection device.

[0028] Figure 4 It is a schematic structural diagram of another angle of the interior of a cabinet in an embodiment of a heat resistance detection device.

[0029] Figure 5 It is Figure 4 an enlarged structural diagram of part A in

[0030] Figure 6 It is an exploded structural diagram of an assembly mechanism in an embodiment of a heat resistance detection device.

[0031] Figure 7 It is Figure 6 a schematic structural diagram of another angle.

[0032] Figure 8 It is Figure 7 an enlarged structural diagram of part B in

[0033] Figure 9 It is a schematic structural diagram of a transmission structure in an embodiment of a heat resistance detection device.

[0034] In the figure: 1. Cabinet; 2. Fastener; 3. Cylindrical spring; 4. Vertical pipe; 401. Strip-shaped protrusion; 402. Through hole; 403. First annular protrusion; 5. Sleeve; 501. Strip-shaped groove; 502. Second annular protrusion; 6. Sealing kit; 7. First conduit; 8. Water pump; 9. Second conduit; 10. Horizontal plate; 11. Elbow; 12. Ring; 13. Rotating frame; 14. Assembly cylinder; 1401. Annular track; 15. Cylinder; 16. Bevel gear set; 17. Transmission shaft; 18. First transmission belt; 19. Ratchet; 20. Ratchet plate; 21. Driving motor; 22. Visual detector; 23. Assembly plate; 24. Lead screw; 25. Threaded sleeve; 26. Driven shaft; 27. Driving pipe; 28. Second transmission belt. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] In addition, the elements in the present invention are referred to as "fixed to" or "arranged on" another element. It can be directly on another element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to another element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0037] Please refer to Figures 1 - 9 , in the embodiment of the present invention, a heat resistance detection device includes a cabinet 1 and a horizontal plate 10 fixed in the cabinet 1. The horizontal plate 10 divides the cabinet 1 into a first chamber and a second chamber which are distributed up and down;

[0038] The heat resistance detection device further includes:

[0039] Fasteners 2, one is movably provided on the horizontal plate 10 and the top wall of the cabinet 1 respectively. The fasteners 2 are arranged in a conical structure, and a through hole is provided at the center thereof. Each of the two fasteners 2 is connected with a set of elastic conduction mechanisms. The elastic conduction mechanisms can prompt the two fasteners 2 to abut against both ends of the pipe to be tested respectively, so as to clamp and fix the pipe to be tested;

[0040] Cylinders 15, a plurality of which are movably arranged in the second chamber for containing hot water. The plurality of cylinders 15 are equidistantly distributed along the circumference. The temperature of the water increases or decreases along the circumference. The plurality of cylinders 15 are connected with an assembly mechanism arranged in the second chamber and are also connected with a pumping mechanism arranged in the cabinet 1. The pumping mechanism can circulate the water in the cylinders 15 through the pipe to be tested;

[0041] A visual detector 22 is movably arranged in the first chamber and is connected with a threaded driving mechanism installed in the first chamber. The threaded driving mechanism can drive the visual detector 22 to complete a reciprocating movement along the axial direction of the pipe to be tested after the water circulation process ends, and prompt the assembly mechanism to drive the plurality of cylinders 15 to rotate circumferentially, so as to increase the water temperature in the circulation path. At the same time, a sliding fit mechanism arranged in the first chamber is triggered, and the fasteners 2 are driven to drive the pipe to rotate through the elastic conduction mechanism.

[0042] It should also be supplemented that a cabinet door is provided on the cabinet body 1 so that during actual work, the staff can open the first chamber and the second chamber. Specifically, during the detection work, the staff first places the pipe fitting to be tested between the two fasteners 2, and the elastic conduction mechanism applies force to the ends of the pipe fitting to be tested simultaneously. Since the fastener 2 is arranged in a conical structure, thus, a part of the fastener 2 can enter into the pipe fitting to be tested. On the one hand, it realizes the effective clamping and fixing function of the pipe fitting to be tested. On the other hand, since a through hole is provided at the center of the fastener 2, thus, subsequently, the pumping mechanism can pass through the through hole through the pipe fitting to be tested, causing the pipe fitting to be tested to heat up;

[0043] It should be noted that in order to ensure the sealing performance of the connection between the pipe fitting and the fastener 2, a sealing gasket can be provided on the outer periphery of the fastener 2. In addition, the setting of the sealing gasket can also increase the friction force between the fastener 2 and the pipe fitting, thereby providing guarantee for the subsequent elastic conduction mechanism to drive the pipe fitting to rotate smoothly;

[0044] In addition, electric heating components (using existing technologies) are provided in multiple cylinders 15. However, the power of the electric heating components in each cylinder 15 is different, so that the water temperatures in the respective cylinders 15 are different (i.e., increasing or decreasing circumferentially).

[0045] After each hot water circulation process ends, the threaded drive mechanism will work. The threaded drive mechanism will drive the vision detector 22 to complete a reciprocating motion along the axial direction of the pipe fitting. Furthermore, the vision detector 22 will collect information on the appearance of the pipe fitting and send the collected image information to the computer. The computer will analyze the received information to determine whether the pipe fitting that has undergone hot water circulation is damaged (such as expansion deformation, rupture, etc.). At the same time, the sliding fit mechanism is triggered, and the sliding fit mechanism will drive the fastener 2 to drive the pipe fitting to rotate through the elastic conduction mechanism to ensure the comprehensiveness of the image information collection of the pipe fitting by the vision detector 22. Secondly, during the latter part of the descending stroke of the vision detector 22, the assembly mechanism will be triggered. Thus, the assembly mechanism will drive multiple cylinders 15 to rotate circumferentially so that the cylinder 15 containing hotter water inside is connected to the circulation path. If, after analysis by the computer, the pipe fitting has no defects, the pumping mechanism will work again, causing hotter water to circulate through the pipe fitting;

[0046] In summary, when performing heat resistance detection on pipe fittings, after each round of heat cycle, the threaded drive mechanism can drive the vision detector 22 to reciprocate along the axial direction of the pipe fitting, and at the same time, the pipe fitting is driven to rotate by the sliding fit mechanism, so as to facilitate the vision detector 22 to collect information of the pipe fitting. At the same time, when the assembly mechanism is triggered, the positions of multiple cylinders 15 can be changed, so that the water temperature in the circulation path changes in an increasing trend. Therefore, the heat resistance detection process of the pipe fitting is carried out step by step, which is convenient for the staff to just grasp the upper limit of the heat resistance performance of the pipe fitting and the quality differences of products in different batches, and is suitable for popularization and use.

[0047] Since the structures of the two sets of elastic conduction mechanisms are the same, therefore, the following will describe in detail a set provided on the top wall of the cabinet 1:

[0048] Please refer to again Figure 5 and Figure 8 , the elastic conduction mechanism includes a vertical pipe 4 rotatably installed on the top wall of the cabinet 1 and a sleeve 5 that is slidably sleeved with the vertical pipe 4 through a limiting structure and fixedly connected to the fastener 2. First annular protrusions 403 and second annular protrusions 502 are respectively fixed on the vertical pipe 4 and the sleeve 5, and a cylindrical spring 3 is further sleeved on the outer periphery of the vertical pipe 4. The two ends of the cylindrical spring 3 are respectively connected to the first annular protrusion 403 and the second annular protrusion 502.

[0049] Furthermore, the limiting structure includes two strip-shaped protrusions 401 formed on the outer wall of the vertical pipe 4 and two strip-shaped grooves 501 provided on the inner wall of the sleeve 5. The strip-shaped grooves 501 are adapted to the strip-shaped protrusions 401, and both are parallel to the central axis of the vertical pipe 4, the sleeve 5 and the fastener 2;

[0050] Secondly, for the elastic conduction mechanism provided on the cross plate 10, the vertical pipe 4 therein is connected to the sliding fit mechanism. When the threaded drive mechanism drives the vision detector 22 to move along the axial direction of the pipe fitting, the sliding fit mechanism is triggered, which will drive the vertical pipe 4 to rotate. Furthermore, the vertical pipe 4 can drive the sleeve 5 to rotate through the strip-shaped protrusions 401 and the strip-shaped grooves 501. Under the elastic support of the cylindrical spring 3, the pipe fitting clamped between the two fasteners 2 can rotate to ensure the comprehensiveness of the image information collection of the pipe fitting by the vision detector 22 and guarantee the accuracy of the subsequent computer analysis results.

[0051] Please refer to again Figure 6 and Figure 7, the assembly mechanism includes a rotating frame 13 rotatably installed in the first chamber and an assembly cylinder 14 fixed to the rotating frame 13. The rotating shaft of the rotating frame 13 is connected to the threaded drive mechanism through a transmission structure. A plurality of the cylinders 15 are fixedly arranged on the assembly cylinder 14 at equal circumferential intervals. Through holes are provided in both the upper and lower parts of the cylinder 15. An annular track 1401 is provided at each end of the assembly cylinder 14. A diversion hole coinciding with the through hole is provided in the annular track 1401, and a ring 12 is hermetically slidably arranged in each of the two annular tracks 1401.

[0052] The pumping mechanism includes a water pump 8 installed in the first chamber. The water inlet of the water pump 8 is connected to the ring 12 at the bottom of the assembly cylinder 14 through a second conduit 9. The ring 12 at the top of the assembly cylinder 14 is connected to an elbow 11 fixed to the cross plate 10. The end of the elbow 11 away from the ring 12 is hermetically rotatably connected to the riser 4. The water outlet of the water pump 8 is fixedly connected to a sealing kit 6 through a first conduit 7. The sealing kit 6 is sleeved on the riser 4 and is hermetically rotatably connected to the riser 4. A plurality of through ports 402 are provided on the riser 4 at equal circumferential intervals.

[0053] During hot water circulation, the water pump 8 operates, and the hot water in the cylinder 15 is pumped through the through hole and the second conduit 9. The through holes on the other cylinders 15 are blocked by the ring 12. Each time, only one cylinder 15 can be connected to the circulation path by the two rings 12;

[0054] Subsequently, the hot water then enters the pipe fitting through the first conduit 7, the sealing kit 6, the through port 402, the riser 4, the sleeve 5, and the through hole at the center of the fastener 2, and then returns to the cylinder 15 through the elbow 11, thereby achieving the effect of hot water circulation.

[0055] Please refer to again Figure 3 , Figure 4 and Figure 9 , the threaded drive mechanism includes a drive motor 21 installed in the cabinet 1, a lead screw 24 rotatably installed in the first chamber and connected to the output end of the drive motor 21, and a threaded sleeve 25 sleeved on the lead screw 24 and threadedly connected to the lead screw 24. The threaded sleeve 25 is fixedly connected to an assembly plate 23. The visual detector 22 is installed on the assembly plate 23. The sliding fit mechanism is connected to the assembly plate 23.

[0056] The sliding fitting mechanism includes a driven shaft 26 rotatably installed in the first chamber and a driving tube 27 slidably sleeved on the driven shaft 26 and fixed to the assembly plate 23. A boss is provided on the inner wall of the driving tube 27, and a spiral groove adapted to the boss is provided on the outer wall of the driven shaft 26. The boss extends into the spiral groove and is slidably connected to the driven shaft 26. The driven shaft 26 is also connected to the standpipe 4 via a second transmission belt 28.

[0057] The transmission structure includes a ratchet 19 and a transmission shaft 17 which are rotatably installed in the first chamber and the second chamber respectively. The transmission shaft 17 is connected to the rotating shaft of the ratchet 19 through a first transmission belt 18, and the transmission shaft 17 is connected to the rotating shaft of the rotating frame 13 through a bevel gear set 16. A ratchet plate 20 that cooperates with the ratchet 19 is also fixed to the side of the assembly plate 23.

[0058] Specifically, the bevel gear set 16 includes a first bevel gear fixedly mounted on the end of the transmission shaft 17 and a second bevel gear fixedly mounted on the rotating shaft of the rotating frame 13 , and the first bevel gear meshes with the second bevel gear.

[0059] When the visual detector 22 detects the pipe fittings that have been treated with hot water circulation, the visual detector 22 completes a reciprocating motion along the axial direction of the pipe fitting. During the lifting process, the assembly plate 23 will drive the driving tube 27 to slide on the driven shaft 26. At this time, the protruding column on the inner wall of the driving tube 27 will slide with the spiral groove on the outer wall of the driven shaft 26, thereby causing the driven shaft 26 to rotate, so that the driven shaft 26 drives the vertical pipe 4 to rotate through the second transmission belt 28, so that the pipe fitting can rotate, ensuring the comprehensiveness of the information collection of the pipe fitting by the visual detector 22. In addition, in the latter part of the descent of the assembly plate 23, the ratchet on the ratchet plate 20 will pass through the ratchet wheel 19, and the ratchet will cooperate with the ratchet wheel 19. When the first transmission belt 18 is engaged, the ratchet 19 is rotated, so the rotating shaft of the ratchet 19 drives the transmission shaft 17 to rotate through the first transmission belt 18, and the transmission shaft 17 drives the rotating frame 13 to rotate through the bevel gear set 16, so that the positions of the plurality of cylinders 15 are changed (taking the state shown in the figure as an example, the number of cylinders 15 on the rotating frame 13 is 4, therefore, each time the ratchet 19 rotates, it drives the rotating frame 13 to rotate 90°), so that the temperature of each hot water cycle changes in an increasing trend, in the previous stroke of the assembly plate 23 rising, the ratchet on the ratchet plate 20 will pass through the ratchet 19 again, at this time, the ratchet will reciprocate (the ratchet is hinged on the ratchet plate 20 and is connected with a torsion spring), and the ratchet 19 does not rotate.

[0060] As another embodiment of the present invention, a heat resistance detection method for the lightweight titanium capillary of the heat exchanger is also proposed. Using the heat resistance detection device described above, it includes the following steps:

[0061] Step 1, using the elastic supporting forces of two sets of elastic conduction mechanisms, the pipe to be tested is clamped between two fasteners 2;

[0062] Step 2, the pumping mechanism works to circulate hot water through the pipe, and the circulation time is 5 - 10 minutes;

[0063] Step 3, the threaded driving mechanism works to drive the visual detector 22 to move axially along the pipe, and the sliding fit mechanism drives the pipe to rotate. The visual detector 22 collects information on the pipe that has undergone hot water circulation treatment, and a computer analyzes the collected information;

[0064] Step 4, the positions of multiple cylinders 15 are changed, and the pumping mechanism uses water at a higher temperature to conduct hot water circulation treatment on the pipe again. After the treatment, the visual detector 22 collects information on the pipe again, and a computer analyzes and processes it.

[0065] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

[0066] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Heat resistance testing device, characterized in that, It includes a cabinet body and a horizontal plate fixed inside the cabinet body. The horizontal plate divides the cabinet body into a first chamber and a second chamber which are distributed vertically. Fasteners are respectively movably provided on the horizontal plate and the top wall of the cabinet body. The fasteners are arranged in a conical structure, and a through hole is provided at the center thereof. Each of the two fasteners is connected with a set of elastic conduction mechanisms. The elastic conduction mechanisms urge the two fasteners to respectively abut against both ends of the pipe to be tested, so as to clamp and fix the pipe to be tested. A plurality of cylinders are movably provided in the second chamber for containing hot water. The plurality of cylinders are equidistantly distributed along the circumference, and the temperature of the water increases or decreases along the circumference. The plurality of cylinders are connected with an assembly mechanism provided in the second chamber and are also connected with a pumping mechanism provided in the cabinet body. The pumping mechanism circulates the water in the cylinders through the pipe to be tested. A visual detector is movably provided in the first chamber and is connected with a threaded driving mechanism installed in the first chamber. After the water circulation process ends, the threaded driving mechanism drives the visual detector to complete a reciprocating movement along the axial direction of the pipe to be tested, and urges the assembly mechanism to drive the plurality of cylinders to rotate circumferentially, so as to increase the water temperature in the circulation path. At the same time, a sliding cooperation mechanism provided in the first chamber is triggered, and the elastic conduction mechanism is used to drive the fasteners to drive the pipe to rotate. The threaded driving mechanism includes a driving motor installed in the cabinet body, a lead screw rotatably installed in the first chamber and connected with the output end of the driving motor, and a threaded sleeve sleeved on the lead screw and threadedly connected with the lead screw. The threaded sleeve is fixedly connected with an assembly plate, and the visual detector is installed on the assembly plate. The sliding cooperation mechanism is connected with the assembly plate. The assembly mechanism includes a rotating frame rotatably installed in the first chamber and an assembly cylinder fixed to the rotating frame. The rotating shaft of the rotating frame is connected with the threaded driving mechanism through a transmission structure. The plurality of cylinders are equidistantly fixed on the assembly cylinder along the circumference. Among them, through holes are provided in both the upper and lower parts of the cylinder, and an annular track is provided at each end of the assembly cylinder. A diversion hole coinciding with the through hole is provided in the annular track, and a ring is hermetically slidably provided in each of the two annular tracks.

2. The heat resistance detection device according to claim 1, wherein The elastic conduction mechanism includes a riser rotatably installed on the top wall of the cabinet body and a sleeve that is slidably sleeved on the riser through a limiting structure and fixedly connected with the fastener. A first annular protrusion and a second annular protrusion are respectively fixed on the riser and the sleeve. A cylindrical spring is also sleeved on the outer periphery of the riser, and both ends of the cylindrical spring are respectively connected with the first annular protrusion and the second annular protrusion.

3. The heat resistance detection device according to claim 2, wherein The limiting structure includes two strip-shaped protrusions formed on the outer wall of the riser and two strip-shaped grooves provided on the inner wall of the sleeve. The strip-shaped grooves are adapted to the strip-shaped protrusions, and the two are parallel to the central axes of the riser, the sleeve and the fastener.

4. The heat resistance detection device according to claim 3, characterized in that, The pumping mechanism includes a water pump installed in the first chamber. The water inlet of the water pump is connected with the ring located at the bottom of the assembly cylinder through a second conduit. The ring located at the top of the assembly cylinder is connected with an elbow fixed on the horizontal plate. The end of the elbow far from the ring is hermetically rotatably connected with the riser. The water outlet of the water pump is fixedly connected with a sealing kit through a first conduit. The sealing kit is sleeved on the riser and is hermetically rotatably connected with the riser. A plurality of through ports are equidistantly provided on the riser along the circumference.

5. The heat resistance detection device according to claim 4, characterized in that, The sliding fit mechanism includes a driven shaft rotatably installed in the first chamber and a driving tube slidably sleeved on the driven shaft and fixed to the assembly plate. A convex column is provided on the inner wall of the driving tube, and a spiral groove adapted to the convex column is provided on the outer wall of the driven shaft. The convex column extends into the spiral groove and is slidably connected to the driven shaft. The driven shaft is also connected to the riser pipe through a second transmission belt.

6. The heat resistance detection device according to claim 5, characterized in that, The transmission structure includes a ratchet wheel and a transmission shaft respectively rotatably installed in the first chamber and the second chamber. The transmission shaft is connected to the rotating shaft of the ratchet wheel through a first transmission belt, and the transmission shaft is connected to the rotating shaft of the rotating frame through a bevel gear set. A ratchet tooth plate cooperating with the ratchet wheel is also fixed to the side of the assembly plate.

7. Heat resistance detection method for lightweight titanium capillary tubes of a heat exchanger, using the heat resistance detection device as described in claim 6, characterized in that, It includes the following steps: Step 1, using the elastic supporting force of the two groups of elastic conduction mechanisms, the pipe to be tested is clamped between the two fasteners; Step 2, the pumping mechanism works to circulate hot water through the pipe for 5 - 10 minutes; Step 3, the threaded driving mechanism works to drive the vision detector to move axially along the pipe, and the sliding fit mechanism drives the pipe to rotate. The vision detector collects information on the pipe that has undergone hot water circulation treatment, and the computer analyzes the collected information; Step 4, the positions of the multiple cylinders are changed, and the pumping mechanism uses water at a higher temperature to perform hot water circulation treatment on the pipe again. After the treatment, the vision detector collects information on the pipe again, and the computer analyzes and processes it.

Images