Search

CN-224208989-U - Tube expanding device for sealing heat exchange tube and tube plate

CN224208989UCN 224208989 UCN224208989 UCN 224208989UCN-224208989-U

Abstract

Tube expansion device for sealing heat exchange tube and tube plate. Relates to the field of heat exchanger production equipment. The hydraulic expansion device comprises a gun-shaped shell, an installation rod is arranged at the transverse end of the shell, a hydraulic expansion head is screwed at the end part of the installation rod, the hydraulic expansion head further comprises an operation platform, the operation platform comprises a platen and a sliding plate, the platen is connected with the sliding plate through the hydraulic rod, a dovetail groove is formed in the top of the platen, a bearing block is adaptively arranged in the dovetail groove, a jack is formed in the top of the bearing block, the vertical end of the shell is inserted into the jack, and universal wheels are arranged at four corners of the bottom of the sliding plate. According to the application, the physical consumption of operators can be reduced, the butting difficulty can be reduced, and the expansion joint efficiency can be effectively improved.

Inventors

  • ZHOU JIANLING
  • CHU KAI
  • FAN CHUNJUN
  • ZHANG ZHOUFENG

Assignees

  • 江苏竣业过程机械设备有限公司

Dates

Publication Date
20260508
Application Date
20250429

Claims (7)

  1. 1. The tube expansion device for sealing the heat exchange tube and the tube plate comprises a gun-shaped shell (1), wherein a mounting rod (2) is arranged at the transverse end of the shell (1), and a hydraulic expansion head (3) is screwed at the end part of the mounting rod (2), and the tube expansion device is characterized by further comprising an operation platform (4), wherein the operation platform (4) comprises a platen (41) and a sliding plate (42), and the platen (41) is connected with the sliding plate (42) through a hydraulic rod (43); The top of the bedplate (41) is provided with a dovetail groove (411), a bearing block (44) is adaptively arranged in the dovetail groove (411), the top of the bearing block (44) is provided with a jack (440), and the vertical end of the shell (1) is inserted into the jack (440); The four corners of the bottom of the sliding plate (42) are respectively provided with a universal wheel (421).
  2. 2. The heat exchange tube and tube sheet sealing expander device according to claim 1, wherein a fixed portion of the hydraulic rod (43) is connected to a bottom portion of the platen (41), and a movable portion of the hydraulic rod (43) is connected to a top portion of the slide plate (42).
  3. 3. The expansion tube device for sealing a heat exchange tube and a tube sheet according to claim 1, wherein the dovetail groove (411) extends along the length direction of the platen (41) and penetrates through the platen (41), two ends of the dovetail groove (411) are provided with a limiting block (45), and the limiting block (45) is fixed by a bolt (450).
  4. 4. The heat exchange tube and tube sheet sealing expander device according to claim 2, wherein an upper casing (412) is provided at the bottom of the platen (41), a lower casing (422) is provided at the top of the slide plate (42), an outer wall of the lower casing (422) is attached to an inner wall of the upper casing (412), and the hydraulic rod (43) is located inside the upper casing (412) and the lower casing (422).
  5. 5. The expansion tube device for sealing the heat exchange tube and the tube plate according to claim 1, wherein a sleeve (5) is hinged at the transverse end of the shell (1), a marker pen (51) is inserted in the sleeve (5), and when the hydraulic expansion head (3) is inserted into the heat exchange tube, the nose tip of the marker pen (51) is close to or attached to the tube plate; A spring (52) is arranged between the sleeve (5) and the mounting rod (2), and the spring (52) is used for supporting the sleeve (5).
  6. 6. The expansion tube device for sealing a heat exchange tube and a tube sheet according to claim 5, wherein the sleeve (5) is prismatic, one end of the spring (52) is connected to the bottom of the sleeve (5), and the other end of the spring (52) is connected to the top of the mounting rod (2); The top of installation pole (2) is equipped with pressure sensor (20), the bottom of sleeve pipe (5) is equipped with briquetting (53), works as when sleeve pipe (5) rotate downwards, briquetting (53) lid is pressed the top of pressure sensor (20), the data transmission to the controller that pressure sensor (20) gathered is through the signal line, the controller is used for controlling the expansion state of hydraulic pressure head (3).
  7. 7. The heat exchange tube and tube sheet sealing expander device according to claim 6, wherein the pressure sensor (20) and the pressure block (53) are both located inside the spring (52).

Description

Tube expanding device for sealing heat exchange tube and tube plate Technical Field The application relates to the field of heat exchanger production equipment, in particular to a tube expansion device for sealing a heat exchange tube and a tube plate. Background At present, the heat exchange tube is connected with the tube plate by three methods, namely expansion joint, welding and expansion welding, and also by a bonding expansion connection method and a thread connection method. The expansion joint method has the characteristics of simple structure, easy pipe repair and convenient replacement, and is widely used. In the prior art, when the heat exchange tubes are expanded and connected with the tube plates, a hydraulic tube expander is generally adopted for expansion and connection, specifically, an operator can manually insert a hydraulic expansion head into the heat exchange tubes, and after expansion and connection are finished, the hydraulic expansion head is pulled out and then inserted into the next heat exchange tube until expansion and connection of all the heat exchange tubes are completed. Because the heat exchange tubes with a large number are uniformly distributed on the tube plate, the long-time repeated operation has high physical requirements on operators, and each time, the hydraulic expansion heads and the heat exchange tubes are accurately aligned, so that the overall operation efficiency is low. Disclosure of utility model The application provides a tube expansion device for sealing a heat exchange tube and a tube plate, which aims to solve the problems that the whole efficiency of the existing tube expansion operation mode is low and the physical strength of operators is high. The application adopts the following technical scheme that the tube expansion device for sealing the heat exchange tube and the tube plate comprises a gun-shaped shell, wherein the transverse end of the shell is provided with a mounting rod, the end part of the mounting rod is screwed with a hydraulic expansion head, and the tube expansion device also comprises an operation platform, wherein the operation platform comprises a platen and a sliding plate, and the platen is connected with the sliding plate through a hydraulic rod; The top of the bedplate is provided with a dovetail groove, a bearing block is adaptively arranged in the dovetail groove, the top of the bearing block is provided with a jack, and the vertical end of the shell is inserted into the jack; the bottom four corners of the sliding plate are provided with universal wheels. Optionally, the fixed part of the hydraulic rod is connected with the bottom of the bedplate, and the movable part of the hydraulic rod is connected with the top of the sliding plate. Optionally, the dovetail groove extends along the length direction of the platen and penetrates through the platen, two ends of the dovetail groove are respectively provided with a limiting block, and the limiting blocks are fixed through bolts. Optionally, an upper cover shell is arranged at the bottom of the bedplate, a lower cover shell is arranged at the top of the sliding plate, the outer wall of the lower cover shell is attached to the inner wall of the upper cover shell, and the hydraulic rod is positioned at the inner sides of the upper cover shell and the lower cover shell. Optionally, a sleeve is hinged at the transverse end of the shell, a marker pen is inserted in the sleeve, and when the hydraulic expansion head is inserted into the heat exchange tube, the nose tip of the marker pen is close to or attached to the tube plate; a spring is arranged between the sleeve and the mounting rod and is used for supporting the sleeve. Optionally, the sleeve is prismatic, one end of the spring is connected with the bottom of the sleeve, and the other end of the spring is connected with the top of the mounting rod; The top of installation pole is equipped with pressure sensor, sheathed tube bottom is equipped with the briquetting, works as when the sleeve pipe rotates downwards, the briquetting lid is pressed pressure sensor's top, pressure sensor's data transmission to the controller through the signal line that gathers, the controller is used for control the expansion state of hydraulic pressure expansion head. Optionally, the pressure sensor and the pressure block are both located inside the spring. Compared with the prior art, the hydraulic expansion head supporting device has the advantages that the operation platform is used for supporting the shell and the hydraulic expansion head and adjusting the position, so that the physical consumption of operators is reduced, and after a plurality of heat exchange pipes in the same row are expanded, only the horizontal position of the hydraulic expansion head is required to be adjusted, the butting difficulty is reduced, and the expansion efficiency is effectively improved. Drawings FIG. 1 is a schematic perspective view of the present application; F