Tube expander for adapter tube of heat exchanger

Abstract

The utility model relates to the technical field of pipe expanding machines, and discloses a pipe expanding machine for an adapter pipe of a heat exchanger, which comprises a support component, an adapter pipe inserted on the support component, a backing ring sleeved at the top end of the adapter pipe, a driving component arranged on the rear side above the support component, a mounting component arranged on the driving component, and a clamping component arranged on the mounting component, a pipe expanding assembly is detachably mounted on the mounting assembly; the supporting assembly comprises a pipe expanding platform, a strip-shaped plate is fixedly installed on the rear side of the upper surface of the pipe expanding platform, a supporting disc is fixedly installed in the middle of the upper surface of the pipe expanding platform, a containing column is fixedly installed above the supporting disc, a containing hole is formed in the containing column, and the adapter pipe is inserted into the corresponding containing hole. According to the pipe expanding device, the lifting plate, the mounting assembly and the pipe expanding assembly can be driven to integrally descend by starting the control switch of the hydraulic cylinder, so that an adapter pipe can be extruded through the pipe expanding head, and the purpose of pipe expanding is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tube expanders, and more specifically to a tube expander for an adapter tube of a heat exchanger. Background Art

[0002] Hydraulic expansion machine is a special hydraulic expansion equipment used for the expansion connection of heat exchange tubes and tube sheets in the manufacturing of heat exchangers, condensers, high-pressure heaters, steam turbines, boilers and other equipment. The use of hydraulic expansion technology has the advantages of low manufacturing cost, light labor intensity, short manufacturing cycle, uniform and reliable expansion quality, etc. Hydraulic expansion technology has been widely used in the manufacture of heat exchangers in the fields of petrochemical, electric power, boilers, nuclear power, refrigeration, etc., and has improved the quality and production efficiency of domestic heat exchanger equipment.

[0003] At present, the tube expansion heads of the existing tube expansion machines for adapter tubes of heat exchangers on the market are not easy to replace, resulting in low working efficiency. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a tube expansion machine for an adapter tube of a heat exchanger, which has the advantage of being easy to replace the tube expansion head.

[0005] To achieve the above object, the utility model provides the following technical solution: a tube expander for an adapter tube of a heat exchanger, comprising a support assembly, an adapter tube is inserted into the support assembly, a gasket is sleeved on the top of the adapter tube, a driving assembly is arranged on the upper rear side of the support assembly, a mounting assembly is arranged on the driving assembly, and a tube expander assembly is detachably mounted on the mounting assembly;

[0006] The support assembly includes a pipe expansion platform, a strip plate is fixedly installed on the rear side of the upper surface of the pipe expansion platform, a support disc is fixedly installed in the middle of the upper surface of the pipe expansion platform, a placement column is fixedly installed above the support disc, a placement hole is provided on the placement column, and the adapter tube is inserted into the corresponding placement hole.

[0007] As a preferred technical solution of the utility model, four anti-slip foot pads distributed in a rectangular shape are fixedly installed on the lower surface of the pipe expansion platform.

[0008] As a preferred technical solution of the utility model, the driving assembly includes two symmetrically arranged vertical guide columns, both of which are fixedly mounted on the upper surface of the strip plate, a top plate is fixedly mounted on the top of the vertical guide columns, a lifting plate is slidably sleeved on the two vertical guide columns, a hydraulic cylinder is fixedly mounted on the top plate, the telescopic end of the hydraulic cylinder is fixedly connected to the upper surface of the lifting plate, a fixed stop column is fixedly mounted on the upper surface of the lifting plate, and two symmetrically distributed through holes are opened on the lifting plate.

[0009] As an optimal technical scheme of the present invention, the mounting assembly includes a square plate, the upper surface of the square plate is fixedly connected to the lower surface of the lifting plate, a circular frame is fixedly installed under the square plate, and a limit block is passed through both sides of the circular frame, and an end plate is fixedly installed at one end of the limit block located on the outer side of the circular frame, and the L-shaped frame plate is fixedly installed on the circular frame, and a horizontal column is passed through the L-shaped frame plate, one end of the horizontal column is fixedly installed on the end plate, and a follower plate is fixedly installed on the other end of the horizontal column, and a return spring is sleeved on the outer side of the horizontal column and located between the end plate and the L-shaped frame plate. The mounting assembly also includes two through plates adapted to the through holes, the through plates pass through the through holes, and the through plates slide in cooperation with the through holes, and the bottom end of the through plate is movably connected to the top end of the follower plate by a connecting diagonal rod.

[0010] As a preferred technical solution of the utility model, the bottom end of the connecting oblique rod and the top end of the follower plate are rotationally matched through a hinge seat, the top end of the connecting oblique rod and the bottom end of the through-plate are rotationally matched through another hinge seat, and a circular cover is fixedly installed on the top end of the two through-plates.

[0011] As a preferred technical solution of the utility model, the pipe expansion assembly includes a plug-in block adapted to the circular frame, a limiting hole adapted to the limiting block is provided inside the plug-in block, and a pipe expansion head is fixedly installed at the bottom of the plug-in block.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model can drive the lifting plate, the mounting assembly and the pipe expansion assembly to descend as a whole by starting the control switch of the hydraulic cylinder, so that the adapter pipe can be squeezed by the pipe expansion head, thereby achieving the purpose of pipe expansion;

[0014] 2. The utility model presses the circular cover downward, and the penetration plate will move downward. Since the bottom end of the penetration plate and the top end of the follower plate are movably connected by a connecting diagonal rod, the two limit blocks will move away from each other when the penetration plate moves downward. At this time, the limit blocks will be detached from the inside of the limit hole, and then the expansion tube assembly can be removed from the mounting assembly as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a tube expansion machine for an adapter tube of a heat exchanger according to the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the support assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the adapter tube and the gasket ring of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the drive assembly of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the installation assembly of the utility model;

[0020] Figure 6 It is a cross-sectional view of the installation assembly of the utility model;

[0021] Figure 7 It is a structural schematic diagram of the pipe expansion assembly of the utility model.

[0022] In the figure: 1. Support assembly; 101. Pipe expansion platform; 102. Anti-skid foot pad; 103. Strip plate; 104. Support disc; 105. Placement column; 106. Placement hole; 2. Adapter tube; 3. Gasket; 4. Drive assembly; 401. Vertical guide column; 402. Top plate; 403. Lifting plate; 404. Hydraulic cylinder; 405. Fixed stop column; 406. Through hole; 5. Installation assembly; 501. Square plate; 502. Back-shaped frame; 503. Limit block; 504. End plate; 505. L-shaped frame plate; 506. Horizontal column; 507. Follow-up plate; 508. Reset spring; 509. Through plate; 510. Connecting diagonal rod; 511. Back-shaped cover; 6. Pipe expansion assembly; 601. Plug-in block; 602. Limit hole; 603. Pipe expansion head. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 7As shown, the utility model provides a tube expander for an adapter tube of a heat exchanger, comprising a support assembly 1, an adapter tube 2 is inserted into the support assembly 1, a gasket 3 is sleeved on the top of the adapter tube 2, a driving assembly 4 is arranged on the upper rear side of the support assembly 1, a mounting assembly 5 is arranged on the driving assembly 4, and a tube expander assembly 6 is detachably mounted on the mounting assembly 5;

[0025] The support assembly 1 includes a pipe expansion platform 101, on the lower surface of which four anti-skid pads 102 arranged in a rectangular shape are fixedly installed, on the rear side of the upper surface of the pipe expansion platform 101 a strip plate 103 is fixedly installed, on the middle of the upper surface of the pipe expansion platform 101 a support disc 104 is fixedly installed, above the support disc 104 a placement column 105 is fixedly installed, on the placement column 105 a placement hole 106 is provided, and the adapter tube 2 is plugged into the corresponding placement hole 106;

[0026] The driving assembly 4 includes two symmetrically arranged vertical guide columns 401, both of which are fixedly mounted on the upper surface of the strip plate 103, a top plate 402 is fixedly mounted on the top of the vertical guide columns 401, a lifting plate 403 is slidably sleeved on the two vertical guide columns 401, a hydraulic cylinder 404 is fixedly mounted on the top plate 402, the telescopic end of the hydraulic cylinder 404 is fixedly connected to the upper surface of the lifting plate 403, a fixed stop column 405 is fixedly mounted on the upper surface of the lifting plate 403, and two symmetrically distributed through holes 406 are opened on the lifting plate 403;

[0027] The mounting assembly 5 includes a square plate 501, the upper surface of the square plate 501 is fixedly connected to the lower surface of the lifting plate 403, a circular frame 502 is fixedly installed below the square plate 501, both sides of the circular frame 502 are penetrated by a limit block 503, an end plate 504 is fixedly installed on one end of the limit block 503 located on the outer side of the circular frame 502, an L-shaped frame plate 505 is fixedly installed on the circular frame 502, a horizontal column 506 is penetrated on the L-shaped frame plate 505, one end of the horizontal column 506 is fixedly installed on the end plate 504, and a follower plate 507 is fixedly installed on the other end of the horizontal column 506, and the outer side of the horizontal column 506 A return spring 508 is sleeved between the end plate 504 and the L-shaped frame plate 505. The installation assembly 5 also includes two through plates 509 adapted to the through holes 406. The through plates 509 pass through the through holes 406, and the through plates 509 and the through holes 406 are slidably matched. The bottom end of the through plate 509 is movably connected to the top end of the follower plate 507 through a connecting inclined rod 510. The bottom end of the connecting inclined rod 510 is rotatably matched with the top end of the follower plate 507 through a hinge seat. The top end of the connecting inclined rod 510 is rotatably matched with the bottom end of the through plate 509 through another hinge seat. A circular cover 511 is fixedly installed on the top end of the two through plates 509.

[0028] The pipe expansion assembly 6 includes a plug-in block 601 matched with the circular frame 502 , a limiting hole 602 matched with the limiting block 503 is provided inside the plug-in block 601 , and a pipe expansion head 603 is fixedly installed at the bottom of the plug-in block 601 .

[0029] The working principle and use process of this utility model:

[0030] The utility model can drive the lifting plate 403, the installation assembly 5 and the tube expansion assembly 6 to descend as a whole by starting the control switch of the hydraulic cylinder 404, so that the adapter tube 2 can be squeezed by the tube expansion head 603, so as to achieve the purpose of tube expansion. In addition, when the tube expansion assembly 6 needs to be replaced, the circular cover 511 is squeezed downward, and the through plate 509 will move downward at this time. Since the bottom end of the through plate 509 is movably connected to the top end of the follower plate 507 by the connecting inclined rod 510, the two limit blocks 503 will move away from each other when the through plate 509 moves downward. At this time, the limit blocks 503 will be detached from the inside of the limit hole 602, and then the tube expansion assembly 6 can be removed from the installation assembly 5 as a whole.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tube expander for an adapter tube of a heat exchanger, comprising a support assembly (1), characterized in that: An adapter tube (2) is inserted into the support assembly (1), a gasket (3) is sleeved on the top end of the adapter tube (2), a driving assembly (4) is arranged on the upper rear side of the support assembly (1), a mounting assembly (5) is arranged on the driving assembly (4), and a pipe expansion assembly (6) is detachably mounted on the mounting assembly (5); The support assembly (1) comprises a tube expansion platform (101), a strip plate (103) is fixedly mounted on the rear side of the upper surface of the tube expansion platform (101), a support disc (104) is fixedly mounted in the middle of the upper surface of the tube expansion platform (101), a placement column (105) is fixedly mounted above the support disc (104), a placement hole (106) is provided on the placement column (105), and the adapter tube (2) is inserted into the corresponding placement hole (106).

2. The tube expansion machine for the adapter tube of the heat exchanger according to claim 1, characterized in that: Four anti-slip foot pads (102) distributed in a rectangular shape are fixedly mounted on the lower surface of the pipe expansion platform (101).

3. The tube expansion machine for the adapter tube of the heat exchanger according to claim 2, characterized in that: The driving assembly (4) comprises two symmetrically arranged vertical guide columns (401), the two vertical guide columns (401) are fixedly mounted on the upper surface of the strip plate (103), a top plate (402) is fixedly mounted on the top of the vertical guide columns (401), a lifting plate (403) is slidably sleeved on the two vertical guide columns (401), a hydraulic cylinder (404) is fixedly mounted on the top plate (402), a telescopic end of the hydraulic cylinder (404) is fixedly connected to the upper surface of the lifting plate (403), a fixed stop column (405) is fixedly mounted on the upper surface of the lifting plate (403), and two symmetrically distributed through holes (406) are opened on the lifting plate (403).

4. The tube expansion machine for the adapter tube of the heat exchanger according to claim 3, characterized in that: The mounting assembly (5) comprises a square plate (501), the upper surface of the square plate (501) is fixedly connected to the lower surface of the lifting plate (403), a circular frame (502) is fixedly mounted below the square plate (501), a limit block (503) is passed through both sides of the circular frame (502), an end plate (504) is fixedly mounted on one end of the limit block (503) located outside the circular frame (502), an L-shaped frame plate (505) is fixedly mounted on the circular frame (502), a horizontal column (506) is passed through the L-shaped frame plate (505), and one end of the horizontal column (506) is fixedly mounted on the circular frame (502). The horizontal column (506) is fixedly mounted on the end plate (504); a follower plate (507) is fixedly mounted on the other end of the horizontal column (506); a return spring (508) is sleeved on the outer side of the horizontal column (506) and located between the end plate (504) and the L-shaped frame plate (505); the mounting assembly (5) further comprises two through plates (509) adapted to the through holes (406); the through plates (509) pass through the through holes (406), and the through plates (509) and the through holes (406) are slidably matched; the bottom end of the through plates (509) is movably connected to the top end of the follower plate (507) via a connecting inclined rod (510).

5. The tube expansion machine for the adapter tube of the heat exchanger according to claim 4, characterized in that: The bottom end of the connecting oblique rod (510) is rotatably matched with the top end of the follower plate (507) via a hinge seat, and the top end of the connecting oblique rod (510) is rotatably matched with the bottom end of the through-plate (509) via another hinge seat. A circular cover (511) is fixedly mounted on the top ends of the two through-plates (509).

6. The tube expansion machine for the adapter tube of the heat exchanger according to claim 5, characterized in that: The pipe expansion assembly (6) comprises a plug-in block (601) adapted to the circular frame (502), a limiting hole (602) adapted to the limiting block (503) is provided inside the plug-in block (601), and a pipe expansion head (603) is fixedly mounted on the bottom of the plug-in block (601).

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