Automatic plugging device for end hole of heat exchange tube

Abstract

The utility model discloses an automatic plugging device for a heat exchange tube end hole, and relates to the technical field of plugging of the heat exchange tube end hole, the automatic plugging device comprises a first plugging mechanism and a second plugging mechanism, the second plugging mechanism is located on the right side of the first plugging mechanism, and the second plugging mechanism and the first plugging mechanism are symmetrically arranged; the first plugging mechanism and the second plugging mechanism each comprise a mounting plate, a plug feeding box is arranged on each mounting plate, a first air cylinder is arranged on one side of each plug feeding box, and a clamp assembly is arranged on the other side of each plug feeding box. Through the arrangement of the first plugging mechanism and the second plugging mechanism, the first plugging mechanism and the second plugging mechanism can automatically plug the end holes in the two ends of the heat exchange tube, the operation is fast, convenient and labor-saving, and meanwhile the plugging quality is high.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger tube end hole plugging technology, specifically to an automated heat exchanger tube end hole plugging device. Background Technology

[0002] The quality of the weld seams and the overall base material of heat exchanger tubes plays a decisive role in the heat exchange efficiency, service life, and safety and reliability of the tubes. Currently, the main non-destructive testing methods for inspecting titanium and titanium alloy welded heat exchanger tubes include ultrasonic testing, eddy current testing, air pressure testing, hydrostatic testing, and radiographic testing.

[0003] When using the water immersion ultrasonic testing method to inspect heat exchanger tubes, a longitudinal wave probe is used. This wave is refracted into a transverse wave for testing. The tube and probe are placed together in a water tank. For the longitudinal wave, the probe is perpendicular to the tube wall surface and maintained at a certain distance, using water as a coupling agent. To ensure the accuracy of ultrasonic testing and prevent water from entering the heat exchanger tube, both ends of the tube need to be sealed. Currently, conical rubber plugs are used to seal both ends of the heat exchanger tube. These plugs are manually inserted one by one, which is time-consuming and labor-intensive, significantly reducing the efficiency of ultrasonic testing. Utility Model Content

[0004] The purpose of this invention is to provide an automated plugging device for the end holes of heat exchange tubes to address the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automated plugging device for heat exchanger tube end holes, comprising:

[0006] A first blocking mechanism and a second blocking mechanism, wherein the second blocking mechanism is located to the right of the first blocking mechanism and is symmetrically arranged with respect to the first blocking mechanism;

[0007] The first sealing mechanism has a first base at its bottom, and the second sealing mechanism has a second base at its bottom. Two parallel limiting rods are fixed on the side of the second base near the first base, and the limiting rods are slidably nested inside the first base.

[0008] Both the first and second sealing mechanisms include a mounting plate, on which a plug feeding box is provided. A first cylinder is provided on one side of the plug feeding box, and a clamping assembly is provided on the other side of the plug feeding box.

[0009] Preferably, the plug feeding box has a storage cavity, a push port is provided at the bottom of the plug feeding box on the side near the first cylinder, and a discharge port is provided at the bottom of the plug feeding box on the side away from the first cylinder. Both the discharge port and the push port are connected to the storage cavity, and the diameter of the discharge port is the same as the diameter of the push port.

[0010] The output end of the first cylinder is connected to a push plate, the diameter of which is smaller than the diameter of the push port, and the central axis of the first cylinder coincides with the central axis of the discharge port and the push port.

[0011] Preferably, a guide sleeve is installed at the port of the discharge port. The diameter of the channel of the guide sleeve gradually decreases in the direction away from the discharge port. The guide sleeve is aligned with the end of the heat exchange tube, so that the plug can be smoothly inserted into the end hole of the heat exchange tube.

[0012] Preferably, the mounting plate has a sliding groove, and a rectangular rod is fixed in the sliding groove;

[0013] The clamping assembly includes a second cylinder, a gear, and two clamping wheels. The two clamping wheels are arranged vertically. Sliding sleeves are fixed to the side of the two clamping wheels near the rectangular rod. The sliding sleeves are slidably fitted onto the rectangular rod. The gear is rotatably mounted on the middle of the rear side of the rectangular rod. Racks are meshed on the left and right sides of the gear. The two racks are respectively connected to the corresponding sliding sleeves. A support is mounted on the bottom rear side of the mounting plate. The cylinder body of the second cylinder is mounted on the support. A push plate is connected to the output end of the second cylinder. The push plate is connected to the rear side of the lower sliding sleeve. The end of the heat exchange tube is placed on the lower clamping wheel. Then, the second cylinder works to push the lower sliding sleeve to move upward. The upward movement of the sliding sleeve drives the lower clamping wheel to move upward. At the same time, the upward movement of the sliding sleeve, under the action of the gear and rack, drives the upper sliding sleeve to move downward synchronously, thereby clamping and fixing the end of the heat exchange tube. This ensures that the centerline height of heat exchange tubes of different diameters is the same after fixing.

[0014] The center of the line connecting the two clamping wheel centers is on the same straight line as the central axis of the first cylinder, so that the first cylinder and the heat exchange tube are kept in the same coaxiality.

[0015] Preferably, the first cylinder is installed on the front side of the mounting plate, and a mounting seat is fixed on the front side of the mounting plate corresponding to the position of the plug feeding box. The plug feeding box is connected to the mounting seat by bolts, which is simple and convenient to connect and facilitates the replacement of the plug feeding box in the future.

[0016] Preferably, a slide rail is provided on the side of the first base near the second base corresponding to the positions of the two limiting rods. The end of the limiting rod away from the second base is nested in the slide rail. A locking knob is threadedly nested on the upper side of the first base corresponding to the position of the slide rail port. The inner end of the locking knob abuts against the surface of the limiting rod. Loosening the locking knob releases the locking of the limiting rod, thereby facilitating the adjustment of the distance between the first base and the second base. Tightening the locking knob fixes the limiting rod, making the connection between the first base and the second base stable.

[0017] Preferably, a controller is installed on the mounting plate on the first sealing mechanism. The controller is electrically connected to the first cylinder and the second cylinder, and controls the first cylinder and the second cylinder to work.

[0018] Preferably, both the first base and the second base are provided with movable feet at their bottoms, which facilitates the movement of the first base and the second base and makes it easy to adjust the distance between the first base and the second base, thereby facilitating the adjustment of the distance between the first sealing mechanism and the second sealing mechanism, and making it easy to fix and plug heat exchange tubes of different lengths.

[0019] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0020] 1. By setting up a first sealing mechanism and a second sealing mechanism, the first sealing mechanism and the second sealing mechanism can automatically block the end holes at both ends of the heat exchange tube, which is quick, convenient and labor-saving, and at the same time the sealing quality is high;

[0021] 2. By setting a limit rod, slide, and locking knob, turning the locking knob releases the lock on the limit rod, thereby facilitating the adjustment of the distance between the first base and the second base, and thus facilitating the adjustment of the distance between the first sealing mechanism and the second sealing mechanism, and facilitating the fixed plugging of heat exchange tubes of different lengths.

[0022] 3. With the clamping assembly, the heat exchange tube ends can be effectively clamped and fixed, and the centerline height of heat exchange tubes of different diameters is the same after fixing. The feeding box is easy to install and can be disassembled and replaced as needed. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is another schematic diagram of the present invention;

[0026] Figure 3 This is a schematic diagram showing the connection between the first base and the first sealing mechanism of this utility model;

[0027] Figure 4 This is an anatomical diagram showing the connection between the feeding box and the first cylinder of this utility model.

[0028] Figure 5 This is a schematic diagram of the fixture assembly structure of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. First base; 2. Second base; 3. Limiting rod; 4. Mounting plate; 5. Plug feed box; 6. First cylinder; 7. Storage chamber; 8. Push port; 9. Discharge port; 10. Push plate; 11. Guide sleeve; 12. Slide groove; 13. Rectangular rod; 14. Second cylinder; 15. Gear; 16. Clamping wheel; 17. Sliding sleeve; 18. Rack; 19. Support; 20. Push plate; 21. Mounting base; 22. Slide rail; 23. Locking knob; 24. Controller; 25. Movable support leg. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0032] This utility model provides, for example Figures 1 to 5 An automated plugging device for heat exchanger tube end holes, as shown, includes:

[0033] The first blocking mechanism and the second blocking mechanism are located to the right of the first blocking mechanism and are symmetrically arranged.

[0034] Both the first and second sealing mechanisms include a mounting plate 4, on which a plug feeding box 5 is provided. A first cylinder 6 is provided on one side of the plug feeding box 5, and a clamping assembly is provided on the other side of the plug feeding box 5.

[0035] The plug feeding box 5 has a storage cavity 7. The bottom of the plug feeding box 5 near the first cylinder 6 has a push port 8. The bottom of the plug feeding box 5 away from the first cylinder 6 has a discharge port 9. Both the discharge port 9 and the push port 8 are connected to the storage cavity 7. The diameter of the discharge port 9 is the same as the diameter of the push port 8.

[0036] The output end of the first cylinder 6 is connected to a push plate 10. The diameter of the push plate 10 is smaller than the diameter of the push port 8. The central axis of the first cylinder 6 coincides with the central axis of the discharge port 9 and the push port 8.

[0037] A guide sleeve 11 is installed at the port of discharge port 9. The diameter of the channel of the guide sleeve 11 gradually decreases in the direction away from discharge port 9. The guide sleeve 11 is aligned with the end of the heat exchange tube, so that the plug can be smoothly inserted into the end hole of the heat exchange tube.

[0038] A sliding groove 12 is provided on the mounting plate 4, and a rectangular rod 13 is fixed in the sliding groove 12;

[0039] The clamping assembly includes a second cylinder 14, a gear 15, and two clamping wheels 16, arranged vertically. Sliding sleeves 17 are fixed to one side of each clamping wheel 16 near the rectangular rod 13, and the sliding sleeves 17 are slidably fitted onto the rectangular rod 13. The gear 15 is rotatably mounted on the rear middle of the rectangular rod 13. Racks 18 mesh with the left and right sides of the gear 15, and the two racks 18 are respectively connected to the corresponding sliding sleeves 17. A support 19 is mounted on the rear bottom of the mounting plate 4, and the cylinder body of the second cylinder 14 is mounted on the support 19. The output end is connected to a push plate 20, which is connected to the rear side of the lower sliding sleeve 17. The end of the heat exchange tube is placed on the lower clamping wheel 16. Then, the second cylinder 14 works to push the lower sliding sleeve 17 to move upward. The upward movement of the sliding sleeve 17 drives the lower clamping wheel 16 to move upward. At the same time, the upward movement of the sliding sleeve 17, under the action of the gear 15 and the rack 18, drives the upper sliding sleeve 17 to move downward synchronously, thereby clamping and fixing the end of the heat exchange tube. At the same time, the centerline height position of heat exchange tubes of different diameters is the same after fixing.

[0040] The center of the line connecting the center points of the two clamping rollers 16 is on the same straight line as the central axis of the first cylinder 6, so that the coaxiality of the first cylinder 6 and the heat exchange tube is kept consistent.

[0041] The first cylinder 6 is installed on the front side of the mounting plate 4. The mounting plate 4 has a mounting base 21 fixed on the front side corresponding to the position of the plug feeding box 5. The plug feeding box 5 is connected to the mounting base 21 by bolts. The connection is simple and convenient, and it is also convenient to replace the plug feeding box 5 later.

[0042] A controller 24 is installed on the mounting plate 4 located on the first sealing mechanism. The controller 24 is electrically connected to the first cylinder 6 and the second cylinder 14, and controls the first cylinder 6 and the second cylinder 14 to work.

[0043] In this invention, the two ends of the heat exchange tube are placed on the clamping assemblies of the first and second sealing mechanisms, respectively. The end of the heat exchange tube is placed on the clamping wheel 16 located below on the clamping assembly. The second cylinder 14 works to push the lower sliding sleeve 17 upward. The upward movement of the sliding sleeve 17 drives the lower clamping wheel 16 upward. At the same time, the upward movement of the sliding sleeve 17, under the action of the gear 15 and the rack 18, drives the upper sliding sleeve 17 to move downward synchronously, so that the two clamping wheels 16 clamp and fix the end of the heat exchange tube. At the same time, it can also make the axis height position of heat exchange tubes of different diameters the same after fixing. Then, the first cylinder 6 works to drive the push plate 10 to move. The push plate 10 enters the storage chamber 7 through the push port 8, pushes the plug at the bottom of the storage chamber 7, discharges the plug from the discharge port 9, and inserts it into the end hole of the heat exchange tube through the guide sleeve 11 to plug the end hole of the heat exchange tube. It is quick, convenient and labor-saving, and the plugging quality is high.

[0044] like Figure 1 and Figure 3 As shown, the bottom of the first sealing mechanism is provided with a first base 1, and the bottom of the second sealing mechanism is provided with a second base 2. Two parallel limiting rods 3 are fixed on the side of the second base 2 near the first base 1, and the limiting rods 3 are slidably nested in the first base 1.

[0045] On the side of the first base 1 closest to the second base 2, a slide rail 22 is provided at the position of each of the two limiting rods 3. The end of the limiting rod 3 away from the second base 2 is nested in the slide rail 22. A locking knob 23 is threadedly nested on the upper side of the first base 1 at the position of the end of the slide rail 22. The inner end of the locking knob 23 abuts against the surface of the limiting rod 3. Loosening the locking knob 23 releases the locking of the limiting rod 3, thereby facilitating the adjustment of the distance between the first base 1 and the second base 2. Tightening the locking knob 23 fixes the limiting rod 3, making the connection between the first base 1 and the second base 2 stable.

[0046] The bottom of both the first base 1 and the second base 2 is provided with movable support feet 25, which facilitates the movement of the first base 1 and the second base 2 and makes it easy to adjust the distance between the first base 1 and the second base 2, thereby facilitating the adjustment of the distance between the first sealing mechanism and the second sealing mechanism, and making it easy to fix and plug heat exchange tubes of different lengths.

[0047] In this utility model, turning the locking knob 23 releases the lock on the limiting rod 3, and then pulling the first base 1 or the second base 2 moves the first base 1 and the second base 2 to adjust the distance between the first base 1 and the second base 2, thereby facilitating the adjustment of the distance between the first sealing mechanism and the second sealing mechanism, and facilitating the fixing and plugging of heat exchange tubes of different lengths. Turning the locking knob 23 tightens the limiting rod 3 to fix it, so that the connection between the first base 1 and the second base 2 is stable.

[0048] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automated plugging device for the end holes of heat exchanger tubes, characterized in that, include: A first blocking mechanism and a second blocking mechanism, wherein the second blocking mechanism is located to the right of the first blocking mechanism and is symmetrically arranged with respect to the first blocking mechanism; The first sealing mechanism is provided with a first base (1) at the bottom, and the second sealing mechanism is provided with a second base (2) at the bottom. Two parallel limiting rods (3) are fixed on the side of the second base (2) near the first base (1). The limiting rods (3) are slidably nested in the first base (1). Both the first sealing mechanism and the second sealing mechanism include a mounting plate (4), on which a plug feeding box (5) is provided. A first cylinder (6) is provided on one side of the plug feeding box (5), and a clamping assembly is provided on the other side of the plug feeding box (5).

2. The automated plugging device for heat exchanger tube end holes according to claim 1, characterized in that: The plug feeding box (5) has a storage cavity (7) inside. The bottom of the plug feeding box (5) near the first cylinder (6) has a push port (8) and the bottom of the plug feeding box (5) away from the first cylinder (6) has a discharge port (9). The discharge port (9) and the push port (8) are both connected to the storage cavity (7). The diameter of the discharge port (9) is the same as the diameter of the push port (8). The output end of the first cylinder (6) is connected to a push plate (10), the diameter of which is smaller than the diameter of the push port (8), and the central axis of the first cylinder (6) coincides with the central axis of the discharge port (9) and the push port (8).

3. The automated plugging device for heat exchanger tube end holes according to claim 2, characterized in that: The discharge port (9) is equipped with a guide sleeve (11), and the channel diameter of the guide sleeve (11) gradually decreases in the direction away from the discharge port (9).

4. The automated plugging device for heat exchanger tube end holes according to claim 1, characterized in that: The mounting plate (4) is provided with a sliding groove (12), and a rectangular rod (13) is fixed in the sliding groove (12); The clamping assembly includes a second cylinder (14), a gear (15), and two clamping wheels (16). The two clamping wheels (16) are arranged vertically. A sliding sleeve (17) is fixed on one side of the two clamping wheels (16) near the rectangular rod (13). The sliding sleeve (17) is slidably sleeved on the rectangular rod (13). The gear (15) is rotatably mounted on the middle of the rear side of the rectangular rod (13). Racks (18) are respectively meshed on the left and right sides of the gear (15). The two racks (18) are respectively connected to the corresponding sliding sleeves (17). A support (19) is installed on the bottom rear side of the mounting plate (4). The cylinder body of the second cylinder (14) is mounted on the support (19). A push plate (20) is connected to the output end of the second cylinder (14). The push plate (20) is connected to the rear side of the sliding sleeve (17) located below. The center of the line connecting the center points of the two clamping wheels (16) is on the same straight line as the central axis of the first cylinder (6).

5. The automated plugging device for heat exchanger tube end holes according to claim 1, characterized in that: The first cylinder (6) is installed on the front side of the mounting plate (4). The front side of the mounting plate (4) is fixed with a mounting seat (21) corresponding to the position of the plug feeding box (5). The plug feeding box (5) is connected to the mounting seat (21) by bolts.

6. The automated plugging device for heat exchanger tube end holes according to claim 1, characterized in that: The first base (1) has a slide rail (22) on the side near the second base (2) corresponding to the position of the two limiting rods (3). The end of the limiting rod (3) away from the second base (2) is nested in the slide rail (22). A locking knob (23) is threadedly nested on the upper side of the first base (1) corresponding to the position of the slide rail (22). The inner end of the locking knob (23) abuts against the surface of the limiting rod (3).

7. The automated plugging device for heat exchanger tube end holes according to claim 4, characterized in that: A controller (24) is installed on the mounting plate (4) located on the first sealing mechanism. The controller (24) is electrically connected to the first cylinder (6) and the second cylinder (14).

8. The automated plugging device for heat exchanger tube end holes according to claim 1, characterized in that: The bottom of the first base (1) and the second base (2) are both provided with movable support feet (25).

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