Transport device for heat exchanger head mounting

Abstract

This invention provides a transport device for installing heat exchanger heads, including a movable frame with rollers at the bottom and a hydraulic rod at the top. A fixing ring is located above the hydraulic rod, and a connecting ring is rotatably connected to the top of the fixing ring. The top surface of the connecting ring is inclined towards the axis inside the connecting ring, and a No. 1 electromagnet is embedded in the top surface of the connecting ring. A motor for driving the connecting ring to rotate is located inside the fixing ring. This invention can effectively support the head after it has been separated from the heat exchanger tube body and remove it from below the heat exchanger tube body, facilitating maintenance of the inside of the heat exchanger tube body. During subsequent installation, the misalignment of the screw holes on the head and the screw holes on the heat exchanger tube body can be avoided by adjusting the position of the head.

Description

Technical Field

[0001] This utility model relates to the field of transportation device technology, and in particular to a transportation device for installing heat exchanger heads. Background Technology

[0002] A heat exchanger is an energy-saving device that facilitates heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters to meet process requirements. It is also a key component for improving energy efficiency. After prolonged use, heat exchangers may experience various internal malfunctions due to different conditions, leading to reduced heat exchange efficiency. Therefore, it is necessary to disassemble the heat exchanger's end caps for internal inspection and maintenance. When heat exchangers are installed vertically, the end caps are usually secured using hoisting equipment before being separated from the heat exchanger tubes and placed on the ground. However, the close proximity of the end caps to the heat exchanger tubes on the ground limits the operating space, making it difficult for personnel to inspect and maintain the internal components. Furthermore, when the end caps are subsequently hoisted and installed with the heat exchanger tubes, inaccurate alignment of the bolt holes can easily occur, resulting in a loose connection between the end caps and the tubes, potentially causing serious accidents such as media leakage within the heat exchanger. Utility Model Content

[0003] This utility model discloses a transport device for installing heat exchanger heads, which solves the problem that after the head is separated from the heat exchanger tube body, the head is located on the ground, which makes it inconvenient for staff to inspect and maintain the inside of the heat exchanger tube body, and the subsequent installation is also prone to inaccurate screw hole alignment.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A transport device for installing heat exchanger heads includes a movable frame, rollers below the movable frame, a hydraulic rod above the movable frame, a fixed ring above the hydraulic rod, a connecting ring rotatably connected to the top of the fixed ring, the top surface of the connecting ring being inclined toward the axis inside the connecting ring, and a No. 1 electromagnet embedded in the top surface of the connecting ring; a motor for driving the connecting ring to rotate is provided inside the fixed ring.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] After moving the movable frame to the bottom of the heat exchanger, the hydraulic rod is activated to move the fixing ring and connecting ring upwards, so that the top surface of the connecting ring contacts the bottom of the end cap, supporting the end cap. Then, the first electromagnet is energized to attract the end cap, increasing the stability of the end cap on the top surface of the connecting ring. Afterwards, the workers separate the end cap from the heat exchanger tubes, and the hydraulic rod moves the connecting ring downwards through the fixing ring, causing the end cap to move downwards as well. The movable frame is then used to move the end cap away from the bottom of the heat exchanger, facilitating internal inspection and maintenance. Once the heat exchanger maintenance is complete, the end cap can be moved back to directly beneath the heat exchanger using the movable frame, and then the hydraulic... The pressure rod drives the fixing ring to move upward, aligning the end cap with the heat exchanger tube body. The end cap and heat exchanger tube body can then be connected and fixed with bolts. When connecting the end cap to the heat exchanger tube body, the motor can be started to drive the connecting ring to rotate slightly, adjusting the position of the end cap to ensure precise alignment of the screw holes on the end cap with those on the heat exchanger tube body. This invention effectively supports the end cap after it has been separated from the heat exchanger tube body and removes it from below the heat exchanger tube body, facilitating maintenance of the heat exchanger tube body. During subsequent installation, adjusting the position of the end cap also prevents misalignment between the screw holes on the end cap and those on the heat exchanger tube body. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model from the front cross-section.

[0009] In the diagram: 1. Movable frame; 2. Roller; 3. Hydraulic rod; 4. Fixing ring; 41. Motor; 5. Connecting ring; 51. Electromagnet No. 1; 52. Electromagnet No. 2; 53. Battery; 54. Horizontal plate; 55. Slider; 6. Fixing plate; 61. Spring; 62. Connecting plate; 63. Limiting rod; 7. Support rod; 71. Base plate; 8. Fixing frame; 9. Reinforcing rod. Detailed Implementation

[0010] The specific content of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0011] like Figure 1As shown, this utility model provides a transport device for installing heat exchanger heads, including a movable frame 1, with rollers 2 below the movable frame 1, a hydraulic rod 3 above the movable frame 1, a fixing ring 4 above the hydraulic rod 3, a connecting ring 5 rotatably connected to the top of the fixing ring 4, the top surface of the connecting ring 5 being inclined toward the axis inside the connecting ring 5, and an electromagnet 51 embedded in the top surface of the connecting ring 5; a motor 41 for driving the connecting ring 5 to rotate is provided inside the fixing ring 4. After moving the movable frame 1 to the bottom of the heat exchanger, activate the hydraulic rod 3 to move the fixed ring 4 and connecting ring 5 upwards, so that the top surface of the connecting ring 5 contacts the bottom of the end cap, supporting the end cap. The top surface of the connecting ring 5 is tilted to effectively fit against the bottom of the end cap, thus better supporting the end cap. At least two electromagnets 51 are used to energize the first electromagnet 51 to attract the end cap, increasing the stability of the end cap on the top surface of the connecting ring 5. After the end cap is separated from the heat exchanger tube body, the hydraulic rod 3 moves the connecting ring 5 downwards through the fixed ring 4, causing the end cap to move downwards as well. Then, the movable frame 1 moves the end cap away from the bottom of the heat exchanger tube body, making it easier for the staff to begin working on the inside of the heat exchanger tube body. Inspection and maintenance: After the heat exchanger tube body is inspected and repaired, the end cap can be moved to the underside of the heat exchanger tube body using the moving frame 1. Then, the hydraulic rod 3 drives the fixing ring 4 to move upward. When the end cap is connected and fixed to the heat exchanger tube body, the motor 41 can be started to drive the connecting ring 5 to rotate slightly to adjust the position of the end cap so that the screw holes on the end cap are precisely aligned with the screw holes on the heat exchanger tube body. The end cap and the heat exchanger tube body can then be connected and fixed using bolts. When the end cap is separated from the heat exchanger tube body, the lifting rope on the external hoisting equipment can be connected to the lifting lug on the end cap to increase the safety when separating the end cap from the heat exchanger tube body. After the end cap is separated from the heat exchanger tube body, the lifting rope can be removed from the lifting lug on the end cap.

[0012] like Figure 1 As shown, a fixing plate 6 is fixed to the telescopic end of the hydraulic rod 3, a spring 61 is fixed to the top of the fixing plate 6, a connecting plate 62 is fixed to the top of the spring 61, and a fixing ring 4 is fixed to the top of the connecting plate 62. When the connecting ring 5 moves upward and contacts the bottom of the end cap, as the telescopic end of the hydraulic rod 3 continues to extend, the connecting plate 62, in conjunction with the fixing plate 6, can compress the spring 61, thus providing a buffer and preventing the top surface of the connecting ring 5 from directly contacting the end cap.

[0013] like Figure 1As shown, the main body of the motor 41 is fixed on the connecting plate 62. A horizontal plate 54, which is fixed to the rotating shaft of the motor 41, is fixed to the inner side of the connecting ring 5. A second electromagnet 52 is fixed to the top of the horizontal plate 54 by a short rod. A storage battery 53 is also fixed on the horizontal plate 54. A ring-shaped slider 55 is fixed to the bottom of the connecting ring 5. An annular groove matching the slider is opened on the top of the fixing ring 4. After the motor 41 is started, the connecting ring 5 can be driven to rotate through the horizontal plate 54. When the end cap is supported by the connecting ring 5, the bottom of the end cap enters the inner side of the connecting ring 5 and contacts the top of the second electromagnet 52. When the second electromagnet 52 is energized and generates magnetic force, it can attract the end cap, further increasing the stability of the end cap on the connecting ring 5. The storage battery 53 can supply power to the motor 41, the first electromagnet 51, and the second electromagnet 52. When the connecting ring 5 rotates, the slider 55 slides in the groove on the top of the fixing ring 4.

[0014] like Figure 1 As shown, a limiting rod 63 is fixed to the bottom of the connecting plate 62, penetrating the fixing plate 6 and slidably connected to the fixing plate 6. The limiting rod 63 ensures that the connecting plate 62 can only move vertically up and down, preventing the connecting plate 62 from swaying slightly forward, backward, left, and right.

[0015] like Figure 1 As shown, two symmetrically arranged fixed frames 8 are fixed to the inner side of the movable frame 1. Rollers 2 are fixed to the bottom of the lower fixed frame 8, and the fixed end of the hydraulic rod 3 is fixed to the top of the upper fixed frame 8. A reinforcing rod 9 is fixed between the two fixed frames 8. There are at least two hydraulic rods 3, each fixed to the top of the upper fixed frame 8. The reinforcing rod 9 increases the stability of the connection between the two fixed frames 8.

[0016] like Figure 1 As shown, a support rod 7 is fixed to the bottom of the fixed plate 6. The bottom end of the support rod 7 passes through the inside of the movable frame 1 and is fixed to the base plate 71. A rubber pad is fixed to the bottom of the base plate 71. When the end cap is moved away from below the heat exchanger tube, the telescopic end of the hydraulic rod 3 can move downward (retract into the fixed end of the hydraulic rod 3), causing the support rod 7 to move downward as well. After the rubber pad at the bottom of the base plate 71 contacts the ground, the pressure on the hydraulic rod 3 can be reduced, and at the same time, the movable frame 1 can be restricted to prevent it from moving arbitrarily.

[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A transport device for installing heat exchanger heads, comprising a movable frame with rollers below the frame, characterized in that: A hydraulic rod is located above the movable frame, and a fixed ring is located above the hydraulic rod. A connecting ring is rotatably connected to the top of the fixed ring. The top surface of the connecting ring is inclined toward the axis inside the connecting ring, and an electromagnet is embedded in the top surface of the connecting ring. A motor for driving the connecting ring to rotate is located inside the fixed ring.

2. The transport device for installing heat exchanger heads according to claim 1, characterized in that: The telescopic end of the hydraulic rod is fixed with a fixing plate, the top of the fixing plate is fixed with a spring, the top of the spring is fixed with a connecting plate, and a fixing ring is fixed to the top of the connecting plate.

3. The transport device for installing heat exchanger heads according to claim 2, characterized in that: The main body of the motor is fixed on the connecting plate. A horizontal plate that is fixed to the motor shaft is fixed on the inner side of the connecting ring. A No. 2 electromagnet is fixed on the top of the horizontal plate by a short rod. A storage battery is also fixed on the horizontal plate. A ring-shaped slider is fixed at the bottom of the connecting ring. An annular groove that matches the slider is opened on the top of the fixing ring.

4. A transport device for installing heat exchanger heads according to claim 2, characterized in that: A limiting rod is fixed to the bottom of the connecting plate, penetrating the fixing plate and slidably connected to it.

5. A transport device for installing heat exchanger heads according to claim 1, characterized in that: The inner side of the movable frame is fixed with two symmetrical fixed frames. The roller is fixed to the bottom of the lower fixed frame, and the fixed end of the hydraulic rod is fixed to the top of the upper fixed frame. A reinforcing rod is fixed between the two fixed frames.

6. A transport device for installing heat exchanger heads according to claim 2, characterized in that: A support rod is fixed to the bottom of the fixed plate. The bottom end of the support rod passes through the inside of the movable frame and is fixed to the base plate. A rubber pad is fixed to the bottom of the base plate.

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