Tube bundle installation auxiliary device

Abstract

The utility model discloses an auxiliary device for installing a tube bundle. The device comprises a hydraulic device, a trolley guide rail arranged in the movement direction of a piston of the hydraulic device, a supporting trolley arranged on the trolley guide rail and used for supporting a tube bundle and adjusting the height of the tube bundle, a heat exchanger support used for placing and fixing a heat exchanger shell, a tube bundle guide rail used for being installed below the tube bundle, and a lifting device matched with the tube bundle guide rail and used for lifting the tube bundle. And the guide block is arranged at the inlet of the heat exchanger shell. Compared with traditional manual operation, hydraulic pressure is selected as power, the structure is simple, operation is convenient, and time and labor are saved; the base plate is arranged at the front end of the piston rod, so that the contact area of the piston rod and the tube plate can be increased, the piston rod is prevented from mistakenly poking into a connecting hole formed in the tube plate to change the force application direction, and meanwhile, the tube bundle damage caused by overlarge single-point pressure intensity is avoided; and an extension rod can be additionally arranged at the front end of the piston rod, so that the device can meet the working requirements of various tube bundles with different lengths.

Description

Technical Field

[0001] The utility model relates to a shell and tube heat exchanger, in particular to a tube bundle installation auxiliary device. Background Art

[0002] During the manufacturing process of shell-and-tube heat exchangers, ensuring that the tube bundle is smoothly inserted into the heat exchanger shell without scratching it is a crucial step. For tube bundles with a regular shell shape, small diameter, and short length, installation typically involves erecting the shell, hoisting the tube bundle to the shell opening using a crane, and then inserting the bundle into the shell using its own weight. However, this method cannot be used for tube bundles with irregular shell shapes, large diameters, and long lengths.

[0003] When this happens, the usual approach is to weld two pull points on either side of the shell for hanging hand hoists, and two more on the side of the tube sheet. The tube bundle is then hoisted to the shell opening using a crane, and the pull of a horizontal hand hoist is used to force the tube bundle into the shell. However, this method is complex, time-consuming, and labor-intensive. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a pipe bundle installation auxiliary device which is simple to operate and saves time and effort.

[0005] In order to solve the above technical problems, the tube bundle installation auxiliary device of the present invention includes a hydraulic device, a trolley guide rail arranged along the movement direction of the hydraulic device piston, and a supporting trolley arranged on the trolley guide rail for supporting the tube bundle and adjusting its height.

[0006] The hydraulic device includes a base, a hydraulic cylinder installed on the base, and a piston rod installed in the hydraulic cylinder.

[0007] The tube bundle installation auxiliary device also includes a heat exchanger support for placing and fixing the heat exchanger shell.

[0008] The tube bundle installation auxiliary device further comprises a tube bundle guide rail for installation below the tube bundle, and a guide block matching the tube bundle guide rail and for installation at the inlet of the heat exchanger shell.

[0009] A backing plate is provided at the front end of the piston rod.

[0010] An extension rod for adapting to a longer tube bundle is provided at the front end of the pad.

[0011] The pads are provided at both ends of the extension rod.

[0012] The backing plate is made of bakelite.

[0013] The advantages of the utility model are: compared with traditional manual operation, hydraulic power is selected as the power, which has a simple structure, convenient operation, and saves time and effort; a pad is provided at the front end of the piston rod, which can increase the contact area between the piston rod and the tube sheet, prevent the piston rod from accidentally poking into the connection hole on the tube sheet, causing the force direction to change, and at the same time avoid damage to the tube bundle caused by excessive pressure at a single point; an extension rod can be additionally installed at the front end of the piston rod, so that the device can meet the working requirements of tube bundles of various lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the position relationship of the utility model;

[0015] Figure 2 This is a schematic diagram of the working state of the utility model;

[0016] Figure 3 This is a schematic diagram of the utility model after the extension rod is installed. DETAILED DESCRIPTION

[0017] The tube bundle installation auxiliary device of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 、 2 As shown, the tube bundle installation auxiliary device of the present invention includes a hydraulic device 1, a trolley guide rail 2 arranged along the direction of piston movement of the hydraulic device 1, and a supporting trolley 3 mounted on the trolley guide rail 2 for supporting the tube bundle and adjusting its height. The tube bundle installation auxiliary device also includes a heat exchanger support 7 for placing and fixing the heat exchanger shell 12, a tube bundle guide rail 8 for installation below the tube bundle 13, and a guide block 9 for installation at the inlet of the heat exchanger shell 12, which matches the tube bundle guide rail 8. The hydraulic device 1 includes a base 4, a hydraulic cylinder 5 mounted on the base 4, and a piston rod 6 installed in the hydraulic cylinder 5.

[0019] Before work, install the tube sheet 14 at the front end of the target tube bundle 13 and the tube bundle guide rail 8 below the tail end; install the guide block 9 at the inlet of the heat exchanger shell 12. During operation, first fix the heat exchanger shell 12 on the heat exchanger support 7, use the crane to lift the tube bundle 13 to the entrance of the heat exchanger shell 12 and align the tube bundle guide rail 8 and the guide block 9 at the tail end; then place the other end of the tube bundle 13 on the supporting trolley 3 and fix the tube sheet 14 to it, and adjust the height of the tube bundle 13 to be level with the entrance of the heat exchanger shell 12; then place the hydraulic device 1 in front of the tube sheet 14, so that the piston rod 6 is perpendicular to the tube sheet 14 and the front end contacts it, and a pad 10 is provided at the contact position. The pad 10 is made of bakelite and is used to increase the contact area between the piston rod 6 and the tube sheet 14, prevent the piston rod 6 from accidentally poking into the connection hole opened on the tube sheet 14, causing the force direction to change, and at the same time avoid damage to the tube bundle 13 due to excessive single-point pressure; finally, operate the hydraulic cylinder 5 to extend the piston rod 6, and use horizontal thrust to push the tube bundle 13 into the interior of the heat exchanger shell 12.

[0020] like Figure 3 As shown, due to the different lengths of the tube bundles, when encountering a longer tube bundle, an extension rod 11 can be further provided at the front end of the pad 10 on the piston rod 6, and pads 10 are also provided at both ends of the extension rod 11.

[0021] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A tube bundle installation auxiliary device, characterized in that: The invention comprises a hydraulic device (1), a trolley guide rail (2) arranged along the piston movement direction of the hydraulic device (1), and a supporting trolley (3) arranged on the trolley guide rail (2) for supporting a tube bundle and adjusting its height; the hydraulic device (1) comprises a base (4), a hydraulic cylinder (5) installed on the base (4), and a piston rod (6) installed in the hydraulic cylinder (5); a pad (10) is provided at the front end of the piston rod (6); and an extension rod (11) is provided at the front end of the pad (10) for adapting to a tube bundle with a longer length.

2. The tube bundle installation auxiliary device according to claim 1, characterized in that: The tube bundle installation auxiliary device also includes a heat exchanger support (7) for placing and fixing the heat exchanger shell.

3. The tube bundle installation auxiliary device according to claim 1, characterized in that: The tube bundle installation auxiliary device further comprises a tube bundle guide rail (8) for installation below the tube bundle, and a guide block (9) matched with the tube bundle guide rail (8) for installation at the inlet of the heat exchanger shell.

4. The tube bundle installation auxiliary device according to claim 1, 2 or 3, characterized in that: The pads (10) are provided at both ends of the extension rod (11).

5. The tube bundle installation auxiliary device according to claim 1, characterized in that: The backing plate (10) is made of bakelite.

Images