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CN-117840950-B - Tube drawing device of heat exchanger

CN117840950BCN 117840950 BCN117840950 BCN 117840950BCN-117840950-B

Abstract

The application relates to a tube drawing device of a heat exchanger, which relates to the technical field of heat exchanger equipment, and comprises a bracket, a first fixing component and a driving component; the support is provided with a locating column and a rotating rod, the locating column is connected with the support and used for locating the support, the rotating rod is connected with the support, the first fixing component is arranged on the rotating rod and used for fixing the rotating rod and the tube array, the driving component is arranged on the support and used for driving the rotating rod to slide in a direction away from the tube plate. The application can improve the convenience of tube drawing of the heat exchanger.

Inventors

  • QI KUO
  • ZHANG YUANYUAN
  • ZHANG BAO
  • REN KAI
  • ZHANG DENGFENG
  • NIU TIANJIAN
  • Jing Mengxiang
  • GUO YUXI

Assignees

  • 山西丰喜化工设备有限公司

Dates

Publication Date
20260505
Application Date
20240227

Claims (6)

  1. 1. A tube drawing device of a heat exchanger is characterized by comprising a support (1), a first fixing component (2) and a driving component (3), wherein a positioning column (11) and a rotating rod (12) are arranged on the support (1), the positioning column (11) is connected with the support (1), the positioning column (11) is used for positioning the support (1), the rotating rod (12) is connected with the support (1), the first fixing component (2) is arranged on the rotating rod (12), the first fixing component (2) is used for fixing the rotating rod (12) with a tube array, the driving component (3) is arranged on the support (1), and the driving component (3) is used for driving the rotating rod (12) to slide in a direction far away from a tube plate; The driving assembly (3) comprises a planet carrier (32), a sun gear (31), planet gears (33) and a motor (34); the planet carrier (32) is fixedly arranged on the support (1); the sun gear (31) is rotatably arranged on the planet carrier (32), the positioning column (11) is fixedly connected with the sun gear (31) in a coaxial way; the planet wheels (33) are provided with at least one, the planet wheel (33) is rotationally connected with the planet carrier (32), the planet wheels (33) are meshed with the sun wheel (31); the motor (34) is fixedly connected with the planet carrier (32), the motor (34) is used for driving the sun gear (31) to rotate; screw holes are coaxially formed in the planet gears (33); the rotating rod (12) is provided with at least one, the rotating rods (12) are in one-to-one correspondence with the planetary gears (33), the rotating rod (12) is provided with external threads, the rotating rod (12) is inserted into the threaded hole, the rotating rod (12) is in threaded connection with the planet wheel (33), and the axis of the rotating rod is parallel to the axis of the locating column (11); a first limiting component (4) is arranged on the bracket (1), the first limiting assembly (4) is used for limiting the rotating rod (12); The first fixing assembly (2) is provided with at least one group and corresponds to the rotating rods (12) one by one, the first fixing assembly (2) comprises a mounting rod (21), a rotary table (22) and clamping blocks (23), the mounting rod (21) is coaxially and rotatably connected with the rotating rods (12), the rotary table (22) is coaxially and rotatably connected with the mounting rod (21), planar threads are arranged on the rotary table (22), the rotary table (22) is fixedly connected with the rotating rods (12), three clamping blocks (23) are arranged along the circumferential direction of the mounting rod (21), the clamping blocks (23) are slidably connected with the mounting rod (21), planar threads are arranged on the clamping blocks (23), the planar threads on the rotary table (23) are meshed with the planar threads on the rotary table (22), a second limiting assembly (5) is arranged on the support (1), the second limiting assembly (5) is used for limiting the mounting rod (21), three clamping blocks (23) are arranged on the support (1), and the second fixing assembly (6) is used for fixing the rotating rods (12).
  2. 2. The tube drawing device of the heat exchanger according to claim 1, wherein the first limiting component (4) comprises an adjusting plate (41), an adjusting block (42) and a first spring (43), the adjusting plate (41) is in sliding connection with the support (1), at least one through hole (411) is formed in the adjusting plate (41) and corresponds to the rotating rods (12) one by one, the rotating rods (12) are inserted into the through holes (411), at least one first fixing groove (412) is formed in the adjusting plate (41) and corresponds to the rotating rods (12) one by one, the first fixing groove (412) is communicated with the through holes (411), at least one adjusting block (42) is arranged and corresponds to the rotating rods (12) one by one, one end of the adjusting block (42) is arranged in the first fixing groove (412) in a sliding mode, at least one first spring (43) is arranged and corresponds to the rotating rods (12) one by one, and the first spring (43) is arranged in the first fixing groove (412) and corresponds to the first limiting block (121) one end of the adjusting block (42) and is arranged in the first limiting block (41) and corresponds to the first limiting block (121).
  3. 3. The tube drawing device of the heat exchanger of claim 1, wherein the second limiting assemblies (5) are provided with at least one group and are in one-to-one correspondence with the rotating rods (12), the second limiting assemblies (5) comprise limiting blocks (51) and limiting plates (52), the limiting blocks (51) are fixedly connected with the support (1), second limiting grooves (511) are formed in the limiting blocks (51), the limiting plates (52) are fixedly connected with the mounting rods (21), and the limiting plates (52) are located in the second limiting grooves (511) and are in sliding connection with the limiting blocks (51).
  4. 4. The tube drawing device of the heat exchanger according to claim 1, wherein the planet wheels (33) are provided with second fixing grooves (331), the second fixing assemblies (6) are provided with at least one group and correspond to the rotating rods (12) one by one, the second fixing assemblies (6) comprise first magnetic blocks (61) and second springs (62), the first magnetic blocks (61) are arranged in the second fixing grooves (331) in a sliding mode, the second springs (62) are located in the second fixing grooves (331), two ends of the second springs are fixedly connected with the first magnetic blocks (61) and the planet wheels (33) respectively, and the support (1) is provided with adjusting assemblies (7) used for adjusting positions of the first magnetic blocks (61).
  5. 5. The tube drawing device for the heat exchanger according to claim 4, wherein the adjusting assembly (7) comprises an elastic piece (71), a telescopic rod (72), a second magnetic block (73) and a third spring (74), wherein the elastic piece (71) is fixedly arranged on the support (1), the elastic piece (71) is of a cavity structure, at least one of the telescopic rod (72), the second magnetic block (73) and the third spring (74) is arranged and corresponds to the rotating rod (12), the fixed end of the telescopic rod (72) is fixedly connected with the support (1), the second magnetic block (73) is fixedly arranged at the movable end of the telescopic rod (72), the second magnetic block (73) and the first magnetic block (61) are opposite in magnetism, the fixed end of the telescopic rod (72) is divided into a rod cavity (721) and a rodless cavity (722), the third spring (74) is fixedly arranged in the rod cavity (721) and the hollow rod (722), and the movable end of the second magnetic block (73) is fixedly arranged in the movable end of the telescopic rod (72), and the hollow rod (721) is communicated with the liquid inside the elastic piece (722).
  6. 6. A tube drawing apparatus for a heat exchanger according to claim 2, wherein an end face of the regulating block (42) near the rotating rod (12) gradually increases in distance from the rotating rod (12) in a direction away from the carrier (32).

Description

Tube drawing device of heat exchanger Technical Field The application relates to the technical field of heat exchanger equipment, in particular to a tube drawing device of a heat exchanger. Background Shell-and-tube heat exchangers are also known as shell-and-tube heat exchangers. Is a dividing wall type heat exchanger taking the wall surface of a tube bundle enclosed in a shell as a heat transfer surface. When the tube array of the shell-and-tube heat exchanger is used for a long time, damage such as cracking, leakage and the like often occurs, and the tube array needs to be pulled out of a tube plate for maintenance and replacement through tube pulling equipment. The existing tube drawing equipment comprises an expansion tube and a threaded rod, wherein the expansion tube is fixedly arranged at one end of the threaded rod, when the tube drawing equipment is used, an operator stretches one end provided with the expansion tube into a tube array, then the expansion tube is expanded with the tube array through an expansion structure of the expansion tube, and the threaded rod is pulled to pull out the expansion tube and the tube array from a tube plate for overhauling and replacement. When the tube drawing equipment of the heat exchanger is used, because operators are difficult to ensure that the pulling force is parallel to the axis of the tube array when pulling the threaded rod, the tube array can scratch the tube plate when being pulled to slide relative to the tube plate, and in order to avoid the situation, the operators need to carefully, and the convenience of tube drawing of the heat exchanger is greatly reduced. Disclosure of Invention In order to improve convenience of tube drawing of a heat exchanger, the application provides a tube drawing device of the heat exchanger. The application provides a tube drawing device of a heat exchanger, which adopts the following technical scheme: The tube drawing device of the heat exchanger comprises a support, a first fixing component and a driving component, wherein a locating column and a rotating rod are arranged on the support, the locating column is connected with the support and used for locating the support, the rotating rod is connected with the support, the first fixing component is arranged on the rotating rod and used for fixing the rotating rod and the tube array, the driving component is arranged on the support, and the driving component is used for driving the rotating rod to slide in a direction far away from a tube plate. Through adopting above-mentioned technical scheme, when carrying out the tube drawing to the heat exchanger, operating personnel inserts the reference column in a tubulation, and the bull stick inserts to waiting to extract in the tubulation simultaneously, then will wait to extract tubulation and bull stick to fix through first fixed subassembly, drives the bull stick through drive assembly and drives the tubulation and slide to the direction of keeping away from the tube sheet at last to extract the tubulation. The support is positioned through the positioning column, so that the axis of the rotating rod is always parallel to the axis of the tube array in the tube array pulling process, the tube plate is prevented from being scratched due to the fact that the force is stressed to incline in the tube array pulling process, and the convenience of tube array pulling of the heat exchanger is improved. The driving assembly comprises a planet carrier, a sun gear, a planet wheel and a motor, wherein the planet carrier is fixedly arranged on the support, the sun gear is rotatably arranged on the planet carrier, the positioning column is coaxially and fixedly connected with the sun gear, at least one planet wheel is arranged on the planet wheel and is rotatably connected with the planet carrier, the planet wheel is meshed with the sun gear, the motor is fixedly connected with the planet carrier, the motor is used for driving the sun gear to rotate, threaded holes are coaxially formed in the planet wheel, at least one rotating rod is arranged, the rotating rods are in one-to-one correspondence with the planet wheels, external threads are arranged on the rotating rods, the rotating rods are inserted into the threaded holes and are in threaded connection with the planet wheels, the axis of the rotating rods is parallel to the axis of the positioning column, and a first limiting assembly is arranged on the support and used for limiting the rotating rods. Through adopting above-mentioned technical scheme, when carrying out the tube drawing to the heat exchanger, carry out spacingly to the bull stick through first spacing subassembly for bull stick and support frame can only slide, and can not carry out relative rotation. When the tube array is pulled out, an operator starts a motor, the motor drives a sun wheel to rotate, a planet wheel is driven to rotate, under the action of threads between the planet wheel and a rotating rod, the rotati