Dismounting device for threaded ring of heat exchanger

Abstract

The utility model discloses a heat exchanger threaded ring dismounting device which comprises a base, the bottom of the base is connected with a plurality of locking universal wheels, the top of the base is fixedly connected with a vertically-arranged electric telescopic frame, the top of the electric telescopic frame is fixedly connected with a horizontally-arranged transverse plate, the transverse plate is connected with a mounting cylinder, and the mounting cylinder is connected with a screw rod. The mounting barrel is connected with a fixing block through a replacement mechanism, the top of the transverse plate is fixedly connected with an air cylinder, the output end of the air cylinder is fixedly connected with an output shaft, the end of the output shaft is fixedly connected with a movable plate, and the movable plate is connected with the mounting barrel through a meshing mechanism. Through cooperative use of the air cylinder, the output shaft, the movable plate, the rotating shaft, the hanging ring, the mounting cylinder, the fixing block, the rack and the gear, quick dismounting and mounting of the heat exchanger threaded ring are achieved, and the problem that in the prior art, a wrench needs to be manually pulled to dismount the heat exchanger threaded ring, and consequently efficiency is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger thread ring disassembly device. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial productions. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are widely used.

[0003] As one of the important equipments of high-pressure hydrogenation unit in petrochemical industry, threaded ring heat exchanger has a complex structure, high installation precision requirements and harsh process conditions. It is mostly used in high temperature and high pressure heat exchange occasions containing hydrogen or hydrogen sulfide. Since threaded ring heat exchanger has many assembly steps and is difficult to repair, especially the disassembly of threaded locking ring, the existing threaded ring disassembly of high-pressure threaded locking ring heat exchanger is usually done by staff carrying special tools to manually loosen and disassemble the threaded ring. The process is very cumbersome, inefficient, and has high work intensity. It does not have a convenient and fast disassembly function. Therefore, a heat exchanger threaded ring disassembly device is proposed to solve the problem. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and proposes a heat exchanger threaded ring disassembly device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A heat exchanger threaded ring disassembly device comprises a base, a plurality of locking universal wheels are connected to the bottom of the base, a vertically arranged electric telescopic frame is fixedly connected to the top of the base, a horizontally arranged cross plate is fixedly connected to the top of the electric telescopic frame, the cross plate is connected to a mounting tube, the mounting tube is connected to a fixed block through a replacement mechanism, a cylinder is fixedly connected to the top of the cross plate, an output shaft is fixedly connected to the output end of the cylinder, a movable plate is fixedly connected to the end of the output shaft, and the movable plate is connected to the mounting tube through an engagement mechanism.

[0007] Preferably, the outer wall of the mounting tube is fixedly connected with a rotating shaft, the bottom of the horizontal plate is fixedly connected with a hanging plate, the bottom of the hanging plate is fixedly connected with a hanging ring, a bearing sleeve is provided in the hanging ring, and the end of the rotating shaft away from the mounting tube is rotatably connected to the bearing sleeve.

[0008] Preferably, the replacement mechanism includes six mounting openings on the mounting tube, the side wall of the fixing block is provided with a mounting groove corresponding to the mounting tube, a telescopic rod is fixedly connected to the bottom of the mounting groove, a limiting block is fixedly connected to the top of the telescopic rod, and the limiting block is located in the mounting opening.

[0009] Preferably, an elastic spring is sleeved on the outer side wall of the telescopic rod, and two ends of the elastic spring are respectively fixedly connected to the bottom of the installation groove and the outer side wall of the limit block.

[0010] Preferably, the meshing mechanism comprises a rack fixedly connected to the outer side wall of the movable plate, a gear is fixedly sleeved on the outer side wall of the mounting cylinder, and the rack meshes with the gear.

[0011] Preferably, the fixing block is arranged in a circular shape, and a threaded ring sleeve is provided on a side wall of the fixing block.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model realizes the rapid disassembly and installation of the heat exchanger threaded ring through the coordinated use of the cylinder, the output shaft, the movable plate, the rotating shaft, the lifting ring, the mounting tube, the fixing block, the rack and the gear, thereby avoiding the need for manual operation of the wrench to disassemble the heat exchanger threaded ring in the prior art, thus saving labor.

[0014] 2. The utility model can replace fixed blocks of different specifications through the cooperation of the mounting port, mounting groove, telescopic rod, limit block and elastic spring, and then obtain threaded ring sleeves of different specifications, so as to facilitate the disassembly of threaded rings of heat exchangers of different specifications, thereby improving the application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a heat exchanger thread ring disassembly device proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the fixing block and the replacement mechanism in a heat exchanger threaded ring disassembly device proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between a fixing block and a threaded ring sleeve in a heat exchanger threaded ring disassembly device proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the installation cylinder and the installation port in a heat exchanger threaded ring removal device proposed by the utility model;

[0019] Figure 5 The utility model is a schematic diagram of the connection structure of a telescopic rod, a limit block and an elastic spring in a heat exchanger threaded ring disassembly device proposed by the utility model.

[0020] In the figure: 1. base; 2. locking universal wheel; 3. electric telescopic frame; 4. cross plate; 5. mounting tube; 6. fixing block; 7. cylinder; 8. movable plate; 9. rotating shaft; 10. hanging plate; 11. lifting ring; 12. mounting opening; 13. mounting groove; 14. telescopic rod; 15. limit block; 16. elastic spring; 17. rack; 18. gear; 19. threaded ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Reference Figure 1-Figure 5 A heat exchanger threaded ring disassembly device comprises a base 1, a plurality of locking universal wheels 2 are connected to the bottom of the base 1, a vertically arranged electric telescopic frame 3 is fixedly connected to the top of the base 1, a horizontally arranged cross plate 4 is fixedly connected to the top of the electric telescopic frame 3, the cross plate 4 is connected to a mounting tube 5, a rotating shaft 9 is fixedly connected to the outer wall of the mounting tube 5, a hanging plate 10 is fixedly connected to the bottom of the cross plate 4, a hanging ring 11 is fixedly connected to the bottom of the hanging plate 10, a bearing sleeve is arranged in the hanging ring 11, and an end of the rotating shaft 9 away from the mounting tube 5 is rotatably sleeved with the bearing sleeve. By providing the bearing sleeve, the rotating shaft 9 can well drive the mounting tube 5 to rotate.

[0024] The mounting tube 5 is connected to a fixing block 6 through a replacement mechanism. The fixing block 6 is circular in shape, and a threaded ring sleeve 19 is provided on the side wall of the fixing block 6. Different fixing blocks 6 are provided with threaded ring sleeves 19 of different specifications and models, so that threaded rings of different specifications and models can be disassembled by replacing different fixing blocks 6.

[0025] The replacement mechanism includes six mounting openings 12 opened on the mounting tube 5, and a mounting groove 13 corresponding to the mounting tube 5 is opened on the side wall of the fixing block 6. A telescopic rod 14 is fixedly connected to the bottom of the mounting groove 13, and a limiting block 15 is fixedly connected to the top of the telescopic rod 14. The limiting block 15 is located in the mounting opening 12, and an elastic spring 16 is sleeved on the outer wall of the telescopic rod 14. The two ends of the elastic spring 16 are respectively fixedly connected to the bottom of the mounting groove 13 and the outer wall of the limiting block 15. By providing the elastic spring 16, the limiting block 15 can be stably located in the mounting opening 12 without the action of external force, thereby ensuring the stability between the mounting tube 5 and the fixing block 6.

[0026] A cylinder 7 is fixedly connected to the top of the horizontal plate 4, an output shaft is fixedly connected to the output end of the cylinder 7, a movable plate 8 is fixedly connected to the end of the output shaft, the movable plate 8 is connected to the mounting tube 5 through a meshing mechanism, the meshing mechanism includes a rack 17 fixedly connected to the outer wall of the movable plate 8, a gear 18 is fixedly sleeved on the outer wall of the mounting tube 5, the rack 17 is meshed with the gear 18, and the rack 17 is meshed with the gear 18. When the rack 17 moves up and down, it can drive the gear 18 to rotate.

[0027] The specific working principle of the utility model is as follows:

[0028] In the initial state, the device is moved to the work site by locking the universal wheel 2, wherein the working method of the locking universal wheel 2 is the existing technology and will not be described in detail here. After arriving at the work site, the electric telescopic frame 3 is started, and the electric telescopic frame 3 will be raised and lowered to the required working height, and the threaded ring sleeve 19 on the fixed block 6 is aligned with the outer wall of the threaded ring to be removed, and the threaded ring sleeve 19 on the fixed block 6 is engaged with the threaded ring, thereby achieving the fixation of the threaded ring to be removed, wherein the threaded ring sleeve 19 is provided with annular serrations to increase the friction during rotation.

[0029] After the fixation is completed, the cylinder 7 is started. The operation of the cylinder 7 will drive the output shaft to extend and retract, and then drive the movable plate 8 to move in the vertical direction. When the movable plate 8 moves in the vertical direction, it will drive the rack 17 on the movable plate 8 to move. Since the rack 17 and the gear 18 are meshed and connected, when the rack 17 moves up and down, it will drive the gear 18 to rotate, and then drive the installation tube 5 to rotate. When the installation tube 5 rotates, it will drive the fixed block 6 inside the installation tube 5 to rotate, and then the threaded ring sleeve 19 on the fixed block 6 rotates, thereby realizing the rotation of the threaded ring engaged in the threaded ring sleeve 19, and realizing the automatic disassembly of the threaded ring of the heat exchanger. There is no need to manually turn the threaded ring by hand, which saves labor. It is worth noting that the threaded ring can be fixed by reversing the installation tube 5. The device can also install and fix the threaded ring, which improves the practicability of the device.

[0030] Since the specifications of heat exchangers are different, the threaded rings on the heat exchangers are also different. Therefore, when it is necessary to disassemble the threaded rings of different specifications, it is only necessary to press the limit block 15 to separate the limit block 15 from the installation port 12, so as to realize the separation of the installation tube 5 and the fixed block 6. By separating the installation tube 5 from the fixed block 6, the fixed blocks 6 of different specifications can be replaced, and then the threaded ring sleeves 19 of different specifications can be replaced, so as to facilitate the disassembly of the threaded rings of heat exchangers of different specifications, thereby improving the application scope of the device.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat exchanger thread ring disassembly device, comprising a base (1), characterized in that: The bottom of the base (1) is connected to a plurality of locking universal wheels (2); the top of the base (1) is fixedly connected to a vertically arranged electric telescopic frame (3); the top of the electric telescopic frame (3) is fixedly connected to a horizontally arranged transverse plate (4); the transverse plate (4) is connected to a mounting tube (5); the mounting tube (5) is connected to a fixing block (6) via a replacement mechanism; the top of the transverse plate (4) is fixedly connected to a cylinder (7); the output end of the cylinder (7) is fixedly connected to an output shaft; the end of the output shaft is fixedly connected to a movable plate (8); the movable plate (8) is connected to the mounting tube (5) via a meshing mechanism.

2. A heat exchanger thread ring disassembly device according to claim 1, characterized in that: The outer wall of the mounting tube (5) is fixedly connected to a rotating shaft (9), the bottom of the horizontal plate (4) is fixedly connected to a hanging plate (10), the bottom of the hanging plate (10) is fixedly connected to a hanging ring (11), a bearing sleeve is arranged in the hanging ring (11), and one end of the rotating shaft (9) away from the mounting tube (5) is rotatably sleeved with the bearing sleeve.

3. A heat exchanger thread ring disassembly device according to claim 1, characterized in that: The replacement mechanism comprises six mounting openings (12) formed on the mounting tube (5); a mounting groove (13) corresponding to the mounting tube (5) is formed on a side wall of the fixing block (6); a telescopic rod (14) is fixedly connected to the bottom of the mounting groove (13); a limit block (15) is fixedly connected to the top of the telescopic rod (14); and the limit block (15) is located in the mounting opening (12).

4. A heat exchanger thread ring disassembly device according to claim 3, characterized in that: An elastic spring (16) is sleeved on the outer side wall of the telescopic rod (14), and two ends of the elastic spring (16) are respectively fixedly connected to the inner bottom of the installation groove (13) and the outer side wall of the limit block (15).

5. A heat exchanger thread ring disassembly device according to claim 1, characterized in that: The meshing mechanism comprises a rack (17) fixedly connected to the outer wall of the movable plate (8), a gear (18) fixedly sleeved on the outer wall of the mounting cylinder (5), and the rack (17) meshes with the gear (18).

6. A heat exchanger thread ring disassembly device according to claim 1, characterized in that: The fixing block (6) is arranged in a circular shape, and a threaded ring sleeve (19) is provided on a side wall of the fixing block (6).

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