A tube-threading device for tube sheet

Abstract

The present invention relates to the field of tube bundle equipment, and more specifically, to a tube sheet threading device, comprising: a loading device, the loading device comprising an obliquely arranged placement table for placing the tube bundle, the lower end of the placement table being provided with a tube trough, one end of which is fixedly connected to a pushing device for pushing the tube bundle in the trough to the next station; a tube bundle pushing device, the tube bundle pushing device being provided with a slider A, the slider A being equipped with a pneumatic clamp for clamping the tube bundle to be threaded and delivering it to the next station; and a plate fixing seat, the plate fixing seat being provided with a plurality of tube sheet mounting slots along its length. The main purpose of the present invention is to provide a tube sheet threading device that can facilitate and quickly thread the tube bundle onto the tube sheet, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to the field of tube bundle equipment, and in particular to a tube penetration device for a tube sheet. Background Art

[0002] At present, there are many types of equipment in the chemical industry that contain tube bundles. Without exception, the tube bundle is one of the most core components of these equipment.

[0003] However, currently, the pipe threading of chemical equipment mainly adopts the manual individual pipe threading method, which first passes the individual pipes through the tube sheet with the pipe holes opened in sequence, and then welds them.

[0004] Since some tube sheets have large diameters, many tube bundle workers are still unable to thread the tubes after lifting them. Therefore, the tube sheet mounting base must be set to a rotatable mode. Since the tube threading equipment needs to add a rotating device, the equipment is large and expensive. In addition, manual operation is prone to errors, which can cause injuries to workers. In order to prevent problems from occurring during the rotation of the pipes after threading, the tube bundle and the tube sheet must be welded in time. Basically, a single pipe threading and single welding method is adopted. During this process, the equipment must be continuously rotated to punch holes. The project is large in workload and inefficient, which greatly affects production efficiency. Summary of the Invention

[0005] The main purpose of the present invention is to provide a tube-piercing device for a tube sheet, which can realize convenient and quick tube-piercing of a tube bundle on the tube sheet, thereby improving work efficiency.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A tube-piercing device for a tube sheet, comprising:

[0008] A loading device, comprising a placement table arranged obliquely for placing the tube bundle, a tube trough being provided at the lower end of the placement table, and a pushing device fixedly connected to one end of the tube trough for pushing the tube bundle in the tube trough to the next station;

[0009] A tube bundle pushing device, which is provided with a slider A, and the slider A is equipped with a pneumatic clamp for clamping the tube bundle to be threaded and sending it to the next station;

[0010] A plate fixing seat, wherein the plate fixing seat is provided with a plurality of tube sheet mounting grooves along the length direction;

[0011] The pipeline traction device is provided with a slider B, to which a traction rod arranged toward the plate fixing seat is fixedly connected, and an inflatable shaft for inserting into the pipe bundle is provided at the end of the traction rod;

[0012] Among them, the feeding device, the tube bundle pushing device, the plate fixing seat, and the pipeline pulling device are sequentially arranged along the production line.

[0013] Furthermore, a baffle is provided between the lower end of the placement table and the pipe groove, a propulsion mechanism is fixedly connected to the bottom of the placement table, the propulsion mechanism includes a pushing cylinder, a U-shaped bracket is fixedly connected to the guide rod of the pushing cylinder, a notch is provided on the placement table for the U-shaped bracket to extend out, the distance between the U-shaped bracket and the baffle is smaller than the diameter of the tube bundle to be installed, and the U-shaped bracket can pass through the notch to push the tube bundle over the baffle and into the pipe groove.

[0014] Furthermore, the free end of the U-shaped bracket is inclined in the same direction as the placement table.

[0015] Furthermore, the tube bundle pushing device includes a base A, a guide rail A is provided on the upper surface of the base A along the length direction, a pushing rack A is movably connected to the guide rail A, and the pushing rack A includes a frame A. The bottom of the frame A is movably connected to the guide rail A. Two groups of screw modules A are vertically provided in the frame A. A screw module B is fixedly connected between the guide blocks A of the two groups of the screw modules A, and the slider A is fixedly connected to the guide block B of the screw module B.

[0016] Furthermore, two pushing racks A are provided, and the lower parts thereof are movably connected to the base A through two screw modules respectively.

[0017] Furthermore, the guide rail A is a wedge-shaped structure, and a matching sliding groove is provided at the bottom of the frame A.

[0018] Furthermore, the pipeline traction device includes a base B and a traction frame A. A guide rail B is provided on the upper surface of the base B along the length direction. The traction frame A is movably connected to the guide rail B. Two groups of screw modules C are vertically provided in the traction frame A. A screw module D is fixedly connected between the guide blocks C of the two groups of screw modules C. The slider B is fixedly connected to the guide block D of the screw module D.

[0019] Furthermore, the pipeline traction device also includes a traction frame B, in which two groups of screw modules E are vertically arranged, and a screw module F is fixedly connected between the guide blocks E of the two groups of screw modules E. A support block is fixedly connected to the guide block F of the screw module F, and the support block is provided with a guide hole for the traction rod to pass through.

[0020] Furthermore, the guide rail B is a wedge-shaped structure, and the bottom of the traction frame A and the traction frame B are provided with matching sliding grooves, and the lower parts of the traction frame A and the traction frame B are movably connected to the base B through two screw modules.

[0021] Furthermore, a plurality of limiting pins are provided on both sides of the tube plate mounting groove.

[0022] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0023] 1. This patent realizes automatic loading through a loading device, and then uses a tube bundle pushing device to move the tube bundle and insert it into the tube sheet on the plate fixing seat. A pipe traction device is set at the rear end of the plate fixing seat, and the position of the traction rod is adjusted to align the tube bundle to be pulled. An air shaft is set at the front end of the traction rod, and the air shaft is inserted into the tube bundle. After the air shaft is started, the tube bundle is pulled by the pipe traction device, which is convenient and fast, and improves production efficiency.

[0024] Second, by setting a baffle between the lower end of the placement table and the pipe groove, the tube bundle is lifted up by the propulsion mechanism and automatically rolled into the pipe groove, and then pushed to the next workstation.

[0025] 3. In order to facilitate the tube bundle to roll into the tube groove, the free end of the U-shaped bracket is inclined in the same direction as the placement table.

[0026] Fourth, two pushing racks A are set up to clamp and push the tube bundle to ensure the stability of the tube bundle during displacement.

[0027] 5. By setting multiple screw modules on the traction frame A to control the slider B, the position can be adjusted as needed to meet the use requirements.

[0028] 6. By setting up a traction frame B as a support for the traction rod, it can prevent the traction rod from being too long, causing the head to bend and unable to be pulled.

[0029] 7. Set the guide rail B to a wedge-shaped structure to prevent the positions of traction frame A and traction frame B from changing. At the same time, set two sets of screw modules to control traction frame A and traction frame B respectively, so that the position between the two can be effectively changed as needed.

[0030] 8. By setting limit pins on the tube sheet mounting groove, the tube sheet can be effectively fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the patent structure.

[0032] Figure 2 It is a schematic diagram of the feeding device structure.

[0033] Figure 3 This is a structural diagram of the feeding device from another angle.

[0034] Figure 4 This is a schematic diagram of the structure of the tube bundle pushing device.

[0035] Figure 5Schematic diagram of the structure of the tube bundle pushing device from another angle.

[0036] Figure 6 It is a schematic diagram of the plate fixing seat structure.

[0037] Figure 7 This is a schematic diagram of the pipeline traction device structure.

[0038] Figure 8 This is a schematic diagram of the structure of the pipeline traction device from another angle. DETAILED DESCRIPTION

[0039] like Figures 1 to 8 As shown, a tube-threading device for a tube sheet includes a loading device 10, wherein the loading device 10 includes a placement table 101 arranged obliquely for placing a tube bundle, a tube groove 102 being provided at the lower end of the placement table 101, and a pushing device 103 being fixedly connected to one end of the tube groove 102 for pushing the tube bundle in the tube groove 102 to the next station;

[0040] A tube bundle pushing device 20 is provided with a slider A201, and the slider A201 is equipped with a pneumatic clamp 2011 for clamping the tube bundle to be threaded and sending it to the next station;

[0041] A plate fixing seat 30, wherein the plate fixing seat 30 is provided with a plurality of tube sheet mounting grooves 301 along the length direction;

[0042] The pipe pulling device 40 is provided with a slider B401, and the slider B401 is fixedly connected to a pulling rod 4011 arranged toward the plate fixing seat 30. The end of the pulling rod 4011 is provided with an inflatable shaft 4012 for inserting into the pipe bundle;

[0043] The feeding device 10, the tube bundle pushing device 20, the plate fixing seat 30, and the pipe pulling device 40 are sequentially arranged along the production line.

[0044] Furthermore, a baffle 105 is provided between the lower end of the placement platform 101 and the tube groove 102, and a propulsion mechanism 104 is fixedly connected to the bottom of the placement platform 101. The propulsion mechanism 104 includes a pushing cylinder 1042, and a U-shaped bracket 1041 is fixedly connected to the guide rod of the pushing cylinder 1042. A notch is provided on the placement platform 101 for the U-shaped bracket 1041 to extend out. The distance between the U-shaped bracket 1041 and the baffle 105 is smaller than the diameter of the tube bundle to be installed. The U-shaped bracket 1041 can pass through the notch to push the tube bundle over the baffle 105 and into the tube groove 102.

[0045] Furthermore, the free end of the U-shaped bracket 1041 is inclined in the same direction as the placement platform 101 .

[0046] Furthermore, in order to ensure that the tube bundle pushing device 20 can move the tube bundle to the specified position, the tube bundle pushing device 20 includes a base A202, and a guide rail A2021 is provided on the upper surface of the base A202 along the length direction. A pushing rack A2022 is movably connected to the guide rail A2021, and the pushing rack A2022 includes a frame A2023. The bottom of the frame A2023 is movably connected to the guide rail A2021. Two groups of screw modules A20231 are vertically provided in the frame A2023. A screw module B20232 is fixedly connected between the guide blocks A of the two groups of the screw modules A20231, and the slider A201 is fixedly connected to the guide block B of the screw module B20232.

[0047] Furthermore, in order to ensure the stability of the tube bundle displacement and tube threading, two pushing racks A2022 are provided, and their lower parts are movably connected to the base A202 through two screw modules respectively. Each screw module controls a pushing rack A2022, and a screw through hole of another screw module is opened at the lower part of the pushing rack A2022 to avoid affecting the movement of the two pushing racks A2022.

[0048] Furthermore, in order to ensure that the frame A2023 can be displaced stably, the guide rail A2021 is a wedge-shaped structure, and a matching sliding groove is provided at the bottom of the frame A2023.

[0049] Furthermore, the pipeline traction device 40 includes a base B402 and a traction frame A403. A guide rail B4021 is provided on the upper surface of the base B402 along the length direction. The traction frame A403 is movably connected to the guide rail B4021. Two groups of screw modules C4031 are vertically provided in the traction frame A403. A screw module D4032 is fixedly connected between the guide blocks C of the two groups of screw modules C4031. The slider B401 is fixedly connected to the guide block D of the screw module D4032.

[0050] Furthermore, the pipeline traction device 40 also includes a traction frame B404, in which two groups of screw modules E4041 are vertically arranged, and a screw module F4042 is fixedly connected between the guide blocks E of the two groups of screw modules E4041. A support block 4043 is fixedly connected to the guide block F of the screw module F4042, and the support block 4043 is provided with a guide hole 40431 for the traction rod 4011 to pass through.

[0051] Furthermore, the guide rail B4021 is a wedge-shaped structure, and the bottom of the traction frame A403 and the traction frame B404 are provided with matching sliding grooves. The lower parts of the traction frame A403 and the traction frame B404 are movably connected to the base B402 through two screw modules, and the lower parts of the traction frame A403 and the traction frame B404 are respectively provided with holes for the screw of another screw module to pass through.

[0052] Furthermore, in order to ensure that the tube sheet is stable and does not move after installation, a plurality of limiting pins 3011 are provided on both sides of the tube sheet installation groove 301 .

[0053] Furthermore, in order to facilitate the insertion of the traction rod 4011 into the tube bundle, the free end of the traction rod 4011 is rounded, and the pneumatic shaft 4012 is a key-type pneumatic shaft.

[0054] Furthermore, in order to ensure that the inflatable shaft can be pulled more stably, the inflatable key of the inflatable shaft is made of rubber.

[0055] Specifically, when using

[0056] In the first step, the tube bundle is placed on the placement table 101. The tube sheet is then hoisted and placed on the plate fixing seat 30 according to the settings. After all the tube sheets are adjusted, they are fixed using the limit pins 3011. The screw module D4032 is set on one side as the origin. A coordinate system is established, and the holes on the tube sheet are marked using a digital coordinate system, such as (xi, yi, zi), where i is a real number (a digital coordinate system can also be omitted and the position of the tube rod can be manually adjusted according to actual conditions). The pipe pulling device 40 and the tube bundle pushing device 20 are set to the same coordinate system.

[0057] In the second step, the pushing mechanism 104 is controlled to lift a tube bundle and roll it into the tube groove 102. The pushing device 103 (cylinder or screw motor) is then used to push the tube bundle to the tube bundle pushing device 20. The pneumatic clamps 2011 on the two sliders A clamp the tube bundle in front and behind.

[0058] The pneumatic clamp 2011 near the loading device 10 releases its clamp, and the pneumatic clamp 2011 near the plate fixing seat 30 clamps the tube bundle and drives the tube bundle to move. After moving into position, the pneumatic clamp 2011 near the loading device 10 clamps its clamp, and the two sliders A201 simultaneously move to the designated perforation position under the action of the lead screw. The pneumatic clamp 2011 near the plate fixing seat 30 releases its clamp, and the pneumatic clamp 2011 near the loading device 10 drives the tube bundle toward one end of the plate fixing seat 30 and inserts it into the tube sheet.

[0059] In the third step, the servo motor adjusts the position of the traction rod 4011 to align it with the tube bundle to be threaded. The inflatable shaft 4012 is then inserted into the tube bundle. When the inflatable shaft expands, it clamps against the inner wall of the tube bundle. The expanded portion of the inflatable shaft is made of rubber, which not only clamps the tube but also prevents deformation from squeezing the tubes. After clamping, the traction rod 4011 is controlled to return to its original position. Due to friction, the tube bundle follows the movement and is threaded. When it reaches the appropriate position, the inflatable shaft is released, completing the threading. This reciprocating cycle completes the threading of the tube bundle. (The end of the inflatable shaft is provided with an air hole for connection to the air source, not shown in this figure. The screw module uses a CNC servo motor. Programming enables the device to operate automatically, replacing traditional manual threading, greatly reducing human involvement. The specific programming method is prior art and will not be described in detail in this patent.)

[0060] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A tube-piercing device for a tube sheet, characterized in that: include, A loading device (10), the loading device (10) comprising a placement table (101) arranged obliquely for placing a tube bundle, a tube trough (102) being provided at the lower end of the placement table (101), and a pushing device (103) being fixedly connected to one end of the tube trough (102) for pushing the tube bundle in the tube trough (102) to the next station; A tube bundle pushing device (20), wherein the tube bundle pushing device (20) is provided with a slider A (201), and the slider A (201) is equipped with a pneumatic clamp (211) for clamping the tube bundle to be threaded and sending it to the next station; A plate fixing seat (30), wherein the plate fixing seat (30) is provided with a tube plate mounting groove (301) along the length direction; The pipeline traction device (40) is provided with a slider B (401), the slider B (401) is fixedly connected to a traction rod (4011) arranged toward the plate fixing seat (30), and the end of the traction rod (4011) is provided with an inflatable shaft (4012) for inserting into the interior of the tube bundle. The pipeline traction device (40) includes a base B (402) and a traction frame A (403). The upper surface of the base B (402) is provided with a guide rail B (4021) along the length direction. The traction frame A (403) is movably connected to the guide rail B (4021). Two sets of screw modules C (4031) are vertically provided in the traction frame A (403). The two sets A screw module D (4032) is fixedly connected between the guide blocks C of the screw module C (4031), the slider B (401) is fixedly connected to the guide block D of the screw module D (4032), the pipeline traction device (40) further comprises a traction frame B (404), two groups of screw modules E (4041) are vertically arranged in the traction frame B (404), a screw module F (4042) is fixedly connected between the guide blocks E of the two groups of screw modules E (4041), a support block (4043) is fixedly connected to the guide block F of the screw module F (4042), and a guide hole (40431) is provided on the support block (4043) for the traction rod (4011) to pass through. Wherein, the loading device (10), the tube bundle pushing device (20), the plate fixing seat (30), and the pipe pulling device (40) are sequentially arranged along the production line.

2. A tube-piercing device for a tube sheet according to claim 1, characterized in that: A baffle (105) is provided between the lower end of the placement platform (101) and the tube groove (102); a propulsion mechanism (104) is fixedly connected below the placement platform (101); the propulsion mechanism (104) comprises a propulsion cylinder (1042); a U-shaped bracket (1041) is fixedly connected to a guide rod of the propulsion cylinder (1042); a notch is provided on the placement platform (101) for the U-shaped bracket (1041) to extend out; the distance between the U-shaped bracket (1041) and the baffle (105) is smaller than the diameter of the tube bundle to be installed; the U-shaped bracket (1041) passes through the notch to push the tube bundle over the baffle (105) and into the tube groove (102).

3. A tube-piercing device for a tube sheet according to claim 2, characterized in that: The free end of the U-shaped bracket (1041) is inclined in the same direction as the placement platform (101).

4. The tube-piercing device for tube sheets according to claim 1, characterized in that: The tube bundle pushing device (20) comprises a base A (202); a guide rail A (2021) is provided on the upper surface of the base A (202) along the length direction; a pushing frame A (2022) is movably connected to the guide rail A (2021); the pushing frame A (2022) comprises a frame A (2023); the bottom of the frame A (2023) is movably connected to the guide rail A (2021); two groups of screw modules A (20231) are vertically provided in the frame A (2023); a screw module B (20232) is fixedly connected between the guide blocks A of the two groups of the screw modules A (20231); and the slider A (201) is fixedly connected to the guide block B of the screw module B (20232).

5. The tube-piercing device for tube sheets according to claim 4, characterized in that: The pushing racks A (2022) are provided with two, and the lower parts thereof are movably connected to the base A (202) via two screw modules.

6. A tube-piercing device for a tube sheet according to claim 4 or 5, characterized in that: The guide rail A (2021) is a wedge-shaped structure, and a matching sliding groove is provided at the bottom of the frame A (2023).

7. The tube-piercing device for tube sheets according to claim 1, characterized in that: The guide rail B (4021) is a wedge-shaped structure, and the bottoms of the traction frame A (403) and the traction frame B (404) are provided with matching sliding grooves, and the lower parts of the traction frame A (403) and the traction frame B (404) are movably connected to the base B (402) through two screw modules.

8. The tube-piercing device for tube sheets according to claim 1, characterized in that: A plurality of groups of limiting pins (3011) are provided in the tube plate mounting groove (301).

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